./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/chl-word-symm.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 735b3cc8 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/chl-word-symm.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash bf81f7b3bd1ceac2bf46c7c37f69effc0af9de17b18c7565156301fb49a6164e --- Real Ultimate output --- This is Ultimate 0.3.0-?-735b3cc-m [2025-03-14 01:02:33,137 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-14 01:02:33,194 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-14 01:02:33,199 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-14 01:02:33,200 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-14 01:02:33,222 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-14 01:02:33,223 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-14 01:02:33,223 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-14 01:02:33,223 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-14 01:02:33,223 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-14 01:02:33,223 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-14 01:02:33,223 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-14 01:02:33,224 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-14 01:02:33,224 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-14 01:02:33,224 INFO L153 SettingsManager]: * Use SBE=true [2025-03-14 01:02:33,224 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-14 01:02:33,224 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-14 01:02:33,224 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-14 01:02:33,224 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-14 01:02:33,224 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-14 01:02:33,224 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-14 01:02:33,225 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-14 01:02:33,225 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-14 01:02:33,225 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-14 01:02:33,225 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-14 01:02:33,225 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-14 01:02:33,225 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-14 01:02:33,225 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-14 01:02:33,225 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-14 01:02:33,225 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-14 01:02:33,225 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-14 01:02:33,225 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-14 01:02:33,225 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-14 01:02:33,226 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-14 01:02:33,226 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-14 01:02:33,226 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-14 01:02:33,226 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-14 01:02:33,226 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-14 01:02:33,226 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-14 01:02:33,226 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-14 01:02:33,226 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-14 01:02:33,226 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-14 01:02:33,226 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-14 01:02:33,226 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bf81f7b3bd1ceac2bf46c7c37f69effc0af9de17b18c7565156301fb49a6164e [2025-03-14 01:02:33,451 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-14 01:02:33,457 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-14 01:02:33,460 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-14 01:02:33,461 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-14 01:02:33,461 INFO L274 PluginConnector]: CDTParser initialized [2025-03-14 01:02:33,462 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/chl-word-symm.wvr.c [2025-03-14 01:02:34,587 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/85e0eab64/9e5b79316fbc4dfe9612d6ec481fbfea/FLAG53d0e68d4 [2025-03-14 01:02:34,845 INFO L384 CDTParser]: Found 1 translation units. [2025-03-14 01:02:34,846 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-word-symm.wvr.c [2025-03-14 01:02:34,861 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/85e0eab64/9e5b79316fbc4dfe9612d6ec481fbfea/FLAG53d0e68d4 [2025-03-14 01:02:34,879 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/85e0eab64/9e5b79316fbc4dfe9612d6ec481fbfea [2025-03-14 01:02:34,886 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-14 01:02:34,888 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-14 01:02:34,889 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-14 01:02:34,889 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-14 01:02:34,893 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-14 01:02:34,894 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.03 01:02:34" (1/1) ... [2025-03-14 01:02:34,896 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55bee783 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 01:02:34, skipping insertion in model container [2025-03-14 01:02:34,896 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.03 01:02:34" (1/1) ... [2025-03-14 01:02:34,912 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-14 01:02:35,069 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-word-symm.wvr.c[2874,2887] [2025-03-14 01:02:35,083 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-14 01:02:35,095 INFO L200 MainTranslator]: Completed pre-run [2025-03-14 01:02:35,113 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-word-symm.wvr.c[2874,2887] [2025-03-14 01:02:35,119 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-14 01:02:35,131 INFO L204 MainTranslator]: Completed translation [2025-03-14 01:02:35,132 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 01:02:35 WrapperNode [2025-03-14 01:02:35,132 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-14 01:02:35,133 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-14 01:02:35,133 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-14 01:02:35,133 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-14 01:02:35,138 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 01:02:35" (1/1) ... [2025-03-14 01:02:35,146 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 01:02:35" (1/1) ... [2025-03-14 01:02:35,166 INFO L138 Inliner]: procedures = 23, calls = 25, calls flagged for inlining = 9, calls inlined = 11, statements flattened = 117 [2025-03-14 01:02:35,167 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-14 01:02:35,167 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-14 01:02:35,167 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-14 01:02:35,167 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-14 01:02:35,174 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 01:02:35" (1/1) ... [2025-03-14 01:02:35,175 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 01:02:35" (1/1) ... [2025-03-14 01:02:35,177 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 01:02:35" (1/1) ... [2025-03-14 01:02:35,190 INFO L175 MemorySlicer]: Split 12 memory accesses to 2 slices as follows [2, 10]. 83 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 2 writes are split as follows [0, 2]. [2025-03-14 01:02:35,190 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 01:02:35" (1/1) ... [2025-03-14 01:02:35,190 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 01:02:35" (1/1) ... [2025-03-14 01:02:35,198 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 01:02:35" (1/1) ... [2025-03-14 01:02:35,199 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 01:02:35" (1/1) ... [2025-03-14 01:02:35,203 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 01:02:35" (1/1) ... [2025-03-14 01:02:35,204 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 01:02:35" (1/1) ... [2025-03-14 01:02:35,205 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-14 01:02:35,206 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-14 01:02:35,206 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-14 01:02:35,206 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-14 01:02:35,209 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 01:02:35" (1/1) ... [2025-03-14 01:02:35,215 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-14 01:02:35,227 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-14 01:02:35,249 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-14 01:02:35,252 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-14 01:02:35,271 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-14 01:02:35,271 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-03-14 01:02:35,271 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-03-14 01:02:35,271 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-03-14 01:02:35,271 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-03-14 01:02:35,271 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-14 01:02:35,271 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-14 01:02:35,272 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-03-14 01:02:35,272 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-03-14 01:02:35,272 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-03-14 01:02:35,272 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-14 01:02:35,272 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-14 01:02:35,272 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-03-14 01:02:35,272 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-03-14 01:02:35,273 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-03-14 01:02:35,354 INFO L256 CfgBuilder]: Building ICFG [2025-03-14 01:02:35,356 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-14 01:02:35,670 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-14 01:02:35,671 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-14 01:02:35,671 INFO L318 CfgBuilder]: Performing block encoding [2025-03-14 01:02:35,957 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-14 01:02:35,958 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 14.03 01:02:35 BoogieIcfgContainer [2025-03-14 01:02:35,958 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-14 01:02:35,959 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-14 01:02:35,960 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-14 01:02:35,963 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-14 01:02:35,963 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.03 01:02:34" (1/3) ... [2025-03-14 01:02:35,964 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e63b681 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.03 01:02:35, skipping insertion in model container [2025-03-14 01:02:35,964 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 01:02:35" (2/3) ... [2025-03-14 01:02:35,964 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e63b681 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.03 01:02:35, skipping insertion in model container [2025-03-14 01:02:35,964 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 14.03 01:02:35" (3/3) ... [2025-03-14 01:02:35,965 INFO L128 eAbstractionObserver]: Analyzing ICFG chl-word-symm.wvr.c [2025-03-14 01:02:35,975 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-14 01:02:35,978 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG chl-word-symm.wvr.c that has 3 procedures, 27 locations, 1 initial locations, 4 loop locations, and 1 error locations. [2025-03-14 01:02:35,978 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-14 01:02:36,018 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2025-03-14 01:02:36,045 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 33 places, 34 transitions, 82 flow [2025-03-14 01:02:36,068 INFO L124 PetriNetUnfolderBase]: 8/32 cut-off events. [2025-03-14 01:02:36,071 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-03-14 01:02:36,074 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41 conditions, 32 events. 8/32 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 43 event pairs, 0 based on Foata normal form. 0/23 useless extension candidates. Maximal degree in co-relation 23. Up to 2 conditions per place. [2025-03-14 01:02:36,074 INFO L82 GeneralOperation]: Start removeDead. Operand has 33 places, 34 transitions, 82 flow [2025-03-14 01:02:36,076 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 30 places, 31 transitions, 74 flow [2025-03-14 01:02:36,080 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-14 01:02:36,089 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;@711c83a4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-14 01:02:36,090 INFO L334 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2025-03-14 01:02:36,098 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-14 01:02:36,100 INFO L124 PetriNetUnfolderBase]: 8/30 cut-off events. [2025-03-14 01:02:36,100 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-03-14 01:02:36,100 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:02:36,101 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:02:36,101 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-14 01:02:36,106 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:02:36,106 INFO L85 PathProgramCache]: Analyzing trace with hash 2081270935, now seen corresponding path program 1 times [2025-03-14 01:02:36,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:02:36,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553760289] [2025-03-14 01:02:36,112 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-14 01:02:36,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:02:36,173 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-03-14 01:02:36,214 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-03-14 01:02:36,215 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-14 01:02:36,215 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:02:36,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-14 01:02:36,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:02:36,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553760289] [2025-03-14 01:02:36,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1553760289] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-14 01:02:36,677 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-14 01:02:36,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-14 01:02:36,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746503536] [2025-03-14 01:02:36,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 01:02:36,683 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-14 01:02:36,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:02:36,700 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-14 01:02:36,700 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-14 01:02:36,702 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 34 [2025-03-14 01:02:36,703 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 31 transitions, 74 flow. Second operand has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:02:36,703 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:02:36,704 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 34 [2025-03-14 01:02:36,704 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:02:36,937 INFO L124 PetriNetUnfolderBase]: 244/413 cut-off events. [2025-03-14 01:02:36,938 INFO L125 PetriNetUnfolderBase]: For 30/30 co-relation queries the response was YES. [2025-03-14 01:02:36,941 INFO L83 FinitePrefix]: Finished finitePrefix Result has 840 conditions, 413 events. 244/413 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1457 event pairs, 115 based on Foata normal form. 1/346 useless extension candidates. Maximal degree in co-relation 755. Up to 301 conditions per place. [2025-03-14 01:02:36,946 INFO L140 encePairwiseOnDemand]: 30/34 looper letters, 37 selfloop transitions, 1 changer transitions 7/48 dead transitions. [2025-03-14 01:02:36,946 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 48 transitions, 210 flow [2025-03-14 01:02:36,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-14 01:02:36,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-14 01:02:36,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 67 transitions. [2025-03-14 01:02:36,963 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.49264705882352944 [2025-03-14 01:02:36,964 INFO L175 Difference]: Start difference. First operand has 30 places, 31 transitions, 74 flow. Second operand 4 states and 67 transitions. [2025-03-14 01:02:36,965 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 48 transitions, 210 flow [2025-03-14 01:02:36,971 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 48 transitions, 194 flow, removed 0 selfloop flow, removed 4 redundant places. [2025-03-14 01:02:36,975 INFO L231 Difference]: Finished difference. Result has 31 places, 31 transitions, 75 flow [2025-03-14 01:02:36,977 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=75, PETRI_PLACES=31, PETRI_TRANSITIONS=31} [2025-03-14 01:02:36,982 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 1 predicate places. [2025-03-14 01:02:36,982 INFO L471 AbstractCegarLoop]: Abstraction has has 31 places, 31 transitions, 75 flow [2025-03-14 01:02:36,983 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:02:36,983 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:02:36,983 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:02:36,983 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-14 01:02:36,983 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-14 01:02:36,984 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:02:36,984 INFO L85 PathProgramCache]: Analyzing trace with hash -1103715989, now seen corresponding path program 2 times [2025-03-14 01:02:36,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:02:36,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928661027] [2025-03-14 01:02:36,985 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-14 01:02:36,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:02:36,998 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 17 statements into 1 equivalence classes. [2025-03-14 01:02:37,010 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-03-14 01:02:37,010 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-14 01:02:37,011 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:02:37,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-14 01:02:37,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:02:37,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928661027] [2025-03-14 01:02:37,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1928661027] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-14 01:02:37,196 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-14 01:02:37,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-14 01:02:37,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120437893] [2025-03-14 01:02:37,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 01:02:37,199 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-14 01:02:37,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:02:37,199 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-14 01:02:37,200 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-14 01:02:37,200 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 34 [2025-03-14 01:02:37,200 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 31 transitions, 75 flow. Second operand has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:02:37,200 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:02:37,200 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 34 [2025-03-14 01:02:37,200 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:02:37,440 INFO L124 PetriNetUnfolderBase]: 284/495 cut-off events. [2025-03-14 01:02:37,440 INFO L125 PetriNetUnfolderBase]: For 56/56 co-relation queries the response was YES. [2025-03-14 01:02:37,442 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1039 conditions, 495 events. 284/495 cut-off events. For 56/56 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 1969 event pairs, 156 based on Foata normal form. 6/443 useless extension candidates. Maximal degree in co-relation 1022. Up to 367 conditions per place. [2025-03-14 01:02:37,444 INFO L140 encePairwiseOnDemand]: 30/34 looper letters, 37 selfloop transitions, 1 changer transitions 9/50 dead transitions. [2025-03-14 01:02:37,446 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 50 transitions, 217 flow [2025-03-14 01:02:37,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-14 01:02:37,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-14 01:02:37,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 69 transitions. [2025-03-14 01:02:37,449 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5073529411764706 [2025-03-14 01:02:37,449 INFO L175 Difference]: Start difference. First operand has 31 places, 31 transitions, 75 flow. Second operand 4 states and 69 transitions. [2025-03-14 01:02:37,449 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 50 transitions, 217 flow [2025-03-14 01:02:37,450 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 50 transitions, 211 flow, removed 2 selfloop flow, removed 2 redundant places. [2025-03-14 01:02:37,451 INFO L231 Difference]: Finished difference. Result has 33 places, 31 transitions, 81 flow [2025-03-14 01:02:37,452 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=81, PETRI_PLACES=33, PETRI_TRANSITIONS=31} [2025-03-14 01:02:37,452 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 3 predicate places. [2025-03-14 01:02:37,452 INFO L471 AbstractCegarLoop]: Abstraction has has 33 places, 31 transitions, 81 flow [2025-03-14 01:02:37,452 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:02:37,453 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:02:37,453 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:02:37,453 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-14 01:02:37,453 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-14 01:02:37,453 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:02:37,454 INFO L85 PathProgramCache]: Analyzing trace with hash 1510863721, now seen corresponding path program 1 times [2025-03-14 01:02:37,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:02:37,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176457910] [2025-03-14 01:02:37,454 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-14 01:02:37,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:02:37,462 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-03-14 01:02:37,467 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-03-14 01:02:37,467 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-14 01:02:37,467 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:02:37,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-14 01:02:37,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:02:37,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176457910] [2025-03-14 01:02:37,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1176457910] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-14 01:02:37,497 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-14 01:02:37,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-14 01:02:37,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105660501] [2025-03-14 01:02:37,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 01:02:37,498 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-14 01:02:37,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:02:37,498 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-14 01:02:37,498 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-14 01:02:37,498 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 34 [2025-03-14 01:02:37,498 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 31 transitions, 81 flow. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:02:37,498 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:02:37,498 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 34 [2025-03-14 01:02:37,498 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:02:37,587 INFO L124 PetriNetUnfolderBase]: 194/341 cut-off events. [2025-03-14 01:02:37,587 INFO L125 PetriNetUnfolderBase]: For 124/124 co-relation queries the response was YES. [2025-03-14 01:02:37,588 INFO L83 FinitePrefix]: Finished finitePrefix Result has 726 conditions, 341 events. 194/341 cut-off events. For 124/124 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1182 event pairs, 62 based on Foata normal form. 17/325 useless extension candidates. Maximal degree in co-relation 716. Up to 255 conditions per place. [2025-03-14 01:02:37,589 INFO L140 encePairwiseOnDemand]: 30/34 looper letters, 31 selfloop transitions, 2 changer transitions 5/41 dead transitions. [2025-03-14 01:02:37,589 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 41 transitions, 183 flow [2025-03-14 01:02:37,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-14 01:02:37,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-14 01:02:37,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 55 transitions. [2025-03-14 01:02:37,590 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5392156862745098 [2025-03-14 01:02:37,591 INFO L175 Difference]: Start difference. First operand has 33 places, 31 transitions, 81 flow. Second operand 3 states and 55 transitions. [2025-03-14 01:02:37,591 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 41 transitions, 183 flow [2025-03-14 01:02:37,591 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 41 transitions, 180 flow, removed 1 selfloop flow, removed 2 redundant places. [2025-03-14 01:02:37,592 INFO L231 Difference]: Finished difference. Result has 33 places, 31 transitions, 84 flow [2025-03-14 01:02:37,592 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=84, PETRI_PLACES=33, PETRI_TRANSITIONS=31} [2025-03-14 01:02:37,593 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 3 predicate places. [2025-03-14 01:02:37,593 INFO L471 AbstractCegarLoop]: Abstraction has has 33 places, 31 transitions, 84 flow [2025-03-14 01:02:37,593 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:02:37,593 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:02:37,593 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:02:37,593 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-14 01:02:37,593 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-14 01:02:37,594 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:02:37,594 INFO L85 PathProgramCache]: Analyzing trace with hash 1198863773, now seen corresponding path program 1 times [2025-03-14 01:02:37,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:02:37,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814147454] [2025-03-14 01:02:37,594 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-14 01:02:37,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:02:37,600 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-03-14 01:02:37,610 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-03-14 01:02:37,612 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-14 01:02:37,612 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:02:38,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-14 01:02:38,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:02:38,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814147454] [2025-03-14 01:02:38,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1814147454] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-14 01:02:38,008 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-14 01:02:38,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-14 01:02:38,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460764755] [2025-03-14 01:02:38,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 01:02:38,008 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-14 01:02:38,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:02:38,008 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-14 01:02:38,009 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2025-03-14 01:02:38,036 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 34 [2025-03-14 01:02:38,036 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 31 transitions, 84 flow. Second operand has 8 states, 8 states have (on average 7.25) internal successors, (58), 8 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:02:38,036 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:02:38,036 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 34 [2025-03-14 01:02:38,036 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:02:38,316 INFO L124 PetriNetUnfolderBase]: 416/713 cut-off events. [2025-03-14 01:02:38,316 INFO L125 PetriNetUnfolderBase]: For 154/154 co-relation queries the response was YES. [2025-03-14 01:02:38,317 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1570 conditions, 713 events. 416/713 cut-off events. For 154/154 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2994 event pairs, 74 based on Foata normal form. 1/645 useless extension candidates. Maximal degree in co-relation 499. Up to 245 conditions per place. [2025-03-14 01:02:38,320 INFO L140 encePairwiseOnDemand]: 23/34 looper letters, 79 selfloop transitions, 14 changer transitions 1/97 dead transitions. [2025-03-14 01:02:38,320 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 97 transitions, 448 flow [2025-03-14 01:02:38,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-14 01:02:38,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-03-14 01:02:38,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 131 transitions. [2025-03-14 01:02:38,321 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.48161764705882354 [2025-03-14 01:02:38,321 INFO L175 Difference]: Start difference. First operand has 33 places, 31 transitions, 84 flow. Second operand 8 states and 131 transitions. [2025-03-14 01:02:38,321 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 97 transitions, 448 flow [2025-03-14 01:02:38,327 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 97 transitions, 424 flow, removed 12 selfloop flow, removed 2 redundant places. [2025-03-14 01:02:38,328 INFO L231 Difference]: Finished difference. Result has 41 places, 44 transitions, 168 flow [2025-03-14 01:02:38,328 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=168, PETRI_PLACES=41, PETRI_TRANSITIONS=44} [2025-03-14 01:02:38,329 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 11 predicate places. [2025-03-14 01:02:38,329 INFO L471 AbstractCegarLoop]: Abstraction has has 41 places, 44 transitions, 168 flow [2025-03-14 01:02:38,329 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.25) internal successors, (58), 8 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:02:38,329 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:02:38,329 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:02:38,329 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-14 01:02:38,329 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-14 01:02:38,330 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:02:38,330 INFO L85 PathProgramCache]: Analyzing trace with hash -2105802840, now seen corresponding path program 1 times [2025-03-14 01:02:38,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:02:38,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906564130] [2025-03-14 01:02:38,330 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-14 01:02:38,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:02:38,338 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-03-14 01:02:38,345 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-03-14 01:02:38,346 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-14 01:02:38,346 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:02:38,639 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-14 01:02:38,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:02:38,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906564130] [2025-03-14 01:02:38,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [906564130] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-14 01:02:38,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [807838655] [2025-03-14 01:02:38,640 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-14 01:02:38,640 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-14 01:02:38,640 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-14 01:02:38,644 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-14 01:02:38,646 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-14 01:02:38,702 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-03-14 01:02:38,739 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-03-14 01:02:38,740 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-14 01:02:38,741 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:02:38,748 INFO L256 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 20 conjuncts are in the unsatisfiable core [2025-03-14 01:02:38,755 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-14 01:02:39,130 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-14 01:02:39,130 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-14 01:02:39,755 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-14 01:02:39,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [807838655] provided 1 perfect and 1 imperfect interpolant sequences [2025-03-14 01:02:39,756 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-03-14 01:02:39,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [9, 9] total 25 [2025-03-14 01:02:39,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980958763] [2025-03-14 01:02:39,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 01:02:39,757 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-03-14 01:02:39,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:02:39,759 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-03-14 01:02:39,759 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=523, Unknown=0, NotChecked=0, Total=650 [2025-03-14 01:02:39,812 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 34 [2025-03-14 01:02:39,812 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 44 transitions, 168 flow. Second operand has 10 states, 10 states have (on average 6.9) internal successors, (69), 10 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:02:39,812 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:02:39,812 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 34 [2025-03-14 01:02:39,812 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:02:40,480 INFO L124 PetriNetUnfolderBase]: 930/1613 cut-off events. [2025-03-14 01:02:40,481 INFO L125 PetriNetUnfolderBase]: For 390/394 co-relation queries the response was YES. [2025-03-14 01:02:40,484 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4008 conditions, 1613 events. 930/1613 cut-off events. For 390/394 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 8412 event pairs, 98 based on Foata normal form. 5/1615 useless extension candidates. Maximal degree in co-relation 2669. Up to 304 conditions per place. [2025-03-14 01:02:40,490 INFO L140 encePairwiseOnDemand]: 23/34 looper letters, 122 selfloop transitions, 46 changer transitions 6/177 dead transitions. [2025-03-14 01:02:40,490 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 177 transitions, 946 flow [2025-03-14 01:02:40,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-03-14 01:02:40,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2025-03-14 01:02:40,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 212 transitions. [2025-03-14 01:02:40,492 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4796380090497738 [2025-03-14 01:02:40,492 INFO L175 Difference]: Start difference. First operand has 41 places, 44 transitions, 168 flow. Second operand 13 states and 212 transitions. [2025-03-14 01:02:40,492 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 177 transitions, 946 flow [2025-03-14 01:02:40,494 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 177 transitions, 942 flow, removed 2 selfloop flow, removed 0 redundant places. [2025-03-14 01:02:40,498 INFO L231 Difference]: Finished difference. Result has 62 places, 78 transitions, 521 flow [2025-03-14 01:02:40,499 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=521, PETRI_PLACES=62, PETRI_TRANSITIONS=78} [2025-03-14 01:02:40,499 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 32 predicate places. [2025-03-14 01:02:40,501 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 78 transitions, 521 flow [2025-03-14 01:02:40,501 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.9) internal successors, (69), 10 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:02:40,501 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:02:40,501 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:02:40,507 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-03-14 01:02:40,701 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-14 01:02:40,702 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-14 01:02:40,702 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:02:40,703 INFO L85 PathProgramCache]: Analyzing trace with hash -68932744, now seen corresponding path program 1 times [2025-03-14 01:02:40,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:02:40,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076815601] [2025-03-14 01:02:40,703 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-14 01:02:40,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:02:40,710 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-03-14 01:02:40,717 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-03-14 01:02:40,718 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-14 01:02:40,718 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:02:40,937 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-14 01:02:40,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:02:40,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076815601] [2025-03-14 01:02:40,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1076815601] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-14 01:02:40,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [434106769] [2025-03-14 01:02:40,938 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-14 01:02:40,938 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-14 01:02:40,938 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-14 01:02:40,939 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-14 01:02:40,941 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-14 01:02:40,979 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-03-14 01:02:40,995 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-03-14 01:02:40,995 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-14 01:02:40,995 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:02:40,996 INFO L256 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 20 conjuncts are in the unsatisfiable core [2025-03-14 01:02:40,998 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-14 01:02:41,257 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-14 01:02:41,257 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-14 01:02:41,785 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-14 01:02:41,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [434106769] provided 1 perfect and 1 imperfect interpolant sequences [2025-03-14 01:02:41,785 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-03-14 01:02:41,785 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9, 8] total 23 [2025-03-14 01:02:41,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95783620] [2025-03-14 01:02:41,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 01:02:41,785 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-14 01:02:41,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:02:41,786 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-14 01:02:41,786 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=440, Unknown=0, NotChecked=0, Total=552 [2025-03-14 01:02:41,829 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 34 [2025-03-14 01:02:41,829 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 78 transitions, 521 flow. Second operand has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 9 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:02:41,830 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:02:41,830 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 34 [2025-03-14 01:02:41,830 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:02:42,601 INFO L124 PetriNetUnfolderBase]: 1355/2368 cut-off events. [2025-03-14 01:02:42,602 INFO L125 PetriNetUnfolderBase]: For 3741/3745 co-relation queries the response was YES. [2025-03-14 01:02:42,607 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7575 conditions, 2368 events. 1355/2368 cut-off events. For 3741/3745 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 13453 event pairs, 267 based on Foata normal form. 5/2370 useless extension candidates. Maximal degree in co-relation 7496. Up to 697 conditions per place. [2025-03-14 01:02:42,618 INFO L140 encePairwiseOnDemand]: 22/34 looper letters, 175 selfloop transitions, 48 changer transitions 7/233 dead transitions. [2025-03-14 01:02:42,618 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 233 transitions, 1629 flow [2025-03-14 01:02:42,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-03-14 01:02:42,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2025-03-14 01:02:42,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 257 transitions. [2025-03-14 01:02:42,620 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5399159663865546 [2025-03-14 01:02:42,620 INFO L175 Difference]: Start difference. First operand has 62 places, 78 transitions, 521 flow. Second operand 14 states and 257 transitions. [2025-03-14 01:02:42,620 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 233 transitions, 1629 flow [2025-03-14 01:02:42,633 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 233 transitions, 1606 flow, removed 11 selfloop flow, removed 2 redundant places. [2025-03-14 01:02:42,635 INFO L231 Difference]: Finished difference. Result has 79 places, 97 transitions, 798 flow [2025-03-14 01:02:42,635 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=512, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=798, PETRI_PLACES=79, PETRI_TRANSITIONS=97} [2025-03-14 01:02:42,636 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 49 predicate places. [2025-03-14 01:02:42,636 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 97 transitions, 798 flow [2025-03-14 01:02:42,636 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 9 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:02:42,636 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:02:42,636 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:02:42,646 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-03-14 01:02:42,841 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2025-03-14 01:02:42,841 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-14 01:02:42,841 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:02:42,841 INFO L85 PathProgramCache]: Analyzing trace with hash -1548476456, now seen corresponding path program 1 times [2025-03-14 01:02:42,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:02:42,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367807599] [2025-03-14 01:02:42,842 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-14 01:02:42,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:02:42,847 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-03-14 01:02:42,851 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-03-14 01:02:42,851 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-14 01:02:42,851 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:02:42,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-14 01:02:42,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:02:42,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [367807599] [2025-03-14 01:02:42,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [367807599] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-14 01:02:42,901 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-14 01:02:42,901 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-14 01:02:42,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848883961] [2025-03-14 01:02:42,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 01:02:42,901 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-14 01:02:42,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:02:42,902 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-14 01:02:42,902 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-14 01:02:42,907 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 34 [2025-03-14 01:02:42,908 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 97 transitions, 798 flow. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:02:42,908 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:02:42,908 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 34 [2025-03-14 01:02:42,908 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:02:43,136 INFO L124 PetriNetUnfolderBase]: 980/1860 cut-off events. [2025-03-14 01:02:43,136 INFO L125 PetriNetUnfolderBase]: For 5104/5104 co-relation queries the response was YES. [2025-03-14 01:02:43,141 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6331 conditions, 1860 events. 980/1860 cut-off events. For 5104/5104 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 11075 event pairs, 563 based on Foata normal form. 72/1928 useless extension candidates. Maximal degree in co-relation 6256. Up to 906 conditions per place. [2025-03-14 01:02:43,148 INFO L140 encePairwiseOnDemand]: 26/34 looper letters, 100 selfloop transitions, 14 changer transitions 8/125 dead transitions. [2025-03-14 01:02:43,149 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 125 transitions, 1169 flow [2025-03-14 01:02:43,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-14 01:02:43,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-14 01:02:43,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 90 transitions. [2025-03-14 01:02:43,150 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4411764705882353 [2025-03-14 01:02:43,150 INFO L175 Difference]: Start difference. First operand has 79 places, 97 transitions, 798 flow. Second operand 6 states and 90 transitions. [2025-03-14 01:02:43,150 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 125 transitions, 1169 flow [2025-03-14 01:02:43,161 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 125 transitions, 1087 flow, removed 26 selfloop flow, removed 3 redundant places. [2025-03-14 01:02:43,162 INFO L231 Difference]: Finished difference. Result has 82 places, 85 transitions, 668 flow [2025-03-14 01:02:43,163 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=614, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=668, PETRI_PLACES=82, PETRI_TRANSITIONS=85} [2025-03-14 01:02:43,164 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 52 predicate places. [2025-03-14 01:02:43,164 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 85 transitions, 668 flow [2025-03-14 01:02:43,164 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:02:43,164 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:02:43,164 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:02:43,164 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-14 01:02:43,164 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-14 01:02:43,166 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:02:43,166 INFO L85 PathProgramCache]: Analyzing trace with hash 877291088, now seen corresponding path program 2 times [2025-03-14 01:02:43,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:02:43,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549252414] [2025-03-14 01:02:43,166 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-14 01:02:43,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:02:43,173 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 22 statements into 2 equivalence classes. [2025-03-14 01:02:43,181 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 21 of 22 statements. [2025-03-14 01:02:43,181 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-14 01:02:43,181 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:02:43,381 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-14 01:02:43,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:02:43,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549252414] [2025-03-14 01:02:43,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1549252414] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-14 01:02:43,381 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-14 01:02:43,381 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-03-14 01:02:43,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005595857] [2025-03-14 01:02:43,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 01:02:43,382 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-14 01:02:43,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:02:43,382 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-14 01:02:43,382 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2025-03-14 01:02:43,409 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 34 [2025-03-14 01:02:43,409 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 85 transitions, 668 flow. Second operand has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 9 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:02:43,409 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:02:43,409 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 34 [2025-03-14 01:02:43,409 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:02:43,825 INFO L124 PetriNetUnfolderBase]: 948/1734 cut-off events. [2025-03-14 01:02:43,825 INFO L125 PetriNetUnfolderBase]: For 5094/5110 co-relation queries the response was YES. [2025-03-14 01:02:43,831 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6361 conditions, 1734 events. 948/1734 cut-off events. For 5094/5110 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 9675 event pairs, 158 based on Foata normal form. 17/1748 useless extension candidates. Maximal degree in co-relation 5226. Up to 927 conditions per place. [2025-03-14 01:02:43,838 INFO L140 encePairwiseOnDemand]: 23/34 looper letters, 107 selfloop transitions, 47 changer transitions 5/162 dead transitions. [2025-03-14 01:02:43,838 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 162 transitions, 1395 flow [2025-03-14 01:02:43,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-03-14 01:02:43,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2025-03-14 01:02:43,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 161 transitions. [2025-03-14 01:02:43,840 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4304812834224599 [2025-03-14 01:02:43,840 INFO L175 Difference]: Start difference. First operand has 82 places, 85 transitions, 668 flow. Second operand 11 states and 161 transitions. [2025-03-14 01:02:43,840 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 162 transitions, 1395 flow [2025-03-14 01:02:43,853 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 162 transitions, 1373 flow, removed 7 selfloop flow, removed 3 redundant places. [2025-03-14 01:02:43,855 INFO L231 Difference]: Finished difference. Result has 95 places, 96 transitions, 934 flow [2025-03-14 01:02:43,855 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=654, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=934, PETRI_PLACES=95, PETRI_TRANSITIONS=96} [2025-03-14 01:02:43,856 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 65 predicate places. [2025-03-14 01:02:43,856 INFO L471 AbstractCegarLoop]: Abstraction has has 95 places, 96 transitions, 934 flow [2025-03-14 01:02:43,856 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 9 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:02:43,856 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:02:43,856 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:02:43,856 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-03-14 01:02:43,856 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-14 01:02:43,858 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:02:43,858 INFO L85 PathProgramCache]: Analyzing trace with hash 1691639750, now seen corresponding path program 3 times [2025-03-14 01:02:43,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:02:43,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310644518] [2025-03-14 01:02:43,858 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-14 01:02:43,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:02:43,866 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 22 statements into 2 equivalence classes. [2025-03-14 01:02:43,873 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 21 of 22 statements. [2025-03-14 01:02:43,873 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-03-14 01:02:43,873 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:02:44,054 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-14 01:02:44,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:02:44,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310644518] [2025-03-14 01:02:44,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [310644518] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-14 01:02:44,054 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-14 01:02:44,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-03-14 01:02:44,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590593072] [2025-03-14 01:02:44,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 01:02:44,055 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-14 01:02:44,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:02:44,055 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-14 01:02:44,055 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2025-03-14 01:02:44,082 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 34 [2025-03-14 01:02:44,083 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 96 transitions, 934 flow. Second operand has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 9 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:02:44,083 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:02:44,083 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 34 [2025-03-14 01:02:44,083 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:02:44,500 INFO L124 PetriNetUnfolderBase]: 938/1714 cut-off events. [2025-03-14 01:02:44,500 INFO L125 PetriNetUnfolderBase]: For 6398/6410 co-relation queries the response was YES. [2025-03-14 01:02:44,504 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6814 conditions, 1714 events. 938/1714 cut-off events. For 6398/6410 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 9521 event pairs, 156 based on Foata normal form. 13/1725 useless extension candidates. Maximal degree in co-relation 6716. Up to 518 conditions per place. [2025-03-14 01:02:44,510 INFO L140 encePairwiseOnDemand]: 23/34 looper letters, 132 selfloop transitions, 50 changer transitions 6/191 dead transitions. [2025-03-14 01:02:44,510 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 191 transitions, 1730 flow [2025-03-14 01:02:44,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-03-14 01:02:44,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2025-03-14 01:02:44,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 204 transitions. [2025-03-14 01:02:44,512 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.46153846153846156 [2025-03-14 01:02:44,512 INFO L175 Difference]: Start difference. First operand has 95 places, 96 transitions, 934 flow. Second operand 13 states and 204 transitions. [2025-03-14 01:02:44,512 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 191 transitions, 1730 flow [2025-03-14 01:02:44,525 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 191 transitions, 1661 flow, removed 16 selfloop flow, removed 5 redundant places. [2025-03-14 01:02:44,527 INFO L231 Difference]: Finished difference. Result has 104 places, 96 transitions, 989 flow [2025-03-14 01:02:44,527 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=873, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=989, PETRI_PLACES=104, PETRI_TRANSITIONS=96} [2025-03-14 01:02:44,528 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 74 predicate places. [2025-03-14 01:02:44,528 INFO L471 AbstractCegarLoop]: Abstraction has has 104 places, 96 transitions, 989 flow [2025-03-14 01:02:44,528 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 9 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:02:44,528 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:02:44,528 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:02:44,528 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-03-14 01:02:44,528 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-14 01:02:44,529 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:02:44,529 INFO L85 PathProgramCache]: Analyzing trace with hash -1579751142, now seen corresponding path program 4 times [2025-03-14 01:02:44,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:02:44,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [829528142] [2025-03-14 01:02:44,529 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-14 01:02:44,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:02:44,534 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 22 statements into 2 equivalence classes. [2025-03-14 01:02:44,539 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 22 of 22 statements. [2025-03-14 01:02:44,539 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-14 01:02:44,540 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:02:44,727 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-14 01:02:44,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:02:44,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [829528142] [2025-03-14 01:02:44,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [829528142] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-14 01:02:44,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [457231398] [2025-03-14 01:02:44,727 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-14 01:02:44,728 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-14 01:02:44,728 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-14 01:02:44,731 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-14 01:02:44,732 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-14 01:02:44,767 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 22 statements into 2 equivalence classes. [2025-03-14 01:02:44,784 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 22 of 22 statements. [2025-03-14 01:02:44,785 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-14 01:02:44,785 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:02:44,786 INFO L256 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 20 conjuncts are in the unsatisfiable core [2025-03-14 01:02:44,787 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-14 01:02:45,024 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-14 01:02:45,024 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-14 01:02:45,370 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-14 01:02:45,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [457231398] provided 1 perfect and 1 imperfect interpolant sequences [2025-03-14 01:02:45,371 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-03-14 01:02:45,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10, 9] total 26 [2025-03-14 01:02:45,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139903192] [2025-03-14 01:02:45,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 01:02:45,371 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-03-14 01:02:45,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:02:45,371 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-03-14 01:02:45,372 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=570, Unknown=0, NotChecked=0, Total=702 [2025-03-14 01:02:45,402 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 34 [2025-03-14 01:02:45,403 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 96 transitions, 989 flow. Second operand has 10 states, 10 states have (on average 6.9) internal successors, (69), 10 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:02:45,403 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:02:45,403 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 34 [2025-03-14 01:02:45,403 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:02:45,883 INFO L124 PetriNetUnfolderBase]: 920/1672 cut-off events. [2025-03-14 01:02:45,883 INFO L125 PetriNetUnfolderBase]: For 6733/6745 co-relation queries the response was YES. [2025-03-14 01:02:45,888 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6814 conditions, 1672 events. 920/1672 cut-off events. For 6733/6745 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 9179 event pairs, 163 based on Foata normal form. 13/1683 useless extension candidates. Maximal degree in co-relation 6740. Up to 517 conditions per place. [2025-03-14 01:02:45,895 INFO L140 encePairwiseOnDemand]: 23/34 looper letters, 116 selfloop transitions, 48 changer transitions 6/173 dead transitions. [2025-03-14 01:02:45,895 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 173 transitions, 1677 flow [2025-03-14 01:02:45,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-03-14 01:02:45,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2025-03-14 01:02:45,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 180 transitions. [2025-03-14 01:02:45,896 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4411764705882353 [2025-03-14 01:02:45,896 INFO L175 Difference]: Start difference. First operand has 104 places, 96 transitions, 989 flow. Second operand 12 states and 180 transitions. [2025-03-14 01:02:45,896 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 173 transitions, 1677 flow [2025-03-14 01:02:45,912 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 173 transitions, 1571 flow, removed 8 selfloop flow, removed 10 redundant places. [2025-03-14 01:02:45,916 INFO L231 Difference]: Finished difference. Result has 106 places, 96 transitions, 1000 flow [2025-03-14 01:02:45,916 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=887, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1000, PETRI_PLACES=106, PETRI_TRANSITIONS=96} [2025-03-14 01:02:45,917 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 76 predicate places. [2025-03-14 01:02:45,918 INFO L471 AbstractCegarLoop]: Abstraction has has 106 places, 96 transitions, 1000 flow [2025-03-14 01:02:45,918 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.9) internal successors, (69), 10 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:02:45,918 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:02:45,918 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:02:45,924 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-03-14 01:02:46,122 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-14 01:02:46,122 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-14 01:02:46,123 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:02:46,123 INFO L85 PathProgramCache]: Analyzing trace with hash 2122478446, now seen corresponding path program 5 times [2025-03-14 01:02:46,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:02:46,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176388434] [2025-03-14 01:02:46,123 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-14 01:02:46,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:02:46,129 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 22 statements into 2 equivalence classes. [2025-03-14 01:02:46,134 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 22 of 22 statements. [2025-03-14 01:02:46,136 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-14 01:02:46,137 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:02:46,286 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-14 01:02:46,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:02:46,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176388434] [2025-03-14 01:02:46,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1176388434] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-14 01:02:46,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1640941705] [2025-03-14 01:02:46,287 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-14 01:02:46,287 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-14 01:02:46,287 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-14 01:02:46,289 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-14 01:02:46,291 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-14 01:02:46,331 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 22 statements into 2 equivalence classes. [2025-03-14 01:02:46,347 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 22 of 22 statements. [2025-03-14 01:02:46,347 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-14 01:02:46,347 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:02:46,348 INFO L256 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 20 conjuncts are in the unsatisfiable core [2025-03-14 01:02:46,349 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-14 01:02:46,620 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-14 01:02:46,620 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-14 01:02:47,195 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-14 01:02:47,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1640941705] provided 1 perfect and 1 imperfect interpolant sequences [2025-03-14 01:02:47,196 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-03-14 01:02:47,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [9, 9] total 25 [2025-03-14 01:02:47,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336477705] [2025-03-14 01:02:47,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 01:02:47,196 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-03-14 01:02:47,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:02:47,197 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-03-14 01:02:47,197 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=513, Unknown=0, NotChecked=0, Total=650 [2025-03-14 01:02:47,249 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 34 [2025-03-14 01:02:47,249 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 96 transitions, 1000 flow. Second operand has 10 states, 10 states have (on average 6.9) internal successors, (69), 10 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:02:47,249 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:02:47,249 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 34 [2025-03-14 01:02:47,249 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:02:47,871 INFO L124 PetriNetUnfolderBase]: 998/1835 cut-off events. [2025-03-14 01:02:47,871 INFO L125 PetriNetUnfolderBase]: For 7722/7734 co-relation queries the response was YES. [2025-03-14 01:02:47,877 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7394 conditions, 1835 events. 998/1835 cut-off events. For 7722/7734 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 10396 event pairs, 164 based on Foata normal form. 13/1845 useless extension candidates. Maximal degree in co-relation 7309. Up to 517 conditions per place. [2025-03-14 01:02:47,885 INFO L140 encePairwiseOnDemand]: 23/34 looper letters, 132 selfloop transitions, 51 changer transitions 6/192 dead transitions. [2025-03-14 01:02:47,886 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 192 transitions, 1820 flow [2025-03-14 01:02:47,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-03-14 01:02:47,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2025-03-14 01:02:47,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 203 transitions. [2025-03-14 01:02:47,887 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4592760180995475 [2025-03-14 01:02:47,887 INFO L175 Difference]: Start difference. First operand has 106 places, 96 transitions, 1000 flow. Second operand 13 states and 203 transitions. [2025-03-14 01:02:47,887 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 192 transitions, 1820 flow [2025-03-14 01:02:47,905 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 192 transitions, 1727 flow, removed 7 selfloop flow, removed 9 redundant places. [2025-03-14 01:02:47,908 INFO L231 Difference]: Finished difference. Result has 111 places, 100 transitions, 1096 flow [2025-03-14 01:02:47,909 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=921, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1096, PETRI_PLACES=111, PETRI_TRANSITIONS=100} [2025-03-14 01:02:47,909 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 81 predicate places. [2025-03-14 01:02:47,909 INFO L471 AbstractCegarLoop]: Abstraction has has 111 places, 100 transitions, 1096 flow [2025-03-14 01:02:47,909 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.9) internal successors, (69), 10 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:02:47,909 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:02:47,909 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:02:47,916 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-03-14 01:02:48,110 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-14 01:02:48,110 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-14 01:02:48,111 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:02:48,111 INFO L85 PathProgramCache]: Analyzing trace with hash -19175634, now seen corresponding path program 6 times [2025-03-14 01:02:48,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:02:48,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486502551] [2025-03-14 01:02:48,112 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-14 01:02:48,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:02:48,118 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 22 statements into 2 equivalence classes. [2025-03-14 01:02:48,125 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) and asserted 21 of 22 statements. [2025-03-14 01:02:48,125 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2025-03-14 01:02:48,126 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:02:48,316 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-14 01:02:48,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:02:48,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486502551] [2025-03-14 01:02:48,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [486502551] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-14 01:02:48,316 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-14 01:02:48,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-03-14 01:02:48,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854020151] [2025-03-14 01:02:48,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 01:02:48,318 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-14 01:02:48,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:02:48,318 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-14 01:02:48,318 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2025-03-14 01:02:48,344 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 34 [2025-03-14 01:02:48,345 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 100 transitions, 1096 flow. Second operand has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 9 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:02:48,345 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:02:48,345 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 34 [2025-03-14 01:02:48,345 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:02:48,706 INFO L124 PetriNetUnfolderBase]: 980/1794 cut-off events. [2025-03-14 01:02:48,706 INFO L125 PetriNetUnfolderBase]: For 8180/8192 co-relation queries the response was YES. [2025-03-14 01:02:48,711 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7438 conditions, 1794 events. 980/1794 cut-off events. For 8180/8192 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 10037 event pairs, 181 based on Foata normal form. 7/1798 useless extension candidates. Maximal degree in co-relation 7356. Up to 837 conditions per place. [2025-03-14 01:02:48,718 INFO L140 encePairwiseOnDemand]: 23/34 looper letters, 95 selfloop transitions, 52 changer transitions 6/156 dead transitions. [2025-03-14 01:02:48,718 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 156 transitions, 1650 flow [2025-03-14 01:02:48,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-03-14 01:02:48,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2025-03-14 01:02:48,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 154 transitions. [2025-03-14 01:02:48,720 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4117647058823529 [2025-03-14 01:02:48,720 INFO L175 Difference]: Start difference. First operand has 111 places, 100 transitions, 1096 flow. Second operand 11 states and 154 transitions. [2025-03-14 01:02:48,720 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 156 transitions, 1650 flow [2025-03-14 01:02:48,743 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 156 transitions, 1598 flow, removed 1 selfloop flow, removed 7 redundant places. [2025-03-14 01:02:48,746 INFO L231 Difference]: Finished difference. Result has 115 places, 101 transitions, 1176 flow [2025-03-14 01:02:48,746 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=1044, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1176, PETRI_PLACES=115, PETRI_TRANSITIONS=101} [2025-03-14 01:02:48,747 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 85 predicate places. [2025-03-14 01:02:48,747 INFO L471 AbstractCegarLoop]: Abstraction has has 115 places, 101 transitions, 1176 flow [2025-03-14 01:02:48,747 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 9 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:02:48,747 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:02:48,747 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:02:48,747 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2025-03-14 01:02:48,749 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-14 01:02:48,749 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:02:48,749 INFO L85 PathProgramCache]: Analyzing trace with hash -144835976, now seen corresponding path program 2 times [2025-03-14 01:02:48,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:02:48,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608876748] [2025-03-14 01:02:48,749 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-14 01:02:48,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:02:48,756 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 22 statements into 2 equivalence classes. [2025-03-14 01:02:48,765 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 21 of 22 statements. [2025-03-14 01:02:48,765 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-14 01:02:48,765 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:02:48,929 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-14 01:02:48,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:02:48,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608876748] [2025-03-14 01:02:48,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [608876748] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-14 01:02:48,930 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-14 01:02:48,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-03-14 01:02:48,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838812899] [2025-03-14 01:02:48,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 01:02:48,930 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-14 01:02:48,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:02:48,931 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-14 01:02:48,931 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2025-03-14 01:02:48,952 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 34 [2025-03-14 01:02:48,952 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 101 transitions, 1176 flow. Second operand has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 9 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:02:48,952 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:02:48,952 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 34 [2025-03-14 01:02:48,952 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:02:49,285 INFO L124 PetriNetUnfolderBase]: 967/1766 cut-off events. [2025-03-14 01:02:49,285 INFO L125 PetriNetUnfolderBase]: For 8648/8660 co-relation queries the response was YES. [2025-03-14 01:02:49,292 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7637 conditions, 1766 events. 967/1766 cut-off events. For 8648/8660 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 9785 event pairs, 182 based on Foata normal form. 13/1776 useless extension candidates. Maximal degree in co-relation 7554. Up to 738 conditions per place. [2025-03-14 01:02:49,297 INFO L140 encePairwiseOnDemand]: 23/34 looper letters, 117 selfloop transitions, 49 changer transitions 8/177 dead transitions. [2025-03-14 01:02:49,297 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 177 transitions, 1911 flow [2025-03-14 01:02:49,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-03-14 01:02:49,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2025-03-14 01:02:49,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 179 transitions. [2025-03-14 01:02:49,300 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.40497737556561086 [2025-03-14 01:02:49,300 INFO L175 Difference]: Start difference. First operand has 115 places, 101 transitions, 1176 flow. Second operand 13 states and 179 transitions. [2025-03-14 01:02:49,300 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 177 transitions, 1911 flow [2025-03-14 01:02:49,324 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 177 transitions, 1753 flow, removed 16 selfloop flow, removed 11 redundant places. [2025-03-14 01:02:49,326 INFO L231 Difference]: Finished difference. Result has 122 places, 110 transitions, 1291 flow [2025-03-14 01:02:49,327 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=1042, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1291, PETRI_PLACES=122, PETRI_TRANSITIONS=110} [2025-03-14 01:02:49,327 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 92 predicate places. [2025-03-14 01:02:49,328 INFO L471 AbstractCegarLoop]: Abstraction has has 122 places, 110 transitions, 1291 flow [2025-03-14 01:02:49,328 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 9 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:02:49,328 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:02:49,328 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:02:49,328 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2025-03-14 01:02:49,328 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-14 01:02:49,329 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:02:49,329 INFO L85 PathProgramCache]: Analyzing trace with hash -2082924026, now seen corresponding path program 3 times [2025-03-14 01:02:49,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:02:49,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [630937135] [2025-03-14 01:02:49,329 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-14 01:02:49,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:02:49,334 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 22 statements into 2 equivalence classes. [2025-03-14 01:02:49,339 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 21 of 22 statements. [2025-03-14 01:02:49,339 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-03-14 01:02:49,339 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:02:49,510 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-14 01:02:49,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:02:49,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [630937135] [2025-03-14 01:02:49,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [630937135] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-14 01:02:49,511 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-14 01:02:49,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-14 01:02:49,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100622721] [2025-03-14 01:02:49,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 01:02:49,511 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-14 01:02:49,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:02:49,512 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-14 01:02:49,512 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2025-03-14 01:02:49,525 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 34 [2025-03-14 01:02:49,526 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 110 transitions, 1291 flow. Second operand has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:02:49,526 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:02:49,526 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 34 [2025-03-14 01:02:49,526 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:02:49,797 INFO L124 PetriNetUnfolderBase]: 948/1729 cut-off events. [2025-03-14 01:02:49,798 INFO L125 PetriNetUnfolderBase]: For 8767/8775 co-relation queries the response was YES. [2025-03-14 01:02:49,803 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7473 conditions, 1729 events. 948/1729 cut-off events. For 8767/8775 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 9532 event pairs, 174 based on Foata normal form. 9/1738 useless extension candidates. Maximal degree in co-relation 7399. Up to 1020 conditions per place. [2025-03-14 01:02:49,807 INFO L140 encePairwiseOnDemand]: 24/34 looper letters, 104 selfloop transitions, 46 changer transitions 5/158 dead transitions. [2025-03-14 01:02:49,808 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 158 transitions, 1779 flow [2025-03-14 01:02:49,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-14 01:02:49,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-03-14 01:02:49,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 143 transitions. [2025-03-14 01:02:49,809 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.42058823529411765 [2025-03-14 01:02:49,809 INFO L175 Difference]: Start difference. First operand has 122 places, 110 transitions, 1291 flow. Second operand 10 states and 143 transitions. [2025-03-14 01:02:49,809 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 158 transitions, 1779 flow [2025-03-14 01:02:49,832 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 158 transitions, 1715 flow, removed 13 selfloop flow, removed 5 redundant places. [2025-03-14 01:02:49,834 INFO L231 Difference]: Finished difference. Result has 126 places, 109 transitions, 1325 flow [2025-03-14 01:02:49,834 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=1227, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1325, PETRI_PLACES=126, PETRI_TRANSITIONS=109} [2025-03-14 01:02:49,834 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 96 predicate places. [2025-03-14 01:02:49,835 INFO L471 AbstractCegarLoop]: Abstraction has has 126 places, 109 transitions, 1325 flow [2025-03-14 01:02:49,835 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:02:49,835 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:02:49,835 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:02:49,835 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2025-03-14 01:02:49,835 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-14 01:02:49,835 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:02:49,835 INFO L85 PathProgramCache]: Analyzing trace with hash 1204203037, now seen corresponding path program 1 times [2025-03-14 01:02:49,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:02:49,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523217052] [2025-03-14 01:02:49,835 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-14 01:02:49,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:02:49,839 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-03-14 01:02:49,842 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-03-14 01:02:49,842 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-14 01:02:49,842 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:02:49,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-14 01:02:49,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:02:49,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523217052] [2025-03-14 01:02:49,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1523217052] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-14 01:02:49,883 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-14 01:02:49,883 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-14 01:02:49,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563583361] [2025-03-14 01:02:49,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 01:02:49,883 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-14 01:02:49,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:02:49,884 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-14 01:02:49,884 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-14 01:02:49,890 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 34 [2025-03-14 01:02:49,891 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 109 transitions, 1325 flow. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:02:49,891 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:02:49,891 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 34 [2025-03-14 01:02:49,891 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:02:50,047 INFO L124 PetriNetUnfolderBase]: 715/1351 cut-off events. [2025-03-14 01:02:50,047 INFO L125 PetriNetUnfolderBase]: For 6856/6868 co-relation queries the response was YES. [2025-03-14 01:02:50,051 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5896 conditions, 1351 events. 715/1351 cut-off events. For 6856/6868 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 7374 event pairs, 419 based on Foata normal form. 46/1397 useless extension candidates. Maximal degree in co-relation 5479. Up to 970 conditions per place. [2025-03-14 01:02:50,056 INFO L140 encePairwiseOnDemand]: 28/34 looper letters, 92 selfloop transitions, 7 changer transitions 16/118 dead transitions. [2025-03-14 01:02:50,056 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 118 transitions, 1507 flow [2025-03-14 01:02:50,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-14 01:02:50,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-14 01:02:50,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 78 transitions. [2025-03-14 01:02:50,057 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4588235294117647 [2025-03-14 01:02:50,057 INFO L175 Difference]: Start difference. First operand has 126 places, 109 transitions, 1325 flow. Second operand 5 states and 78 transitions. [2025-03-14 01:02:50,057 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 118 transitions, 1507 flow [2025-03-14 01:02:50,073 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 118 transitions, 1416 flow, removed 7 selfloop flow, removed 7 redundant places. [2025-03-14 01:02:50,075 INFO L231 Difference]: Finished difference. Result has 123 places, 86 transitions, 862 flow [2025-03-14 01:02:50,075 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=1019, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=862, PETRI_PLACES=123, PETRI_TRANSITIONS=86} [2025-03-14 01:02:50,076 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 93 predicate places. [2025-03-14 01:02:50,076 INFO L471 AbstractCegarLoop]: Abstraction has has 123 places, 86 transitions, 862 flow [2025-03-14 01:02:50,076 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:02:50,076 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:02:50,076 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:02:50,076 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2025-03-14 01:02:50,077 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-14 01:02:50,077 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:02:50,077 INFO L85 PathProgramCache]: Analyzing trace with hash -553590806, now seen corresponding path program 4 times [2025-03-14 01:02:50,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:02:50,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342933002] [2025-03-14 01:02:50,077 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-14 01:02:50,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:02:50,082 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 22 statements into 2 equivalence classes. [2025-03-14 01:02:50,089 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 22 of 22 statements. [2025-03-14 01:02:50,089 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-14 01:02:50,089 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:02:50,254 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-14 01:02:50,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:02:50,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1342933002] [2025-03-14 01:02:50,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1342933002] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-14 01:02:50,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1424548873] [2025-03-14 01:02:50,255 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-14 01:02:50,255 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-14 01:02:50,255 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-14 01:02:50,258 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-14 01:02:50,259 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-03-14 01:02:50,297 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 22 statements into 2 equivalence classes. [2025-03-14 01:02:50,312 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 22 of 22 statements. [2025-03-14 01:02:50,312 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-14 01:02:50,312 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:02:50,313 INFO L256 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 18 conjuncts are in the unsatisfiable core [2025-03-14 01:02:50,314 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-14 01:02:50,548 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-14 01:02:50,548 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-14 01:02:50,838 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-14 01:02:50,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1424548873] provided 1 perfect and 1 imperfect interpolant sequences [2025-03-14 01:02:50,838 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-03-14 01:02:50,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [10, 10] total 26 [2025-03-14 01:02:50,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197675808] [2025-03-14 01:02:50,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 01:02:50,838 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-03-14 01:02:50,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:02:50,839 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-03-14 01:02:50,839 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=532, Unknown=0, NotChecked=0, Total=650 [2025-03-14 01:02:50,862 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 34 [2025-03-14 01:02:50,863 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 86 transitions, 862 flow. Second operand has 10 states, 10 states have (on average 6.0) internal successors, (60), 10 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:02:50,863 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:02:50,863 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 34 [2025-03-14 01:02:50,863 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:02:51,481 INFO L124 PetriNetUnfolderBase]: 925/1648 cut-off events. [2025-03-14 01:02:51,482 INFO L125 PetriNetUnfolderBase]: For 7419/7427 co-relation queries the response was YES. [2025-03-14 01:02:51,488 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6904 conditions, 1648 events. 925/1648 cut-off events. For 7419/7427 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 8650 event pairs, 159 based on Foata normal form. 6/1654 useless extension candidates. Maximal degree in co-relation 6528. Up to 559 conditions per place. [2025-03-14 01:02:51,494 INFO L140 encePairwiseOnDemand]: 19/34 looper letters, 147 selfloop transitions, 54 changer transitions 11/214 dead transitions. [2025-03-14 01:02:51,494 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 214 transitions, 2036 flow [2025-03-14 01:02:51,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-03-14 01:02:51,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2025-03-14 01:02:51,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 225 transitions. [2025-03-14 01:02:51,496 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4411764705882353 [2025-03-14 01:02:51,496 INFO L175 Difference]: Start difference. First operand has 123 places, 86 transitions, 862 flow. Second operand 15 states and 225 transitions. [2025-03-14 01:02:51,496 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 214 transitions, 2036 flow [2025-03-14 01:02:51,514 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 214 transitions, 1933 flow, removed 38 selfloop flow, removed 9 redundant places. [2025-03-14 01:02:51,517 INFO L231 Difference]: Finished difference. Result has 130 places, 105 transitions, 1157 flow [2025-03-14 01:02:51,517 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=793, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1157, PETRI_PLACES=130, PETRI_TRANSITIONS=105} [2025-03-14 01:02:51,517 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 100 predicate places. [2025-03-14 01:02:51,518 INFO L471 AbstractCegarLoop]: Abstraction has has 130 places, 105 transitions, 1157 flow [2025-03-14 01:02:51,518 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.0) internal successors, (60), 10 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:02:51,518 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:02:51,518 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:02:51,524 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2025-03-14 01:02:51,718 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2025-03-14 01:02:51,719 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-14 01:02:51,720 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:02:51,720 INFO L85 PathProgramCache]: Analyzing trace with hash 2012899856, now seen corresponding path program 5 times [2025-03-14 01:02:51,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:02:51,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788786271] [2025-03-14 01:02:51,720 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-14 01:02:51,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:02:51,725 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 22 statements into 2 equivalence classes. [2025-03-14 01:02:51,730 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 22 of 22 statements. [2025-03-14 01:02:51,730 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-14 01:02:51,730 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:02:51,863 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-14 01:02:51,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:02:51,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788786271] [2025-03-14 01:02:51,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1788786271] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-14 01:02:51,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2085167155] [2025-03-14 01:02:51,863 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-14 01:02:51,864 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-14 01:02:51,864 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-14 01:02:51,866 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-14 01:02:51,868 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-03-14 01:02:51,908 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 22 statements into 2 equivalence classes. [2025-03-14 01:02:51,923 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 22 of 22 statements. [2025-03-14 01:02:51,923 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-14 01:02:51,923 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:02:51,924 INFO L256 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 20 conjuncts are in the unsatisfiable core [2025-03-14 01:02:51,925 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-14 01:02:52,126 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-14 01:02:52,126 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-14 01:02:52,679 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-14 01:02:52,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2085167155] provided 1 perfect and 1 imperfect interpolant sequences [2025-03-14 01:02:52,679 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-03-14 01:02:52,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8, 8] total 22 [2025-03-14 01:02:52,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332807626] [2025-03-14 01:02:52,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 01:02:52,680 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-14 01:02:52,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:02:52,680 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-14 01:02:52,680 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=399, Unknown=0, NotChecked=0, Total=506 [2025-03-14 01:02:52,712 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 34 [2025-03-14 01:02:52,713 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 105 transitions, 1157 flow. Second operand has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 9 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:02:52,713 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:02:52,713 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 34 [2025-03-14 01:02:52,713 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:02:53,209 INFO L124 PetriNetUnfolderBase]: 796/1442 cut-off events. [2025-03-14 01:02:53,209 INFO L125 PetriNetUnfolderBase]: For 7913/7931 co-relation queries the response was YES. [2025-03-14 01:02:53,214 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6642 conditions, 1442 events. 796/1442 cut-off events. For 7913/7931 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 7545 event pairs, 184 based on Foata normal form. 5/1444 useless extension candidates. Maximal degree in co-relation 6567. Up to 983 conditions per place. [2025-03-14 01:02:53,218 INFO L140 encePairwiseOnDemand]: 23/34 looper letters, 87 selfloop transitions, 30 changer transitions 18/140 dead transitions. [2025-03-14 01:02:53,218 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 140 transitions, 1578 flow [2025-03-14 01:02:53,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-03-14 01:02:53,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2025-03-14 01:02:53,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 140 transitions. [2025-03-14 01:02:53,219 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3431372549019608 [2025-03-14 01:02:53,219 INFO L175 Difference]: Start difference. First operand has 130 places, 105 transitions, 1157 flow. Second operand 12 states and 140 transitions. [2025-03-14 01:02:53,219 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 140 transitions, 1578 flow [2025-03-14 01:02:53,237 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 140 transitions, 1412 flow, removed 29 selfloop flow, removed 13 redundant places. [2025-03-14 01:02:53,239 INFO L231 Difference]: Finished difference. Result has 127 places, 98 transitions, 964 flow [2025-03-14 01:02:53,239 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=997, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=964, PETRI_PLACES=127, PETRI_TRANSITIONS=98} [2025-03-14 01:02:53,239 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 97 predicate places. [2025-03-14 01:02:53,239 INFO L471 AbstractCegarLoop]: Abstraction has has 127 places, 98 transitions, 964 flow [2025-03-14 01:02:53,240 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 9 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:02:53,240 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:02:53,240 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:02:53,246 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2025-03-14 01:02:53,444 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2025-03-14 01:02:53,444 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-14 01:02:53,445 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:02:53,445 INFO L85 PathProgramCache]: Analyzing trace with hash -1645220800, now seen corresponding path program 6 times [2025-03-14 01:02:53,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:02:53,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886721621] [2025-03-14 01:02:53,445 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-14 01:02:53,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:02:53,449 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 22 statements into 2 equivalence classes. [2025-03-14 01:02:53,453 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) and asserted 21 of 22 statements. [2025-03-14 01:02:53,453 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2025-03-14 01:02:53,453 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:02:53,587 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-14 01:02:53,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:02:53,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886721621] [2025-03-14 01:02:53,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [886721621] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-14 01:02:53,588 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-14 01:02:53,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-14 01:02:53,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117923050] [2025-03-14 01:02:53,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 01:02:53,590 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-14 01:02:53,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:02:53,590 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-14 01:02:53,590 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2025-03-14 01:02:53,608 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 34 [2025-03-14 01:02:53,608 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 98 transitions, 964 flow. Second operand has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:02:53,608 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:02:53,608 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 34 [2025-03-14 01:02:53,608 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:02:53,837 INFO L124 PetriNetUnfolderBase]: 767/1376 cut-off events. [2025-03-14 01:02:53,838 INFO L125 PetriNetUnfolderBase]: For 6064/6078 co-relation queries the response was YES. [2025-03-14 01:02:53,842 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6024 conditions, 1376 events. 767/1376 cut-off events. For 6064/6078 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 7003 event pairs, 184 based on Foata normal form. 1/1374 useless extension candidates. Maximal degree in co-relation 5958. Up to 983 conditions per place. [2025-03-14 01:02:53,846 INFO L140 encePairwiseOnDemand]: 23/34 looper letters, 69 selfloop transitions, 25 changer transitions 24/123 dead transitions. [2025-03-14 01:02:53,846 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 123 transitions, 1293 flow [2025-03-14 01:02:53,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-14 01:02:53,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-03-14 01:02:53,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 117 transitions. [2025-03-14 01:02:53,847 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.34411764705882353 [2025-03-14 01:02:53,847 INFO L175 Difference]: Start difference. First operand has 127 places, 98 transitions, 964 flow. Second operand 10 states and 117 transitions. [2025-03-14 01:02:53,847 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 123 transitions, 1293 flow [2025-03-14 01:02:53,861 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 123 transitions, 1222 flow, removed 4 selfloop flow, removed 11 redundant places. [2025-03-14 01:02:53,862 INFO L231 Difference]: Finished difference. Result has 122 places, 89 transitions, 851 flow [2025-03-14 01:02:53,862 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=893, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=851, PETRI_PLACES=122, PETRI_TRANSITIONS=89} [2025-03-14 01:02:53,863 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 92 predicate places. [2025-03-14 01:02:53,863 INFO L471 AbstractCegarLoop]: Abstraction has has 122 places, 89 transitions, 851 flow [2025-03-14 01:02:53,863 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:02:53,863 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:02:53,863 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:02:53,863 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2025-03-14 01:02:53,863 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-14 01:02:53,864 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:02:53,864 INFO L85 PathProgramCache]: Analyzing trace with hash -1708104337, now seen corresponding path program 1 times [2025-03-14 01:02:53,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:02:53,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462652254] [2025-03-14 01:02:53,864 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-14 01:02:53,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:02:53,870 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 23 statements into 1 equivalence classes. [2025-03-14 01:02:53,872 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-03-14 01:02:53,873 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-14 01:02:53,873 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:02:53,911 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-14 01:02:53,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:02:53,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462652254] [2025-03-14 01:02:53,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1462652254] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-14 01:02:53,911 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-14 01:02:53,911 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-14 01:02:53,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897786168] [2025-03-14 01:02:53,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 01:02:53,912 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-14 01:02:53,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:02:53,913 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-14 01:02:53,913 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-14 01:02:53,920 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 34 [2025-03-14 01:02:53,920 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 89 transitions, 851 flow. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 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) [2025-03-14 01:02:53,920 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:02:53,920 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 34 [2025-03-14 01:02:53,920 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:02:54,054 INFO L124 PetriNetUnfolderBase]: 536/1019 cut-off events. [2025-03-14 01:02:54,054 INFO L125 PetriNetUnfolderBase]: For 4533/4543 co-relation queries the response was YES. [2025-03-14 01:02:54,059 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4347 conditions, 1019 events. 536/1019 cut-off events. For 4533/4543 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 5145 event pairs, 307 based on Foata normal form. 36/1053 useless extension candidates. Maximal degree in co-relation 4291. Up to 565 conditions per place. [2025-03-14 01:02:54,061 INFO L140 encePairwiseOnDemand]: 28/34 looper letters, 84 selfloop transitions, 9 changer transitions 6/104 dead transitions. [2025-03-14 01:02:54,061 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 104 transitions, 1107 flow [2025-03-14 01:02:54,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-14 01:02:54,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-14 01:02:54,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 81 transitions. [2025-03-14 01:02:54,062 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4764705882352941 [2025-03-14 01:02:54,062 INFO L175 Difference]: Start difference. First operand has 122 places, 89 transitions, 851 flow. Second operand 5 states and 81 transitions. [2025-03-14 01:02:54,062 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 104 transitions, 1107 flow [2025-03-14 01:02:54,073 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 104 transitions, 934 flow, removed 26 selfloop flow, removed 18 redundant places. [2025-03-14 01:02:54,074 INFO L231 Difference]: Finished difference. Result has 93 places, 77 transitions, 592 flow [2025-03-14 01:02:54,074 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=595, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=592, PETRI_PLACES=93, PETRI_TRANSITIONS=77} [2025-03-14 01:02:54,075 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 63 predicate places. [2025-03-14 01:02:54,075 INFO L471 AbstractCegarLoop]: Abstraction has has 93 places, 77 transitions, 592 flow [2025-03-14 01:02:54,075 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 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) [2025-03-14 01:02:54,075 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:02:54,076 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:02:54,076 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2025-03-14 01:02:54,076 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-14 01:02:54,076 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:02:54,076 INFO L85 PathProgramCache]: Analyzing trace with hash 136161610, now seen corresponding path program 1 times [2025-03-14 01:02:54,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:02:54,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10118429] [2025-03-14 01:02:54,076 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-14 01:02:54,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:02:54,081 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 23 statements into 1 equivalence classes. [2025-03-14 01:02:54,084 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-03-14 01:02:54,084 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-14 01:02:54,084 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:02:54,120 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-14 01:02:54,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:02:54,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10118429] [2025-03-14 01:02:54,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [10118429] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-14 01:02:54,120 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-14 01:02:54,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-14 01:02:54,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148995346] [2025-03-14 01:02:54,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 01:02:54,121 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-14 01:02:54,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:02:54,121 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-14 01:02:54,122 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-14 01:02:54,127 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 34 [2025-03-14 01:02:54,128 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 77 transitions, 592 flow. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 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) [2025-03-14 01:02:54,128 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:02:54,128 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 34 [2025-03-14 01:02:54,128 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:02:54,218 INFO L124 PetriNetUnfolderBase]: 388/742 cut-off events. [2025-03-14 01:02:54,218 INFO L125 PetriNetUnfolderBase]: For 2248/2261 co-relation queries the response was YES. [2025-03-14 01:02:54,220 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2930 conditions, 742 events. 388/742 cut-off events. For 2248/2261 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 3472 event pairs, 231 based on Foata normal form. 24/763 useless extension candidates. Maximal degree in co-relation 2900. Up to 565 conditions per place. [2025-03-14 01:02:54,222 INFO L140 encePairwiseOnDemand]: 29/34 looper letters, 48 selfloop transitions, 2 changer transitions 25/80 dead transitions. [2025-03-14 01:02:54,222 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 80 transitions, 716 flow [2025-03-14 01:02:54,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-14 01:02:54,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-14 01:02:54,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 71 transitions. [2025-03-14 01:02:54,222 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4176470588235294 [2025-03-14 01:02:54,223 INFO L175 Difference]: Start difference. First operand has 93 places, 77 transitions, 592 flow. Second operand 5 states and 71 transitions. [2025-03-14 01:02:54,223 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 80 transitions, 716 flow [2025-03-14 01:02:54,227 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 80 transitions, 688 flow, removed 5 selfloop flow, removed 9 redundant places. [2025-03-14 01:02:54,228 INFO L231 Difference]: Finished difference. Result has 83 places, 55 transitions, 363 flow [2025-03-14 01:02:54,229 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=480, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=363, PETRI_PLACES=83, PETRI_TRANSITIONS=55} [2025-03-14 01:02:54,229 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 53 predicate places. [2025-03-14 01:02:54,229 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 55 transitions, 363 flow [2025-03-14 01:02:54,229 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 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) [2025-03-14 01:02:54,229 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:02:54,229 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:02:54,229 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2025-03-14 01:02:54,230 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-14 01:02:54,230 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:02:54,230 INFO L85 PathProgramCache]: Analyzing trace with hash 1685065887, now seen corresponding path program 1 times [2025-03-14 01:02:54,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:02:54,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446180846] [2025-03-14 01:02:54,230 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-14 01:02:54,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:02:54,234 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 23 statements into 1 equivalence classes. [2025-03-14 01:02:54,237 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-03-14 01:02:54,237 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-14 01:02:54,237 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:02:54,320 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-14 01:02:54,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:02:54,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446180846] [2025-03-14 01:02:54,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [446180846] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-14 01:02:54,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1443790820] [2025-03-14 01:02:54,320 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-14 01:02:54,320 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-14 01:02:54,320 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-14 01:02:54,322 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-14 01:02:54,325 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-03-14 01:02:54,365 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 23 statements into 1 equivalence classes. [2025-03-14 01:02:54,381 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-03-14 01:02:54,381 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-14 01:02:54,381 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:02:54,382 INFO L256 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-03-14 01:02:54,383 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-14 01:02:54,450 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-14 01:02:54,450 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-14 01:02:54,519 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-14 01:02:54,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1443790820] provided 1 perfect and 1 imperfect interpolant sequences [2025-03-14 01:02:54,519 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-03-14 01:02:54,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 6] total 14 [2025-03-14 01:02:54,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95806922] [2025-03-14 01:02:54,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 01:02:54,520 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-14 01:02:54,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:02:54,520 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-14 01:02:54,520 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2025-03-14 01:02:54,530 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 34 [2025-03-14 01:02:54,531 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 55 transitions, 363 flow. Second operand has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:02:54,531 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:02:54,531 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 34 [2025-03-14 01:02:54,531 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:02:54,625 INFO L124 PetriNetUnfolderBase]: 442/763 cut-off events. [2025-03-14 01:02:54,625 INFO L125 PetriNetUnfolderBase]: For 1324/1341 co-relation queries the response was YES. [2025-03-14 01:02:54,627 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2842 conditions, 763 events. 442/763 cut-off events. For 1324/1341 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 3201 event pairs, 202 based on Foata normal form. 32/792 useless extension candidates. Maximal degree in co-relation 2816. Up to 487 conditions per place. [2025-03-14 01:02:54,629 INFO L140 encePairwiseOnDemand]: 25/34 looper letters, 63 selfloop transitions, 9 changer transitions 0/76 dead transitions. [2025-03-14 01:02:54,629 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 76 transitions, 657 flow [2025-03-14 01:02:54,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-14 01:02:54,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-03-14 01:02:54,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 69 transitions. [2025-03-14 01:02:54,631 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.28991596638655465 [2025-03-14 01:02:54,631 INFO L175 Difference]: Start difference. First operand has 83 places, 55 transitions, 363 flow. Second operand 7 states and 69 transitions. [2025-03-14 01:02:54,631 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 76 transitions, 657 flow [2025-03-14 01:02:54,633 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 76 transitions, 635 flow, removed 9 selfloop flow, removed 7 redundant places. [2025-03-14 01:02:54,634 INFO L231 Difference]: Finished difference. Result has 69 places, 57 transitions, 394 flow [2025-03-14 01:02:54,634 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=347, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=394, PETRI_PLACES=69, PETRI_TRANSITIONS=57} [2025-03-14 01:02:54,635 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 39 predicate places. [2025-03-14 01:02:54,635 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 57 transitions, 394 flow [2025-03-14 01:02:54,635 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:02:54,635 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:02:54,635 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:02:54,641 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2025-03-14 01:02:54,835 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-14 01:02:54,835 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-14 01:02:54,836 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:02:54,836 INFO L85 PathProgramCache]: Analyzing trace with hash -59343566, now seen corresponding path program 1 times [2025-03-14 01:02:54,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:02:54,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1109840723] [2025-03-14 01:02:54,836 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-14 01:02:54,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:02:54,841 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-03-14 01:02:54,846 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-03-14 01:02:54,847 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-14 01:02:54,847 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:02:54,931 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-14 01:02:54,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:02:54,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1109840723] [2025-03-14 01:02:54,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1109840723] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-14 01:02:54,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [840531770] [2025-03-14 01:02:54,932 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-14 01:02:54,932 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-14 01:02:54,932 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-14 01:02:54,934 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-14 01:02:54,935 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-03-14 01:02:54,974 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-03-14 01:02:54,989 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-03-14 01:02:54,989 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-14 01:02:54,989 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:02:54,990 INFO L256 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-03-14 01:02:54,991 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-14 01:02:55,061 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-14 01:02:55,061 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-14 01:02:55,120 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-14 01:02:55,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [840531770] provided 1 perfect and 1 imperfect interpolant sequences [2025-03-14 01:02:55,120 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-03-14 01:02:55,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 6] total 13 [2025-03-14 01:02:55,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509665093] [2025-03-14 01:02:55,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 01:02:55,121 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-14 01:02:55,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:02:55,121 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-14 01:02:55,122 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2025-03-14 01:02:55,128 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 34 [2025-03-14 01:02:55,128 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 57 transitions, 394 flow. Second operand has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:02:55,128 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:02:55,128 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 34 [2025-03-14 01:02:55,129 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:02:55,226 INFO L124 PetriNetUnfolderBase]: 329/570 cut-off events. [2025-03-14 01:02:55,226 INFO L125 PetriNetUnfolderBase]: For 1351/1363 co-relation queries the response was YES. [2025-03-14 01:02:55,227 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2318 conditions, 570 events. 329/570 cut-off events. For 1351/1363 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 2116 event pairs, 161 based on Foata normal form. 18/585 useless extension candidates. Maximal degree in co-relation 2295. Up to 392 conditions per place. [2025-03-14 01:02:55,229 INFO L140 encePairwiseOnDemand]: 25/34 looper letters, 47 selfloop transitions, 12 changer transitions 0/61 dead transitions. [2025-03-14 01:02:55,229 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 61 transitions, 517 flow [2025-03-14 01:02:55,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-14 01:02:55,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-03-14 01:02:55,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 70 transitions. [2025-03-14 01:02:55,230 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.29411764705882354 [2025-03-14 01:02:55,231 INFO L175 Difference]: Start difference. First operand has 69 places, 57 transitions, 394 flow. Second operand 7 states and 70 transitions. [2025-03-14 01:02:55,231 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 61 transitions, 517 flow [2025-03-14 01:02:55,233 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 61 transitions, 494 flow, removed 9 selfloop flow, removed 6 redundant places. [2025-03-14 01:02:55,234 INFO L231 Difference]: Finished difference. Result has 65 places, 49 transitions, 335 flow [2025-03-14 01:02:55,234 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=311, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=335, PETRI_PLACES=65, PETRI_TRANSITIONS=49} [2025-03-14 01:02:55,234 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 35 predicate places. [2025-03-14 01:02:55,235 INFO L471 AbstractCegarLoop]: Abstraction has has 65 places, 49 transitions, 335 flow [2025-03-14 01:02:55,235 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:02:55,235 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:02:55,235 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:02:55,241 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2025-03-14 01:02:55,439 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2025-03-14 01:02:55,439 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-14 01:02:55,439 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:02:55,439 INFO L85 PathProgramCache]: Analyzing trace with hash 564555842, now seen corresponding path program 1 times [2025-03-14 01:02:55,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:02:55,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2001726638] [2025-03-14 01:02:55,439 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-14 01:02:55,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:02:55,445 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 25 statements into 1 equivalence classes. [2025-03-14 01:02:55,488 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 25 of 25 statements. [2025-03-14 01:02:55,489 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-14 01:02:55,489 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:02:56,159 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-14 01:02:56,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:02:56,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2001726638] [2025-03-14 01:02:56,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2001726638] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-14 01:02:56,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [939697398] [2025-03-14 01:02:56,160 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-14 01:02:56,160 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-14 01:02:56,160 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-14 01:02:56,162 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-14 01:02:56,163 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-03-14 01:02:56,204 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 25 statements into 1 equivalence classes. [2025-03-14 01:02:56,223 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 25 of 25 statements. [2025-03-14 01:02:56,223 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-14 01:02:56,224 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:02:56,225 INFO L256 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 40 conjuncts are in the unsatisfiable core [2025-03-14 01:02:56,227 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-14 01:02:56,580 INFO L349 Elim1Store]: treesize reduction 3, result has 75.0 percent of original size [2025-03-14 01:02:56,580 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 83 treesize of output 52 [2025-03-14 01:02:56,657 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-14 01:02:56,657 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-14 01:02:57,035 INFO L349 Elim1Store]: treesize reduction 28, result has 59.4 percent of original size [2025-03-14 01:02:57,035 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 87 treesize of output 63 [2025-03-14 01:02:57,077 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-14 01:02:57,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [939697398] provided 1 perfect and 1 imperfect interpolant sequences [2025-03-14 01:02:57,078 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-03-14 01:02:57,078 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [13, 13] total 33 [2025-03-14 01:02:57,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693593078] [2025-03-14 01:02:57,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 01:02:57,078 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-14 01:02:57,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:02:57,078 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-14 01:02:57,079 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=944, Unknown=0, NotChecked=0, Total=1056 [2025-03-14 01:02:57,122 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 34 [2025-03-14 01:02:57,122 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 49 transitions, 335 flow. Second operand has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 9 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:02:57,122 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:02:57,122 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 34 [2025-03-14 01:02:57,123 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:02:57,866 INFO L124 PetriNetUnfolderBase]: 483/840 cut-off events. [2025-03-14 01:02:57,866 INFO L125 PetriNetUnfolderBase]: For 2070/2117 co-relation queries the response was YES. [2025-03-14 01:02:57,868 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3371 conditions, 840 events. 483/840 cut-off events. For 2070/2117 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 3652 event pairs, 65 based on Foata normal form. 5/840 useless extension candidates. Maximal degree in co-relation 3351. Up to 337 conditions per place. [2025-03-14 01:02:57,870 INFO L140 encePairwiseOnDemand]: 23/34 looper letters, 101 selfloop transitions, 32 changer transitions 10/146 dead transitions. [2025-03-14 01:02:57,870 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 146 transitions, 1139 flow [2025-03-14 01:02:57,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-03-14 01:02:57,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2025-03-14 01:02:57,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 196 transitions. [2025-03-14 01:02:57,871 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4117647058823529 [2025-03-14 01:02:57,871 INFO L175 Difference]: Start difference. First operand has 65 places, 49 transitions, 335 flow. Second operand 14 states and 196 transitions. [2025-03-14 01:02:57,871 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 146 transitions, 1139 flow [2025-03-14 01:02:57,875 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 146 transitions, 1119 flow, removed 0 selfloop flow, removed 5 redundant places. [2025-03-14 01:02:57,876 INFO L231 Difference]: Finished difference. Result has 82 places, 68 transitions, 621 flow [2025-03-14 01:02:57,876 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=319, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=621, PETRI_PLACES=82, PETRI_TRANSITIONS=68} [2025-03-14 01:02:57,876 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 52 predicate places. [2025-03-14 01:02:57,876 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 68 transitions, 621 flow [2025-03-14 01:02:57,876 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 9 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:02:57,876 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:02:57,876 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:02:57,883 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2025-03-14 01:02:58,077 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-14 01:02:58,077 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-14 01:02:58,077 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:02:58,077 INFO L85 PathProgramCache]: Analyzing trace with hash 1386061524, now seen corresponding path program 2 times [2025-03-14 01:02:58,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:02:58,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387173350] [2025-03-14 01:02:58,078 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-14 01:02:58,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:02:58,083 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 25 statements into 2 equivalence classes. [2025-03-14 01:02:58,098 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 23 of 25 statements. [2025-03-14 01:02:58,098 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-14 01:02:58,098 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:02:58,424 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-14 01:02:58,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:02:58,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387173350] [2025-03-14 01:02:58,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1387173350] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-14 01:02:58,425 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-14 01:02:58,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2025-03-14 01:02:58,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456016737] [2025-03-14 01:02:58,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 01:02:58,425 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-03-14 01:02:58,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:02:58,426 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-03-14 01:02:58,426 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2025-03-14 01:02:58,444 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 34 [2025-03-14 01:02:58,445 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 68 transitions, 621 flow. Second operand has 12 states, 12 states have (on average 7.0) internal successors, (84), 12 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:02:58,445 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:02:58,445 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 34 [2025-03-14 01:02:58,445 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:02:58,792 INFO L124 PetriNetUnfolderBase]: 572/995 cut-off events. [2025-03-14 01:02:58,792 INFO L125 PetriNetUnfolderBase]: For 5076/5097 co-relation queries the response was YES. [2025-03-14 01:02:58,794 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4795 conditions, 995 events. 572/995 cut-off events. For 5076/5097 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 4535 event pairs, 245 based on Foata normal form. 1/993 useless extension candidates. Maximal degree in co-relation 4766. Up to 664 conditions per place. [2025-03-14 01:02:58,796 INFO L140 encePairwiseOnDemand]: 22/34 looper letters, 80 selfloop transitions, 31 changer transitions 17/131 dead transitions. [2025-03-14 01:02:58,796 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 131 transitions, 1420 flow [2025-03-14 01:02:58,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-03-14 01:02:58,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2025-03-14 01:02:58,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 150 transitions. [2025-03-14 01:02:58,797 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3393665158371041 [2025-03-14 01:02:58,797 INFO L175 Difference]: Start difference. First operand has 82 places, 68 transitions, 621 flow. Second operand 13 states and 150 transitions. [2025-03-14 01:02:58,797 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 131 transitions, 1420 flow [2025-03-14 01:02:58,805 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 131 transitions, 1327 flow, removed 36 selfloop flow, removed 4 redundant places. [2025-03-14 01:02:58,807 INFO L231 Difference]: Finished difference. Result has 94 places, 89 transitions, 950 flow [2025-03-14 01:02:58,807 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=562, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=950, PETRI_PLACES=94, PETRI_TRANSITIONS=89} [2025-03-14 01:02:58,807 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 64 predicate places. [2025-03-14 01:02:58,807 INFO L471 AbstractCegarLoop]: Abstraction has has 94 places, 89 transitions, 950 flow [2025-03-14 01:02:58,807 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.0) internal successors, (84), 12 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:02:58,807 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:02:58,807 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:02:58,807 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2025-03-14 01:02:58,807 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-14 01:02:58,808 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:02:58,808 INFO L85 PathProgramCache]: Analyzing trace with hash 1667808228, now seen corresponding path program 3 times [2025-03-14 01:02:58,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:02:58,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605936155] [2025-03-14 01:02:58,808 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-14 01:02:58,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:02:58,814 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 25 statements into 2 equivalence classes. [2025-03-14 01:02:58,822 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 23 of 25 statements. [2025-03-14 01:02:58,823 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-03-14 01:02:58,823 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:02:59,170 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-14 01:02:59,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:02:59,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605936155] [2025-03-14 01:02:59,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [605936155] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-14 01:02:59,171 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-14 01:02:59,171 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2025-03-14 01:02:59,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540154756] [2025-03-14 01:02:59,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 01:02:59,171 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-03-14 01:02:59,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:02:59,172 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-03-14 01:02:59,172 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2025-03-14 01:02:59,187 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 34 [2025-03-14 01:02:59,188 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 89 transitions, 950 flow. Second operand has 12 states, 12 states have (on average 7.0) internal successors, (84), 12 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:02:59,188 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:02:59,188 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 34 [2025-03-14 01:02:59,188 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:02:59,661 INFO L124 PetriNetUnfolderBase]: 557/968 cut-off events. [2025-03-14 01:02:59,662 INFO L125 PetriNetUnfolderBase]: For 5358/5389 co-relation queries the response was YES. [2025-03-14 01:02:59,664 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4843 conditions, 968 events. 557/968 cut-off events. For 5358/5389 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 4400 event pairs, 181 based on Foata normal form. 5/971 useless extension candidates. Maximal degree in co-relation 4811. Up to 466 conditions per place. [2025-03-14 01:02:59,666 INFO L140 encePairwiseOnDemand]: 22/34 looper letters, 102 selfloop transitions, 27 changer transitions 18/150 dead transitions. [2025-03-14 01:02:59,666 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 150 transitions, 1590 flow [2025-03-14 01:02:59,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-03-14 01:02:59,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2025-03-14 01:02:59,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 171 transitions. [2025-03-14 01:02:59,667 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3352941176470588 [2025-03-14 01:02:59,667 INFO L175 Difference]: Start difference. First operand has 94 places, 89 transitions, 950 flow. Second operand 15 states and 171 transitions. [2025-03-14 01:02:59,667 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 150 transitions, 1590 flow [2025-03-14 01:02:59,676 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 150 transitions, 1479 flow, removed 54 selfloop flow, removed 3 redundant places. [2025-03-14 01:02:59,677 INFO L231 Difference]: Finished difference. Result has 106 places, 89 transitions, 924 flow [2025-03-14 01:02:59,678 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=861, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=924, PETRI_PLACES=106, PETRI_TRANSITIONS=89} [2025-03-14 01:02:59,678 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 76 predicate places. [2025-03-14 01:02:59,678 INFO L471 AbstractCegarLoop]: Abstraction has has 106 places, 89 transitions, 924 flow [2025-03-14 01:02:59,678 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.0) internal successors, (84), 12 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:02:59,678 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:02:59,678 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:02:59,678 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2025-03-14 01:02:59,678 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-14 01:02:59,679 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:02:59,679 INFO L85 PathProgramCache]: Analyzing trace with hash -528428934, now seen corresponding path program 4 times [2025-03-14 01:02:59,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:02:59,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [825290465] [2025-03-14 01:02:59,679 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-14 01:02:59,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:02:59,683 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 25 statements into 2 equivalence classes. [2025-03-14 01:02:59,694 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 25 of 25 statements. [2025-03-14 01:02:59,694 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-14 01:02:59,694 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:02:59,958 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-14 01:02:59,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:02:59,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [825290465] [2025-03-14 01:02:59,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [825290465] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-14 01:02:59,959 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-14 01:02:59,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-03-14 01:02:59,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954317986] [2025-03-14 01:02:59,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 01:02:59,959 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-14 01:02:59,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:02:59,959 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-14 01:02:59,960 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2025-03-14 01:02:59,978 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 34 [2025-03-14 01:02:59,978 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 89 transitions, 924 flow. Second operand has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 9 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:02:59,979 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:02:59,979 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 34 [2025-03-14 01:02:59,979 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:03:00,313 INFO L124 PetriNetUnfolderBase]: 576/1003 cut-off events. [2025-03-14 01:03:00,313 INFO L125 PetriNetUnfolderBase]: For 5778/5809 co-relation queries the response was YES. [2025-03-14 01:03:00,316 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5195 conditions, 1003 events. 576/1003 cut-off events. For 5778/5809 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 4611 event pairs, 237 based on Foata normal form. 1/1002 useless extension candidates. Maximal degree in co-relation 5159. Up to 678 conditions per place. [2025-03-14 01:03:00,319 INFO L140 encePairwiseOnDemand]: 24/34 looper letters, 80 selfloop transitions, 42 changer transitions 17/142 dead transitions. [2025-03-14 01:03:00,320 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 142 transitions, 1689 flow [2025-03-14 01:03:00,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-03-14 01:03:00,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2025-03-14 01:03:00,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 136 transitions. [2025-03-14 01:03:00,321 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.36363636363636365 [2025-03-14 01:03:00,321 INFO L175 Difference]: Start difference. First operand has 106 places, 89 transitions, 924 flow. Second operand 11 states and 136 transitions. [2025-03-14 01:03:00,321 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 142 transitions, 1689 flow [2025-03-14 01:03:00,331 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 142 transitions, 1584 flow, removed 18 selfloop flow, removed 8 redundant places. [2025-03-14 01:03:00,333 INFO L231 Difference]: Finished difference. Result has 110 places, 105 transitions, 1207 flow [2025-03-14 01:03:00,333 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=859, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1207, PETRI_PLACES=110, PETRI_TRANSITIONS=105} [2025-03-14 01:03:00,333 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 80 predicate places. [2025-03-14 01:03:00,333 INFO L471 AbstractCegarLoop]: Abstraction has has 110 places, 105 transitions, 1207 flow [2025-03-14 01:03:00,333 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 9 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:03:00,333 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:03:00,334 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:03:00,334 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2025-03-14 01:03:00,334 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-14 01:03:00,334 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:03:00,334 INFO L85 PathProgramCache]: Analyzing trace with hash -1627444338, now seen corresponding path program 5 times [2025-03-14 01:03:00,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:03:00,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110211159] [2025-03-14 01:03:00,334 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-14 01:03:00,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:03:00,341 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 25 statements into 2 equivalence classes. [2025-03-14 01:03:00,352 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 25 of 25 statements. [2025-03-14 01:03:00,353 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-14 01:03:00,353 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:03:00,944 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-14 01:03:00,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:03:00,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110211159] [2025-03-14 01:03:00,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2110211159] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-14 01:03:00,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [863614365] [2025-03-14 01:03:00,944 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-14 01:03:00,945 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-14 01:03:00,945 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-14 01:03:00,947 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-14 01:03:00,948 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-03-14 01:03:00,993 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 25 statements into 2 equivalence classes. [2025-03-14 01:03:01,011 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 25 of 25 statements. [2025-03-14 01:03:01,011 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-14 01:03:01,011 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:03:01,012 INFO L256 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 50 conjuncts are in the unsatisfiable core [2025-03-14 01:03:01,014 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-14 01:03:01,493 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2025-03-14 01:03:01,493 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 83 treesize of output 47 [2025-03-14 01:03:01,554 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-14 01:03:01,554 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-14 01:03:01,901 INFO L349 Elim1Store]: treesize reduction 28, result has 59.4 percent of original size [2025-03-14 01:03:01,901 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 87 treesize of output 63 [2025-03-14 01:03:01,945 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-14 01:03:01,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [863614365] provided 1 perfect and 1 imperfect interpolant sequences [2025-03-14 01:03:01,947 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-03-14 01:03:01,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [13, 13] total 33 [2025-03-14 01:03:01,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413858140] [2025-03-14 01:03:01,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 01:03:01,948 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-14 01:03:01,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:03:01,948 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-14 01:03:01,948 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=930, Unknown=0, NotChecked=0, Total=1056 [2025-03-14 01:03:01,998 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 34 [2025-03-14 01:03:01,998 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 105 transitions, 1207 flow. Second operand has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 9 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:03:01,998 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:03:01,998 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 34 [2025-03-14 01:03:01,998 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:03:02,743 INFO L124 PetriNetUnfolderBase]: 581/1004 cut-off events. [2025-03-14 01:03:02,743 INFO L125 PetriNetUnfolderBase]: For 6560/6615 co-relation queries the response was YES. [2025-03-14 01:03:02,746 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5436 conditions, 1004 events. 581/1004 cut-off events. For 6560/6615 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 4550 event pairs, 82 based on Foata normal form. 9/1010 useless extension candidates. Maximal degree in co-relation 5395. Up to 563 conditions per place. [2025-03-14 01:03:02,748 INFO L140 encePairwiseOnDemand]: 23/34 looper letters, 102 selfloop transitions, 58 changer transitions 11/174 dead transitions. [2025-03-14 01:03:02,748 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 174 transitions, 2070 flow [2025-03-14 01:03:02,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-03-14 01:03:02,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2025-03-14 01:03:02,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 196 transitions. [2025-03-14 01:03:02,749 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3843137254901961 [2025-03-14 01:03:02,749 INFO L175 Difference]: Start difference. First operand has 110 places, 105 transitions, 1207 flow. Second operand 15 states and 196 transitions. [2025-03-14 01:03:02,749 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 174 transitions, 2070 flow [2025-03-14 01:03:02,761 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 174 transitions, 1962 flow, removed 30 selfloop flow, removed 4 redundant places. [2025-03-14 01:03:02,763 INFO L231 Difference]: Finished difference. Result has 121 places, 115 transitions, 1452 flow [2025-03-14 01:03:02,763 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=1135, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1452, PETRI_PLACES=121, PETRI_TRANSITIONS=115} [2025-03-14 01:03:02,763 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 91 predicate places. [2025-03-14 01:03:02,763 INFO L471 AbstractCegarLoop]: Abstraction has has 121 places, 115 transitions, 1452 flow [2025-03-14 01:03:02,763 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 9 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:03:02,763 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:03:02,763 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:03:02,769 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2025-03-14 01:03:02,964 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2025-03-14 01:03:02,964 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-14 01:03:02,964 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:03:02,964 INFO L85 PathProgramCache]: Analyzing trace with hash -1740241814, now seen corresponding path program 6 times [2025-03-14 01:03:02,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:03:02,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410533662] [2025-03-14 01:03:02,965 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-14 01:03:02,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:03:02,969 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 25 statements into 2 equivalence classes. [2025-03-14 01:03:02,983 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) and asserted 23 of 25 statements. [2025-03-14 01:03:02,984 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2025-03-14 01:03:02,984 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:03:03,289 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-14 01:03:03,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:03:03,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1410533662] [2025-03-14 01:03:03,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1410533662] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-14 01:03:03,289 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-14 01:03:03,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2025-03-14 01:03:03,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694379294] [2025-03-14 01:03:03,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 01:03:03,290 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-03-14 01:03:03,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:03:03,290 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-03-14 01:03:03,290 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2025-03-14 01:03:03,312 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 34 [2025-03-14 01:03:03,312 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 115 transitions, 1452 flow. Second operand has 12 states, 12 states have (on average 7.0) internal successors, (84), 12 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:03:03,313 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:03:03,313 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 34 [2025-03-14 01:03:03,313 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:03:03,650 INFO L124 PetriNetUnfolderBase]: 585/1025 cut-off events. [2025-03-14 01:03:03,651 INFO L125 PetriNetUnfolderBase]: For 6923/6958 co-relation queries the response was YES. [2025-03-14 01:03:03,655 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5614 conditions, 1025 events. 585/1025 cut-off events. For 6923/6958 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 4805 event pairs, 242 based on Foata normal form. 1/1023 useless extension candidates. Maximal degree in co-relation 5570. Up to 701 conditions per place. [2025-03-14 01:03:03,657 INFO L140 encePairwiseOnDemand]: 22/34 looper letters, 80 selfloop transitions, 45 changer transitions 18/146 dead transitions. [2025-03-14 01:03:03,658 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 146 transitions, 1965 flow [2025-03-14 01:03:03,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-03-14 01:03:03,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2025-03-14 01:03:03,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 137 transitions. [2025-03-14 01:03:03,659 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.33578431372549017 [2025-03-14 01:03:03,659 INFO L175 Difference]: Start difference. First operand has 121 places, 115 transitions, 1452 flow. Second operand 12 states and 137 transitions. [2025-03-14 01:03:03,659 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 146 transitions, 1965 flow [2025-03-14 01:03:03,675 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 146 transitions, 1823 flow, removed 32 selfloop flow, removed 8 redundant places. [2025-03-14 01:03:03,678 INFO L231 Difference]: Finished difference. Result has 125 places, 112 transitions, 1404 flow [2025-03-14 01:03:03,678 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=1319, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1404, PETRI_PLACES=125, PETRI_TRANSITIONS=112} [2025-03-14 01:03:03,679 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 95 predicate places. [2025-03-14 01:03:03,679 INFO L471 AbstractCegarLoop]: Abstraction has has 125 places, 112 transitions, 1404 flow [2025-03-14 01:03:03,679 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.0) internal successors, (84), 12 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:03:03,679 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:03:03,679 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:03:03,680 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2025-03-14 01:03:03,680 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-14 01:03:03,680 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:03:03,680 INFO L85 PathProgramCache]: Analyzing trace with hash 353413426, now seen corresponding path program 7 times [2025-03-14 01:03:03,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:03:03,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [489668305] [2025-03-14 01:03:03,680 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-14 01:03:03,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:03:03,685 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 25 statements into 1 equivalence classes. [2025-03-14 01:03:03,696 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 25 of 25 statements. [2025-03-14 01:03:03,696 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-14 01:03:03,696 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:03:04,167 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-14 01:03:04,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:03:04,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [489668305] [2025-03-14 01:03:04,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [489668305] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-14 01:03:04,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1899994026] [2025-03-14 01:03:04,167 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-14 01:03:04,167 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-14 01:03:04,167 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-14 01:03:04,169 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-14 01:03:04,171 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2025-03-14 01:03:04,212 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 25 statements into 1 equivalence classes. [2025-03-14 01:03:04,230 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 25 of 25 statements. [2025-03-14 01:03:04,230 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-14 01:03:04,230 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:03:04,231 INFO L256 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 40 conjuncts are in the unsatisfiable core [2025-03-14 01:03:04,233 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-14 01:03:04,468 INFO L349 Elim1Store]: treesize reduction 3, result has 75.0 percent of original size [2025-03-14 01:03:04,469 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 83 treesize of output 52 [2025-03-14 01:03:04,581 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-14 01:03:04,581 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-14 01:03:05,029 INFO L349 Elim1Store]: treesize reduction 28, result has 59.4 percent of original size [2025-03-14 01:03:05,029 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 87 treesize of output 63 [2025-03-14 01:03:05,069 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-14 01:03:05,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1899994026] provided 1 perfect and 1 imperfect interpolant sequences [2025-03-14 01:03:05,069 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-03-14 01:03:05,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [13, 13] total 33 [2025-03-14 01:03:05,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299863052] [2025-03-14 01:03:05,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 01:03:05,070 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-14 01:03:05,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:03:05,070 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-14 01:03:05,070 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=937, Unknown=0, NotChecked=0, Total=1056 [2025-03-14 01:03:05,122 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 34 [2025-03-14 01:03:05,123 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 112 transitions, 1404 flow. Second operand has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 9 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:03:05,123 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:03:05,123 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 34 [2025-03-14 01:03:05,123 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:03:05,818 INFO L124 PetriNetUnfolderBase]: 557/969 cut-off events. [2025-03-14 01:03:05,818 INFO L125 PetriNetUnfolderBase]: For 6367/6422 co-relation queries the response was YES. [2025-03-14 01:03:05,836 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5233 conditions, 969 events. 557/969 cut-off events. For 6367/6422 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 4400 event pairs, 85 based on Foata normal form. 9/976 useless extension candidates. Maximal degree in co-relation 5189. Up to 546 conditions per place. [2025-03-14 01:03:05,838 INFO L140 encePairwiseOnDemand]: 23/34 looper letters, 96 selfloop transitions, 55 changer transitions 11/165 dead transitions. [2025-03-14 01:03:05,838 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 165 transitions, 2015 flow [2025-03-14 01:03:05,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-03-14 01:03:05,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2025-03-14 01:03:05,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 182 transitions. [2025-03-14 01:03:05,841 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.38235294117647056 [2025-03-14 01:03:05,841 INFO L175 Difference]: Start difference. First operand has 125 places, 112 transitions, 1404 flow. Second operand 14 states and 182 transitions. [2025-03-14 01:03:05,841 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 165 transitions, 2015 flow [2025-03-14 01:03:05,855 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 165 transitions, 1965 flow, removed 5 selfloop flow, removed 5 redundant places. [2025-03-14 01:03:05,857 INFO L231 Difference]: Finished difference. Result has 131 places, 109 transitions, 1430 flow [2025-03-14 01:03:05,857 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=1358, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1430, PETRI_PLACES=131, PETRI_TRANSITIONS=109} [2025-03-14 01:03:05,857 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 101 predicate places. [2025-03-14 01:03:05,857 INFO L471 AbstractCegarLoop]: Abstraction has has 131 places, 109 transitions, 1430 flow [2025-03-14 01:03:05,858 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 9 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:03:05,858 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:03:05,858 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:03:05,864 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2025-03-14 01:03:06,058 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2025-03-14 01:03:06,059 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-14 01:03:06,059 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:03:06,059 INFO L85 PathProgramCache]: Analyzing trace with hash 1064751226, now seen corresponding path program 8 times [2025-03-14 01:03:06,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:03:06,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971677844] [2025-03-14 01:03:06,059 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-14 01:03:06,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:03:06,064 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 25 statements into 2 equivalence classes. [2025-03-14 01:03:06,072 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 23 of 25 statements. [2025-03-14 01:03:06,072 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-14 01:03:06,072 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:03:06,356 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-14 01:03:06,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:03:06,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971677844] [2025-03-14 01:03:06,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1971677844] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-14 01:03:06,356 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-14 01:03:06,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2025-03-14 01:03:06,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933132718] [2025-03-14 01:03:06,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 01:03:06,356 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-03-14 01:03:06,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:03:06,356 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-03-14 01:03:06,357 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2025-03-14 01:03:06,370 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 34 [2025-03-14 01:03:06,370 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 109 transitions, 1430 flow. Second operand has 12 states, 12 states have (on average 7.0) internal successors, (84), 12 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:03:06,370 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:03:06,370 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 34 [2025-03-14 01:03:06,370 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:03:06,766 INFO L124 PetriNetUnfolderBase]: 726/1240 cut-off events. [2025-03-14 01:03:06,766 INFO L125 PetriNetUnfolderBase]: For 10249/10287 co-relation queries the response was YES. [2025-03-14 01:03:06,769 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7234 conditions, 1240 events. 726/1240 cut-off events. For 10249/10287 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 5845 event pairs, 236 based on Foata normal form. 1/1240 useless extension candidates. Maximal degree in co-relation 7190. Up to 748 conditions per place. [2025-03-14 01:03:06,773 INFO L140 encePairwiseOnDemand]: 22/34 looper letters, 123 selfloop transitions, 57 changer transitions 15/198 dead transitions. [2025-03-14 01:03:06,773 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 198 transitions, 2789 flow [2025-03-14 01:03:06,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-03-14 01:03:06,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2025-03-14 01:03:06,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 164 transitions. [2025-03-14 01:03:06,774 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3215686274509804 [2025-03-14 01:03:06,774 INFO L175 Difference]: Start difference. First operand has 131 places, 109 transitions, 1430 flow. Second operand 15 states and 164 transitions. [2025-03-14 01:03:06,774 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 198 transitions, 2789 flow [2025-03-14 01:03:06,791 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 198 transitions, 2609 flow, removed 1 selfloop flow, removed 11 redundant places. [2025-03-14 01:03:06,793 INFO L231 Difference]: Finished difference. Result has 137 places, 134 transitions, 1904 flow [2025-03-14 01:03:06,793 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=1318, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1904, PETRI_PLACES=137, PETRI_TRANSITIONS=134} [2025-03-14 01:03:06,794 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 107 predicate places. [2025-03-14 01:03:06,794 INFO L471 AbstractCegarLoop]: Abstraction has has 137 places, 134 transitions, 1904 flow [2025-03-14 01:03:06,794 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.0) internal successors, (84), 12 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:03:06,794 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:03:06,794 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:03:06,794 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2025-03-14 01:03:06,794 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-14 01:03:06,795 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:03:06,795 INFO L85 PathProgramCache]: Analyzing trace with hash 204065804, now seen corresponding path program 9 times [2025-03-14 01:03:06,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:03:06,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733483572] [2025-03-14 01:03:06,795 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-14 01:03:06,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:03:06,801 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 25 statements into 2 equivalence classes. [2025-03-14 01:03:06,812 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 23 of 25 statements. [2025-03-14 01:03:06,813 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-03-14 01:03:06,813 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:03:07,068 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-14 01:03:07,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:03:07,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1733483572] [2025-03-14 01:03:07,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1733483572] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-14 01:03:07,069 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-14 01:03:07,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2025-03-14 01:03:07,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634376769] [2025-03-14 01:03:07,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 01:03:07,069 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-03-14 01:03:07,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:03:07,069 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-03-14 01:03:07,069 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2025-03-14 01:03:07,081 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 34 [2025-03-14 01:03:07,081 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 134 transitions, 1904 flow. Second operand has 12 states, 12 states have (on average 7.0) internal successors, (84), 12 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:03:07,081 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:03:07,081 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 34 [2025-03-14 01:03:07,081 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:03:07,540 INFO L124 PetriNetUnfolderBase]: 719/1233 cut-off events. [2025-03-14 01:03:07,540 INFO L125 PetriNetUnfolderBase]: For 11885/11923 co-relation queries the response was YES. [2025-03-14 01:03:07,546 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7587 conditions, 1233 events. 719/1233 cut-off events. For 11885/11923 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 5798 event pairs, 245 based on Foata normal form. 1/1234 useless extension candidates. Maximal degree in co-relation 7536. Up to 748 conditions per place. [2025-03-14 01:03:07,550 INFO L140 encePairwiseOnDemand]: 22/34 looper letters, 113 selfloop transitions, 59 changer transitions 15/190 dead transitions. [2025-03-14 01:03:07,550 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 190 transitions, 2851 flow [2025-03-14 01:03:07,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-03-14 01:03:07,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2025-03-14 01:03:07,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 139 transitions. [2025-03-14 01:03:07,551 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.34068627450980393 [2025-03-14 01:03:07,551 INFO L175 Difference]: Start difference. First operand has 137 places, 134 transitions, 1904 flow. Second operand 12 states and 139 transitions. [2025-03-14 01:03:07,551 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 190 transitions, 2851 flow [2025-03-14 01:03:07,587 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 190 transitions, 2734 flow, removed 57 selfloop flow, removed 4 redundant places. [2025-03-14 01:03:07,590 INFO L231 Difference]: Finished difference. Result has 148 places, 151 transitions, 2281 flow [2025-03-14 01:03:07,590 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=1813, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2281, PETRI_PLACES=148, PETRI_TRANSITIONS=151} [2025-03-14 01:03:07,591 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 118 predicate places. [2025-03-14 01:03:07,591 INFO L471 AbstractCegarLoop]: Abstraction has has 148 places, 151 transitions, 2281 flow [2025-03-14 01:03:07,591 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.0) internal successors, (84), 12 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:03:07,591 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:03:07,591 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:03:07,591 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2025-03-14 01:03:07,591 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-14 01:03:07,592 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:03:07,592 INFO L85 PathProgramCache]: Analyzing trace with hash 1424781892, now seen corresponding path program 10 times [2025-03-14 01:03:07,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:03:07,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414498903] [2025-03-14 01:03:07,592 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-14 01:03:07,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:03:07,599 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 25 statements into 2 equivalence classes. [2025-03-14 01:03:07,606 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 25 of 25 statements. [2025-03-14 01:03:07,606 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-14 01:03:07,607 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:03:07,888 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-14 01:03:07,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:03:07,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414498903] [2025-03-14 01:03:07,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [414498903] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-14 01:03:07,888 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-14 01:03:07,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-03-14 01:03:07,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970272275] [2025-03-14 01:03:07,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 01:03:07,889 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-14 01:03:07,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:03:07,889 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-14 01:03:07,889 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2025-03-14 01:03:07,903 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 34 [2025-03-14 01:03:07,903 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 151 transitions, 2281 flow. Second operand has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 9 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:03:07,904 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:03:07,904 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 34 [2025-03-14 01:03:07,904 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:03:08,406 INFO L124 PetriNetUnfolderBase]: 791/1388 cut-off events. [2025-03-14 01:03:08,406 INFO L125 PetriNetUnfolderBase]: For 13578/13620 co-relation queries the response was YES. [2025-03-14 01:03:08,435 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8497 conditions, 1388 events. 791/1388 cut-off events. For 13578/13620 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 6889 event pairs, 249 based on Foata normal form. 1/1389 useless extension candidates. Maximal degree in co-relation 8441. Up to 691 conditions per place. [2025-03-14 01:03:08,438 INFO L140 encePairwiseOnDemand]: 24/34 looper letters, 136 selfloop transitions, 60 changer transitions 17/216 dead transitions. [2025-03-14 01:03:08,438 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 216 transitions, 3275 flow [2025-03-14 01:03:08,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-03-14 01:03:08,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2025-03-14 01:03:08,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 155 transitions. [2025-03-14 01:03:08,438 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3506787330316742 [2025-03-14 01:03:08,439 INFO L175 Difference]: Start difference. First operand has 148 places, 151 transitions, 2281 flow. Second operand 13 states and 155 transitions. [2025-03-14 01:03:08,439 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 216 transitions, 3275 flow [2025-03-14 01:03:08,470 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 216 transitions, 3037 flow, removed 69 selfloop flow, removed 6 redundant places. [2025-03-14 01:03:08,472 INFO L231 Difference]: Finished difference. Result has 159 places, 158 transitions, 2371 flow [2025-03-14 01:03:08,472 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=2109, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2371, PETRI_PLACES=159, PETRI_TRANSITIONS=158} [2025-03-14 01:03:08,473 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 129 predicate places. [2025-03-14 01:03:08,473 INFO L471 AbstractCegarLoop]: Abstraction has has 159 places, 158 transitions, 2371 flow [2025-03-14 01:03:08,473 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 9 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:03:08,473 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:03:08,473 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:03:08,473 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2025-03-14 01:03:08,473 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-14 01:03:08,473 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:03:08,474 INFO L85 PathProgramCache]: Analyzing trace with hash -612099310, now seen corresponding path program 11 times [2025-03-14 01:03:08,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:03:08,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611311485] [2025-03-14 01:03:08,474 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-14 01:03:08,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:03:08,478 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 25 statements into 2 equivalence classes. [2025-03-14 01:03:08,492 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 25 of 25 statements. [2025-03-14 01:03:08,495 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-14 01:03:08,495 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:03:09,032 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-14 01:03:09,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:03:09,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611311485] [2025-03-14 01:03:09,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1611311485] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-14 01:03:09,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [214223870] [2025-03-14 01:03:09,032 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-14 01:03:09,032 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-14 01:03:09,032 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-14 01:03:09,034 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-14 01:03:09,035 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2025-03-14 01:03:09,081 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 25 statements into 2 equivalence classes. [2025-03-14 01:03:09,102 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 25 of 25 statements. [2025-03-14 01:03:09,102 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-14 01:03:09,102 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:03:09,104 INFO L256 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 40 conjuncts are in the unsatisfiable core [2025-03-14 01:03:09,105 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-14 01:03:09,345 INFO L349 Elim1Store]: treesize reduction 3, result has 75.0 percent of original size [2025-03-14 01:03:09,345 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 83 treesize of output 52 [2025-03-14 01:03:09,454 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-14 01:03:09,454 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-14 01:03:09,825 INFO L349 Elim1Store]: treesize reduction 28, result has 63.6 percent of original size [2025-03-14 01:03:09,825 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 103 treesize of output 71 [2025-03-14 01:03:09,881 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-14 01:03:09,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [214223870] provided 1 perfect and 1 imperfect interpolant sequences [2025-03-14 01:03:09,882 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-03-14 01:03:09,882 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [13, 13] total 33 [2025-03-14 01:03:09,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465394978] [2025-03-14 01:03:09,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 01:03:09,882 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-14 01:03:09,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:03:09,882 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-14 01:03:09,882 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=939, Unknown=0, NotChecked=0, Total=1056 [2025-03-14 01:03:09,921 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 34 [2025-03-14 01:03:09,922 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 158 transitions, 2371 flow. Second operand has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 9 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:03:09,922 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:03:09,922 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 34 [2025-03-14 01:03:09,922 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:03:10,747 INFO L124 PetriNetUnfolderBase]: 820/1439 cut-off events. [2025-03-14 01:03:10,747 INFO L125 PetriNetUnfolderBase]: For 14316/14378 co-relation queries the response was YES. [2025-03-14 01:03:10,753 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8715 conditions, 1439 events. 820/1439 cut-off events. For 14316/14378 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 7193 event pairs, 123 based on Foata normal form. 5/1443 useless extension candidates. Maximal degree in co-relation 8654. Up to 744 conditions per place. [2025-03-14 01:03:10,758 INFO L140 encePairwiseOnDemand]: 23/34 looper letters, 108 selfloop transitions, 98 changer transitions 20/229 dead transitions. [2025-03-14 01:03:10,758 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 229 transitions, 3401 flow [2025-03-14 01:03:10,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2025-03-14 01:03:10,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2025-03-14 01:03:10,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 203 transitions. [2025-03-14 01:03:10,759 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.35121107266435986 [2025-03-14 01:03:10,759 INFO L175 Difference]: Start difference. First operand has 159 places, 158 transitions, 2371 flow. Second operand 17 states and 203 transitions. [2025-03-14 01:03:10,759 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 229 transitions, 3401 flow [2025-03-14 01:03:10,795 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 229 transitions, 3296 flow, removed 16 selfloop flow, removed 5 redundant places. [2025-03-14 01:03:10,798 INFO L231 Difference]: Finished difference. Result has 171 places, 169 transitions, 2693 flow [2025-03-14 01:03:10,798 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=2278, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=2693, PETRI_PLACES=171, PETRI_TRANSITIONS=169} [2025-03-14 01:03:10,798 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 141 predicate places. [2025-03-14 01:03:10,798 INFO L471 AbstractCegarLoop]: Abstraction has has 171 places, 169 transitions, 2693 flow [2025-03-14 01:03:10,798 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 9 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:03:10,798 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:03:10,798 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:03:10,805 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2025-03-14 01:03:10,999 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2025-03-14 01:03:10,999 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-14 01:03:11,000 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:03:11,000 INFO L85 PathProgramCache]: Analyzing trace with hash 2136905218, now seen corresponding path program 12 times [2025-03-14 01:03:11,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:03:11,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063262595] [2025-03-14 01:03:11,000 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-14 01:03:11,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:03:11,007 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 25 statements into 2 equivalence classes. [2025-03-14 01:03:11,013 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) and asserted 23 of 25 statements. [2025-03-14 01:03:11,013 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2025-03-14 01:03:11,013 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:03:11,359 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-14 01:03:11,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:03:11,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063262595] [2025-03-14 01:03:11,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2063262595] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-14 01:03:11,360 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-14 01:03:11,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2025-03-14 01:03:11,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218647737] [2025-03-14 01:03:11,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 01:03:11,360 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-03-14 01:03:11,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:03:11,360 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-03-14 01:03:11,360 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2025-03-14 01:03:11,385 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 34 [2025-03-14 01:03:11,385 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 169 transitions, 2693 flow. Second operand has 12 states, 12 states have (on average 7.0) internal successors, (84), 12 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:03:11,385 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:03:11,385 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 34 [2025-03-14 01:03:11,385 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:03:11,851 INFO L124 PetriNetUnfolderBase]: 796/1397 cut-off events. [2025-03-14 01:03:11,851 INFO L125 PetriNetUnfolderBase]: For 13952/14014 co-relation queries the response was YES. [2025-03-14 01:03:11,855 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8686 conditions, 1397 events. 796/1397 cut-off events. For 13952/14014 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 6924 event pairs, 297 based on Foata normal form. 1/1397 useless extension candidates. Maximal degree in co-relation 8623. Up to 884 conditions per place. [2025-03-14 01:03:11,858 INFO L140 encePairwiseOnDemand]: 22/34 looper letters, 119 selfloop transitions, 72 changer transitions 11/205 dead transitions. [2025-03-14 01:03:11,858 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 205 transitions, 3327 flow [2025-03-14 01:03:11,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-03-14 01:03:11,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2025-03-14 01:03:11,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 152 transitions. [2025-03-14 01:03:11,859 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.31932773109243695 [2025-03-14 01:03:11,859 INFO L175 Difference]: Start difference. First operand has 171 places, 169 transitions, 2693 flow. Second operand 14 states and 152 transitions. [2025-03-14 01:03:11,859 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 205 transitions, 3327 flow [2025-03-14 01:03:11,894 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 205 transitions, 3232 flow, removed 32 selfloop flow, removed 4 redundant places. [2025-03-14 01:03:11,896 INFO L231 Difference]: Finished difference. Result has 180 places, 170 transitions, 2792 flow [2025-03-14 01:03:11,897 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=2600, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=2792, PETRI_PLACES=180, PETRI_TRANSITIONS=170} [2025-03-14 01:03:11,897 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 150 predicate places. [2025-03-14 01:03:11,897 INFO L471 AbstractCegarLoop]: Abstraction has has 180 places, 170 transitions, 2792 flow [2025-03-14 01:03:11,897 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.0) internal successors, (84), 12 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:03:11,897 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:03:11,897 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:03:11,897 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2025-03-14 01:03:11,897 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-14 01:03:11,898 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:03:11,898 INFO L85 PathProgramCache]: Analyzing trace with hash -1592063144, now seen corresponding path program 13 times [2025-03-14 01:03:11,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:03:11,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945868151] [2025-03-14 01:03:11,898 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-14 01:03:11,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:03:11,903 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 25 statements into 1 equivalence classes. [2025-03-14 01:03:11,911 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 25 of 25 statements. [2025-03-14 01:03:11,912 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-14 01:03:11,912 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:03:12,509 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-14 01:03:12,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:03:12,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945868151] [2025-03-14 01:03:12,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [945868151] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-14 01:03:12,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1314631517] [2025-03-14 01:03:12,510 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-14 01:03:12,510 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-14 01:03:12,510 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-14 01:03:12,511 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-14 01:03:12,512 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2025-03-14 01:03:12,559 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 25 statements into 1 equivalence classes. [2025-03-14 01:03:12,577 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 25 of 25 statements. [2025-03-14 01:03:12,577 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-14 01:03:12,577 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:03:12,578 INFO L256 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 40 conjuncts are in the unsatisfiable core [2025-03-14 01:03:12,580 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-14 01:03:12,875 INFO L349 Elim1Store]: treesize reduction 3, result has 75.0 percent of original size [2025-03-14 01:03:12,876 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 83 treesize of output 52 [2025-03-14 01:03:12,947 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-14 01:03:12,947 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-14 01:03:13,241 INFO L349 Elim1Store]: treesize reduction 28, result has 63.6 percent of original size [2025-03-14 01:03:13,241 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 103 treesize of output 71 [2025-03-14 01:03:13,291 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-14 01:03:13,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1314631517] provided 1 perfect and 1 imperfect interpolant sequences [2025-03-14 01:03:13,291 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-03-14 01:03:13,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [13, 13] total 33 [2025-03-14 01:03:13,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271477688] [2025-03-14 01:03:13,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 01:03:13,292 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-14 01:03:13,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:03:13,292 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-14 01:03:13,293 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=945, Unknown=0, NotChecked=0, Total=1056 [2025-03-14 01:03:13,329 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 34 [2025-03-14 01:03:13,330 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 170 transitions, 2792 flow. Second operand has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 9 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:03:13,330 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:03:13,330 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 34 [2025-03-14 01:03:13,330 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:03:13,919 INFO L124 PetriNetUnfolderBase]: 779/1363 cut-off events. [2025-03-14 01:03:13,920 INFO L125 PetriNetUnfolderBase]: For 14314/14376 co-relation queries the response was YES. [2025-03-14 01:03:13,924 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8605 conditions, 1363 events. 779/1363 cut-off events. For 14314/14376 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 6680 event pairs, 117 based on Foata normal form. 5/1368 useless extension candidates. Maximal degree in co-relation 8540. Up to 728 conditions per place. [2025-03-14 01:03:13,927 INFO L140 encePairwiseOnDemand]: 23/34 looper letters, 102 selfloop transitions, 95 changer transitions 9/209 dead transitions. [2025-03-14 01:03:13,927 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 209 transitions, 3401 flow [2025-03-14 01:03:13,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-03-14 01:03:13,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2025-03-14 01:03:13,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 166 transitions. [2025-03-14 01:03:13,928 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3755656108597285 [2025-03-14 01:03:13,928 INFO L175 Difference]: Start difference. First operand has 180 places, 170 transitions, 2792 flow. Second operand 13 states and 166 transitions. [2025-03-14 01:03:13,928 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 209 transitions, 3401 flow [2025-03-14 01:03:13,969 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 209 transitions, 3274 flow, removed 16 selfloop flow, removed 10 redundant places. [2025-03-14 01:03:13,972 INFO L231 Difference]: Finished difference. Result has 181 places, 168 transitions, 2825 flow [2025-03-14 01:03:13,974 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=2665, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2825, PETRI_PLACES=181, PETRI_TRANSITIONS=168} [2025-03-14 01:03:13,974 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 151 predicate places. [2025-03-14 01:03:13,974 INFO L471 AbstractCegarLoop]: Abstraction has has 181 places, 168 transitions, 2825 flow [2025-03-14 01:03:13,975 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 9 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:03:13,975 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:03:13,975 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:03:13,981 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2025-03-14 01:03:14,175 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2025-03-14 01:03:14,175 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-14 01:03:14,176 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:03:14,176 INFO L85 PathProgramCache]: Analyzing trace with hash -948694250, now seen corresponding path program 14 times [2025-03-14 01:03:14,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:03:14,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049930952] [2025-03-14 01:03:14,176 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-14 01:03:14,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:03:14,180 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 25 statements into 2 equivalence classes. [2025-03-14 01:03:14,184 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 23 of 25 statements. [2025-03-14 01:03:14,184 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-14 01:03:14,184 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:03:14,457 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-14 01:03:14,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:03:14,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049930952] [2025-03-14 01:03:14,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1049930952] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-14 01:03:14,458 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-14 01:03:14,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2025-03-14 01:03:14,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562532057] [2025-03-14 01:03:14,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 01:03:14,458 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-03-14 01:03:14,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:03:14,458 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-03-14 01:03:14,458 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2025-03-14 01:03:14,472 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 34 [2025-03-14 01:03:14,473 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 168 transitions, 2825 flow. Second operand has 12 states, 12 states have (on average 7.0) internal successors, (84), 12 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:03:14,473 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:03:14,473 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 34 [2025-03-14 01:03:14,473 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:03:14,869 INFO L124 PetriNetUnfolderBase]: 766/1333 cut-off events. [2025-03-14 01:03:14,869 INFO L125 PetriNetUnfolderBase]: For 14331/14393 co-relation queries the response was YES. [2025-03-14 01:03:14,875 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8559 conditions, 1333 events. 766/1333 cut-off events. For 14331/14393 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 6482 event pairs, 281 based on Foata normal form. 1/1333 useless extension candidates. Maximal degree in co-relation 8498. Up to 836 conditions per place. [2025-03-14 01:03:14,878 INFO L140 encePairwiseOnDemand]: 22/34 looper letters, 114 selfloop transitions, 65 changer transitions 15/197 dead transitions. [2025-03-14 01:03:14,878 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 197 transitions, 3332 flow [2025-03-14 01:03:14,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-03-14 01:03:14,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2025-03-14 01:03:14,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 140 transitions. [2025-03-14 01:03:14,878 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3167420814479638 [2025-03-14 01:03:14,878 INFO L175 Difference]: Start difference. First operand has 181 places, 168 transitions, 2825 flow. Second operand 13 states and 140 transitions. [2025-03-14 01:03:14,879 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 197 transitions, 3332 flow [2025-03-14 01:03:14,920 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 197 transitions, 3183 flow, removed 2 selfloop flow, removed 11 redundant places. [2025-03-14 01:03:14,923 INFO L231 Difference]: Finished difference. Result has 179 places, 162 transitions, 2693 flow [2025-03-14 01:03:14,923 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=2676, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2693, PETRI_PLACES=179, PETRI_TRANSITIONS=162} [2025-03-14 01:03:14,923 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 149 predicate places. [2025-03-14 01:03:14,923 INFO L471 AbstractCegarLoop]: Abstraction has has 179 places, 162 transitions, 2693 flow [2025-03-14 01:03:14,924 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.0) internal successors, (84), 12 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:03:14,924 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:03:14,924 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:03:14,924 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2025-03-14 01:03:14,924 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-14 01:03:14,924 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:03:14,924 INFO L85 PathProgramCache]: Analyzing trace with hash -1230901079, now seen corresponding path program 1 times [2025-03-14 01:03:14,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:03:14,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846491523] [2025-03-14 01:03:14,925 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-14 01:03:14,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:03:14,929 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 26 statements into 1 equivalence classes. [2025-03-14 01:03:14,933 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 26 of 26 statements. [2025-03-14 01:03:14,933 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-14 01:03:14,933 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:03:15,079 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-14 01:03:15,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:03:15,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1846491523] [2025-03-14 01:03:15,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1846491523] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-14 01:03:15,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [905107225] [2025-03-14 01:03:15,080 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-14 01:03:15,080 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-14 01:03:15,081 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-14 01:03:15,082 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-14 01:03:15,085 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2025-03-14 01:03:15,128 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 26 statements into 1 equivalence classes. [2025-03-14 01:03:15,143 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 26 of 26 statements. [2025-03-14 01:03:15,143 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-14 01:03:15,143 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:03:15,144 INFO L256 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 15 conjuncts are in the unsatisfiable core [2025-03-14 01:03:15,145 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-14 01:03:15,190 INFO L349 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2025-03-14 01:03:15,191 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 10 [2025-03-14 01:03:15,197 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-14 01:03:15,197 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-14 01:03:15,253 INFO L349 Elim1Store]: treesize reduction 28, result has 59.4 percent of original size [2025-03-14 01:03:15,253 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 32 treesize of output 48 [2025-03-14 01:03:15,263 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-14 01:03:15,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [905107225] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-14 01:03:15,263 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-14 01:03:15,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 7] total 17 [2025-03-14 01:03:15,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995088620] [2025-03-14 01:03:15,263 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-14 01:03:15,263 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-03-14 01:03:15,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:03:15,264 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-03-14 01:03:15,264 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2025-03-14 01:03:15,285 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 34 [2025-03-14 01:03:15,286 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 162 transitions, 2693 flow. Second operand has 17 states, 17 states have (on average 7.823529411764706) internal successors, (133), 17 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:03:15,286 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:03:15,286 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 34 [2025-03-14 01:03:15,286 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:03:15,723 INFO L124 PetriNetUnfolderBase]: 791/1375 cut-off events. [2025-03-14 01:03:15,724 INFO L125 PetriNetUnfolderBase]: For 16873/16929 co-relation queries the response was YES. [2025-03-14 01:03:15,729 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8798 conditions, 1375 events. 791/1375 cut-off events. For 16873/16929 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 6787 event pairs, 151 based on Foata normal form. 20/1395 useless extension candidates. Maximal degree in co-relation 8738. Up to 580 conditions per place. [2025-03-14 01:03:15,734 INFO L140 encePairwiseOnDemand]: 22/34 looper letters, 155 selfloop transitions, 62 changer transitions 0/220 dead transitions. [2025-03-14 01:03:15,734 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 220 transitions, 3622 flow [2025-03-14 01:03:15,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-14 01:03:15,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-03-14 01:03:15,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 132 transitions. [2025-03-14 01:03:15,735 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.38823529411764707 [2025-03-14 01:03:15,735 INFO L175 Difference]: Start difference. First operand has 179 places, 162 transitions, 2693 flow. Second operand 10 states and 132 transitions. [2025-03-14 01:03:15,735 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 220 transitions, 3622 flow [2025-03-14 01:03:15,778 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 220 transitions, 3367 flow, removed 2 selfloop flow, removed 13 redundant places. [2025-03-14 01:03:15,781 INFO L231 Difference]: Finished difference. Result has 170 places, 165 transitions, 2646 flow [2025-03-14 01:03:15,782 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=2459, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2646, PETRI_PLACES=170, PETRI_TRANSITIONS=165} [2025-03-14 01:03:15,782 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 140 predicate places. [2025-03-14 01:03:15,782 INFO L471 AbstractCegarLoop]: Abstraction has has 170 places, 165 transitions, 2646 flow [2025-03-14 01:03:15,782 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 7.823529411764706) internal successors, (133), 17 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:03:15,782 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:03:15,782 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:03:15,788 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2025-03-14 01:03:15,983 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-14 01:03:15,983 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-14 01:03:15,983 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:03:15,983 INFO L85 PathProgramCache]: Analyzing trace with hash 500700370, now seen corresponding path program 1 times [2025-03-14 01:03:15,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:03:15,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401694507] [2025-03-14 01:03:15,984 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-14 01:03:15,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:03:15,990 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 26 statements into 1 equivalence classes. [2025-03-14 01:03:15,995 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 26 of 26 statements. [2025-03-14 01:03:15,995 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-14 01:03:15,995 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:03:16,157 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-14 01:03:16,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:03:16,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401694507] [2025-03-14 01:03:16,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [401694507] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-14 01:03:16,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [239655280] [2025-03-14 01:03:16,157 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-14 01:03:16,157 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-14 01:03:16,157 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-14 01:03:16,160 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-14 01:03:16,162 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2025-03-14 01:03:16,224 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 26 statements into 1 equivalence classes. [2025-03-14 01:03:16,247 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 26 of 26 statements. [2025-03-14 01:03:16,247 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-14 01:03:16,247 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:03:16,248 INFO L256 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 15 conjuncts are in the unsatisfiable core [2025-03-14 01:03:16,249 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-14 01:03:16,300 INFO L349 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2025-03-14 01:03:16,300 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 10 [2025-03-14 01:03:16,306 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-14 01:03:16,306 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-14 01:03:16,372 INFO L349 Elim1Store]: treesize reduction 28, result has 63.6 percent of original size [2025-03-14 01:03:16,372 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 40 treesize of output 56 [2025-03-14 01:03:16,390 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-14 01:03:16,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [239655280] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-14 01:03:16,391 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-14 01:03:16,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 7] total 18 [2025-03-14 01:03:16,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290506422] [2025-03-14 01:03:16,391 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-14 01:03:16,391 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-03-14 01:03:16,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:03:16,391 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-03-14 01:03:16,391 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=239, Unknown=0, NotChecked=0, Total=306 [2025-03-14 01:03:16,427 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 34 [2025-03-14 01:03:16,427 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 165 transitions, 2646 flow. Second operand has 18 states, 18 states have (on average 7.5) internal successors, (135), 18 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:03:16,427 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:03:16,427 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 34 [2025-03-14 01:03:16,427 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:03:16,774 INFO L124 PetriNetUnfolderBase]: 869/1491 cut-off events. [2025-03-14 01:03:16,774 INFO L125 PetriNetUnfolderBase]: For 17106/17161 co-relation queries the response was YES. [2025-03-14 01:03:16,781 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9804 conditions, 1491 events. 869/1491 cut-off events. For 17106/17161 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 7461 event pairs, 345 based on Foata normal form. 10/1497 useless extension candidates. Maximal degree in co-relation 9743. Up to 1047 conditions per place. [2025-03-14 01:03:16,787 INFO L140 encePairwiseOnDemand]: 21/34 looper letters, 135 selfloop transitions, 66 changer transitions 0/204 dead transitions. [2025-03-14 01:03:16,787 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 204 transitions, 3545 flow [2025-03-14 01:03:16,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-14 01:03:16,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-03-14 01:03:16,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 123 transitions. [2025-03-14 01:03:16,788 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.36176470588235293 [2025-03-14 01:03:16,788 INFO L175 Difference]: Start difference. First operand has 170 places, 165 transitions, 2646 flow. Second operand 10 states and 123 transitions. [2025-03-14 01:03:16,788 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 204 transitions, 3545 flow [2025-03-14 01:03:16,838 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 204 transitions, 3329 flow, removed 14 selfloop flow, removed 9 redundant places. [2025-03-14 01:03:16,841 INFO L231 Difference]: Finished difference. Result has 172 places, 172 transitions, 2739 flow [2025-03-14 01:03:16,841 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=2455, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2739, PETRI_PLACES=172, PETRI_TRANSITIONS=172} [2025-03-14 01:03:16,841 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 142 predicate places. [2025-03-14 01:03:16,841 INFO L471 AbstractCegarLoop]: Abstraction has has 172 places, 172 transitions, 2739 flow [2025-03-14 01:03:16,842 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 7.5) internal successors, (135), 18 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:03:16,842 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:03:16,842 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:03:16,849 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2025-03-14 01:03:17,042 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2025-03-14 01:03:17,042 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-14 01:03:17,043 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:03:17,043 INFO L85 PathProgramCache]: Analyzing trace with hash -1953144202, now seen corresponding path program 2 times [2025-03-14 01:03:17,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:03:17,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895402622] [2025-03-14 01:03:17,043 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-14 01:03:17,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:03:17,048 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 26 statements into 2 equivalence classes. [2025-03-14 01:03:17,062 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 26 of 26 statements. [2025-03-14 01:03:17,062 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-14 01:03:17,062 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:03:17,247 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-14 01:03:17,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:03:17,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895402622] [2025-03-14 01:03:17,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [895402622] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-14 01:03:17,248 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-14 01:03:17,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-03-14 01:03:17,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422744218] [2025-03-14 01:03:17,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 01:03:17,248 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-03-14 01:03:17,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:03:17,249 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-03-14 01:03:17,249 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2025-03-14 01:03:17,262 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 34 [2025-03-14 01:03:17,264 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 172 transitions, 2739 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:03:17,264 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:03:17,264 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 34 [2025-03-14 01:03:17,264 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:03:17,595 INFO L124 PetriNetUnfolderBase]: 857/1472 cut-off events. [2025-03-14 01:03:17,595 INFO L125 PetriNetUnfolderBase]: For 15229/15298 co-relation queries the response was YES. [2025-03-14 01:03:17,600 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9464 conditions, 1472 events. 857/1472 cut-off events. For 15229/15298 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 7374 event pairs, 262 based on Foata normal form. 16/1484 useless extension candidates. Maximal degree in co-relation 9404. Up to 786 conditions per place. [2025-03-14 01:03:17,605 INFO L140 encePairwiseOnDemand]: 24/34 looper letters, 137 selfloop transitions, 61 changer transitions 20/221 dead transitions. [2025-03-14 01:03:17,605 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 221 transitions, 3436 flow [2025-03-14 01:03:17,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-03-14 01:03:17,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2025-03-14 01:03:17,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 148 transitions. [2025-03-14 01:03:17,606 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3627450980392157 [2025-03-14 01:03:17,606 INFO L175 Difference]: Start difference. First operand has 172 places, 172 transitions, 2739 flow. Second operand 12 states and 148 transitions. [2025-03-14 01:03:17,606 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 221 transitions, 3436 flow [2025-03-14 01:03:17,652 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 221 transitions, 3317 flow, removed 15 selfloop flow, removed 6 redundant places. [2025-03-14 01:03:17,656 INFO L231 Difference]: Finished difference. Result has 177 places, 163 transitions, 2592 flow [2025-03-14 01:03:17,656 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=2563, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2592, PETRI_PLACES=177, PETRI_TRANSITIONS=163} [2025-03-14 01:03:17,656 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 147 predicate places. [2025-03-14 01:03:17,656 INFO L471 AbstractCegarLoop]: Abstraction has has 177 places, 163 transitions, 2592 flow [2025-03-14 01:03:17,657 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:03:17,657 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:03:17,657 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:03:17,657 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2025-03-14 01:03:17,657 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-14 01:03:17,657 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:03:17,657 INFO L85 PathProgramCache]: Analyzing trace with hash -1826121822, now seen corresponding path program 3 times [2025-03-14 01:03:17,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:03:17,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979802246] [2025-03-14 01:03:17,658 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-14 01:03:17,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:03:17,662 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 26 statements into 2 equivalence classes. [2025-03-14 01:03:17,669 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 26 of 26 statements. [2025-03-14 01:03:17,669 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-03-14 01:03:17,669 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:03:17,827 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-14 01:03:17,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:03:17,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979802246] [2025-03-14 01:03:17,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1979802246] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-14 01:03:17,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [180553387] [2025-03-14 01:03:17,828 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-14 01:03:17,828 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-14 01:03:17,828 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-14 01:03:17,830 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-14 01:03:17,831 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2025-03-14 01:03:17,878 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 26 statements into 2 equivalence classes. [2025-03-14 01:03:17,896 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 26 of 26 statements. [2025-03-14 01:03:17,896 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-03-14 01:03:17,896 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:03:17,897 INFO L256 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 25 conjuncts are in the unsatisfiable core [2025-03-14 01:03:17,898 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-14 01:03:17,956 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-14 01:03:17,957 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 21 [2025-03-14 01:03:17,971 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-14 01:03:17,972 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-14 01:03:18,058 INFO L349 Elim1Store]: treesize reduction 28, result has 59.4 percent of original size [2025-03-14 01:03:18,059 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 32 treesize of output 48 [2025-03-14 01:03:18,071 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-14 01:03:18,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [180553387] provided 1 perfect and 1 imperfect interpolant sequences [2025-03-14 01:03:18,071 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-03-14 01:03:18,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9, 9] total 18 [2025-03-14 01:03:18,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685323952] [2025-03-14 01:03:18,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 01:03:18,071 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-14 01:03:18,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:03:18,072 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-14 01:03:18,072 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=235, Unknown=0, NotChecked=0, Total=306 [2025-03-14 01:03:18,079 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 34 [2025-03-14 01:03:18,079 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 163 transitions, 2592 flow. Second operand has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:03:18,079 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:03:18,079 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 34 [2025-03-14 01:03:18,079 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:03:18,421 INFO L124 PetriNetUnfolderBase]: 900/1548 cut-off events. [2025-03-14 01:03:18,421 INFO L125 PetriNetUnfolderBase]: For 17132/17201 co-relation queries the response was YES. [2025-03-14 01:03:18,427 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9994 conditions, 1548 events. 900/1548 cut-off events. For 17132/17201 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 7841 event pairs, 264 based on Foata normal form. 10/1554 useless extension candidates. Maximal degree in co-relation 9934. Up to 803 conditions per place. [2025-03-14 01:03:18,431 INFO L140 encePairwiseOnDemand]: 24/34 looper letters, 160 selfloop transitions, 64 changer transitions 3/230 dead transitions. [2025-03-14 01:03:18,431 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 230 transitions, 3585 flow [2025-03-14 01:03:18,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-03-14 01:03:18,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2025-03-14 01:03:18,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 157 transitions. [2025-03-14 01:03:18,431 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4197860962566845 [2025-03-14 01:03:18,432 INFO L175 Difference]: Start difference. First operand has 177 places, 163 transitions, 2592 flow. Second operand 11 states and 157 transitions. [2025-03-14 01:03:18,432 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 230 transitions, 3585 flow [2025-03-14 01:03:18,474 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 230 transitions, 3420 flow, removed 24 selfloop flow, removed 12 redundant places. [2025-03-14 01:03:18,477 INFO L231 Difference]: Finished difference. Result has 168 places, 168 transitions, 2696 flow [2025-03-14 01:03:18,477 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=2460, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2696, PETRI_PLACES=168, PETRI_TRANSITIONS=168} [2025-03-14 01:03:18,478 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 138 predicate places. [2025-03-14 01:03:18,478 INFO L471 AbstractCegarLoop]: Abstraction has has 168 places, 168 transitions, 2696 flow [2025-03-14 01:03:18,478 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:03:18,478 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:03:18,478 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:03:18,485 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2025-03-14 01:03:18,678 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2025-03-14 01:03:18,679 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-14 01:03:18,679 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:03:18,679 INFO L85 PathProgramCache]: Analyzing trace with hash 1273769365, now seen corresponding path program 2 times [2025-03-14 01:03:18,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:03:18,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002303955] [2025-03-14 01:03:18,679 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-14 01:03:18,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:03:18,684 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 26 statements into 2 equivalence classes. [2025-03-14 01:03:18,687 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 24 of 26 statements. [2025-03-14 01:03:18,687 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-14 01:03:18,687 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:03:18,834 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-14 01:03:18,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:03:18,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002303955] [2025-03-14 01:03:18,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2002303955] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-14 01:03:18,834 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-14 01:03:18,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-03-14 01:03:18,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396227736] [2025-03-14 01:03:18,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 01:03:18,835 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-03-14 01:03:18,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:03:18,835 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-03-14 01:03:18,835 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2025-03-14 01:03:18,849 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 34 [2025-03-14 01:03:18,850 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 168 transitions, 2696 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:03:18,850 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:03:18,850 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 34 [2025-03-14 01:03:18,850 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:03:19,194 INFO L124 PetriNetUnfolderBase]: 1008/1719 cut-off events. [2025-03-14 01:03:19,194 INFO L125 PetriNetUnfolderBase]: For 19042/19125 co-relation queries the response was YES. [2025-03-14 01:03:19,226 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11228 conditions, 1719 events. 1008/1719 cut-off events. For 19042/19125 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 8885 event pairs, 335 based on Foata normal form. 20/1734 useless extension candidates. Maximal degree in co-relation 11171. Up to 1117 conditions per place. [2025-03-14 01:03:19,231 INFO L140 encePairwiseOnDemand]: 22/34 looper letters, 142 selfloop transitions, 73 changer transitions 0/218 dead transitions. [2025-03-14 01:03:19,231 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 218 transitions, 3591 flow [2025-03-14 01:03:19,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-14 01:03:19,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-03-14 01:03:19,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 122 transitions. [2025-03-14 01:03:19,232 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.39869281045751637 [2025-03-14 01:03:19,232 INFO L175 Difference]: Start difference. First operand has 168 places, 168 transitions, 2696 flow. Second operand 9 states and 122 transitions. [2025-03-14 01:03:19,232 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 218 transitions, 3591 flow [2025-03-14 01:03:19,277 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 218 transitions, 3518 flow, removed 9 selfloop flow, removed 3 redundant places. [2025-03-14 01:03:19,280 INFO L231 Difference]: Finished difference. Result has 175 places, 174 transitions, 2898 flow [2025-03-14 01:03:19,280 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=2623, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2898, PETRI_PLACES=175, PETRI_TRANSITIONS=174} [2025-03-14 01:03:19,281 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 145 predicate places. [2025-03-14 01:03:19,281 INFO L471 AbstractCegarLoop]: Abstraction has has 175 places, 174 transitions, 2898 flow [2025-03-14 01:03:19,281 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:03:19,281 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:03:19,281 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:03:19,281 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2025-03-14 01:03:19,281 INFO L396 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-14 01:03:19,281 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:03:19,281 INFO L85 PathProgramCache]: Analyzing trace with hash 461770529, now seen corresponding path program 3 times [2025-03-14 01:03:19,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:03:19,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437752573] [2025-03-14 01:03:19,281 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-14 01:03:19,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:03:19,285 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 26 statements into 2 equivalence classes. [2025-03-14 01:03:19,288 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 24 of 26 statements. [2025-03-14 01:03:19,289 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-03-14 01:03:19,289 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:03:19,463 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-14 01:03:19,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:03:19,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1437752573] [2025-03-14 01:03:19,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1437752573] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-14 01:03:19,464 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-14 01:03:19,465 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-03-14 01:03:19,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300778206] [2025-03-14 01:03:19,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 01:03:19,466 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-03-14 01:03:19,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:03:19,466 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-03-14 01:03:19,466 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2025-03-14 01:03:19,479 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 34 [2025-03-14 01:03:19,479 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 174 transitions, 2898 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:03:19,479 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:03:19,479 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 34 [2025-03-14 01:03:19,479 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:03:19,801 INFO L124 PetriNetUnfolderBase]: 992/1707 cut-off events. [2025-03-14 01:03:19,801 INFO L125 PetriNetUnfolderBase]: For 20693/20772 co-relation queries the response was YES. [2025-03-14 01:03:19,808 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11318 conditions, 1707 events. 992/1707 cut-off events. For 20693/20772 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 8937 event pairs, 368 based on Foata normal form. 20/1723 useless extension candidates. Maximal degree in co-relation 11259. Up to 1206 conditions per place. [2025-03-14 01:03:19,813 INFO L140 encePairwiseOnDemand]: 22/34 looper letters, 130 selfloop transitions, 71 changer transitions 0/204 dead transitions. [2025-03-14 01:03:19,813 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 204 transitions, 3506 flow [2025-03-14 01:03:19,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-14 01:03:19,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-03-14 01:03:19,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 114 transitions. [2025-03-14 01:03:19,814 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.37254901960784315 [2025-03-14 01:03:19,814 INFO L175 Difference]: Start difference. First operand has 175 places, 174 transitions, 2898 flow. Second operand 9 states and 114 transitions. [2025-03-14 01:03:19,814 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 204 transitions, 3506 flow [2025-03-14 01:03:19,863 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 204 transitions, 3424 flow, removed 17 selfloop flow, removed 4 redundant places. [2025-03-14 01:03:19,866 INFO L231 Difference]: Finished difference. Result has 181 places, 175 transitions, 2989 flow [2025-03-14 01:03:19,866 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=2816, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2989, PETRI_PLACES=181, PETRI_TRANSITIONS=175} [2025-03-14 01:03:19,866 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 151 predicate places. [2025-03-14 01:03:19,866 INFO L471 AbstractCegarLoop]: Abstraction has has 181 places, 175 transitions, 2989 flow [2025-03-14 01:03:19,866 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:03:19,866 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:03:19,866 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:03:19,866 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2025-03-14 01:03:19,867 INFO L396 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-14 01:03:19,867 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:03:19,867 INFO L85 PathProgramCache]: Analyzing trace with hash 1774337445, now seen corresponding path program 4 times [2025-03-14 01:03:19,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:03:19,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877837233] [2025-03-14 01:03:19,867 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-14 01:03:19,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:03:19,876 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 26 statements into 2 equivalence classes. [2025-03-14 01:03:19,877 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 20 of 26 statements. [2025-03-14 01:03:19,877 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-03-14 01:03:19,877 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:03:19,937 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-14 01:03:19,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:03:19,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877837233] [2025-03-14 01:03:19,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [877837233] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-14 01:03:19,937 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-14 01:03:19,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-14 01:03:19,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458959211] [2025-03-14 01:03:19,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 01:03:19,937 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-14 01:03:19,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:03:19,938 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-14 01:03:19,938 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2025-03-14 01:03:19,947 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 34 [2025-03-14 01:03:19,948 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 175 transitions, 2989 flow. Second operand has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:03:19,948 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:03:19,948 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 34 [2025-03-14 01:03:19,948 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:03:20,237 INFO L124 PetriNetUnfolderBase]: 967/1666 cut-off events. [2025-03-14 01:03:20,238 INFO L125 PetriNetUnfolderBase]: For 18876/18957 co-relation queries the response was YES. [2025-03-14 01:03:20,247 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11095 conditions, 1666 events. 967/1666 cut-off events. For 18876/18957 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 8667 event pairs, 374 based on Foata normal form. 10/1672 useless extension candidates. Maximal degree in co-relation 11034. Up to 1197 conditions per place. [2025-03-14 01:03:20,252 INFO L140 encePairwiseOnDemand]: 24/34 looper letters, 125 selfloop transitions, 64 changer transitions 5/197 dead transitions. [2025-03-14 01:03:20,253 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 197 transitions, 3472 flow [2025-03-14 01:03:20,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-14 01:03:20,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-03-14 01:03:20,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 105 transitions. [2025-03-14 01:03:20,253 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3860294117647059 [2025-03-14 01:03:20,253 INFO L175 Difference]: Start difference. First operand has 181 places, 175 transitions, 2989 flow. Second operand 8 states and 105 transitions. [2025-03-14 01:03:20,253 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 197 transitions, 3472 flow [2025-03-14 01:03:20,312 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 197 transitions, 3344 flow, removed 1 selfloop flow, removed 5 redundant places. [2025-03-14 01:03:20,315 INFO L231 Difference]: Finished difference. Result has 183 places, 171 transitions, 2882 flow [2025-03-14 01:03:20,315 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=2816, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2882, PETRI_PLACES=183, PETRI_TRANSITIONS=171} [2025-03-14 01:03:20,316 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 153 predicate places. [2025-03-14 01:03:20,316 INFO L471 AbstractCegarLoop]: Abstraction has has 183 places, 171 transitions, 2882 flow [2025-03-14 01:03:20,316 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:03:20,317 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:03:20,317 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:03:20,317 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2025-03-14 01:03:20,317 INFO L396 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-14 01:03:20,317 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:03:20,317 INFO L85 PathProgramCache]: Analyzing trace with hash -1478168994, now seen corresponding path program 4 times [2025-03-14 01:03:20,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:03:20,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655245182] [2025-03-14 01:03:20,317 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-14 01:03:20,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:03:20,322 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 26 statements into 2 equivalence classes. [2025-03-14 01:03:20,324 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 20 of 26 statements. [2025-03-14 01:03:20,324 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-03-14 01:03:20,324 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:03:20,378 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-14 01:03:20,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:03:20,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [655245182] [2025-03-14 01:03:20,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [655245182] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-14 01:03:20,379 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-14 01:03:20,379 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-14 01:03:20,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887102214] [2025-03-14 01:03:20,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 01:03:20,379 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-14 01:03:20,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:03:20,379 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-14 01:03:20,379 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2025-03-14 01:03:20,394 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 34 [2025-03-14 01:03:20,394 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 171 transitions, 2882 flow. Second operand has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:03:20,394 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:03:20,394 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 34 [2025-03-14 01:03:20,394 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:03:20,735 INFO L124 PetriNetUnfolderBase]: 957/1650 cut-off events. [2025-03-14 01:03:20,736 INFO L125 PetriNetUnfolderBase]: For 18316/18397 co-relation queries the response was YES. [2025-03-14 01:03:20,741 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10890 conditions, 1650 events. 957/1650 cut-off events. For 18316/18397 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 8560 event pairs, 368 based on Foata normal form. 11/1656 useless extension candidates. Maximal degree in co-relation 10829. Up to 1166 conditions per place. [2025-03-14 01:03:20,744 INFO L140 encePairwiseOnDemand]: 26/34 looper letters, 123 selfloop transitions, 62 changer transitions 9/197 dead transitions. [2025-03-14 01:03:20,744 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 197 transitions, 3376 flow [2025-03-14 01:03:20,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-14 01:03:20,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-03-14 01:03:20,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 116 transitions. [2025-03-14 01:03:20,745 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3790849673202614 [2025-03-14 01:03:20,745 INFO L175 Difference]: Start difference. First operand has 183 places, 171 transitions, 2882 flow. Second operand 9 states and 116 transitions. [2025-03-14 01:03:20,745 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 197 transitions, 3376 flow [2025-03-14 01:03:20,790 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 197 transitions, 3199 flow, removed 1 selfloop flow, removed 7 redundant places. [2025-03-14 01:03:20,792 INFO L231 Difference]: Finished difference. Result has 181 places, 164 transitions, 2708 flow [2025-03-14 01:03:20,792 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=2661, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2708, PETRI_PLACES=181, PETRI_TRANSITIONS=164} [2025-03-14 01:03:20,793 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 151 predicate places. [2025-03-14 01:03:20,793 INFO L471 AbstractCegarLoop]: Abstraction has has 181 places, 164 transitions, 2708 flow [2025-03-14 01:03:20,793 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:03:20,793 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:03:20,793 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:03:20,793 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2025-03-14 01:03:20,793 INFO L396 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-14 01:03:20,793 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:03:20,793 INFO L85 PathProgramCache]: Analyzing trace with hash -437933196, now seen corresponding path program 5 times [2025-03-14 01:03:20,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:03:20,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935339788] [2025-03-14 01:03:20,793 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-14 01:03:20,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:03:20,798 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 26 statements into 2 equivalence classes. [2025-03-14 01:03:20,802 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 26 of 26 statements. [2025-03-14 01:03:20,802 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-14 01:03:20,802 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:03:20,993 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-14 01:03:20,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:03:20,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1935339788] [2025-03-14 01:03:20,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1935339788] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-14 01:03:20,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2046993911] [2025-03-14 01:03:20,994 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-14 01:03:20,994 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-14 01:03:20,994 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-14 01:03:20,996 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-14 01:03:20,998 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2025-03-14 01:03:21,046 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 26 statements into 2 equivalence classes. [2025-03-14 01:03:21,062 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 26 of 26 statements. [2025-03-14 01:03:21,062 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-14 01:03:21,062 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:03:21,064 INFO L256 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 25 conjuncts are in the unsatisfiable core [2025-03-14 01:03:21,064 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-14 01:03:21,142 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-14 01:03:21,142 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 21 [2025-03-14 01:03:21,160 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-14 01:03:21,160 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-14 01:03:21,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2046993911] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-14 01:03:21,160 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-14 01:03:21,160 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10] total 17 [2025-03-14 01:03:21,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383868377] [2025-03-14 01:03:21,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 01:03:21,161 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-03-14 01:03:21,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:03:21,161 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-03-14 01:03:21,161 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2025-03-14 01:03:21,168 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 34 [2025-03-14 01:03:21,168 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 164 transitions, 2708 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:03:21,168 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:03:21,168 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 34 [2025-03-14 01:03:21,168 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:03:21,521 INFO L124 PetriNetUnfolderBase]: 892/1531 cut-off events. [2025-03-14 01:03:21,521 INFO L125 PetriNetUnfolderBase]: For 16462/16533 co-relation queries the response was YES. [2025-03-14 01:03:21,527 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10113 conditions, 1531 events. 892/1531 cut-off events. For 16462/16533 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 7737 event pairs, 349 based on Foata normal form. 11/1537 useless extension candidates. Maximal degree in co-relation 10052. Up to 1087 conditions per place. [2025-03-14 01:03:21,532 INFO L140 encePairwiseOnDemand]: 24/34 looper letters, 117 selfloop transitions, 60 changer transitions 6/186 dead transitions. [2025-03-14 01:03:21,532 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 186 transitions, 3143 flow [2025-03-14 01:03:21,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-14 01:03:21,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-03-14 01:03:21,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 114 transitions. [2025-03-14 01:03:21,533 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3352941176470588 [2025-03-14 01:03:21,533 INFO L175 Difference]: Start difference. First operand has 181 places, 164 transitions, 2708 flow. Second operand 10 states and 114 transitions. [2025-03-14 01:03:21,533 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 186 transitions, 3143 flow [2025-03-14 01:03:21,592 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 186 transitions, 3026 flow, removed 10 selfloop flow, removed 9 redundant places. [2025-03-14 01:03:21,595 INFO L231 Difference]: Finished difference. Result has 177 places, 159 transitions, 2606 flow [2025-03-14 01:03:21,595 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=2525, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2606, PETRI_PLACES=177, PETRI_TRANSITIONS=159} [2025-03-14 01:03:21,596 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 147 predicate places. [2025-03-14 01:03:21,596 INFO L471 AbstractCegarLoop]: Abstraction has has 177 places, 159 transitions, 2606 flow [2025-03-14 01:03:21,596 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:03:21,596 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:03:21,596 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:03:21,602 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2025-03-14 01:03:21,796 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-14 01:03:21,797 INFO L396 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-14 01:03:21,797 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:03:21,797 INFO L85 PathProgramCache]: Analyzing trace with hash -1136872086, now seen corresponding path program 6 times [2025-03-14 01:03:21,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:03:21,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542128414] [2025-03-14 01:03:21,797 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-14 01:03:21,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:03:21,808 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 26 statements into 2 equivalence classes. [2025-03-14 01:03:21,814 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) and asserted 24 of 26 statements. [2025-03-14 01:03:21,815 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2025-03-14 01:03:21,815 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:03:22,017 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-14 01:03:22,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:03:22,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542128414] [2025-03-14 01:03:22,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1542128414] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-14 01:03:22,018 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-14 01:03:22,018 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-03-14 01:03:22,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076832557] [2025-03-14 01:03:22,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 01:03:22,018 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-03-14 01:03:22,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:03:22,019 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-03-14 01:03:22,019 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2025-03-14 01:03:22,033 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 34 [2025-03-14 01:03:22,033 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 159 transitions, 2606 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:03:22,033 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:03:22,033 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 34 [2025-03-14 01:03:22,033 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:03:22,413 INFO L124 PetriNetUnfolderBase]: 913/1559 cut-off events. [2025-03-14 01:03:22,414 INFO L125 PetriNetUnfolderBase]: For 17281/17352 co-relation queries the response was YES. [2025-03-14 01:03:22,425 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10367 conditions, 1559 events. 913/1559 cut-off events. For 17281/17352 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 7876 event pairs, 355 based on Foata normal form. 10/1565 useless extension candidates. Maximal degree in co-relation 10309. Up to 1099 conditions per place. [2025-03-14 01:03:22,432 INFO L140 encePairwiseOnDemand]: 22/34 looper letters, 122 selfloop transitions, 60 changer transitions 0/185 dead transitions. [2025-03-14 01:03:22,432 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 185 transitions, 3271 flow [2025-03-14 01:03:22,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-14 01:03:22,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-03-14 01:03:22,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 112 transitions. [2025-03-14 01:03:22,434 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3660130718954248 [2025-03-14 01:03:22,434 INFO L175 Difference]: Start difference. First operand has 177 places, 159 transitions, 2606 flow. Second operand 9 states and 112 transitions. [2025-03-14 01:03:22,434 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 185 transitions, 3271 flow [2025-03-14 01:03:22,500 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 185 transitions, 3057 flow, removed 2 selfloop flow, removed 11 redundant places. [2025-03-14 01:03:22,504 INFO L231 Difference]: Finished difference. Result has 172 places, 166 transitions, 2708 flow [2025-03-14 01:03:22,505 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=2410, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2708, PETRI_PLACES=172, PETRI_TRANSITIONS=166} [2025-03-14 01:03:22,505 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 142 predicate places. [2025-03-14 01:03:22,505 INFO L471 AbstractCegarLoop]: Abstraction has has 172 places, 166 transitions, 2708 flow [2025-03-14 01:03:22,505 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:03:22,505 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:03:22,505 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:03:22,505 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2025-03-14 01:03:22,505 INFO L396 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-14 01:03:22,506 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:03:22,506 INFO L85 PathProgramCache]: Analyzing trace with hash 519328688, now seen corresponding path program 7 times [2025-03-14 01:03:22,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:03:22,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733631777] [2025-03-14 01:03:22,506 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-14 01:03:22,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:03:22,517 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 26 statements into 1 equivalence classes. [2025-03-14 01:03:22,523 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 26 of 26 statements. [2025-03-14 01:03:22,524 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-14 01:03:22,524 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:03:22,701 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-14 01:03:22,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:03:22,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733631777] [2025-03-14 01:03:22,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [733631777] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-14 01:03:22,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1887427022] [2025-03-14 01:03:22,701 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-14 01:03:22,701 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-14 01:03:22,701 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-14 01:03:22,703 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-14 01:03:22,704 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2025-03-14 01:03:22,759 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 26 statements into 1 equivalence classes. [2025-03-14 01:03:22,777 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 26 of 26 statements. [2025-03-14 01:03:22,777 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-14 01:03:22,777 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:03:22,778 INFO L256 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 15 conjuncts are in the unsatisfiable core [2025-03-14 01:03:22,779 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-14 01:03:22,819 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-14 01:03:22,819 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 25 [2025-03-14 01:03:22,839 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-14 01:03:22,839 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-14 01:03:22,908 INFO L349 Elim1Store]: treesize reduction 28, result has 63.6 percent of original size [2025-03-14 01:03:22,908 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 40 treesize of output 56 [2025-03-14 01:03:22,925 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-14 01:03:22,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1887427022] provided 1 perfect and 1 imperfect interpolant sequences [2025-03-14 01:03:22,926 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-03-14 01:03:22,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9, 7] total 18 [2025-03-14 01:03:22,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150523188] [2025-03-14 01:03:22,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 01:03:22,926 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-14 01:03:22,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:03:22,926 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-14 01:03:22,926 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=237, Unknown=0, NotChecked=0, Total=306 [2025-03-14 01:03:22,939 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 34 [2025-03-14 01:03:22,940 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 166 transitions, 2708 flow. Second operand has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:03:22,940 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:03:22,940 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 34 [2025-03-14 01:03:22,940 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:03:23,280 INFO L124 PetriNetUnfolderBase]: 958/1653 cut-off events. [2025-03-14 01:03:23,280 INFO L125 PetriNetUnfolderBase]: For 16813/16890 co-relation queries the response was YES. [2025-03-14 01:03:23,288 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10601 conditions, 1653 events. 958/1653 cut-off events. For 16813/16890 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 8594 event pairs, 346 based on Foata normal form. 10/1659 useless extension candidates. Maximal degree in co-relation 10542. Up to 1075 conditions per place. [2025-03-14 01:03:23,293 INFO L140 encePairwiseOnDemand]: 24/34 looper letters, 144 selfloop transitions, 63 changer transitions 0/210 dead transitions. [2025-03-14 01:03:23,293 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 210 transitions, 3483 flow [2025-03-14 01:03:23,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-14 01:03:23,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-03-14 01:03:23,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 139 transitions. [2025-03-14 01:03:23,294 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4088235294117647 [2025-03-14 01:03:23,294 INFO L175 Difference]: Start difference. First operand has 172 places, 166 transitions, 2708 flow. Second operand 10 states and 139 transitions. [2025-03-14 01:03:23,294 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 210 transitions, 3483 flow [2025-03-14 01:03:23,343 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 210 transitions, 3375 flow, removed 14 selfloop flow, removed 5 redundant places. [2025-03-14 01:03:23,346 INFO L231 Difference]: Finished difference. Result has 179 places, 172 transitions, 2867 flow [2025-03-14 01:03:23,346 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=2606, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2867, PETRI_PLACES=179, PETRI_TRANSITIONS=172} [2025-03-14 01:03:23,346 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 149 predicate places. [2025-03-14 01:03:23,346 INFO L471 AbstractCegarLoop]: Abstraction has has 179 places, 172 transitions, 2867 flow [2025-03-14 01:03:23,346 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:03:23,346 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:03:23,347 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:03:23,352 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2025-03-14 01:03:23,547 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-14 01:03:23,547 INFO L396 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-14 01:03:23,548 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:03:23,548 INFO L85 PathProgramCache]: Analyzing trace with hash 877041391, now seen corresponding path program 5 times [2025-03-14 01:03:23,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:03:23,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327055020] [2025-03-14 01:03:23,548 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-14 01:03:23,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:03:23,554 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 26 statements into 2 equivalence classes. [2025-03-14 01:03:23,561 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 26 of 26 statements. [2025-03-14 01:03:23,561 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-14 01:03:23,561 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:03:23,705 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-14 01:03:23,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:03:23,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1327055020] [2025-03-14 01:03:23,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1327055020] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-14 01:03:23,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1706497750] [2025-03-14 01:03:23,706 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-14 01:03:23,706 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-14 01:03:23,706 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-14 01:03:23,708 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-14 01:03:23,710 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2025-03-14 01:03:23,762 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 26 statements into 2 equivalence classes. [2025-03-14 01:03:23,777 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 26 of 26 statements. [2025-03-14 01:03:23,777 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-14 01:03:23,777 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:03:23,782 INFO L256 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 19 conjuncts are in the unsatisfiable core [2025-03-14 01:03:23,783 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-14 01:03:23,847 INFO L349 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2025-03-14 01:03:23,847 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 10 [2025-03-14 01:03:23,853 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-14 01:03:23,853 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-14 01:03:23,906 INFO L349 Elim1Store]: treesize reduction 28, result has 63.6 percent of original size [2025-03-14 01:03:23,906 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 40 treesize of output 56 [2025-03-14 01:03:23,920 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-14 01:03:23,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1706497750] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-14 01:03:23,920 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-14 01:03:23,920 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 18 [2025-03-14 01:03:23,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116182193] [2025-03-14 01:03:23,920 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-14 01:03:23,920 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-03-14 01:03:23,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:03:23,921 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-03-14 01:03:23,921 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=249, Unknown=0, NotChecked=0, Total=306 [2025-03-14 01:03:23,959 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 34 [2025-03-14 01:03:23,959 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 172 transitions, 2867 flow. Second operand has 18 states, 18 states have (on average 7.611111111111111) internal successors, (137), 18 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:03:23,959 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:03:23,959 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 34 [2025-03-14 01:03:23,959 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:03:24,324 INFO L124 PetriNetUnfolderBase]: 1066/1829 cut-off events. [2025-03-14 01:03:24,324 INFO L125 PetriNetUnfolderBase]: For 20328/20409 co-relation queries the response was YES. [2025-03-14 01:03:24,333 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11993 conditions, 1829 events. 1066/1829 cut-off events. For 20328/20409 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 9696 event pairs, 369 based on Foata normal form. 16/1840 useless extension candidates. Maximal degree in co-relation 11931. Up to 1218 conditions per place. [2025-03-14 01:03:24,339 INFO L140 encePairwiseOnDemand]: 19/34 looper letters, 139 selfloop transitions, 71 changer transitions 0/213 dead transitions. [2025-03-14 01:03:24,340 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 213 transitions, 3702 flow [2025-03-14 01:03:24,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-03-14 01:03:24,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2025-03-14 01:03:24,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 132 transitions. [2025-03-14 01:03:24,340 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.35294117647058826 [2025-03-14 01:03:24,340 INFO L175 Difference]: Start difference. First operand has 179 places, 172 transitions, 2867 flow. Second operand 11 states and 132 transitions. [2025-03-14 01:03:24,340 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 213 transitions, 3702 flow [2025-03-14 01:03:24,397 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 213 transitions, 3646 flow, removed 5 selfloop flow, removed 2 redundant places. [2025-03-14 01:03:24,400 INFO L231 Difference]: Finished difference. Result has 189 places, 178 transitions, 3091 flow [2025-03-14 01:03:24,400 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=2813, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3091, PETRI_PLACES=189, PETRI_TRANSITIONS=178} [2025-03-14 01:03:24,400 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 159 predicate places. [2025-03-14 01:03:24,401 INFO L471 AbstractCegarLoop]: Abstraction has has 189 places, 178 transitions, 3091 flow [2025-03-14 01:03:24,401 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 7.611111111111111) internal successors, (137), 18 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:03:24,401 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:03:24,401 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:03:24,407 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2025-03-14 01:03:24,604 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-14 01:03:24,605 INFO L396 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-14 01:03:24,605 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:03:24,605 INFO L85 PathProgramCache]: Analyzing trace with hash -811163179, now seen corresponding path program 6 times [2025-03-14 01:03:24,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:03:24,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318872124] [2025-03-14 01:03:24,605 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-14 01:03:24,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:03:24,610 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 26 statements into 2 equivalence classes. [2025-03-14 01:03:24,613 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) and asserted 24 of 26 statements. [2025-03-14 01:03:24,614 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2025-03-14 01:03:24,614 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:03:24,746 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-14 01:03:24,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:03:24,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [318872124] [2025-03-14 01:03:24,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [318872124] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-14 01:03:24,747 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-14 01:03:24,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-03-14 01:03:24,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700360574] [2025-03-14 01:03:24,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 01:03:24,748 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-03-14 01:03:24,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:03:24,748 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-03-14 01:03:24,748 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2025-03-14 01:03:24,761 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 34 [2025-03-14 01:03:24,761 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 178 transitions, 3091 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:03:24,761 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:03:24,761 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 34 [2025-03-14 01:03:24,761 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:03:25,091 INFO L124 PetriNetUnfolderBase]: 1089/1879 cut-off events. [2025-03-14 01:03:25,091 INFO L125 PetriNetUnfolderBase]: For 24058/24125 co-relation queries the response was YES. [2025-03-14 01:03:25,097 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12623 conditions, 1879 events. 1089/1879 cut-off events. For 24058/24125 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 10062 event pairs, 424 based on Foata normal form. 16/1891 useless extension candidates. Maximal degree in co-relation 12559. Up to 1364 conditions per place. [2025-03-14 01:03:25,101 INFO L140 encePairwiseOnDemand]: 22/34 looper letters, 132 selfloop transitions, 66 changer transitions 0/201 dead transitions. [2025-03-14 01:03:25,102 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 201 transitions, 3671 flow [2025-03-14 01:03:25,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-14 01:03:25,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-03-14 01:03:25,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 114 transitions. [2025-03-14 01:03:25,102 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.37254901960784315 [2025-03-14 01:03:25,102 INFO L175 Difference]: Start difference. First operand has 189 places, 178 transitions, 3091 flow. Second operand 9 states and 114 transitions. [2025-03-14 01:03:25,102 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 201 transitions, 3671 flow [2025-03-14 01:03:25,151 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 201 transitions, 3547 flow, removed 21 selfloop flow, removed 6 redundant places. [2025-03-14 01:03:25,154 INFO L231 Difference]: Finished difference. Result has 193 places, 181 transitions, 3184 flow [2025-03-14 01:03:25,154 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=2975, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3184, PETRI_PLACES=193, PETRI_TRANSITIONS=181} [2025-03-14 01:03:25,155 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 163 predicate places. [2025-03-14 01:03:25,155 INFO L471 AbstractCegarLoop]: Abstraction has has 193 places, 181 transitions, 3184 flow [2025-03-14 01:03:25,155 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:03:25,155 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:03:25,155 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:03:25,155 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2025-03-14 01:03:25,155 INFO L396 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-14 01:03:25,155 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:03:25,156 INFO L85 PathProgramCache]: Analyzing trace with hash 501403737, now seen corresponding path program 7 times [2025-03-14 01:03:25,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:03:25,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904687707] [2025-03-14 01:03:25,156 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-14 01:03:25,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:03:25,159 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 26 statements into 1 equivalence classes. [2025-03-14 01:03:25,163 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 26 of 26 statements. [2025-03-14 01:03:25,163 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-14 01:03:25,163 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:03:25,312 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-14 01:03:25,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:03:25,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904687707] [2025-03-14 01:03:25,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1904687707] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-14 01:03:25,312 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-14 01:03:25,312 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-03-14 01:03:25,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154812486] [2025-03-14 01:03:25,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 01:03:25,312 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-03-14 01:03:25,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:03:25,313 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-03-14 01:03:25,313 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2025-03-14 01:03:25,322 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 34 [2025-03-14 01:03:25,323 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 181 transitions, 3184 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:03:25,323 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:03:25,323 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 34 [2025-03-14 01:03:25,323 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:03:25,663 INFO L124 PetriNetUnfolderBase]: 1090/1877 cut-off events. [2025-03-14 01:03:25,663 INFO L125 PetriNetUnfolderBase]: For 22721/22802 co-relation queries the response was YES. [2025-03-14 01:03:25,673 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12683 conditions, 1877 events. 1090/1877 cut-off events. For 22721/22802 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 10089 event pairs, 427 based on Foata normal form. 6/1879 useless extension candidates. Maximal degree in co-relation 12617. Up to 1389 conditions per place. [2025-03-14 01:03:25,680 INFO L140 encePairwiseOnDemand]: 22/34 looper letters, 126 selfloop transitions, 63 changer transitions 5/197 dead transitions. [2025-03-14 01:03:25,680 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 197 transitions, 3675 flow [2025-03-14 01:03:25,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-14 01:03:25,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-03-14 01:03:25,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 116 transitions. [2025-03-14 01:03:25,681 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3411764705882353 [2025-03-14 01:03:25,681 INFO L175 Difference]: Start difference. First operand has 193 places, 181 transitions, 3184 flow. Second operand 10 states and 116 transitions. [2025-03-14 01:03:25,681 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 197 transitions, 3675 flow [2025-03-14 01:03:25,749 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 197 transitions, 3535 flow, removed 4 selfloop flow, removed 7 redundant places. [2025-03-14 01:03:25,752 INFO L231 Difference]: Finished difference. Result has 195 places, 180 transitions, 3140 flow [2025-03-14 01:03:25,752 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=3046, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3140, PETRI_PLACES=195, PETRI_TRANSITIONS=180} [2025-03-14 01:03:25,753 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 165 predicate places. [2025-03-14 01:03:25,753 INFO L471 AbstractCegarLoop]: Abstraction has has 195 places, 180 transitions, 3140 flow [2025-03-14 01:03:25,753 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:03:25,753 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:03:25,753 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:03:25,753 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2025-03-14 01:03:25,753 INFO L396 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-14 01:03:25,754 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:03:25,754 INFO L85 PathProgramCache]: Analyzing trace with hash 592440303, now seen corresponding path program 8 times [2025-03-14 01:03:25,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:03:25,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [594440721] [2025-03-14 01:03:25,754 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-14 01:03:25,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:03:25,759 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 26 statements into 2 equivalence classes. [2025-03-14 01:03:25,765 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 26 of 26 statements. [2025-03-14 01:03:25,765 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-14 01:03:25,765 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:03:25,946 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-14 01:03:25,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:03:25,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [594440721] [2025-03-14 01:03:25,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [594440721] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-14 01:03:25,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1818803839] [2025-03-14 01:03:25,947 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-14 01:03:25,947 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-14 01:03:25,947 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-14 01:03:25,949 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-14 01:03:25,951 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2025-03-14 01:03:26,005 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 26 statements into 2 equivalence classes. [2025-03-14 01:03:26,023 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 26 of 26 statements. [2025-03-14 01:03:26,024 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-14 01:03:26,024 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:03:26,025 INFO L256 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 25 conjuncts are in the unsatisfiable core [2025-03-14 01:03:26,026 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-14 01:03:26,074 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-14 01:03:26,074 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 21 [2025-03-14 01:03:26,089 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-14 01:03:26,089 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-14 01:03:26,147 INFO L349 Elim1Store]: treesize reduction 28, result has 63.6 percent of original size [2025-03-14 01:03:26,148 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 40 treesize of output 56 [2025-03-14 01:03:26,169 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-14 01:03:26,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1818803839] provided 1 perfect and 1 imperfect interpolant sequences [2025-03-14 01:03:26,170 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-03-14 01:03:26,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9, 9] total 17 [2025-03-14 01:03:26,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460397] [2025-03-14 01:03:26,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 01:03:26,170 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-14 01:03:26,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:03:26,171 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-14 01:03:26,171 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272 [2025-03-14 01:03:26,183 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 34 [2025-03-14 01:03:26,183 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 180 transitions, 3140 flow. Second operand has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:03:26,183 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:03:26,183 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 34 [2025-03-14 01:03:26,184 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:03:26,523 INFO L124 PetriNetUnfolderBase]: 1101/1931 cut-off events. [2025-03-14 01:03:26,523 INFO L125 PetriNetUnfolderBase]: For 22495/22564 co-relation queries the response was YES. [2025-03-14 01:03:26,533 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12498 conditions, 1931 events. 1101/1931 cut-off events. For 22495/22564 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 10562 event pairs, 414 based on Foata normal form. 16/1943 useless extension candidates. Maximal degree in co-relation 12433. Up to 1310 conditions per place. [2025-03-14 01:03:26,539 INFO L140 encePairwiseOnDemand]: 24/34 looper letters, 145 selfloop transitions, 64 changer transitions 0/212 dead transitions. [2025-03-14 01:03:26,539 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 212 transitions, 3746 flow [2025-03-14 01:03:26,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-14 01:03:26,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-03-14 01:03:26,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 124 transitions. [2025-03-14 01:03:26,539 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.40522875816993464 [2025-03-14 01:03:26,539 INFO L175 Difference]: Start difference. First operand has 195 places, 180 transitions, 3140 flow. Second operand 9 states and 124 transitions. [2025-03-14 01:03:26,540 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 212 transitions, 3746 flow [2025-03-14 01:03:26,606 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 212 transitions, 3614 flow, removed 3 selfloop flow, removed 7 redundant places. [2025-03-14 01:03:26,609 INFO L231 Difference]: Finished difference. Result has 196 places, 181 transitions, 3167 flow [2025-03-14 01:03:26,609 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=3008, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3167, PETRI_PLACES=196, PETRI_TRANSITIONS=181} [2025-03-14 01:03:26,610 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 166 predicate places. [2025-03-14 01:03:26,610 INFO L471 AbstractCegarLoop]: Abstraction has has 196 places, 181 transitions, 3167 flow [2025-03-14 01:03:26,610 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:03:26,610 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:03:26,610 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:03:26,616 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2025-03-14 01:03:26,810 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable50 [2025-03-14 01:03:26,810 INFO L396 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-14 01:03:26,811 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:03:26,811 INFO L85 PathProgramCache]: Analyzing trace with hash 1260800609, now seen corresponding path program 9 times [2025-03-14 01:03:26,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:03:26,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029081515] [2025-03-14 01:03:26,811 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-14 01:03:26,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:03:26,815 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 26 statements into 2 equivalence classes. [2025-03-14 01:03:26,818 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 24 of 26 statements. [2025-03-14 01:03:26,818 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-03-14 01:03:26,818 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:03:26,952 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-14 01:03:26,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:03:26,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1029081515] [2025-03-14 01:03:26,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1029081515] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-14 01:03:26,952 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-14 01:03:26,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-03-14 01:03:26,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443538420] [2025-03-14 01:03:26,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 01:03:26,953 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-03-14 01:03:26,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:03:26,954 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-03-14 01:03:26,954 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2025-03-14 01:03:26,967 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 34 [2025-03-14 01:03:26,968 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 181 transitions, 3167 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:03:26,968 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:03:26,968 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 34 [2025-03-14 01:03:26,968 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:03:27,262 INFO L124 PetriNetUnfolderBase]: 1102/1936 cut-off events. [2025-03-14 01:03:27,262 INFO L125 PetriNetUnfolderBase]: For 21759/21830 co-relation queries the response was YES. [2025-03-14 01:03:27,271 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12574 conditions, 1936 events. 1102/1936 cut-off events. For 21759/21830 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 10668 event pairs, 459 based on Foata normal form. 6/1938 useless extension candidates. Maximal degree in co-relation 12507. Up to 1439 conditions per place. [2025-03-14 01:03:27,277 INFO L140 encePairwiseOnDemand]: 22/34 looper letters, 126 selfloop transitions, 63 changer transitions 5/197 dead transitions. [2025-03-14 01:03:27,277 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 197 transitions, 3658 flow [2025-03-14 01:03:27,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-14 01:03:27,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-03-14 01:03:27,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 115 transitions. [2025-03-14 01:03:27,278 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3382352941176471 [2025-03-14 01:03:27,278 INFO L175 Difference]: Start difference. First operand has 196 places, 181 transitions, 3167 flow. Second operand 10 states and 115 transitions. [2025-03-14 01:03:27,278 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 197 transitions, 3658 flow [2025-03-14 01:03:27,341 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 197 transitions, 3548 flow, removed 7 selfloop flow, removed 4 redundant places. [2025-03-14 01:03:27,345 INFO L231 Difference]: Finished difference. Result has 201 places, 180 transitions, 3159 flow [2025-03-14 01:03:27,345 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=3058, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3159, PETRI_PLACES=201, PETRI_TRANSITIONS=180} [2025-03-14 01:03:27,345 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 171 predicate places. [2025-03-14 01:03:27,345 INFO L471 AbstractCegarLoop]: Abstraction has has 201 places, 180 transitions, 3159 flow [2025-03-14 01:03:27,345 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:03:27,345 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:03:27,345 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:03:27,345 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2025-03-14 01:03:27,345 INFO L396 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-14 01:03:27,346 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:03:27,346 INFO L85 PathProgramCache]: Analyzing trace with hash 262638737, now seen corresponding path program 10 times [2025-03-14 01:03:27,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:03:27,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343388997] [2025-03-14 01:03:27,346 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-14 01:03:27,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:03:27,350 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 26 statements into 2 equivalence classes. [2025-03-14 01:03:27,352 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 20 of 26 statements. [2025-03-14 01:03:27,352 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-03-14 01:03:27,352 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:03:27,403 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-14 01:03:27,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:03:27,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1343388997] [2025-03-14 01:03:27,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1343388997] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-14 01:03:27,404 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-14 01:03:27,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-14 01:03:27,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773619789] [2025-03-14 01:03:27,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 01:03:27,404 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-14 01:03:27,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:03:27,405 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-14 01:03:27,405 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2025-03-14 01:03:27,415 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 34 [2025-03-14 01:03:27,415 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 180 transitions, 3159 flow. Second operand has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:03:27,416 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:03:27,416 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 34 [2025-03-14 01:03:27,416 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:03:27,699 INFO L124 PetriNetUnfolderBase]: 1040/1805 cut-off events. [2025-03-14 01:03:27,700 INFO L125 PetriNetUnfolderBase]: For 20614/20693 co-relation queries the response was YES. [2025-03-14 01:03:27,709 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11886 conditions, 1805 events. 1040/1805 cut-off events. For 20614/20693 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 9676 event pairs, 418 based on Foata normal form. 6/1807 useless extension candidates. Maximal degree in co-relation 11819. Up to 1335 conditions per place. [2025-03-14 01:03:27,716 INFO L140 encePairwiseOnDemand]: 25/34 looper letters, 126 selfloop transitions, 54 changer transitions 11/194 dead transitions. [2025-03-14 01:03:27,716 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 194 transitions, 3545 flow [2025-03-14 01:03:27,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-14 01:03:27,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-03-14 01:03:27,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 110 transitions. [2025-03-14 01:03:27,717 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.35947712418300654 [2025-03-14 01:03:27,717 INFO L175 Difference]: Start difference. First operand has 201 places, 180 transitions, 3159 flow. Second operand 9 states and 110 transitions. [2025-03-14 01:03:27,717 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 194 transitions, 3545 flow [2025-03-14 01:03:27,781 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 194 transitions, 3421 flow, removed 1 selfloop flow, removed 7 redundant places. [2025-03-14 01:03:27,784 INFO L231 Difference]: Finished difference. Result has 200 places, 172 transitions, 2963 flow [2025-03-14 01:03:27,784 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=2962, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2963, PETRI_PLACES=200, PETRI_TRANSITIONS=172} [2025-03-14 01:03:27,784 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 170 predicate places. [2025-03-14 01:03:27,784 INFO L471 AbstractCegarLoop]: Abstraction has has 200 places, 172 transitions, 2963 flow [2025-03-14 01:03:27,785 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:03:27,785 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:03:27,785 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:03:27,785 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2025-03-14 01:03:27,785 INFO L396 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-14 01:03:27,785 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:03:27,785 INFO L85 PathProgramCache]: Analyzing trace with hash -1218271142, now seen corresponding path program 8 times [2025-03-14 01:03:27,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:03:27,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760525556] [2025-03-14 01:03:27,785 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-14 01:03:27,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:03:27,791 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 26 statements into 2 equivalence classes. [2025-03-14 01:03:27,795 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 24 of 26 statements. [2025-03-14 01:03:27,795 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-14 01:03:27,795 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:03:27,957 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-14 01:03:27,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:03:27,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760525556] [2025-03-14 01:03:27,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1760525556] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-14 01:03:27,957 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-14 01:03:27,957 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-03-14 01:03:27,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678621106] [2025-03-14 01:03:27,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 01:03:27,957 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-03-14 01:03:27,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:03:27,958 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-03-14 01:03:27,958 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2025-03-14 01:03:27,970 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 34 [2025-03-14 01:03:27,970 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 172 transitions, 2963 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:03:27,970 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:03:27,970 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 34 [2025-03-14 01:03:27,971 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:03:28,243 INFO L124 PetriNetUnfolderBase]: 1006/1747 cut-off events. [2025-03-14 01:03:28,244 INFO L125 PetriNetUnfolderBase]: For 19330/19409 co-relation queries the response was YES. [2025-03-14 01:03:28,251 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11376 conditions, 1747 events. 1006/1747 cut-off events. For 19330/19409 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 9298 event pairs, 412 based on Foata normal form. 7/1750 useless extension candidates. Maximal degree in co-relation 11309. Up to 1306 conditions per place. [2025-03-14 01:03:28,256 INFO L140 encePairwiseOnDemand]: 24/34 looper letters, 122 selfloop transitions, 54 changer transitions 6/185 dead transitions. [2025-03-14 01:03:28,256 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 185 transitions, 3330 flow [2025-03-14 01:03:28,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-14 01:03:28,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-03-14 01:03:28,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 113 transitions. [2025-03-14 01:03:28,257 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3323529411764706 [2025-03-14 01:03:28,257 INFO L175 Difference]: Start difference. First operand has 200 places, 172 transitions, 2963 flow. Second operand 10 states and 113 transitions. [2025-03-14 01:03:28,257 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 185 transitions, 3330 flow [2025-03-14 01:03:28,304 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 185 transitions, 3078 flow, removed 5 selfloop flow, removed 12 redundant places. [2025-03-14 01:03:28,307 INFO L231 Difference]: Finished difference. Result has 190 places, 167 transitions, 2699 flow [2025-03-14 01:03:28,307 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=2638, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2699, PETRI_PLACES=190, PETRI_TRANSITIONS=167} [2025-03-14 01:03:28,307 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 160 predicate places. [2025-03-14 01:03:28,307 INFO L471 AbstractCegarLoop]: Abstraction has has 190 places, 167 transitions, 2699 flow [2025-03-14 01:03:28,307 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:03:28,307 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:03:28,307 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:03:28,307 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2025-03-14 01:03:28,307 INFO L396 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-14 01:03:28,308 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:03:28,308 INFO L85 PathProgramCache]: Analyzing trace with hash -1710866904, now seen corresponding path program 9 times [2025-03-14 01:03:28,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:03:28,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994006537] [2025-03-14 01:03:28,308 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-14 01:03:28,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:03:28,313 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 26 statements into 2 equivalence classes. [2025-03-14 01:03:28,317 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 24 of 26 statements. [2025-03-14 01:03:28,318 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-03-14 01:03:28,318 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:03:28,450 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-14 01:03:28,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:03:28,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994006537] [2025-03-14 01:03:28,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1994006537] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-14 01:03:28,450 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-14 01:03:28,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-03-14 01:03:28,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124548857] [2025-03-14 01:03:28,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 01:03:28,450 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-03-14 01:03:28,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:03:28,450 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-03-14 01:03:28,451 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2025-03-14 01:03:28,465 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 34 [2025-03-14 01:03:28,466 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 167 transitions, 2699 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:03:28,466 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:03:28,466 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 34 [2025-03-14 01:03:28,466 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:03:28,730 INFO L124 PetriNetUnfolderBase]: 996/1730 cut-off events. [2025-03-14 01:03:28,730 INFO L125 PetriNetUnfolderBase]: For 16016/16095 co-relation queries the response was YES. [2025-03-14 01:03:28,739 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11053 conditions, 1730 events. 996/1730 cut-off events. For 16016/16095 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 9164 event pairs, 410 based on Foata normal form. 7/1733 useless extension candidates. Maximal degree in co-relation 10989. Up to 1294 conditions per place. [2025-03-14 01:03:28,744 INFO L140 encePairwiseOnDemand]: 24/34 looper letters, 121 selfloop transitions, 51 changer transitions 6/181 dead transitions. [2025-03-14 01:03:28,744 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 181 transitions, 3088 flow [2025-03-14 01:03:28,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-14 01:03:28,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-03-14 01:03:28,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 112 transitions. [2025-03-14 01:03:28,744 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.32941176470588235 [2025-03-14 01:03:28,744 INFO L175 Difference]: Start difference. First operand has 190 places, 167 transitions, 2699 flow. Second operand 10 states and 112 transitions. [2025-03-14 01:03:28,745 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 181 transitions, 3088 flow [2025-03-14 01:03:28,788 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 181 transitions, 2974 flow, removed 0 selfloop flow, removed 8 redundant places. [2025-03-14 01:03:28,791 INFO L231 Difference]: Finished difference. Result has 189 places, 163 transitions, 2603 flow [2025-03-14 01:03:28,791 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=2542, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2603, PETRI_PLACES=189, PETRI_TRANSITIONS=163} [2025-03-14 01:03:28,791 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 159 predicate places. [2025-03-14 01:03:28,791 INFO L471 AbstractCegarLoop]: Abstraction has has 189 places, 163 transitions, 2603 flow [2025-03-14 01:03:28,791 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:03:28,791 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:03:28,792 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:03:28,792 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2025-03-14 01:03:28,792 INFO L396 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-14 01:03:28,792 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:03:28,792 INFO L85 PathProgramCache]: Analyzing trace with hash 1543864594, now seen corresponding path program 10 times [2025-03-14 01:03:28,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:03:28,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [857918114] [2025-03-14 01:03:28,792 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-14 01:03:28,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:03:28,796 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 26 statements into 2 equivalence classes. [2025-03-14 01:03:28,798 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 20 of 26 statements. [2025-03-14 01:03:28,798 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-03-14 01:03:28,798 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:03:28,853 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-14 01:03:28,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:03:28,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [857918114] [2025-03-14 01:03:28,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [857918114] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-14 01:03:28,853 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-14 01:03:28,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-14 01:03:28,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481078565] [2025-03-14 01:03:28,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 01:03:28,854 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-14 01:03:28,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:03:28,855 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-14 01:03:28,855 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2025-03-14 01:03:28,869 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 34 [2025-03-14 01:03:28,870 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 163 transitions, 2603 flow. Second operand has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:03:28,870 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:03:28,870 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 34 [2025-03-14 01:03:28,870 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:03:29,147 INFO L124 PetriNetUnfolderBase]: 939/1626 cut-off events. [2025-03-14 01:03:29,148 INFO L125 PetriNetUnfolderBase]: For 14795/14864 co-relation queries the response was YES. [2025-03-14 01:03:29,158 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10405 conditions, 1626 events. 939/1626 cut-off events. For 14795/14864 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 8451 event pairs, 387 based on Foata normal form. 7/1629 useless extension candidates. Maximal degree in co-relation 10341. Up to 1210 conditions per place. [2025-03-14 01:03:29,163 INFO L140 encePairwiseOnDemand]: 26/34 looper letters, 120 selfloop transitions, 43 changer transitions 13/179 dead transitions. [2025-03-14 01:03:29,163 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 179 transitions, 2967 flow [2025-03-14 01:03:29,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-14 01:03:29,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-03-14 01:03:29,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 109 transitions. [2025-03-14 01:03:29,164 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3562091503267974 [2025-03-14 01:03:29,164 INFO L175 Difference]: Start difference. First operand has 189 places, 163 transitions, 2603 flow. Second operand 9 states and 109 transitions. [2025-03-14 01:03:29,164 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 179 transitions, 2967 flow [2025-03-14 01:03:29,209 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 179 transitions, 2847 flow, removed 5 selfloop flow, removed 9 redundant places. [2025-03-14 01:03:29,211 INFO L231 Difference]: Finished difference. Result has 183 places, 155 transitions, 2419 flow [2025-03-14 01:03:29,212 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=2414, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2419, PETRI_PLACES=183, PETRI_TRANSITIONS=155} [2025-03-14 01:03:29,212 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 153 predicate places. [2025-03-14 01:03:29,212 INFO L471 AbstractCegarLoop]: Abstraction has has 183 places, 155 transitions, 2419 flow [2025-03-14 01:03:29,212 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:03:29,212 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:03:29,212 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:03:29,212 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2025-03-14 01:03:29,212 INFO L396 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-14 01:03:29,213 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:03:29,213 INFO L85 PathProgramCache]: Analyzing trace with hash 1145606378, now seen corresponding path program 11 times [2025-03-14 01:03:29,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:03:29,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369876748] [2025-03-14 01:03:29,213 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-14 01:03:29,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:03:29,218 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 26 statements into 2 equivalence classes. [2025-03-14 01:03:29,223 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 26 of 26 statements. [2025-03-14 01:03:29,224 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-14 01:03:29,224 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:03:29,373 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-14 01:03:29,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:03:29,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369876748] [2025-03-14 01:03:29,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1369876748] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-14 01:03:29,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1097786179] [2025-03-14 01:03:29,373 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-14 01:03:29,373 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-14 01:03:29,373 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-14 01:03:29,376 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-14 01:03:29,377 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2025-03-14 01:03:29,433 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 26 statements into 2 equivalence classes. [2025-03-14 01:03:29,451 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 26 of 26 statements. [2025-03-14 01:03:29,451 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-14 01:03:29,451 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:03:29,452 INFO L256 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 21 conjuncts are in the unsatisfiable core [2025-03-14 01:03:29,453 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-14 01:03:29,529 INFO L349 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2025-03-14 01:03:29,529 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 10 [2025-03-14 01:03:29,538 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-14 01:03:29,538 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-14 01:03:29,601 INFO L349 Elim1Store]: treesize reduction 28, result has 59.4 percent of original size [2025-03-14 01:03:29,602 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 32 treesize of output 48 [2025-03-14 01:03:29,611 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-14 01:03:29,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1097786179] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-14 01:03:29,611 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-14 01:03:29,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 17 [2025-03-14 01:03:29,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957668439] [2025-03-14 01:03:29,612 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-14 01:03:29,612 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-03-14 01:03:29,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:03:29,612 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-03-14 01:03:29,612 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2025-03-14 01:03:29,635 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 34 [2025-03-14 01:03:29,636 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 155 transitions, 2419 flow. Second operand has 17 states, 17 states have (on average 7.764705882352941) internal successors, (132), 17 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:03:29,636 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:03:29,636 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 34 [2025-03-14 01:03:29,636 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:03:30,008 INFO L124 PetriNetUnfolderBase]: 962/1681 cut-off events. [2025-03-14 01:03:30,008 INFO L125 PetriNetUnfolderBase]: For 15058/15088 co-relation queries the response was YES. [2025-03-14 01:03:30,015 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10662 conditions, 1681 events. 962/1681 cut-off events. For 15058/15088 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 8895 event pairs, 126 based on Foata normal form. 10/1691 useless extension candidates. Maximal degree in co-relation 10599. Up to 698 conditions per place. [2025-03-14 01:03:30,020 INFO L140 encePairwiseOnDemand]: 20/34 looper letters, 148 selfloop transitions, 66 changer transitions 2/219 dead transitions. [2025-03-14 01:03:30,020 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 219 transitions, 3480 flow [2025-03-14 01:03:30,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-03-14 01:03:30,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2025-03-14 01:03:30,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 132 transitions. [2025-03-14 01:03:30,020 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.35294117647058826 [2025-03-14 01:03:30,021 INFO L175 Difference]: Start difference. First operand has 183 places, 155 transitions, 2419 flow. Second operand 11 states and 132 transitions. [2025-03-14 01:03:30,021 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 219 transitions, 3480 flow [2025-03-14 01:03:30,067 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 219 transitions, 3343 flow, removed 7 selfloop flow, removed 11 redundant places. [2025-03-14 01:03:30,069 INFO L231 Difference]: Finished difference. Result has 177 places, 159 transitions, 2520 flow [2025-03-14 01:03:30,069 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=2294, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2520, PETRI_PLACES=177, PETRI_TRANSITIONS=159} [2025-03-14 01:03:30,070 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 147 predicate places. [2025-03-14 01:03:30,070 INFO L471 AbstractCegarLoop]: Abstraction has has 177 places, 159 transitions, 2520 flow [2025-03-14 01:03:30,070 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 7.764705882352941) internal successors, (132), 17 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:03:30,070 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:03:30,070 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:03:30,076 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2025-03-14 01:03:30,270 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable56 [2025-03-14 01:03:30,270 INFO L396 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-14 01:03:30,271 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:03:30,271 INFO L85 PathProgramCache]: Analyzing trace with hash 2135788781, now seen corresponding path program 11 times [2025-03-14 01:03:30,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:03:30,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [520494540] [2025-03-14 01:03:30,271 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-14 01:03:30,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:03:30,276 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 26 statements into 2 equivalence classes. [2025-03-14 01:03:30,281 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 26 of 26 statements. [2025-03-14 01:03:30,281 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-14 01:03:30,281 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:03:30,428 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-14 01:03:30,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:03:30,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [520494540] [2025-03-14 01:03:30,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [520494540] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-14 01:03:30,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [352171021] [2025-03-14 01:03:30,428 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-14 01:03:30,429 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-14 01:03:30,429 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-14 01:03:30,431 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-14 01:03:30,433 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2025-03-14 01:03:30,491 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 26 statements into 2 equivalence classes. [2025-03-14 01:03:30,509 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 26 of 26 statements. [2025-03-14 01:03:30,509 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-14 01:03:30,509 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:03:30,510 INFO L256 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 19 conjuncts are in the unsatisfiable core [2025-03-14 01:03:30,511 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-14 01:03:30,588 INFO L349 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2025-03-14 01:03:30,588 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 10 [2025-03-14 01:03:30,597 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-14 01:03:30,597 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-14 01:03:30,663 INFO L349 Elim1Store]: treesize reduction 28, result has 63.6 percent of original size [2025-03-14 01:03:30,663 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 40 treesize of output 56 [2025-03-14 01:03:30,689 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-14 01:03:30,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [352171021] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-14 01:03:30,690 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-14 01:03:30,690 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 18 [2025-03-14 01:03:30,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131320947] [2025-03-14 01:03:30,690 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-14 01:03:30,690 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-03-14 01:03:30,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:03:30,691 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-03-14 01:03:30,691 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2025-03-14 01:03:30,746 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 34 [2025-03-14 01:03:30,747 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 159 transitions, 2520 flow. Second operand has 18 states, 18 states have (on average 7.611111111111111) internal successors, (137), 18 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:03:30,747 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:03:30,747 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 34 [2025-03-14 01:03:30,747 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:03:31,140 INFO L124 PetriNetUnfolderBase]: 985/1707 cut-off events. [2025-03-14 01:03:31,140 INFO L125 PetriNetUnfolderBase]: For 16397/16465 co-relation queries the response was YES. [2025-03-14 01:03:31,147 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11034 conditions, 1707 events. 985/1707 cut-off events. For 16397/16465 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 8908 event pairs, 344 based on Foata normal form. 16/1723 useless extension candidates. Maximal degree in co-relation 10974. Up to 1105 conditions per place. [2025-03-14 01:03:31,152 INFO L140 encePairwiseOnDemand]: 19/34 looper letters, 127 selfloop transitions, 67 changer transitions 0/197 dead transitions. [2025-03-14 01:03:31,152 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 197 transitions, 3268 flow [2025-03-14 01:03:31,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-03-14 01:03:31,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2025-03-14 01:03:31,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 130 transitions. [2025-03-14 01:03:31,153 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.34759358288770054 [2025-03-14 01:03:31,153 INFO L175 Difference]: Start difference. First operand has 177 places, 159 transitions, 2520 flow. Second operand 11 states and 130 transitions. [2025-03-14 01:03:31,153 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 197 transitions, 3268 flow [2025-03-14 01:03:31,197 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 197 transitions, 3075 flow, removed 18 selfloop flow, removed 10 redundant places. [2025-03-14 01:03:31,200 INFO L231 Difference]: Finished difference. Result has 179 places, 164 transitions, 2590 flow [2025-03-14 01:03:31,200 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=2345, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2590, PETRI_PLACES=179, PETRI_TRANSITIONS=164} [2025-03-14 01:03:31,200 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 149 predicate places. [2025-03-14 01:03:31,200 INFO L471 AbstractCegarLoop]: Abstraction has has 179 places, 164 transitions, 2590 flow [2025-03-14 01:03:31,200 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 7.611111111111111) internal successors, (137), 18 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:03:31,200 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:03:31,201 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:03:31,206 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2025-03-14 01:03:31,401 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-14 01:03:31,401 INFO L396 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-14 01:03:31,401 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:03:31,401 INFO L85 PathProgramCache]: Analyzing trace with hash -157237408, now seen corresponding path program 12 times [2025-03-14 01:03:31,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:03:31,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651304865] [2025-03-14 01:03:31,402 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-14 01:03:31,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:03:31,407 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 26 statements into 2 equivalence classes. [2025-03-14 01:03:31,410 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) and asserted 24 of 26 statements. [2025-03-14 01:03:31,410 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2025-03-14 01:03:31,410 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:03:31,541 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-14 01:03:31,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:03:31,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651304865] [2025-03-14 01:03:31,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1651304865] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-14 01:03:31,542 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-14 01:03:31,542 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-03-14 01:03:31,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321247875] [2025-03-14 01:03:31,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 01:03:31,542 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-03-14 01:03:31,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:03:31,542 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-03-14 01:03:31,542 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2025-03-14 01:03:31,555 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 34 [2025-03-14 01:03:31,556 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 164 transitions, 2590 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:03:31,556 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:03:31,556 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 34 [2025-03-14 01:03:31,556 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:03:31,877 INFO L124 PetriNetUnfolderBase]: 1063/1825 cut-off events. [2025-03-14 01:03:31,877 INFO L125 PetriNetUnfolderBase]: For 17993/18069 co-relation queries the response was YES. [2025-03-14 01:03:31,883 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12040 conditions, 1825 events. 1063/1825 cut-off events. For 17993/18069 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 9693 event pairs, 301 based on Foata normal form. 10/1835 useless extension candidates. Maximal degree in co-relation 11980. Up to 1129 conditions per place. [2025-03-14 01:03:31,888 INFO L140 encePairwiseOnDemand]: 22/34 looper letters, 143 selfloop transitions, 72 changer transitions 0/218 dead transitions. [2025-03-14 01:03:31,888 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 218 transitions, 3672 flow [2025-03-14 01:03:31,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-14 01:03:31,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-03-14 01:03:31,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 118 transitions. [2025-03-14 01:03:31,889 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.38562091503267976 [2025-03-14 01:03:31,889 INFO L175 Difference]: Start difference. First operand has 179 places, 164 transitions, 2590 flow. Second operand 9 states and 118 transitions. [2025-03-14 01:03:31,889 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 218 transitions, 3672 flow [2025-03-14 01:03:31,935 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 218 transitions, 3540 flow, removed 17 selfloop flow, removed 7 redundant places. [2025-03-14 01:03:31,937 INFO L231 Difference]: Finished difference. Result has 182 places, 171 transitions, 2792 flow [2025-03-14 01:03:31,938 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=2466, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2792, PETRI_PLACES=182, PETRI_TRANSITIONS=171} [2025-03-14 01:03:31,938 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 152 predicate places. [2025-03-14 01:03:31,938 INFO L471 AbstractCegarLoop]: Abstraction has has 182 places, 171 transitions, 2792 flow [2025-03-14 01:03:31,938 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:03:31,938 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:03:31,938 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:03:31,938 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2025-03-14 01:03:31,938 INFO L396 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-14 01:03:31,939 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:03:31,939 INFO L85 PathProgramCache]: Analyzing trace with hash 1554135964, now seen corresponding path program 13 times [2025-03-14 01:03:31,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:03:31,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412272111] [2025-03-14 01:03:31,939 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-14 01:03:31,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:03:31,943 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 26 statements into 1 equivalence classes. [2025-03-14 01:03:31,947 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 26 of 26 statements. [2025-03-14 01:03:31,947 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-14 01:03:31,947 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:03:32,085 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-14 01:03:32,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:03:32,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412272111] [2025-03-14 01:03:32,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [412272111] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-14 01:03:32,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2049996618] [2025-03-14 01:03:32,086 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-14 01:03:32,086 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-14 01:03:32,086 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-14 01:03:32,088 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-14 01:03:32,089 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2025-03-14 01:03:32,143 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 26 statements into 1 equivalence classes. [2025-03-14 01:03:32,158 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 26 of 26 statements. [2025-03-14 01:03:32,158 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-14 01:03:32,158 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:03:32,159 INFO L256 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 15 conjuncts are in the unsatisfiable core [2025-03-14 01:03:32,160 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-14 01:03:32,194 INFO L349 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2025-03-14 01:03:32,194 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 10 [2025-03-14 01:03:32,200 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-14 01:03:32,200 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-14 01:03:32,251 INFO L349 Elim1Store]: treesize reduction 28, result has 63.6 percent of original size [2025-03-14 01:03:32,252 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 40 treesize of output 56 [2025-03-14 01:03:32,278 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-14 01:03:32,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2049996618] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-14 01:03:32,278 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-14 01:03:32,278 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 7] total 18 [2025-03-14 01:03:32,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309696506] [2025-03-14 01:03:32,278 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-14 01:03:32,278 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-03-14 01:03:32,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:03:32,279 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-03-14 01:03:32,279 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=245, Unknown=0, NotChecked=0, Total=306 [2025-03-14 01:03:32,317 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 34 [2025-03-14 01:03:32,317 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 171 transitions, 2792 flow. Second operand has 18 states, 18 states have (on average 7.5) internal successors, (135), 18 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:03:32,317 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:03:32,317 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 34 [2025-03-14 01:03:32,317 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:03:32,703 INFO L124 PetriNetUnfolderBase]: 1080/1854 cut-off events. [2025-03-14 01:03:32,703 INFO L125 PetriNetUnfolderBase]: For 20259/20333 co-relation queries the response was YES. [2025-03-14 01:03:32,711 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12414 conditions, 1854 events. 1080/1854 cut-off events. For 20259/20333 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 9800 event pairs, 355 based on Foata normal form. 10/1864 useless extension candidates. Maximal degree in co-relation 12352. Up to 1156 conditions per place. [2025-03-14 01:03:32,716 INFO L140 encePairwiseOnDemand]: 21/34 looper letters, 140 selfloop transitions, 71 changer transitions 1/215 dead transitions. [2025-03-14 01:03:32,716 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 215 transitions, 3775 flow [2025-03-14 01:03:32,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-14 01:03:32,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-03-14 01:03:32,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 124 transitions. [2025-03-14 01:03:32,717 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.36470588235294116 [2025-03-14 01:03:32,717 INFO L175 Difference]: Start difference. First operand has 182 places, 171 transitions, 2792 flow. Second operand 10 states and 124 transitions. [2025-03-14 01:03:32,717 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 215 transitions, 3775 flow [2025-03-14 01:03:32,765 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 215 transitions, 3650 flow, removed 19 selfloop flow, removed 5 redundant places. [2025-03-14 01:03:32,768 INFO L231 Difference]: Finished difference. Result has 189 places, 178 transitions, 3017 flow [2025-03-14 01:03:32,768 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=2669, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3017, PETRI_PLACES=189, PETRI_TRANSITIONS=178} [2025-03-14 01:03:32,768 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 159 predicate places. [2025-03-14 01:03:32,769 INFO L471 AbstractCegarLoop]: Abstraction has has 189 places, 178 transitions, 3017 flow [2025-03-14 01:03:32,769 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 7.5) internal successors, (135), 18 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:03:32,769 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:03:32,769 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:03:32,775 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2025-03-14 01:03:32,969 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-14 01:03:32,969 INFO L396 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-14 01:03:32,970 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:03:32,970 INFO L85 PathProgramCache]: Analyzing trace with hash -1794809864, now seen corresponding path program 14 times [2025-03-14 01:03:32,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:03:32,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2001358146] [2025-03-14 01:03:32,970 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-14 01:03:32,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:03:32,975 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 26 statements into 2 equivalence classes. [2025-03-14 01:03:32,978 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 24 of 26 statements. [2025-03-14 01:03:32,978 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-14 01:03:32,978 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:03:33,127 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-14 01:03:33,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:03:33,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2001358146] [2025-03-14 01:03:33,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2001358146] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-14 01:03:33,127 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-14 01:03:33,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-03-14 01:03:33,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395518943] [2025-03-14 01:03:33,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 01:03:33,128 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-03-14 01:03:33,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:03:33,128 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-03-14 01:03:33,128 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2025-03-14 01:03:33,141 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 34 [2025-03-14 01:03:33,141 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 178 transitions, 3017 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:03:33,141 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:03:33,141 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 34 [2025-03-14 01:03:33,141 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:03:33,420 INFO L124 PetriNetUnfolderBase]: 1057/1817 cut-off events. [2025-03-14 01:03:33,420 INFO L125 PetriNetUnfolderBase]: For 19103/19177 co-relation queries the response was YES. [2025-03-14 01:03:33,427 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12274 conditions, 1817 events. 1057/1817 cut-off events. For 19103/19177 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 9650 event pairs, 316 based on Foata normal form. 10/1827 useless extension candidates. Maximal degree in co-relation 12209. Up to 1194 conditions per place. [2025-03-14 01:03:33,432 INFO L140 encePairwiseOnDemand]: 22/34 looper letters, 138 selfloop transitions, 70 changer transitions 0/211 dead transitions. [2025-03-14 01:03:33,432 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 211 transitions, 3689 flow [2025-03-14 01:03:33,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-14 01:03:33,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-03-14 01:03:33,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 111 transitions. [2025-03-14 01:03:33,433 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3627450980392157 [2025-03-14 01:03:33,433 INFO L175 Difference]: Start difference. First operand has 189 places, 178 transitions, 3017 flow. Second operand 9 states and 111 transitions. [2025-03-14 01:03:33,433 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 211 transitions, 3689 flow [2025-03-14 01:03:33,480 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 211 transitions, 3549 flow, removed 41 selfloop flow, removed 6 redundant places. [2025-03-14 01:03:33,483 INFO L231 Difference]: Finished difference. Result has 193 places, 179 transitions, 3044 flow [2025-03-14 01:03:33,483 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=2877, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3044, PETRI_PLACES=193, PETRI_TRANSITIONS=179} [2025-03-14 01:03:33,484 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 163 predicate places. [2025-03-14 01:03:33,484 INFO L471 AbstractCegarLoop]: Abstraction has has 193 places, 179 transitions, 3044 flow [2025-03-14 01:03:33,484 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:03:33,484 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:03:33,484 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:03:33,484 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2025-03-14 01:03:33,484 INFO L396 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-14 01:03:33,484 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:03:33,484 INFO L85 PathProgramCache]: Analyzing trace with hash 258461790, now seen corresponding path program 15 times [2025-03-14 01:03:33,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:03:33,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391615842] [2025-03-14 01:03:33,485 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-14 01:03:33,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:03:33,492 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 26 statements into 2 equivalence classes. [2025-03-14 01:03:33,505 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 26 of 26 statements. [2025-03-14 01:03:33,506 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-03-14 01:03:33,506 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:03:33,648 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-14 01:03:33,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:03:33,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391615842] [2025-03-14 01:03:33,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1391615842] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-14 01:03:33,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [950126929] [2025-03-14 01:03:33,649 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-14 01:03:33,649 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-14 01:03:33,649 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-14 01:03:33,651 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-14 01:03:33,652 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2025-03-14 01:03:33,709 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 26 statements into 2 equivalence classes. [2025-03-14 01:03:33,724 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 26 of 26 statements. [2025-03-14 01:03:33,724 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-03-14 01:03:33,724 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:03:33,724 INFO L256 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 25 conjuncts are in the unsatisfiable core [2025-03-14 01:03:33,725 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-14 01:03:33,768 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-14 01:03:33,768 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 21 [2025-03-14 01:03:33,780 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-14 01:03:33,780 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-14 01:03:33,834 INFO L349 Elim1Store]: treesize reduction 28, result has 63.6 percent of original size [2025-03-14 01:03:33,834 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 40 treesize of output 56 [2025-03-14 01:03:33,853 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-14 01:03:33,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [950126929] provided 1 perfect and 1 imperfect interpolant sequences [2025-03-14 01:03:33,854 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-03-14 01:03:33,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9, 9] total 17 [2025-03-14 01:03:33,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56485034] [2025-03-14 01:03:33,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 01:03:33,854 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-14 01:03:33,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:03:33,854 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-14 01:03:33,854 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272 [2025-03-14 01:03:33,866 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 34 [2025-03-14 01:03:33,866 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 179 transitions, 3044 flow. Second operand has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:03:33,866 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:03:33,866 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 34 [2025-03-14 01:03:33,866 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:03:34,181 INFO L124 PetriNetUnfolderBase]: 1136/1957 cut-off events. [2025-03-14 01:03:34,182 INFO L125 PetriNetUnfolderBase]: For 20495/20579 co-relation queries the response was YES. [2025-03-14 01:03:34,193 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13351 conditions, 1957 events. 1136/1957 cut-off events. For 20495/20579 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 10556 event pairs, 383 based on Foata normal form. 10/1967 useless extension candidates. Maximal degree in co-relation 13286. Up to 1230 conditions per place. [2025-03-14 01:03:34,200 INFO L140 encePairwiseOnDemand]: 24/34 looper letters, 152 selfloop transitions, 72 changer transitions 0/227 dead transitions. [2025-03-14 01:03:34,200 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 227 transitions, 3974 flow [2025-03-14 01:03:34,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-14 01:03:34,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-03-14 01:03:34,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 126 transitions. [2025-03-14 01:03:34,201 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4117647058823529 [2025-03-14 01:03:34,201 INFO L175 Difference]: Start difference. First operand has 193 places, 179 transitions, 3044 flow. Second operand 9 states and 126 transitions. [2025-03-14 01:03:34,201 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 227 transitions, 3974 flow [2025-03-14 01:03:34,260 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 227 transitions, 3837 flow, removed 0 selfloop flow, removed 5 redundant places. [2025-03-14 01:03:34,263 INFO L231 Difference]: Finished difference. Result has 200 places, 189 transitions, 3323 flow [2025-03-14 01:03:34,264 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=2919, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3323, PETRI_PLACES=200, PETRI_TRANSITIONS=189} [2025-03-14 01:03:34,264 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 170 predicate places. [2025-03-14 01:03:34,264 INFO L471 AbstractCegarLoop]: Abstraction has has 200 places, 189 transitions, 3323 flow [2025-03-14 01:03:34,264 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:03:34,264 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:03:34,264 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:03:34,270 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2025-03-14 01:03:34,464 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61,25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-14 01:03:34,465 INFO L396 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-14 01:03:34,465 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:03:34,465 INFO L85 PathProgramCache]: Analyzing trace with hash -1221865516, now seen corresponding path program 16 times [2025-03-14 01:03:34,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:03:34,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553023043] [2025-03-14 01:03:34,465 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-14 01:03:34,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:03:34,470 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 26 statements into 2 equivalence classes. [2025-03-14 01:03:34,472 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 20 of 26 statements. [2025-03-14 01:03:34,472 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-03-14 01:03:34,472 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:03:34,520 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-14 01:03:34,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:03:34,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553023043] [2025-03-14 01:03:34,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [553023043] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-14 01:03:34,520 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-14 01:03:34,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-14 01:03:34,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584820545] [2025-03-14 01:03:34,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 01:03:34,520 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-14 01:03:34,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:03:34,521 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-14 01:03:34,521 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2025-03-14 01:03:34,528 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 34 [2025-03-14 01:03:34,528 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 189 transitions, 3323 flow. Second operand has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:03:34,528 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:03:34,528 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 34 [2025-03-14 01:03:34,528 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:03:34,811 INFO L124 PetriNetUnfolderBase]: 1126/1949 cut-off events. [2025-03-14 01:03:34,811 INFO L125 PetriNetUnfolderBase]: For 20036/20116 co-relation queries the response was YES. [2025-03-14 01:03:34,820 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13190 conditions, 1949 events. 1126/1949 cut-off events. For 20036/20116 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 10575 event pairs, 396 based on Foata normal form. 10/1959 useless extension candidates. Maximal degree in co-relation 13121. Up to 1311 conditions per place. [2025-03-14 01:03:34,853 INFO L140 encePairwiseOnDemand]: 24/34 looper letters, 137 selfloop transitions, 72 changer transitions 1/213 dead transitions. [2025-03-14 01:03:34,853 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 213 transitions, 3913 flow [2025-03-14 01:03:34,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-14 01:03:34,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-03-14 01:03:34,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 103 transitions. [2025-03-14 01:03:34,854 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4327731092436975 [2025-03-14 01:03:34,854 INFO L175 Difference]: Start difference. First operand has 200 places, 189 transitions, 3323 flow. Second operand 7 states and 103 transitions. [2025-03-14 01:03:34,854 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 213 transitions, 3913 flow [2025-03-14 01:03:34,903 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 213 transitions, 3749 flow, removed 24 selfloop flow, removed 7 redundant places. [2025-03-14 01:03:34,906 INFO L231 Difference]: Finished difference. Result has 201 places, 189 transitions, 3285 flow [2025-03-14 01:03:34,906 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=3122, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3285, PETRI_PLACES=201, PETRI_TRANSITIONS=189} [2025-03-14 01:03:34,906 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 171 predicate places. [2025-03-14 01:03:34,906 INFO L471 AbstractCegarLoop]: Abstraction has has 201 places, 189 transitions, 3285 flow [2025-03-14 01:03:34,907 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:03:34,907 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:03:34,907 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:03:34,907 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2025-03-14 01:03:34,907 INFO L396 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-14 01:03:34,907 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:03:34,907 INFO L85 PathProgramCache]: Analyzing trace with hash -1246180293, now seen corresponding path program 12 times [2025-03-14 01:03:34,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:03:34,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100371190] [2025-03-14 01:03:34,907 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-14 01:03:34,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:03:34,912 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 26 statements into 2 equivalence classes. [2025-03-14 01:03:34,922 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) and asserted 26 of 26 statements. [2025-03-14 01:03:34,923 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2025-03-14 01:03:34,923 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:03:35,101 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-14 01:03:35,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:03:35,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100371190] [2025-03-14 01:03:35,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [100371190] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-14 01:03:35,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1373500954] [2025-03-14 01:03:35,102 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-14 01:03:35,102 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-14 01:03:35,102 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-14 01:03:35,104 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-14 01:03:35,106 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2025-03-14 01:03:35,168 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 26 statements into 2 equivalence classes. [2025-03-14 01:03:35,185 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) and asserted 26 of 26 statements. [2025-03-14 01:03:35,185 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2025-03-14 01:03:35,185 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:03:35,186 INFO L256 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 25 conjuncts are in the unsatisfiable core [2025-03-14 01:03:35,186 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-14 01:03:35,238 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-14 01:03:35,239 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 21 [2025-03-14 01:03:35,252 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-14 01:03:35,253 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-14 01:03:35,308 INFO L349 Elim1Store]: treesize reduction 28, result has 59.4 percent of original size [2025-03-14 01:03:35,308 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 32 treesize of output 48 [2025-03-14 01:03:35,321 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-14 01:03:35,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1373500954] provided 1 perfect and 1 imperfect interpolant sequences [2025-03-14 01:03:35,321 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-03-14 01:03:35,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9, 9] total 18 [2025-03-14 01:03:35,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625719499] [2025-03-14 01:03:35,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 01:03:35,321 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-14 01:03:35,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:03:35,322 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-14 01:03:35,322 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=235, Unknown=0, NotChecked=0, Total=306 [2025-03-14 01:03:35,330 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 34 [2025-03-14 01:03:35,330 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 189 transitions, 3285 flow. Second operand has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:03:35,330 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:03:35,330 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 34 [2025-03-14 01:03:35,330 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:03:35,700 INFO L124 PetriNetUnfolderBase]: 1208/2117 cut-off events. [2025-03-14 01:03:35,700 INFO L125 PetriNetUnfolderBase]: For 19588/19664 co-relation queries the response was YES. [2025-03-14 01:03:35,714 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13907 conditions, 2117 events. 1208/2117 cut-off events. For 19588/19664 co-relation queries the response was YES. Maximal size of possible extension queue 157. Compared 11945 event pairs, 305 based on Foata normal form. 16/2133 useless extension candidates. Maximal degree in co-relation 13839. Up to 1176 conditions per place. [2025-03-14 01:03:35,722 INFO L140 encePairwiseOnDemand]: 24/34 looper letters, 178 selfloop transitions, 78 changer transitions 0/259 dead transitions. [2025-03-14 01:03:35,722 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 259 transitions, 4299 flow [2025-03-14 01:03:35,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-03-14 01:03:35,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2025-03-14 01:03:35,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 153 transitions. [2025-03-14 01:03:35,723 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4090909090909091 [2025-03-14 01:03:35,723 INFO L175 Difference]: Start difference. First operand has 201 places, 189 transitions, 3285 flow. Second operand 11 states and 153 transitions. [2025-03-14 01:03:35,723 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 259 transitions, 4299 flow [2025-03-14 01:03:35,804 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 259 transitions, 4106 flow, removed 8 selfloop flow, removed 13 redundant places. [2025-03-14 01:03:35,808 INFO L231 Difference]: Finished difference. Result has 202 places, 196 transitions, 3413 flow [2025-03-14 01:03:35,808 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=3100, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=189, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3413, PETRI_PLACES=202, PETRI_TRANSITIONS=196} [2025-03-14 01:03:35,812 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 172 predicate places. [2025-03-14 01:03:35,812 INFO L471 AbstractCegarLoop]: Abstraction has has 202 places, 196 transitions, 3413 flow [2025-03-14 01:03:35,812 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:03:35,812 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:03:35,812 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:03:35,821 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2025-03-14 01:03:36,017 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable63 [2025-03-14 01:03:36,017 INFO L396 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-14 01:03:36,018 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:03:36,018 INFO L85 PathProgramCache]: Analyzing trace with hash 1120271009, now seen corresponding path program 13 times [2025-03-14 01:03:36,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:03:36,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374899405] [2025-03-14 01:03:36,018 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-14 01:03:36,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:03:36,022 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 26 statements into 1 equivalence classes. [2025-03-14 01:03:36,026 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 26 of 26 statements. [2025-03-14 01:03:36,026 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-14 01:03:36,026 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:03:36,146 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-14 01:03:36,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:03:36,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [374899405] [2025-03-14 01:03:36,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [374899405] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-14 01:03:36,146 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-14 01:03:36,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-03-14 01:03:36,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648872001] [2025-03-14 01:03:36,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 01:03:36,146 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-03-14 01:03:36,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:03:36,146 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-03-14 01:03:36,147 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2025-03-14 01:03:36,155 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 34 [2025-03-14 01:03:36,155 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 196 transitions, 3413 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:03:36,155 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:03:36,155 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 34 [2025-03-14 01:03:36,155 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:03:36,480 INFO L124 PetriNetUnfolderBase]: 1202/2109 cut-off events. [2025-03-14 01:03:36,480 INFO L125 PetriNetUnfolderBase]: For 18626/18706 co-relation queries the response was YES. [2025-03-14 01:03:36,491 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13840 conditions, 2109 events. 1202/2109 cut-off events. For 18626/18706 co-relation queries the response was YES. Maximal size of possible extension queue 157. Compared 11893 event pairs, 329 based on Foata normal form. 6/2115 useless extension candidates. Maximal degree in co-relation 13778. Up to 1169 conditions per place. [2025-03-14 01:03:36,500 INFO L140 encePairwiseOnDemand]: 24/34 looper letters, 151 selfloop transitions, 68 changer transitions 16/238 dead transitions. [2025-03-14 01:03:36,500 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 238 transitions, 4086 flow [2025-03-14 01:03:36,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-03-14 01:03:36,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2025-03-14 01:03:36,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 141 transitions. [2025-03-14 01:03:36,501 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.34558823529411764 [2025-03-14 01:03:36,501 INFO L175 Difference]: Start difference. First operand has 202 places, 196 transitions, 3413 flow. Second operand 12 states and 141 transitions. [2025-03-14 01:03:36,501 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 238 transitions, 4086 flow [2025-03-14 01:03:36,564 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 238 transitions, 4033 flow, removed 2 selfloop flow, removed 2 redundant places. [2025-03-14 01:03:36,567 INFO L231 Difference]: Finished difference. Result has 211 places, 186 transitions, 3294 flow [2025-03-14 01:03:36,567 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=3309, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3294, PETRI_PLACES=211, PETRI_TRANSITIONS=186} [2025-03-14 01:03:36,567 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 181 predicate places. [2025-03-14 01:03:36,567 INFO L471 AbstractCegarLoop]: Abstraction has has 211 places, 186 transitions, 3294 flow [2025-03-14 01:03:36,567 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:03:36,567 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:03:36,568 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:03:36,568 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2025-03-14 01:03:36,568 INFO L396 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-14 01:03:36,568 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:03:36,568 INFO L85 PathProgramCache]: Analyzing trace with hash 1721257635, now seen corresponding path program 14 times [2025-03-14 01:03:36,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:03:36,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580532986] [2025-03-14 01:03:36,568 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-14 01:03:36,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:03:36,576 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 26 statements into 2 equivalence classes. [2025-03-14 01:03:36,581 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 26 of 26 statements. [2025-03-14 01:03:36,581 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-14 01:03:36,581 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:03:36,738 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-14 01:03:36,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:03:36,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580532986] [2025-03-14 01:03:36,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1580532986] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-14 01:03:36,738 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-14 01:03:36,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-03-14 01:03:36,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014452485] [2025-03-14 01:03:36,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 01:03:36,739 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-03-14 01:03:36,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:03:36,739 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-03-14 01:03:36,739 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2025-03-14 01:03:36,755 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 34 [2025-03-14 01:03:36,756 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 186 transitions, 3294 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:03:36,756 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:03:36,756 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 34 [2025-03-14 01:03:36,756 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:03:37,162 INFO L124 PetriNetUnfolderBase]: 1171/2052 cut-off events. [2025-03-14 01:03:37,162 INFO L125 PetriNetUnfolderBase]: For 19903/19987 co-relation queries the response was YES. [2025-03-14 01:03:37,175 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13571 conditions, 2052 events. 1171/2052 cut-off events. For 19903/19987 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 11491 event pairs, 361 based on Foata normal form. 6/2058 useless extension candidates. Maximal degree in co-relation 13509. Up to 1367 conditions per place. [2025-03-14 01:03:37,183 INFO L140 encePairwiseOnDemand]: 23/34 looper letters, 131 selfloop transitions, 70 changer transitions 8/212 dead transitions. [2025-03-14 01:03:37,183 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 212 transitions, 3826 flow [2025-03-14 01:03:37,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-03-14 01:03:37,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2025-03-14 01:03:37,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 124 transitions. [2025-03-14 01:03:37,184 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3315508021390374 [2025-03-14 01:03:37,184 INFO L175 Difference]: Start difference. First operand has 211 places, 186 transitions, 3294 flow. Second operand 11 states and 124 transitions. [2025-03-14 01:03:37,184 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 212 transitions, 3826 flow [2025-03-14 01:03:37,236 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 212 transitions, 3646 flow, removed 0 selfloop flow, removed 8 redundant places. [2025-03-14 01:03:37,238 INFO L231 Difference]: Finished difference. Result has 205 places, 179 transitions, 3107 flow [2025-03-14 01:03:37,239 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=3062, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3107, PETRI_PLACES=205, PETRI_TRANSITIONS=179} [2025-03-14 01:03:37,239 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 175 predicate places. [2025-03-14 01:03:37,239 INFO L471 AbstractCegarLoop]: Abstraction has has 205 places, 179 transitions, 3107 flow [2025-03-14 01:03:37,239 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:03:37,239 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:03:37,239 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:03:37,239 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2025-03-14 01:03:37,239 INFO L396 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-14 01:03:37,240 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:03:37,240 INFO L85 PathProgramCache]: Analyzing trace with hash -70689649, now seen corresponding path program 15 times [2025-03-14 01:03:37,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:03:37,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1532935847] [2025-03-14 01:03:37,240 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-14 01:03:37,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:03:37,244 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 26 statements into 2 equivalence classes. [2025-03-14 01:03:37,247 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 24 of 26 statements. [2025-03-14 01:03:37,247 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-03-14 01:03:37,247 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:03:37,392 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-14 01:03:37,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:03:37,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1532935847] [2025-03-14 01:03:37,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1532935847] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-14 01:03:37,392 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-14 01:03:37,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-03-14 01:03:37,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34209344] [2025-03-14 01:03:37,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 01:03:37,393 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-03-14 01:03:37,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:03:37,393 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-03-14 01:03:37,393 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2025-03-14 01:03:37,407 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 34 [2025-03-14 01:03:37,407 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 179 transitions, 3107 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:03:37,407 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:03:37,407 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 34 [2025-03-14 01:03:37,407 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:03:37,700 INFO L124 PetriNetUnfolderBase]: 1102/1915 cut-off events. [2025-03-14 01:03:37,700 INFO L125 PetriNetUnfolderBase]: For 17597/17677 co-relation queries the response was YES. [2025-03-14 01:03:37,708 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12799 conditions, 1915 events. 1102/1915 cut-off events. For 17597/17677 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 10508 event pairs, 341 based on Foata normal form. 6/1921 useless extension candidates. Maximal degree in co-relation 12737. Up to 1281 conditions per place. [2025-03-14 01:03:37,713 INFO L140 encePairwiseOnDemand]: 22/34 looper letters, 127 selfloop transitions, 67 changer transitions 5/202 dead transitions. [2025-03-14 01:03:37,713 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 202 transitions, 3586 flow [2025-03-14 01:03:37,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-14 01:03:37,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-03-14 01:03:37,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 113 transitions. [2025-03-14 01:03:37,714 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3323529411764706 [2025-03-14 01:03:37,714 INFO L175 Difference]: Start difference. First operand has 205 places, 179 transitions, 3107 flow. Second operand 10 states and 113 transitions. [2025-03-14 01:03:37,714 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 202 transitions, 3586 flow [2025-03-14 01:03:37,760 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 202 transitions, 3428 flow, removed 4 selfloop flow, removed 11 redundant places. [2025-03-14 01:03:37,762 INFO L231 Difference]: Finished difference. Result has 199 places, 174 transitions, 2954 flow [2025-03-14 01:03:37,762 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=2868, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2954, PETRI_PLACES=199, PETRI_TRANSITIONS=174} [2025-03-14 01:03:37,763 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 169 predicate places. [2025-03-14 01:03:37,763 INFO L471 AbstractCegarLoop]: Abstraction has has 199 places, 174 transitions, 2954 flow [2025-03-14 01:03:37,763 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:03:37,763 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:03:37,763 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:03:37,763 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2025-03-14 01:03:37,763 INFO L396 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-14 01:03:37,764 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:03:37,764 INFO L85 PathProgramCache]: Analyzing trace with hash -634222, now seen corresponding path program 17 times [2025-03-14 01:03:37,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:03:37,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383195084] [2025-03-14 01:03:37,764 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-14 01:03:37,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:03:37,768 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 26 statements into 2 equivalence classes. [2025-03-14 01:03:37,772 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 26 of 26 statements. [2025-03-14 01:03:37,772 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-14 01:03:37,772 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:03:37,943 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-14 01:03:37,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:03:37,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383195084] [2025-03-14 01:03:37,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1383195084] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-14 01:03:37,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1166635650] [2025-03-14 01:03:37,944 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-14 01:03:37,944 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-14 01:03:37,944 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-14 01:03:37,948 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-14 01:03:37,951 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2025-03-14 01:03:38,012 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 26 statements into 2 equivalence classes. [2025-03-14 01:03:38,032 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 26 of 26 statements. [2025-03-14 01:03:38,032 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-14 01:03:38,032 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:03:38,034 INFO L256 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 15 conjuncts are in the unsatisfiable core [2025-03-14 01:03:38,035 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-14 01:03:38,072 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-14 01:03:38,072 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 25 [2025-03-14 01:03:38,085 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-14 01:03:38,086 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-14 01:03:38,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1166635650] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-14 01:03:38,086 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-14 01:03:38,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [10] total 15 [2025-03-14 01:03:38,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640566902] [2025-03-14 01:03:38,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 01:03:38,086 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-14 01:03:38,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:03:38,086 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-14 01:03:38,086 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2025-03-14 01:03:38,091 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 34 [2025-03-14 01:03:38,091 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 174 transitions, 2954 flow. Second operand has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:03:38,091 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:03:38,091 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 34 [2025-03-14 01:03:38,091 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:03:38,396 INFO L124 PetriNetUnfolderBase]: 1075/1872 cut-off events. [2025-03-14 01:03:38,396 INFO L125 PetriNetUnfolderBase]: For 16686/16762 co-relation queries the response was YES. [2025-03-14 01:03:38,404 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12390 conditions, 1872 events. 1075/1872 cut-off events. For 16686/16762 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 10219 event pairs, 326 based on Foata normal form. 7/1879 useless extension candidates. Maximal degree in co-relation 12330. Up to 1254 conditions per place. [2025-03-14 01:03:38,409 INFO L140 encePairwiseOnDemand]: 24/34 looper letters, 128 selfloop transitions, 61 changer transitions 6/198 dead transitions. [2025-03-14 01:03:38,410 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 198 transitions, 3441 flow [2025-03-14 01:03:38,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-14 01:03:38,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-03-14 01:03:38,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 102 transitions. [2025-03-14 01:03:38,413 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.375 [2025-03-14 01:03:38,413 INFO L175 Difference]: Start difference. First operand has 199 places, 174 transitions, 2954 flow. Second operand 8 states and 102 transitions. [2025-03-14 01:03:38,413 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 198 transitions, 3441 flow [2025-03-14 01:03:38,455 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 198 transitions, 3281 flow, removed 2 selfloop flow, removed 10 redundant places. [2025-03-14 01:03:38,457 INFO L231 Difference]: Finished difference. Result has 191 places, 169 transitions, 2793 flow [2025-03-14 01:03:38,457 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=2726, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2793, PETRI_PLACES=191, PETRI_TRANSITIONS=169} [2025-03-14 01:03:38,458 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 161 predicate places. [2025-03-14 01:03:38,458 INFO L471 AbstractCegarLoop]: Abstraction has has 191 places, 169 transitions, 2793 flow [2025-03-14 01:03:38,458 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:03:38,458 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:03:38,458 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:03:38,464 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2025-03-14 01:03:38,658 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable67 [2025-03-14 01:03:38,658 INFO L396 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-14 01:03:38,659 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:03:38,659 INFO L85 PathProgramCache]: Analyzing trace with hash 807091361, now seen corresponding path program 16 times [2025-03-14 01:03:38,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:03:38,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466540757] [2025-03-14 01:03:38,659 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-14 01:03:38,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:03:38,663 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 26 statements into 2 equivalence classes. [2025-03-14 01:03:38,664 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 20 of 26 statements. [2025-03-14 01:03:38,664 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-03-14 01:03:38,664 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:03:38,712 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-14 01:03:38,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:03:38,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466540757] [2025-03-14 01:03:38,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [466540757] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-14 01:03:38,712 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-14 01:03:38,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-14 01:03:38,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162308584] [2025-03-14 01:03:38,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 01:03:38,713 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-14 01:03:38,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:03:38,713 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-14 01:03:38,713 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2025-03-14 01:03:38,719 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 34 [2025-03-14 01:03:38,720 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 169 transitions, 2793 flow. Second operand has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:03:38,720 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:03:38,720 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 34 [2025-03-14 01:03:38,720 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:03:38,981 INFO L124 PetriNetUnfolderBase]: 1095/1901 cut-off events. [2025-03-14 01:03:38,981 INFO L125 PetriNetUnfolderBase]: For 18475/18555 co-relation queries the response was YES. [2025-03-14 01:03:38,989 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12556 conditions, 1901 events. 1095/1901 cut-off events. For 18475/18555 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 10301 event pairs, 376 based on Foata normal form. 16/1917 useless extension candidates. Maximal degree in co-relation 12498. Up to 1270 conditions per place. [2025-03-14 01:03:38,996 INFO L140 encePairwiseOnDemand]: 24/34 looper letters, 129 selfloop transitions, 63 changer transitions 0/195 dead transitions. [2025-03-14 01:03:38,996 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 195 transitions, 3387 flow [2025-03-14 01:03:38,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-14 01:03:38,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-03-14 01:03:38,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 102 transitions. [2025-03-14 01:03:38,997 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2025-03-14 01:03:38,997 INFO L175 Difference]: Start difference. First operand has 191 places, 169 transitions, 2793 flow. Second operand 7 states and 102 transitions. [2025-03-14 01:03:38,997 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 195 transitions, 3387 flow [2025-03-14 01:03:39,036 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 195 transitions, 3251 flow, removed 2 selfloop flow, removed 7 redundant places. [2025-03-14 01:03:39,039 INFO L231 Difference]: Finished difference. Result has 188 places, 173 transitions, 2887 flow [2025-03-14 01:03:39,039 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=2663, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2887, PETRI_PLACES=188, PETRI_TRANSITIONS=173} [2025-03-14 01:03:39,039 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 158 predicate places. [2025-03-14 01:03:39,039 INFO L471 AbstractCegarLoop]: Abstraction has has 188 places, 173 transitions, 2887 flow [2025-03-14 01:03:39,039 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:03:39,039 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:03:39,039 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:03:39,039 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2025-03-14 01:03:39,039 INFO L396 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-14 01:03:39,040 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:03:39,040 INFO L85 PathProgramCache]: Analyzing trace with hash 1299687123, now seen corresponding path program 17 times [2025-03-14 01:03:39,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:03:39,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [533362871] [2025-03-14 01:03:39,040 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-14 01:03:39,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:03:39,044 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 26 statements into 2 equivalence classes. [2025-03-14 01:03:39,048 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 26 of 26 statements. [2025-03-14 01:03:39,048 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-14 01:03:39,048 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:03:39,201 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-14 01:03:39,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:03:39,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [533362871] [2025-03-14 01:03:39,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [533362871] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-14 01:03:39,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1953965149] [2025-03-14 01:03:39,201 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-14 01:03:39,201 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-14 01:03:39,201 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-14 01:03:39,203 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-14 01:03:39,206 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2025-03-14 01:03:39,269 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 26 statements into 2 equivalence classes. [2025-03-14 01:03:39,287 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 26 of 26 statements. [2025-03-14 01:03:39,287 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-14 01:03:39,287 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:03:39,289 INFO L256 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 19 conjuncts are in the unsatisfiable core [2025-03-14 01:03:39,289 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-14 01:03:39,357 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-14 01:03:39,357 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 25 [2025-03-14 01:03:39,371 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-14 01:03:39,371 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-14 01:03:39,419 INFO L349 Elim1Store]: treesize reduction 28, result has 63.6 percent of original size [2025-03-14 01:03:39,419 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 40 treesize of output 56 [2025-03-14 01:03:39,434 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-14 01:03:39,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1953965149] provided 1 perfect and 1 imperfect interpolant sequences [2025-03-14 01:03:39,434 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-03-14 01:03:39,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8, 8] total 18 [2025-03-14 01:03:39,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992765038] [2025-03-14 01:03:39,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 01:03:39,435 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-14 01:03:39,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:03:39,435 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-14 01:03:39,435 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=245, Unknown=0, NotChecked=0, Total=306 [2025-03-14 01:03:39,451 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 34 [2025-03-14 01:03:39,452 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 173 transitions, 2887 flow. Second operand has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:03:39,452 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:03:39,452 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 34 [2025-03-14 01:03:39,452 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:03:39,752 INFO L124 PetriNetUnfolderBase]: 1139/2019 cut-off events. [2025-03-14 01:03:39,752 INFO L125 PetriNetUnfolderBase]: For 17342/17410 co-relation queries the response was YES. [2025-03-14 01:03:39,764 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12882 conditions, 2019 events. 1139/2019 cut-off events. For 17342/17410 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 11281 event pairs, 360 based on Foata normal form. 16/2035 useless extension candidates. Maximal degree in co-relation 12823. Up to 1244 conditions per place. [2025-03-14 01:03:39,770 INFO L140 encePairwiseOnDemand]: 24/34 looper letters, 145 selfloop transitions, 67 changer transitions 1/216 dead transitions. [2025-03-14 01:03:39,771 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 216 transitions, 3568 flow [2025-03-14 01:03:39,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-14 01:03:39,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-03-14 01:03:39,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 137 transitions. [2025-03-14 01:03:39,772 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.40294117647058825 [2025-03-14 01:03:39,772 INFO L175 Difference]: Start difference. First operand has 188 places, 173 transitions, 2887 flow. Second operand 10 states and 137 transitions. [2025-03-14 01:03:39,772 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 216 transitions, 3568 flow [2025-03-14 01:03:39,807 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 216 transitions, 3475 flow, removed 9 selfloop flow, removed 5 redundant places. [2025-03-14 01:03:39,810 INFO L231 Difference]: Finished difference. Result has 192 places, 174 transitions, 2917 flow [2025-03-14 01:03:39,811 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=2728, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2917, PETRI_PLACES=192, PETRI_TRANSITIONS=174} [2025-03-14 01:03:39,811 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 162 predicate places. [2025-03-14 01:03:39,811 INFO L471 AbstractCegarLoop]: Abstraction has has 192 places, 174 transitions, 2917 flow [2025-03-14 01:03:39,811 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:03:39,811 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:03:39,811 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:03:39,818 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2025-03-14 01:03:40,011 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable69 [2025-03-14 01:03:40,012 INFO L396 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-14 01:03:40,012 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:03:40,012 INFO L85 PathProgramCache]: Analyzing trace with hash 1439528459, now seen corresponding path program 18 times [2025-03-14 01:03:40,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:03:40,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342634947] [2025-03-14 01:03:40,012 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-14 01:03:40,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:03:40,017 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 26 statements into 2 equivalence classes. [2025-03-14 01:03:40,020 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) and asserted 24 of 26 statements. [2025-03-14 01:03:40,020 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2025-03-14 01:03:40,020 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:03:40,167 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-14 01:03:40,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:03:40,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1342634947] [2025-03-14 01:03:40,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1342634947] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-14 01:03:40,168 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-14 01:03:40,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-03-14 01:03:40,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799095939] [2025-03-14 01:03:40,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 01:03:40,168 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-03-14 01:03:40,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:03:40,168 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-03-14 01:03:40,168 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2025-03-14 01:03:40,183 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 34 [2025-03-14 01:03:40,184 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 174 transitions, 2917 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:03:40,184 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:03:40,184 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 34 [2025-03-14 01:03:40,184 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:03:40,534 INFO L124 PetriNetUnfolderBase]: 1079/1893 cut-off events. [2025-03-14 01:03:40,534 INFO L125 PetriNetUnfolderBase]: For 16070/16144 co-relation queries the response was YES. [2025-03-14 01:03:40,542 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12181 conditions, 1893 events. 1079/1893 cut-off events. For 16070/16144 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 10387 event pairs, 370 based on Foata normal form. 6/1899 useless extension candidates. Maximal degree in co-relation 12125. Up to 1263 conditions per place. [2025-03-14 01:03:40,547 INFO L140 encePairwiseOnDemand]: 22/34 looper letters, 116 selfloop transitions, 64 changer transitions 5/188 dead transitions. [2025-03-14 01:03:40,547 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 188 transitions, 3294 flow [2025-03-14 01:03:40,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-14 01:03:40,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-03-14 01:03:40,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 113 transitions. [2025-03-14 01:03:40,548 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3323529411764706 [2025-03-14 01:03:40,548 INFO L175 Difference]: Start difference. First operand has 192 places, 174 transitions, 2917 flow. Second operand 10 states and 113 transitions. [2025-03-14 01:03:40,548 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 188 transitions, 3294 flow [2025-03-14 01:03:40,578 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 188 transitions, 3109 flow, removed 0 selfloop flow, removed 14 redundant places. [2025-03-14 01:03:40,580 INFO L231 Difference]: Finished difference. Result has 187 places, 169 transitions, 2734 flow [2025-03-14 01:03:40,580 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=2658, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2734, PETRI_PLACES=187, PETRI_TRANSITIONS=169} [2025-03-14 01:03:40,580 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 157 predicate places. [2025-03-14 01:03:40,581 INFO L471 AbstractCegarLoop]: Abstraction has has 187 places, 169 transitions, 2734 flow [2025-03-14 01:03:40,581 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:03:40,581 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:03:40,581 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:03:40,581 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2025-03-14 01:03:40,581 INFO L396 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-14 01:03:40,581 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:03:40,581 INFO L85 PathProgramCache]: Analyzing trace with hash -1819789529, now seen corresponding path program 19 times [2025-03-14 01:03:40,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:03:40,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345094606] [2025-03-14 01:03:40,581 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-14 01:03:40,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:03:40,585 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 26 statements into 1 equivalence classes. [2025-03-14 01:03:40,589 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 26 of 26 statements. [2025-03-14 01:03:40,589 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-14 01:03:40,589 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:03:40,723 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-14 01:03:40,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:03:40,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345094606] [2025-03-14 01:03:40,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [345094606] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-14 01:03:40,723 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-14 01:03:40,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-03-14 01:03:40,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936202662] [2025-03-14 01:03:40,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 01:03:40,724 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-03-14 01:03:40,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:03:40,724 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-03-14 01:03:40,724 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2025-03-14 01:03:40,740 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 34 [2025-03-14 01:03:40,740 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 169 transitions, 2734 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:03:40,740 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:03:40,740 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 34 [2025-03-14 01:03:40,741 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:03:41,007 INFO L124 PetriNetUnfolderBase]: 1070/1884 cut-off events. [2025-03-14 01:03:41,008 INFO L125 PetriNetUnfolderBase]: For 14500/14566 co-relation queries the response was YES. [2025-03-14 01:03:41,016 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11889 conditions, 1884 events. 1070/1884 cut-off events. For 14500/14566 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 10343 event pairs, 366 based on Foata normal form. 6/1890 useless extension candidates. Maximal degree in co-relation 11841. Up to 1253 conditions per place. [2025-03-14 01:03:41,022 INFO L140 encePairwiseOnDemand]: 22/34 looper letters, 116 selfloop transitions, 60 changer transitions 5/184 dead transitions. [2025-03-14 01:03:41,022 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 184 transitions, 3128 flow [2025-03-14 01:03:41,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-14 01:03:41,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-03-14 01:03:41,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 114 transitions. [2025-03-14 01:03:41,023 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3352941176470588 [2025-03-14 01:03:41,023 INFO L175 Difference]: Start difference. First operand has 187 places, 169 transitions, 2734 flow. Second operand 10 states and 114 transitions. [2025-03-14 01:03:41,023 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 184 transitions, 3128 flow [2025-03-14 01:03:41,054 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 184 transitions, 2976 flow, removed 0 selfloop flow, removed 10 redundant places. [2025-03-14 01:03:41,057 INFO L231 Difference]: Finished difference. Result has 184 places, 165 transitions, 2609 flow [2025-03-14 01:03:41,057 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=2533, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2609, PETRI_PLACES=184, PETRI_TRANSITIONS=165} [2025-03-14 01:03:41,057 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 154 predicate places. [2025-03-14 01:03:41,057 INFO L471 AbstractCegarLoop]: Abstraction has has 184 places, 165 transitions, 2609 flow [2025-03-14 01:03:41,058 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:03:41,058 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:03:41,058 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:03:41,058 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2025-03-14 01:03:41,058 INFO L396 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-14 01:03:41,058 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:03:41,058 INFO L85 PathProgramCache]: Analyzing trace with hash 1467564569, now seen corresponding path program 20 times [2025-03-14 01:03:41,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:03:41,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [214441967] [2025-03-14 01:03:41,058 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-14 01:03:41,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:03:41,065 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 26 statements into 2 equivalence classes. [2025-03-14 01:03:41,069 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 24 of 26 statements. [2025-03-14 01:03:41,069 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-14 01:03:41,069 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:03:41,214 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-14 01:03:41,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:03:41,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [214441967] [2025-03-14 01:03:41,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [214441967] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-14 01:03:41,214 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-14 01:03:41,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-03-14 01:03:41,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400662668] [2025-03-14 01:03:41,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 01:03:41,214 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-03-14 01:03:41,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:03:41,215 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-03-14 01:03:41,215 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2025-03-14 01:03:41,228 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 34 [2025-03-14 01:03:41,228 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 165 transitions, 2609 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:03:41,228 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:03:41,228 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 34 [2025-03-14 01:03:41,228 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:03:41,549 INFO L124 PetriNetUnfolderBase]: 1008/1754 cut-off events. [2025-03-14 01:03:41,549 INFO L125 PetriNetUnfolderBase]: For 13437/13507 co-relation queries the response was YES. [2025-03-14 01:03:41,559 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11173 conditions, 1754 events. 1008/1754 cut-off events. For 13437/13507 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 9389 event pairs, 340 based on Foata normal form. 6/1760 useless extension candidates. Maximal degree in co-relation 11125. Up to 1151 conditions per place. [2025-03-14 01:03:41,565 INFO L140 encePairwiseOnDemand]: 23/34 looper letters, 110 selfloop transitions, 53 changer transitions 11/177 dead transitions. [2025-03-14 01:03:41,566 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 177 transitions, 2941 flow [2025-03-14 01:03:41,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-03-14 01:03:41,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2025-03-14 01:03:41,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 118 transitions. [2025-03-14 01:03:41,566 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3155080213903743 [2025-03-14 01:03:41,566 INFO L175 Difference]: Start difference. First operand has 184 places, 165 transitions, 2609 flow. Second operand 11 states and 118 transitions. [2025-03-14 01:03:41,566 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 177 transitions, 2941 flow [2025-03-14 01:03:41,594 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 177 transitions, 2822 flow, removed 0 selfloop flow, removed 8 redundant places. [2025-03-14 01:03:41,596 INFO L231 Difference]: Finished difference. Result has 181 places, 157 transitions, 2449 flow [2025-03-14 01:03:41,596 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=2420, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2449, PETRI_PLACES=181, PETRI_TRANSITIONS=157} [2025-03-14 01:03:41,597 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 151 predicate places. [2025-03-14 01:03:41,597 INFO L471 AbstractCegarLoop]: Abstraction has has 181 places, 157 transitions, 2449 flow [2025-03-14 01:03:41,597 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:03:41,597 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:03:41,597 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:03:41,597 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2025-03-14 01:03:41,597 INFO L396 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-14 01:03:41,597 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:03:41,597 INFO L85 PathProgramCache]: Analyzing trace with hash 1509240198, now seen corresponding path program 18 times [2025-03-14 01:03:41,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:03:41,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [9021838] [2025-03-14 01:03:41,598 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-14 01:03:41,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:03:41,602 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 26 statements into 2 equivalence classes. [2025-03-14 01:03:41,605 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) and asserted 24 of 26 statements. [2025-03-14 01:03:41,605 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2025-03-14 01:03:41,605 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:03:41,736 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-14 01:03:41,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:03:41,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [9021838] [2025-03-14 01:03:41,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [9021838] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-14 01:03:41,737 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-14 01:03:41,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-03-14 01:03:41,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856803374] [2025-03-14 01:03:41,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 01:03:41,737 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-03-14 01:03:41,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:03:41,737 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-03-14 01:03:41,737 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2025-03-14 01:03:41,749 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 34 [2025-03-14 01:03:41,749 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 157 transitions, 2449 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:03:41,749 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:03:41,749 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 34 [2025-03-14 01:03:41,749 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:03:41,991 INFO L124 PetriNetUnfolderBase]: 944/1638 cut-off events. [2025-03-14 01:03:41,991 INFO L125 PetriNetUnfolderBase]: For 12775/12835 co-relation queries the response was YES. [2025-03-14 01:03:41,997 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10523 conditions, 1638 events. 944/1638 cut-off events. For 12775/12835 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 8620 event pairs, 305 based on Foata normal form. 7/1645 useless extension candidates. Maximal degree in co-relation 10475. Up to 1060 conditions per place. [2025-03-14 01:03:42,001 INFO L140 encePairwiseOnDemand]: 24/34 looper letters, 109 selfloop transitions, 51 changer transitions 6/169 dead transitions. [2025-03-14 01:03:42,001 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 169 transitions, 2794 flow [2025-03-14 01:03:42,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-14 01:03:42,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-03-14 01:03:42,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 111 transitions. [2025-03-14 01:03:42,002 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3264705882352941 [2025-03-14 01:03:42,002 INFO L175 Difference]: Start difference. First operand has 181 places, 157 transitions, 2449 flow. Second operand 10 states and 111 transitions. [2025-03-14 01:03:42,002 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 169 transitions, 2794 flow [2025-03-14 01:03:42,028 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 169 transitions, 2631 flow, removed 2 selfloop flow, removed 8 redundant places. [2025-03-14 01:03:42,030 INFO L231 Difference]: Finished difference. Result has 172 places, 153 transitions, 2306 flow [2025-03-14 01:03:42,030 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=2246, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2306, PETRI_PLACES=172, PETRI_TRANSITIONS=153} [2025-03-14 01:03:42,031 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 142 predicate places. [2025-03-14 01:03:42,031 INFO L471 AbstractCegarLoop]: Abstraction has has 172 places, 153 transitions, 2306 flow [2025-03-14 01:03:42,031 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:03:42,031 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:03:42,031 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:03:42,031 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2025-03-14 01:03:42,031 INFO L396 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-14 01:03:42,033 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:03:42,033 INFO L85 PathProgramCache]: Analyzing trace with hash 1016644436, now seen corresponding path program 19 times [2025-03-14 01:03:42,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:03:42,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930567159] [2025-03-14 01:03:42,033 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-14 01:03:42,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:03:42,038 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 26 statements into 1 equivalence classes. [2025-03-14 01:03:42,042 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 26 of 26 statements. [2025-03-14 01:03:42,042 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-14 01:03:42,042 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:03:42,195 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-14 01:03:42,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:03:42,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [930567159] [2025-03-14 01:03:42,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [930567159] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-14 01:03:42,195 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-14 01:03:42,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-03-14 01:03:42,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16396734] [2025-03-14 01:03:42,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 01:03:42,195 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-03-14 01:03:42,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:03:42,196 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-03-14 01:03:42,196 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2025-03-14 01:03:42,206 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 34 [2025-03-14 01:03:42,207 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 153 transitions, 2306 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:03:42,207 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:03:42,207 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 34 [2025-03-14 01:03:42,207 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:03:42,437 INFO L124 PetriNetUnfolderBase]: 942/1636 cut-off events. [2025-03-14 01:03:42,437 INFO L125 PetriNetUnfolderBase]: For 11642/11702 co-relation queries the response was YES. [2025-03-14 01:03:42,443 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10345 conditions, 1636 events. 942/1636 cut-off events. For 11642/11702 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 8606 event pairs, 305 based on Foata normal form. 7/1643 useless extension candidates. Maximal degree in co-relation 10297. Up to 1060 conditions per place. [2025-03-14 01:03:42,449 INFO L140 encePairwiseOnDemand]: 24/34 looper letters, 107 selfloop transitions, 52 changer transitions 6/168 dead transitions. [2025-03-14 01:03:42,449 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 168 transitions, 2711 flow [2025-03-14 01:03:42,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-14 01:03:42,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-03-14 01:03:42,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 108 transitions. [2025-03-14 01:03:42,449 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3176470588235294 [2025-03-14 01:03:42,449 INFO L175 Difference]: Start difference. First operand has 172 places, 153 transitions, 2306 flow. Second operand 10 states and 108 transitions. [2025-03-14 01:03:42,449 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 168 transitions, 2711 flow [2025-03-14 01:03:42,474 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 168 transitions, 2607 flow, removed 0 selfloop flow, removed 7 redundant places. [2025-03-14 01:03:42,476 INFO L231 Difference]: Finished difference. Result has 172 places, 152 transitions, 2293 flow [2025-03-14 01:03:42,476 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=2204, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2293, PETRI_PLACES=172, PETRI_TRANSITIONS=152} [2025-03-14 01:03:42,476 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 142 predicate places. [2025-03-14 01:03:42,476 INFO L471 AbstractCegarLoop]: Abstraction has has 172 places, 152 transitions, 2293 flow [2025-03-14 01:03:42,476 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:03:42,476 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:03:42,477 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:03:42,477 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2025-03-14 01:03:42,477 INFO L396 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-14 01:03:42,477 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:03:42,477 INFO L85 PathProgramCache]: Analyzing trace with hash -23591362, now seen corresponding path program 20 times [2025-03-14 01:03:42,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:03:42,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963692700] [2025-03-14 01:03:42,477 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-14 01:03:42,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:03:42,483 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 26 statements into 2 equivalence classes. [2025-03-14 01:03:42,487 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 24 of 26 statements. [2025-03-14 01:03:42,487 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-14 01:03:42,487 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:03:42,618 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-14 01:03:42,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:03:42,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1963692700] [2025-03-14 01:03:42,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1963692700] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-14 01:03:42,618 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-14 01:03:42,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-03-14 01:03:42,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594460116] [2025-03-14 01:03:42,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 01:03:42,618 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-03-14 01:03:42,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:03:42,619 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-03-14 01:03:42,619 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2025-03-14 01:03:42,637 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 34 [2025-03-14 01:03:42,637 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 152 transitions, 2293 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:03:42,637 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:03:42,637 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 34 [2025-03-14 01:03:42,637 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:03:42,875 INFO L124 PetriNetUnfolderBase]: 885/1530 cut-off events. [2025-03-14 01:03:42,875 INFO L125 PetriNetUnfolderBase]: For 10827/10881 co-relation queries the response was YES. [2025-03-14 01:03:42,880 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9786 conditions, 1530 events. 885/1530 cut-off events. For 10827/10881 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 7920 event pairs, 278 based on Foata normal form. 7/1537 useless extension candidates. Maximal degree in co-relation 9738. Up to 969 conditions per place. [2025-03-14 01:03:42,885 INFO L140 encePairwiseOnDemand]: 24/34 looper letters, 104 selfloop transitions, 46 changer transitions 13/166 dead transitions. [2025-03-14 01:03:42,885 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 166 transitions, 2619 flow [2025-03-14 01:03:42,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-03-14 01:03:42,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2025-03-14 01:03:42,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 115 transitions. [2025-03-14 01:03:42,886 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3074866310160428 [2025-03-14 01:03:42,886 INFO L175 Difference]: Start difference. First operand has 172 places, 152 transitions, 2293 flow. Second operand 11 states and 115 transitions. [2025-03-14 01:03:42,886 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 166 transitions, 2619 flow [2025-03-14 01:03:42,909 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 166 transitions, 2524 flow, removed 1 selfloop flow, removed 7 redundant places. [2025-03-14 01:03:42,911 INFO L231 Difference]: Finished difference. Result has 173 places, 144 transitions, 2148 flow [2025-03-14 01:03:42,911 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=2138, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2148, PETRI_PLACES=173, PETRI_TRANSITIONS=144} [2025-03-14 01:03:42,911 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 143 predicate places. [2025-03-14 01:03:42,911 INFO L471 AbstractCegarLoop]: Abstraction has has 173 places, 144 transitions, 2148 flow [2025-03-14 01:03:42,911 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:03:42,912 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:03:42,912 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:03:42,912 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2025-03-14 01:03:42,912 INFO L396 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-14 01:03:42,912 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:03:42,912 INFO L85 PathProgramCache]: Analyzing trace with hash -782616633, now seen corresponding path program 1 times [2025-03-14 01:03:42,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:03:42,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839409157] [2025-03-14 01:03:42,912 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-14 01:03:42,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:03:42,916 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 27 statements into 1 equivalence classes. [2025-03-14 01:03:42,919 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 27 of 27 statements. [2025-03-14 01:03:42,919 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-14 01:03:42,919 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:03:43,102 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-14 01:03:43,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:03:43,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [839409157] [2025-03-14 01:03:43,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [839409157] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-14 01:03:43,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1524517458] [2025-03-14 01:03:43,103 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-14 01:03:43,103 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-14 01:03:43,103 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-14 01:03:43,105 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-14 01:03:43,106 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2025-03-14 01:03:43,172 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 27 statements into 1 equivalence classes. [2025-03-14 01:03:43,188 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 27 of 27 statements. [2025-03-14 01:03:43,188 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-14 01:03:43,188 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:03:43,189 INFO L256 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 29 conjuncts are in the unsatisfiable core [2025-03-14 01:03:43,190 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-14 01:03:43,429 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-14 01:03:43,429 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-14 01:03:43,768 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-14 01:03:43,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1524517458] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-14 01:03:43,769 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-14 01:03:43,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10, 10] total 28 [2025-03-14 01:03:43,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372256974] [2025-03-14 01:03:43,769 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-14 01:03:43,769 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2025-03-14 01:03:43,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:03:43,769 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2025-03-14 01:03:43,770 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=641, Unknown=0, NotChecked=0, Total=812 [2025-03-14 01:03:43,844 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 34 [2025-03-14 01:03:43,844 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 144 transitions, 2148 flow. Second operand has 29 states, 29 states have (on average 6.379310344827586) internal successors, (185), 29 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:03:43,844 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:03:43,844 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 34 [2025-03-14 01:03:43,844 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:03:44,694 INFO L124 PetriNetUnfolderBase]: 2919/4984 cut-off events. [2025-03-14 01:03:44,694 INFO L125 PetriNetUnfolderBase]: For 34924/35016 co-relation queries the response was YES. [2025-03-14 01:03:44,713 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31304 conditions, 4984 events. 2919/4984 cut-off events. For 34924/35016 co-relation queries the response was YES. Maximal size of possible extension queue 363. Compared 31814 event pairs, 493 based on Foata normal form. 9/4993 useless extension candidates. Maximal degree in co-relation 31256. Up to 1032 conditions per place. [2025-03-14 01:03:44,729 INFO L140 encePairwiseOnDemand]: 20/34 looper letters, 438 selfloop transitions, 94 changer transitions 3/537 dead transitions. [2025-03-14 01:03:44,730 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 537 transitions, 8440 flow [2025-03-14 01:03:44,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2025-03-14 01:03:44,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2025-03-14 01:03:44,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 266 transitions. [2025-03-14 01:03:44,732 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3911764705882353 [2025-03-14 01:03:44,732 INFO L175 Difference]: Start difference. First operand has 173 places, 144 transitions, 2148 flow. Second operand 20 states and 266 transitions. [2025-03-14 01:03:44,732 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 537 transitions, 8440 flow [2025-03-14 01:03:44,822 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 537 transitions, 8060 flow, removed 4 selfloop flow, removed 11 redundant places. [2025-03-14 01:03:44,827 INFO L231 Difference]: Finished difference. Result has 183 places, 229 transitions, 3793 flow [2025-03-14 01:03:44,827 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=2030, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=3793, PETRI_PLACES=183, PETRI_TRANSITIONS=229} [2025-03-14 01:03:44,828 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 153 predicate places. [2025-03-14 01:03:44,828 INFO L471 AbstractCegarLoop]: Abstraction has has 183 places, 229 transitions, 3793 flow [2025-03-14 01:03:44,828 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 6.379310344827586) internal successors, (185), 29 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:03:44,828 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:03:44,828 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:03:44,835 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2025-03-14 01:03:45,028 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-14 01:03:45,029 INFO L396 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-14 01:03:45,029 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:03:45,029 INFO L85 PathProgramCache]: Analyzing trace with hash 869027146, now seen corresponding path program 2 times [2025-03-14 01:03:45,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:03:45,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615132132] [2025-03-14 01:03:45,029 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-14 01:03:45,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:03:45,034 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 28 statements into 2 equivalence classes. [2025-03-14 01:03:45,036 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 21 of 28 statements. [2025-03-14 01:03:45,036 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-14 01:03:45,036 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:03:45,103 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-03-14 01:03:45,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:03:45,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615132132] [2025-03-14 01:03:45,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [615132132] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-14 01:03:45,103 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-14 01:03:45,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-14 01:03:45,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111579627] [2025-03-14 01:03:45,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 01:03:45,103 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-14 01:03:45,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:03:45,104 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-14 01:03:45,104 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2025-03-14 01:03:45,108 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 34 [2025-03-14 01:03:45,108 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 229 transitions, 3793 flow. Second operand has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:03:45,108 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:03:45,108 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 34 [2025-03-14 01:03:45,108 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:03:45,852 INFO L124 PetriNetUnfolderBase]: 4274/7260 cut-off events. [2025-03-14 01:03:45,852 INFO L125 PetriNetUnfolderBase]: For 59051/59331 co-relation queries the response was YES. [2025-03-14 01:03:45,883 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48976 conditions, 7260 events. 4274/7260 cut-off events. For 59051/59331 co-relation queries the response was YES. Maximal size of possible extension queue 580. Compared 49953 event pairs, 168 based on Foata normal form. 18/7278 useless extension candidates. Maximal degree in co-relation 48919. Up to 1670 conditions per place. [2025-03-14 01:03:45,909 INFO L140 encePairwiseOnDemand]: 26/34 looper letters, 343 selfloop transitions, 99 changer transitions 6/451 dead transitions. [2025-03-14 01:03:45,909 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 451 transitions, 8048 flow [2025-03-14 01:03:45,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-14 01:03:45,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-03-14 01:03:45,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 149 transitions. [2025-03-14 01:03:45,910 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.43823529411764706 [2025-03-14 01:03:45,910 INFO L175 Difference]: Start difference. First operand has 183 places, 229 transitions, 3793 flow. Second operand 10 states and 149 transitions. [2025-03-14 01:03:45,910 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 451 transitions, 8048 flow [2025-03-14 01:03:46,167 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 451 transitions, 7971 flow, removed 24 selfloop flow, removed 2 redundant places. [2025-03-14 01:03:46,172 INFO L231 Difference]: Finished difference. Result has 193 places, 275 transitions, 4756 flow [2025-03-14 01:03:46,172 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=3734, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=229, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4756, PETRI_PLACES=193, PETRI_TRANSITIONS=275} [2025-03-14 01:03:46,172 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 163 predicate places. [2025-03-14 01:03:46,172 INFO L471 AbstractCegarLoop]: Abstraction has has 193 places, 275 transitions, 4756 flow [2025-03-14 01:03:46,172 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:03:46,172 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:03:46,173 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:03:46,173 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2025-03-14 01:03:46,173 INFO L396 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-14 01:03:46,173 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:03:46,173 INFO L85 PathProgramCache]: Analyzing trace with hash 420610026, now seen corresponding path program 3 times [2025-03-14 01:03:46,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:03:46,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1484412131] [2025-03-14 01:03:46,173 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-14 01:03:46,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:03:46,180 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 28 statements into 2 equivalence classes. [2025-03-14 01:03:46,182 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 21 of 28 statements. [2025-03-14 01:03:46,182 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-03-14 01:03:46,182 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:03:46,251 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-03-14 01:03:46,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:03:46,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1484412131] [2025-03-14 01:03:46,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1484412131] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-14 01:03:46,252 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-14 01:03:46,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-14 01:03:46,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255226355] [2025-03-14 01:03:46,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 01:03:46,252 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-14 01:03:46,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:03:46,252 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-14 01:03:46,252 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2025-03-14 01:03:46,255 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 34 [2025-03-14 01:03:46,255 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 275 transitions, 4756 flow. Second operand has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:03:46,255 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:03:46,255 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 34 [2025-03-14 01:03:46,255 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:03:47,041 INFO L124 PetriNetUnfolderBase]: 4259/7245 cut-off events. [2025-03-14 01:03:47,042 INFO L125 PetriNetUnfolderBase]: For 65577/65850 co-relation queries the response was YES. [2025-03-14 01:03:47,067 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50170 conditions, 7245 events. 4259/7245 cut-off events. For 65577/65850 co-relation queries the response was YES. Maximal size of possible extension queue 565. Compared 49650 event pairs, 160 based on Foata normal form. 18/7263 useless extension candidates. Maximal degree in co-relation 50110. Up to 1767 conditions per place. [2025-03-14 01:03:47,090 INFO L140 encePairwiseOnDemand]: 26/34 looper letters, 314 selfloop transitions, 105 changer transitions 6/428 dead transitions. [2025-03-14 01:03:47,090 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 428 transitions, 8009 flow [2025-03-14 01:03:47,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-14 01:03:47,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-03-14 01:03:47,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 127 transitions. [2025-03-14 01:03:47,091 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4150326797385621 [2025-03-14 01:03:47,091 INFO L175 Difference]: Start difference. First operand has 193 places, 275 transitions, 4756 flow. Second operand 9 states and 127 transitions. [2025-03-14 01:03:47,091 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 428 transitions, 8009 flow [2025-03-14 01:03:47,333 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 428 transitions, 7793 flow, removed 27 selfloop flow, removed 4 redundant places. [2025-03-14 01:03:47,338 INFO L231 Difference]: Finished difference. Result has 198 places, 281 transitions, 4916 flow [2025-03-14 01:03:47,338 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=4546, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=275, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4916, PETRI_PLACES=198, PETRI_TRANSITIONS=281} [2025-03-14 01:03:47,339 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 168 predicate places. [2025-03-14 01:03:47,339 INFO L471 AbstractCegarLoop]: Abstraction has has 198 places, 281 transitions, 4916 flow [2025-03-14 01:03:47,339 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:03:47,339 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:03:47,339 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:03:47,339 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2025-03-14 01:03:47,339 INFO L396 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-14 01:03:47,339 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:03:47,339 INFO L85 PathProgramCache]: Analyzing trace with hash -1733097057, now seen corresponding path program 1 times [2025-03-14 01:03:47,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:03:47,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960479740] [2025-03-14 01:03:47,340 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-14 01:03:47,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:03:47,344 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 28 statements into 1 equivalence classes. [2025-03-14 01:03:47,346 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 28 of 28 statements. [2025-03-14 01:03:47,346 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-14 01:03:47,346 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:03:47,388 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-14 01:03:47,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:03:47,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960479740] [2025-03-14 01:03:47,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1960479740] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-14 01:03:47,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [98153371] [2025-03-14 01:03:47,388 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-14 01:03:47,389 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-14 01:03:47,389 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-14 01:03:47,390 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-14 01:03:47,391 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2025-03-14 01:03:47,455 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 28 statements into 1 equivalence classes. [2025-03-14 01:03:47,471 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 28 of 28 statements. [2025-03-14 01:03:47,471 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-14 01:03:47,471 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:03:47,472 INFO L256 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-03-14 01:03:47,473 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-14 01:03:47,514 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-14 01:03:47,514 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-14 01:03:47,561 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-14 01:03:47,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [98153371] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-14 01:03:47,561 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-14 01:03:47,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 16 [2025-03-14 01:03:47,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630499955] [2025-03-14 01:03:47,562 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-14 01:03:47,562 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2025-03-14 01:03:47,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:03:47,562 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2025-03-14 01:03:47,562 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2025-03-14 01:03:47,602 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 34 [2025-03-14 01:03:47,602 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 281 transitions, 4916 flow. Second operand has 16 states, 16 states have (on average 8.0) internal successors, (128), 16 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:03:47,602 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:03:47,602 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 34 [2025-03-14 01:03:47,603 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:03:48,898 INFO L124 PetriNetUnfolderBase]: 5134/9030 cut-off events. [2025-03-14 01:03:48,898 INFO L125 PetriNetUnfolderBase]: For 96638/96978 co-relation queries the response was YES. [2025-03-14 01:03:48,939 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64179 conditions, 9030 events. 5134/9030 cut-off events. For 96638/96978 co-relation queries the response was YES. Maximal size of possible extension queue 712. Compared 67500 event pairs, 1271 based on Foata normal form. 316/9346 useless extension candidates. Maximal degree in co-relation 64119. Up to 2233 conditions per place. [2025-03-14 01:03:48,979 INFO L140 encePairwiseOnDemand]: 25/34 looper letters, 530 selfloop transitions, 141 changer transitions 22/696 dead transitions. [2025-03-14 01:03:48,979 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 696 transitions, 12276 flow [2025-03-14 01:03:48,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2025-03-14 01:03:48,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2025-03-14 01:03:48,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 245 transitions. [2025-03-14 01:03:48,980 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.42387543252595156 [2025-03-14 01:03:48,980 INFO L175 Difference]: Start difference. First operand has 198 places, 281 transitions, 4916 flow. Second operand 17 states and 245 transitions. [2025-03-14 01:03:48,980 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 696 transitions, 12276 flow [2025-03-14 01:03:49,264 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 696 transitions, 12123 flow, removed 22 selfloop flow, removed 3 redundant places. [2025-03-14 01:03:49,272 INFO L231 Difference]: Finished difference. Result has 212 places, 337 transitions, 6515 flow [2025-03-14 01:03:49,272 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=4414, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=260, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=6515, PETRI_PLACES=212, PETRI_TRANSITIONS=337} [2025-03-14 01:03:49,273 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 182 predicate places. [2025-03-14 01:03:49,273 INFO L471 AbstractCegarLoop]: Abstraction has has 212 places, 337 transitions, 6515 flow [2025-03-14 01:03:49,273 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 8.0) internal successors, (128), 16 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:03:49,273 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:03:49,273 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:03:49,279 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2025-03-14 01:03:49,473 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-14 01:03:49,474 INFO L396 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-14 01:03:49,474 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:03:49,474 INFO L85 PathProgramCache]: Analyzing trace with hash -1445298812, now seen corresponding path program 1 times [2025-03-14 01:03:49,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:03:49,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938733240] [2025-03-14 01:03:49,474 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-14 01:03:49,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:03:49,480 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 28 statements into 1 equivalence classes. [2025-03-14 01:03:49,483 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 28 of 28 statements. [2025-03-14 01:03:49,483 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-14 01:03:49,483 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:03:49,533 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-14 01:03:49,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:03:49,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938733240] [2025-03-14 01:03:49,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1938733240] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-14 01:03:49,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [233444574] [2025-03-14 01:03:49,533 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-14 01:03:49,533 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-14 01:03:49,533 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-14 01:03:49,535 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-14 01:03:49,536 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2025-03-14 01:03:49,605 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 28 statements into 1 equivalence classes. [2025-03-14 01:03:49,623 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 28 of 28 statements. [2025-03-14 01:03:49,623 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-14 01:03:49,623 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:03:49,624 INFO L256 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-03-14 01:03:49,624 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-14 01:03:49,675 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-14 01:03:49,675 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-14 01:03:49,737 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-14 01:03:49,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [233444574] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-14 01:03:49,737 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-14 01:03:49,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 16 [2025-03-14 01:03:49,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245254162] [2025-03-14 01:03:49,737 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-14 01:03:49,738 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2025-03-14 01:03:49,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:03:49,738 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2025-03-14 01:03:49,738 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2025-03-14 01:03:49,782 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 34 [2025-03-14 01:03:49,782 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 337 transitions, 6515 flow. Second operand has 16 states, 16 states have (on average 8.4375) internal successors, (135), 16 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:03:49,782 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:03:49,782 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 34 [2025-03-14 01:03:49,782 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:03:50,917 INFO L124 PetriNetUnfolderBase]: 3599/6902 cut-off events. [2025-03-14 01:03:50,918 INFO L125 PetriNetUnfolderBase]: For 80414/80580 co-relation queries the response was YES. [2025-03-14 01:03:50,954 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49431 conditions, 6902 events. 3599/6902 cut-off events. For 80414/80580 co-relation queries the response was YES. Maximal size of possible extension queue 572. Compared 54558 event pairs, 1037 based on Foata normal form. 324/7226 useless extension candidates. Maximal degree in co-relation 49369. Up to 2233 conditions per place. [2025-03-14 01:03:50,976 INFO L140 encePairwiseOnDemand]: 25/34 looper letters, 334 selfloop transitions, 85 changer transitions 148/570 dead transitions. [2025-03-14 01:03:50,977 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 570 transitions, 10487 flow [2025-03-14 01:03:50,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2025-03-14 01:03:50,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2025-03-14 01:03:50,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 229 transitions. [2025-03-14 01:03:50,978 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3961937716262976 [2025-03-14 01:03:50,978 INFO L175 Difference]: Start difference. First operand has 212 places, 337 transitions, 6515 flow. Second operand 17 states and 229 transitions. [2025-03-14 01:03:50,978 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 570 transitions, 10487 flow [2025-03-14 01:03:51,280 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 570 transitions, 10120 flow, removed 113 selfloop flow, removed 11 redundant places. [2025-03-14 01:03:51,285 INFO L231 Difference]: Finished difference. Result has 222 places, 326 transitions, 6098 flow [2025-03-14 01:03:51,286 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=5557, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=308, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=257, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=6098, PETRI_PLACES=222, PETRI_TRANSITIONS=326} [2025-03-14 01:03:51,286 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 192 predicate places. [2025-03-14 01:03:51,286 INFO L471 AbstractCegarLoop]: Abstraction has has 222 places, 326 transitions, 6098 flow [2025-03-14 01:03:51,286 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 8.4375) internal successors, (135), 16 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:03:51,286 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:03:51,286 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:03:51,293 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2025-03-14 01:03:51,487 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable80 [2025-03-14 01:03:51,487 INFO L396 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-14 01:03:51,487 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:03:51,488 INFO L85 PathProgramCache]: Analyzing trace with hash -695716090, now seen corresponding path program 4 times [2025-03-14 01:03:51,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:03:51,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100441662] [2025-03-14 01:03:51,488 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-14 01:03:51,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:03:51,493 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 28 statements into 2 equivalence classes. [2025-03-14 01:03:51,501 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 28 of 28 statements. [2025-03-14 01:03:51,501 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-14 01:03:51,501 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:03:51,741 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-14 01:03:51,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:03:51,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100441662] [2025-03-14 01:03:51,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [100441662] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-14 01:03:51,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1509274376] [2025-03-14 01:03:51,742 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-14 01:03:51,742 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-14 01:03:51,742 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-14 01:03:51,744 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-14 01:03:51,745 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2025-03-14 01:03:51,806 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 28 statements into 2 equivalence classes. [2025-03-14 01:03:51,821 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 28 of 28 statements. [2025-03-14 01:03:51,822 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-14 01:03:51,822 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:03:51,823 INFO L256 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 22 conjuncts are in the unsatisfiable core [2025-03-14 01:03:51,823 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-14 01:03:52,069 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-14 01:03:52,069 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-14 01:03:52,737 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-14 01:03:52,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1509274376] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-14 01:03:52,737 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-14 01:03:52,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 32 [2025-03-14 01:03:52,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794775735] [2025-03-14 01:03:52,738 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-14 01:03:52,738 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2025-03-14 01:03:52,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:03:52,738 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2025-03-14 01:03:52,738 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=185, Invalid=871, Unknown=0, NotChecked=0, Total=1056 [2025-03-14 01:03:52,823 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 34 [2025-03-14 01:03:52,823 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 326 transitions, 6098 flow. Second operand has 33 states, 33 states have (on average 6.363636363636363) internal successors, (210), 33 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:03:52,823 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:03:52,823 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 34 [2025-03-14 01:03:52,823 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:03:55,085 INFO L124 PetriNetUnfolderBase]: 5057/8888 cut-off events. [2025-03-14 01:03:55,085 INFO L125 PetriNetUnfolderBase]: For 112360/112460 co-relation queries the response was YES. [2025-03-14 01:03:55,136 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63299 conditions, 8888 events. 5057/8888 cut-off events. For 112360/112460 co-relation queries the response was YES. Maximal size of possible extension queue 630. Compared 64711 event pairs, 592 based on Foata normal form. 5/8893 useless extension candidates. Maximal degree in co-relation 63235. Up to 1729 conditions per place. [2025-03-14 01:03:55,172 INFO L140 encePairwiseOnDemand]: 18/34 looper letters, 799 selfloop transitions, 208 changer transitions 114/1123 dead transitions. [2025-03-14 01:03:55,172 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 1123 transitions, 19873 flow [2025-03-14 01:03:55,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2025-03-14 01:03:55,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2025-03-14 01:03:55,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 559 transitions. [2025-03-14 01:03:55,173 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.365359477124183 [2025-03-14 01:03:55,173 INFO L175 Difference]: Start difference. First operand has 222 places, 326 transitions, 6098 flow. Second operand 45 states and 559 transitions. [2025-03-14 01:03:55,173 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 255 places, 1123 transitions, 19873 flow [2025-03-14 01:03:55,785 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 1123 transitions, 19553 flow, removed 153 selfloop flow, removed 12 redundant places. [2025-03-14 01:03:55,798 INFO L231 Difference]: Finished difference. Result has 264 places, 466 transitions, 9274 flow [2025-03-14 01:03:55,798 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=6012, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=326, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=214, PETRI_DIFFERENCE_SUBTRAHEND_STATES=45, PETRI_FLOW=9274, PETRI_PLACES=264, PETRI_TRANSITIONS=466} [2025-03-14 01:03:55,798 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 234 predicate places. [2025-03-14 01:03:55,798 INFO L471 AbstractCegarLoop]: Abstraction has has 264 places, 466 transitions, 9274 flow [2025-03-14 01:03:55,799 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 6.363636363636363) internal successors, (210), 33 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:03:55,799 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:03:55,799 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:03:55,805 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2025-03-14 01:03:55,999 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81,32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-14 01:03:55,999 INFO L396 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-14 01:03:56,000 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:03:56,000 INFO L85 PathProgramCache]: Analyzing trace with hash -1650760206, now seen corresponding path program 5 times [2025-03-14 01:03:56,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:03:56,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160024850] [2025-03-14 01:03:56,000 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-14 01:03:56,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:03:56,006 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 28 statements into 2 equivalence classes. [2025-03-14 01:03:56,011 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 28 of 28 statements. [2025-03-14 01:03:56,011 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-14 01:03:56,011 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:03:56,175 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-14 01:03:56,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:03:56,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160024850] [2025-03-14 01:03:56,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1160024850] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-14 01:03:56,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1462382567] [2025-03-14 01:03:56,176 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-14 01:03:56,176 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-14 01:03:56,176 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-14 01:03:56,178 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-14 01:03:56,178 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2025-03-14 01:03:56,244 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 28 statements into 2 equivalence classes. [2025-03-14 01:03:56,262 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 28 of 28 statements. [2025-03-14 01:03:56,262 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-14 01:03:56,262 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:03:56,263 INFO L256 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 22 conjuncts are in the unsatisfiable core [2025-03-14 01:03:56,264 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-14 01:03:56,530 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-14 01:03:56,530 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-14 01:03:56,965 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-14 01:03:56,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1462382567] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-14 01:03:56,965 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-14 01:03:56,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 31 [2025-03-14 01:03:56,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728669154] [2025-03-14 01:03:56,965 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-14 01:03:56,966 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2025-03-14 01:03:56,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:03:56,966 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2025-03-14 01:03:56,966 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=195, Invalid=797, Unknown=0, NotChecked=0, Total=992 [2025-03-14 01:03:57,080 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 34 [2025-03-14 01:03:57,080 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 466 transitions, 9274 flow. Second operand has 32 states, 32 states have (on average 7.34375) internal successors, (235), 32 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:03:57,080 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:03:57,080 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 34 [2025-03-14 01:03:57,080 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand