./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-wmm/mix044.opt.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/mix044.opt.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 bb408c890b0d52a937687fd58d564d57121120b7f4647156375768e776a678b4 --- Real Ultimate output --- This is Ultimate 0.3.0-?-735b3cc-m [2025-03-14 00:50:56,690 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-14 00:50:56,742 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-14 00:50:56,745 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-14 00:50:56,746 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-14 00:50:56,758 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-14 00:50:56,759 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-14 00:50:56,759 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-14 00:50:56,760 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-14 00:50:56,760 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-14 00:50:56,760 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-14 00:50:56,760 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-14 00:50:56,760 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-14 00:50:56,760 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-14 00:50:56,760 INFO L153 SettingsManager]: * Use SBE=true [2025-03-14 00:50:56,760 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-14 00:50:56,760 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-14 00:50:56,761 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-14 00:50:56,761 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-14 00:50:56,761 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-14 00:50:56,761 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-14 00:50:56,761 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-14 00:50:56,761 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-14 00:50:56,761 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-14 00:50:56,761 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-14 00:50:56,761 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-14 00:50:56,761 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-14 00:50:56,761 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-14 00:50:56,762 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-14 00:50:56,762 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-14 00:50:56,762 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-14 00:50:56,762 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-14 00:50:56,762 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-14 00:50:56,762 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-14 00:50:56,762 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-14 00:50:56,762 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-14 00:50:56,762 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-14 00:50:56,762 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-14 00:50:56,763 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-14 00:50:56,763 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-14 00:50:56,763 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-14 00:50:56,763 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-14 00:50:56,763 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-14 00:50:56,763 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 -> bb408c890b0d52a937687fd58d564d57121120b7f4647156375768e776a678b4 [2025-03-14 00:50:57,004 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-14 00:50:57,010 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-14 00:50:57,011 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-14 00:50:57,012 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-14 00:50:57,012 INFO L274 PluginConnector]: CDTParser initialized [2025-03-14 00:50:57,013 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/mix044.opt.i [2025-03-14 00:50:58,224 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c6ec4d6a3/1b11702d2e3f4eae93b245c67498c182/FLAG7bce15318 [2025-03-14 00:50:58,534 INFO L384 CDTParser]: Found 1 translation units. [2025-03-14 00:50:58,538 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/mix044.opt.i [2025-03-14 00:50:58,550 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c6ec4d6a3/1b11702d2e3f4eae93b245c67498c182/FLAG7bce15318 [2025-03-14 00:50:58,817 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c6ec4d6a3/1b11702d2e3f4eae93b245c67498c182 [2025-03-14 00:50:58,819 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-14 00:50:58,820 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-14 00:50:58,821 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-14 00:50:58,821 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-14 00:50:58,824 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-14 00:50:58,825 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.03 12:50:58" (1/1) ... [2025-03-14 00:50:58,827 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b743ac2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 12:50:58, skipping insertion in model container [2025-03-14 00:50:58,827 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.03 12:50:58" (1/1) ... [2025-03-14 00:50:58,862 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-14 00:50:58,971 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/mix044.opt.i[944,957] [2025-03-14 00:50:59,077 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-14 00:50:59,091 INFO L200 MainTranslator]: Completed pre-run [2025-03-14 00:50:59,098 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/mix044.opt.i[944,957] [2025-03-14 00:50:59,142 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-14 00:50:59,169 INFO L204 MainTranslator]: Completed translation [2025-03-14 00:50:59,170 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 12:50:59 WrapperNode [2025-03-14 00:50:59,170 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-14 00:50:59,173 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-14 00:50:59,173 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-14 00:50:59,173 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-14 00:50:59,177 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 12:50:59" (1/1) ... [2025-03-14 00:50:59,186 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 12:50:59" (1/1) ... [2025-03-14 00:50:59,204 INFO L138 Inliner]: procedures = 176, calls = 55, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 153 [2025-03-14 00:50:59,204 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-14 00:50:59,205 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-14 00:50:59,205 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-14 00:50:59,205 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-14 00:50:59,211 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 12:50:59" (1/1) ... [2025-03-14 00:50:59,211 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 12:50:59" (1/1) ... [2025-03-14 00:50:59,213 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 12:50:59" (1/1) ... [2025-03-14 00:50:59,225 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 00:50:59,226 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 12:50:59" (1/1) ... [2025-03-14 00:50:59,226 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 12:50:59" (1/1) ... [2025-03-14 00:50:59,231 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 12:50:59" (1/1) ... [2025-03-14 00:50:59,231 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 12:50:59" (1/1) ... [2025-03-14 00:50:59,232 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 12:50:59" (1/1) ... [2025-03-14 00:50:59,233 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 12:50:59" (1/1) ... [2025-03-14 00:50:59,235 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-14 00:50:59,235 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-14 00:50:59,235 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-14 00:50:59,236 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-14 00:50:59,236 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 12:50:59" (1/1) ... [2025-03-14 00:50:59,246 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-14 00:50:59,256 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-14 00:50:59,267 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 00:50:59,270 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 00:50:59,288 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-03-14 00:50:59,289 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-14 00:50:59,289 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2025-03-14 00:50:59,289 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2025-03-14 00:50:59,289 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2025-03-14 00:50:59,290 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2025-03-14 00:50:59,290 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2025-03-14 00:50:59,290 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2025-03-14 00:50:59,290 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2025-03-14 00:50:59,290 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2025-03-14 00:50:59,290 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-14 00:50:59,290 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-03-14 00:50:59,290 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-14 00:50:59,290 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-14 00:50:59,291 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 00:50:59,400 INFO L256 CfgBuilder]: Building ICFG [2025-03-14 00:50:59,403 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-14 00:50:59,645 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-14 00:50:59,646 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-14 00:50:59,646 INFO L318 CfgBuilder]: Performing block encoding [2025-03-14 00:50:59,906 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-14 00:50:59,907 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 14.03 12:50:59 BoogieIcfgContainer [2025-03-14 00:50:59,907 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-14 00:50:59,910 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-14 00:50:59,910 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-14 00:50:59,914 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-14 00:50:59,914 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.03 12:50:58" (1/3) ... [2025-03-14 00:50:59,915 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3193eb5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.03 12:50:59, skipping insertion in model container [2025-03-14 00:50:59,916 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 12:50:59" (2/3) ... [2025-03-14 00:50:59,916 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3193eb5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.03 12:50:59, skipping insertion in model container [2025-03-14 00:50:59,916 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 14.03 12:50:59" (3/3) ... [2025-03-14 00:50:59,918 INFO L128 eAbstractionObserver]: Analyzing ICFG mix044.opt.i [2025-03-14 00:50:59,929 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-14 00:50:59,931 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG mix044.opt.i that has 5 procedures, 50 locations, 1 initial locations, 0 loop locations, and 2 error locations. [2025-03-14 00:50:59,931 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-14 00:50:59,980 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-03-14 00:51:00,010 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 62 places, 50 transitions, 116 flow [2025-03-14 00:51:00,041 INFO L124 PetriNetUnfolderBase]: 1/46 cut-off events. [2025-03-14 00:51:00,043 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-14 00:51:00,047 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59 conditions, 46 events. 1/46 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 99 event pairs, 0 based on Foata normal form. 0/43 useless extension candidates. Maximal degree in co-relation 50. Up to 2 conditions per place. [2025-03-14 00:51:00,048 INFO L82 GeneralOperation]: Start removeDead. Operand has 62 places, 50 transitions, 116 flow [2025-03-14 00:51:00,051 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 58 places, 46 transitions, 104 flow [2025-03-14 00:51:00,056 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-14 00:51:00,068 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;@7d6cf6c8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-14 00:51:00,068 INFO L334 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2025-03-14 00:51:00,075 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-14 00:51:00,075 INFO L124 PetriNetUnfolderBase]: 0/25 cut-off events. [2025-03-14 00:51:00,075 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-14 00:51:00,075 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 00:51:00,076 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 00:51:00,076 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting P3Err0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-03-14 00:51:00,080 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 00:51:00,080 INFO L85 PathProgramCache]: Analyzing trace with hash -909325538, now seen corresponding path program 1 times [2025-03-14 00:51:00,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 00:51:00,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599936305] [2025-03-14 00:51:00,086 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-14 00:51:00,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 00:51:00,166 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-03-14 00:51:00,194 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-03-14 00:51:00,195 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-14 00:51:00,196 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 00:51:00,528 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 00:51:00,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 00:51:00,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599936305] [2025-03-14 00:51:00,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [599936305] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-14 00:51:00,529 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-14 00:51:00,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-03-14 00:51:00,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018242976] [2025-03-14 00:51:00,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 00:51:00,536 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-14 00:51:00,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 00:51:00,554 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-14 00:51:00,555 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-14 00:51:00,556 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 50 [2025-03-14 00:51:00,559 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 46 transitions, 104 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 00:51:00,560 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 00:51:00,560 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 50 [2025-03-14 00:51:00,560 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 00:51:04,535 INFO L124 PetriNetUnfolderBase]: 46139/61167 cut-off events. [2025-03-14 00:51:04,535 INFO L125 PetriNetUnfolderBase]: For 236/236 co-relation queries the response was YES. [2025-03-14 00:51:04,647 INFO L83 FinitePrefix]: Finished finitePrefix Result has 122171 conditions, 61167 events. 46139/61167 cut-off events. For 236/236 co-relation queries the response was YES. Maximal size of possible extension queue 1751. Compared 353327 event pairs, 5315 based on Foata normal form. 1728/62643 useless extension candidates. Maximal degree in co-relation 122159. Up to 52921 conditions per place. [2025-03-14 00:51:04,870 INFO L140 encePairwiseOnDemand]: 46/50 looper letters, 55 selfloop transitions, 2 changer transitions 2/66 dead transitions. [2025-03-14 00:51:04,871 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 66 transitions, 262 flow [2025-03-14 00:51:04,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-14 00:51:04,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-14 00:51:04,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 95 transitions. [2025-03-14 00:51:04,886 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6333333333333333 [2025-03-14 00:51:04,887 INFO L175 Difference]: Start difference. First operand has 58 places, 46 transitions, 104 flow. Second operand 3 states and 95 transitions. [2025-03-14 00:51:04,888 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 66 transitions, 262 flow [2025-03-14 00:51:04,897 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 66 transitions, 258 flow, removed 0 selfloop flow, removed 4 redundant places. [2025-03-14 00:51:04,900 INFO L231 Difference]: Finished difference. Result has 55 places, 43 transitions, 98 flow [2025-03-14 00:51:04,902 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, 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 00:51:04,906 INFO L279 CegarLoopForPetriNet]: 58 programPoint places, -3 predicate places. [2025-03-14 00:51:04,907 INFO L471 AbstractCegarLoop]: Abstraction has has 55 places, 43 transitions, 98 flow [2025-03-14 00:51:04,908 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 00:51:04,908 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 00:51:04,908 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 00:51:04,908 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-14 00:51:04,909 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-03-14 00:51:04,909 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 00:51:04,910 INFO L85 PathProgramCache]: Analyzing trace with hash -295297183, now seen corresponding path program 1 times [2025-03-14 00:51:04,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 00:51:04,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497164095] [2025-03-14 00:51:04,910 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-14 00:51:04,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 00:51:04,931 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-03-14 00:51:05,000 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-03-14 00:51:05,001 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-14 00:51:05,001 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 00:51:05,825 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 00:51:05,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 00:51:05,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497164095] [2025-03-14 00:51:05,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [497164095] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-14 00:51:05,826 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-14 00:51:05,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-14 00:51:05,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369178181] [2025-03-14 00:51:05,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 00:51:05,827 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-14 00:51:05,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 00:51:05,828 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-14 00:51:05,829 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-03-14 00:51:05,832 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 50 [2025-03-14 00:51:05,834 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 43 transitions, 98 flow. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 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 00:51:05,834 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 00:51:05,834 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 50 [2025-03-14 00:51:05,835 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 00:51:13,740 INFO L124 PetriNetUnfolderBase]: 107536/143298 cut-off events. [2025-03-14 00:51:13,740 INFO L125 PetriNetUnfolderBase]: For 4092/4092 co-relation queries the response was YES. [2025-03-14 00:51:14,153 INFO L83 FinitePrefix]: Finished finitePrefix Result has 289897 conditions, 143298 events. 107536/143298 cut-off events. For 4092/4092 co-relation queries the response was YES. Maximal size of possible extension queue 3795. Compared 933117 event pairs, 4601 based on Foata normal form. 0/140701 useless extension candidates. Maximal degree in co-relation 289887. Up to 64579 conditions per place. [2025-03-14 00:51:14,457 INFO L140 encePairwiseOnDemand]: 36/50 looper letters, 80 selfloop transitions, 12 changer transitions 165/262 dead transitions. [2025-03-14 00:51:14,457 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 262 transitions, 1080 flow [2025-03-14 00:51:14,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-03-14 00:51:14,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2025-03-14 00:51:14,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 368 transitions. [2025-03-14 00:51:14,459 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6133333333333333 [2025-03-14 00:51:14,459 INFO L175 Difference]: Start difference. First operand has 55 places, 43 transitions, 98 flow. Second operand 12 states and 368 transitions. [2025-03-14 00:51:14,459 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 262 transitions, 1080 flow [2025-03-14 00:51:14,466 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 262 transitions, 1056 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-14 00:51:14,470 INFO L231 Difference]: Finished difference. Result has 72 places, 52 transitions, 217 flow [2025-03-14 00:51:14,470 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=217, PETRI_PLACES=72, PETRI_TRANSITIONS=52} [2025-03-14 00:51:14,471 INFO L279 CegarLoopForPetriNet]: 58 programPoint places, 14 predicate places. [2025-03-14 00:51:14,471 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 52 transitions, 217 flow [2025-03-14 00:51:14,471 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 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 00:51:14,471 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 00:51:14,471 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 00:51:14,471 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-14 00:51:14,471 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-03-14 00:51:14,472 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 00:51:14,472 INFO L85 PathProgramCache]: Analyzing trace with hash 669594818, now seen corresponding path program 1 times [2025-03-14 00:51:14,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 00:51:14,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312499847] [2025-03-14 00:51:14,472 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-14 00:51:14,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 00:51:14,483 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-03-14 00:51:14,500 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-03-14 00:51:14,500 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-14 00:51:14,500 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 00:51:15,002 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 00:51:15,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 00:51:15,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312499847] [2025-03-14 00:51:15,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1312499847] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-14 00:51:15,003 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-14 00:51:15,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-14 00:51:15,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468416700] [2025-03-14 00:51:15,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 00:51:15,003 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-14 00:51:15,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 00:51:15,004 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-14 00:51:15,004 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-03-14 00:51:15,007 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 50 [2025-03-14 00:51:15,008 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 52 transitions, 217 flow. Second operand has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 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 00:51:15,008 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 00:51:15,008 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 50 [2025-03-14 00:51:15,008 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 00:51:22,014 INFO L124 PetriNetUnfolderBase]: 77359/103634 cut-off events. [2025-03-14 00:51:22,014 INFO L125 PetriNetUnfolderBase]: For 111662/111674 co-relation queries the response was YES. [2025-03-14 00:51:22,427 INFO L83 FinitePrefix]: Finished finitePrefix Result has 304401 conditions, 103634 events. 77359/103634 cut-off events. For 111662/111674 co-relation queries the response was YES. Maximal size of possible extension queue 2623. Compared 636103 event pairs, 17783 based on Foata normal form. 2592/106191 useless extension candidates. Maximal degree in co-relation 304382. Up to 41029 conditions per place. [2025-03-14 00:51:22,738 INFO L140 encePairwiseOnDemand]: 38/50 looper letters, 78 selfloop transitions, 11 changer transitions 118/212 dead transitions. [2025-03-14 00:51:22,738 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 212 transitions, 1223 flow [2025-03-14 00:51:22,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-14 00:51:22,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-03-14 00:51:22,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 282 transitions. [2025-03-14 00:51:22,741 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.564 [2025-03-14 00:51:22,741 INFO L175 Difference]: Start difference. First operand has 72 places, 52 transitions, 217 flow. Second operand 10 states and 282 transitions. [2025-03-14 00:51:22,741 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 212 transitions, 1223 flow [2025-03-14 00:51:25,162 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 212 transitions, 1147 flow, removed 38 selfloop flow, removed 5 redundant places. [2025-03-14 00:51:25,164 INFO L231 Difference]: Finished difference. Result has 76 places, 58 transitions, 310 flow [2025-03-14 00:51:25,164 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=197, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=310, PETRI_PLACES=76, PETRI_TRANSITIONS=58} [2025-03-14 00:51:25,164 INFO L279 CegarLoopForPetriNet]: 58 programPoint places, 18 predicate places. [2025-03-14 00:51:25,164 INFO L471 AbstractCegarLoop]: Abstraction has has 76 places, 58 transitions, 310 flow [2025-03-14 00:51:25,165 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 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 00:51:25,165 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 00:51:25,165 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 00:51:25,165 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-14 00:51:25,165 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-03-14 00:51:25,165 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 00:51:25,165 INFO L85 PathProgramCache]: Analyzing trace with hash 1254492991, now seen corresponding path program 1 times [2025-03-14 00:51:25,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 00:51:25,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852485495] [2025-03-14 00:51:25,166 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-14 00:51:25,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 00:51:25,173 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-03-14 00:51:25,197 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-03-14 00:51:25,199 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-14 00:51:25,199 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 00:51:25,328 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 00:51:25,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 00:51:25,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852485495] [2025-03-14 00:51:25,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1852485495] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-14 00:51:25,329 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-14 00:51:25,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-14 00:51:25,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897795441] [2025-03-14 00:51:25,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 00:51:25,330 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-14 00:51:25,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 00:51:25,331 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-14 00:51:25,331 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-14 00:51:25,331 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 50 [2025-03-14 00:51:25,332 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 58 transitions, 310 flow. Second operand has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 0 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 00:51:25,332 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 00:51:25,332 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 50 [2025-03-14 00:51:25,332 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 00:51:30,138 INFO L124 PetriNetUnfolderBase]: 55094/76491 cut-off events. [2025-03-14 00:51:30,138 INFO L125 PetriNetUnfolderBase]: For 126322/126334 co-relation queries the response was YES. [2025-03-14 00:51:30,502 INFO L83 FinitePrefix]: Finished finitePrefix Result has 231481 conditions, 76491 events. 55094/76491 cut-off events. For 126322/126334 co-relation queries the response was YES. Maximal size of possible extension queue 2006. Compared 496388 event pairs, 7460 based on Foata normal form. 2868/79335 useless extension candidates. Maximal degree in co-relation 231456. Up to 38945 conditions per place. [2025-03-14 00:51:30,728 INFO L140 encePairwiseOnDemand]: 43/50 looper letters, 121 selfloop transitions, 6 changer transitions 1/134 dead transitions. [2025-03-14 00:51:30,728 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 134 transitions, 1010 flow [2025-03-14 00:51:30,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-14 00:51:30,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-14 00:51:30,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 130 transitions. [2025-03-14 00:51:30,729 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.65 [2025-03-14 00:51:30,729 INFO L175 Difference]: Start difference. First operand has 76 places, 58 transitions, 310 flow. Second operand 4 states and 130 transitions. [2025-03-14 00:51:30,729 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 134 transitions, 1010 flow [2025-03-14 00:51:32,432 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 134 transitions, 991 flow, removed 6 selfloop flow, removed 3 redundant places. [2025-03-14 00:51:32,434 INFO L231 Difference]: Finished difference. Result has 72 places, 62 transitions, 337 flow [2025-03-14 00:51:32,434 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=295, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=337, PETRI_PLACES=72, PETRI_TRANSITIONS=62} [2025-03-14 00:51:32,434 INFO L279 CegarLoopForPetriNet]: 58 programPoint places, 14 predicate places. [2025-03-14 00:51:32,435 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 62 transitions, 337 flow [2025-03-14 00:51:32,435 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 0 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 00:51:32,435 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 00:51:32,435 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 00:51:32,435 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-14 00:51:32,435 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-03-14 00:51:32,435 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 00:51:32,435 INFO L85 PathProgramCache]: Analyzing trace with hash -1769911683, now seen corresponding path program 1 times [2025-03-14 00:51:32,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 00:51:32,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889911106] [2025-03-14 00:51:32,435 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-14 00:51:32,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 00:51:32,441 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 25 statements into 1 equivalence classes. [2025-03-14 00:51:32,454 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 25 of 25 statements. [2025-03-14 00:51:32,454 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-14 00:51:32,454 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 00:51:32,867 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 00:51:32,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 00:51:32,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889911106] [2025-03-14 00:51:32,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1889911106] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-14 00:51:32,868 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-14 00:51:32,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-14 00:51:32,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144747382] [2025-03-14 00:51:32,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 00:51:32,868 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-14 00:51:32,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 00:51:32,869 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-14 00:51:32,869 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-03-14 00:51:32,873 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 50 [2025-03-14 00:51:32,873 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 62 transitions, 337 flow. Second operand has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 0 states have call successors, (0), 0 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 00:51:32,873 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 00:51:32,873 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 50 [2025-03-14 00:51:32,873 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand