./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 c00e63dc 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-?-c00e63d-m [2025-02-06 04:25:08,014 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-06 04:25:08,052 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-02-06 04:25:08,055 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-06 04:25:08,055 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-06 04:25:08,068 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-06 04:25:08,069 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-06 04:25:08,069 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-06 04:25:08,069 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-06 04:25:08,069 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-06 04:25:08,069 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-06 04:25:08,070 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-06 04:25:08,070 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-06 04:25:08,070 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-06 04:25:08,070 INFO L153 SettingsManager]: * Use SBE=true [2025-02-06 04:25:08,070 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-06 04:25:08,070 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-06 04:25:08,070 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-06 04:25:08,070 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-06 04:25:08,070 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-06 04:25:08,071 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-06 04:25:08,071 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-06 04:25:08,071 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-06 04:25:08,071 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-06 04:25:08,071 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-06 04:25:08,071 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-06 04:25:08,071 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-06 04:25:08,071 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-06 04:25:08,071 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-06 04:25:08,071 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-06 04:25:08,071 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-06 04:25:08,072 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-06 04:25:08,072 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 04:25:08,072 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-06 04:25:08,072 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-06 04:25:08,072 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-06 04:25:08,072 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-06 04:25:08,072 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-06 04:25:08,072 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-06 04:25:08,072 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-06 04:25:08,072 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-06 04:25:08,072 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-06 04:25:08,072 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-06 04:25:08,072 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 [2025-02-06 04:25:08,304 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-06 04:25:08,310 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-06 04:25:08,312 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-06 04:25:08,312 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-06 04:25:08,313 INFO L274 PluginConnector]: CDTParser initialized [2025-02-06 04:25:08,314 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/safe019_power.opt.i [2025-02-06 04:25:09,490 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/8496adb27/81c1434fe4254f1f884ca708e763c5e0/FLAGb5261c70e [2025-02-06 04:25:09,791 INFO L384 CDTParser]: Found 1 translation units. [2025-02-06 04:25:09,792 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe019_power.opt.i [2025-02-06 04:25:09,807 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/8496adb27/81c1434fe4254f1f884ca708e763c5e0/FLAGb5261c70e [2025-02-06 04:25:09,826 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/8496adb27/81c1434fe4254f1f884ca708e763c5e0 [2025-02-06 04:25:09,828 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-06 04:25:09,829 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-06 04:25:09,831 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-06 04:25:09,831 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-06 04:25:09,834 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-06 04:25:09,834 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 04:25:09" (1/1) ... [2025-02-06 04:25:09,835 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59a8c1d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:25:09, skipping insertion in model container [2025-02-06 04:25:09,836 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 04:25:09" (1/1) ... [2025-02-06 04:25:09,870 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-06 04:25:09,984 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] [2025-02-06 04:25:10,153 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 04:25:10,159 INFO L200 MainTranslator]: Completed pre-run [2025-02-06 04:25:10,167 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] [2025-02-06 04:25:10,213 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 04:25:10,249 INFO L204 MainTranslator]: Completed translation [2025-02-06 04:25:10,250 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:25:10 WrapperNode [2025-02-06 04:25:10,251 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-06 04:25:10,251 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-06 04:25:10,252 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-06 04:25:10,252 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-06 04:25:10,256 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:25:10" (1/1) ... [2025-02-06 04:25:10,279 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:25:10" (1/1) ... [2025-02-06 04:25:10,310 INFO L138 Inliner]: procedures = 176, calls = 72, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 178 [2025-02-06 04:25:10,310 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-06 04:25:10,311 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-06 04:25:10,311 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-06 04:25:10,311 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-06 04:25:10,322 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:25:10" (1/1) ... [2025-02-06 04:25:10,322 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:25:10" (1/1) ... [2025-02-06 04:25:10,330 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:25:10" (1/1) ... [2025-02-06 04:25:10,353 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]. [2025-02-06 04:25:10,354 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:25:10" (1/1) ... [2025-02-06 04:25:10,354 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:25:10" (1/1) ... [2025-02-06 04:25:10,360 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:25:10" (1/1) ... [2025-02-06 04:25:10,361 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:25:10" (1/1) ... [2025-02-06 04:25:10,363 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:25:10" (1/1) ... [2025-02-06 04:25:10,364 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:25:10" (1/1) ... [2025-02-06 04:25:10,366 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-06 04:25:10,366 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-06 04:25:10,366 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-06 04:25:10,366 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-06 04:25:10,367 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:25:10" (1/1) ... [2025-02-06 04:25:10,371 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 04:25:10,380 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 04:25:10,389 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) [2025-02-06 04:25:10,396 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 [2025-02-06 04:25:10,409 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-02-06 04:25:10,409 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-02-06 04:25:10,409 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-02-06 04:25:10,409 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-02-06 04:25:10,410 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-02-06 04:25:10,410 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-06 04:25:10,410 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2025-02-06 04:25:10,410 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2025-02-06 04:25:10,411 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2025-02-06 04:25:10,411 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2025-02-06 04:25:10,411 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2025-02-06 04:25:10,411 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2025-02-06 04:25:10,411 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2025-02-06 04:25:10,411 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2025-02-06 04:25:10,411 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-06 04:25:10,411 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-02-06 04:25:10,411 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-02-06 04:25:10,411 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-06 04:25:10,412 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-06 04:25:10,413 WARN L227 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-02-06 04:25:10,540 INFO L257 CfgBuilder]: Building ICFG [2025-02-06 04:25:10,541 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-06 04:25:11,003 INFO L304 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-02-06 04:25:11,004 INFO L308 CfgBuilder]: Performing block encoding [2025-02-06 04:25:11,326 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-06 04:25:11,326 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-06 04:25:11,327 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 04:25:11 BoogieIcfgContainer [2025-02-06 04:25:11,327 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-06 04:25:11,328 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-06 04:25:11,328 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-06 04:25:11,332 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-06 04:25:11,333 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.02 04:25:09" (1/3) ... [2025-02-06 04:25:11,333 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47b7ed81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 04:25:11, skipping insertion in model container [2025-02-06 04:25:11,333 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:25:10" (2/3) ... [2025-02-06 04:25:11,334 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47b7ed81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 04:25:11, skipping insertion in model container [2025-02-06 04:25:11,334 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 04:25:11" (3/3) ... [2025-02-06 04:25:11,335 INFO L128 eAbstractionObserver]: Analyzing ICFG safe019_power.opt.i [2025-02-06 04:25:11,346 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-06 04:25:11,350 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. [2025-02-06 04:25:11,351 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-02-06 04:25:11,455 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-02-06 04:25:11,476 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 58 places, 46 transitions, 108 flow [2025-02-06 04:25:11,498 INFO L124 PetriNetUnfolderBase]: 1/42 cut-off events. [2025-02-06 04:25:11,499 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-06 04:25:11,501 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 82 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. [2025-02-06 04:25:11,501 INFO L82 GeneralOperation]: Start removeDead. Operand has 58 places, 46 transitions, 108 flow [2025-02-06 04:25:11,504 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 54 places, 42 transitions, 96 flow [2025-02-06 04:25:11,514 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-06 04:25:11,526 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;@79a37591, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-06 04:25:11,526 INFO L334 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2025-02-06 04:25:11,532 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-06 04:25:11,534 INFO L124 PetriNetUnfolderBase]: 0/9 cut-off events. [2025-02-06 04:25:11,534 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-06 04:25:11,535 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:25:11,535 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2025-02-06 04:25:11,535 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting P1Err0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-02-06 04:25:11,539 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:25:11,540 INFO L85 PathProgramCache]: Analyzing trace with hash 435058010, now seen corresponding path program 1 times [2025-02-06 04:25:11,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:25:11,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095567811] [2025-02-06 04:25:11,547 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:25:11,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:25:11,616 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-06 04:25:11,652 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-06 04:25:11,653 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:25:11,653 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:25:11,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:25:11,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:25:11,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095567811] [2025-02-06 04:25:11,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1095567811] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:25:11,942 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:25:11,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-02-06 04:25:11,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332618756] [2025-02-06 04:25:11,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:25:11,951 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 04:25:11,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:25:11,968 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 04:25:11,969 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 04:25:11,970 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2025-02-06 04:25:11,972 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) [2025-02-06 04:25:11,972 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:25:11,972 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2025-02-06 04:25:11,973 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:25:15,585 INFO L124 PetriNetUnfolderBase]: 23617/31806 cut-off events. [2025-02-06 04:25:15,585 INFO L125 PetriNetUnfolderBase]: For 204/204 co-relation queries the response was YES. [2025-02-06 04:25:15,655 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63496 conditions, 31806 events. 23617/31806 cut-off events. For 204/204 co-relation queries the response was YES. Maximal size of possible extension queue 1062. Compared 185336 event pairs, 3513 based on Foata normal form. 900/32505 useless extension candidates. Maximal degree in co-relation 63484. Up to 26201 conditions per place. [2025-02-06 04:25:15,783 INFO L140 encePairwiseOnDemand]: 42/46 looper letters, 54 selfloop transitions, 2 changer transitions 2/65 dead transitions. [2025-02-06 04:25:15,784 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 65 transitions, 264 flow [2025-02-06 04:25:15,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 04:25:15,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-06 04:25:15,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 94 transitions. [2025-02-06 04:25:15,792 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6811594202898551 [2025-02-06 04:25:15,793 INFO L175 Difference]: Start difference. First operand has 54 places, 42 transitions, 96 flow. Second operand 3 states and 94 transitions. [2025-02-06 04:25:15,794 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 65 transitions, 264 flow [2025-02-06 04:25:15,798 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 65 transitions, 258 flow, removed 0 selfloop flow, removed 4 redundant places. [2025-02-06 04:25:15,801 INFO L231 Difference]: Finished difference. Result has 51 places, 39 transitions, 90 flow [2025-02-06 04:25:15,803 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} [2025-02-06 04:25:15,807 INFO L279 CegarLoopForPetriNet]: 54 programPoint places, -3 predicate places. [2025-02-06 04:25:15,807 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 39 transitions, 90 flow [2025-02-06 04:25:15,808 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) [2025-02-06 04:25:15,808 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:25:15,808 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:25:15,809 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-06 04:25:15,809 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)] === [2025-02-06 04:25:15,809 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:25:15,810 INFO L85 PathProgramCache]: Analyzing trace with hash -849089174, now seen corresponding path program 1 times [2025-02-06 04:25:15,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:25:15,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [28090325] [2025-02-06 04:25:15,810 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:25:15,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:25:15,828 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-02-06 04:25:15,851 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-02-06 04:25:15,854 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:25:15,854 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:25:16,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:25:16,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:25:16,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [28090325] [2025-02-06 04:25:16,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [28090325] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:25:16,113 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:25:16,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 04:25:16,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848565099] [2025-02-06 04:25:16,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:25:16,113 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 04:25:16,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:25:16,115 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 04:25:16,115 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-06 04:25:16,122 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 46 [2025-02-06 04:25:16,122 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) [2025-02-06 04:25:16,123 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:25:16,123 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 46 [2025-02-06 04:25:16,123 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:25:20,613 INFO L124 PetriNetUnfolderBase]: 33665/45537 cut-off events. [2025-02-06 04:25:20,614 INFO L125 PetriNetUnfolderBase]: For 2196/2196 co-relation queries the response was YES. [2025-02-06 04:25:20,722 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92829 conditions, 45537 events. 33665/45537 cut-off events. For 2196/2196 co-relation queries the response was YES. Maximal size of possible extension queue 1525. Compared 267484 event pairs, 7155 based on Foata normal form. 0/44646 useless extension candidates. Maximal degree in co-relation 92819. Up to 28979 conditions per place. [2025-02-06 04:25:20,825 INFO L140 encePairwiseOnDemand]: 39/46 looper letters, 48 selfloop transitions, 3 changer transitions 84/140 dead transitions. [2025-02-06 04:25:20,825 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 140 transitions, 576 flow [2025-02-06 04:25:20,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-06 04:25:20,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-02-06 04:25:20,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 209 transitions. [2025-02-06 04:25:20,832 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5679347826086957 [2025-02-06 04:25:20,832 INFO L175 Difference]: Start difference. First operand has 51 places, 39 transitions, 90 flow. Second operand 8 states and 209 transitions. [2025-02-06 04:25:20,832 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 140 transitions, 576 flow [2025-02-06 04:25:20,836 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 140 transitions, 560 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-02-06 04:25:20,841 INFO L231 Difference]: Finished difference. Result has 60 places, 40 transitions, 119 flow [2025-02-06 04:25:20,841 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=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=119, PETRI_PLACES=60, PETRI_TRANSITIONS=40} [2025-02-06 04:25:20,842 INFO L279 CegarLoopForPetriNet]: 54 programPoint places, 6 predicate places. [2025-02-06 04:25:20,842 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 40 transitions, 119 flow [2025-02-06 04:25:20,843 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) [2025-02-06 04:25:20,843 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:25:20,844 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:25:20,844 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-06 04:25:20,844 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)] === [2025-02-06 04:25:20,845 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:25:20,845 INFO L85 PathProgramCache]: Analyzing trace with hash 1629520213, now seen corresponding path program 1 times [2025-02-06 04:25:20,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:25:20,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235291985] [2025-02-06 04:25:20,845 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:25:20,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:25:20,857 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-02-06 04:25:20,873 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-02-06 04:25:20,873 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:25:20,873 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:25:21,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:25:21,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:25:21,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [235291985] [2025-02-06 04:25:21,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [235291985] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:25:21,065 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:25:21,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 04:25:21,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132494716] [2025-02-06 04:25:21,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:25:21,066 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 04:25:21,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:25:21,066 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 04:25:21,067 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-06 04:25:21,071 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 46 [2025-02-06 04:25:21,071 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 40 transitions, 119 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) [2025-02-06 04:25:21,071 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:25:21,071 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 46 [2025-02-06 04:25:21,071 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:25:24,571 INFO L124 PetriNetUnfolderBase]: 26276/35699 cut-off events. [2025-02-06 04:25:24,571 INFO L125 PetriNetUnfolderBase]: For 16776/16786 co-relation queries the response was YES. [2025-02-06 04:25:24,699 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84311 conditions, 35699 events. 26276/35699 cut-off events. For 16776/16786 co-relation queries the response was YES. Maximal size of possible extension queue 1152. Compared 211552 event pairs, 3362 based on Foata normal form. 840/36529 useless extension candidates. Maximal degree in co-relation 84296. Up to 25961 conditions per place. [2025-02-06 04:25:24,798 INFO L140 encePairwiseOnDemand]: 41/46 looper letters, 58 selfloop transitions, 2 changer transitions 65/130 dead transitions. [2025-02-06 04:25:24,799 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 130 transitions, 631 flow [2025-02-06 04:25:24,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-06 04:25:24,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-02-06 04:25:24,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 186 transitions. [2025-02-06 04:25:24,800 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.577639751552795 [2025-02-06 04:25:24,800 INFO L175 Difference]: Start difference. First operand has 60 places, 40 transitions, 119 flow. Second operand 7 states and 186 transitions. [2025-02-06 04:25:24,800 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 130 transitions, 631 flow [2025-02-06 04:25:25,226 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 130 transitions, 618 flow, removed 4 selfloop flow, removed 3 redundant places. [2025-02-06 04:25:25,227 INFO L231 Difference]: Finished difference. Result has 62 places, 40 transitions, 128 flow [2025-02-06 04:25:25,227 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=51, 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=128, PETRI_PLACES=62, PETRI_TRANSITIONS=40} [2025-02-06 04:25:25,228 INFO L279 CegarLoopForPetriNet]: 54 programPoint places, 8 predicate places. [2025-02-06 04:25:25,228 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 40 transitions, 128 flow [2025-02-06 04:25:25,228 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) [2025-02-06 04:25:25,228 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:25:25,228 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] [2025-02-06 04:25:25,228 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-02-06 04:25:25,228 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)] === [2025-02-06 04:25:25,229 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:25:25,229 INFO L85 PathProgramCache]: Analyzing trace with hash -565457406, now seen corresponding path program 1 times [2025-02-06 04:25:25,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:25:25,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294920452] [2025-02-06 04:25:25,229 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:25:25,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:25:25,238 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-02-06 04:25:25,247 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-02-06 04:25:25,247 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:25:25,248 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:25:25,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:25:25,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:25:25,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294920452] [2025-02-06 04:25:25,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [294920452] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:25:25,478 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:25:25,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 04:25:25,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435646547] [2025-02-06 04:25:25,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:25:25,479 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 04:25:25,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:25:25,479 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 04:25:25,479 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-06 04:25:25,482 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 46 [2025-02-06 04:25:25,482 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 40 transitions, 128 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) [2025-02-06 04:25:25,482 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:25:25,483 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 46 [2025-02-06 04:25:25,483 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:25:28,796 INFO L124 PetriNetUnfolderBase]: 23847/32404 cut-off events. [2025-02-06 04:25:28,797 INFO L125 PetriNetUnfolderBase]: For 18672/18672 co-relation queries the response was YES. [2025-02-06 04:25:28,929 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79585 conditions, 32404 events. 23847/32404 cut-off events. For 18672/18672 co-relation queries the response was YES. Maximal size of possible extension queue 949. Compared 179692 event pairs, 6007 based on Foata normal form. 600/32976 useless extension candidates. Maximal degree in co-relation 79566. Up to 24496 conditions per place. [2025-02-06 04:25:29,007 INFO L140 encePairwiseOnDemand]: 41/46 looper letters, 52 selfloop transitions, 2 changer transitions 57/116 dead transitions. [2025-02-06 04:25:29,007 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 116 transitions, 537 flow [2025-02-06 04:25:29,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-06 04:25:29,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-02-06 04:25:29,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 174 transitions. [2025-02-06 04:25:29,009 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5403726708074534 [2025-02-06 04:25:29,009 INFO L175 Difference]: Start difference. First operand has 62 places, 40 transitions, 128 flow. Second operand 7 states and 174 transitions. [2025-02-06 04:25:29,009 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 116 transitions, 537 flow [2025-02-06 04:25:29,477 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 116 transitions, 515 flow, removed 8 selfloop flow, removed 6 redundant places. [2025-02-06 04:25:29,479 INFO L231 Difference]: Finished difference. Result has 63 places, 40 transitions, 132 flow [2025-02-06 04:25:29,479 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} [2025-02-06 04:25:29,479 INFO L279 CegarLoopForPetriNet]: 54 programPoint places, 9 predicate places. [2025-02-06 04:25:29,479 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 40 transitions, 132 flow [2025-02-06 04:25:29,480 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) [2025-02-06 04:25:29,480 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:25:29,480 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] [2025-02-06 04:25:29,480 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-02-06 04:25:29,480 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)] === [2025-02-06 04:25:29,480 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:25:29,480 INFO L85 PathProgramCache]: Analyzing trace with hash -1366893243, now seen corresponding path program 1 times [2025-02-06 04:25:29,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:25:29,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2147052931] [2025-02-06 04:25:29,481 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:25:29,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:25:29,490 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-02-06 04:25:29,503 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-02-06 04:25:29,504 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:25:29,504 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:25:29,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:25:29,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:25:29,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2147052931] [2025-02-06 04:25:29,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2147052931] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:25:29,839 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:25:29,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-06 04:25:29,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928133639] [2025-02-06 04:25:29,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:25:29,840 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 04:25:29,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:25:29,840 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 04:25:29,840 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-06 04:25:29,842 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 46 [2025-02-06 04:25:29,842 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 40 transitions, 132 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) [2025-02-06 04:25:29,843 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:25:29,843 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 46 [2025-02-06 04:25:29,843 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:25:34,619 INFO L124 PetriNetUnfolderBase]: 35112/47484 cut-off events. [2025-02-06 04:25:34,619 INFO L125 PetriNetUnfolderBase]: For 27939/27992 co-relation queries the response was YES. [2025-02-06 04:25:34,797 INFO L83 FinitePrefix]: Finished finitePrefix Result has 114429 conditions, 47484 events. 35112/47484 cut-off events. For 27939/27992 co-relation queries the response was YES. Maximal size of possible extension queue 1375. Compared 280440 event pairs, 13830 based on Foata normal form. 930/48363 useless extension candidates. Maximal degree in co-relation 114409. Up to 22124 conditions per place. [2025-02-06 04:25:34,906 INFO L140 encePairwiseOnDemand]: 41/46 looper letters, 55 selfloop transitions, 3 changer transitions 61/124 dead transitions. [2025-02-06 04:25:34,906 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 124 transitions, 583 flow [2025-02-06 04:25:34,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-06 04:25:34,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-02-06 04:25:34,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 183 transitions. [2025-02-06 04:25:34,907 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5683229813664596 [2025-02-06 04:25:34,907 INFO L175 Difference]: Start difference. First operand has 63 places, 40 transitions, 132 flow. Second operand 7 states and 183 transitions. [2025-02-06 04:25:34,907 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 124 transitions, 583 flow [2025-02-06 04:25:35,725 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 124 transitions, 549 flow, removed 15 selfloop flow, removed 6 redundant places. [2025-02-06 04:25:35,726 INFO L231 Difference]: Finished difference. Result has 64 places, 40 transitions, 137 flow [2025-02-06 04:25:35,726 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=53, 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=137, PETRI_PLACES=64, PETRI_TRANSITIONS=40} [2025-02-06 04:25:35,726 INFO L279 CegarLoopForPetriNet]: 54 programPoint places, 10 predicate places. [2025-02-06 04:25:35,727 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 40 transitions, 137 flow [2025-02-06 04:25:35,727 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) [2025-02-06 04:25:35,727 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:25:35,727 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] [2025-02-06 04:25:35,727 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-02-06 04:25:35,727 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)] === [2025-02-06 04:25:35,727 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:25:35,727 INFO L85 PathProgramCache]: Analyzing trace with hash 1507905421, now seen corresponding path program 1 times [2025-02-06 04:25:35,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:25:35,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465975089] [2025-02-06 04:25:35,727 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:25:35,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:25:35,742 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-02-06 04:25:35,760 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-02-06 04:25:35,760 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:25:35,760 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:25:35,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:25:35,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:25:35,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465975089] [2025-02-06 04:25:35,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [465975089] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:25:35,969 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:25:35,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-06 04:25:35,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089733041] [2025-02-06 04:25:35,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:25:35,969 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-06 04:25:35,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:25:35,970 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-06 04:25:35,970 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-06 04:25:35,973 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 46 [2025-02-06 04:25:35,973 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 40 transitions, 137 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) [2025-02-06 04:25:35,973 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:25:35,973 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 46 [2025-02-06 04:25:35,973 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand