./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-theta/wsc.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version da043454 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/pthread-theta/wsc.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash cea92baab62ba0c35a952a0cf718b682864c9b4a52d803c2eb370964dcb75f16 --- Real Ultimate output --- This is Ultimate 0.3.0-wip.fs.system-includes-da04345-m [2025-04-30 10:16:22,385 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-04-30 10:16:22,435 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-04-30 10:16:22,440 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-04-30 10:16:22,443 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-04-30 10:16:22,466 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-04-30 10:16:22,467 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-04-30 10:16:22,467 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-04-30 10:16:22,467 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-04-30 10:16:22,468 INFO L153 SettingsManager]: * Use memory slicer=true [2025-04-30 10:16:22,468 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-04-30 10:16:22,468 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-04-30 10:16:22,468 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-04-30 10:16:22,468 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-04-30 10:16:22,468 INFO L153 SettingsManager]: * Use SBE=true [2025-04-30 10:16:22,468 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-04-30 10:16:22,469 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-04-30 10:16:22,469 INFO L153 SettingsManager]: * sizeof long=4 [2025-04-30 10:16:22,470 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-04-30 10:16:22,470 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-04-30 10:16:22,470 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-04-30 10:16:22,470 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-04-30 10:16:22,470 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-04-30 10:16:22,470 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-04-30 10:16:22,470 INFO L153 SettingsManager]: * sizeof long double=12 [2025-04-30 10:16:22,470 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-04-30 10:16:22,470 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-04-30 10:16:22,470 INFO L153 SettingsManager]: * Use constant arrays=true [2025-04-30 10:16:22,470 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-04-30 10:16:22,470 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-30 10:16:22,470 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-30 10:16:22,470 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-30 10:16:22,471 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-30 10:16:22,471 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-04-30 10:16:22,471 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-30 10:16:22,471 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-30 10:16:22,471 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-30 10:16:22,471 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-30 10:16:22,471 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-04-30 10:16:22,471 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-04-30 10:16:22,471 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-04-30 10:16:22,471 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-04-30 10:16:22,471 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-04-30 10:16:22,471 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-04-30 10:16:22,471 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-04-30 10:16:22,471 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-04-30 10:16:22,471 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-04-30 10:16:22,471 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cea92baab62ba0c35a952a0cf718b682864c9b4a52d803c2eb370964dcb75f16 [2025-04-30 10:16:22,728 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-04-30 10:16:22,735 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-04-30 10:16:22,737 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-04-30 10:16:22,738 INFO L270 PluginConnector]: Initializing CDTParser... [2025-04-30 10:16:22,739 INFO L274 PluginConnector]: CDTParser initialized [2025-04-30 10:16:22,740 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-theta/wsc.i [2025-04-30 10:16:24,083 INFO L538 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b7004c9bd/49751464d25d44078e091dbe4c8fa80c/FLAG878335e73 [2025-04-30 10:16:24,340 INFO L389 CDTParser]: Found 1 translation units. [2025-04-30 10:16:24,340 INFO L178 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-theta/wsc.i [2025-04-30 10:16:24,354 INFO L432 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b7004c9bd/49751464d25d44078e091dbe4c8fa80c/FLAG878335e73 [2025-04-30 10:16:25,083 INFO L440 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b7004c9bd/49751464d25d44078e091dbe4c8fa80c [2025-04-30 10:16:25,085 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-04-30 10:16:25,086 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-04-30 10:16:25,087 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-04-30 10:16:25,087 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-04-30 10:16:25,090 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-04-30 10:16:25,090 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.04 10:16:25" (1/1) ... [2025-04-30 10:16:25,091 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27f6d525 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 10:16:25, skipping insertion in model container [2025-04-30 10:16:25,091 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.04 10:16:25" (1/1) ... [2025-04-30 10:16:25,115 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-04-30 10:16:25,344 WARN L117 LibraryModelHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-theta/wsc.i[33949,33962] [2025-04-30 10:16:25,347 INFO L211 PostProcessor]: Analyzing one entry point: main [2025-04-30 10:16:25,355 INFO L200 MainTranslator]: Completed pre-run [2025-04-30 10:16:25,421 WARN L117 LibraryModelHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-theta/wsc.i[33949,33962] [2025-04-30 10:16:25,425 INFO L211 PostProcessor]: Analyzing one entry point: main [2025-04-30 10:16:25,454 INFO L204 MainTranslator]: Completed translation [2025-04-30 10:16:25,455 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 10:16:25 WrapperNode [2025-04-30 10:16:25,455 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-04-30 10:16:25,456 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-04-30 10:16:25,456 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-04-30 10:16:25,456 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-04-30 10:16:25,461 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 10:16:25" (1/1) ... [2025-04-30 10:16:25,474 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 10:16:25" (1/1) ... [2025-04-30 10:16:25,501 INFO L138 Inliner]: procedures = 171, calls = 26, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 122 [2025-04-30 10:16:25,502 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-04-30 10:16:25,502 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-04-30 10:16:25,502 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-04-30 10:16:25,502 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-04-30 10:16:25,509 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 10:16:25" (1/1) ... [2025-04-30 10:16:25,509 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 10:16:25" (1/1) ... [2025-04-30 10:16:25,512 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 10:16:25" (1/1) ... [2025-04-30 10:16:25,523 INFO L175 MemorySlicer]: Split 8 memory accesses to 2 slices as follows [2, 6]. 75 percent of accesses are in the largest equivalence class. The 8 initializations are split as follows [2, 6]. The 0 writes are split as follows [0, 0]. [2025-04-30 10:16:25,523 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 10:16:25" (1/1) ... [2025-04-30 10:16:25,523 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 10:16:25" (1/1) ... [2025-04-30 10:16:25,531 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 10:16:25" (1/1) ... [2025-04-30 10:16:25,532 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 10:16:25" (1/1) ... [2025-04-30 10:16:25,533 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 10:16:25" (1/1) ... [2025-04-30 10:16:25,534 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 10:16:25" (1/1) ... [2025-04-30 10:16:25,538 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 10:16:25" (1/1) ... [2025-04-30 10:16:25,542 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-04-30 10:16:25,542 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-04-30 10:16:25,543 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-04-30 10:16:25,543 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-04-30 10:16:25,543 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 10:16:25" (1/1) ... [2025-04-30 10:16:25,551 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-30 10:16:25,560 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-30 10:16:25,571 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-04-30 10:16:25,573 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-04-30 10:16:25,591 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-04-30 10:16:25,591 INFO L130 BoogieDeclarations]: Found specification of procedure f0 [2025-04-30 10:16:25,591 INFO L138 BoogieDeclarations]: Found implementation of procedure f0 [2025-04-30 10:16:25,591 INFO L130 BoogieDeclarations]: Found specification of procedure f1 [2025-04-30 10:16:25,591 INFO L138 BoogieDeclarations]: Found implementation of procedure f1 [2025-04-30 10:16:25,592 INFO L130 BoogieDeclarations]: Found specification of procedure f2 [2025-04-30 10:16:25,592 INFO L138 BoogieDeclarations]: Found implementation of procedure f2 [2025-04-30 10:16:25,592 INFO L130 BoogieDeclarations]: Found specification of procedure f3 [2025-04-30 10:16:25,592 INFO L138 BoogieDeclarations]: Found implementation of procedure f3 [2025-04-30 10:16:25,592 INFO L130 BoogieDeclarations]: Found specification of procedure f4 [2025-04-30 10:16:25,592 INFO L138 BoogieDeclarations]: Found implementation of procedure f4 [2025-04-30 10:16:25,592 INFO L130 BoogieDeclarations]: Found specification of procedure f5 [2025-04-30 10:16:25,592 INFO L138 BoogieDeclarations]: Found implementation of procedure f5 [2025-04-30 10:16:25,592 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-04-30 10:16:25,592 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-04-30 10:16:25,592 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-04-30 10:16:25,592 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-04-30 10:16:25,593 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-04-30 10:16:25,719 INFO L234 CfgBuilder]: Building ICFG [2025-04-30 10:16:25,722 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-04-30 10:16:25,937 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-04-30 10:16:25,937 INFO L283 CfgBuilder]: Performing block encoding [2025-04-30 10:16:26,064 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-04-30 10:16:26,064 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-04-30 10:16:26,065 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.04 10:16:26 BoogieIcfgContainer [2025-04-30 10:16:26,065 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-04-30 10:16:26,066 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-04-30 10:16:26,066 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-04-30 10:16:26,069 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-04-30 10:16:26,069 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.04 10:16:25" (1/3) ... [2025-04-30 10:16:26,070 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@df20211 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.04 10:16:26, skipping insertion in model container [2025-04-30 10:16:26,070 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 10:16:25" (2/3) ... [2025-04-30 10:16:26,070 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@df20211 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.04 10:16:26, skipping insertion in model container [2025-04-30 10:16:26,070 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.04 10:16:26" (3/3) ... [2025-04-30 10:16:26,071 INFO L128 eAbstractionObserver]: Analyzing ICFG wsc.i [2025-04-30 10:16:26,082 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-04-30 10:16:26,083 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG wsc.i that has 7 procedures, 50 locations, 43 edges, 1 initial locations, 0 loop locations, and 1 error locations. [2025-04-30 10:16:26,083 INFO L490 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-04-30 10:16:26,169 INFO L143 ThreadInstanceAdder]: Constructed 6 joinOtherThreadTransitions. [2025-04-30 10:16:26,196 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 68 places, 49 transitions, 140 flow [2025-04-30 10:16:26,231 INFO L116 PetriNetUnfolderBase]: 0/43 cut-off events. [2025-04-30 10:16:26,233 INFO L117 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2025-04-30 10:16:26,234 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68 conditions, 43 events. 0/43 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 61 event pairs, 0 based on Foata normal form. 0/42 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2025-04-30 10:16:26,234 INFO L82 GeneralOperation]: Start removeDead. Operand has 68 places, 49 transitions, 140 flow [2025-04-30 10:16:26,236 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 61 places, 42 transitions, 120 flow [2025-04-30 10:16:26,246 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-04-30 10:16:26,253 INFO L340 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;@517bbc64, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-30 10:16:26,255 INFO L341 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2025-04-30 10:16:26,270 INFO L177 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-04-30 10:16:26,270 INFO L116 PetriNetUnfolderBase]: 0/41 cut-off events. [2025-04-30 10:16:26,270 INFO L117 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2025-04-30 10:16:26,270 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-30 10:16:26,271 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-30 10:16:26,271 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-04-30 10:16:26,276 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-30 10:16:26,277 INFO L85 PathProgramCache]: Analyzing trace with hash 1475436085, now seen corresponding path program 1 times [2025-04-30 10:16:26,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-30 10:16:26,282 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754687898] [2025-04-30 10:16:26,283 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-30 10:16:26,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-30 10:16:26,361 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 42 statements into 1 equivalence classes. [2025-04-30 10:16:26,384 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 42 of 42 statements. [2025-04-30 10:16:26,385 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-30 10:16:26,385 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-30 10:16:26,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-30 10:16:26,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-30 10:16:26,601 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754687898] [2025-04-30 10:16:26,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [754687898] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-30 10:16:26,603 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-30 10:16:26,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-04-30 10:16:26,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590762253] [2025-04-30 10:16:26,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-30 10:16:26,610 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-04-30 10:16:26,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-30 10:16:26,633 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-04-30 10:16:26,633 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-30 10:16:26,640 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 49 [2025-04-30 10:16:26,643 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 42 transitions, 120 flow. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-30 10:16:26,643 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-30 10:16:26,643 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 49 [2025-04-30 10:16:26,644 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-30 10:16:27,701 INFO L116 PetriNetUnfolderBase]: 7314/10487 cut-off events. [2025-04-30 10:16:27,702 INFO L117 PetriNetUnfolderBase]: For 1083/1083 co-relation queries the response was YES. [2025-04-30 10:16:27,742 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21076 conditions, 10487 events. 7314/10487 cut-off events. For 1083/1083 co-relation queries the response was YES. Maximal size of possible extension queue 640. Compared 63541 event pairs, 5496 based on Foata normal form. 24/10494 useless extension candidates. Maximal degree in co-relation 20723. Up to 9584 conditions per place. [2025-04-30 10:16:27,795 INFO L140 encePairwiseOnDemand]: 42/49 looper letters, 39 selfloop transitions, 3 changer transitions 0/53 dead transitions. [2025-04-30 10:16:27,795 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 53 transitions, 238 flow [2025-04-30 10:16:27,797 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-30 10:16:27,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-04-30 10:16:27,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 97 transitions. [2025-04-30 10:16:27,808 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.6598639455782312 [2025-04-30 10:16:27,809 INFO L175 Difference]: Start difference. First operand has 61 places, 42 transitions, 120 flow. Second operand 3 states and 97 transitions. [2025-04-30 10:16:27,810 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 53 transitions, 238 flow [2025-04-30 10:16:27,820 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 53 transitions, 206 flow, removed 0 selfloop flow, removed 12 redundant places. [2025-04-30 10:16:27,824 INFO L231 Difference]: Finished difference. Result has 52 places, 44 transitions, 121 flow [2025-04-30 10:16:27,826 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=121, PETRI_PLACES=52, PETRI_TRANSITIONS=44} [2025-04-30 10:16:27,830 INFO L279 CegarLoopForPetriNet]: 61 programPoint places, -9 predicate places. [2025-04-30 10:16:27,830 INFO L485 AbstractCegarLoop]: Abstraction has has 52 places, 44 transitions, 121 flow [2025-04-30 10:16:27,830 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-30 10:16:27,831 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-30 10:16:27,831 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-30 10:16:27,831 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-04-30 10:16:27,831 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-04-30 10:16:27,832 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-30 10:16:27,833 INFO L85 PathProgramCache]: Analyzing trace with hash -1140421877, now seen corresponding path program 2 times [2025-04-30 10:16:27,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-30 10:16:27,833 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566785262] [2025-04-30 10:16:27,833 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-30 10:16:27,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-30 10:16:27,849 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 42 statements into 1 equivalence classes. [2025-04-30 10:16:27,860 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 42 of 42 statements. [2025-04-30 10:16:27,861 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-04-30 10:16:27,861 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-30 10:16:27,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-30 10:16:27,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-30 10:16:27,942 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566785262] [2025-04-30 10:16:27,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1566785262] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-30 10:16:27,942 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-30 10:16:27,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-04-30 10:16:27,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984225085] [2025-04-30 10:16:27,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-30 10:16:27,943 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-04-30 10:16:27,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-30 10:16:27,944 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-04-30 10:16:27,944 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-30 10:16:27,976 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 49 [2025-04-30 10:16:27,976 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 44 transitions, 121 flow. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-30 10:16:27,976 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-30 10:16:27,976 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 49 [2025-04-30 10:16:27,976 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-30 10:16:28,782 INFO L116 PetriNetUnfolderBase]: 7944/11708 cut-off events. [2025-04-30 10:16:28,783 INFO L117 PetriNetUnfolderBase]: For 2874/2874 co-relation queries the response was YES. [2025-04-30 10:16:28,825 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25985 conditions, 11708 events. 7944/11708 cut-off events. For 2874/2874 co-relation queries the response was YES. Maximal size of possible extension queue 709. Compared 77647 event pairs, 2796 based on Foata normal form. 1063/12393 useless extension candidates. Maximal degree in co-relation 9485. Up to 6511 conditions per place. [2025-04-30 10:16:28,874 INFO L140 encePairwiseOnDemand]: 43/49 looper letters, 52 selfloop transitions, 5 changer transitions 0/68 dead transitions. [2025-04-30 10:16:28,874 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 68 transitions, 299 flow [2025-04-30 10:16:28,875 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-30 10:16:28,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-04-30 10:16:28,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 109 transitions. [2025-04-30 10:16:28,878 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.7414965986394558 [2025-04-30 10:16:28,878 INFO L175 Difference]: Start difference. First operand has 52 places, 44 transitions, 121 flow. Second operand 3 states and 109 transitions. [2025-04-30 10:16:28,878 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 68 transitions, 299 flow [2025-04-30 10:16:28,880 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 68 transitions, 296 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-04-30 10:16:28,882 INFO L231 Difference]: Finished difference. Result has 55 places, 47 transitions, 160 flow [2025-04-30 10:16:28,883 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=160, PETRI_PLACES=55, PETRI_TRANSITIONS=47} [2025-04-30 10:16:28,884 INFO L279 CegarLoopForPetriNet]: 61 programPoint places, -6 predicate places. [2025-04-30 10:16:28,884 INFO L485 AbstractCegarLoop]: Abstraction has has 55 places, 47 transitions, 160 flow [2025-04-30 10:16:28,884 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-30 10:16:28,884 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-30 10:16:28,885 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-30 10:16:28,885 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-04-30 10:16:28,885 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-04-30 10:16:28,885 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-30 10:16:28,886 INFO L85 PathProgramCache]: Analyzing trace with hash -280158389, now seen corresponding path program 3 times [2025-04-30 10:16:28,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-30 10:16:28,887 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706431269] [2025-04-30 10:16:28,887 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-30 10:16:28,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-30 10:16:28,903 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 42 statements into 1 equivalence classes. [2025-04-30 10:16:28,915 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 42 of 42 statements. [2025-04-30 10:16:28,916 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-04-30 10:16:28,916 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-30 10:16:28,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-30 10:16:28,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-30 10:16:28,996 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706431269] [2025-04-30 10:16:28,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1706431269] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-30 10:16:28,996 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-30 10:16:28,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-04-30 10:16:28,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557431129] [2025-04-30 10:16:28,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-30 10:16:28,996 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-04-30 10:16:28,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-30 10:16:28,997 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-04-30 10:16:28,997 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-30 10:16:29,001 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 49 [2025-04-30 10:16:29,002 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 47 transitions, 160 flow. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-30 10:16:29,002 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-30 10:16:29,002 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 49 [2025-04-30 10:16:29,002 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-30 10:16:29,790 INFO L116 PetriNetUnfolderBase]: 9485/13564 cut-off events. [2025-04-30 10:16:29,791 INFO L117 PetriNetUnfolderBase]: For 9122/9261 co-relation queries the response was YES. [2025-04-30 10:16:29,822 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33729 conditions, 13564 events. 9485/13564 cut-off events. For 9122/9261 co-relation queries the response was YES. Maximal size of possible extension queue 694. Compared 81800 event pairs, 5211 based on Foata normal form. 48/13422 useless extension candidates. Maximal degree in co-relation 10810. Up to 12751 conditions per place. [2025-04-30 10:16:29,926 INFO L140 encePairwiseOnDemand]: 45/49 looper letters, 42 selfloop transitions, 3 changer transitions 0/59 dead transitions. [2025-04-30 10:16:29,926 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 59 transitions, 285 flow [2025-04-30 10:16:29,927 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-30 10:16:29,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-04-30 10:16:29,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 95 transitions. [2025-04-30 10:16:29,929 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.6462585034013606 [2025-04-30 10:16:29,930 INFO L175 Difference]: Start difference. First operand has 55 places, 47 transitions, 160 flow. Second operand 3 states and 95 transitions. [2025-04-30 10:16:29,930 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 59 transitions, 285 flow [2025-04-30 10:16:29,939 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 59 transitions, 263 flow, removed 6 selfloop flow, removed 2 redundant places. [2025-04-30 10:16:29,941 INFO L231 Difference]: Finished difference. Result has 56 places, 49 transitions, 161 flow [2025-04-30 10:16:29,941 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=161, PETRI_PLACES=56, PETRI_TRANSITIONS=49} [2025-04-30 10:16:29,942 INFO L279 CegarLoopForPetriNet]: 61 programPoint places, -5 predicate places. [2025-04-30 10:16:29,942 INFO L485 AbstractCegarLoop]: Abstraction has has 56 places, 49 transitions, 161 flow [2025-04-30 10:16:29,942 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-30 10:16:29,942 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-30 10:16:29,942 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-30 10:16:29,943 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-04-30 10:16:29,943 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-04-30 10:16:29,943 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-30 10:16:29,943 INFO L85 PathProgramCache]: Analyzing trace with hash 120733585, now seen corresponding path program 4 times [2025-04-30 10:16:29,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-30 10:16:29,943 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366323731] [2025-04-30 10:16:29,943 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-30 10:16:29,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-30 10:16:29,957 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 42 statements into 2 equivalence classes. [2025-04-30 10:16:29,964 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 41 of 42 statements. [2025-04-30 10:16:29,964 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-04-30 10:16:29,964 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-30 10:16:30,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-30 10:16:30,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-30 10:16:30,015 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366323731] [2025-04-30 10:16:30,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1366323731] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-30 10:16:30,015 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-30 10:16:30,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-04-30 10:16:30,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377533397] [2025-04-30 10:16:30,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-30 10:16:30,016 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-04-30 10:16:30,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-30 10:16:30,016 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-04-30 10:16:30,016 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-30 10:16:30,019 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 49 [2025-04-30 10:16:30,019 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 49 transitions, 161 flow. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-30 10:16:30,020 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-30 10:16:30,020 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 49 [2025-04-30 10:16:30,020 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-30 10:16:31,012 INFO L116 PetriNetUnfolderBase]: 14795/21073 cut-off events. [2025-04-30 10:16:31,016 INFO L117 PetriNetUnfolderBase]: For 10327/10610 co-relation queries the response was YES. [2025-04-30 10:16:31,058 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51178 conditions, 21073 events. 14795/21073 cut-off events. For 10327/10610 co-relation queries the response was YES. Maximal size of possible extension queue 1163. Compared 137466 event pairs, 6642 based on Foata normal form. 836/21263 useless extension candidates. Maximal degree in co-relation 21691. Up to 10887 conditions per place. [2025-04-30 10:16:31,099 INFO L140 encePairwiseOnDemand]: 46/49 looper letters, 55 selfloop transitions, 2 changer transitions 0/73 dead transitions. [2025-04-30 10:16:31,099 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 73 transitions, 350 flow [2025-04-30 10:16:31,103 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-30 10:16:31,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-04-30 10:16:31,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 105 transitions. [2025-04-30 10:16:31,103 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.7142857142857143 [2025-04-30 10:16:31,103 INFO L175 Difference]: Start difference. First operand has 56 places, 49 transitions, 161 flow. Second operand 3 states and 105 transitions. [2025-04-30 10:16:31,103 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 73 transitions, 350 flow [2025-04-30 10:16:31,105 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 73 transitions, 347 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-04-30 10:16:31,106 INFO L231 Difference]: Finished difference. Result has 58 places, 50 transitions, 170 flow [2025-04-30 10:16:31,106 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=170, PETRI_PLACES=58, PETRI_TRANSITIONS=50} [2025-04-30 10:16:31,106 INFO L279 CegarLoopForPetriNet]: 61 programPoint places, -3 predicate places. [2025-04-30 10:16:31,107 INFO L485 AbstractCegarLoop]: Abstraction has has 58 places, 50 transitions, 170 flow [2025-04-30 10:16:31,107 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-30 10:16:31,107 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-30 10:16:31,107 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-30 10:16:31,107 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-04-30 10:16:31,107 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-04-30 10:16:31,108 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-30 10:16:31,108 INFO L85 PathProgramCache]: Analyzing trace with hash 869462919, now seen corresponding path program 5 times [2025-04-30 10:16:31,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-30 10:16:31,108 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948724204] [2025-04-30 10:16:31,108 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-30 10:16:31,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-30 10:16:31,118 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 42 statements into 1 equivalence classes. [2025-04-30 10:16:31,122 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 42 of 42 statements. [2025-04-30 10:16:31,122 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-04-30 10:16:31,122 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-30 10:16:31,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-30 10:16:31,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-30 10:16:31,231 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [948724204] [2025-04-30 10:16:31,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [948724204] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-30 10:16:31,231 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-30 10:16:31,232 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-04-30 10:16:31,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437309556] [2025-04-30 10:16:31,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-30 10:16:31,232 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-04-30 10:16:31,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-30 10:16:31,232 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-04-30 10:16:31,232 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-30 10:16:31,234 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 49 [2025-04-30 10:16:31,234 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 50 transitions, 170 flow. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-30 10:16:31,234 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-30 10:16:31,234 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 49 [2025-04-30 10:16:31,234 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-30 10:16:31,940 INFO L116 PetriNetUnfolderBase]: 8531/13429 cut-off events. [2025-04-30 10:16:31,941 INFO L117 PetriNetUnfolderBase]: For 7285/7617 co-relation queries the response was YES. [2025-04-30 10:16:31,981 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32130 conditions, 13429 events. 8531/13429 cut-off events. For 7285/7617 co-relation queries the response was YES. Maximal size of possible extension queue 751. Compared 96121 event pairs, 4087 based on Foata normal form. 821/13950 useless extension candidates. Maximal degree in co-relation 13690. Up to 7292 conditions per place. [2025-04-30 10:16:32,007 INFO L140 encePairwiseOnDemand]: 45/49 looper letters, 49 selfloop transitions, 3 changer transitions 0/66 dead transitions. [2025-04-30 10:16:32,007 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 66 transitions, 309 flow [2025-04-30 10:16:32,008 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-30 10:16:32,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-04-30 10:16:32,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 104 transitions. [2025-04-30 10:16:32,009 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.7074829931972789 [2025-04-30 10:16:32,009 INFO L175 Difference]: Start difference. First operand has 58 places, 50 transitions, 170 flow. Second operand 3 states and 104 transitions. [2025-04-30 10:16:32,009 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 66 transitions, 309 flow [2025-04-30 10:16:32,013 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 66 transitions, 307 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-04-30 10:16:32,014 INFO L231 Difference]: Finished difference. Result has 59 places, 47 transitions, 158 flow [2025-04-30 10:16:32,014 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=158, PETRI_PLACES=59, PETRI_TRANSITIONS=47} [2025-04-30 10:16:32,015 INFO L279 CegarLoopForPetriNet]: 61 programPoint places, -2 predicate places. [2025-04-30 10:16:32,015 INFO L485 AbstractCegarLoop]: Abstraction has has 59 places, 47 transitions, 158 flow [2025-04-30 10:16:32,015 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-30 10:16:32,015 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-30 10:16:32,015 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-30 10:16:32,015 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-04-30 10:16:32,016 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-04-30 10:16:32,016 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-30 10:16:32,016 INFO L85 PathProgramCache]: Analyzing trace with hash 1547900291, now seen corresponding path program 6 times [2025-04-30 10:16:32,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-30 10:16:32,016 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908413216] [2025-04-30 10:16:32,016 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-30 10:16:32,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-30 10:16:32,026 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 42 statements into 1 equivalence classes. [2025-04-30 10:16:32,031 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) and asserted 42 of 42 statements. [2025-04-30 10:16:32,031 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2025-04-30 10:16:32,031 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-30 10:16:32,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-30 10:16:32,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-30 10:16:32,091 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908413216] [2025-04-30 10:16:32,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1908413216] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-30 10:16:32,091 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-30 10:16:32,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-04-30 10:16:32,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688277895] [2025-04-30 10:16:32,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-30 10:16:32,091 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-04-30 10:16:32,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-30 10:16:32,092 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-04-30 10:16:32,092 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-30 10:16:32,094 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 49 [2025-04-30 10:16:32,094 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 47 transitions, 158 flow. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-30 10:16:32,094 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-30 10:16:32,094 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 49 [2025-04-30 10:16:32,094 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-30 10:16:33,056 INFO L116 PetriNetUnfolderBase]: 12081/17750 cut-off events. [2025-04-30 10:16:33,056 INFO L117 PetriNetUnfolderBase]: For 7506/7817 co-relation queries the response was YES. [2025-04-30 10:16:33,098 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43152 conditions, 17750 events. 12081/17750 cut-off events. For 7506/7817 co-relation queries the response was YES. Maximal size of possible extension queue 954. Compared 118997 event pairs, 7075 based on Foata normal form. 603/17465 useless extension candidates. Maximal degree in co-relation 15848. Up to 9802 conditions per place. [2025-04-30 10:16:33,126 INFO L140 encePairwiseOnDemand]: 46/49 looper letters, 47 selfloop transitions, 2 changer transitions 0/65 dead transitions. [2025-04-30 10:16:33,126 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 65 transitions, 313 flow [2025-04-30 10:16:33,127 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-30 10:16:33,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-04-30 10:16:33,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 101 transitions. [2025-04-30 10:16:33,127 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.6870748299319728 [2025-04-30 10:16:33,127 INFO L175 Difference]: Start difference. First operand has 59 places, 47 transitions, 158 flow. Second operand 3 states and 101 transitions. [2025-04-30 10:16:33,127 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 65 transitions, 313 flow [2025-04-30 10:16:33,131 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 65 transitions, 310 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-04-30 10:16:33,132 INFO L231 Difference]: Finished difference. Result has 61 places, 48 transitions, 167 flow [2025-04-30 10:16:33,132 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=155, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=167, PETRI_PLACES=61, PETRI_TRANSITIONS=48} [2025-04-30 10:16:33,132 INFO L279 CegarLoopForPetriNet]: 61 programPoint places, 0 predicate places. [2025-04-30 10:16:33,132 INFO L485 AbstractCegarLoop]: Abstraction has has 61 places, 48 transitions, 167 flow [2025-04-30 10:16:33,133 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-30 10:16:33,133 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-30 10:16:33,133 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-30 10:16:33,133 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-04-30 10:16:33,133 INFO L403 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-04-30 10:16:33,133 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-30 10:16:33,133 INFO L85 PathProgramCache]: Analyzing trace with hash 2095039925, now seen corresponding path program 7 times [2025-04-30 10:16:33,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-30 10:16:33,133 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179008465] [2025-04-30 10:16:33,134 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-30 10:16:33,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-30 10:16:33,142 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 42 statements into 1 equivalence classes. [2025-04-30 10:16:33,145 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 42 of 42 statements. [2025-04-30 10:16:33,145 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-30 10:16:33,146 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-30 10:16:33,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-30 10:16:33,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-30 10:16:33,202 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179008465] [2025-04-30 10:16:33,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [179008465] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-30 10:16:33,202 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-30 10:16:33,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-04-30 10:16:33,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777082568] [2025-04-30 10:16:33,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-30 10:16:33,202 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-04-30 10:16:33,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-30 10:16:33,203 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-04-30 10:16:33,203 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-30 10:16:33,204 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 49 [2025-04-30 10:16:33,204 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 48 transitions, 167 flow. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-30 10:16:33,204 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-30 10:16:33,204 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 49 [2025-04-30 10:16:33,205 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-30 10:16:34,090 INFO L116 PetriNetUnfolderBase]: 15915/24038 cut-off events. [2025-04-30 10:16:34,090 INFO L117 PetriNetUnfolderBase]: For 12163/12323 co-relation queries the response was YES. [2025-04-30 10:16:34,174 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59628 conditions, 24038 events. 15915/24038 cut-off events. For 12163/12323 co-relation queries the response was YES. Maximal size of possible extension queue 1315. Compared 173831 event pairs, 9310 based on Foata normal form. 839/24010 useless extension candidates. Maximal degree in co-relation 31759. Up to 13864 conditions per place. [2025-04-30 10:16:34,208 INFO L140 encePairwiseOnDemand]: 46/49 looper letters, 49 selfloop transitions, 2 changer transitions 5/68 dead transitions. [2025-04-30 10:16:34,208 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 68 transitions, 331 flow [2025-04-30 10:16:34,208 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-30 10:16:34,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-04-30 10:16:34,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 103 transitions. [2025-04-30 10:16:34,209 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.7006802721088435 [2025-04-30 10:16:34,209 INFO L175 Difference]: Start difference. First operand has 61 places, 48 transitions, 167 flow. Second operand 3 states and 103 transitions. [2025-04-30 10:16:34,209 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 68 transitions, 331 flow [2025-04-30 10:16:34,229 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 68 transitions, 329 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-04-30 10:16:34,230 INFO L231 Difference]: Finished difference. Result has 63 places, 44 transitions, 154 flow [2025-04-30 10:16:34,230 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=165, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=154, PETRI_PLACES=63, PETRI_TRANSITIONS=44} [2025-04-30 10:16:34,231 INFO L279 CegarLoopForPetriNet]: 61 programPoint places, 2 predicate places. [2025-04-30 10:16:34,231 INFO L485 AbstractCegarLoop]: Abstraction has has 63 places, 44 transitions, 154 flow [2025-04-30 10:16:34,231 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-30 10:16:34,231 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-30 10:16:34,231 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-30 10:16:34,231 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-04-30 10:16:34,231 INFO L403 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-04-30 10:16:34,232 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-30 10:16:34,232 INFO L85 PathProgramCache]: Analyzing trace with hash -8001605, now seen corresponding path program 8 times [2025-04-30 10:16:34,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-30 10:16:34,232 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882002489] [2025-04-30 10:16:34,232 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-30 10:16:34,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-30 10:16:34,240 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 42 statements into 1 equivalence classes. [2025-04-30 10:16:34,244 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 42 of 42 statements. [2025-04-30 10:16:34,244 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-04-30 10:16:34,244 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-30 10:16:34,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-30 10:16:34,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-30 10:16:34,287 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882002489] [2025-04-30 10:16:34,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1882002489] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-30 10:16:34,287 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-30 10:16:34,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-04-30 10:16:34,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929793195] [2025-04-30 10:16:34,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-30 10:16:34,288 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-04-30 10:16:34,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-30 10:16:34,290 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-04-30 10:16:34,290 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-30 10:16:34,293 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 49 [2025-04-30 10:16:34,293 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 44 transitions, 154 flow. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-30 10:16:34,293 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-30 10:16:34,293 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 49 [2025-04-30 10:16:34,293 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-30 10:16:34,836 INFO L116 PetriNetUnfolderBase]: 8858/13388 cut-off events. [2025-04-30 10:16:34,836 INFO L117 PetriNetUnfolderBase]: For 6237/6410 co-relation queries the response was YES. [2025-04-30 10:16:34,867 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33868 conditions, 13388 events. 8858/13388 cut-off events. For 6237/6410 co-relation queries the response was YES. Maximal size of possible extension queue 691. Compared 87788 event pairs, 5634 based on Foata normal form. 518/13366 useless extension candidates. Maximal degree in co-relation 19373. Up to 7975 conditions per place. [2025-04-30 10:16:34,877 INFO L140 encePairwiseOnDemand]: 47/49 looper letters, 0 selfloop transitions, 0 changer transitions 53/53 dead transitions. [2025-04-30 10:16:34,877 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 53 transitions, 264 flow [2025-04-30 10:16:34,878 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-30 10:16:34,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-04-30 10:16:34,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 93 transitions. [2025-04-30 10:16:34,878 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.6326530612244898 [2025-04-30 10:16:34,878 INFO L175 Difference]: Start difference. First operand has 63 places, 44 transitions, 154 flow. Second operand 3 states and 93 transitions. [2025-04-30 10:16:34,878 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 53 transitions, 264 flow [2025-04-30 10:16:34,881 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 53 transitions, 256 flow, removed 1 selfloop flow, removed 3 redundant places. [2025-04-30 10:16:34,882 INFO L231 Difference]: Finished difference. Result has 60 places, 0 transitions, 0 flow [2025-04-30 10:16:34,882 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=141, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=60, PETRI_TRANSITIONS=0} [2025-04-30 10:16:34,882 INFO L279 CegarLoopForPetriNet]: 61 programPoint places, -1 predicate places. [2025-04-30 10:16:34,882 INFO L485 AbstractCegarLoop]: Abstraction has has 60 places, 0 transitions, 0 flow [2025-04-30 10:16:34,882 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-30 10:16:34,885 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (6 of 7 remaining) [2025-04-30 10:16:34,885 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 7 remaining) [2025-04-30 10:16:34,885 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 7 remaining) [2025-04-30 10:16:34,885 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 7 remaining) [2025-04-30 10:16:34,886 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 7 remaining) [2025-04-30 10:16:34,886 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 7 remaining) [2025-04-30 10:16:34,886 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 7 remaining) [2025-04-30 10:16:34,886 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-04-30 10:16:34,886 INFO L422 BasicCegarLoop]: Path program histogram: [8] [2025-04-30 10:16:34,889 INFO L242 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2025-04-30 10:16:34,889 INFO L171 ceAbstractionStarter]: Computing trace abstraction results [2025-04-30 10:16:34,896 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.04 10:16:34 BasicIcfg [2025-04-30 10:16:34,896 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-04-30 10:16:34,897 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-04-30 10:16:34,897 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-04-30 10:16:34,897 INFO L274 PluginConnector]: Witness Printer initialized [2025-04-30 10:16:34,897 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.04 10:16:26" (3/4) ... [2025-04-30 10:16:34,899 INFO L146 WitnessPrinter]: Generating witness for correct program [2025-04-30 10:16:34,902 INFO L362 RCFGBacktranslator]: Ignoring RootEdge to procedure f0 [2025-04-30 10:16:34,902 INFO L362 RCFGBacktranslator]: Ignoring RootEdge to procedure f1 [2025-04-30 10:16:34,902 INFO L362 RCFGBacktranslator]: Ignoring RootEdge to procedure f2 [2025-04-30 10:16:34,902 INFO L362 RCFGBacktranslator]: Ignoring RootEdge to procedure f3 [2025-04-30 10:16:34,902 INFO L362 RCFGBacktranslator]: Ignoring RootEdge to procedure f4 [2025-04-30 10:16:34,902 INFO L362 RCFGBacktranslator]: Ignoring RootEdge to procedure f5 [2025-04-30 10:16:34,906 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 57 nodes and edges [2025-04-30 10:16:34,906 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 19 nodes and edges [2025-04-30 10:16:34,907 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2025-04-30 10:16:34,907 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2025-04-30 10:16:34,907 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2025-04-30 10:16:34,974 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2025-04-30 10:16:34,975 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2025-04-30 10:16:34,975 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-04-30 10:16:34,976 INFO L158 Benchmark]: Toolchain (without parser) took 9890.25ms. Allocated memory was 142.6MB in the beginning and 1.4GB in the end (delta: 1.3GB). Free memory was 105.0MB in the beginning and 823.8MB in the end (delta: -718.9MB). Peak memory consumption was 573.6MB. Max. memory is 16.1GB. [2025-04-30 10:16:34,977 INFO L158 Benchmark]: CDTParser took 0.26ms. Allocated memory is still 201.3MB. Free memory was 126.6MB in the beginning and 126.3MB in the end (delta: 307.6kB). There was no memory consumed. Max. memory is 16.1GB. [2025-04-30 10:16:34,977 INFO L158 Benchmark]: CACSL2BoogieTranslator took 368.63ms. Allocated memory is still 142.6MB. Free memory was 105.0MB in the beginning and 81.4MB in the end (delta: 23.6MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-04-30 10:16:34,979 INFO L158 Benchmark]: Boogie Procedure Inliner took 45.76ms. Allocated memory is still 142.6MB. Free memory was 81.4MB in the beginning and 78.8MB in the end (delta: 2.7MB). There was no memory consumed. Max. memory is 16.1GB. [2025-04-30 10:16:34,979 INFO L158 Benchmark]: Boogie Preprocessor took 39.78ms. Allocated memory is still 142.6MB. Free memory was 78.8MB in the beginning and 77.0MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. [2025-04-30 10:16:34,979 INFO L158 Benchmark]: RCFGBuilder took 522.26ms. Allocated memory is still 142.6MB. Free memory was 76.6MB in the beginning and 41.3MB in the end (delta: 35.3MB). Peak memory consumption was 41.9MB. Max. memory is 16.1GB. [2025-04-30 10:16:34,979 INFO L158 Benchmark]: TraceAbstraction took 8829.99ms. Allocated memory was 142.6MB in the beginning and 1.4GB in the end (delta: 1.3GB). Free memory was 40.8MB in the beginning and 828.3MB in the end (delta: -787.5MB). Peak memory consumption was 984.7MB. Max. memory is 16.1GB. [2025-04-30 10:16:34,980 INFO L158 Benchmark]: Witness Printer took 78.82ms. Allocated memory is still 1.4GB. Free memory was 828.3MB in the beginning and 823.8MB in the end (delta: 4.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-04-30 10:16:34,981 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26ms. Allocated memory is still 201.3MB. Free memory was 126.6MB in the beginning and 126.3MB in the end (delta: 307.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 368.63ms. Allocated memory is still 142.6MB. Free memory was 105.0MB in the beginning and 81.4MB in the end (delta: 23.6MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 45.76ms. Allocated memory is still 142.6MB. Free memory was 81.4MB in the beginning and 78.8MB in the end (delta: 2.7MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 39.78ms. Allocated memory is still 142.6MB. Free memory was 78.8MB in the beginning and 77.0MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 522.26ms. Allocated memory is still 142.6MB. Free memory was 76.6MB in the beginning and 41.3MB in the end (delta: 35.3MB). Peak memory consumption was 41.9MB. Max. memory is 16.1GB. * TraceAbstraction took 8829.99ms. Allocated memory was 142.6MB in the beginning and 1.4GB in the end (delta: 1.3GB). Free memory was 40.8MB in the beginning and 828.3MB in the end (delta: -787.5MB). Peak memory consumption was 984.7MB. Max. memory is 16.1GB. * Witness Printer took 78.82ms. Allocated memory is still 1.4GB. Free memory was 828.3MB in the beginning and 823.8MB in the end (delta: 4.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 802]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 13 procedures, 84 locations, 83 edges, 7 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 8.7s, OverallIterations: 8, TraceHistogramMax: 1, PathProgramHistogramMax: 8, EmptinessCheckTime: 0.0s, AutomataDifference: 7.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 106 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 99 mSDsluCounter, 7 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 7 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 543 IncrementalHoareTripleChecker+Invalid, 550 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 7 mSolverCounterUnsat, 7 mSDtfsCounter, 543 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 22 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=170occurred in iteration=4, InterpolantAutomatonStates: 24, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 336 NumberOfCodeBlocks, 335 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 328 ConstructedInterpolants, 0 QuantifiedInterpolants, 446 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2025-04-30 10:16:34,996 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE