./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-wmm/safe019_power.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 48c9605d Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/pthread-wmm/safe019_power.opt.i -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/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 57c8b47d74ada5c94291d16aafebbb644062493fff61510a323122bcd88ba5b1 --- Real Ultimate output --- This is Ultimate 0.3.0-?-48c9605-m [2025-02-08 01:05:07,107 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-08 01:05:07,142 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-02-08 01:05:07,146 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-08 01:05:07,146 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-08 01:05:07,160 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-08 01:05:07,161 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-08 01:05:07,161 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-08 01:05:07,161 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-08 01:05:07,161 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-08 01:05:07,161 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-08 01:05:07,161 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-08 01:05:07,162 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-08 01:05:07,162 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-08 01:05:07,162 INFO L153 SettingsManager]: * Use SBE=true [2025-02-08 01:05:07,162 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-08 01:05:07,162 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-08 01:05:07,162 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-08 01:05:07,162 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-08 01:05:07,162 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-08 01:05:07,162 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-08 01:05:07,162 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-08 01:05:07,162 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-08 01:05:07,162 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-08 01:05:07,162 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-08 01:05:07,162 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-08 01:05:07,162 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-08 01:05:07,162 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-08 01:05:07,163 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-08 01:05:07,163 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-08 01:05:07,163 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-08 01:05:07,163 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-08 01:05:07,163 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 01:05:07,163 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-08 01:05:07,163 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-08 01:05:07,163 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-08 01:05:07,163 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-08 01:05:07,163 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-08 01:05:07,163 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-08 01:05:07,163 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-08 01:05:07,163 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-08 01:05:07,163 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-08 01:05:07,163 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-08 01:05:07,163 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-jdk21/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 -> 57c8b47d74ada5c94291d16aafebbb644062493fff61510a323122bcd88ba5b1 [2025-02-08 01:05:07,392 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-08 01:05:07,398 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-08 01:05:07,400 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-08 01:05:07,400 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-08 01:05:07,401 INFO L274 PluginConnector]: CDTParser initialized [2025-02-08 01:05:07,402 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/safe019_power.opt.i [2025-02-08 01:05:08,618 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/27414d00e/9aa4297a48da4316819bb5f7de55e705/FLAGd70d97eb8 [2025-02-08 01:05:08,945 INFO L384 CDTParser]: Found 1 translation units. [2025-02-08 01:05:08,946 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe019_power.opt.i [2025-02-08 01:05:08,958 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/27414d00e/9aa4297a48da4316819bb5f7de55e705/FLAGd70d97eb8 [2025-02-08 01:05:08,978 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/27414d00e/9aa4297a48da4316819bb5f7de55e705 [2025-02-08 01:05:08,980 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-08 01:05:08,981 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-08 01:05:08,983 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-08 01:05:08,983 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-08 01:05:08,985 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-08 01:05:08,986 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 01:05:08" (1/1) ... [2025-02-08 01:05:08,986 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d01870e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:05:08, skipping insertion in model container [2025-02-08 01:05:08,987 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 01:05:08" (1/1) ... [2025-02-08 01:05:09,016 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-08 01:05:09,144 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe019_power.opt.i[994,1007] [2025-02-08 01:05:09,282 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 01:05:09,290 INFO L200 MainTranslator]: Completed pre-run [2025-02-08 01:05:09,300 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe019_power.opt.i[994,1007] [2025-02-08 01:05:09,345 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 01:05:09,370 INFO L204 MainTranslator]: Completed translation [2025-02-08 01:05:09,370 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:05:09 WrapperNode [2025-02-08 01:05:09,370 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-08 01:05:09,371 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-08 01:05:09,371 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-08 01:05:09,371 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-08 01:05:09,376 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:05:09" (1/1) ... [2025-02-08 01:05:09,386 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:05:09" (1/1) ... [2025-02-08 01:05:09,401 INFO L138 Inliner]: procedures = 176, calls = 72, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 178 [2025-02-08 01:05:09,402 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-08 01:05:09,402 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-08 01:05:09,402 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-08 01:05:09,403 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-08 01:05:09,408 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:05:09" (1/1) ... [2025-02-08 01:05:09,409 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:05:09" (1/1) ... [2025-02-08 01:05:09,412 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:05:09" (1/1) ... [2025-02-08 01:05:09,425 INFO L175 MemorySlicer]: Split 26 memory accesses to 2 slices as follows [2, 24]. 92 percent of accesses are in the largest equivalence class. The 3 initializations are split as follows [2, 1]. The 8 writes are split as follows [0, 8]. [2025-02-08 01:05:09,426 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:05:09" (1/1) ... [2025-02-08 01:05:09,426 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:05:09" (1/1) ... [2025-02-08 01:05:09,432 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:05:09" (1/1) ... [2025-02-08 01:05:09,433 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:05:09" (1/1) ... [2025-02-08 01:05:09,435 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:05:09" (1/1) ... [2025-02-08 01:05:09,436 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:05:09" (1/1) ... [2025-02-08 01:05:09,438 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-08 01:05:09,439 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-08 01:05:09,439 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-08 01:05:09,439 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-08 01:05:09,440 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:05:09" (1/1) ... [2025-02-08 01:05:09,443 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 01:05:09,452 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 01:05:09,463 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-02-08 01:05:09,468 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-02-08 01:05:09,481 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-02-08 01:05:09,481 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-02-08 01:05:09,481 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-02-08 01:05:09,481 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-02-08 01:05:09,482 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-02-08 01:05:09,482 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-08 01:05:09,482 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2025-02-08 01:05:09,482 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2025-02-08 01:05:09,482 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2025-02-08 01:05:09,482 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2025-02-08 01:05:09,482 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2025-02-08 01:05:09,482 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2025-02-08 01:05:09,482 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2025-02-08 01:05:09,482 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2025-02-08 01:05:09,482 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-08 01:05:09,482 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-02-08 01:05:09,482 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-02-08 01:05:09,483 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-08 01:05:09,483 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-08 01:05:09,484 WARN L227 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-02-08 01:05:09,577 INFO L257 CfgBuilder]: Building ICFG [2025-02-08 01:05:09,579 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-08 01:05:10,003 INFO L304 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-02-08 01:05:10,004 INFO L308 CfgBuilder]: Performing block encoding [2025-02-08 01:05:10,284 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-08 01:05:10,285 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-08 01:05:10,285 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 01:05:10 BoogieIcfgContainer [2025-02-08 01:05:10,285 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-08 01:05:10,287 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-08 01:05:10,287 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-08 01:05:10,290 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-08 01:05:10,290 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.02 01:05:08" (1/3) ... [2025-02-08 01:05:10,291 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a77aa4d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 01:05:10, skipping insertion in model container [2025-02-08 01:05:10,291 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:05:09" (2/3) ... [2025-02-08 01:05:10,291 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a77aa4d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 01:05:10, skipping insertion in model container [2025-02-08 01:05:10,291 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 01:05:10" (3/3) ... [2025-02-08 01:05:10,292 INFO L128 eAbstractionObserver]: Analyzing ICFG safe019_power.opt.i [2025-02-08 01:05:10,303 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-08 01:05:10,304 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG safe019_power.opt.i that has 5 procedures, 46 locations, 1 initial locations, 0 loop locations, and 2 error locations. [2025-02-08 01:05:10,304 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-02-08 01:05:10,363 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-02-08 01:05:10,383 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 58 places, 46 transitions, 108 flow [2025-02-08 01:05:10,409 INFO L124 PetriNetUnfolderBase]: 1/42 cut-off events. [2025-02-08 01:05:10,411 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-08 01:05:10,413 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55 conditions, 42 events. 1/42 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 81 event pairs, 0 based on Foata normal form. 0/39 useless extension candidates. Maximal degree in co-relation 46. Up to 2 conditions per place. [2025-02-08 01:05:10,413 INFO L82 GeneralOperation]: Start removeDead. Operand has 58 places, 46 transitions, 108 flow [2025-02-08 01:05:10,415 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 54 places, 42 transitions, 96 flow [2025-02-08 01:05:10,420 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-08 01:05:10,433 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;@40eabe0a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-08 01:05:10,433 INFO L334 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2025-02-08 01:05:10,438 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-08 01:05:10,438 INFO L124 PetriNetUnfolderBase]: 0/9 cut-off events. [2025-02-08 01:05:10,438 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-08 01:05:10,438 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:05:10,439 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2025-02-08 01:05:10,439 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting P1Err0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-02-08 01:05:10,443 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:05:10,443 INFO L85 PathProgramCache]: Analyzing trace with hash 437793881, now seen corresponding path program 1 times [2025-02-08 01:05:10,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:05:10,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726816354] [2025-02-08 01:05:10,449 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 01:05:10,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:05:10,516 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-08 01:05:10,539 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-08 01:05:10,539 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:05:10,539 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:05:10,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:05:10,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:05:10,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726816354] [2025-02-08 01:05:10,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [726816354] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:05:10,843 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 01:05:10,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-02-08 01:05:10,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22228523] [2025-02-08 01:05:10,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:05:10,850 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 01:05:10,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:05:10,870 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 01:05:10,870 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 01:05:10,871 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2025-02-08 01:05:10,873 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 42 transitions, 96 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) [2025-02-08 01:05:10,873 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:05:10,873 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2025-02-08 01:05:10,874 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:05:14,642 INFO L124 PetriNetUnfolderBase]: 23617/31809 cut-off events. [2025-02-08 01:05:14,642 INFO L125 PetriNetUnfolderBase]: For 201/201 co-relation queries the response was YES. [2025-02-08 01:05:14,714 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63499 conditions, 31809 events. 23617/31809 cut-off events. For 201/201 co-relation queries the response was YES. Maximal size of possible extension queue 1091. Compared 186567 event pairs, 3513 based on Foata normal form. 900/32521 useless extension candidates. Maximal degree in co-relation 63487. Up to 26201 conditions per place. [2025-02-08 01:05:14,842 INFO L140 encePairwiseOnDemand]: 42/46 looper letters, 54 selfloop transitions, 2 changer transitions 2/65 dead transitions. [2025-02-08 01:05:14,843 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 65 transitions, 264 flow [2025-02-08 01:05:14,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-08 01:05:14,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-08 01:05:14,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 94 transitions. [2025-02-08 01:05:14,852 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6811594202898551 [2025-02-08 01:05:14,853 INFO L175 Difference]: Start difference. First operand has 54 places, 42 transitions, 96 flow. Second operand 3 states and 94 transitions. [2025-02-08 01:05:14,854 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 65 transitions, 264 flow [2025-02-08 01:05:14,859 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 65 transitions, 258 flow, removed 0 selfloop flow, removed 4 redundant places. [2025-02-08 01:05:14,861 INFO L231 Difference]: Finished difference. Result has 51 places, 39 transitions, 90 flow [2025-02-08 01:05:14,863 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=90, PETRI_PLACES=51, PETRI_TRANSITIONS=39} [2025-02-08 01:05:14,866 INFO L279 CegarLoopForPetriNet]: 54 programPoint places, -3 predicate places. [2025-02-08 01:05:14,866 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 39 transitions, 90 flow [2025-02-08 01:05:14,867 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) [2025-02-08 01:05:14,867 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:05:14,867 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:05:14,867 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-08 01:05:14,867 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-02-08 01:05:14,868 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:05:14,868 INFO L85 PathProgramCache]: Analyzing trace with hash 134644068, now seen corresponding path program 1 times [2025-02-08 01:05:14,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:05:14,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931022994] [2025-02-08 01:05:14,868 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 01:05:14,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:05:14,887 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-02-08 01:05:14,904 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-02-08 01:05:14,904 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:05:14,904 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:05:15,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:05:15,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:05:15,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931022994] [2025-02-08 01:05:15,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [931022994] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:05:15,145 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 01:05:15,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-08 01:05:15,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24804304] [2025-02-08 01:05:15,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:05:15,146 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 01:05:15,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:05:15,146 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 01:05:15,146 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-08 01:05:15,155 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 46 [2025-02-08 01:05:15,155 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 39 transitions, 90 flow. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:05:15,155 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:05:15,155 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 46 [2025-02-08 01:05:15,156 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:05:19,335 INFO L124 PetriNetUnfolderBase]: 32567/43962 cut-off events. [2025-02-08 01:05:19,336 INFO L125 PetriNetUnfolderBase]: For 2124/2124 co-relation queries the response was YES. [2025-02-08 01:05:19,456 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89724 conditions, 43962 events. 32567/43962 cut-off events. For 2124/2124 co-relation queries the response was YES. Maximal size of possible extension queue 1433. Compared 266539 event pairs, 3582 based on Foata normal form. 0/43205 useless extension candidates. Maximal degree in co-relation 89714. Up to 26651 conditions per place. [2025-02-08 01:05:19,567 INFO L140 encePairwiseOnDemand]: 40/46 looper letters, 54 selfloop transitions, 2 changer transitions 85/146 dead transitions. [2025-02-08 01:05:19,567 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 146 transitions, 604 flow [2025-02-08 01:05:19,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-08 01:05:19,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-02-08 01:05:19,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 215 transitions. [2025-02-08 01:05:19,572 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5842391304347826 [2025-02-08 01:05:19,573 INFO L175 Difference]: Start difference. First operand has 51 places, 39 transitions, 90 flow. Second operand 8 states and 215 transitions. [2025-02-08 01:05:19,573 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 146 transitions, 604 flow [2025-02-08 01:05:19,575 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 146 transitions, 588 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-02-08 01:05:19,580 INFO L231 Difference]: Finished difference. Result has 60 places, 38 transitions, 100 flow [2025-02-08 01:05:19,580 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=100, PETRI_PLACES=60, PETRI_TRANSITIONS=38} [2025-02-08 01:05:19,580 INFO L279 CegarLoopForPetriNet]: 54 programPoint places, 6 predicate places. [2025-02-08 01:05:19,581 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 38 transitions, 100 flow [2025-02-08 01:05:19,582 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:05:19,582 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:05:19,582 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:05:19,582 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-08 01:05:19,583 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-02-08 01:05:19,583 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:05:19,584 INFO L85 PathProgramCache]: Analyzing trace with hash 863464037, now seen corresponding path program 1 times [2025-02-08 01:05:19,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:05:19,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531053200] [2025-02-08 01:05:19,584 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 01:05:19,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:05:19,604 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-02-08 01:05:19,625 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-02-08 01:05:19,625 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:05:19,626 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:05:19,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:05:19,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:05:19,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531053200] [2025-02-08 01:05:19,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [531053200] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:05:19,836 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 01:05:19,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-08 01:05:19,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779557904] [2025-02-08 01:05:19,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:05:19,836 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 01:05:19,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:05:19,837 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 01:05:19,837 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-08 01:05:19,840 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 46 [2025-02-08 01:05:19,840 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 38 transitions, 100 flow. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 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) [2025-02-08 01:05:19,840 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:05:19,840 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 46 [2025-02-08 01:05:19,840 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:05:23,151 INFO L124 PetriNetUnfolderBase]: 25682/34974 cut-off events. [2025-02-08 01:05:23,152 INFO L125 PetriNetUnfolderBase]: For 6022/6022 co-relation queries the response was YES. [2025-02-08 01:05:23,282 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76326 conditions, 34974 events. 25682/34974 cut-off events. For 6022/6022 co-relation queries the response was YES. Maximal size of possible extension queue 1141. Compared 201943 event pairs, 5820 based on Foata normal form. 750/35705 useless extension candidates. Maximal degree in co-relation 76311. Up to 27128 conditions per place. [2025-02-08 01:05:23,371 INFO L140 encePairwiseOnDemand]: 40/46 looper letters, 48 selfloop transitions, 3 changer transitions 59/115 dead transitions. [2025-02-08 01:05:23,372 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 115 transitions, 489 flow [2025-02-08 01:05:23,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-08 01:05:23,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-02-08 01:05:23,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 175 transitions. [2025-02-08 01:05:23,373 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5434782608695652 [2025-02-08 01:05:23,375 INFO L175 Difference]: Start difference. First operand has 60 places, 38 transitions, 100 flow. Second operand 7 states and 175 transitions. [2025-02-08 01:05:23,375 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 115 transitions, 489 flow [2025-02-08 01:05:24,016 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 115 transitions, 467 flow, removed 8 selfloop flow, removed 6 redundant places. [2025-02-08 01:05:24,017 INFO L231 Difference]: Finished difference. Result has 59 places, 40 transitions, 123 flow [2025-02-08 01:05:24,017 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=123, PETRI_PLACES=59, PETRI_TRANSITIONS=40} [2025-02-08 01:05:24,018 INFO L279 CegarLoopForPetriNet]: 54 programPoint places, 5 predicate places. [2025-02-08 01:05:24,018 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 40 transitions, 123 flow [2025-02-08 01:05:24,019 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 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) [2025-02-08 01:05:24,019 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:05:24,019 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] [2025-02-08 01:05:24,019 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-02-08 01:05:24,019 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-02-08 01:05:24,020 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:05:24,020 INFO L85 PathProgramCache]: Analyzing trace with hash -322027418, now seen corresponding path program 1 times [2025-02-08 01:05:24,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:05:24,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416974692] [2025-02-08 01:05:24,020 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 01:05:24,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:05:24,033 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-02-08 01:05:24,048 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-02-08 01:05:24,049 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:05:24,049 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:05:24,258 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:05:24,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:05:24,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416974692] [2025-02-08 01:05:24,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [416974692] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:05:24,259 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 01:05:24,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-08 01:05:24,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865163352] [2025-02-08 01:05:24,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:05:24,260 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 01:05:24,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:05:24,260 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 01:05:24,260 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-08 01:05:24,263 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 46 [2025-02-08 01:05:24,264 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 40 transitions, 123 flow. Second operand has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:05:24,264 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:05:24,264 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 46 [2025-02-08 01:05:24,264 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:05:27,649 INFO L124 PetriNetUnfolderBase]: 23847/32415 cut-off events. [2025-02-08 01:05:27,649 INFO L125 PetriNetUnfolderBase]: For 12600/12600 co-relation queries the response was YES. [2025-02-08 01:05:27,773 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77481 conditions, 32415 events. 23847/32415 cut-off events. For 12600/12600 co-relation queries the response was YES. Maximal size of possible extension queue 974. Compared 180040 event pairs, 6007 based on Foata normal form. 600/33002 useless extension candidates. Maximal degree in co-relation 77465. Up to 24496 conditions per place. [2025-02-08 01:05:27,855 INFO L140 encePairwiseOnDemand]: 41/46 looper letters, 52 selfloop transitions, 2 changer transitions 57/116 dead transitions. [2025-02-08 01:05:27,855 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 116 transitions, 527 flow [2025-02-08 01:05:27,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-08 01:05:27,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-02-08 01:05:27,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 174 transitions. [2025-02-08 01:05:27,856 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5403726708074534 [2025-02-08 01:05:27,857 INFO L175 Difference]: Start difference. First operand has 59 places, 40 transitions, 123 flow. Second operand 7 states and 174 transitions. [2025-02-08 01:05:27,857 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 116 transitions, 527 flow [2025-02-08 01:05:28,100 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 116 transitions, 515 flow, removed 4 selfloop flow, removed 3 redundant places. [2025-02-08 01:05:28,102 INFO L231 Difference]: Finished difference. Result has 63 places, 40 transitions, 132 flow [2025-02-08 01:05:28,102 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=132, PETRI_PLACES=63, PETRI_TRANSITIONS=40} [2025-02-08 01:05:28,102 INFO L279 CegarLoopForPetriNet]: 54 programPoint places, 9 predicate places. [2025-02-08 01:05:28,102 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 40 transitions, 132 flow [2025-02-08 01:05:28,103 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:05:28,103 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:05:28,103 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] [2025-02-08 01:05:28,103 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-02-08 01:05:28,103 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-02-08 01:05:28,103 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:05:28,103 INFO L85 PathProgramCache]: Analyzing trace with hash 1723108092, now seen corresponding path program 1 times [2025-02-08 01:05:28,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:05:28,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273847280] [2025-02-08 01:05:28,104 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 01:05:28,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:05:28,116 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-02-08 01:05:28,135 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-02-08 01:05:28,137 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:05:28,137 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:05:28,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:05:28,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:05:28,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273847280] [2025-02-08 01:05:28,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1273847280] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:05:28,420 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 01:05:28,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-08 01:05:28,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807044253] [2025-02-08 01:05:28,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:05:28,420 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-08 01:05:28,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:05:28,420 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-08 01:05:28,420 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-08 01:05:28,428 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 46 [2025-02-08 01:05:28,428 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 40 transitions, 132 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) [2025-02-08 01:05:28,428 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:05:28,428 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 46 [2025-02-08 01:05:28,428 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:05:32,966 INFO L124 PetriNetUnfolderBase]: 35342/47634 cut-off events. [2025-02-08 01:05:32,966 INFO L125 PetriNetUnfolderBase]: For 30849/30903 co-relation queries the response was YES. [2025-02-08 01:05:33,154 INFO L83 FinitePrefix]: Finished finitePrefix Result has 117809 conditions, 47634 events. 35342/47634 cut-off events. For 30849/30903 co-relation queries the response was YES. Maximal size of possible extension queue 1484. Compared 276725 event pairs, 4185 based on Foata normal form. 648/48263 useless extension candidates. Maximal degree in co-relation 117789. Up to 22966 conditions per place. [2025-02-08 01:05:33,342 INFO L140 encePairwiseOnDemand]: 39/46 looper letters, 61 selfloop transitions, 4 changer transitions 43/113 dead transitions. [2025-02-08 01:05:33,347 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 113 transitions, 553 flow [2025-02-08 01:05:33,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-08 01:05:33,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-08 01:05:33,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 163 transitions. [2025-02-08 01:05:33,348 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5905797101449275 [2025-02-08 01:05:33,348 INFO L175 Difference]: Start difference. First operand has 63 places, 40 transitions, 132 flow. Second operand 6 states and 163 transitions. [2025-02-08 01:05:33,348 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 113 transitions, 553 flow [2025-02-08 01:05:34,111 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 113 transitions, 533 flow, removed 6 selfloop flow, removed 6 redundant places. [2025-02-08 01:05:34,116 INFO L231 Difference]: Finished difference. Result has 61 places, 40 transitions, 137 flow [2025-02-08 01:05:34,116 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=137, PETRI_PLACES=61, PETRI_TRANSITIONS=40} [2025-02-08 01:05:34,117 INFO L279 CegarLoopForPetriNet]: 54 programPoint places, 7 predicate places. [2025-02-08 01:05:34,120 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 40 transitions, 137 flow [2025-02-08 01:05:34,120 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) [2025-02-08 01:05:34,120 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:05:34,120 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] [2025-02-08 01:05:34,120 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-02-08 01:05:34,120 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-02-08 01:05:34,121 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:05:34,121 INFO L85 PathProgramCache]: Analyzing trace with hash -1967751458, now seen corresponding path program 2 times [2025-02-08 01:05:34,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:05:34,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707700507] [2025-02-08 01:05:34,121 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 01:05:34,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:05:34,145 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 21 statements into 1 equivalence classes. [2025-02-08 01:05:34,165 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-02-08 01:05:34,166 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-08 01:05:34,166 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:05:34,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:05:34,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:05:34,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707700507] [2025-02-08 01:05:34,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1707700507] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:05:34,434 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 01:05:34,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-08 01:05:34,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111453421] [2025-02-08 01:05:34,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:05:34,435 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 01:05:34,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:05:34,435 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 01:05:34,435 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-08 01:05:34,441 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 46 [2025-02-08 01:05:34,441 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 40 transitions, 137 flow. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 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) [2025-02-08 01:05:34,441 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:05:34,441 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 46 [2025-02-08 01:05:34,441 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:05:37,940 INFO L124 PetriNetUnfolderBase]: 33832/45767 cut-off events. [2025-02-08 01:05:37,940 INFO L125 PetriNetUnfolderBase]: For 24336/24345 co-relation queries the response was YES. [2025-02-08 01:05:38,153 INFO L83 FinitePrefix]: Finished finitePrefix Result has 110034 conditions, 45767 events. 33832/45767 cut-off events. For 24336/24345 co-relation queries the response was YES. Maximal size of possible extension queue 1349. Compared 268141 event pairs, 12510 based on Foata normal form. 908/46672 useless extension candidates. Maximal degree in co-relation 110015. Up to 20609 conditions per place. [2025-02-08 01:05:38,257 INFO L140 encePairwiseOnDemand]: 41/46 looper letters, 55 selfloop transitions, 3 changer transitions 61/124 dead transitions. [2025-02-08 01:05:38,257 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 124 transitions, 585 flow [2025-02-08 01:05:38,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-08 01:05:38,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-02-08 01:05:38,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 183 transitions. [2025-02-08 01:05:38,259 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5683229813664596 [2025-02-08 01:05:38,259 INFO L175 Difference]: Start difference. First operand has 61 places, 40 transitions, 137 flow. Second operand 7 states and 183 transitions. [2025-02-08 01:05:38,259 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 124 transitions, 585 flow [2025-02-08 01:05:38,779 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 124 transitions, 553 flow, removed 11 selfloop flow, removed 5 redundant places. [2025-02-08 01:05:38,781 INFO L231 Difference]: Finished difference. Result has 65 places, 40 transitions, 140 flow [2025-02-08 01:05:38,781 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=121, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=140, PETRI_PLACES=65, PETRI_TRANSITIONS=40} [2025-02-08 01:05:38,783 INFO L279 CegarLoopForPetriNet]: 54 programPoint places, 11 predicate places. [2025-02-08 01:05:38,783 INFO L471 AbstractCegarLoop]: Abstraction has has 65 places, 40 transitions, 140 flow [2025-02-08 01:05:38,784 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 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) [2025-02-08 01:05:38,784 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:05:38,784 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] [2025-02-08 01:05:38,784 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-02-08 01:05:38,784 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-02-08 01:05:38,784 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:05:38,784 INFO L85 PathProgramCache]: Analyzing trace with hash -85181573, now seen corresponding path program 1 times [2025-02-08 01:05:38,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:05:38,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317516525] [2025-02-08 01:05:38,785 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 01:05:38,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:05:38,795 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-02-08 01:05:38,812 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-02-08 01:05:38,815 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:05:38,815 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:05:40,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:05:40,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:05:40,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317516525] [2025-02-08 01:05:40,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [317516525] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:05:40,039 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 01:05:40,039 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-08 01:05:40,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081231126] [2025-02-08 01:05:40,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:05:40,039 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-08 01:05:40,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:05:40,040 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-08 01:05:40,040 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-02-08 01:05:40,043 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 46 [2025-02-08 01:05:40,044 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 40 transitions, 140 flow. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 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) [2025-02-08 01:05:40,044 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:05:40,044 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 46 [2025-02-08 01:05:40,044 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand