./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-wmm/mix014_tso.oepc.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e2fb8bed 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/mix014_tso.oepc.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 4fc83f7400faec1e297c0070148ef6e08fc24a46b81d9a9e52a0ee501a0da326 --- Real Ultimate output --- This is Ultimate 0.3.0-?-e2fb8be-m [2025-03-08 17:16:41,953 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-08 17:16:42,007 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-08 17:16:42,012 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-08 17:16:42,012 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-08 17:16:42,034 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-08 17:16:42,035 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-08 17:16:42,035 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-08 17:16:42,036 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-08 17:16:42,036 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-08 17:16:42,036 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-08 17:16:42,036 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-08 17:16:42,036 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-08 17:16:42,037 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-08 17:16:42,037 INFO L153 SettingsManager]: * Use SBE=true [2025-03-08 17:16:42,037 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-08 17:16:42,037 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-08 17:16:42,037 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-08 17:16:42,037 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-08 17:16:42,038 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-08 17:16:42,038 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-08 17:16:42,038 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-08 17:16:42,038 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-08 17:16:42,038 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-08 17:16:42,038 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-08 17:16:42,038 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-08 17:16:42,038 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-08 17:16:42,039 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-08 17:16:42,039 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-08 17:16:42,039 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-08 17:16:42,039 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-08 17:16:42,039 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-08 17:16:42,039 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 17:16:42,039 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-08 17:16:42,039 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-08 17:16:42,040 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-08 17:16:42,040 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-08 17:16:42,040 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-08 17:16:42,040 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-08 17:16:42,040 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-08 17:16:42,040 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-08 17:16:42,040 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-08 17:16:42,040 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-08 17:16:42,040 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 -> 4fc83f7400faec1e297c0070148ef6e08fc24a46b81d9a9e52a0ee501a0da326 [2025-03-08 17:16:42,259 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-08 17:16:42,266 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-08 17:16:42,269 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-08 17:16:42,270 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-08 17:16:42,270 INFO L274 PluginConnector]: CDTParser initialized [2025-03-08 17:16:42,272 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/mix014_tso.oepc.i [2025-03-08 17:16:43,389 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/02b5724ed/aa24f4e27e014a899bb25eb6ee88b277/FLAG33c9c8f49 [2025-03-08 17:16:43,651 INFO L384 CDTParser]: Found 1 translation units. [2025-03-08 17:16:43,651 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/mix014_tso.oepc.i [2025-03-08 17:16:43,666 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/02b5724ed/aa24f4e27e014a899bb25eb6ee88b277/FLAG33c9c8f49 [2025-03-08 17:16:43,680 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/02b5724ed/aa24f4e27e014a899bb25eb6ee88b277 [2025-03-08 17:16:43,682 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-08 17:16:43,683 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-08 17:16:43,689 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-08 17:16:43,689 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-08 17:16:43,694 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-08 17:16:43,695 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 05:16:43" (1/1) ... [2025-03-08 17:16:43,697 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44a66a11 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:16:43, skipping insertion in model container [2025-03-08 17:16:43,697 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 05:16:43" (1/1) ... [2025-03-08 17:16:43,730 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-08 17:16:43,861 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/mix014_tso.oepc.i[949,962] [2025-03-08 17:16:44,038 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 17:16:44,049 INFO L200 MainTranslator]: Completed pre-run [2025-03-08 17:16:44,056 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/mix014_tso.oepc.i[949,962] [2025-03-08 17:16:44,101 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 17:16:44,127 INFO L204 MainTranslator]: Completed translation [2025-03-08 17:16:44,128 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:16:44 WrapperNode [2025-03-08 17:16:44,128 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-08 17:16:44,129 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-08 17:16:44,129 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-08 17:16:44,129 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-08 17:16:44,134 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:16:44" (1/1) ... [2025-03-08 17:16:44,144 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:16:44" (1/1) ... [2025-03-08 17:16:44,169 INFO L138 Inliner]: procedures = 176, calls = 56, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 252 [2025-03-08 17:16:44,170 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-08 17:16:44,170 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-08 17:16:44,170 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-08 17:16:44,170 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-08 17:16:44,177 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:16:44" (1/1) ... [2025-03-08 17:16:44,177 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:16:44" (1/1) ... [2025-03-08 17:16:44,180 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:16:44" (1/1) ... [2025-03-08 17:16:44,194 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]. [2025-03-08 17:16:44,195 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:16:44" (1/1) ... [2025-03-08 17:16:44,195 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:16:44" (1/1) ... [2025-03-08 17:16:44,212 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:16:44" (1/1) ... [2025-03-08 17:16:44,213 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:16:44" (1/1) ... [2025-03-08 17:16:44,219 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:16:44" (1/1) ... [2025-03-08 17:16:44,221 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:16:44" (1/1) ... [2025-03-08 17:16:44,228 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-08 17:16:44,228 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-08 17:16:44,228 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-08 17:16:44,228 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-08 17:16:44,229 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:16:44" (1/1) ... [2025-03-08 17:16:44,235 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 17:16:44,245 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 17:16:44,260 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) [2025-03-08 17:16:44,266 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 [2025-03-08 17:16:44,282 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-03-08 17:16:44,282 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-08 17:16:44,282 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2025-03-08 17:16:44,282 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2025-03-08 17:16:44,282 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2025-03-08 17:16:44,282 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2025-03-08 17:16:44,282 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2025-03-08 17:16:44,283 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2025-03-08 17:16:44,283 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2025-03-08 17:16:44,283 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2025-03-08 17:16:44,283 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-08 17:16:44,283 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-03-08 17:16:44,283 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-08 17:16:44,283 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-08 17:16:44,284 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-03-08 17:16:44,380 INFO L256 CfgBuilder]: Building ICFG [2025-03-08 17:16:44,382 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-08 17:16:44,805 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-08 17:16:44,806 INFO L307 CfgBuilder]: Performing block encoding [2025-03-08 17:16:45,083 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-08 17:16:45,083 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-08 17:16:45,084 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 05:16:45 BoogieIcfgContainer [2025-03-08 17:16:45,084 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-08 17:16:45,085 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-08 17:16:45,086 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-08 17:16:45,089 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-08 17:16:45,089 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.03 05:16:43" (1/3) ... [2025-03-08 17:16:45,090 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a123073 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 05:16:45, skipping insertion in model container [2025-03-08 17:16:45,090 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:16:44" (2/3) ... [2025-03-08 17:16:45,091 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a123073 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 05:16:45, skipping insertion in model container [2025-03-08 17:16:45,091 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 05:16:45" (3/3) ... [2025-03-08 17:16:45,091 INFO L128 eAbstractionObserver]: Analyzing ICFG mix014_tso.oepc.i [2025-03-08 17:16:45,103 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-08 17:16:45,106 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG mix014_tso.oepc.i that has 5 procedures, 51 locations, 1 initial locations, 0 loop locations, and 3 error locations. [2025-03-08 17:16:45,106 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-08 17:16:45,162 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-03-08 17:16:45,188 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 63 places, 51 transitions, 118 flow [2025-03-08 17:16:45,220 INFO L124 PetriNetUnfolderBase]: 1/47 cut-off events. [2025-03-08 17:16:45,222 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-08 17:16:45,227 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60 conditions, 47 events. 1/47 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 108 event pairs, 0 based on Foata normal form. 0/43 useless extension candidates. Maximal degree in co-relation 51. Up to 2 conditions per place. [2025-03-08 17:16:45,227 INFO L82 GeneralOperation]: Start removeDead. Operand has 63 places, 51 transitions, 118 flow [2025-03-08 17:16:45,232 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 59 places, 47 transitions, 106 flow [2025-03-08 17:16:45,237 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-08 17:16:45,246 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;@3cc7bcce, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-08 17:16:45,246 INFO L334 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2025-03-08 17:16:45,252 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-08 17:16:45,252 INFO L124 PetriNetUnfolderBase]: 0/10 cut-off events. [2025-03-08 17:16:45,253 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-08 17:16:45,253 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 17:16:45,253 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2025-03-08 17:16:45,254 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting P1Err0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2025-03-08 17:16:45,258 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:16:45,258 INFO L85 PathProgramCache]: Analyzing trace with hash 992690705, now seen corresponding path program 1 times [2025-03-08 17:16:45,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:16:45,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044578148] [2025-03-08 17:16:45,265 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 17:16:45,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:16:45,328 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-03-08 17:16:45,365 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-03-08 17:16:45,369 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 17:16:45,369 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:16:45,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:16:45,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:16:45,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044578148] [2025-03-08 17:16:45,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1044578148] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 17:16:45,655 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 17:16:45,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-03-08 17:16:45,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851033822] [2025-03-08 17:16:45,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 17:16:45,661 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 17:16:45,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:16:45,691 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 17:16:45,692 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 17:16:45,693 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 51 [2025-03-08 17:16:45,695 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 47 transitions, 106 flow. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 17:16:45,695 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 17:16:45,696 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 51 [2025-03-08 17:16:45,696 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-08 17:16:51,846 INFO L124 PetriNetUnfolderBase]: 55649/73449 cut-off events. [2025-03-08 17:16:51,846 INFO L125 PetriNetUnfolderBase]: For 326/326 co-relation queries the response was YES. [2025-03-08 17:16:51,982 INFO L83 FinitePrefix]: Finished finitePrefix Result has 146939 conditions, 73449 events. 55649/73449 cut-off events. For 326/326 co-relation queries the response was YES. Maximal size of possible extension queue 2264. Compared 454155 event pairs, 5861 based on Foata normal form. 2016/72754 useless extension candidates. Maximal degree in co-relation 146927. Up to 64477 conditions per place. [2025-03-08 17:16:52,254 INFO L140 encePairwiseOnDemand]: 47/51 looper letters, 64 selfloop transitions, 2 changer transitions 0/73 dead transitions. [2025-03-08 17:16:52,255 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 73 transitions, 296 flow [2025-03-08 17:16:52,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 17:16:52,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-08 17:16:52,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 102 transitions. [2025-03-08 17:16:52,268 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2025-03-08 17:16:52,270 INFO L175 Difference]: Start difference. First operand has 59 places, 47 transitions, 106 flow. Second operand 3 states and 102 transitions. [2025-03-08 17:16:52,270 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 73 transitions, 296 flow [2025-03-08 17:16:52,278 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 73 transitions, 290 flow, removed 0 selfloop flow, removed 4 redundant places. [2025-03-08 17:16:52,281 INFO L231 Difference]: Finished difference. Result has 56 places, 45 transitions, 102 flow [2025-03-08 17:16:52,284 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=102, PETRI_PLACES=56, PETRI_TRANSITIONS=45} [2025-03-08 17:16:52,289 INFO L279 CegarLoopForPetriNet]: 59 programPoint places, -3 predicate places. [2025-03-08 17:16:52,289 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 45 transitions, 102 flow [2025-03-08 17:16:52,290 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 17:16:52,290 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 17:16:52,290 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 17:16:52,290 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-08 17:16:52,290 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting P2Err0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2025-03-08 17:16:52,291 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:16:52,291 INFO L85 PathProgramCache]: Analyzing trace with hash 491763290, now seen corresponding path program 1 times [2025-03-08 17:16:52,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:16:52,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648487475] [2025-03-08 17:16:52,291 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 17:16:52,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:16:52,305 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-03-08 17:16:52,320 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-03-08 17:16:52,322 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 17:16:52,323 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:16:52,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:16:52,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:16:52,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1648487475] [2025-03-08 17:16:52,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1648487475] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 17:16:52,474 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 17:16:52,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-03-08 17:16:52,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073201927] [2025-03-08 17:16:52,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 17:16:52,475 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 17:16:52,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:16:52,475 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 17:16:52,475 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 17:16:52,475 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 51 [2025-03-08 17:16:52,476 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 45 transitions, 102 flow. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 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) [2025-03-08 17:16:52,476 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 17:16:52,476 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 51 [2025-03-08 17:16:52,476 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-08 17:16:57,643 INFO L124 PetriNetUnfolderBase]: 47373/62745 cut-off events. [2025-03-08 17:16:57,643 INFO L125 PetriNetUnfolderBase]: For 2100/2100 co-relation queries the response was YES. [2025-03-08 17:16:57,788 INFO L83 FinitePrefix]: Finished finitePrefix Result has 127537 conditions, 62745 events. 47373/62745 cut-off events. For 2100/2100 co-relation queries the response was YES. Maximal size of possible extension queue 1850. Compared 372353 event pairs, 5993 based on Foata normal form. 0/62452 useless extension candidates. Maximal degree in co-relation 127527. Up to 53561 conditions per place. [2025-03-08 17:16:57,989 INFO L140 encePairwiseOnDemand]: 48/51 looper letters, 59 selfloop transitions, 2 changer transitions 2/70 dead transitions. [2025-03-08 17:16:57,989 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 70 transitions, 282 flow [2025-03-08 17:16:57,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 17:16:57,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-08 17:16:57,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 97 transitions. [2025-03-08 17:16:57,992 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6339869281045751 [2025-03-08 17:16:57,992 INFO L175 Difference]: Start difference. First operand has 56 places, 45 transitions, 102 flow. Second operand 3 states and 97 transitions. [2025-03-08 17:16:57,992 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 70 transitions, 282 flow [2025-03-08 17:16:57,994 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 70 transitions, 276 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-08 17:16:57,995 INFO L231 Difference]: Finished difference. Result has 55 places, 43 transitions, 98 flow [2025-03-08 17:16:57,995 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=98, PETRI_PLACES=55, PETRI_TRANSITIONS=43} [2025-03-08 17:16:57,997 INFO L279 CegarLoopForPetriNet]: 59 programPoint places, -4 predicate places. [2025-03-08 17:16:57,997 INFO L471 AbstractCegarLoop]: Abstraction has has 55 places, 43 transitions, 98 flow [2025-03-08 17:16:57,997 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 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) [2025-03-08 17:16:57,997 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 17:16:57,997 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 17:16:57,997 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-08 17:16:57,998 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2025-03-08 17:16:57,999 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:16:58,000 INFO L85 PathProgramCache]: Analyzing trace with hash 416449858, now seen corresponding path program 1 times [2025-03-08 17:16:58,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:16:58,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532156271] [2025-03-08 17:16:58,001 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 17:16:58,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:16:58,016 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-03-08 17:16:58,095 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-03-08 17:16:58,095 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 17:16:58,095 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:16:58,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:16:58,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:16:58,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532156271] [2025-03-08 17:16:58,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [532156271] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 17:16:58,268 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 17:16:58,268 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-08 17:16:58,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445143554] [2025-03-08 17:16:58,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 17:16:58,268 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-08 17:16:58,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:16:58,268 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-08 17:16:58,268 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-08 17:16:58,268 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 51 [2025-03-08 17:16:58,269 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 43 transitions, 98 flow. Second operand has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 17:16:58,269 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 17:16:58,269 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 51 [2025-03-08 17:16:58,269 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-08 17:17:02,282 INFO L124 PetriNetUnfolderBase]: 38009/54855 cut-off events. [2025-03-08 17:17:02,283 INFO L125 PetriNetUnfolderBase]: For 1936/1936 co-relation queries the response was YES. [2025-03-08 17:17:02,410 INFO L83 FinitePrefix]: Finished finitePrefix Result has 108119 conditions, 54855 events. 38009/54855 cut-off events. For 1936/1936 co-relation queries the response was YES. Maximal size of possible extension queue 1784. Compared 378452 event pairs, 5331 based on Foata normal form. 1764/55203 useless extension candidates. Maximal degree in co-relation 108109. Up to 28641 conditions per place. [2025-03-08 17:17:02,562 INFO L140 encePairwiseOnDemand]: 44/51 looper letters, 77 selfloop transitions, 6 changer transitions 1/91 dead transitions. [2025-03-08 17:17:02,562 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 91 transitions, 372 flow [2025-03-08 17:17:02,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-08 17:17:02,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-08 17:17:02,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 130 transitions. [2025-03-08 17:17:02,563 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6372549019607843 [2025-03-08 17:17:02,563 INFO L175 Difference]: Start difference. First operand has 55 places, 43 transitions, 98 flow. Second operand 4 states and 130 transitions. [2025-03-08 17:17:02,563 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 91 transitions, 372 flow [2025-03-08 17:17:02,566 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 91 transitions, 364 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-08 17:17:02,567 INFO L231 Difference]: Finished difference. Result has 57 places, 47 transitions, 136 flow [2025-03-08 17:17:02,567 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=136, PETRI_PLACES=57, PETRI_TRANSITIONS=47} [2025-03-08 17:17:02,568 INFO L279 CegarLoopForPetriNet]: 59 programPoint places, -2 predicate places. [2025-03-08 17:17:02,568 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 47 transitions, 136 flow [2025-03-08 17:17:02,568 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 17:17:02,568 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 17:17:02,568 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 17:17:02,568 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-08 17:17:02,568 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2025-03-08 17:17:02,569 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:17:02,569 INFO L85 PathProgramCache]: Analyzing trace with hash 1425882842, now seen corresponding path program 1 times [2025-03-08 17:17:02,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:17:02,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125270132] [2025-03-08 17:17:02,569 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 17:17:02,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:17:02,578 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-03-08 17:17:02,630 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-03-08 17:17:02,630 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 17:17:02,632 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:17:02,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:17:02,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:17:02,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125270132] [2025-03-08 17:17:02,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [125270132] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 17:17:02,823 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 17:17:02,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-08 17:17:02,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266157043] [2025-03-08 17:17:02,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 17:17:02,823 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-08 17:17:02,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:17:02,824 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-08 17:17:02,824 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-08 17:17:02,824 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 51 [2025-03-08 17:17:02,824 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 47 transitions, 136 flow. Second operand has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 17:17:02,824 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 17:17:02,824 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 51 [2025-03-08 17:17:02,824 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-08 17:17:05,709 INFO L124 PetriNetUnfolderBase]: 24529/35215 cut-off events. [2025-03-08 17:17:05,709 INFO L125 PetriNetUnfolderBase]: For 6828/6828 co-relation queries the response was YES. [2025-03-08 17:17:05,786 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78357 conditions, 35215 events. 24529/35215 cut-off events. For 6828/6828 co-relation queries the response was YES. Maximal size of possible extension queue 927. Compared 222148 event pairs, 3173 based on Foata normal form. 1364/35883 useless extension candidates. Maximal degree in co-relation 78345. Up to 12441 conditions per place. [2025-03-08 17:17:05,863 INFO L140 encePairwiseOnDemand]: 44/51 looper letters, 100 selfloop transitions, 10 changer transitions 1/118 dead transitions. [2025-03-08 17:17:05,863 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 118 transitions, 529 flow [2025-03-08 17:17:05,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-08 17:17:05,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-08 17:17:05,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 168 transitions. [2025-03-08 17:17:05,865 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6588235294117647 [2025-03-08 17:17:05,865 INFO L175 Difference]: Start difference. First operand has 57 places, 47 transitions, 136 flow. Second operand 5 states and 168 transitions. [2025-03-08 17:17:05,865 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 118 transitions, 529 flow [2025-03-08 17:17:05,871 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 118 transitions, 518 flow, removed 1 selfloop flow, removed 2 redundant places. [2025-03-08 17:17:05,872 INFO L231 Difference]: Finished difference. Result has 61 places, 51 transitions, 188 flow [2025-03-08 17:17:05,872 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=127, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=188, PETRI_PLACES=61, PETRI_TRANSITIONS=51} [2025-03-08 17:17:05,873 INFO L279 CegarLoopForPetriNet]: 59 programPoint places, 2 predicate places. [2025-03-08 17:17:05,873 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 51 transitions, 188 flow [2025-03-08 17:17:05,873 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 17:17:05,873 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 17:17:05,873 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 17:17:05,873 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-08 17:17:05,873 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2025-03-08 17:17:05,874 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:17:05,874 INFO L85 PathProgramCache]: Analyzing trace with hash -1849092880, now seen corresponding path program 1 times [2025-03-08 17:17:05,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:17:05,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133064762] [2025-03-08 17:17:05,874 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 17:17:05,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:17:05,883 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 26 statements into 1 equivalence classes. [2025-03-08 17:17:05,941 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 26 of 26 statements. [2025-03-08 17:17:05,945 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 17:17:05,946 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:17:06,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:17:06,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:17:06,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2133064762] [2025-03-08 17:17:06,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2133064762] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 17:17:06,170 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 17:17:06,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-08 17:17:06,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635901424] [2025-03-08 17:17:06,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 17:17:06,170 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-08 17:17:06,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:17:06,171 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-08 17:17:06,171 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2025-03-08 17:17:06,171 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 51 [2025-03-08 17:17:06,171 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 51 transitions, 188 flow. Second operand has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 17:17:06,171 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 17:17:06,171 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 51 [2025-03-08 17:17:06,171 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-08 17:17:07,697 INFO L124 PetriNetUnfolderBase]: 15233/21327 cut-off events. [2025-03-08 17:17:07,698 INFO L125 PetriNetUnfolderBase]: For 12974/12974 co-relation queries the response was YES. [2025-03-08 17:17:07,724 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52163 conditions, 21327 events. 15233/21327 cut-off events. For 12974/12974 co-relation queries the response was YES. Maximal size of possible extension queue 560. Compared 117618 event pairs, 2783 based on Foata normal form. 644/21759 useless extension candidates. Maximal degree in co-relation 52149. Up to 6412 conditions per place. [2025-03-08 17:17:07,763 INFO L140 encePairwiseOnDemand]: 44/51 looper letters, 121 selfloop transitions, 14 changer transitions 1/143 dead transitions. [2025-03-08 17:17:07,763 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 143 transitions, 692 flow [2025-03-08 17:17:07,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-08 17:17:07,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-08 17:17:07,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 204 transitions. [2025-03-08 17:17:07,765 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2025-03-08 17:17:07,765 INFO L175 Difference]: Start difference. First operand has 61 places, 51 transitions, 188 flow. Second operand 6 states and 204 transitions. [2025-03-08 17:17:07,765 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 143 transitions, 692 flow [2025-03-08 17:17:07,887 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 143 transitions, 662 flow, removed 5 selfloop flow, removed 4 redundant places. [2025-03-08 17:17:07,888 INFO L231 Difference]: Finished difference. Result has 64 places, 55 transitions, 238 flow [2025-03-08 17:17:07,888 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=161, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=238, PETRI_PLACES=64, PETRI_TRANSITIONS=55} [2025-03-08 17:17:07,889 INFO L279 CegarLoopForPetriNet]: 59 programPoint places, 5 predicate places. [2025-03-08 17:17:07,889 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 55 transitions, 238 flow [2025-03-08 17:17:07,889 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 17:17:07,889 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 17:17:07,889 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 17:17:07,889 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-08 17:17:07,889 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2025-03-08 17:17:07,890 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:17:07,890 INFO L85 PathProgramCache]: Analyzing trace with hash -1877388074, now seen corresponding path program 1 times [2025-03-08 17:17:07,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:17:07,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156349522] [2025-03-08 17:17:07,890 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 17:17:07,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:17:07,903 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 32 statements into 1 equivalence classes. [2025-03-08 17:17:08,063 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 32 of 32 statements. [2025-03-08 17:17:08,063 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 17:17:08,063 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:17:08,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:17:08,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:17:08,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [156349522] [2025-03-08 17:17:08,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [156349522] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 17:17:08,358 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 17:17:08,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-08 17:17:08,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863431476] [2025-03-08 17:17:08,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 17:17:08,358 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-08 17:17:08,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:17:08,359 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-08 17:17:08,359 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2025-03-08 17:17:08,359 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 51 [2025-03-08 17:17:08,359 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 55 transitions, 238 flow. Second operand has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 7 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 17:17:08,359 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 17:17:08,359 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 51 [2025-03-08 17:17:08,359 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-08 17:17:09,490 INFO L124 PetriNetUnfolderBase]: 12125/16583 cut-off events. [2025-03-08 17:17:09,490 INFO L125 PetriNetUnfolderBase]: For 12154/12154 co-relation queries the response was YES. [2025-03-08 17:17:09,542 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41980 conditions, 16583 events. 12125/16583 cut-off events. For 12154/12154 co-relation queries the response was YES. Maximal size of possible extension queue 532. Compared 86577 event pairs, 2589 based on Foata normal form. 160/16675 useless extension candidates. Maximal degree in co-relation 41965. Up to 6412 conditions per place. [2025-03-08 17:17:09,591 INFO L140 encePairwiseOnDemand]: 44/51 looper letters, 104 selfloop transitions, 18 changer transitions 1/130 dead transitions. [2025-03-08 17:17:09,591 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 130 transitions, 650 flow [2025-03-08 17:17:09,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-08 17:17:09,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-03-08 17:17:09,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 202 transitions. [2025-03-08 17:17:09,592 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5658263305322129 [2025-03-08 17:17:09,592 INFO L175 Difference]: Start difference. First operand has 64 places, 55 transitions, 238 flow. Second operand 7 states and 202 transitions. [2025-03-08 17:17:09,592 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 130 transitions, 650 flow [2025-03-08 17:17:09,800 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 130 transitions, 604 flow, removed 9 selfloop flow, removed 5 redundant places. [2025-03-08 17:17:09,802 INFO L231 Difference]: Finished difference. Result has 67 places, 55 transitions, 248 flow [2025-03-08 17:17:09,802 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=195, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=248, PETRI_PLACES=67, PETRI_TRANSITIONS=55} [2025-03-08 17:17:09,802 INFO L279 CegarLoopForPetriNet]: 59 programPoint places, 8 predicate places. [2025-03-08 17:17:09,802 INFO L471 AbstractCegarLoop]: Abstraction has has 67 places, 55 transitions, 248 flow [2025-03-08 17:17:09,803 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 7 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 17:17:09,803 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 17:17:09,803 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 17:17:09,803 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-08 17:17:09,803 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2025-03-08 17:17:09,803 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:17:09,803 INFO L85 PathProgramCache]: Analyzing trace with hash -242871813, now seen corresponding path program 1 times [2025-03-08 17:17:09,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:17:09,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934785605] [2025-03-08 17:17:09,803 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 17:17:09,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:17:09,816 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 38 statements into 1 equivalence classes. [2025-03-08 17:17:09,943 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 38 of 38 statements. [2025-03-08 17:17:09,944 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 17:17:09,944 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:17:10,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:17:10,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:17:10,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934785605] [2025-03-08 17:17:10,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [934785605] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 17:17:10,318 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 17:17:10,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-08 17:17:10,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557051051] [2025-03-08 17:17:10,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 17:17:10,319 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-08 17:17:10,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:17:10,319 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-08 17:17:10,319 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-08 17:17:10,324 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 51 [2025-03-08 17:17:10,325 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 55 transitions, 248 flow. Second operand has 6 states, 6 states have (on average 15.5) internal successors, (93), 6 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 17:17:10,325 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 17:17:10,325 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 51 [2025-03-08 17:17:10,325 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-08 17:17:11,826 INFO L124 PetriNetUnfolderBase]: 16545/22590 cut-off events. [2025-03-08 17:17:11,826 INFO L125 PetriNetUnfolderBase]: For 16768/16768 co-relation queries the response was YES. [2025-03-08 17:17:11,881 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57396 conditions, 22590 events. 16545/22590 cut-off events. For 16768/16768 co-relation queries the response was YES. Maximal size of possible extension queue 748. Compared 123924 event pairs, 2223 based on Foata normal form. 16/22592 useless extension candidates. Maximal degree in co-relation 57380. Up to 13538 conditions per place. [2025-03-08 17:17:11,916 INFO L140 encePairwiseOnDemand]: 46/51 looper letters, 69 selfloop transitions, 1 changer transitions 53/129 dead transitions. [2025-03-08 17:17:11,916 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 129 transitions, 828 flow [2025-03-08 17:17:11,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-08 17:17:11,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-08 17:17:11,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 154 transitions. [2025-03-08 17:17:11,917 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5032679738562091 [2025-03-08 17:17:11,917 INFO L175 Difference]: Start difference. First operand has 67 places, 55 transitions, 248 flow. Second operand 6 states and 154 transitions. [2025-03-08 17:17:11,918 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 129 transitions, 828 flow [2025-03-08 17:17:12,177 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 129 transitions, 603 flow, removed 34 selfloop flow, removed 10 redundant places. [2025-03-08 17:17:12,178 INFO L231 Difference]: Finished difference. Result has 66 places, 55 transitions, 163 flow [2025-03-08 17:17:12,178 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=163, PETRI_PLACES=66, PETRI_TRANSITIONS=55} [2025-03-08 17:17:12,179 INFO L279 CegarLoopForPetriNet]: 59 programPoint places, 7 predicate places. [2025-03-08 17:17:12,179 INFO L471 AbstractCegarLoop]: Abstraction has has 66 places, 55 transitions, 163 flow [2025-03-08 17:17:12,179 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.5) internal successors, (93), 6 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 17:17:12,179 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 17:17:12,179 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 17:17:12,179 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-08 17:17:12,179 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2025-03-08 17:17:12,180 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:17:12,180 INFO L85 PathProgramCache]: Analyzing trace with hash 1779449357, now seen corresponding path program 2 times [2025-03-08 17:17:12,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:17:12,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624024642] [2025-03-08 17:17:12,180 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-08 17:17:12,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:17:12,193 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 38 statements into 1 equivalence classes. [2025-03-08 17:17:12,382 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 38 of 38 statements. [2025-03-08 17:17:12,382 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-08 17:17:12,382 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:17:12,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:17:12,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:17:12,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [624024642] [2025-03-08 17:17:12,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [624024642] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 17:17:12,650 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 17:17:12,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-08 17:17:12,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788242790] [2025-03-08 17:17:12,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 17:17:12,652 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-08 17:17:12,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:17:12,652 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-08 17:17:12,652 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-08 17:17:12,658 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 51 [2025-03-08 17:17:12,659 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 55 transitions, 163 flow. Second operand has 6 states, 6 states have (on average 15.5) internal successors, (93), 6 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 17:17:12,659 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 17:17:12,659 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 51 [2025-03-08 17:17:12,659 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand