./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-wmm/mix046.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f8ab0bd5 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/mix046.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 f69f777f524a62a415fc7cacc9442c44e05883e29c36815b4e0d58199826b331 --- Real Ultimate output --- This is Ultimate 0.3.0-?-f8ab0bd-m [2025-03-13 21:32:20,483 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-13 21:32:20,541 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-13 21:32:20,546 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-13 21:32:20,546 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-13 21:32:20,564 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-13 21:32:20,565 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-13 21:32:20,565 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-13 21:32:20,565 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-13 21:32:20,565 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-13 21:32:20,565 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-13 21:32:20,565 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-13 21:32:20,566 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-13 21:32:20,566 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-13 21:32:20,566 INFO L153 SettingsManager]: * Use SBE=true [2025-03-13 21:32:20,566 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-13 21:32:20,566 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-13 21:32:20,566 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-13 21:32:20,566 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-13 21:32:20,566 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-13 21:32:20,566 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-13 21:32:20,566 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-13 21:32:20,566 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-13 21:32:20,566 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-13 21:32:20,566 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-13 21:32:20,567 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-13 21:32:20,567 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-13 21:32:20,567 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-13 21:32:20,567 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-13 21:32:20,567 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-13 21:32:20,568 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-13 21:32:20,568 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-13 21:32:20,568 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-13 21:32:20,568 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-13 21:32:20,568 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-13 21:32:20,568 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-13 21:32:20,568 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-13 21:32:20,568 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-13 21:32:20,568 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-13 21:32:20,568 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-13 21:32:20,568 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-13 21:32:20,568 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-13 21:32:20,568 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-13 21:32:20,568 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 -> f69f777f524a62a415fc7cacc9442c44e05883e29c36815b4e0d58199826b331 [2025-03-13 21:32:20,773 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-13 21:32:20,781 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-13 21:32:20,783 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-13 21:32:20,784 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-13 21:32:20,784 INFO L274 PluginConnector]: CDTParser initialized [2025-03-13 21:32:20,786 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/mix046.opt.i [2025-03-13 21:32:21,896 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e7842d009/b1839689239f4cc6982b9fe016508584/FLAGb5cd8c6c6 [2025-03-13 21:32:22,153 INFO L384 CDTParser]: Found 1 translation units. [2025-03-13 21:32:22,154 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/mix046.opt.i [2025-03-13 21:32:22,164 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e7842d009/b1839689239f4cc6982b9fe016508584/FLAGb5cd8c6c6 [2025-03-13 21:32:22,462 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e7842d009/b1839689239f4cc6982b9fe016508584 [2025-03-13 21:32:22,464 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-13 21:32:22,465 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-13 21:32:22,466 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-13 21:32:22,466 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-13 21:32:22,469 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-13 21:32:22,469 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.03 09:32:22" (1/1) ... [2025-03-13 21:32:22,470 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@cd58d0a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:32:22, skipping insertion in model container [2025-03-13 21:32:22,470 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.03 09:32:22" (1/1) ... [2025-03-13 21:32:22,490 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-13 21:32:22,613 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/mix046.opt.i[944,957] [2025-03-13 21:32:22,793 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-13 21:32:22,804 INFO L200 MainTranslator]: Completed pre-run [2025-03-13 21:32:22,812 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/mix046.opt.i[944,957] [2025-03-13 21:32:22,857 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-13 21:32:22,881 INFO L204 MainTranslator]: Completed translation [2025-03-13 21:32:22,881 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:32:22 WrapperNode [2025-03-13 21:32:22,881 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-13 21:32:22,882 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-13 21:32:22,882 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-13 21:32:22,882 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-13 21:32:22,886 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:32:22" (1/1) ... [2025-03-13 21:32:22,898 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:32:22" (1/1) ... [2025-03-13 21:32:22,921 INFO L138 Inliner]: procedures = 176, calls = 55, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 153 [2025-03-13 21:32:22,924 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-13 21:32:22,924 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-13 21:32:22,924 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-13 21:32:22,925 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-13 21:32:22,931 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:32:22" (1/1) ... [2025-03-13 21:32:22,931 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:32:22" (1/1) ... [2025-03-13 21:32:22,933 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:32:22" (1/1) ... [2025-03-13 21:32:22,943 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]. [2025-03-13 21:32:22,944 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:32:22" (1/1) ... [2025-03-13 21:32:22,944 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:32:22" (1/1) ... [2025-03-13 21:32:22,949 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:32:22" (1/1) ... [2025-03-13 21:32:22,950 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:32:22" (1/1) ... [2025-03-13 21:32:22,951 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:32:22" (1/1) ... [2025-03-13 21:32:22,951 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:32:22" (1/1) ... [2025-03-13 21:32:22,953 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-13 21:32:22,954 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-13 21:32:22,954 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-13 21:32:22,954 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-13 21:32:22,954 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:32:22" (1/1) ... [2025-03-13 21:32:22,958 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-13 21:32:22,975 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-13 21:32:22,987 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) [2025-03-13 21:32:22,992 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 [2025-03-13 21:32:23,010 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-03-13 21:32:23,010 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-13 21:32:23,010 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2025-03-13 21:32:23,010 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2025-03-13 21:32:23,010 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2025-03-13 21:32:23,010 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2025-03-13 21:32:23,010 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2025-03-13 21:32:23,010 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2025-03-13 21:32:23,010 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2025-03-13 21:32:23,010 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2025-03-13 21:32:23,010 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-13 21:32:23,010 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-03-13 21:32:23,010 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-13 21:32:23,010 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-13 21:32:23,011 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-03-13 21:32:23,123 INFO L256 CfgBuilder]: Building ICFG [2025-03-13 21:32:23,125 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-13 21:32:23,350 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-13 21:32:23,351 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-13 21:32:23,351 INFO L318 CfgBuilder]: Performing block encoding [2025-03-13 21:32:23,574 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-13 21:32:23,576 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 13.03 09:32:23 BoogieIcfgContainer [2025-03-13 21:32:23,576 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-13 21:32:23,578 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-13 21:32:23,578 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-13 21:32:23,581 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-13 21:32:23,581 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.03 09:32:22" (1/3) ... [2025-03-13 21:32:23,582 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ca6cb54 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.03 09:32:23, skipping insertion in model container [2025-03-13 21:32:23,582 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:32:22" (2/3) ... [2025-03-13 21:32:23,582 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ca6cb54 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.03 09:32:23, skipping insertion in model container [2025-03-13 21:32:23,583 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 13.03 09:32:23" (3/3) ... [2025-03-13 21:32:23,584 INFO L128 eAbstractionObserver]: Analyzing ICFG mix046.opt.i [2025-03-13 21:32:23,595 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-13 21:32:23,597 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG mix046.opt.i that has 5 procedures, 50 locations, 1 initial locations, 0 loop locations, and 2 error locations. [2025-03-13 21:32:23,598 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-13 21:32:23,643 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-03-13 21:32:23,672 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 62 places, 50 transitions, 116 flow [2025-03-13 21:32:23,702 INFO L124 PetriNetUnfolderBase]: 1/46 cut-off events. [2025-03-13 21:32:23,705 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-13 21:32:23,708 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. [2025-03-13 21:32:23,711 INFO L82 GeneralOperation]: Start removeDead. Operand has 62 places, 50 transitions, 116 flow [2025-03-13 21:32:23,713 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 58 places, 46 transitions, 104 flow [2025-03-13 21:32:23,722 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-13 21:32:23,735 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;@46cc33c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-13 21:32:23,736 INFO L334 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2025-03-13 21:32:23,745 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-13 21:32:23,746 INFO L124 PetriNetUnfolderBase]: 0/25 cut-off events. [2025-03-13 21:32:23,746 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-13 21:32:23,746 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-13 21:32:23,747 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-13 21:32:23,747 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting P3Err0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-03-13 21:32:23,751 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-13 21:32:23,752 INFO L85 PathProgramCache]: Analyzing trace with hash -909325538, now seen corresponding path program 1 times [2025-03-13 21:32:23,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-13 21:32:23,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113066823] [2025-03-13 21:32:23,759 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-13 21:32:23,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-13 21:32:23,828 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-03-13 21:32:23,862 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-03-13 21:32:23,862 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-13 21:32:23,863 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-13 21:32:24,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-13 21:32:24,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-13 21:32:24,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113066823] [2025-03-13 21:32:24,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2113066823] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-13 21:32:24,220 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-13 21:32:24,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-03-13 21:32:24,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984730550] [2025-03-13 21:32:24,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-13 21:32:24,227 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-13 21:32:24,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-13 21:32:24,246 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-13 21:32:24,246 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-13 21:32:24,248 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 50 [2025-03-13 21:32:24,251 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) [2025-03-13 21:32:24,251 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-13 21:32:24,251 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 50 [2025-03-13 21:32:24,252 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-13 21:32:27,852 INFO L124 PetriNetUnfolderBase]: 46139/61167 cut-off events. [2025-03-13 21:32:27,853 INFO L125 PetriNetUnfolderBase]: For 236/236 co-relation queries the response was YES. [2025-03-13 21:32:27,968 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. [2025-03-13 21:32:28,320 INFO L140 encePairwiseOnDemand]: 46/50 looper letters, 55 selfloop transitions, 2 changer transitions 2/66 dead transitions. [2025-03-13 21:32:28,321 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 66 transitions, 262 flow [2025-03-13 21:32:28,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-13 21:32:28,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-13 21:32:28,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 95 transitions. [2025-03-13 21:32:28,331 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6333333333333333 [2025-03-13 21:32:28,332 INFO L175 Difference]: Start difference. First operand has 58 places, 46 transitions, 104 flow. Second operand 3 states and 95 transitions. [2025-03-13 21:32:28,333 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 66 transitions, 262 flow [2025-03-13 21:32:28,338 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 66 transitions, 258 flow, removed 0 selfloop flow, removed 4 redundant places. [2025-03-13 21:32:28,340 INFO L231 Difference]: Finished difference. Result has 55 places, 43 transitions, 98 flow [2025-03-13 21:32:28,342 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} [2025-03-13 21:32:28,346 INFO L279 CegarLoopForPetriNet]: 58 programPoint places, -3 predicate places. [2025-03-13 21:32:28,346 INFO L471 AbstractCegarLoop]: Abstraction has has 55 places, 43 transitions, 98 flow [2025-03-13 21:32:28,347 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) [2025-03-13 21:32:28,347 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-13 21:32:28,347 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-13 21:32:28,348 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-13 21:32:28,348 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)] === [2025-03-13 21:32:28,348 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-13 21:32:28,348 INFO L85 PathProgramCache]: Analyzing trace with hash -295297183, now seen corresponding path program 1 times [2025-03-13 21:32:28,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-13 21:32:28,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064937380] [2025-03-13 21:32:28,349 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-13 21:32:28,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-13 21:32:28,364 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-03-13 21:32:28,418 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-03-13 21:32:28,419 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-13 21:32:28,420 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-13 21:32:28,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-13 21:32:28,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-13 21:32:28,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1064937380] [2025-03-13 21:32:28,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1064937380] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-13 21:32:28,989 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-13 21:32:28,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-13 21:32:28,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288270940] [2025-03-13 21:32:28,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-13 21:32:28,991 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-13 21:32:28,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-13 21:32:28,991 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-13 21:32:28,992 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-03-13 21:32:28,996 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 50 [2025-03-13 21:32:28,997 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) [2025-03-13 21:32:28,997 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-13 21:32:28,997 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 50 [2025-03-13 21:32:28,997 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-13 21:32:34,881 INFO L124 PetriNetUnfolderBase]: 85667/114087 cut-off events. [2025-03-13 21:32:34,881 INFO L125 PetriNetUnfolderBase]: For 1728/1728 co-relation queries the response was YES. [2025-03-13 21:32:35,117 INFO L83 FinitePrefix]: Finished finitePrefix Result has 229305 conditions, 114087 events. 85667/114087 cut-off events. For 1728/1728 co-relation queries the response was YES. Maximal size of possible extension queue 2988. Compared 700392 event pairs, 13415 based on Foata normal form. 0/112251 useless extension candidates. Maximal degree in co-relation 229295. Up to 41617 conditions per place. [2025-03-13 21:32:35,348 INFO L140 encePairwiseOnDemand]: 37/50 looper letters, 70 selfloop transitions, 9 changer transitions 154/238 dead transitions. [2025-03-13 21:32:35,349 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 238 transitions, 958 flow [2025-03-13 21:32:35,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-03-13 21:32:35,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2025-03-13 21:32:35,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 344 transitions. [2025-03-13 21:32:35,353 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5733333333333334 [2025-03-13 21:32:35,353 INFO L175 Difference]: Start difference. First operand has 55 places, 43 transitions, 98 flow. Second operand 12 states and 344 transitions. [2025-03-13 21:32:35,353 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 238 transitions, 958 flow [2025-03-13 21:32:35,368 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 238 transitions, 950 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-13 21:32:35,372 INFO L231 Difference]: Finished difference. Result has 74 places, 49 transitions, 208 flow [2025-03-13 21:32:35,373 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=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=208, PETRI_PLACES=74, PETRI_TRANSITIONS=49} [2025-03-13 21:32:35,373 INFO L279 CegarLoopForPetriNet]: 58 programPoint places, 16 predicate places. [2025-03-13 21:32:35,373 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 49 transitions, 208 flow [2025-03-13 21:32:35,374 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) [2025-03-13 21:32:35,374 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-13 21:32:35,374 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] [2025-03-13 21:32:35,374 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-13 21:32:35,374 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)] === [2025-03-13 21:32:35,375 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-13 21:32:35,376 INFO L85 PathProgramCache]: Analyzing trace with hash -1596789858, now seen corresponding path program 1 times [2025-03-13 21:32:35,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-13 21:32:35,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006989061] [2025-03-13 21:32:35,376 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-13 21:32:35,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-13 21:32:35,385 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-03-13 21:32:35,400 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-03-13 21:32:35,401 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-13 21:32:35,401 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-13 21:32:35,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-13 21:32:35,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-13 21:32:35,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006989061] [2025-03-13 21:32:35,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2006989061] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-13 21:32:35,756 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-13 21:32:35,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-13 21:32:35,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173363445] [2025-03-13 21:32:35,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-13 21:32:35,756 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-13 21:32:35,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-13 21:32:35,757 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-13 21:32:35,757 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-03-13 21:32:35,759 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 50 [2025-03-13 21:32:35,760 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 49 transitions, 208 flow. Second operand has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-13 21:32:35,760 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-13 21:32:35,760 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 50 [2025-03-13 21:32:35,760 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-13 21:32:41,753 INFO L124 PetriNetUnfolderBase]: 72167/96839 cut-off events. [2025-03-13 21:32:41,754 INFO L125 PetriNetUnfolderBase]: For 143469/143469 co-relation queries the response was YES. [2025-03-13 21:32:42,156 INFO L83 FinitePrefix]: Finished finitePrefix Result has 285272 conditions, 96839 events. 72167/96839 cut-off events. For 143469/143469 co-relation queries the response was YES. Maximal size of possible extension queue 2380. Compared 601460 event pairs, 7327 based on Foata normal form. 1792/98624 useless extension candidates. Maximal degree in co-relation 285251. Up to 55533 conditions per place. [2025-03-13 21:32:42,451 INFO L140 encePairwiseOnDemand]: 37/50 looper letters, 78 selfloop transitions, 18 changer transitions 100/201 dead transitions. [2025-03-13 21:32:42,452 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 201 transitions, 1226 flow [2025-03-13 21:32:42,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-13 21:32:42,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-03-13 21:32:42,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 283 transitions. [2025-03-13 21:32:42,454 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.566 [2025-03-13 21:32:42,454 INFO L175 Difference]: Start difference. First operand has 74 places, 49 transitions, 208 flow. Second operand 10 states and 283 transitions. [2025-03-13 21:32:42,454 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 201 transitions, 1226 flow [2025-03-13 21:32:45,155 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 201 transitions, 1130 flow, removed 46 selfloop flow, removed 5 redundant places. [2025-03-13 21:32:45,157 INFO L231 Difference]: Finished difference. Result has 77 places, 58 transitions, 325 flow [2025-03-13 21:32:45,157 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=186, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=325, PETRI_PLACES=77, PETRI_TRANSITIONS=58} [2025-03-13 21:32:45,158 INFO L279 CegarLoopForPetriNet]: 58 programPoint places, 19 predicate places. [2025-03-13 21:32:45,158 INFO L471 AbstractCegarLoop]: Abstraction has has 77 places, 58 transitions, 325 flow [2025-03-13 21:32:45,158 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-13 21:32:45,158 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-13 21:32:45,158 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] [2025-03-13 21:32:45,158 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-13 21:32:45,158 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)] === [2025-03-13 21:32:45,161 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-13 21:32:45,161 INFO L85 PathProgramCache]: Analyzing trace with hash -273275001, now seen corresponding path program 1 times [2025-03-13 21:32:45,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-13 21:32:45,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728820691] [2025-03-13 21:32:45,162 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-13 21:32:45,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-13 21:32:45,172 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-03-13 21:32:45,213 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-03-13 21:32:45,216 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-13 21:32:45,216 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-13 21:32:46,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-13 21:32:46,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-13 21:32:46,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [728820691] [2025-03-13 21:32:46,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [728820691] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-13 21:32:46,044 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-13 21:32:46,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-13 21:32:46,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225336947] [2025-03-13 21:32:46,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-13 21:32:46,044 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-13 21:32:46,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-13 21:32:46,045 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-13 21:32:46,045 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-03-13 21:32:46,047 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 50 [2025-03-13 21:32:46,048 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 58 transitions, 325 flow. Second operand has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-13 21:32:46,048 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-13 21:32:46,048 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 50 [2025-03-13 21:32:46,048 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-13 21:32:52,646 INFO L124 PetriNetUnfolderBase]: 76667/103290 cut-off events. [2025-03-13 21:32:52,647 INFO L125 PetriNetUnfolderBase]: For 193497/193497 co-relation queries the response was YES. [2025-03-13 21:32:53,125 INFO L83 FinitePrefix]: Finished finitePrefix Result has 334274 conditions, 103290 events. 76667/103290 cut-off events. For 193497/193497 co-relation queries the response was YES. Maximal size of possible extension queue 2476. Compared 638131 event pairs, 18007 based on Foata normal form. 1620/104895 useless extension candidates. Maximal degree in co-relation 334248. Up to 72985 conditions per place. [2025-03-13 21:32:53,420 INFO L140 encePairwiseOnDemand]: 41/50 looper letters, 123 selfloop transitions, 17 changer transitions 119/264 dead transitions. [2025-03-13 21:32:53,420 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 264 transitions, 2010 flow [2025-03-13 21:32:53,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-03-13 21:32:53,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2025-03-13 21:32:53,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 294 transitions. [2025-03-13 21:32:53,421 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5345454545454545 [2025-03-13 21:32:53,421 INFO L175 Difference]: Start difference. First operand has 77 places, 58 transitions, 325 flow. Second operand 11 states and 294 transitions. [2025-03-13 21:32:53,421 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 264 transitions, 2010 flow [2025-03-13 21:33:00,019 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 264 transitions, 1952 flow, removed 29 selfloop flow, removed 8 redundant places. [2025-03-13 21:33:00,021 INFO L231 Difference]: Finished difference. Result has 82 places, 74 transitions, 521 flow [2025-03-13 21:33:00,021 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=305, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=521, PETRI_PLACES=82, PETRI_TRANSITIONS=74} [2025-03-13 21:33:00,021 INFO L279 CegarLoopForPetriNet]: 58 programPoint places, 24 predicate places. [2025-03-13 21:33:00,021 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 74 transitions, 521 flow [2025-03-13 21:33:00,022 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-13 21:33:00,022 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-13 21:33:00,022 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] [2025-03-13 21:33:00,022 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-13 21:33:00,022 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)] === [2025-03-13 21:33:00,022 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-13 21:33:00,022 INFO L85 PathProgramCache]: Analyzing trace with hash -135253211, now seen corresponding path program 2 times [2025-03-13 21:33:00,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-13 21:33:00,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320916054] [2025-03-13 21:33:00,022 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-13 21:33:00,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-13 21:33:00,029 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 22 statements into 1 equivalence classes. [2025-03-13 21:33:00,042 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-03-13 21:33:00,043 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-13 21:33:00,044 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-13 21:33:00,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-13 21:33:00,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-13 21:33:00,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320916054] [2025-03-13 21:33:00,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [320916054] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-13 21:33:00,691 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-13 21:33:00,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-13 21:33:00,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456661300] [2025-03-13 21:33:00,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-13 21:33:00,691 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-13 21:33:00,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-13 21:33:00,692 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-13 21:33:00,692 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2025-03-13 21:33:00,695 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 50 [2025-03-13 21:33:00,695 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 74 transitions, 521 flow. Second operand has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-13 21:33:00,695 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-13 21:33:00,695 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 50 [2025-03-13 21:33:00,695 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand