./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/mult-dist.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/mult-dist.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 c31f1603fd15e011308b2e8fcd1cd45b23f0b00ac0b8b466c4f212460081639c --- Real Ultimate output --- This is Ultimate 0.3.0-?-551b009-m [2025-01-09 16:40:17,004 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-01-09 16:40:17,040 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-01-09 16:40:17,043 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-01-09 16:40:17,043 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-01-09 16:40:17,057 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-01-09 16:40:17,057 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-01-09 16:40:17,057 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-01-09 16:40:17,058 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-01-09 16:40:17,058 INFO L153 SettingsManager]: * Use memory slicer=true [2025-01-09 16:40:17,058 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-01-09 16:40:17,058 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-01-09 16:40:17,058 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-01-09 16:40:17,058 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-01-09 16:40:17,058 INFO L153 SettingsManager]: * Use SBE=true [2025-01-09 16:40:17,058 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-01-09 16:40:17,059 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-01-09 16:40:17,059 INFO L153 SettingsManager]: * sizeof long=4 [2025-01-09 16:40:17,059 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-01-09 16:40:17,059 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-01-09 16:40:17,059 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-01-09 16:40:17,059 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-01-09 16:40:17,059 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-01-09 16:40:17,059 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-01-09 16:40:17,059 INFO L153 SettingsManager]: * sizeof long double=12 [2025-01-09 16:40:17,059 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-01-09 16:40:17,059 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-01-09 16:40:17,060 INFO L153 SettingsManager]: * Use constant arrays=true [2025-01-09 16:40:17,060 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-01-09 16:40:17,060 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-09 16:40:17,060 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-09 16:40:17,060 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-09 16:40:17,060 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 16:40:17,060 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-01-09 16:40:17,060 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-09 16:40:17,060 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-09 16:40:17,060 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-09 16:40:17,060 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 16:40:17,061 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-01-09 16:40:17,061 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-01-09 16:40:17,061 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-01-09 16:40:17,061 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-01-09 16:40:17,061 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-01-09 16:40:17,061 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-01-09 16:40:17,061 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-01-09 16:40:17,061 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-01-09 16:40:17,061 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-01-09 16:40:17,061 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-01-09 16:40:17,061 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 -> c31f1603fd15e011308b2e8fcd1cd45b23f0b00ac0b8b466c4f212460081639c [2025-01-09 16:40:17,280 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-01-09 16:40:17,287 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-01-09 16:40:17,290 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-01-09 16:40:17,291 INFO L270 PluginConnector]: Initializing CDTParser... [2025-01-09 16:40:17,291 INFO L274 PluginConnector]: CDTParser initialized [2025-01-09 16:40:17,291 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/mult-dist.wvr.c [2025-01-09 16:40:18,489 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/38b62be76/7778f1f483ba40b19b63cd8aece1e8b7/FLAG4ae171c19 [2025-01-09 16:40:18,744 INFO L384 CDTParser]: Found 1 translation units. [2025-01-09 16:40:18,744 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/weaver/mult-dist.wvr.c [2025-01-09 16:40:18,777 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/38b62be76/7778f1f483ba40b19b63cd8aece1e8b7/FLAG4ae171c19 [2025-01-09 16:40:19,066 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/38b62be76/7778f1f483ba40b19b63cd8aece1e8b7 [2025-01-09 16:40:19,068 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-01-09 16:40:19,070 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-01-09 16:40:19,071 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-01-09 16:40:19,072 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-01-09 16:40:19,075 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-01-09 16:40:19,076 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 04:40:19" (1/1) ... [2025-01-09 16:40:19,077 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ffc4fec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:40:19, skipping insertion in model container [2025-01-09 16:40:19,077 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 04:40:19" (1/1) ... [2025-01-09 16:40:19,090 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-01-09 16:40:19,199 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/mult-dist.wvr.c[2155,2168] [2025-01-09 16:40:19,202 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-09 16:40:19,210 INFO L200 MainTranslator]: Completed pre-run [2025-01-09 16:40:19,220 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/mult-dist.wvr.c[2155,2168] [2025-01-09 16:40:19,221 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-09 16:40:19,234 INFO L204 MainTranslator]: Completed translation [2025-01-09 16:40:19,234 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:40:19 WrapperNode [2025-01-09 16:40:19,234 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-01-09 16:40:19,235 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-01-09 16:40:19,235 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-01-09 16:40:19,235 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-01-09 16:40:19,243 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:40:19" (1/1) ... [2025-01-09 16:40:19,252 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:40:19" (1/1) ... [2025-01-09 16:40:19,264 INFO L138 Inliner]: procedures = 21, calls = 10, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 54 [2025-01-09 16:40:19,265 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-01-09 16:40:19,265 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-01-09 16:40:19,265 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-01-09 16:40:19,265 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-01-09 16:40:19,270 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:40:19" (1/1) ... [2025-01-09 16:40:19,270 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:40:19" (1/1) ... [2025-01-09 16:40:19,271 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:40:19" (1/1) ... [2025-01-09 16:40:19,279 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 16:40:19,279 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:40:19" (1/1) ... [2025-01-09 16:40:19,279 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:40:19" (1/1) ... [2025-01-09 16:40:19,281 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:40:19" (1/1) ... [2025-01-09 16:40:19,282 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:40:19" (1/1) ... [2025-01-09 16:40:19,284 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:40:19" (1/1) ... [2025-01-09 16:40:19,284 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:40:19" (1/1) ... [2025-01-09 16:40:19,285 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:40:19" (1/1) ... [2025-01-09 16:40:19,286 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-01-09 16:40:19,287 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-01-09 16:40:19,287 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-01-09 16:40:19,287 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-01-09 16:40:19,288 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:40:19" (1/1) ... [2025-01-09 16:40:19,291 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 16:40:19,299 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 16:40:19,309 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 16:40:19,312 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 16:40:19,327 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-01-09 16:40:19,328 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-01-09 16:40:19,328 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-01-09 16:40:19,328 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-01-09 16:40:19,328 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-01-09 16:40:19,328 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-01-09 16:40:19,328 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-01-09 16:40:19,328 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-01-09 16:40:19,328 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-01-09 16:40:19,328 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-01-09 16:40:19,329 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 16:40:19,395 INFO L234 CfgBuilder]: Building ICFG [2025-01-09 16:40:19,397 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-01-09 16:40:19,490 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-01-09 16:40:19,490 INFO L283 CfgBuilder]: Performing block encoding [2025-01-09 16:40:19,571 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-01-09 16:40:19,572 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-01-09 16:40:19,572 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 04:40:19 BoogieIcfgContainer [2025-01-09 16:40:19,572 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-01-09 16:40:19,573 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-01-09 16:40:19,573 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-01-09 16:40:19,576 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-01-09 16:40:19,576 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.01 04:40:19" (1/3) ... [2025-01-09 16:40:19,577 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@cc9d582 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 04:40:19, skipping insertion in model container [2025-01-09 16:40:19,577 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:40:19" (2/3) ... [2025-01-09 16:40:19,577 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@cc9d582 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 04:40:19, skipping insertion in model container [2025-01-09 16:40:19,577 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 04:40:19" (3/3) ... [2025-01-09 16:40:19,578 INFO L128 eAbstractionObserver]: Analyzing ICFG mult-dist.wvr.c [2025-01-09 16:40:19,586 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-01-09 16:40:19,587 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG mult-dist.wvr.c that has 4 procedures, 23 locations, 1 initial locations, 3 loop locations, and 1 error locations. [2025-01-09 16:40:19,587 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-01-09 16:40:19,616 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2025-01-09 16:40:19,635 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 32 places, 25 transitions, 71 flow [2025-01-09 16:40:19,652 INFO L124 PetriNetUnfolderBase]: 3/22 cut-off events. [2025-01-09 16:40:19,653 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2025-01-09 16:40:19,655 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35 conditions, 22 events. 3/22 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 13 event pairs, 0 based on Foata normal form. 0/18 useless extension candidates. Maximal degree in co-relation 18. Up to 2 conditions per place. [2025-01-09 16:40:19,655 INFO L82 GeneralOperation]: Start removeDead. Operand has 32 places, 25 transitions, 71 flow [2025-01-09 16:40:19,656 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 28 places, 21 transitions, 60 flow [2025-01-09 16:40:19,661 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-01-09 16:40:19,668 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;@4b24eda, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-09 16:40:19,668 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2025-01-09 16:40:19,675 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-01-09 16:40:19,675 INFO L124 PetriNetUnfolderBase]: 3/20 cut-off events. [2025-01-09 16:40:19,675 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2025-01-09 16:40:19,675 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:40:19,675 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 16:40:19,675 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-01-09 16:40:19,679 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:40:19,679 INFO L85 PathProgramCache]: Analyzing trace with hash 2089509244, now seen corresponding path program 1 times [2025-01-09 16:40:19,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:40:19,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752979499] [2025-01-09 16:40:19,684 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 16:40:19,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:40:19,731 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-01-09 16:40:19,753 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-01-09 16:40:19,753 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 16:40:19,753 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:40:20,072 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 16:40:20,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:40:20,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752979499] [2025-01-09 16:40:20,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [752979499] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 16:40:20,073 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 16:40:20,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-01-09 16:40:20,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534239626] [2025-01-09 16:40:20,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 16:40:20,078 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-09 16:40:20,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:40:20,093 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-09 16:40:20,093 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-09 16:40:20,094 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 25 [2025-01-09 16:40:20,096 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 21 transitions, 60 flow. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 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 16:40:20,096 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:40:20,096 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 25 [2025-01-09 16:40:20,096 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:40:20,209 INFO L124 PetriNetUnfolderBase]: 386/565 cut-off events. [2025-01-09 16:40:20,210 INFO L125 PetriNetUnfolderBase]: For 53/53 co-relation queries the response was YES. [2025-01-09 16:40:20,211 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1206 conditions, 565 events. 386/565 cut-off events. For 53/53 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1784 event pairs, 124 based on Foata normal form. 1/416 useless extension candidates. Maximal degree in co-relation 1030. Up to 349 conditions per place. [2025-01-09 16:40:20,215 INFO L140 encePairwiseOnDemand]: 20/25 looper letters, 32 selfloop transitions, 4 changer transitions 1/38 dead transitions. [2025-01-09 16:40:20,215 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 38 transitions, 183 flow [2025-01-09 16:40:20,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-09 16:40:20,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-01-09 16:40:20,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 50 transitions. [2025-01-09 16:40:20,222 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2025-01-09 16:40:20,223 INFO L175 Difference]: Start difference. First operand has 28 places, 21 transitions, 60 flow. Second operand 3 states and 50 transitions. [2025-01-09 16:40:20,224 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 38 transitions, 183 flow [2025-01-09 16:40:20,227 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 38 transitions, 161 flow, removed 0 selfloop flow, removed 6 redundant places. [2025-01-09 16:40:20,228 INFO L231 Difference]: Finished difference. Result has 25 places, 24 transitions, 74 flow [2025-01-09 16:40:20,230 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=74, PETRI_PLACES=25, PETRI_TRANSITIONS=24} [2025-01-09 16:40:20,232 INFO L279 CegarLoopForPetriNet]: 28 programPoint places, -3 predicate places. [2025-01-09 16:40:20,232 INFO L471 AbstractCegarLoop]: Abstraction has has 25 places, 24 transitions, 74 flow [2025-01-09 16:40:20,232 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 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 16:40:20,232 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:40:20,232 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 16:40:20,233 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-01-09 16:40:20,233 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-01-09 16:40:20,233 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:40:20,233 INFO L85 PathProgramCache]: Analyzing trace with hash -291705639, now seen corresponding path program 1 times [2025-01-09 16:40:20,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:40:20,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156705167] [2025-01-09 16:40:20,233 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 16:40:20,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:40:20,242 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-01-09 16:40:20,266 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-01-09 16:40:20,269 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 16:40:20,269 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:40:20,455 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 16:40:20,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:40:20,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156705167] [2025-01-09 16:40:20,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1156705167] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 16:40:20,455 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 16:40:20,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-01-09 16:40:20,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856812017] [2025-01-09 16:40:20,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 16:40:20,457 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-01-09 16:40:20,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:40:20,457 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-01-09 16:40:20,457 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2025-01-09 16:40:20,457 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 25 [2025-01-09 16:40:20,458 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 24 transitions, 74 flow. Second operand has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 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 16:40:20,458 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:40:20,458 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 25 [2025-01-09 16:40:20,458 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:40:20,738 INFO L124 PetriNetUnfolderBase]: 544/771 cut-off events. [2025-01-09 16:40:20,739 INFO L125 PetriNetUnfolderBase]: For 147/147 co-relation queries the response was YES. [2025-01-09 16:40:20,742 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1913 conditions, 771 events. 544/771 cut-off events. For 147/147 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2513 event pairs, 203 based on Foata normal form. 2/773 useless extension candidates. Maximal degree in co-relation 545. Up to 554 conditions per place. [2025-01-09 16:40:20,748 INFO L140 encePairwiseOnDemand]: 16/25 looper letters, 47 selfloop transitions, 18 changer transitions 3/69 dead transitions. [2025-01-09 16:40:20,748 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 69 transitions, 347 flow [2025-01-09 16:40:20,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-01-09 16:40:20,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-01-09 16:40:20,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 87 transitions. [2025-01-09 16:40:20,750 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.49714285714285716 [2025-01-09 16:40:20,750 INFO L175 Difference]: Start difference. First operand has 25 places, 24 transitions, 74 flow. Second operand 7 states and 87 transitions. [2025-01-09 16:40:20,750 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 69 transitions, 347 flow [2025-01-09 16:40:20,751 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 69 transitions, 334 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-01-09 16:40:20,753 INFO L231 Difference]: Finished difference. Result has 34 places, 40 transitions, 198 flow [2025-01-09 16:40:20,754 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=198, PETRI_PLACES=34, PETRI_TRANSITIONS=40} [2025-01-09 16:40:20,755 INFO L279 CegarLoopForPetriNet]: 28 programPoint places, 6 predicate places. [2025-01-09 16:40:20,755 INFO L471 AbstractCegarLoop]: Abstraction has has 34 places, 40 transitions, 198 flow [2025-01-09 16:40:20,755 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 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 16:40:20,755 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:40:20,755 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 16:40:20,755 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-01-09 16:40:20,756 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-01-09 16:40:20,757 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:40:20,757 INFO L85 PathProgramCache]: Analyzing trace with hash 1692053784, now seen corresponding path program 1 times [2025-01-09 16:40:20,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:40:20,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1446835536] [2025-01-09 16:40:20,757 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 16:40:20,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:40:20,769 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-01-09 16:40:20,787 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-01-09 16:40:20,790 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 16:40:20,790 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:40:21,031 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 16:40:21,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:40:21,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1446835536] [2025-01-09 16:40:21,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1446835536] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 16:40:21,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [996203393] [2025-01-09 16:40:21,033 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 16:40:21,033 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:40:21,033 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 16:40:21,038 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 16:40:21,045 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 16:40:21,091 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-01-09 16:40:21,120 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-01-09 16:40:21,121 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 16:40:21,121 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:40:21,122 INFO L256 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-01-09 16:40:21,125 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 16:40:21,235 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 16:40:21,235 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 16:40:21,866 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 16:40:21,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [996203393] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 16:40:21,867 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 16:40:21,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 15 [2025-01-09 16:40:21,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81473307] [2025-01-09 16:40:21,868 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 16:40:21,868 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-01-09 16:40:21,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:40:21,869 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-01-09 16:40:21,869 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2025-01-09 16:40:21,869 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 25 [2025-01-09 16:40:21,870 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 40 transitions, 198 flow. Second operand has 15 states, 15 states have (on average 6.2) internal successors, (93), 15 states have internal predecessors, (93), 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 16:40:21,870 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:40:21,870 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 25 [2025-01-09 16:40:21,871 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:40:23,075 INFO L124 PetriNetUnfolderBase]: 1135/1672 cut-off events. [2025-01-09 16:40:23,075 INFO L125 PetriNetUnfolderBase]: For 1348/1348 co-relation queries the response was YES. [2025-01-09 16:40:23,078 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5285 conditions, 1672 events. 1135/1672 cut-off events. For 1348/1348 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 7026 event pairs, 142 based on Foata normal form. 24/1696 useless extension candidates. Maximal degree in co-relation 3157. Up to 542 conditions per place. [2025-01-09 16:40:23,086 INFO L140 encePairwiseOnDemand]: 16/25 looper letters, 170 selfloop transitions, 60 changer transitions 0/231 dead transitions. [2025-01-09 16:40:23,086 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 231 transitions, 1367 flow [2025-01-09 16:40:23,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2025-01-09 16:40:23,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2025-01-09 16:40:23,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 300 transitions. [2025-01-09 16:40:23,089 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5454545454545454 [2025-01-09 16:40:23,090 INFO L175 Difference]: Start difference. First operand has 34 places, 40 transitions, 198 flow. Second operand 22 states and 300 transitions. [2025-01-09 16:40:23,090 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 231 transitions, 1367 flow [2025-01-09 16:40:23,096 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 231 transitions, 1345 flow, removed 11 selfloop flow, removed 0 redundant places. [2025-01-09 16:40:23,098 INFO L231 Difference]: Finished difference. Result has 71 places, 94 transitions, 718 flow [2025-01-09 16:40:23,098 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=718, PETRI_PLACES=71, PETRI_TRANSITIONS=94} [2025-01-09 16:40:23,099 INFO L279 CegarLoopForPetriNet]: 28 programPoint places, 43 predicate places. [2025-01-09 16:40:23,099 INFO L471 AbstractCegarLoop]: Abstraction has has 71 places, 94 transitions, 718 flow [2025-01-09 16:40:23,099 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.2) internal successors, (93), 15 states have internal predecessors, (93), 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 16:40:23,099 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:40:23,099 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 16:40:23,105 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 16:40:23,300 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 16:40:23,300 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-01-09 16:40:23,301 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:40:23,301 INFO L85 PathProgramCache]: Analyzing trace with hash 638121159, now seen corresponding path program 2 times [2025-01-09 16:40:23,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:40:23,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85087752] [2025-01-09 16:40:23,301 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 16:40:23,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:40:23,307 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 19 statements into 2 equivalence classes. [2025-01-09 16:40:23,317 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-01-09 16:40:23,317 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 16:40:23,318 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:40:23,435 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 16:40:23,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:40:23,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85087752] [2025-01-09 16:40:23,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [85087752] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 16:40:23,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [277893661] [2025-01-09 16:40:23,436 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 16:40:23,436 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:40:23,436 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 16:40:23,437 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 16:40:23,439 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 16:40:23,465 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 19 statements into 2 equivalence classes. [2025-01-09 16:40:23,481 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-01-09 16:40:23,481 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 16:40:23,481 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:40:23,482 INFO L256 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-01-09 16:40:23,483 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 16:40:23,546 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 16:40:23,547 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-09 16:40:23,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [277893661] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 16:40:23,547 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-01-09 16:40:23,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 8 [2025-01-09 16:40:23,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396078587] [2025-01-09 16:40:23,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 16:40:23,547 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-01-09 16:40:23,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:40:23,548 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-01-09 16:40:23,548 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2025-01-09 16:40:23,548 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 25 [2025-01-09 16:40:23,548 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 94 transitions, 718 flow. Second operand has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 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 16:40:23,548 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:40:23,548 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 25 [2025-01-09 16:40:23,548 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:40:24,018 INFO L124 PetriNetUnfolderBase]: 1536/2293 cut-off events. [2025-01-09 16:40:24,018 INFO L125 PetriNetUnfolderBase]: For 21136/21136 co-relation queries the response was YES. [2025-01-09 16:40:24,024 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12756 conditions, 2293 events. 1536/2293 cut-off events. For 21136/21136 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 10338 event pairs, 475 based on Foata normal form. 8/2301 useless extension candidates. Maximal degree in co-relation 9708. Up to 1296 conditions per place. [2025-01-09 16:40:24,035 INFO L140 encePairwiseOnDemand]: 16/25 looper letters, 150 selfloop transitions, 30 changer transitions 4/185 dead transitions. [2025-01-09 16:40:24,035 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 185 transitions, 1736 flow [2025-01-09 16:40:24,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-01-09 16:40:24,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-01-09 16:40:24,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 92 transitions. [2025-01-09 16:40:24,036 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5257142857142857 [2025-01-09 16:40:24,037 INFO L175 Difference]: Start difference. First operand has 71 places, 94 transitions, 718 flow. Second operand 7 states and 92 transitions. [2025-01-09 16:40:24,037 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 185 transitions, 1736 flow [2025-01-09 16:40:24,072 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 185 transitions, 1600 flow, removed 68 selfloop flow, removed 0 redundant places. [2025-01-09 16:40:24,074 INFO L231 Difference]: Finished difference. Result has 82 places, 104 transitions, 861 flow [2025-01-09 16:40:24,074 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=614, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=861, PETRI_PLACES=82, PETRI_TRANSITIONS=104} [2025-01-09 16:40:24,075 INFO L279 CegarLoopForPetriNet]: 28 programPoint places, 54 predicate places. [2025-01-09 16:40:24,075 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 104 transitions, 861 flow [2025-01-09 16:40:24,075 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 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 16:40:24,075 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:40:24,075 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 16:40:24,083 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 16:40:24,279 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:40:24,279 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-01-09 16:40:24,280 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:40:24,280 INFO L85 PathProgramCache]: Analyzing trace with hash 613984208, now seen corresponding path program 2 times [2025-01-09 16:40:24,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:40:24,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950210224] [2025-01-09 16:40:24,280 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 16:40:24,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:40:24,284 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 19 statements into 2 equivalence classes. [2025-01-09 16:40:24,291 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-01-09 16:40:24,291 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 16:40:24,291 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:40:24,434 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 16:40:24,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:40:24,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950210224] [2025-01-09 16:40:24,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1950210224] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 16:40:24,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1221731977] [2025-01-09 16:40:24,434 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 16:40:24,434 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:40:24,435 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 16:40:24,439 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 16:40:24,441 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 16:40:24,467 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 19 statements into 2 equivalence classes. [2025-01-09 16:40:24,495 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-01-09 16:40:24,495 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 16:40:24,495 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:40:24,496 INFO L256 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-01-09 16:40:24,497 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 16:40:24,622 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:40:24,622 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 16:40:24,741 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 16:40:24,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1221731977] provided 1 perfect and 1 imperfect interpolant sequences [2025-01-09 16:40:24,742 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-01-09 16:40:24,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8, 8] total 16 [2025-01-09 16:40:24,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278889218] [2025-01-09 16:40:24,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 16:40:24,742 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-01-09 16:40:24,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:40:24,743 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-01-09 16:40:24,743 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=173, Unknown=0, NotChecked=0, Total=240 [2025-01-09 16:40:24,743 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 25 [2025-01-09 16:40:24,743 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 104 transitions, 861 flow. Second operand has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 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 16:40:24,743 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:40:24,743 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 25 [2025-01-09 16:40:24,743 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:40:25,265 INFO L124 PetriNetUnfolderBase]: 1896/2839 cut-off events. [2025-01-09 16:40:25,266 INFO L125 PetriNetUnfolderBase]: For 29199/29199 co-relation queries the response was YES. [2025-01-09 16:40:25,273 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17175 conditions, 2839 events. 1896/2839 cut-off events. For 29199/29199 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 13095 event pairs, 388 based on Foata normal form. 4/2843 useless extension candidates. Maximal degree in co-relation 13182. Up to 1003 conditions per place. [2025-01-09 16:40:25,288 INFO L140 encePairwiseOnDemand]: 17/25 looper letters, 150 selfloop transitions, 66 changer transitions 0/217 dead transitions. [2025-01-09 16:40:25,288 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 217 transitions, 2164 flow [2025-01-09 16:40:25,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-01-09 16:40:25,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2025-01-09 16:40:25,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 148 transitions. [2025-01-09 16:40:25,290 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5381818181818182 [2025-01-09 16:40:25,290 INFO L175 Difference]: Start difference. First operand has 82 places, 104 transitions, 861 flow. Second operand 11 states and 148 transitions. [2025-01-09 16:40:25,290 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 217 transitions, 2164 flow [2025-01-09 16:40:25,337 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 217 transitions, 2018 flow, removed 64 selfloop flow, removed 2 redundant places. [2025-01-09 16:40:25,340 INFO L231 Difference]: Finished difference. Result has 96 places, 140 transitions, 1390 flow [2025-01-09 16:40:25,340 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=792, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1390, PETRI_PLACES=96, PETRI_TRANSITIONS=140} [2025-01-09 16:40:25,341 INFO L279 CegarLoopForPetriNet]: 28 programPoint places, 68 predicate places. [2025-01-09 16:40:25,341 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 140 transitions, 1390 flow [2025-01-09 16:40:25,341 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 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 16:40:25,341 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:40:25,341 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 16:40:25,347 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 16:40:25,541 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:40:25,542 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-01-09 16:40:25,542 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:40:25,542 INFO L85 PathProgramCache]: Analyzing trace with hash 1089203587, now seen corresponding path program 3 times [2025-01-09 16:40:25,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:40:25,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512365866] [2025-01-09 16:40:25,542 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-09 16:40:25,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:40:25,547 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 19 statements into 2 equivalence classes. [2025-01-09 16:40:25,553 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-01-09 16:40:25,553 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-01-09 16:40:25,553 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:40:25,715 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 16:40:25,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:40:25,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512365866] [2025-01-09 16:40:25,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1512365866] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 16:40:25,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1089923593] [2025-01-09 16:40:25,715 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-09 16:40:25,715 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:40:25,716 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 16:40:25,721 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 16:40:25,723 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 16:40:25,750 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 19 statements into 2 equivalence classes. [2025-01-09 16:40:25,768 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-01-09 16:40:25,768 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-01-09 16:40:25,768 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:40:25,770 INFO L256 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-01-09 16:40:25,771 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 16:40:25,888 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:40:25,891 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 16:40:26,002 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 16:40:26,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1089923593] provided 1 perfect and 1 imperfect interpolant sequences [2025-01-09 16:40:26,003 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-01-09 16:40:26,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8, 7] total 15 [2025-01-09 16:40:26,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510523976] [2025-01-09 16:40:26,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 16:40:26,003 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-01-09 16:40:26,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:40:26,003 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-01-09 16:40:26,003 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2025-01-09 16:40:26,004 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 25 [2025-01-09 16:40:26,004 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 140 transitions, 1390 flow. Second operand has 6 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 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 16:40:26,004 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:40:26,004 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 25 [2025-01-09 16:40:26,004 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:40:26,340 INFO L124 PetriNetUnfolderBase]: 2161/3187 cut-off events. [2025-01-09 16:40:26,341 INFO L125 PetriNetUnfolderBase]: For 39128/39128 co-relation queries the response was YES. [2025-01-09 16:40:26,351 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20251 conditions, 3187 events. 2161/3187 cut-off events. For 39128/39128 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 14741 event pairs, 660 based on Foata normal form. 12/3199 useless extension candidates. Maximal degree in co-relation 19461. Up to 1548 conditions per place. [2025-01-09 16:40:26,369 INFO L140 encePairwiseOnDemand]: 18/25 looper letters, 172 selfloop transitions, 34 changer transitions 1/208 dead transitions. [2025-01-09 16:40:26,369 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 208 transitions, 2459 flow [2025-01-09 16:40:26,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-01-09 16:40:26,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-01-09 16:40:26,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 87 transitions. [2025-01-09 16:40:26,370 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.58 [2025-01-09 16:40:26,370 INFO L175 Difference]: Start difference. First operand has 96 places, 140 transitions, 1390 flow. Second operand 6 states and 87 transitions. [2025-01-09 16:40:26,370 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 208 transitions, 2459 flow [2025-01-09 16:40:26,432 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 208 transitions, 2397 flow, removed 31 selfloop flow, removed 0 redundant places. [2025-01-09 16:40:26,434 INFO L231 Difference]: Finished difference. Result has 105 places, 157 transitions, 1727 flow [2025-01-09 16:40:26,434 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=1328, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1727, PETRI_PLACES=105, PETRI_TRANSITIONS=157} [2025-01-09 16:40:26,435 INFO L279 CegarLoopForPetriNet]: 28 programPoint places, 77 predicate places. [2025-01-09 16:40:26,435 INFO L471 AbstractCegarLoop]: Abstraction has has 105 places, 157 transitions, 1727 flow [2025-01-09 16:40:26,435 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 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 16:40:26,437 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:40:26,437 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 16:40:26,447 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 16:40:26,642 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,SelfDestructingSolverStorable5 [2025-01-09 16:40:26,642 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-01-09 16:40:26,643 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:40:26,643 INFO L85 PathProgramCache]: Analyzing trace with hash -1342421431, now seen corresponding path program 4 times [2025-01-09 16:40:26,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:40:26,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745519589] [2025-01-09 16:40:26,645 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-09 16:40:26,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:40:26,649 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 19 statements into 2 equivalence classes. [2025-01-09 16:40:26,659 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 16:40:26,660 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-01-09 16:40:26,660 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:40:26,799 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 16:40:26,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:40:26,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1745519589] [2025-01-09 16:40:26,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1745519589] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 16:40:26,800 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 16:40:26,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-01-09 16:40:26,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745301600] [2025-01-09 16:40:26,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 16:40:26,800 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-01-09 16:40:26,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:40:26,801 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-01-09 16:40:26,801 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2025-01-09 16:40:26,801 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 25 [2025-01-09 16:40:26,801 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 157 transitions, 1727 flow. Second operand has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 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 16:40:26,801 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:40:26,801 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 25 [2025-01-09 16:40:26,801 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:40:27,195 INFO L124 PetriNetUnfolderBase]: 2315/3451 cut-off events. [2025-01-09 16:40:27,195 INFO L125 PetriNetUnfolderBase]: For 54914/54914 co-relation queries the response was YES. [2025-01-09 16:40:27,206 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23615 conditions, 3451 events. 2315/3451 cut-off events. For 54914/54914 co-relation queries the response was YES. Maximal size of possible extension queue 199. Compared 16608 event pairs, 821 based on Foata normal form. 2/3453 useless extension candidates. Maximal degree in co-relation 22788. Up to 2572 conditions per place. [2025-01-09 16:40:27,221 INFO L140 encePairwiseOnDemand]: 16/25 looper letters, 184 selfloop transitions, 51 changer transitions 3/239 dead transitions. [2025-01-09 16:40:27,221 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 239 transitions, 3091 flow [2025-01-09 16:40:27,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-01-09 16:40:27,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-01-09 16:40:27,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 109 transitions. [2025-01-09 16:40:27,222 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.545 [2025-01-09 16:40:27,222 INFO L175 Difference]: Start difference. First operand has 105 places, 157 transitions, 1727 flow. Second operand 8 states and 109 transitions. [2025-01-09 16:40:27,222 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 239 transitions, 3091 flow [2025-01-09 16:40:27,396 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 239 transitions, 2974 flow, removed 51 selfloop flow, removed 1 redundant places. [2025-01-09 16:40:27,399 INFO L231 Difference]: Finished difference. Result has 115 places, 179 transitions, 2126 flow [2025-01-09 16:40:27,400 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=1614, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2126, PETRI_PLACES=115, PETRI_TRANSITIONS=179} [2025-01-09 16:40:27,400 INFO L279 CegarLoopForPetriNet]: 28 programPoint places, 87 predicate places. [2025-01-09 16:40:27,400 INFO L471 AbstractCegarLoop]: Abstraction has has 115 places, 179 transitions, 2126 flow [2025-01-09 16:40:27,400 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 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 16:40:27,401 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:40:27,401 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 16:40:27,401 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-01-09 16:40:27,401 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-01-09 16:40:27,401 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:40:27,401 INFO L85 PathProgramCache]: Analyzing trace with hash -870023705, now seen corresponding path program 5 times [2025-01-09 16:40:27,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:40:27,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499198674] [2025-01-09 16:40:27,402 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-09 16:40:27,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:40:27,407 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 19 statements into 2 equivalence classes. [2025-01-09 16:40:27,415 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-01-09 16:40:27,415 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 16:40:27,415 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:40:27,576 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 16:40:27,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:40:27,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499198674] [2025-01-09 16:40:27,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1499198674] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 16:40:27,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [600232304] [2025-01-09 16:40:27,577 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-09 16:40:27,577 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:40:27,577 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 16:40:27,582 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 16:40:27,589 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 16:40:27,610 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 19 statements into 2 equivalence classes. [2025-01-09 16:40:27,627 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-01-09 16:40:27,627 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 16:40:27,627 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:40:27,630 INFO L256 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-01-09 16:40:27,630 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 16:40:27,693 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 16:40:27,693 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 16:40:27,823 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 16:40:27,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [600232304] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 16:40:27,824 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 16:40:27,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 17 [2025-01-09 16:40:27,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103908562] [2025-01-09 16:40:27,824 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 16:40:27,824 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-01-09 16:40:27,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:40:27,825 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-01-09 16:40:27,825 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=198, Unknown=0, NotChecked=0, Total=272 [2025-01-09 16:40:27,825 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 25 [2025-01-09 16:40:27,825 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 179 transitions, 2126 flow. Second operand has 17 states, 17 states have (on average 5.705882352941177) internal successors, (97), 17 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 16:40:27,825 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:40:27,825 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 25 [2025-01-09 16:40:27,825 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:40:28,649 INFO L124 PetriNetUnfolderBase]: 2858/4215 cut-off events. [2025-01-09 16:40:28,650 INFO L125 PetriNetUnfolderBase]: For 82302/82302 co-relation queries the response was YES. [2025-01-09 16:40:28,661 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30753 conditions, 4215 events. 2858/4215 cut-off events. For 82302/82302 co-relation queries the response was YES. Maximal size of possible extension queue 246. Compared 20702 event pairs, 795 based on Foata normal form. 32/4247 useless extension candidates. Maximal degree in co-relation 29714. Up to 3152 conditions per place. [2025-01-09 16:40:28,676 INFO L140 encePairwiseOnDemand]: 16/25 looper letters, 235 selfloop transitions, 166 changer transitions 0/402 dead transitions. [2025-01-09 16:40:28,676 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 402 transitions, 5471 flow [2025-01-09 16:40:28,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2025-01-09 16:40:28,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2025-01-09 16:40:28,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 196 transitions. [2025-01-09 16:40:28,678 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.43555555555555553 [2025-01-09 16:40:28,678 INFO L175 Difference]: Start difference. First operand has 115 places, 179 transitions, 2126 flow. Second operand 18 states and 196 transitions. [2025-01-09 16:40:28,678 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 402 transitions, 5471 flow [2025-01-09 16:40:28,806 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 402 transitions, 5195 flow, removed 103 selfloop flow, removed 1 redundant places. [2025-01-09 16:40:28,812 INFO L231 Difference]: Finished difference. Result has 144 places, 294 transitions, 4147 flow [2025-01-09 16:40:28,812 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=1951, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=4147, PETRI_PLACES=144, PETRI_TRANSITIONS=294} [2025-01-09 16:40:28,813 INFO L279 CegarLoopForPetriNet]: 28 programPoint places, 116 predicate places. [2025-01-09 16:40:28,814 INFO L471 AbstractCegarLoop]: Abstraction has has 144 places, 294 transitions, 4147 flow [2025-01-09 16:40:28,814 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 5.705882352941177) internal successors, (97), 17 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 16:40:28,814 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:40:28,814 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 16:40:28,820 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 16:40:29,019 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 16:40:29,019 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-01-09 16:40:29,019 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:40:29,019 INFO L85 PathProgramCache]: Analyzing trace with hash 1951251581, now seen corresponding path program 1 times [2025-01-09 16:40:29,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:40:29,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191877285] [2025-01-09 16:40:29,019 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 16:40:29,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:40:29,023 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-01-09 16:40:29,029 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-01-09 16:40:29,030 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 16:40:29,030 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:40:29,149 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 16:40:29,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:40:29,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191877285] [2025-01-09 16:40:29,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [191877285] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 16:40:29,150 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 16:40:29,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-01-09 16:40:29,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313745722] [2025-01-09 16:40:29,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 16:40:29,150 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-01-09 16:40:29,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:40:29,151 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-01-09 16:40:29,151 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2025-01-09 16:40:29,151 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 25 [2025-01-09 16:40:29,151 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 294 transitions, 4147 flow. Second operand has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 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 16:40:29,152 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:40:29,152 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 25 [2025-01-09 16:40:29,152 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:40:29,738 INFO L124 PetriNetUnfolderBase]: 2906/4322 cut-off events. [2025-01-09 16:40:29,738 INFO L125 PetriNetUnfolderBase]: For 95160/95160 co-relation queries the response was YES. [2025-01-09 16:40:29,751 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35373 conditions, 4322 events. 2906/4322 cut-off events. For 95160/95160 co-relation queries the response was YES. Maximal size of possible extension queue 260. Compared 21677 event pairs, 753 based on Foata normal form. 24/4346 useless extension candidates. Maximal degree in co-relation 34970. Up to 2502 conditions per place. [2025-01-09 16:40:29,768 INFO L140 encePairwiseOnDemand]: 16/25 looper letters, 299 selfloop transitions, 67 changer transitions 13/380 dead transitions. [2025-01-09 16:40:29,768 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 380 transitions, 5984 flow [2025-01-09 16:40:29,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-01-09 16:40:29,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-01-09 16:40:29,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 96 transitions. [2025-01-09 16:40:29,769 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5485714285714286 [2025-01-09 16:40:29,769 INFO L175 Difference]: Start difference. First operand has 144 places, 294 transitions, 4147 flow. Second operand 7 states and 96 transitions. [2025-01-09 16:40:29,769 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 380 transitions, 5984 flow [2025-01-09 16:40:30,127 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 380 transitions, 5196 flow, removed 394 selfloop flow, removed 0 redundant places. [2025-01-09 16:40:30,131 INFO L231 Difference]: Finished difference. Result has 154 places, 297 transitions, 3756 flow [2025-01-09 16:40:30,131 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=3494, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=293, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=226, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3756, PETRI_PLACES=154, PETRI_TRANSITIONS=297} [2025-01-09 16:40:30,132 INFO L279 CegarLoopForPetriNet]: 28 programPoint places, 126 predicate places. [2025-01-09 16:40:30,132 INFO L471 AbstractCegarLoop]: Abstraction has has 154 places, 297 transitions, 3756 flow [2025-01-09 16:40:30,132 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 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 16:40:30,132 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:40:30,132 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 16:40:30,132 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-01-09 16:40:30,132 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-01-09 16:40:30,133 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:40:30,133 INFO L85 PathProgramCache]: Analyzing trace with hash 1739060470, now seen corresponding path program 3 times [2025-01-09 16:40:30,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:40:30,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043542608] [2025-01-09 16:40:30,133 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-09 16:40:30,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:40:30,136 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 19 statements into 2 equivalence classes. [2025-01-09 16:40:30,146 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-01-09 16:40:30,147 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-01-09 16:40:30,147 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:40:30,330 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 16:40:30,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:40:30,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1043542608] [2025-01-09 16:40:30,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1043542608] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 16:40:30,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [968058917] [2025-01-09 16:40:30,331 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-09 16:40:30,331 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:40:30,331 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 16:40:30,333 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 16:40:30,338 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 16:40:30,380 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 19 statements into 2 equivalence classes. [2025-01-09 16:40:30,399 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-01-09 16:40:30,400 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-01-09 16:40:30,400 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:40:30,401 INFO L256 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-01-09 16:40:30,401 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 16:40:30,475 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 16:40:30,475 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 16:40:30,756 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 16:40:30,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [968058917] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 16:40:30,756 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 16:40:30,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 15 [2025-01-09 16:40:30,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814268782] [2025-01-09 16:40:30,756 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 16:40:30,757 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-01-09 16:40:30,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:40:30,757 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-01-09 16:40:30,757 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2025-01-09 16:40:30,757 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 25 [2025-01-09 16:40:30,758 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 297 transitions, 3756 flow. Second operand has 15 states, 15 states have (on average 6.333333333333333) internal successors, (95), 15 states have internal predecessors, (95), 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 16:40:30,758 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:40:30,758 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 25 [2025-01-09 16:40:30,758 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:40:31,775 INFO L124 PetriNetUnfolderBase]: 3234/4860 cut-off events. [2025-01-09 16:40:31,776 INFO L125 PetriNetUnfolderBase]: For 81283/81283 co-relation queries the response was YES. [2025-01-09 16:40:31,789 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35111 conditions, 4860 events. 3234/4860 cut-off events. For 81283/81283 co-relation queries the response was YES. Maximal size of possible extension queue 281. Compared 25140 event pairs, 819 based on Foata normal form. 14/4874 useless extension candidates. Maximal degree in co-relation 34645. Up to 2134 conditions per place. [2025-01-09 16:40:31,805 INFO L140 encePairwiseOnDemand]: 16/25 looper letters, 259 selfloop transitions, 172 changer transitions 1/433 dead transitions. [2025-01-09 16:40:31,805 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 433 transitions, 6240 flow [2025-01-09 16:40:31,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-01-09 16:40:31,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2025-01-09 16:40:31,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 177 transitions. [2025-01-09 16:40:31,806 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5446153846153846 [2025-01-09 16:40:31,806 INFO L175 Difference]: Start difference. First operand has 154 places, 297 transitions, 3756 flow. Second operand 13 states and 177 transitions. [2025-01-09 16:40:31,806 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 433 transitions, 6240 flow [2025-01-09 16:40:31,966 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 433 transitions, 6081 flow, removed 20 selfloop flow, removed 3 redundant places. [2025-01-09 16:40:31,970 INFO L231 Difference]: Finished difference. Result has 166 places, 324 transitions, 4442 flow [2025-01-09 16:40:31,970 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=3626, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=297, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=146, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=4442, PETRI_PLACES=166, PETRI_TRANSITIONS=324} [2025-01-09 16:40:31,971 INFO L279 CegarLoopForPetriNet]: 28 programPoint places, 138 predicate places. [2025-01-09 16:40:31,971 INFO L471 AbstractCegarLoop]: Abstraction has has 166 places, 324 transitions, 4442 flow [2025-01-09 16:40:31,971 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.333333333333333) internal successors, (95), 15 states have internal predecessors, (95), 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 16:40:31,971 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:40:31,971 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 16:40:31,977 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 16:40:32,176 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,SelfDestructingSolverStorable9 [2025-01-09 16:40:32,176 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-01-09 16:40:32,177 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:40:32,177 INFO L85 PathProgramCache]: Analyzing trace with hash -1153412335, now seen corresponding path program 6 times [2025-01-09 16:40:32,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:40:32,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576848765] [2025-01-09 16:40:32,177 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-09 16:40:32,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:40:32,181 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 19 statements into 2 equivalence classes. [2025-01-09 16:40:32,186 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-01-09 16:40:32,186 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2025-01-09 16:40:32,186 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:40:32,308 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 16:40:32,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:40:32,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576848765] [2025-01-09 16:40:32,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [576848765] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 16:40:32,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1843374651] [2025-01-09 16:40:32,308 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-09 16:40:32,308 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:40:32,309 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 16:40:32,312 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 16:40:32,314 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 16:40:32,340 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 19 statements into 2 equivalence classes. [2025-01-09 16:40:32,360 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-01-09 16:40:32,361 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2025-01-09 16:40:32,361 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:40:32,363 INFO L256 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-01-09 16:40:32,365 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 16:40:32,489 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 16:40:32,489 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 16:40:32,579 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 16:40:32,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1843374651] provided 1 perfect and 1 imperfect interpolant sequences [2025-01-09 16:40:32,580 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-01-09 16:40:32,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8, 8] total 15 [2025-01-09 16:40:32,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760628546] [2025-01-09 16:40:32,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 16:40:32,580 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-01-09 16:40:32,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:40:32,580 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-01-09 16:40:32,581 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2025-01-09 16:40:32,581 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 25 [2025-01-09 16:40:32,581 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 324 transitions, 4442 flow. Second operand has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 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 16:40:32,581 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:40:32,581 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 25 [2025-01-09 16:40:32,581 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:40:33,528 INFO L124 PetriNetUnfolderBase]: 4270/6376 cut-off events. [2025-01-09 16:40:33,529 INFO L125 PetriNetUnfolderBase]: For 120303/120303 co-relation queries the response was YES. [2025-01-09 16:40:33,552 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49030 conditions, 6376 events. 4270/6376 cut-off events. For 120303/120303 co-relation queries the response was YES. Maximal size of possible extension queue 373. Compared 34588 event pairs, 608 based on Foata normal form. 6/6382 useless extension candidates. Maximal degree in co-relation 48401. Up to 2107 conditions per place. [2025-01-09 16:40:33,575 INFO L140 encePairwiseOnDemand]: 17/25 looper letters, 377 selfloop transitions, 136 changer transitions 1/515 dead transitions. [2025-01-09 16:40:33,575 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 515 transitions, 7878 flow [2025-01-09 16:40:33,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-01-09 16:40:33,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2025-01-09 16:40:33,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 152 transitions. [2025-01-09 16:40:33,576 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5527272727272727 [2025-01-09 16:40:33,576 INFO L175 Difference]: Start difference. First operand has 166 places, 324 transitions, 4442 flow. Second operand 11 states and 152 transitions. [2025-01-09 16:40:33,576 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 515 transitions, 7878 flow [2025-01-09 16:40:33,950 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 515 transitions, 7567 flow, removed 62 selfloop flow, removed 3 redundant places. [2025-01-09 16:40:33,955 INFO L231 Difference]: Finished difference. Result has 180 places, 400 transitions, 5962 flow [2025-01-09 16:40:33,955 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=4172, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=324, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=212, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5962, PETRI_PLACES=180, PETRI_TRANSITIONS=400} [2025-01-09 16:40:33,955 INFO L279 CegarLoopForPetriNet]: 28 programPoint places, 152 predicate places. [2025-01-09 16:40:33,955 INFO L471 AbstractCegarLoop]: Abstraction has has 180 places, 400 transitions, 5962 flow [2025-01-09 16:40:33,955 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 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 16:40:33,955 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:40:33,955 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 16:40:33,961 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2025-01-09 16:40:34,160 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:40:34,160 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-01-09 16:40:34,161 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:40:34,161 INFO L85 PathProgramCache]: Analyzing trace with hash -1628703805, now seen corresponding path program 7 times [2025-01-09 16:40:34,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:40:34,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028994069] [2025-01-09 16:40:34,161 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-01-09 16:40:34,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:40:34,164 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-01-09 16:40:34,167 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-01-09 16:40:34,167 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 16:40:34,167 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:40:34,244 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 16:40:34,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:40:34,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028994069] [2025-01-09 16:40:34,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2028994069] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 16:40:34,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2082024836] [2025-01-09 16:40:34,245 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-01-09 16:40:34,245 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:40:34,245 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 16:40:34,246 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 16:40:34,251 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 16:40:34,278 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-01-09 16:40:34,293 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-01-09 16:40:34,294 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 16:40:34,294 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:40:34,295 INFO L256 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-01-09 16:40:34,295 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 16:40:34,355 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 16:40:34,355 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 16:40:34,497 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 16:40:34,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2082024836] provided 1 perfect and 1 imperfect interpolant sequences [2025-01-09 16:40:34,497 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-01-09 16:40:34,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 7] total 11 [2025-01-09 16:40:34,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669044968] [2025-01-09 16:40:34,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 16:40:34,498 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-01-09 16:40:34,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:40:34,499 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-01-09 16:40:34,499 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2025-01-09 16:40:34,499 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 25 [2025-01-09 16:40:34,499 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 400 transitions, 5962 flow. Second operand has 6 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 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 16:40:34,500 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:40:34,500 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 25 [2025-01-09 16:40:34,500 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:40:35,445 INFO L124 PetriNetUnfolderBase]: 5184/7705 cut-off events. [2025-01-09 16:40:35,445 INFO L125 PetriNetUnfolderBase]: For 186974/186974 co-relation queries the response was YES. [2025-01-09 16:40:35,480 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64514 conditions, 7705 events. 5184/7705 cut-off events. For 186974/186974 co-relation queries the response was YES. Maximal size of possible extension queue 482. Compared 42894 event pairs, 737 based on Foata normal form. 13/7718 useless extension candidates. Maximal degree in co-relation 63863. Up to 3894 conditions per place. [2025-01-09 16:40:35,512 INFO L140 encePairwiseOnDemand]: 16/25 looper letters, 404 selfloop transitions, 237 changer transitions 3/645 dead transitions. [2025-01-09 16:40:35,512 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 645 transitions, 11210 flow [2025-01-09 16:40:35,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-01-09 16:40:35,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-01-09 16:40:35,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 102 transitions. [2025-01-09 16:40:35,513 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5828571428571429 [2025-01-09 16:40:35,513 INFO L175 Difference]: Start difference. First operand has 180 places, 400 transitions, 5962 flow. Second operand 7 states and 102 transitions. [2025-01-09 16:40:35,516 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 645 transitions, 11210 flow [2025-01-09 16:40:36,307 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 645 transitions, 10782 flow, removed 193 selfloop flow, removed 1 redundant places. [2025-01-09 16:40:36,317 INFO L231 Difference]: Finished difference. Result has 190 places, 536 transitions, 8987 flow [2025-01-09 16:40:36,318 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=5700, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=400, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=108, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=206, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=8987, PETRI_PLACES=190, PETRI_TRANSITIONS=536} [2025-01-09 16:40:36,320 INFO L279 CegarLoopForPetriNet]: 28 programPoint places, 162 predicate places. [2025-01-09 16:40:36,320 INFO L471 AbstractCegarLoop]: Abstraction has has 190 places, 536 transitions, 8987 flow [2025-01-09 16:40:36,320 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 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 16:40:36,320 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:40:36,320 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 16:40:36,326 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2025-01-09 16:40:36,521 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,9 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:40:36,521 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-01-09 16:40:36,523 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:40:36,523 INFO L85 PathProgramCache]: Analyzing trace with hash -1202381885, now seen corresponding path program 8 times [2025-01-09 16:40:36,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:40:36,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478149357] [2025-01-09 16:40:36,523 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 16:40:36,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:40:36,527 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 19 statements into 2 equivalence classes. [2025-01-09 16:40:36,541 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-01-09 16:40:36,542 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 16:40:36,542 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:40:36,674 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 16:40:36,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:40:36,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478149357] [2025-01-09 16:40:36,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [478149357] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 16:40:36,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1914429313] [2025-01-09 16:40:36,675 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 16:40:36,675 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:40:36,675 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 16:40:36,677 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 16:40:36,678 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 16:40:36,708 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 19 statements into 2 equivalence classes. [2025-01-09 16:40:36,729 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-01-09 16:40:36,729 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 16:40:36,729 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:40:36,732 INFO L256 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-01-09 16:40:36,733 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 16:40:36,808 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 16:40:36,809 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 16:40:37,190 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 16:40:37,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1914429313] provided 1 perfect and 1 imperfect interpolant sequences [2025-01-09 16:40:37,191 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-01-09 16:40:37,191 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8, 7] total 14 [2025-01-09 16:40:37,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606826456] [2025-01-09 16:40:37,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 16:40:37,191 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-01-09 16:40:37,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:40:37,192 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-01-09 16:40:37,192 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2025-01-09 16:40:37,192 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 25 [2025-01-09 16:40:37,193 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 536 transitions, 8987 flow. Second operand has 6 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 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 16:40:37,193 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:40:37,193 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 25 [2025-01-09 16:40:37,193 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:40:38,601 INFO L124 PetriNetUnfolderBase]: 5309/7973 cut-off events. [2025-01-09 16:40:38,601 INFO L125 PetriNetUnfolderBase]: For 206372/206372 co-relation queries the response was YES. [2025-01-09 16:40:38,636 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69352 conditions, 7973 events. 5309/7973 cut-off events. For 206372/206372 co-relation queries the response was YES. Maximal size of possible extension queue 505. Compared 45316 event pairs, 843 based on Foata normal form. 26/7999 useless extension candidates. Maximal degree in co-relation 68695. Up to 2549 conditions per place. [2025-01-09 16:40:38,667 INFO L140 encePairwiseOnDemand]: 18/25 looper letters, 415 selfloop transitions, 257 changer transitions 2/675 dead transitions. [2025-01-09 16:40:38,667 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 675 transitions, 12360 flow [2025-01-09 16:40:38,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-01-09 16:40:38,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-01-09 16:40:38,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 123 transitions. [2025-01-09 16:40:38,668 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.615 [2025-01-09 16:40:38,668 INFO L175 Difference]: Start difference. First operand has 190 places, 536 transitions, 8987 flow. Second operand 8 states and 123 transitions. [2025-01-09 16:40:38,668 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 675 transitions, 12360 flow [2025-01-09 16:40:39,587 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 675 transitions, 12080 flow, removed 140 selfloop flow, removed 0 redundant places. [2025-01-09 16:40:39,595 INFO L231 Difference]: Finished difference. Result has 200 places, 561 transitions, 10076 flow [2025-01-09 16:40:39,595 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=8841, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=536, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=232, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=296, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=10076, PETRI_PLACES=200, PETRI_TRANSITIONS=561} [2025-01-09 16:40:39,596 INFO L279 CegarLoopForPetriNet]: 28 programPoint places, 172 predicate places. [2025-01-09 16:40:39,596 INFO L471 AbstractCegarLoop]: Abstraction has has 200 places, 561 transitions, 10076 flow [2025-01-09 16:40:39,596 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 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 16:40:39,596 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:40:39,596 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 16:40:39,602 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2025-01-09 16:40:39,796 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,10 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:40:39,797 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-01-09 16:40:39,797 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:40:39,797 INFO L85 PathProgramCache]: Analyzing trace with hash -257659607, now seen corresponding path program 9 times [2025-01-09 16:40:39,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:40:39,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029880119] [2025-01-09 16:40:39,797 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-09 16:40:39,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:40:39,800 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 19 statements into 2 equivalence classes. [2025-01-09 16:40:39,805 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-01-09 16:40:39,805 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-01-09 16:40:39,805 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:40:39,899 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 16:40:39,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:40:39,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2029880119] [2025-01-09 16:40:39,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2029880119] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 16:40:39,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1112378675] [2025-01-09 16:40:39,900 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-09 16:40:39,900 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:40:39,900 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 16:40:39,905 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 16:40:39,908 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 16:40:39,941 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 19 statements into 2 equivalence classes. [2025-01-09 16:40:39,960 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-01-09 16:40:39,961 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-01-09 16:40:39,961 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:40:39,962 INFO L256 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-01-09 16:40:39,962 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 16:40:40,012 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 16:40:40,013 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 16:40:40,081 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 16:40:40,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1112378675] provided 1 perfect and 1 imperfect interpolant sequences [2025-01-09 16:40:40,082 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-01-09 16:40:40,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8, 8] total 12 [2025-01-09 16:40:40,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645940505] [2025-01-09 16:40:40,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 16:40:40,082 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-01-09 16:40:40,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:40:40,083 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-01-09 16:40:40,083 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2025-01-09 16:40:40,083 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 25 [2025-01-09 16:40:40,083 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 561 transitions, 10076 flow. Second operand has 6 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 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 16:40:40,083 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:40:40,083 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 25 [2025-01-09 16:40:40,084 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:40:41,302 INFO L124 PetriNetUnfolderBase]: 5338/8028 cut-off events. [2025-01-09 16:40:41,302 INFO L125 PetriNetUnfolderBase]: For 210950/210950 co-relation queries the response was YES. [2025-01-09 16:40:41,459 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70420 conditions, 8028 events. 5338/8028 cut-off events. For 210950/210950 co-relation queries the response was YES. Maximal size of possible extension queue 514. Compared 45958 event pairs, 1206 based on Foata normal form. 29/8057 useless extension candidates. Maximal degree in co-relation 69759. Up to 4510 conditions per place. [2025-01-09 16:40:41,489 INFO L140 encePairwiseOnDemand]: 18/25 looper letters, 542 selfloop transitions, 97 changer transitions 2/642 dead transitions. [2025-01-09 16:40:41,489 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 642 transitions, 12475 flow [2025-01-09 16:40:41,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-01-09 16:40:41,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-01-09 16:40:41,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 86 transitions. [2025-01-09 16:40:41,490 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5733333333333334 [2025-01-09 16:40:41,490 INFO L175 Difference]: Start difference. First operand has 200 places, 561 transitions, 10076 flow. Second operand 6 states and 86 transitions. [2025-01-09 16:40:41,490 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 642 transitions, 12475 flow [2025-01-09 16:40:42,483 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 642 transitions, 12296 flow, removed 50 selfloop flow, removed 1 redundant places. [2025-01-09 16:40:42,492 INFO L231 Difference]: Finished difference. Result has 204 places, 567 transitions, 10283 flow [2025-01-09 16:40:42,492 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=9931, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=561, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=470, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=10283, PETRI_PLACES=204, PETRI_TRANSITIONS=567} [2025-01-09 16:40:42,493 INFO L279 CegarLoopForPetriNet]: 28 programPoint places, 176 predicate places. [2025-01-09 16:40:42,493 INFO L471 AbstractCegarLoop]: Abstraction has has 204 places, 567 transitions, 10283 flow [2025-01-09 16:40:42,493 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 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 16:40:42,493 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:40:42,493 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 16:40:42,500 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 16:40:42,693 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,SelfDestructingSolverStorable13 [2025-01-09 16:40:42,694 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-01-09 16:40:42,694 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:40:42,694 INFO L85 PathProgramCache]: Analyzing trace with hash -99094831, now seen corresponding path program 10 times [2025-01-09 16:40:42,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:40:42,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583569787] [2025-01-09 16:40:42,694 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-09 16:40:42,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:40:42,697 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 19 statements into 2 equivalence classes. [2025-01-09 16:40:42,712 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 16:40:42,712 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-01-09 16:40:42,712 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:40:42,794 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 16:40:42,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:40:42,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583569787] [2025-01-09 16:40:42,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1583569787] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 16:40:42,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [80280876] [2025-01-09 16:40:42,794 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-09 16:40:42,794 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:40:42,794 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 16:40:42,796 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 16:40:42,799 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 16:40:42,825 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 19 statements into 2 equivalence classes. [2025-01-09 16:40:42,841 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 16:40:42,842 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-01-09 16:40:42,842 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:40:42,842 INFO L256 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-01-09 16:40:42,843 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 16:40:42,926 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 16:40:42,926 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 16:40:42,999 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 16:40:43,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [80280876] provided 1 perfect and 1 imperfect interpolant sequences [2025-01-09 16:40:43,000 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-01-09 16:40:43,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 7] total 12 [2025-01-09 16:40:43,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852671895] [2025-01-09 16:40:43,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 16:40:43,001 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-01-09 16:40:43,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:40:43,001 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-01-09 16:40:43,002 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2025-01-09 16:40:43,002 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 25 [2025-01-09 16:40:43,002 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 567 transitions, 10283 flow. Second operand has 6 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 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 16:40:43,002 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:40:43,002 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 25 [2025-01-09 16:40:43,002 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:40:44,473 INFO L124 PetriNetUnfolderBase]: 5588/8371 cut-off events. [2025-01-09 16:40:44,474 INFO L125 PetriNetUnfolderBase]: For 208187/208187 co-relation queries the response was YES. [2025-01-09 16:40:44,519 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72778 conditions, 8371 events. 5588/8371 cut-off events. For 208187/208187 co-relation queries the response was YES. Maximal size of possible extension queue 541. Compared 47913 event pairs, 1214 based on Foata normal form. 29/8400 useless extension candidates. Maximal degree in co-relation 72234. Up to 4456 conditions per place. [2025-01-09 16:40:44,558 INFO L140 encePairwiseOnDemand]: 18/25 looper letters, 505 selfloop transitions, 169 changer transitions 2/677 dead transitions. [2025-01-09 16:40:44,559 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 677 transitions, 13385 flow [2025-01-09 16:40:44,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-01-09 16:40:44,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-01-09 16:40:44,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 85 transitions. [2025-01-09 16:40:44,559 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5666666666666667 [2025-01-09 16:40:44,560 INFO L175 Difference]: Start difference. First operand has 204 places, 567 transitions, 10283 flow. Second operand 6 states and 85 transitions. [2025-01-09 16:40:44,560 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 677 transitions, 13385 flow [2025-01-09 16:40:46,045 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 677 transitions, 13161 flow, removed 6 selfloop flow, removed 4 redundant places. [2025-01-09 16:40:46,064 INFO L231 Difference]: Finished difference. Result has 208 places, 605 transitions, 11391 flow [2025-01-09 16:40:46,067 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=10077, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=567, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=131, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=398, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=11391, PETRI_PLACES=208, PETRI_TRANSITIONS=605} [2025-01-09 16:40:46,068 INFO L279 CegarLoopForPetriNet]: 28 programPoint places, 180 predicate places. [2025-01-09 16:40:46,068 INFO L471 AbstractCegarLoop]: Abstraction has has 208 places, 605 transitions, 11391 flow [2025-01-09 16:40:46,068 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 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 16:40:46,068 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:40:46,068 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 16:40:46,074 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2025-01-09 16:40:46,268 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,SelfDestructingSolverStorable14 [2025-01-09 16:40:46,269 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-01-09 16:40:46,269 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:40:46,269 INFO L85 PathProgramCache]: Analyzing trace with hash -1791868759, now seen corresponding path program 11 times [2025-01-09 16:40:46,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:40:46,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794025532] [2025-01-09 16:40:46,270 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-09 16:40:46,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:40:46,277 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 19 statements into 2 equivalence classes. [2025-01-09 16:40:46,286 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-01-09 16:40:46,287 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 16:40:46,287 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:40:46,446 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 16:40:46,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:40:46,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794025532] [2025-01-09 16:40:46,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [794025532] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 16:40:46,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [154385623] [2025-01-09 16:40:46,447 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-09 16:40:46,447 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:40:46,447 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 16:40:46,454 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 16:40:46,455 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 16:40:46,497 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 19 statements into 2 equivalence classes. [2025-01-09 16:40:46,513 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-01-09 16:40:46,513 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 16:40:46,513 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:40:46,516 INFO L256 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-01-09 16:40:46,516 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 16:40:46,567 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 16:40:46,567 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 16:40:46,613 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 16:40:46,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [154385623] provided 1 perfect and 1 imperfect interpolant sequences [2025-01-09 16:40:46,613 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-01-09 16:40:46,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8, 8] total 13 [2025-01-09 16:40:46,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646194108] [2025-01-09 16:40:46,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 16:40:46,614 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-01-09 16:40:46,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:40:46,614 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-01-09 16:40:46,614 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2025-01-09 16:40:46,615 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 25 [2025-01-09 16:40:46,615 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 605 transitions, 11391 flow. Second operand has 6 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 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 16:40:46,615 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:40:46,615 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 25 [2025-01-09 16:40:46,616 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:40:47,872 INFO L124 PetriNetUnfolderBase]: 5639/8456 cut-off events. [2025-01-09 16:40:47,872 INFO L125 PetriNetUnfolderBase]: For 218955/218955 co-relation queries the response was YES. [2025-01-09 16:40:47,914 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75647 conditions, 8456 events. 5639/8456 cut-off events. For 218955/218955 co-relation queries the response was YES. Maximal size of possible extension queue 552. Compared 48553 event pairs, 734 based on Foata normal form. 26/8482 useless extension candidates. Maximal degree in co-relation 74982. Up to 2743 conditions per place. [2025-01-09 16:40:47,951 INFO L140 encePairwiseOnDemand]: 18/25 looper letters, 478 selfloop transitions, 231 changer transitions 2/712 dead transitions. [2025-01-09 16:40:47,952 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 712 transitions, 14334 flow [2025-01-09 16:40:47,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-01-09 16:40:47,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-01-09 16:40:47,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 124 transitions. [2025-01-09 16:40:47,953 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.62 [2025-01-09 16:40:47,953 INFO L175 Difference]: Start difference. First operand has 208 places, 605 transitions, 11391 flow. Second operand 8 states and 124 transitions. [2025-01-09 16:40:47,953 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 712 transitions, 14334 flow [2025-01-09 16:40:49,133 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 712 transitions, 14241 flow, removed 32 selfloop flow, removed 2 redundant places. [2025-01-09 16:40:49,142 INFO L231 Difference]: Finished difference. Result has 214 places, 612 transitions, 12301 flow [2025-01-09 16:40:49,142 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=11219, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=599, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=219, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=376, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=12301, PETRI_PLACES=214, PETRI_TRANSITIONS=612} [2025-01-09 16:40:49,142 INFO L279 CegarLoopForPetriNet]: 28 programPoint places, 186 predicate places. [2025-01-09 16:40:49,142 INFO L471 AbstractCegarLoop]: Abstraction has has 214 places, 612 transitions, 12301 flow [2025-01-09 16:40:49,142 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 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 16:40:49,142 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:40:49,143 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 16:40:49,148 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 16:40:49,347 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,13 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:40:49,347 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-01-09 16:40:49,347 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:40:49,347 INFO L85 PathProgramCache]: Analyzing trace with hash -2062673991, now seen corresponding path program 12 times [2025-01-09 16:40:49,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:40:49,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643672660] [2025-01-09 16:40:49,347 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-09 16:40:49,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:40:49,350 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 19 statements into 2 equivalence classes. [2025-01-09 16:40:49,354 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-01-09 16:40:49,354 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2025-01-09 16:40:49,354 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:40:49,439 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 16:40:49,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:40:49,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643672660] [2025-01-09 16:40:49,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1643672660] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 16:40:49,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [18459649] [2025-01-09 16:40:49,439 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-09 16:40:49,439 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:40:49,439 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 16:40:49,446 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 16:40:49,456 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 16:40:49,481 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 19 statements into 2 equivalence classes. [2025-01-09 16:40:49,495 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-01-09 16:40:49,495 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2025-01-09 16:40:49,495 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:40:49,497 INFO L256 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-01-09 16:40:49,497 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 16:40:49,551 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 16:40:49,551 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 16:40:49,617 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 16:40:49,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [18459649] provided 1 perfect and 1 imperfect interpolant sequences [2025-01-09 16:40:49,617 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-01-09 16:40:49,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8, 8] total 13 [2025-01-09 16:40:49,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396044599] [2025-01-09 16:40:49,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 16:40:49,617 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-01-09 16:40:49,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:40:49,617 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-01-09 16:40:49,618 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2025-01-09 16:40:49,618 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 25 [2025-01-09 16:40:49,618 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 612 transitions, 12301 flow. Second operand has 6 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 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 16:40:49,618 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:40:49,618 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 25 [2025-01-09 16:40:49,618 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:40:50,925 INFO L124 PetriNetUnfolderBase]: 5607/8374 cut-off events. [2025-01-09 16:40:50,925 INFO L125 PetriNetUnfolderBase]: For 235322/235322 co-relation queries the response was YES. [2025-01-09 16:40:50,969 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76632 conditions, 8374 events. 5607/8374 cut-off events. For 235322/235322 co-relation queries the response was YES. Maximal size of possible extension queue 546. Compared 47732 event pairs, 1184 based on Foata normal form. 26/8400 useless extension candidates. Maximal degree in co-relation 75972. Up to 4524 conditions per place. [2025-01-09 16:40:51,005 INFO L140 encePairwiseOnDemand]: 18/25 looper letters, 512 selfloop transitions, 160 changer transitions 2/675 dead transitions. [2025-01-09 16:40:51,005 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 675 transitions, 14458 flow [2025-01-09 16:40:51,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-01-09 16:40:51,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-01-09 16:40:51,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 86 transitions. [2025-01-09 16:40:51,006 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5733333333333334 [2025-01-09 16:40:51,006 INFO L175 Difference]: Start difference. First operand has 214 places, 612 transitions, 12301 flow. Second operand 6 states and 86 transitions. [2025-01-09 16:40:51,006 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 675 transitions, 14458 flow [2025-01-09 16:40:52,298 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 675 transitions, 14312 flow, removed 26 selfloop flow, removed 3 redundant places. [2025-01-09 16:40:52,307 INFO L231 Difference]: Finished difference. Result has 216 places, 608 transitions, 12407 flow [2025-01-09 16:40:52,307 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=12087, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=608, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=160, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=448, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=12407, PETRI_PLACES=216, PETRI_TRANSITIONS=608} [2025-01-09 16:40:52,308 INFO L279 CegarLoopForPetriNet]: 28 programPoint places, 188 predicate places. [2025-01-09 16:40:52,308 INFO L471 AbstractCegarLoop]: Abstraction has has 216 places, 608 transitions, 12407 flow [2025-01-09 16:40:52,308 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 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 16:40:52,308 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:40:52,308 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 16:40:52,314 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2025-01-09 16:40:52,508 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2025-01-09 16:40:52,509 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-01-09 16:40:52,509 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:40:52,509 INFO L85 PathProgramCache]: Analyzing trace with hash -1146507889, now seen corresponding path program 2 times [2025-01-09 16:40:52,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:40:52,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777111587] [2025-01-09 16:40:52,509 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 16:40:52,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:40:52,512 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 19 statements into 2 equivalence classes. [2025-01-09 16:40:52,516 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-01-09 16:40:52,517 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 16:40:52,517 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:40:52,650 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 16:40:52,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:40:52,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777111587] [2025-01-09 16:40:52,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [777111587] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 16:40:52,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [657528696] [2025-01-09 16:40:52,650 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 16:40:52,651 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:40:52,651 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 16:40:52,654 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 16:40:52,656 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 16:40:52,681 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 19 statements into 2 equivalence classes. [2025-01-09 16:40:52,700 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-01-09 16:40:52,700 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 16:40:52,700 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:40:52,703 INFO L256 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-01-09 16:40:52,706 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 16:40:52,745 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 16:40:52,745 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-09 16:40:52,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [657528696] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 16:40:52,746 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-01-09 16:40:52,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 9 [2025-01-09 16:40:52,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529895104] [2025-01-09 16:40:52,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 16:40:52,746 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-01-09 16:40:52,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:40:52,747 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-01-09 16:40:52,747 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2025-01-09 16:40:52,747 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 25 [2025-01-09 16:40:52,748 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 608 transitions, 12407 flow. Second operand has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 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 16:40:52,748 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:40:52,748 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 25 [2025-01-09 16:40:52,748 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:40:54,100 INFO L124 PetriNetUnfolderBase]: 5610/8381 cut-off events. [2025-01-09 16:40:54,101 INFO L125 PetriNetUnfolderBase]: For 243842/243842 co-relation queries the response was YES. [2025-01-09 16:40:54,137 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77347 conditions, 8381 events. 5610/8381 cut-off events. For 243842/243842 co-relation queries the response was YES. Maximal size of possible extension queue 549. Compared 47725 event pairs, 1559 based on Foata normal form. 4/8385 useless extension candidates. Maximal degree in co-relation 76681. Up to 5598 conditions per place. [2025-01-09 16:40:54,167 INFO L140 encePairwiseOnDemand]: 16/25 looper letters, 581 selfloop transitions, 91 changer transitions 11/684 dead transitions. [2025-01-09 16:40:54,168 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 684 transitions, 14806 flow [2025-01-09 16:40:54,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-01-09 16:40:54,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-01-09 16:40:54,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 96 transitions. [2025-01-09 16:40:54,169 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5485714285714286 [2025-01-09 16:40:54,169 INFO L175 Difference]: Start difference. First operand has 216 places, 608 transitions, 12407 flow. Second operand 7 states and 96 transitions. [2025-01-09 16:40:54,169 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 684 transitions, 14806 flow [2025-01-09 16:40:55,207 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 684 transitions, 14500 flow, removed 4 selfloop flow, removed 3 redundant places. [2025-01-09 16:40:55,216 INFO L231 Difference]: Finished difference. Result has 222 places, 610 transitions, 12361 flow [2025-01-09 16:40:55,217 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=12101, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=608, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=517, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=12361, PETRI_PLACES=222, PETRI_TRANSITIONS=610} [2025-01-09 16:40:55,217 INFO L279 CegarLoopForPetriNet]: 28 programPoint places, 194 predicate places. [2025-01-09 16:40:55,217 INFO L471 AbstractCegarLoop]: Abstraction has has 222 places, 610 transitions, 12361 flow [2025-01-09 16:40:55,217 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 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 16:40:55,217 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:40:55,217 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 16:40:55,223 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 16:40:55,421 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,SelfDestructingSolverStorable17 [2025-01-09 16:40:55,422 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-01-09 16:40:55,422 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:40:55,422 INFO L85 PathProgramCache]: Analyzing trace with hash -2128986597, now seen corresponding path program 13 times [2025-01-09 16:40:55,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:40:55,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203907097] [2025-01-09 16:40:55,422 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-01-09 16:40:55,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:40:55,429 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-01-09 16:40:55,436 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-01-09 16:40:55,436 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 16:40:55,436 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:40:55,492 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 16:40:55,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:40:55,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203907097] [2025-01-09 16:40:55,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1203907097] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 16:40:55,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [627027046] [2025-01-09 16:40:55,492 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-01-09 16:40:55,492 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:40:55,492 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 16:40:55,498 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 16:40:55,498 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 16:40:55,526 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-01-09 16:40:55,542 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-01-09 16:40:55,542 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 16:40:55,542 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:40:55,543 INFO L256 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-01-09 16:40:55,543 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 16:40:55,600 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 16:40:55,600 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 16:40:55,681 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 16:40:55,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [627027046] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 16:40:55,682 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 16:40:55,682 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2025-01-09 16:40:55,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060592674] [2025-01-09 16:40:55,682 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 16:40:55,682 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-01-09 16:40:55,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:40:55,682 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-01-09 16:40:55,682 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2025-01-09 16:40:55,682 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 25 [2025-01-09 16:40:55,683 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 610 transitions, 12361 flow. Second operand has 15 states, 15 states have (on average 6.066666666666666) internal successors, (91), 15 states have internal predecessors, (91), 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 16:40:55,683 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:40:55,683 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 25 [2025-01-09 16:40:55,683 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:40:57,996 INFO L124 PetriNetUnfolderBase]: 6977/10564 cut-off events. [2025-01-09 16:40:57,996 INFO L125 PetriNetUnfolderBase]: For 299840/299840 co-relation queries the response was YES. [2025-01-09 16:40:58,047 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95994 conditions, 10564 events. 6977/10564 cut-off events. For 299840/299840 co-relation queries the response was YES. Maximal size of possible extension queue 700. Compared 64345 event pairs, 960 based on Foata normal form. 39/10603 useless extension candidates. Maximal degree in co-relation 95141. Up to 3801 conditions per place. [2025-01-09 16:40:58,088 INFO L140 encePairwiseOnDemand]: 16/25 looper letters, 524 selfloop transitions, 587 changer transitions 5/1117 dead transitions. [2025-01-09 16:40:58,088 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 250 places, 1117 transitions, 23658 flow [2025-01-09 16:40:58,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2025-01-09 16:40:58,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2025-01-09 16:40:58,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 354 transitions. [2025-01-09 16:40:58,089 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.472 [2025-01-09 16:40:58,090 INFO L175 Difference]: Start difference. First operand has 222 places, 610 transitions, 12361 flow. Second operand 30 states and 354 transitions. [2025-01-09 16:40:58,090 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 250 places, 1117 transitions, 23658 flow [2025-01-09 16:40:59,747 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 1117 transitions, 23392 flow, removed 24 selfloop flow, removed 4 redundant places. [2025-01-09 16:40:59,761 INFO L231 Difference]: Finished difference. Result has 268 places, 871 transitions, 20137 flow [2025-01-09 16:40:59,762 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=12154, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=610, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=351, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=20137, PETRI_PLACES=268, PETRI_TRANSITIONS=871} [2025-01-09 16:40:59,762 INFO L279 CegarLoopForPetriNet]: 28 programPoint places, 240 predicate places. [2025-01-09 16:40:59,762 INFO L471 AbstractCegarLoop]: Abstraction has has 268 places, 871 transitions, 20137 flow [2025-01-09 16:40:59,762 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.066666666666666) internal successors, (91), 15 states have internal predecessors, (91), 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 16:40:59,762 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:40:59,763 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 16:40:59,768 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 16:40:59,963 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,16 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:40:59,963 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-01-09 16:40:59,964 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:40:59,964 INFO L85 PathProgramCache]: Analyzing trace with hash -1611297000, now seen corresponding path program 4 times [2025-01-09 16:40:59,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:40:59,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717558762] [2025-01-09 16:40:59,964 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-09 16:40:59,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:40:59,969 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 19 statements into 2 equivalence classes. [2025-01-09 16:40:59,973 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 16:40:59,974 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-01-09 16:40:59,974 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:41:00,081 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 16:41:00,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:41:00,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717558762] [2025-01-09 16:41:00,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1717558762] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 16:41:00,082 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 16:41:00,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-01-09 16:41:00,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065814574] [2025-01-09 16:41:00,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 16:41:00,082 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-01-09 16:41:00,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:41:00,082 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-01-09 16:41:00,083 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2025-01-09 16:41:00,083 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 25 [2025-01-09 16:41:00,083 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 268 places, 871 transitions, 20137 flow. Second operand has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 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 16:41:00,083 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:41:00,083 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 25 [2025-01-09 16:41:00,083 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:41:02,159 INFO L124 PetriNetUnfolderBase]: 6950/10546 cut-off events. [2025-01-09 16:41:02,160 INFO L125 PetriNetUnfolderBase]: For 400535/400535 co-relation queries the response was YES. [2025-01-09 16:41:02,221 INFO L83 FinitePrefix]: Finished finitePrefix Result has 108977 conditions, 10546 events. 6950/10546 cut-off events. For 400535/400535 co-relation queries the response was YES. Maximal size of possible extension queue 693. Compared 64451 event pairs, 1925 based on Foata normal form. 21/10567 useless extension candidates. Maximal degree in co-relation 108100. Up to 7192 conditions per place. [2025-01-09 16:41:02,266 INFO L140 encePairwiseOnDemand]: 18/25 looper letters, 798 selfloop transitions, 132 changer transitions 10/941 dead transitions. [2025-01-09 16:41:02,267 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 941 transitions, 23072 flow [2025-01-09 16:41:02,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-01-09 16:41:02,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-01-09 16:41:02,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 88 transitions. [2025-01-09 16:41:02,268 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5866666666666667 [2025-01-09 16:41:02,268 INFO L175 Difference]: Start difference. First operand has 268 places, 871 transitions, 20137 flow. Second operand 6 states and 88 transitions. [2025-01-09 16:41:02,268 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 941 transitions, 23072 flow [2025-01-09 16:41:05,101 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 273 places, 941 transitions, 22014 flow, removed 529 selfloop flow, removed 0 redundant places. [2025-01-09 16:41:05,114 INFO L231 Difference]: Finished difference. Result has 276 places, 871 transitions, 19484 flow [2025-01-09 16:41:05,114 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=19002, PETRI_DIFFERENCE_MINUEND_PLACES=268, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=867, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=127, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=735, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=19484, PETRI_PLACES=276, PETRI_TRANSITIONS=871} [2025-01-09 16:41:05,115 INFO L279 CegarLoopForPetriNet]: 28 programPoint places, 248 predicate places. [2025-01-09 16:41:05,115 INFO L471 AbstractCegarLoop]: Abstraction has has 276 places, 871 transitions, 19484 flow [2025-01-09 16:41:05,115 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 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 16:41:05,115 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:41:05,115 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 16:41:05,115 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2025-01-09 16:41:05,115 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-01-09 16:41:05,116 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:41:05,116 INFO L85 PathProgramCache]: Analyzing trace with hash -2052384829, now seen corresponding path program 3 times [2025-01-09 16:41:05,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:41:05,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [876834651] [2025-01-09 16:41:05,116 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-09 16:41:05,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:41:05,118 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 19 statements into 2 equivalence classes. [2025-01-09 16:41:05,122 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-01-09 16:41:05,122 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-01-09 16:41:05,122 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:41:05,200 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 16:41:05,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:41:05,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [876834651] [2025-01-09 16:41:05,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [876834651] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 16:41:05,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1514228421] [2025-01-09 16:41:05,200 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-09 16:41:05,200 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:41:05,200 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 16:41:05,202 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 16:41:05,203 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 16:41:05,229 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 19 statements into 2 equivalence classes. [2025-01-09 16:41:05,246 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-01-09 16:41:05,246 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-01-09 16:41:05,246 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:41:05,246 INFO L256 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-01-09 16:41:05,247 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 16:41:05,276 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 16:41:05,276 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-09 16:41:05,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1514228421] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 16:41:05,276 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-01-09 16:41:05,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 9 [2025-01-09 16:41:05,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335188718] [2025-01-09 16:41:05,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 16:41:05,277 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-01-09 16:41:05,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:41:05,277 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-01-09 16:41:05,277 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2025-01-09 16:41:05,277 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 25 [2025-01-09 16:41:05,278 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 276 places, 871 transitions, 19484 flow. Second operand has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 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 16:41:05,278 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:41:05,278 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 25 [2025-01-09 16:41:05,278 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:41:07,640 INFO L124 PetriNetUnfolderBase]: 6916/10513 cut-off events. [2025-01-09 16:41:07,641 INFO L125 PetriNetUnfolderBase]: For 389126/389126 co-relation queries the response was YES. [2025-01-09 16:41:07,711 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106610 conditions, 10513 events. 6916/10513 cut-off events. For 389126/389126 co-relation queries the response was YES. Maximal size of possible extension queue 693. Compared 64366 event pairs, 1999 based on Foata normal form. 16/10529 useless extension candidates. Maximal degree in co-relation 105725. Up to 7192 conditions per place. [2025-01-09 16:41:07,771 INFO L140 encePairwiseOnDemand]: 17/25 looper letters, 801 selfloop transitions, 112 changer transitions 15/929 dead transitions. [2025-01-09 16:41:07,771 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 929 transitions, 22064 flow [2025-01-09 16:41:07,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-01-09 16:41:07,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-01-09 16:41:07,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 98 transitions. [2025-01-09 16:41:07,772 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.56 [2025-01-09 16:41:07,772 INFO L175 Difference]: Start difference. First operand has 276 places, 871 transitions, 19484 flow. Second operand 7 states and 98 transitions. [2025-01-09 16:41:07,772 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 929 transitions, 22064 flow [2025-01-09 16:41:10,210 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 279 places, 929 transitions, 21857 flow, removed 19 selfloop flow, removed 3 redundant places. [2025-01-09 16:41:10,223 INFO L231 Difference]: Finished difference. Result has 281 places, 868 transitions, 19453 flow [2025-01-09 16:41:10,223 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=19259, PETRI_DIFFERENCE_MINUEND_PLACES=273, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=870, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=112, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=758, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=19453, PETRI_PLACES=281, PETRI_TRANSITIONS=868} [2025-01-09 16:41:10,224 INFO L279 CegarLoopForPetriNet]: 28 programPoint places, 253 predicate places. [2025-01-09 16:41:10,224 INFO L471 AbstractCegarLoop]: Abstraction has has 281 places, 868 transitions, 19453 flow [2025-01-09 16:41:10,224 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 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 16:41:10,224 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:41:10,224 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 16:41:10,231 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 16:41:10,424 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,17 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:41:10,424 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-01-09 16:41:10,425 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:41:10,425 INFO L85 PathProgramCache]: Analyzing trace with hash 2080580326, now seen corresponding path program 5 times [2025-01-09 16:41:10,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:41:10,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169333147] [2025-01-09 16:41:10,425 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-09 16:41:10,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:41:10,427 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 19 statements into 2 equivalence classes. [2025-01-09 16:41:10,430 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-01-09 16:41:10,430 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 16:41:10,430 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:41:10,518 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 16:41:10,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:41:10,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169333147] [2025-01-09 16:41:10,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1169333147] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 16:41:10,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1580443109] [2025-01-09 16:41:10,518 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-09 16:41:10,518 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:41:10,519 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 16:41:10,520 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 16:41:10,529 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 16:41:10,549 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 19 statements into 2 equivalence classes. [2025-01-09 16:41:10,561 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-01-09 16:41:10,561 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 16:41:10,561 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:41:10,561 INFO L256 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-01-09 16:41:10,562 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 16:41:10,627 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 16:41:10,627 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 16:41:10,761 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 16:41:10,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1580443109] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 16:41:10,762 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 16:41:10,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 18 [2025-01-09 16:41:10,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448880313] [2025-01-09 16:41:10,762 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 16:41:10,762 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-01-09 16:41:10,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:41:10,763 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-01-09 16:41:10,763 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=235, Unknown=0, NotChecked=0, Total=306 [2025-01-09 16:41:10,763 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 25 [2025-01-09 16:41:10,763 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 281 places, 868 transitions, 19453 flow. Second operand has 18 states, 18 states have (on average 5.777777777777778) internal successors, (104), 18 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 16:41:10,763 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:41:10,763 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 25 [2025-01-09 16:41:10,763 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:41:13,525 INFO L124 PetriNetUnfolderBase]: 7022/10682 cut-off events. [2025-01-09 16:41:13,526 INFO L125 PetriNetUnfolderBase]: For 399999/399999 co-relation queries the response was YES. [2025-01-09 16:41:13,590 INFO L83 FinitePrefix]: Finished finitePrefix Result has 108286 conditions, 10682 events. 7022/10682 cut-off events. For 399999/399999 co-relation queries the response was YES. Maximal size of possible extension queue 708. Compared 66001 event pairs, 1306 based on Foata normal form. 39/10721 useless extension candidates. Maximal degree in co-relation 108038. Up to 4248 conditions per place. [2025-01-09 16:41:13,634 INFO L140 encePairwiseOnDemand]: 16/25 looper letters, 903 selfloop transitions, 252 changer transitions 2/1158 dead transitions. [2025-01-09 16:41:13,634 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 298 places, 1158 transitions, 27735 flow [2025-01-09 16:41:13,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2025-01-09 16:41:13,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2025-01-09 16:41:13,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 242 transitions. [2025-01-09 16:41:13,636 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.484 [2025-01-09 16:41:13,636 INFO L175 Difference]: Start difference. First operand has 281 places, 868 transitions, 19453 flow. Second operand 20 states and 242 transitions. [2025-01-09 16:41:13,636 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 298 places, 1158 transitions, 27735 flow [2025-01-09 16:41:16,104 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 292 places, 1158 transitions, 27495 flow, removed 5 selfloop flow, removed 6 redundant places. [2025-01-09 16:41:16,118 INFO L231 Difference]: Finished difference. Result has 304 places, 907 transitions, 20756 flow [2025-01-09 16:41:16,119 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=19219, PETRI_DIFFERENCE_MINUEND_PLACES=273, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=868, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=218, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=631, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=20756, PETRI_PLACES=304, PETRI_TRANSITIONS=907} [2025-01-09 16:41:16,119 INFO L279 CegarLoopForPetriNet]: 28 programPoint places, 276 predicate places. [2025-01-09 16:41:16,119 INFO L471 AbstractCegarLoop]: Abstraction has has 304 places, 907 transitions, 20756 flow [2025-01-09 16:41:16,119 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.777777777777778) internal successors, (104), 18 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 16:41:16,119 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:41:16,119 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 16:41:16,125 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 16:41:16,320 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,18 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:41:16,320 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-01-09 16:41:16,321 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:41:16,321 INFO L85 PathProgramCache]: Analyzing trace with hash -1594603794, now seen corresponding path program 6 times [2025-01-09 16:41:16,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:41:16,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276904028] [2025-01-09 16:41:16,321 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-09 16:41:16,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:41:16,323 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 19 statements into 2 equivalence classes. [2025-01-09 16:41:16,327 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-01-09 16:41:16,327 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2025-01-09 16:41:16,327 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:41:16,466 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 16:41:16,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:41:16,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276904028] [2025-01-09 16:41:16,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1276904028] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 16:41:16,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2109695032] [2025-01-09 16:41:16,466 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-09 16:41:16,466 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:41:16,466 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 16:41:16,468 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 16:41:16,470 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 16:41:16,493 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 19 statements into 2 equivalence classes. [2025-01-09 16:41:16,514 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-01-09 16:41:16,514 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2025-01-09 16:41:16,514 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:41:16,515 INFO L256 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-01-09 16:41:16,515 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 16:41:16,556 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 16:41:16,556 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 16:41:16,697 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 16:41:16,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2109695032] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 16:41:16,697 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 16:41:16,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 8] total 15 [2025-01-09 16:41:16,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204574745] [2025-01-09 16:41:16,697 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 16:41:16,697 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-01-09 16:41:16,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:41:16,698 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-01-09 16:41:16,698 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2025-01-09 16:41:16,698 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 25 [2025-01-09 16:41:16,698 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 304 places, 907 transitions, 20756 flow. Second operand has 15 states, 15 states have (on average 6.0) internal successors, (90), 15 states have internal predecessors, (90), 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 16:41:16,698 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:41:16,698 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 25 [2025-01-09 16:41:16,698 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:41:19,563 INFO L124 PetriNetUnfolderBase]: 7042/10715 cut-off events. [2025-01-09 16:41:19,563 INFO L125 PetriNetUnfolderBase]: For 437577/437577 co-relation queries the response was YES. [2025-01-09 16:41:19,640 INFO L83 FinitePrefix]: Finished finitePrefix Result has 113149 conditions, 10715 events. 7042/10715 cut-off events. For 437577/437577 co-relation queries the response was YES. Maximal size of possible extension queue 710. Compared 66253 event pairs, 1293 based on Foata normal form. 20/10735 useless extension candidates. Maximal degree in co-relation 112943. Up to 4248 conditions per place. [2025-01-09 16:41:19,694 INFO L140 encePairwiseOnDemand]: 16/25 looper letters, 919 selfloop transitions, 248 changer transitions 2/1170 dead transitions. [2025-01-09 16:41:19,695 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 321 places, 1170 transitions, 28565 flow [2025-01-09 16:41:19,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2025-01-09 16:41:19,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2025-01-09 16:41:19,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 226 transitions. [2025-01-09 16:41:19,697 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5022222222222222 [2025-01-09 16:41:19,697 INFO L175 Difference]: Start difference. First operand has 304 places, 907 transitions, 20756 flow. Second operand 18 states and 226 transitions. [2025-01-09 16:41:19,697 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 321 places, 1170 transitions, 28565 flow [2025-01-09 16:41:22,493 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 311 places, 1170 transitions, 28137 flow, removed 74 selfloop flow, removed 10 redundant places. [2025-01-09 16:41:22,508 INFO L231 Difference]: Finished difference. Result has 321 places, 933 transitions, 21606 flow [2025-01-09 16:41:22,509 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=20260, PETRI_DIFFERENCE_MINUEND_PLACES=294, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=904, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=220, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=658, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=21606, PETRI_PLACES=321, PETRI_TRANSITIONS=933} [2025-01-09 16:41:22,509 INFO L279 CegarLoopForPetriNet]: 28 programPoint places, 293 predicate places. [2025-01-09 16:41:22,510 INFO L471 AbstractCegarLoop]: Abstraction has has 321 places, 933 transitions, 21606 flow [2025-01-09 16:41:22,510 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.0) internal successors, (90), 15 states have internal predecessors, (90), 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 16:41:22,510 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:41:22,510 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 16:41:22,517 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2025-01-09 16:41:22,711 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,19 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:41:22,711 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-01-09 16:41:22,712 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:41:22,712 INFO L85 PathProgramCache]: Analyzing trace with hash -974070371, now seen corresponding path program 14 times [2025-01-09 16:41:22,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:41:22,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658385646] [2025-01-09 16:41:22,712 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 16:41:22,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:41:22,715 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 19 statements into 2 equivalence classes. [2025-01-09 16:41:22,719 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-01-09 16:41:22,719 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 16:41:22,719 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:41:22,799 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 16:41:22,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:41:22,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658385646] [2025-01-09 16:41:22,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [658385646] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 16:41:22,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2123331894] [2025-01-09 16:41:22,799 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 16:41:22,799 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:41:22,799 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 16:41:22,801 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 16:41:22,803 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 16:41:22,831 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 19 statements into 2 equivalence classes. [2025-01-09 16:41:22,852 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-01-09 16:41:22,853 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 16:41:22,853 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:41:22,854 INFO L256 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-01-09 16:41:22,854 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 16:41:22,954 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 16:41:22,954 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 16:41:23,227 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 16:41:23,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2123331894] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 16:41:23,227 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 16:41:23,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 15 [2025-01-09 16:41:23,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296926365] [2025-01-09 16:41:23,228 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 16:41:23,228 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-01-09 16:41:23,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:41:23,228 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-01-09 16:41:23,229 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2025-01-09 16:41:23,229 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 25 [2025-01-09 16:41:23,229 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 321 places, 933 transitions, 21606 flow. Second operand has 15 states, 15 states have (on average 6.0) internal successors, (90), 15 states have internal predecessors, (90), 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 16:41:23,229 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:41:23,229 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 25 [2025-01-09 16:41:23,229 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:41:27,821 INFO L124 PetriNetUnfolderBase]: 10012/15322 cut-off events. [2025-01-09 16:41:27,822 INFO L125 PetriNetUnfolderBase]: For 696557/696557 co-relation queries the response was YES. [2025-01-09 16:41:27,932 INFO L83 FinitePrefix]: Finished finitePrefix Result has 167593 conditions, 15322 events. 10012/15322 cut-off events. For 696557/696557 co-relation queries the response was YES. Maximal size of possible extension queue 1039. Compared 101246 event pairs, 1434 based on Foata normal form. 46/15368 useless extension candidates. Maximal degree in co-relation 166788. Up to 5993 conditions per place. [2025-01-09 16:41:28,010 INFO L140 encePairwiseOnDemand]: 16/25 looper letters, 797 selfloop transitions, 935 changer transitions 1/1734 dead transitions. [2025-01-09 16:41:28,011 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 345 places, 1734 transitions, 43490 flow [2025-01-09 16:41:28,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2025-01-09 16:41:28,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2025-01-09 16:41:28,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 331 transitions. [2025-01-09 16:41:28,012 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5296 [2025-01-09 16:41:28,012 INFO L175 Difference]: Start difference. First operand has 321 places, 933 transitions, 21606 flow. Second operand 25 states and 331 transitions. [2025-01-09 16:41:28,012 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 345 places, 1734 transitions, 43490 flow [2025-01-09 16:41:33,359 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 340 places, 1734 transitions, 42931 flow, removed 71 selfloop flow, removed 5 redundant places. [2025-01-09 16:41:33,387 INFO L231 Difference]: Finished difference. Result has 356 places, 1413 transitions, 38005 flow [2025-01-09 16:41:33,388 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=21193, PETRI_DIFFERENCE_MINUEND_PLACES=316, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=932, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=572, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=283, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=38005, PETRI_PLACES=356, PETRI_TRANSITIONS=1413} [2025-01-09 16:41:33,389 INFO L279 CegarLoopForPetriNet]: 28 programPoint places, 328 predicate places. [2025-01-09 16:41:33,389 INFO L471 AbstractCegarLoop]: Abstraction has has 356 places, 1413 transitions, 38005 flow [2025-01-09 16:41:33,389 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.0) internal successors, (90), 15 states have internal predecessors, (90), 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 16:41:33,389 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:41:33,389 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 16:41:33,395 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 16:41:33,594 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,20 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:41:33,594 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-01-09 16:41:33,594 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:41:33,594 INFO L85 PathProgramCache]: Analyzing trace with hash 1567198077, now seen corresponding path program 15 times [2025-01-09 16:41:33,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:41:33,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430776630] [2025-01-09 16:41:33,595 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-09 16:41:33,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:41:33,598 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 19 statements into 2 equivalence classes. [2025-01-09 16:41:33,602 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-01-09 16:41:33,603 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-01-09 16:41:33,603 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:41:33,710 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 16:41:33,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:41:33,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430776630] [2025-01-09 16:41:33,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1430776630] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 16:41:33,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1612689718] [2025-01-09 16:41:33,711 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-09 16:41:33,711 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:41:33,711 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 16:41:33,713 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 16:41:33,714 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 16:41:33,739 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 19 statements into 2 equivalence classes. [2025-01-09 16:41:33,763 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-01-09 16:41:33,763 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-01-09 16:41:33,763 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:41:33,766 INFO L256 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-01-09 16:41:33,767 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 16:41:33,799 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 16:41:33,800 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-09 16:41:33,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1612689718] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 16:41:33,800 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-01-09 16:41:33,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 9 [2025-01-09 16:41:33,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875512467] [2025-01-09 16:41:33,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 16:41:33,800 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-01-09 16:41:33,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:41:33,802 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-01-09 16:41:33,802 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2025-01-09 16:41:33,802 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 25 [2025-01-09 16:41:33,802 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 356 places, 1413 transitions, 38005 flow. Second operand has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 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 16:41:33,802 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:41:33,802 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 25 [2025-01-09 16:41:33,802 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:41:39,424 INFO L124 PetriNetUnfolderBase]: 10035/15355 cut-off events. [2025-01-09 16:41:39,425 INFO L125 PetriNetUnfolderBase]: For 818870/818870 co-relation queries the response was YES. [2025-01-09 16:41:39,567 INFO L83 FinitePrefix]: Finished finitePrefix Result has 182211 conditions, 15355 events. 10035/15355 cut-off events. For 818870/818870 co-relation queries the response was YES. Maximal size of possible extension queue 1042. Compared 101197 event pairs, 2879 based on Foata normal form. 2/15357 useless extension candidates. Maximal degree in co-relation 181406. Up to 14446 conditions per place. [2025-01-09 16:41:39,644 INFO L140 encePairwiseOnDemand]: 16/25 looper letters, 1323 selfloop transitions, 134 changer transitions 3/1461 dead transitions. [2025-01-09 16:41:39,645 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 362 places, 1461 transitions, 41847 flow [2025-01-09 16:41:39,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-01-09 16:41:39,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-01-09 16:41:39,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 82 transitions. [2025-01-09 16:41:39,645 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4685714285714286 [2025-01-09 16:41:39,645 INFO L175 Difference]: Start difference. First operand has 356 places, 1413 transitions, 38005 flow. Second operand 7 states and 82 transitions. [2025-01-09 16:41:39,646 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 362 places, 1461 transitions, 41847 flow [2025-01-09 16:41:47,211 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 357 places, 1461 transitions, 39053 flow, removed 1058 selfloop flow, removed 5 redundant places. [2025-01-09 16:41:47,234 INFO L231 Difference]: Finished difference. Result has 359 places, 1421 transitions, 35719 flow [2025-01-09 16:41:47,235 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=35239, PETRI_DIFFERENCE_MINUEND_PLACES=351, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1413, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=126, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1285, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=35719, PETRI_PLACES=359, PETRI_TRANSITIONS=1421} [2025-01-09 16:41:47,236 INFO L279 CegarLoopForPetriNet]: 28 programPoint places, 331 predicate places. [2025-01-09 16:41:47,236 INFO L471 AbstractCegarLoop]: Abstraction has has 359 places, 1421 transitions, 35719 flow [2025-01-09 16:41:47,237 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 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 16:41:47,237 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:41:47,237 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 16:41:47,243 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 16:41:47,441 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,21 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:41:47,441 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-01-09 16:41:47,441 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:41:47,442 INFO L85 PathProgramCache]: Analyzing trace with hash 952184657, now seen corresponding path program 16 times [2025-01-09 16:41:47,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:41:47,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343577306] [2025-01-09 16:41:47,442 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-09 16:41:47,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:41:47,449 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 19 statements into 2 equivalence classes. [2025-01-09 16:41:47,452 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 16:41:47,453 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-01-09 16:41:47,453 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:41:47,527 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 16:41:47,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:41:47,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343577306] [2025-01-09 16:41:47,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [343577306] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 16:41:47,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [693853429] [2025-01-09 16:41:47,528 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-09 16:41:47,528 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:41:47,528 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 16:41:47,532 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 16:41:47,534 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 16:41:47,562 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 19 statements into 2 equivalence classes. [2025-01-09 16:41:47,582 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 16:41:47,582 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-01-09 16:41:47,582 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:41:47,583 INFO L256 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-01-09 16:41:47,586 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 16:41:47,669 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 16:41:47,669 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 16:41:47,939 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 16:41:47,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [693853429] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 16:41:47,940 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 16:41:47,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 7] total 14 [2025-01-09 16:41:47,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467156174] [2025-01-09 16:41:47,940 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 16:41:47,940 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-01-09 16:41:47,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:41:47,941 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-01-09 16:41:47,941 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2025-01-09 16:41:47,941 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 25 [2025-01-09 16:41:47,941 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 359 places, 1421 transitions, 35719 flow. Second operand has 14 states, 14 states have (on average 6.357142857142857) internal successors, (89), 14 states have internal predecessors, (89), 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 16:41:47,941 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:41:47,941 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 25 [2025-01-09 16:41:47,941 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:41:54,260 INFO L124 PetriNetUnfolderBase]: 10716/16717 cut-off events. [2025-01-09 16:41:54,260 INFO L125 PetriNetUnfolderBase]: For 733833/733833 co-relation queries the response was YES. [2025-01-09 16:41:54,397 INFO L83 FinitePrefix]: Finished finitePrefix Result has 184318 conditions, 16717 events. 10716/16717 cut-off events. For 733833/733833 co-relation queries the response was YES. Maximal size of possible extension queue 1185. Compared 115683 event pairs, 2045 based on Foata normal form. 38/16755 useless extension candidates. Maximal degree in co-relation 183488. Up to 8147 conditions per place. [2025-01-09 16:41:54,474 INFO L140 encePairwiseOnDemand]: 16/25 looper letters, 905 selfloop transitions, 908 changer transitions 2/1816 dead transitions. [2025-01-09 16:41:54,474 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 383 places, 1816 transitions, 47064 flow [2025-01-09 16:41:54,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2025-01-09 16:41:54,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2025-01-09 16:41:54,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 333 transitions. [2025-01-09 16:41:54,475 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5123076923076924 [2025-01-09 16:41:54,475 INFO L175 Difference]: Start difference. First operand has 359 places, 1421 transitions, 35719 flow. Second operand 26 states and 333 transitions. [2025-01-09 16:41:54,475 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 383 places, 1816 transitions, 47064 flow