./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-wmm/safe027_power.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 48c9605d Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/pthread-wmm/safe027_power.opt.i -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3edc5a2d9ce2881b3565fd36253c94b9cf356a0dafd043fa3f9d27823541c09b --- Real Ultimate output --- This is Ultimate 0.3.0-?-48c9605-m [2025-02-08 01:05:48,278 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-08 01:05:48,358 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-02-08 01:05:48,365 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-08 01:05:48,366 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-08 01:05:48,398 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-08 01:05:48,399 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-08 01:05:48,399 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-08 01:05:48,399 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-08 01:05:48,399 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-08 01:05:48,399 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-08 01:05:48,399 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-08 01:05:48,400 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-08 01:05:48,400 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-08 01:05:48,400 INFO L153 SettingsManager]: * Use SBE=true [2025-02-08 01:05:48,400 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-08 01:05:48,400 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-08 01:05:48,400 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-08 01:05:48,400 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-08 01:05:48,400 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-08 01:05:48,400 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-08 01:05:48,400 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-08 01:05:48,400 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-08 01:05:48,400 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-08 01:05:48,400 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-08 01:05:48,400 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-08 01:05:48,400 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-08 01:05:48,401 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-08 01:05:48,401 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-08 01:05:48,401 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-08 01:05:48,401 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-08 01:05:48,401 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-08 01:05:48,401 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 01:05:48,401 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-08 01:05:48,401 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-08 01:05:48,401 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-08 01:05:48,401 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-08 01:05:48,401 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-08 01:05:48,401 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-08 01:05:48,401 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-08 01:05:48,401 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-08 01:05:48,401 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-08 01:05:48,401 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-08 01:05:48,401 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3edc5a2d9ce2881b3565fd36253c94b9cf356a0dafd043fa3f9d27823541c09b [2025-02-08 01:05:48,697 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-08 01:05:48,708 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-08 01:05:48,710 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-08 01:05:48,711 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-08 01:05:48,711 INFO L274 PluginConnector]: CDTParser initialized [2025-02-08 01:05:48,714 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/safe027_power.opt.i [2025-02-08 01:05:49,944 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/1df33b000/c4aed1f277964129a8e662aad4865448/FLAG6fa1ae955 [2025-02-08 01:05:50,198 INFO L384 CDTParser]: Found 1 translation units. [2025-02-08 01:05:50,199 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe027_power.opt.i [2025-02-08 01:05:50,209 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/1df33b000/c4aed1f277964129a8e662aad4865448/FLAG6fa1ae955 [2025-02-08 01:05:50,224 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/1df33b000/c4aed1f277964129a8e662aad4865448 [2025-02-08 01:05:50,226 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-08 01:05:50,227 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-08 01:05:50,228 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-08 01:05:50,228 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-08 01:05:50,232 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-08 01:05:50,232 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 01:05:50" (1/1) ... [2025-02-08 01:05:50,235 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a87a9a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:05:50, skipping insertion in model container [2025-02-08 01:05:50,235 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 01:05:50" (1/1) ... [2025-02-08 01:05:50,278 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-08 01:05:50,396 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe027_power.opt.i[994,1007] [2025-02-08 01:05:50,606 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 01:05:50,620 INFO L200 MainTranslator]: Completed pre-run [2025-02-08 01:05:50,629 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe027_power.opt.i[994,1007] [2025-02-08 01:05:50,683 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 01:05:50,713 INFO L204 MainTranslator]: Completed translation [2025-02-08 01:05:50,715 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:05:50 WrapperNode [2025-02-08 01:05:50,715 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-08 01:05:50,716 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-08 01:05:50,716 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-08 01:05:50,716 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-08 01:05:50,722 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:05:50" (1/1) ... [2025-02-08 01:05:50,735 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:05:50" (1/1) ... [2025-02-08 01:05:50,753 INFO L138 Inliner]: procedures = 176, calls = 72, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 179 [2025-02-08 01:05:50,757 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-08 01:05:50,757 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-08 01:05:50,757 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-08 01:05:50,757 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-08 01:05:50,764 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:05:50" (1/1) ... [2025-02-08 01:05:50,764 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:05:50" (1/1) ... [2025-02-08 01:05:50,774 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:05:50" (1/1) ... [2025-02-08 01:05:50,794 INFO L175 MemorySlicer]: Split 26 memory accesses to 2 slices as follows [2, 24]. 92 percent of accesses are in the largest equivalence class. The 3 initializations are split as follows [2, 1]. The 8 writes are split as follows [0, 8]. [2025-02-08 01:05:50,794 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:05:50" (1/1) ... [2025-02-08 01:05:50,794 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:05:50" (1/1) ... [2025-02-08 01:05:50,801 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:05:50" (1/1) ... [2025-02-08 01:05:50,803 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:05:50" (1/1) ... [2025-02-08 01:05:50,805 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:05:50" (1/1) ... [2025-02-08 01:05:50,806 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:05:50" (1/1) ... [2025-02-08 01:05:50,814 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-08 01:05:50,815 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-08 01:05:50,815 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-08 01:05:50,815 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-08 01:05:50,816 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:05:50" (1/1) ... [2025-02-08 01:05:50,819 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 01:05:50,832 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 01:05:50,844 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-02-08 01:05:50,846 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-02-08 01:05:50,872 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-02-08 01:05:50,872 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-02-08 01:05:50,872 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-02-08 01:05:50,872 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-02-08 01:05:50,872 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-02-08 01:05:50,872 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-08 01:05:50,872 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2025-02-08 01:05:50,872 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2025-02-08 01:05:50,872 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2025-02-08 01:05:50,872 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2025-02-08 01:05:50,872 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2025-02-08 01:05:50,872 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2025-02-08 01:05:50,872 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2025-02-08 01:05:50,872 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2025-02-08 01:05:50,872 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-08 01:05:50,872 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-02-08 01:05:50,872 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-02-08 01:05:50,872 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-08 01:05:50,872 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-08 01:05:50,875 WARN L227 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-02-08 01:05:51,013 INFO L257 CfgBuilder]: Building ICFG [2025-02-08 01:05:51,015 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-08 01:05:51,472 INFO L304 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-02-08 01:05:51,472 INFO L308 CfgBuilder]: Performing block encoding [2025-02-08 01:05:51,798 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-08 01:05:51,799 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-08 01:05:51,799 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 01:05:51 BoogieIcfgContainer [2025-02-08 01:05:51,799 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-08 01:05:51,800 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-08 01:05:51,800 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-08 01:05:51,804 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-08 01:05:51,804 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.02 01:05:50" (1/3) ... [2025-02-08 01:05:51,804 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1911be6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 01:05:51, skipping insertion in model container [2025-02-08 01:05:51,804 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:05:50" (2/3) ... [2025-02-08 01:05:51,804 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1911be6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 01:05:51, skipping insertion in model container [2025-02-08 01:05:51,804 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 01:05:51" (3/3) ... [2025-02-08 01:05:51,805 INFO L128 eAbstractionObserver]: Analyzing ICFG safe027_power.opt.i [2025-02-08 01:05:51,816 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-08 01:05:51,819 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG safe027_power.opt.i that has 5 procedures, 46 locations, 1 initial locations, 0 loop locations, and 2 error locations. [2025-02-08 01:05:51,819 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-02-08 01:05:51,885 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-02-08 01:05:51,906 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 58 places, 46 transitions, 108 flow [2025-02-08 01:05:51,928 INFO L124 PetriNetUnfolderBase]: 1/42 cut-off events. [2025-02-08 01:05:51,933 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-08 01:05:51,935 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55 conditions, 42 events. 1/42 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 87 event pairs, 0 based on Foata normal form. 0/39 useless extension candidates. Maximal degree in co-relation 46. Up to 2 conditions per place. [2025-02-08 01:05:51,935 INFO L82 GeneralOperation]: Start removeDead. Operand has 58 places, 46 transitions, 108 flow [2025-02-08 01:05:51,940 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 54 places, 42 transitions, 96 flow [2025-02-08 01:05:51,948 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-08 01:05:51,958 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@b789ee3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-08 01:05:51,959 INFO L334 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2025-02-08 01:05:51,963 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-08 01:05:51,963 INFO L124 PetriNetUnfolderBase]: 0/11 cut-off events. [2025-02-08 01:05:51,964 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-08 01:05:51,964 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:05:51,964 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2025-02-08 01:05:51,964 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting P1Err0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-02-08 01:05:51,968 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:05:51,968 INFO L85 PathProgramCache]: Analyzing trace with hash 755487091, now seen corresponding path program 1 times [2025-02-08 01:05:51,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:05:51,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349757502] [2025-02-08 01:05:51,974 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 01:05:51,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:05:52,043 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-08 01:05:52,076 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-08 01:05:52,077 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:05:52,077 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:05:52,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:05:52,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:05:52,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1349757502] [2025-02-08 01:05:52,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1349757502] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:05:52,393 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 01:05:52,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-02-08 01:05:52,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028712550] [2025-02-08 01:05:52,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:05:52,399 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 01:05:52,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:05:52,418 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 01:05:52,418 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 01:05:52,419 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2025-02-08 01:05:52,423 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 42 transitions, 96 flow. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:05:52,423 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:05:52,423 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2025-02-08 01:05:52,423 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:05:56,434 INFO L124 PetriNetUnfolderBase]: 23617/31809 cut-off events. [2025-02-08 01:05:56,434 INFO L125 PetriNetUnfolderBase]: For 201/201 co-relation queries the response was YES. [2025-02-08 01:05:56,493 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63499 conditions, 31809 events. 23617/31809 cut-off events. For 201/201 co-relation queries the response was YES. Maximal size of possible extension queue 1091. Compared 186109 event pairs, 3513 based on Foata normal form. 900/32519 useless extension candidates. Maximal degree in co-relation 63487. Up to 26201 conditions per place. [2025-02-08 01:05:56,606 INFO L140 encePairwiseOnDemand]: 42/46 looper letters, 54 selfloop transitions, 2 changer transitions 2/65 dead transitions. [2025-02-08 01:05:56,606 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 65 transitions, 264 flow [2025-02-08 01:05:56,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-08 01:05:56,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-08 01:05:56,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 94 transitions. [2025-02-08 01:05:56,614 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6811594202898551 [2025-02-08 01:05:56,615 INFO L175 Difference]: Start difference. First operand has 54 places, 42 transitions, 96 flow. Second operand 3 states and 94 transitions. [2025-02-08 01:05:56,615 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 65 transitions, 264 flow [2025-02-08 01:05:56,620 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 65 transitions, 258 flow, removed 0 selfloop flow, removed 4 redundant places. [2025-02-08 01:05:56,622 INFO L231 Difference]: Finished difference. Result has 51 places, 39 transitions, 90 flow [2025-02-08 01:05:56,623 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=90, PETRI_PLACES=51, PETRI_TRANSITIONS=39} [2025-02-08 01:05:56,625 INFO L279 CegarLoopForPetriNet]: 54 programPoint places, -3 predicate places. [2025-02-08 01:05:56,625 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 39 transitions, 90 flow [2025-02-08 01:05:56,626 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:05:56,626 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:05:56,626 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:05:56,626 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-08 01:05:56,626 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-02-08 01:05:56,627 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:05:56,627 INFO L85 PathProgramCache]: Analyzing trace with hash 1789185186, now seen corresponding path program 1 times [2025-02-08 01:05:56,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:05:56,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [148840006] [2025-02-08 01:05:56,627 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 01:05:56,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:05:56,649 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-02-08 01:05:56,688 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-02-08 01:05:56,692 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:05:56,693 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:05:56,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:05:56,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:05:56,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [148840006] [2025-02-08 01:05:56,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [148840006] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:05:56,918 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 01:05:56,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-08 01:05:56,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831450861] [2025-02-08 01:05:56,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:05:56,919 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 01:05:56,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:05:56,919 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 01:05:56,919 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-08 01:05:56,922 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 46 [2025-02-08 01:05:56,922 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 39 transitions, 90 flow. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:05:56,922 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:05:56,922 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 46 [2025-02-08 01:05:56,923 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:06:02,002 INFO L124 PetriNetUnfolderBase]: 32567/43960 cut-off events. [2025-02-08 01:06:02,003 INFO L125 PetriNetUnfolderBase]: For 2124/2124 co-relation queries the response was YES. [2025-02-08 01:06:02,102 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89722 conditions, 43960 events. 32567/43960 cut-off events. For 2124/2124 co-relation queries the response was YES. Maximal size of possible extension queue 1421. Compared 263514 event pairs, 3582 based on Foata normal form. 0/43204 useless extension candidates. Maximal degree in co-relation 89712. Up to 26651 conditions per place. [2025-02-08 01:06:02,195 INFO L140 encePairwiseOnDemand]: 40/46 looper letters, 54 selfloop transitions, 2 changer transitions 85/146 dead transitions. [2025-02-08 01:06:02,196 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 146 transitions, 604 flow [2025-02-08 01:06:02,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-08 01:06:02,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-02-08 01:06:02,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 215 transitions. [2025-02-08 01:06:02,197 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5842391304347826 [2025-02-08 01:06:02,198 INFO L175 Difference]: Start difference. First operand has 51 places, 39 transitions, 90 flow. Second operand 8 states and 215 transitions. [2025-02-08 01:06:02,198 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 146 transitions, 604 flow [2025-02-08 01:06:02,199 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 146 transitions, 588 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-02-08 01:06:02,202 INFO L231 Difference]: Finished difference. Result has 60 places, 38 transitions, 100 flow [2025-02-08 01:06:02,203 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=100, PETRI_PLACES=60, PETRI_TRANSITIONS=38} [2025-02-08 01:06:02,203 INFO L279 CegarLoopForPetriNet]: 54 programPoint places, 6 predicate places. [2025-02-08 01:06:02,203 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 38 transitions, 100 flow [2025-02-08 01:06:02,204 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:06:02,204 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:06:02,204 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:06:02,204 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-08 01:06:02,204 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-02-08 01:06:02,205 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:06:02,205 INFO L85 PathProgramCache]: Analyzing trace with hash -1636519517, now seen corresponding path program 1 times [2025-02-08 01:06:02,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:06:02,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012170410] [2025-02-08 01:06:02,205 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 01:06:02,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:06:02,218 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-02-08 01:06:02,238 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-02-08 01:06:02,241 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:06:02,242 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:06:02,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:06:02,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:06:02,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012170410] [2025-02-08 01:06:02,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1012170410] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:06:02,576 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 01:06:02,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-08 01:06:02,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214496536] [2025-02-08 01:06:02,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:06:02,576 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-08 01:06:02,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:06:02,577 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-08 01:06:02,577 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-08 01:06:02,580 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 46 [2025-02-08 01:06:02,580 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 38 transitions, 100 flow. Second operand has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:06:02,581 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:06:02,581 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 46 [2025-02-08 01:06:02,581 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:06:07,991 INFO L124 PetriNetUnfolderBase]: 34327/46207 cut-off events. [2025-02-08 01:06:07,995 INFO L125 PetriNetUnfolderBase]: For 4602/4602 co-relation queries the response was YES. [2025-02-08 01:06:08,151 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99104 conditions, 46207 events. 34327/46207 cut-off events. For 4602/4602 co-relation queries the response was YES. Maximal size of possible extension queue 1473. Compared 265081 event pairs, 4477 based on Foata normal form. 750/46922 useless extension candidates. Maximal degree in co-relation 99089. Up to 20081 conditions per place. [2025-02-08 01:06:08,220 INFO L140 encePairwiseOnDemand]: 40/46 looper letters, 59 selfloop transitions, 3 changer transitions 73/140 dead transitions. [2025-02-08 01:06:08,225 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 140 transitions, 589 flow [2025-02-08 01:06:08,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-08 01:06:08,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-02-08 01:06:08,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 209 transitions. [2025-02-08 01:06:08,231 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5679347826086957 [2025-02-08 01:06:08,231 INFO L175 Difference]: Start difference. First operand has 60 places, 38 transitions, 100 flow. Second operand 8 states and 209 transitions. [2025-02-08 01:06:08,231 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 140 transitions, 589 flow [2025-02-08 01:06:09,543 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 140 transitions, 567 flow, removed 8 selfloop flow, removed 6 redundant places. [2025-02-08 01:06:09,548 INFO L231 Difference]: Finished difference. Result has 61 places, 38 transitions, 110 flow [2025-02-08 01:06:09,548 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=110, PETRI_PLACES=61, PETRI_TRANSITIONS=38} [2025-02-08 01:06:09,549 INFO L279 CegarLoopForPetriNet]: 54 programPoint places, 7 predicate places. [2025-02-08 01:06:09,549 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 38 transitions, 110 flow [2025-02-08 01:06:09,549 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:06:09,549 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:06:09,549 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:06:09,549 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-02-08 01:06:09,549 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-02-08 01:06:09,550 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:06:09,551 INFO L85 PathProgramCache]: Analyzing trace with hash 602188964, now seen corresponding path program 1 times [2025-02-08 01:06:09,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:06:09,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453197665] [2025-02-08 01:06:09,554 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 01:06:09,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:06:09,580 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-02-08 01:06:09,602 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-02-08 01:06:09,602 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:06:09,602 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:06:10,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:06:10,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:06:10,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453197665] [2025-02-08 01:06:10,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [453197665] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:06:10,197 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 01:06:10,197 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-08 01:06:10,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145839323] [2025-02-08 01:06:10,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:06:10,197 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 01:06:10,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:06:10,198 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 01:06:10,198 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-08 01:06:10,201 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 46 [2025-02-08 01:06:10,201 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 38 transitions, 110 flow. Second operand has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:06:10,201 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:06:10,201 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 46 [2025-02-08 01:06:10,201 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:06:13,450 INFO L124 PetriNetUnfolderBase]: 19377/26407 cut-off events. [2025-02-08 01:06:13,451 INFO L125 PetriNetUnfolderBase]: For 7802/7802 co-relation queries the response was YES. [2025-02-08 01:06:13,578 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59492 conditions, 26407 events. 19377/26407 cut-off events. For 7802/7802 co-relation queries the response was YES. Maximal size of possible extension queue 785. Compared 147651 event pairs, 2567 based on Foata normal form. 600/27005 useless extension candidates. Maximal degree in co-relation 59475. Up to 19366 conditions per place. [2025-02-08 01:06:13,643 INFO L140 encePairwiseOnDemand]: 41/46 looper letters, 50 selfloop transitions, 2 changer transitions 57/114 dead transitions. [2025-02-08 01:06:13,644 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 114 transitions, 504 flow [2025-02-08 01:06:13,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-08 01:06:13,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-02-08 01:06:13,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 174 transitions. [2025-02-08 01:06:13,645 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5403726708074534 [2025-02-08 01:06:13,645 INFO L175 Difference]: Start difference. First operand has 61 places, 38 transitions, 110 flow. Second operand 7 states and 174 transitions. [2025-02-08 01:06:13,645 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 114 transitions, 504 flow [2025-02-08 01:06:14,112 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 114 transitions, 467 flow, removed 12 selfloop flow, removed 8 redundant places. [2025-02-08 01:06:14,113 INFO L231 Difference]: Finished difference. Result has 60 places, 38 transitions, 106 flow [2025-02-08 01:06:14,113 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=106, PETRI_PLACES=60, PETRI_TRANSITIONS=38} [2025-02-08 01:06:14,113 INFO L279 CegarLoopForPetriNet]: 54 programPoint places, 6 predicate places. [2025-02-08 01:06:14,113 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 38 transitions, 106 flow [2025-02-08 01:06:14,114 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:06:14,114 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:06:14,114 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:06:14,114 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-02-08 01:06:14,114 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-02-08 01:06:14,114 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:06:14,114 INFO L85 PathProgramCache]: Analyzing trace with hash -1383904179, now seen corresponding path program 1 times [2025-02-08 01:06:14,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:06:14,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972726403] [2025-02-08 01:06:14,115 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 01:06:14,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:06:14,124 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-02-08 01:06:14,158 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-02-08 01:06:14,161 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:06:14,162 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:06:15,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:06:15,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:06:15,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972726403] [2025-02-08 01:06:15,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [972726403] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:06:15,750 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 01:06:15,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-08 01:06:15,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709174291] [2025-02-08 01:06:15,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:06:15,750 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-08 01:06:15,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:06:15,751 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-08 01:06:15,751 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-02-08 01:06:15,765 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 46 [2025-02-08 01:06:15,765 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 38 transitions, 106 flow. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:06:15,765 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:06:15,765 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 46 [2025-02-08 01:06:15,765 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:06:18,615 INFO L124 PetriNetUnfolderBase]: 20451/27709 cut-off events. [2025-02-08 01:06:18,616 INFO L125 PetriNetUnfolderBase]: For 5772/5772 co-relation queries the response was YES. [2025-02-08 01:06:18,750 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61249 conditions, 27709 events. 20451/27709 cut-off events. For 5772/5772 co-relation queries the response was YES. Maximal size of possible extension queue 735. Compared 149656 event pairs, 3936 based on Foata normal form. 598/28306 useless extension candidates. Maximal degree in co-relation 61233. Up to 18155 conditions per place. [2025-02-08 01:06:18,830 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 82 selfloop transitions, 9 changer transitions 81/177 dead transitions. [2025-02-08 01:06:18,831 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 177 transitions, 768 flow [2025-02-08 01:06:18,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-02-08 01:06:18,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2025-02-08 01:06:18,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 274 transitions. [2025-02-08 01:06:18,834 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.541501976284585 [2025-02-08 01:06:18,838 INFO L175 Difference]: Start difference. First operand has 60 places, 38 transitions, 106 flow. Second operand 11 states and 274 transitions. [2025-02-08 01:06:18,838 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 177 transitions, 768 flow [2025-02-08 01:06:19,228 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 177 transitions, 742 flow, removed 10 selfloop flow, removed 6 redundant places. [2025-02-08 01:06:19,230 INFO L231 Difference]: Finished difference. Result has 69 places, 45 transitions, 182 flow [2025-02-08 01:06:19,231 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=182, PETRI_PLACES=69, PETRI_TRANSITIONS=45} [2025-02-08 01:06:19,232 INFO L279 CegarLoopForPetriNet]: 54 programPoint places, 15 predicate places. [2025-02-08 01:06:19,233 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 45 transitions, 182 flow [2025-02-08 01:06:19,233 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:06:19,234 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:06:19,234 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] [2025-02-08 01:06:19,234 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-02-08 01:06:19,234 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-02-08 01:06:19,234 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:06:19,234 INFO L85 PathProgramCache]: Analyzing trace with hash 277728803, now seen corresponding path program 1 times [2025-02-08 01:06:19,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:06:19,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224529592] [2025-02-08 01:06:19,235 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 01:06:19,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:06:19,251 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-02-08 01:06:19,292 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-02-08 01:06:19,292 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:06:19,292 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:06:19,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:06:19,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:06:19,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [224529592] [2025-02-08 01:06:19,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [224529592] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:06:19,418 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 01:06:19,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-08 01:06:19,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145952019] [2025-02-08 01:06:19,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:06:19,419 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 01:06:19,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:06:19,419 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 01:06:19,419 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 01:06:19,419 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2025-02-08 01:06:19,419 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 45 transitions, 182 flow. Second operand has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:06:19,420 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:06:19,420 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2025-02-08 01:06:19,420 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:06:21,847 INFO L124 PetriNetUnfolderBase]: 16317/22711 cut-off events. [2025-02-08 01:06:21,848 INFO L125 PetriNetUnfolderBase]: For 27423/27423 co-relation queries the response was YES. [2025-02-08 01:06:21,984 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67278 conditions, 22711 events. 16317/22711 cut-off events. For 27423/27423 co-relation queries the response was YES. Maximal size of possible extension queue 751. Compared 129717 event pairs, 1893 based on Foata normal form. 875/23582 useless extension candidates. Maximal degree in co-relation 67257. Up to 12311 conditions per place. [2025-02-08 01:06:22,066 INFO L140 encePairwiseOnDemand]: 39/46 looper letters, 82 selfloop transitions, 6 changer transitions 1/95 dead transitions. [2025-02-08 01:06:22,066 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 95 transitions, 572 flow [2025-02-08 01:06:22,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 01:06:22,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-08 01:06:22,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 116 transitions. [2025-02-08 01:06:22,068 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6304347826086957 [2025-02-08 01:06:22,068 INFO L175 Difference]: Start difference. First operand has 69 places, 45 transitions, 182 flow. Second operand 4 states and 116 transitions. [2025-02-08 01:06:22,068 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 95 transitions, 572 flow [2025-02-08 01:06:22,151 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 95 transitions, 547 flow, removed 4 selfloop flow, removed 5 redundant places. [2025-02-08 01:06:22,152 INFO L231 Difference]: Finished difference. Result has 63 places, 49 transitions, 209 flow [2025-02-08 01:06:22,153 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=167, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=209, PETRI_PLACES=63, PETRI_TRANSITIONS=49} [2025-02-08 01:06:22,154 INFO L279 CegarLoopForPetriNet]: 54 programPoint places, 9 predicate places. [2025-02-08 01:06:22,154 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 49 transitions, 209 flow [2025-02-08 01:06:22,154 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:06:22,155 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:06:22,155 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:06:22,155 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-02-08 01:06:22,156 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-02-08 01:06:22,156 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:06:22,156 INFO L85 PathProgramCache]: Analyzing trace with hash 1529959666, now seen corresponding path program 1 times [2025-02-08 01:06:22,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:06:22,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809821910] [2025-02-08 01:06:22,156 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 01:06:22,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:06:22,174 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 26 statements into 1 equivalence classes. [2025-02-08 01:06:22,237 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 26 of 26 statements. [2025-02-08 01:06:22,237 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:06:22,237 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:06:22,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:06:22,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:06:22,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809821910] [2025-02-08 01:06:22,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [809821910] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:06:22,393 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 01:06:22,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-08 01:06:22,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964405247] [2025-02-08 01:06:22,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:06:22,393 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 01:06:22,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:06:22,394 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 01:06:22,394 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-02-08 01:06:22,394 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2025-02-08 01:06:22,394 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 49 transitions, 209 flow. Second operand has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:06:22,395 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:06:22,395 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2025-02-08 01:06:22,395 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:06:24,573 INFO L124 PetriNetUnfolderBase]: 11774/16581 cut-off events. [2025-02-08 01:06:24,573 INFO L125 PetriNetUnfolderBase]: For 21483/21483 co-relation queries the response was YES. [2025-02-08 01:06:24,650 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51400 conditions, 16581 events. 11774/16581 cut-off events. For 21483/21483 co-relation queries the response was YES. Maximal size of possible extension queue 524. Compared 90890 event pairs, 926 based on Foata normal form. 740/17317 useless extension candidates. Maximal degree in co-relation 51380. Up to 6757 conditions per place. [2025-02-08 01:06:24,705 INFO L140 encePairwiseOnDemand]: 39/46 looper letters, 105 selfloop transitions, 10 changer transitions 1/122 dead transitions. [2025-02-08 01:06:24,705 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 122 transitions, 759 flow [2025-02-08 01:06:24,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 01:06:24,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-08 01:06:24,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 148 transitions. [2025-02-08 01:06:24,707 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6434782608695652 [2025-02-08 01:06:24,707 INFO L175 Difference]: Start difference. First operand has 63 places, 49 transitions, 209 flow. Second operand 5 states and 148 transitions. [2025-02-08 01:06:24,707 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 122 transitions, 759 flow [2025-02-08 01:06:24,715 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 122 transitions, 748 flow, removed 1 selfloop flow, removed 2 redundant places. [2025-02-08 01:06:24,717 INFO L231 Difference]: Finished difference. Result has 67 places, 53 transitions, 261 flow [2025-02-08 01:06:24,718 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=200, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=261, PETRI_PLACES=67, PETRI_TRANSITIONS=53} [2025-02-08 01:06:24,720 INFO L279 CegarLoopForPetriNet]: 54 programPoint places, 13 predicate places. [2025-02-08 01:06:24,720 INFO L471 AbstractCegarLoop]: Abstraction has has 67 places, 53 transitions, 261 flow [2025-02-08 01:06:24,720 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:06:24,720 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:06:24,720 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] [2025-02-08 01:06:24,720 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-02-08 01:06:24,721 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-02-08 01:06:24,721 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:06:24,722 INFO L85 PathProgramCache]: Analyzing trace with hash 1867226203, now seen corresponding path program 1 times [2025-02-08 01:06:24,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:06:24,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929465531] [2025-02-08 01:06:24,722 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 01:06:24,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:06:24,755 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 28 statements into 1 equivalence classes. [2025-02-08 01:06:24,923 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 28 of 28 statements. [2025-02-08 01:06:24,923 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:06:24,923 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:06:25,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:06:25,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:06:25,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929465531] [2025-02-08 01:06:25,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [929465531] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:06:25,087 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 01:06:25,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-08 01:06:25,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159813813] [2025-02-08 01:06:25,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:06:25,087 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-08 01:06:25,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:06:25,088 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-08 01:06:25,088 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2025-02-08 01:06:25,088 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2025-02-08 01:06:25,088 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 53 transitions, 261 flow. Second operand has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:06:25,088 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:06:25,088 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2025-02-08 01:06:25,088 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand