./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-wmm/mix023_tso.i --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/pthread-wmm/mix023_tso.i -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 19245e5542f28ce8a07a1858e0d4c05190b543a3d82e804c6a4eebc044c13d81 --- Real Ultimate output --- This is Ultimate 0.3.0-?-735b3cc-m [2025-03-14 00:49:16,913 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-14 00:49:16,969 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-14 00:49:16,974 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-14 00:49:16,975 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-14 00:49:16,996 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-14 00:49:16,996 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-14 00:49:16,996 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-14 00:49:16,997 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-14 00:49:16,997 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-14 00:49:16,997 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-14 00:49:16,997 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-14 00:49:16,997 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-14 00:49:16,997 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-14 00:49:16,997 INFO L153 SettingsManager]: * Use SBE=true [2025-03-14 00:49:16,997 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-14 00:49:16,997 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-14 00:49:16,997 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-14 00:49:16,999 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-14 00:49:16,999 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-14 00:49:16,999 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-14 00:49:16,999 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-14 00:49:16,999 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-14 00:49:16,999 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-14 00:49:16,999 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-14 00:49:16,999 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-14 00:49:16,999 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-14 00:49:16,999 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-14 00:49:17,000 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-14 00:49:17,000 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-14 00:49:17,000 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-14 00:49:17,000 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-14 00:49:17,000 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-14 00:49:17,000 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-14 00:49:17,000 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-14 00:49:17,000 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-14 00:49:17,000 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-14 00:49:17,000 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-14 00:49:17,000 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-14 00:49:17,000 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-14 00:49:17,000 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-14 00:49:17,001 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-14 00:49:17,001 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-14 00:49:17,001 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 -> 19245e5542f28ce8a07a1858e0d4c05190b543a3d82e804c6a4eebc044c13d81 [2025-03-14 00:49:17,252 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-14 00:49:17,258 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-14 00:49:17,260 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-14 00:49:17,260 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-14 00:49:17,261 INFO L274 PluginConnector]: CDTParser initialized [2025-03-14 00:49:17,261 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/mix023_tso.i [2025-03-14 00:49:17,781 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5ee246582/a162c04dc2654ffb92ad5816467dde4e/FLAG0402882a3 [2025-03-14 00:49:19,403 INFO L384 CDTParser]: Found 1 translation units. [2025-03-14 00:49:19,404 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/mix023_tso.i [2025-03-14 00:49:19,422 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5ee246582/a162c04dc2654ffb92ad5816467dde4e/FLAG0402882a3 [2025-03-14 00:49:19,440 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5ee246582/a162c04dc2654ffb92ad5816467dde4e [2025-03-14 00:49:19,442 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-14 00:49:19,444 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-14 00:49:19,445 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-14 00:49:19,446 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-14 00:49:19,449 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-14 00:49:19,450 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.03 12:49:19" (1/1) ... [2025-03-14 00:49:19,451 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@16c994cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 12:49:19, skipping insertion in model container [2025-03-14 00:49:19,451 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.03 12:49:19" (1/1) ... [2025-03-14 00:49:19,482 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-14 00:49:19,602 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/pthread-wmm/mix023_tso.i[944,957] [2025-03-14 00:49:19,751 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-14 00:49:19,760 INFO L200 MainTranslator]: Completed pre-run [2025-03-14 00:49:19,769 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/pthread-wmm/mix023_tso.i[944,957] [2025-03-14 00:49:19,832 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-14 00:49:19,856 INFO L204 MainTranslator]: Completed translation [2025-03-14 00:49:19,857 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 12:49:19 WrapperNode [2025-03-14 00:49:19,858 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-14 00:49:19,858 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-14 00:49:19,859 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-14 00:49:19,859 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-14 00:49:19,864 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 12:49:19" (1/1) ... [2025-03-14 00:49:19,879 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 12:49:19" (1/1) ... [2025-03-14 00:49:19,913 INFO L138 Inliner]: procedures = 176, calls = 56, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 273 [2025-03-14 00:49:19,913 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-14 00:49:19,913 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-14 00:49:19,914 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-14 00:49:19,914 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-14 00:49:19,920 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 12:49:19" (1/1) ... [2025-03-14 00:49:19,920 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 12:49:19" (1/1) ... [2025-03-14 00:49:19,926 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 12:49:19" (1/1) ... [2025-03-14 00:49:19,959 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2025-03-14 00:49:19,960 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 12:49:19" (1/1) ... [2025-03-14 00:49:19,960 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 12:49:19" (1/1) ... [2025-03-14 00:49:19,974 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 12:49:19" (1/1) ... [2025-03-14 00:49:19,976 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 12:49:19" (1/1) ... [2025-03-14 00:49:19,978 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 12:49:19" (1/1) ... [2025-03-14 00:49:19,979 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 12:49:19" (1/1) ... [2025-03-14 00:49:19,984 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-14 00:49:19,985 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-14 00:49:19,985 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-14 00:49:19,985 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-14 00:49:19,986 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 12:49:19" (1/1) ... [2025-03-14 00:49:19,992 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-14 00:49:20,004 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-14 00:49:20,017 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 00:49:20,023 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 00:49:20,039 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-03-14 00:49:20,040 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-14 00:49:20,040 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2025-03-14 00:49:20,040 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2025-03-14 00:49:20,040 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2025-03-14 00:49:20,040 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2025-03-14 00:49:20,041 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2025-03-14 00:49:20,041 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2025-03-14 00:49:20,041 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2025-03-14 00:49:20,041 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2025-03-14 00:49:20,041 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-14 00:49:20,041 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-03-14 00:49:20,041 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-14 00:49:20,041 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-14 00:49:20,042 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 00:49:20,168 INFO L256 CfgBuilder]: Building ICFG [2025-03-14 00:49:20,170 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-14 00:49:20,560 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-14 00:49:20,560 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-14 00:49:20,561 INFO L318 CfgBuilder]: Performing block encoding [2025-03-14 00:49:21,039 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-14 00:49:21,039 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 14.03 12:49:21 BoogieIcfgContainer [2025-03-14 00:49:21,039 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-14 00:49:21,041 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-14 00:49:21,042 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-14 00:49:21,045 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-14 00:49:21,045 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.03 12:49:19" (1/3) ... [2025-03-14 00:49:21,046 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e35664e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.03 12:49:21, skipping insertion in model container [2025-03-14 00:49:21,046 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 12:49:19" (2/3) ... [2025-03-14 00:49:21,046 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e35664e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.03 12:49:21, skipping insertion in model container [2025-03-14 00:49:21,047 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 14.03 12:49:21" (3/3) ... [2025-03-14 00:49:21,048 INFO L128 eAbstractionObserver]: Analyzing ICFG mix023_tso.i [2025-03-14 00:49:21,061 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-14 00:49:21,063 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG mix023_tso.i that has 5 procedures, 51 locations, 1 initial locations, 0 loop locations, and 3 error locations. [2025-03-14 00:49:21,064 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-14 00:49:21,127 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-03-14 00:49:21,158 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 63 places, 51 transitions, 118 flow [2025-03-14 00:49:21,192 INFO L124 PetriNetUnfolderBase]: 1/47 cut-off events. [2025-03-14 00:49:21,195 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-14 00:49:21,199 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60 conditions, 47 events. 1/47 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 106 event pairs, 0 based on Foata normal form. 0/43 useless extension candidates. Maximal degree in co-relation 51. Up to 2 conditions per place. [2025-03-14 00:49:21,201 INFO L82 GeneralOperation]: Start removeDead. Operand has 63 places, 51 transitions, 118 flow [2025-03-14 00:49:21,204 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 59 places, 47 transitions, 106 flow [2025-03-14 00:49:21,215 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-14 00:49:21,227 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;@7bcd3ade, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-14 00:49:21,228 INFO L334 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2025-03-14 00:49:21,235 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-14 00:49:21,235 INFO L124 PetriNetUnfolderBase]: 0/10 cut-off events. [2025-03-14 00:49:21,235 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-14 00:49:21,235 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 00:49:21,236 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2025-03-14 00:49:21,236 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting P1Err0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2025-03-14 00:49:21,240 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 00:49:21,241 INFO L85 PathProgramCache]: Analyzing trace with hash 2000734729, now seen corresponding path program 1 times [2025-03-14 00:49:21,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 00:49:21,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560979974] [2025-03-14 00:49:21,247 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-14 00:49:21,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 00:49:21,318 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-03-14 00:49:21,356 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-03-14 00:49:21,358 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-14 00:49:21,358 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 00:49:21,636 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 00:49:21,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 00:49:21,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560979974] [2025-03-14 00:49:21,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [560979974] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-14 00:49:21,638 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-14 00:49:21,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-03-14 00:49:21,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481173943] [2025-03-14 00:49:21,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 00:49:21,643 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-14 00:49:21,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 00:49:21,662 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-14 00:49:21,662 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-14 00:49:21,664 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 51 [2025-03-14 00:49:21,666 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 47 transitions, 106 flow. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 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 00:49:21,666 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 00:49:21,666 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 51 [2025-03-14 00:49:21,666 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 00:49:27,963 INFO L124 PetriNetUnfolderBase]: 54225/71726 cut-off events. [2025-03-14 00:49:27,963 INFO L125 PetriNetUnfolderBase]: For 288/288 co-relation queries the response was YES. [2025-03-14 00:49:28,098 INFO L83 FinitePrefix]: Finished finitePrefix Result has 143288 conditions, 71726 events. 54225/71726 cut-off events. For 288/288 co-relation queries the response was YES. Maximal size of possible extension queue 2210. Compared 444535 event pairs, 5709 based on Foata normal form. 1980/71395 useless extension candidates. Maximal degree in co-relation 143276. Up to 62845 conditions per place. [2025-03-14 00:49:28,313 INFO L140 encePairwiseOnDemand]: 47/51 looper letters, 64 selfloop transitions, 2 changer transitions 0/73 dead transitions. [2025-03-14 00:49:28,313 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 73 transitions, 296 flow [2025-03-14 00:49:28,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-14 00:49:28,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-14 00:49:28,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 102 transitions. [2025-03-14 00:49:28,323 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2025-03-14 00:49:28,324 INFO L175 Difference]: Start difference. First operand has 59 places, 47 transitions, 106 flow. Second operand 3 states and 102 transitions. [2025-03-14 00:49:28,325 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 73 transitions, 296 flow [2025-03-14 00:49:28,329 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 73 transitions, 290 flow, removed 0 selfloop flow, removed 4 redundant places. [2025-03-14 00:49:28,331 INFO L231 Difference]: Finished difference. Result has 56 places, 45 transitions, 102 flow [2025-03-14 00:49:28,333 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=102, PETRI_PLACES=56, PETRI_TRANSITIONS=45} [2025-03-14 00:49:28,335 INFO L279 CegarLoopForPetriNet]: 59 programPoint places, -3 predicate places. [2025-03-14 00:49:28,335 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 45 transitions, 102 flow [2025-03-14 00:49:28,335 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 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 00:49:28,335 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 00:49:28,335 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 00:49:28,335 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-14 00:49:28,335 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting P3Err0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2025-03-14 00:49:28,336 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 00:49:28,336 INFO L85 PathProgramCache]: Analyzing trace with hash -1407045066, now seen corresponding path program 1 times [2025-03-14 00:49:28,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 00:49:28,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2053787530] [2025-03-14 00:49:28,336 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-14 00:49:28,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 00:49:28,346 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-03-14 00:49:28,356 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-03-14 00:49:28,356 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-14 00:49:28,356 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 00:49:28,484 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 00:49:28,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 00:49:28,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2053787530] [2025-03-14 00:49:28,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2053787530] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-14 00:49:28,485 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-14 00:49:28,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-03-14 00:49:28,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20029542] [2025-03-14 00:49:28,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 00:49:28,486 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-14 00:49:28,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 00:49:28,487 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-14 00:49:28,487 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-14 00:49:28,487 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 51 [2025-03-14 00:49:28,487 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 45 transitions, 102 flow. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 00:49:28,487 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 00:49:28,487 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 51 [2025-03-14 00:49:28,487 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 00:49:33,835 INFO L124 PetriNetUnfolderBase]: 47373/62891 cut-off events. [2025-03-14 00:49:33,835 INFO L125 PetriNetUnfolderBase]: For 2100/2100 co-relation queries the response was YES. [2025-03-14 00:49:33,991 INFO L83 FinitePrefix]: Finished finitePrefix Result has 127683 conditions, 62891 events. 47373/62891 cut-off events. For 2100/2100 co-relation queries the response was YES. Maximal size of possible extension queue 1855. Compared 367497 event pairs, 6261 based on Foata normal form. 0/62609 useless extension candidates. Maximal degree in co-relation 127673. Up to 53209 conditions per place. [2025-03-14 00:49:34,162 INFO L140 encePairwiseOnDemand]: 48/51 looper letters, 56 selfloop transitions, 2 changer transitions 2/67 dead transitions. [2025-03-14 00:49:34,163 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 67 transitions, 268 flow [2025-03-14 00:49:34,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-14 00:49:34,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-14 00:49:34,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 94 transitions. [2025-03-14 00:49:34,164 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6143790849673203 [2025-03-14 00:49:34,164 INFO L175 Difference]: Start difference. First operand has 56 places, 45 transitions, 102 flow. Second operand 3 states and 94 transitions. [2025-03-14 00:49:34,164 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 67 transitions, 268 flow [2025-03-14 00:49:34,166 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 67 transitions, 262 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-14 00:49:34,167 INFO L231 Difference]: Finished difference. Result has 55 places, 43 transitions, 98 flow [2025-03-14 00:49:34,167 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=98, PETRI_PLACES=55, PETRI_TRANSITIONS=43} [2025-03-14 00:49:34,168 INFO L279 CegarLoopForPetriNet]: 59 programPoint places, -4 predicate places. [2025-03-14 00:49:34,168 INFO L471 AbstractCegarLoop]: Abstraction has has 55 places, 43 transitions, 98 flow [2025-03-14 00:49:34,168 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 00:49:34,168 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 00:49:34,168 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 00:49:34,169 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-14 00:49:34,169 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2025-03-14 00:49:34,169 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 00:49:34,169 INFO L85 PathProgramCache]: Analyzing trace with hash -1589711440, now seen corresponding path program 1 times [2025-03-14 00:49:34,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 00:49:34,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346955234] [2025-03-14 00:49:34,170 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-14 00:49:34,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 00:49:34,189 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-03-14 00:49:34,292 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-03-14 00:49:34,292 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-14 00:49:34,292 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 00:49:34,551 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 00:49:34,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 00:49:34,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1346955234] [2025-03-14 00:49:34,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1346955234] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-14 00:49:34,554 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-14 00:49:34,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-14 00:49:34,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155216189] [2025-03-14 00:49:34,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 00:49:34,555 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-14 00:49:34,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 00:49:34,555 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-14 00:49:34,555 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-14 00:49:34,555 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 51 [2025-03-14 00:49:34,556 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 43 transitions, 98 flow. Second operand has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 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 00:49:34,556 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 00:49:34,556 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 51 [2025-03-14 00:49:34,556 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 00:49:39,880 INFO L124 PetriNetUnfolderBase]: 38009/54855 cut-off events. [2025-03-14 00:49:39,880 INFO L125 PetriNetUnfolderBase]: For 1616/1616 co-relation queries the response was YES. [2025-03-14 00:49:40,000 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107799 conditions, 54855 events. 38009/54855 cut-off events. For 1616/1616 co-relation queries the response was YES. Maximal size of possible extension queue 1784. Compared 378718 event pairs, 5331 based on Foata normal form. 1764/55235 useless extension candidates. Maximal degree in co-relation 107789. Up to 28641 conditions per place. [2025-03-14 00:49:40,134 INFO L140 encePairwiseOnDemand]: 44/51 looper letters, 77 selfloop transitions, 6 changer transitions 1/91 dead transitions. [2025-03-14 00:49:40,134 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 91 transitions, 372 flow [2025-03-14 00:49:40,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-14 00:49:40,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-14 00:49:40,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 130 transitions. [2025-03-14 00:49:40,140 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6372549019607843 [2025-03-14 00:49:40,140 INFO L175 Difference]: Start difference. First operand has 55 places, 43 transitions, 98 flow. Second operand 4 states and 130 transitions. [2025-03-14 00:49:40,140 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 91 transitions, 372 flow [2025-03-14 00:49:40,150 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 91 transitions, 364 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-14 00:49:40,152 INFO L231 Difference]: Finished difference. Result has 57 places, 47 transitions, 136 flow [2025-03-14 00:49:40,153 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=136, PETRI_PLACES=57, PETRI_TRANSITIONS=47} [2025-03-14 00:49:40,154 INFO L279 CegarLoopForPetriNet]: 59 programPoint places, -2 predicate places. [2025-03-14 00:49:40,154 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 47 transitions, 136 flow [2025-03-14 00:49:40,154 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 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 00:49:40,154 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 00:49:40,154 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 00:49:40,154 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-14 00:49:40,154 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2025-03-14 00:49:40,155 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 00:49:40,155 INFO L85 PathProgramCache]: Analyzing trace with hash -47859350, now seen corresponding path program 1 times [2025-03-14 00:49:40,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 00:49:40,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462182792] [2025-03-14 00:49:40,155 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-14 00:49:40,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 00:49:40,167 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-03-14 00:49:40,240 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-03-14 00:49:40,240 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-14 00:49:40,240 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 00:49:40,449 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 00:49:40,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 00:49:40,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [462182792] [2025-03-14 00:49:40,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [462182792] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-14 00:49:40,450 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-14 00:49:40,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-14 00:49:40,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616016518] [2025-03-14 00:49:40,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 00:49:40,451 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-14 00:49:40,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 00:49:40,451 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-14 00:49:40,451 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-14 00:49:40,452 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 51 [2025-03-14 00:49:40,452 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 47 transitions, 136 flow. Second operand has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 0 states have call successors, (0), 0 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 00:49:40,452 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 00:49:40,452 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 51 [2025-03-14 00:49:40,452 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 00:49:43,336 INFO L124 PetriNetUnfolderBase]: 24529/35215 cut-off events. [2025-03-14 00:49:43,337 INFO L125 PetriNetUnfolderBase]: For 6828/6828 co-relation queries the response was YES. [2025-03-14 00:49:43,431 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78357 conditions, 35215 events. 24529/35215 cut-off events. For 6828/6828 co-relation queries the response was YES. Maximal size of possible extension queue 927. Compared 222079 event pairs, 3173 based on Foata normal form. 1364/35915 useless extension candidates. Maximal degree in co-relation 78345. Up to 12441 conditions per place. [2025-03-14 00:49:43,520 INFO L140 encePairwiseOnDemand]: 44/51 looper letters, 100 selfloop transitions, 10 changer transitions 1/118 dead transitions. [2025-03-14 00:49:43,521 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 118 transitions, 529 flow [2025-03-14 00:49:43,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-14 00:49:43,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-14 00:49:43,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 168 transitions. [2025-03-14 00:49:43,522 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6588235294117647 [2025-03-14 00:49:43,522 INFO L175 Difference]: Start difference. First operand has 57 places, 47 transitions, 136 flow. Second operand 5 states and 168 transitions. [2025-03-14 00:49:43,522 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 118 transitions, 529 flow [2025-03-14 00:49:43,529 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 118 transitions, 518 flow, removed 1 selfloop flow, removed 2 redundant places. [2025-03-14 00:49:43,530 INFO L231 Difference]: Finished difference. Result has 61 places, 51 transitions, 188 flow [2025-03-14 00:49:43,531 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=127, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=188, PETRI_PLACES=61, PETRI_TRANSITIONS=51} [2025-03-14 00:49:43,531 INFO L279 CegarLoopForPetriNet]: 59 programPoint places, 2 predicate places. [2025-03-14 00:49:43,531 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 51 transitions, 188 flow [2025-03-14 00:49:43,531 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 0 states have call successors, (0), 0 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 00:49:43,532 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 00:49:43,532 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 00:49:43,532 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-14 00:49:43,532 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2025-03-14 00:49:43,532 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 00:49:43,532 INFO L85 PathProgramCache]: Analyzing trace with hash 1734395840, now seen corresponding path program 1 times [2025-03-14 00:49:43,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 00:49:43,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487828749] [2025-03-14 00:49:43,532 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-14 00:49:43,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 00:49:43,543 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 26 statements into 1 equivalence classes. [2025-03-14 00:49:43,644 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 26 of 26 statements. [2025-03-14 00:49:43,645 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-14 00:49:43,645 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 00:49:43,883 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 00:49:43,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 00:49:43,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487828749] [2025-03-14 00:49:43,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1487828749] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-14 00:49:43,883 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-14 00:49:43,883 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-14 00:49:43,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795298607] [2025-03-14 00:49:43,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 00:49:43,884 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-14 00:49:43,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 00:49:43,884 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-14 00:49:43,884 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2025-03-14 00:49:43,884 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 51 [2025-03-14 00:49:43,884 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 51 transitions, 188 flow. Second operand has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 00:49:43,884 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 00:49:43,884 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 51 [2025-03-14 00:49:43,884 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand