./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-wmm/safe004_tso.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/safe004_tso.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 28abced7878c2be916ea5a54f12b603c21b6525f16f4a0aadbf776b589e0bc49 --- Real Ultimate output --- This is Ultimate 0.3.0-?-48c9605-m [2025-02-08 01:03:52,796 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-08 01:03:52,833 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-02-08 01:03:52,836 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-08 01:03:52,836 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-08 01:03:52,857 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-08 01:03:52,858 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-08 01:03:52,859 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-08 01:03:52,859 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-08 01:03:52,859 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-08 01:03:52,859 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-08 01:03:52,860 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-08 01:03:52,860 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-08 01:03:52,860 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-08 01:03:52,860 INFO L153 SettingsManager]: * Use SBE=true [2025-02-08 01:03:52,860 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-08 01:03:52,860 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-08 01:03:52,860 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-08 01:03:52,860 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-08 01:03:52,860 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-08 01:03:52,860 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-08 01:03:52,861 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-08 01:03:52,861 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-08 01:03:52,861 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-08 01:03:52,861 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-08 01:03:52,861 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-08 01:03:52,861 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-08 01:03:52,861 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-08 01:03:52,861 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-08 01:03:52,861 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-08 01:03:52,861 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-08 01:03:52,861 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-08 01:03:52,861 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 01:03:52,861 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-08 01:03:52,861 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-08 01:03:52,861 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-08 01:03:52,861 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-08 01:03:52,861 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-08 01:03:52,861 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-08 01:03:52,861 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-08 01:03:52,861 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-08 01:03:52,861 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-08 01:03:52,861 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-08 01:03:52,861 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 -> 28abced7878c2be916ea5a54f12b603c21b6525f16f4a0aadbf776b589e0bc49 [2025-02-08 01:03:53,084 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-08 01:03:53,090 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-08 01:03:53,092 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-08 01:03:53,093 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-08 01:03:53,093 INFO L274 PluginConnector]: CDTParser initialized [2025-02-08 01:03:53,094 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/safe004_tso.i [2025-02-08 01:03:54,222 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/17e725c40/d15b22c88ed64e09b1886975ae03e302/FLAGc99ff59db [2025-02-08 01:03:54,510 INFO L384 CDTParser]: Found 1 translation units. [2025-02-08 01:03:54,512 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe004_tso.i [2025-02-08 01:03:54,525 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/17e725c40/d15b22c88ed64e09b1886975ae03e302/FLAGc99ff59db [2025-02-08 01:03:54,785 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/17e725c40/d15b22c88ed64e09b1886975ae03e302 [2025-02-08 01:03:54,787 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-08 01:03:54,789 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-08 01:03:54,790 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-08 01:03:54,790 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-08 01:03:54,794 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-08 01:03:54,794 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 01:03:54" (1/1) ... [2025-02-08 01:03:54,795 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ad69ff7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:03:54, skipping insertion in model container [2025-02-08 01:03:54,797 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 01:03:54" (1/1) ... [2025-02-08 01:03:54,825 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-08 01:03:54,954 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/safe004_tso.i[945,958] [2025-02-08 01:03:55,106 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 01:03:55,115 INFO L200 MainTranslator]: Completed pre-run [2025-02-08 01:03:55,123 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/safe004_tso.i[945,958] [2025-02-08 01:03:55,159 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 01:03:55,188 INFO L204 MainTranslator]: Completed translation [2025-02-08 01:03:55,189 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:03:55 WrapperNode [2025-02-08 01:03:55,190 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-08 01:03:55,191 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-08 01:03:55,191 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-08 01:03:55,191 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-08 01:03:55,195 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:03:55" (1/1) ... [2025-02-08 01:03:55,206 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:03:55" (1/1) ... [2025-02-08 01:03:55,227 INFO L138 Inliner]: procedures = 175, calls = 41, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 57 [2025-02-08 01:03:55,227 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-08 01:03:55,228 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-08 01:03:55,228 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-08 01:03:55,228 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-08 01:03:55,232 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:03:55" (1/1) ... [2025-02-08 01:03:55,233 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:03:55" (1/1) ... [2025-02-08 01:03:55,234 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:03:55" (1/1) ... [2025-02-08 01:03:55,241 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2025-02-08 01:03:55,242 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:03:55" (1/1) ... [2025-02-08 01:03:55,242 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:03:55" (1/1) ... [2025-02-08 01:03:55,245 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:03:55" (1/1) ... [2025-02-08 01:03:55,245 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:03:55" (1/1) ... [2025-02-08 01:03:55,246 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:03:55" (1/1) ... [2025-02-08 01:03:55,247 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:03:55" (1/1) ... [2025-02-08 01:03:55,248 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-08 01:03:55,248 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-08 01:03:55,249 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-08 01:03:55,249 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-08 01:03:55,249 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:03:55" (1/1) ... [2025-02-08 01:03:55,253 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 01:03:55,262 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 01:03:55,272 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 01:03:55,274 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 01:03:55,289 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-02-08 01:03:55,290 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-08 01:03:55,290 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2025-02-08 01:03:55,290 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2025-02-08 01:03:55,290 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2025-02-08 01:03:55,290 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2025-02-08 01:03:55,290 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2025-02-08 01:03:55,290 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2025-02-08 01:03:55,290 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-08 01:03:55,290 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-02-08 01:03:55,290 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-08 01:03:55,290 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-08 01:03:55,291 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 01:03:55,382 INFO L257 CfgBuilder]: Building ICFG [2025-02-08 01:03:55,383 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-08 01:03:55,503 INFO L304 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-02-08 01:03:55,503 INFO L308 CfgBuilder]: Performing block encoding [2025-02-08 01:03:55,560 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-08 01:03:55,560 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-08 01:03:55,560 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 01:03:55 BoogieIcfgContainer [2025-02-08 01:03:55,560 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-08 01:03:55,565 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-08 01:03:55,565 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-08 01:03:55,568 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-08 01:03:55,568 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.02 01:03:54" (1/3) ... [2025-02-08 01:03:55,570 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d0c5eda and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 01:03:55, skipping insertion in model container [2025-02-08 01:03:55,570 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:03:55" (2/3) ... [2025-02-08 01:03:55,570 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d0c5eda and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 01:03:55, skipping insertion in model container [2025-02-08 01:03:55,570 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 01:03:55" (3/3) ... [2025-02-08 01:03:55,571 INFO L128 eAbstractionObserver]: Analyzing ICFG safe004_tso.i [2025-02-08 01:03:55,581 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-08 01:03:55,582 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG safe004_tso.i that has 4 procedures, 38 locations, 1 initial locations, 0 loop locations, and 1 error locations. [2025-02-08 01:03:55,582 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-02-08 01:03:55,620 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-02-08 01:03:55,656 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 47 places, 38 transitions, 88 flow [2025-02-08 01:03:55,677 INFO L124 PetriNetUnfolderBase]: 1/35 cut-off events. [2025-02-08 01:03:55,681 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-08 01:03:55,688 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45 conditions, 35 events. 1/35 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 64 event pairs, 0 based on Foata normal form. 0/33 useless extension candidates. Maximal degree in co-relation 37. Up to 2 conditions per place. [2025-02-08 01:03:55,689 INFO L82 GeneralOperation]: Start removeDead. Operand has 47 places, 38 transitions, 88 flow [2025-02-08 01:03:55,692 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 42 places, 32 transitions, 73 flow [2025-02-08 01:03:55,698 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-08 01:03:55,708 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;@31fc50b3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-08 01:03:55,708 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2025-02-08 01:03:55,716 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-08 01:03:55,716 INFO L124 PetriNetUnfolderBase]: 0/31 cut-off events. [2025-02-08 01:03:55,716 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-08 01:03:55,716 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:03:55,717 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:03:55,717 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-08 01:03:55,722 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:03:55,723 INFO L85 PathProgramCache]: Analyzing trace with hash -2089016846, now seen corresponding path program 1 times [2025-02-08 01:03:55,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:03:55,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620077653] [2025-02-08 01:03:55,728 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 01:03:55,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:03:55,785 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-02-08 01:03:55,819 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-02-08 01:03:55,821 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:03:55,822 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:03:56,191 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 01:03:56,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:03:56,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1620077653] [2025-02-08 01:03:56,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1620077653] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:03:56,192 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 01:03:56,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-08 01:03:56,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414974534] [2025-02-08 01:03:56,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:03:56,198 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 01:03:56,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:03:56,214 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 01:03:56,214 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-08 01:03:56,222 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 38 [2025-02-08 01:03:56,224 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 32 transitions, 73 flow. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 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 01:03:56,225 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:03:56,225 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 38 [2025-02-08 01:03:56,226 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:03:57,052 INFO L124 PetriNetUnfolderBase]: 6616/9567 cut-off events. [2025-02-08 01:03:57,053 INFO L125 PetriNetUnfolderBase]: For 42/42 co-relation queries the response was YES. [2025-02-08 01:03:57,069 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19163 conditions, 9567 events. 6616/9567 cut-off events. For 42/42 co-relation queries the response was YES. Maximal size of possible extension queue 385. Compared 52364 event pairs, 3202 based on Foata normal form. 279/9832 useless extension candidates. Maximal degree in co-relation 19152. Up to 5889 conditions per place. [2025-02-08 01:03:57,093 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 46 selfloop transitions, 7 changer transitions 63/120 dead transitions. [2025-02-08 01:03:57,094 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 120 transitions, 487 flow [2025-02-08 01:03:57,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-08 01:03:57,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-02-08 01:03:57,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 167 transitions. [2025-02-08 01:03:57,104 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6278195488721805 [2025-02-08 01:03:57,106 INFO L175 Difference]: Start difference. First operand has 42 places, 32 transitions, 73 flow. Second operand 7 states and 167 transitions. [2025-02-08 01:03:57,106 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 120 transitions, 487 flow [2025-02-08 01:03:57,112 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 120 transitions, 482 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-02-08 01:03:57,115 INFO L231 Difference]: Finished difference. Result has 51 places, 38 transitions, 156 flow [2025-02-08 01:03:57,117 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=156, PETRI_PLACES=51, PETRI_TRANSITIONS=38} [2025-02-08 01:03:57,121 INFO L279 CegarLoopForPetriNet]: 42 programPoint places, 9 predicate places. [2025-02-08 01:03:57,121 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 38 transitions, 156 flow [2025-02-08 01:03:57,121 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 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 01:03:57,121 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:03:57,121 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:03:57,122 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-08 01:03:57,122 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-08 01:03:57,122 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:03:57,122 INFO L85 PathProgramCache]: Analyzing trace with hash 290307257, now seen corresponding path program 1 times [2025-02-08 01:03:57,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:03:57,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580752475] [2025-02-08 01:03:57,122 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 01:03:57,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:03:57,138 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-02-08 01:03:57,149 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-02-08 01:03:57,149 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:03:57,149 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:03:57,312 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 01:03:57,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:03:57,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580752475] [2025-02-08 01:03:57,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1580752475] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:03:57,312 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 01:03:57,312 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-08 01:03:57,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678572651] [2025-02-08 01:03:57,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:03:57,313 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-08 01:03:57,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:03:57,314 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-08 01:03:57,314 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-02-08 01:03:57,316 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 38 [2025-02-08 01:03:57,317 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 38 transitions, 156 flow. Second operand has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 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 01:03:57,317 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:03:57,317 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 38 [2025-02-08 01:03:57,317 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:03:58,072 INFO L124 PetriNetUnfolderBase]: 5880/8583 cut-off events. [2025-02-08 01:03:58,073 INFO L125 PetriNetUnfolderBase]: For 11315/11321 co-relation queries the response was YES. [2025-02-08 01:03:58,090 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25617 conditions, 8583 events. 5880/8583 cut-off events. For 11315/11321 co-relation queries the response was YES. Maximal size of possible extension queue 325. Compared 47760 event pairs, 1019 based on Foata normal form. 218/8797 useless extension candidates. Maximal degree in co-relation 25601. Up to 5561 conditions per place. [2025-02-08 01:03:58,116 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 59 selfloop transitions, 11 changer transitions 72/146 dead transitions. [2025-02-08 01:03:58,117 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 146 transitions, 878 flow [2025-02-08 01:03:58,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-02-08 01:03:58,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-02-08 01:03:58,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 205 transitions. [2025-02-08 01:03:58,118 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5394736842105263 [2025-02-08 01:03:58,119 INFO L175 Difference]: Start difference. First operand has 51 places, 38 transitions, 156 flow. Second operand 10 states and 205 transitions. [2025-02-08 01:03:58,119 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 146 transitions, 878 flow [2025-02-08 01:03:58,144 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 146 transitions, 812 flow, removed 3 selfloop flow, removed 2 redundant places. [2025-02-08 01:03:58,146 INFO L231 Difference]: Finished difference. Result has 63 places, 44 transitions, 246 flow [2025-02-08 01:03:58,146 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=246, PETRI_PLACES=63, PETRI_TRANSITIONS=44} [2025-02-08 01:03:58,147 INFO L279 CegarLoopForPetriNet]: 42 programPoint places, 21 predicate places. [2025-02-08 01:03:58,147 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 44 transitions, 246 flow [2025-02-08 01:03:58,147 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 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 01:03:58,147 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:03:58,147 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:03:58,147 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-08 01:03:58,147 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-08 01:03:58,148 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:03:58,148 INFO L85 PathProgramCache]: Analyzing trace with hash 96106233, now seen corresponding path program 1 times [2025-02-08 01:03:58,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:03:58,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972615589] [2025-02-08 01:03:58,148 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 01:03:58,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:03:58,153 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-02-08 01:03:58,160 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-02-08 01:03:58,160 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:03:58,160 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:03:58,284 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 01:03:58,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:03:58,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1972615589] [2025-02-08 01:03:58,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1972615589] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:03:58,284 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 01:03:58,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-08 01:03:58,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563971182] [2025-02-08 01:03:58,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:03:58,285 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-08 01:03:58,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:03:58,285 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-08 01:03:58,285 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-02-08 01:03:58,288 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 38 [2025-02-08 01:03:58,288 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 44 transitions, 246 flow. Second operand has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 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 01:03:58,289 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:03:58,289 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 38 [2025-02-08 01:03:58,289 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:03:58,925 INFO L124 PetriNetUnfolderBase]: 5288/7725 cut-off events. [2025-02-08 01:03:58,925 INFO L125 PetriNetUnfolderBase]: For 24045/24051 co-relation queries the response was YES. [2025-02-08 01:03:58,935 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26158 conditions, 7725 events. 5288/7725 cut-off events. For 24045/24051 co-relation queries the response was YES. Maximal size of possible extension queue 268. Compared 40720 event pairs, 1059 based on Foata normal form. 219/7935 useless extension candidates. Maximal degree in co-relation 26133. Up to 3651 conditions per place. [2025-02-08 01:03:58,952 INFO L140 encePairwiseOnDemand]: 29/38 looper letters, 60 selfloop transitions, 11 changer transitions 82/157 dead transitions. [2025-02-08 01:03:58,952 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 157 transitions, 1118 flow [2025-02-08 01:03:58,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-02-08 01:03:58,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-02-08 01:03:58,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 200 transitions. [2025-02-08 01:03:58,954 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5263157894736842 [2025-02-08 01:03:58,954 INFO L175 Difference]: Start difference. First operand has 63 places, 44 transitions, 246 flow. Second operand 10 states and 200 transitions. [2025-02-08 01:03:58,954 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 157 transitions, 1118 flow [2025-02-08 01:03:59,009 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 157 transitions, 1044 flow, removed 37 selfloop flow, removed 5 redundant places. [2025-02-08 01:03:59,011 INFO L231 Difference]: Finished difference. Result has 70 places, 48 transitions, 324 flow [2025-02-08 01:03:59,011 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=224, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=324, PETRI_PLACES=70, PETRI_TRANSITIONS=48} [2025-02-08 01:03:59,011 INFO L279 CegarLoopForPetriNet]: 42 programPoint places, 28 predicate places. [2025-02-08 01:03:59,012 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 48 transitions, 324 flow [2025-02-08 01:03:59,012 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 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 01:03:59,012 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:03:59,012 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:03:59,012 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-02-08 01:03:59,012 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-08 01:03:59,013 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:03:59,013 INFO L85 PathProgramCache]: Analyzing trace with hash -1231136714, now seen corresponding path program 1 times [2025-02-08 01:03:59,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:03:59,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2144909266] [2025-02-08 01:03:59,013 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 01:03:59,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:03:59,019 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-02-08 01:03:59,028 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-02-08 01:03:59,028 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:03:59,028 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:03:59,153 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 01:03:59,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:03:59,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2144909266] [2025-02-08 01:03:59,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2144909266] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:03:59,153 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 01:03:59,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-08 01:03:59,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255257180] [2025-02-08 01:03:59,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:03:59,154 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-08 01:03:59,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:03:59,154 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-08 01:03:59,154 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2025-02-08 01:03:59,157 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 38 [2025-02-08 01:03:59,157 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 48 transitions, 324 flow. Second operand has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 states have internal predecessors, (65), 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 01:03:59,157 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:03:59,157 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 38 [2025-02-08 01:03:59,157 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:03:59,863 INFO L124 PetriNetUnfolderBase]: 6688/9805 cut-off events. [2025-02-08 01:03:59,864 INFO L125 PetriNetUnfolderBase]: For 26670/26670 co-relation queries the response was YES. [2025-02-08 01:03:59,886 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32824 conditions, 9805 events. 6688/9805 cut-off events. For 26670/26670 co-relation queries the response was YES. Maximal size of possible extension queue 378. Compared 54068 event pairs, 1736 based on Foata normal form. 152/9954 useless extension candidates. Maximal degree in co-relation 32793. Up to 3935 conditions per place. [2025-02-08 01:03:59,905 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 60 selfloop transitions, 10 changer transitions 76/150 dead transitions. [2025-02-08 01:03:59,905 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 150 transitions, 1190 flow [2025-02-08 01:03:59,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-02-08 01:03:59,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-02-08 01:03:59,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 183 transitions. [2025-02-08 01:03:59,906 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5350877192982456 [2025-02-08 01:03:59,906 INFO L175 Difference]: Start difference. First operand has 70 places, 48 transitions, 324 flow. Second operand 9 states and 183 transitions. [2025-02-08 01:03:59,906 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 150 transitions, 1190 flow [2025-02-08 01:03:59,977 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 150 transitions, 1136 flow, removed 23 selfloop flow, removed 6 redundant places. [2025-02-08 01:03:59,978 INFO L231 Difference]: Finished difference. Result has 73 places, 41 transitions, 288 flow [2025-02-08 01:03:59,978 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=302, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=288, PETRI_PLACES=73, PETRI_TRANSITIONS=41} [2025-02-08 01:03:59,979 INFO L279 CegarLoopForPetriNet]: 42 programPoint places, 31 predicate places. [2025-02-08 01:03:59,979 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 41 transitions, 288 flow [2025-02-08 01:03:59,979 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 states have internal predecessors, (65), 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 01:03:59,979 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:03:59,979 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:03:59,979 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-02-08 01:03:59,979 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-08 01:03:59,979 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:03:59,979 INFO L85 PathProgramCache]: Analyzing trace with hash 808848277, now seen corresponding path program 1 times [2025-02-08 01:03:59,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:03:59,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488188947] [2025-02-08 01:03:59,980 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 01:03:59,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:03:59,985 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-02-08 01:03:59,989 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-02-08 01:03:59,989 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:03:59,989 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:04:00,074 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 01:04:00,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:04:00,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488188947] [2025-02-08 01:04:00,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [488188947] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:04:00,074 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 01:04:00,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-08 01:04:00,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553514890] [2025-02-08 01:04:00,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:04:00,075 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-08 01:04:00,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:04:00,075 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-08 01:04:00,075 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-08 01:04:00,077 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 38 [2025-02-08 01:04:00,077 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 41 transitions, 288 flow. Second operand has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 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 01:04:00,077 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:04:00,077 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 38 [2025-02-08 01:04:00,077 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:04:00,552 INFO L124 PetriNetUnfolderBase]: 3646/5497 cut-off events. [2025-02-08 01:04:00,553 INFO L125 PetriNetUnfolderBase]: For 14522/14522 co-relation queries the response was YES. [2025-02-08 01:04:00,562 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16932 conditions, 5497 events. 3646/5497 cut-off events. For 14522/14522 co-relation queries the response was YES. Maximal size of possible extension queue 196. Compared 28233 event pairs, 448 based on Foata normal form. 116/5612 useless extension candidates. Maximal degree in co-relation 16898. Up to 2133 conditions per place. [2025-02-08 01:04:00,568 INFO L140 encePairwiseOnDemand]: 32/38 looper letters, 37 selfloop transitions, 1 changer transitions 80/122 dead transitions. [2025-02-08 01:04:00,569 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 122 transitions, 832 flow [2025-02-08 01:04:00,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-02-08 01:04:00,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-02-08 01:04:00,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 175 transitions. [2025-02-08 01:04:00,570 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5116959064327485 [2025-02-08 01:04:00,570 INFO L175 Difference]: Start difference. First operand has 73 places, 41 transitions, 288 flow. Second operand 9 states and 175 transitions. [2025-02-08 01:04:00,570 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 122 transitions, 832 flow [2025-02-08 01:04:00,589 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 122 transitions, 725 flow, removed 27 selfloop flow, removed 13 redundant places. [2025-02-08 01:04:00,591 INFO L231 Difference]: Finished difference. Result has 70 places, 32 transitions, 154 flow [2025-02-08 01:04:00,591 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=225, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=154, PETRI_PLACES=70, PETRI_TRANSITIONS=32} [2025-02-08 01:04:00,592 INFO L279 CegarLoopForPetriNet]: 42 programPoint places, 28 predicate places. [2025-02-08 01:04:00,593 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 32 transitions, 154 flow [2025-02-08 01:04:00,593 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 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 01:04:00,593 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:04:00,593 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 01:04:00,593 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-02-08 01:04:00,594 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-08 01:04:00,594 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:04:00,594 INFO L85 PathProgramCache]: Analyzing trace with hash 1053312379, now seen corresponding path program 1 times [2025-02-08 01:04:00,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:04:00,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [775311712] [2025-02-08 01:04:00,594 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 01:04:00,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:04:00,602 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-02-08 01:04:00,610 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-02-08 01:04:00,610 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:04:00,610 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:04:00,695 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 01:04:00,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:04:00,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [775311712] [2025-02-08 01:04:00,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [775311712] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:04:00,696 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 01:04:00,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-08 01:04:00,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723543836] [2025-02-08 01:04:00,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:04:00,696 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 01:04:00,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:04:00,696 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 01:04:00,697 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 01:04:00,697 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2025-02-08 01:04:00,697 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 32 transitions, 154 flow. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 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 01:04:00,698 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:04:00,698 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2025-02-08 01:04:00,698 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:04:00,817 INFO L124 PetriNetUnfolderBase]: 1295/2124 cut-off events. [2025-02-08 01:04:00,818 INFO L125 PetriNetUnfolderBase]: For 4169/4169 co-relation queries the response was YES. [2025-02-08 01:04:00,821 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5666 conditions, 2124 events. 1295/2124 cut-off events. For 4169/4169 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 10571 event pairs, 225 based on Foata normal form. 106/2229 useless extension candidates. Maximal degree in co-relation 5637. Up to 1127 conditions per place. [2025-02-08 01:04:00,824 INFO L140 encePairwiseOnDemand]: 32/38 looper letters, 42 selfloop transitions, 4 changer transitions 8/59 dead transitions. [2025-02-08 01:04:00,824 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 59 transitions, 390 flow [2025-02-08 01:04:00,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 01:04:00,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-08 01:04:00,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 92 transitions. [2025-02-08 01:04:00,825 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6052631578947368 [2025-02-08 01:04:00,825 INFO L175 Difference]: Start difference. First operand has 70 places, 32 transitions, 154 flow. Second operand 4 states and 92 transitions. [2025-02-08 01:04:00,825 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 59 transitions, 390 flow [2025-02-08 01:04:00,829 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 59 transitions, 270 flow, removed 26 selfloop flow, removed 19 redundant places. [2025-02-08 01:04:00,830 INFO L231 Difference]: Finished difference. Result has 50 places, 34 transitions, 116 flow [2025-02-08 01:04:00,830 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=116, PETRI_PLACES=50, PETRI_TRANSITIONS=34} [2025-02-08 01:04:00,832 INFO L279 CegarLoopForPetriNet]: 42 programPoint places, 8 predicate places. [2025-02-08 01:04:00,832 INFO L471 AbstractCegarLoop]: Abstraction has has 50 places, 34 transitions, 116 flow [2025-02-08 01:04:00,833 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 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 01:04:00,833 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:04:00,833 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 01:04:00,833 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-02-08 01:04:00,833 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-08 01:04:00,833 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:04:00,833 INFO L85 PathProgramCache]: Analyzing trace with hash 490399542, now seen corresponding path program 1 times [2025-02-08 01:04:00,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:04:00,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173633355] [2025-02-08 01:04:00,834 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 01:04:00,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:04:00,839 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-02-08 01:04:00,844 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-02-08 01:04:00,845 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:04:00,845 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:04:00,925 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 01:04:00,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:04:00,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173633355] [2025-02-08 01:04:00,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [173633355] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:04:00,926 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 01:04:00,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-08 01:04:00,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616673905] [2025-02-08 01:04:00,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:04:00,926 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 01:04:00,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:04:00,926 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 01:04:00,927 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-02-08 01:04:00,927 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2025-02-08 01:04:00,927 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 34 transitions, 116 flow. Second operand has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 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 01:04:00,927 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:04:00,927 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2025-02-08 01:04:00,927 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:04:01,029 INFO L124 PetriNetUnfolderBase]: 751/1242 cut-off events. [2025-02-08 01:04:01,029 INFO L125 PetriNetUnfolderBase]: For 581/581 co-relation queries the response was YES. [2025-02-08 01:04:01,031 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3137 conditions, 1242 events. 751/1242 cut-off events. For 581/581 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 5272 event pairs, 103 based on Foata normal form. 76/1317 useless extension candidates. Maximal degree in co-relation 3122. Up to 445 conditions per place. [2025-02-08 01:04:01,032 INFO L140 encePairwiseOnDemand]: 32/38 looper letters, 38 selfloop transitions, 6 changer transitions 18/67 dead transitions. [2025-02-08 01:04:01,032 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 67 transitions, 344 flow [2025-02-08 01:04:01,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 01:04:01,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-08 01:04:01,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 109 transitions. [2025-02-08 01:04:01,034 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5736842105263158 [2025-02-08 01:04:01,034 INFO L175 Difference]: Start difference. First operand has 50 places, 34 transitions, 116 flow. Second operand 5 states and 109 transitions. [2025-02-08 01:04:01,034 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 67 transitions, 344 flow [2025-02-08 01:04:01,035 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 67 transitions, 326 flow, removed 2 selfloop flow, removed 4 redundant places. [2025-02-08 01:04:01,035 INFO L231 Difference]: Finished difference. Result has 52 places, 34 transitions, 129 flow [2025-02-08 01:04:01,035 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=129, PETRI_PLACES=52, PETRI_TRANSITIONS=34} [2025-02-08 01:04:01,036 INFO L279 CegarLoopForPetriNet]: 42 programPoint places, 10 predicate places. [2025-02-08 01:04:01,036 INFO L471 AbstractCegarLoop]: Abstraction has has 52 places, 34 transitions, 129 flow [2025-02-08 01:04:01,036 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 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 01:04:01,036 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:04:01,036 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 01:04:01,036 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-02-08 01:04:01,036 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-08 01:04:01,037 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:04:01,037 INFO L85 PathProgramCache]: Analyzing trace with hash 1907446633, now seen corresponding path program 1 times [2025-02-08 01:04:01,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:04:01,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790900279] [2025-02-08 01:04:01,037 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 01:04:01,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:04:01,042 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 26 statements into 1 equivalence classes. [2025-02-08 01:04:01,051 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 26 of 26 statements. [2025-02-08 01:04:01,051 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:04:01,051 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:04:01,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:04:01,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:04:01,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [790900279] [2025-02-08 01:04:01,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [790900279] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:04:01,144 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 01:04:01,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-08 01:04:01,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562335057] [2025-02-08 01:04:01,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:04:01,145 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-08 01:04:01,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:04:01,145 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-08 01:04:01,145 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2025-02-08 01:04:01,145 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2025-02-08 01:04:01,145 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 34 transitions, 129 flow. Second operand has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 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 01:04:01,145 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:04:01,145 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2025-02-08 01:04:01,145 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:04:01,233 INFO L124 PetriNetUnfolderBase]: 353/584 cut-off events. [2025-02-08 01:04:01,233 INFO L125 PetriNetUnfolderBase]: For 517/517 co-relation queries the response was YES. [2025-02-08 01:04:01,234 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1619 conditions, 584 events. 353/584 cut-off events. For 517/517 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 2024 event pairs, 65 based on Foata normal form. 24/607 useless extension candidates. Maximal degree in co-relation 1604. Up to 204 conditions per place. [2025-02-08 01:04:01,234 INFO L140 encePairwiseOnDemand]: 32/38 looper letters, 0 selfloop transitions, 0 changer transitions 53/53 dead transitions. [2025-02-08 01:04:01,234 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 53 transitions, 283 flow [2025-02-08 01:04:01,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-08 01:04:01,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-08 01:04:01,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 106 transitions. [2025-02-08 01:04:01,235 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4649122807017544 [2025-02-08 01:04:01,235 INFO L175 Difference]: Start difference. First operand has 52 places, 34 transitions, 129 flow. Second operand 6 states and 106 transitions. [2025-02-08 01:04:01,235 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 53 transitions, 283 flow [2025-02-08 01:04:01,236 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 53 transitions, 254 flow, removed 3 selfloop flow, removed 5 redundant places. [2025-02-08 01:04:01,236 INFO L231 Difference]: Finished difference. Result has 48 places, 0 transitions, 0 flow [2025-02-08 01:04:01,236 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=97, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=48, PETRI_TRANSITIONS=0} [2025-02-08 01:04:01,237 INFO L279 CegarLoopForPetriNet]: 42 programPoint places, 6 predicate places. [2025-02-08 01:04:01,237 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 0 transitions, 0 flow [2025-02-08 01:04:01,237 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 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 01:04:01,240 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2025-02-08 01:04:01,241 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2025-02-08 01:04:01,241 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2025-02-08 01:04:01,241 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2025-02-08 01:04:01,241 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-02-08 01:04:01,241 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:04:01,243 INFO L241 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2025-02-08 01:04:01,243 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-02-08 01:04:01,249 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.02 01:04:01 BasicIcfg [2025-02-08 01:04:01,249 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-02-08 01:04:01,250 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-02-08 01:04:01,250 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-02-08 01:04:01,250 INFO L274 PluginConnector]: Witness Printer initialized [2025-02-08 01:04:01,250 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 01:03:55" (3/4) ... [2025-02-08 01:04:01,252 INFO L146 WitnessPrinter]: Generating witness for correct program [2025-02-08 01:04:01,254 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure P0 [2025-02-08 01:04:01,254 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure P1 [2025-02-08 01:04:01,254 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure P2 [2025-02-08 01:04:01,258 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 27 nodes and edges [2025-02-08 01:04:01,258 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2025-02-08 01:04:01,258 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2025-02-08 01:04:01,258 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2025-02-08 01:04:01,314 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/witness.graphml [2025-02-08 01:04:01,315 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/witness.yml [2025-02-08 01:04:01,315 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-02-08 01:04:01,315 INFO L158 Benchmark]: Toolchain (without parser) took 6526.29ms. Allocated memory was 142.6MB in the beginning and 721.4MB in the end (delta: 578.8MB). Free memory was 104.7MB in the beginning and 289.4MB in the end (delta: -184.7MB). Peak memory consumption was 395.2MB. Max. memory is 16.1GB. [2025-02-08 01:04:01,315 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 201.3MB. Free memory is still 115.5MB. There was no memory consumed. Max. memory is 16.1GB. [2025-02-08 01:04:01,315 INFO L158 Benchmark]: CACSL2BoogieTranslator took 400.25ms. Allocated memory is still 142.6MB. Free memory was 104.7MB in the beginning and 84.2MB in the end (delta: 20.6MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2025-02-08 01:04:01,316 INFO L158 Benchmark]: Boogie Procedure Inliner took 36.57ms. Allocated memory is still 142.6MB. Free memory was 84.2MB in the beginning and 82.7MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2025-02-08 01:04:01,316 INFO L158 Benchmark]: Boogie Preprocessor took 20.27ms. Allocated memory is still 142.6MB. Free memory was 82.7MB in the beginning and 81.2MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2025-02-08 01:04:01,316 INFO L158 Benchmark]: IcfgBuilder took 312.02ms. Allocated memory is still 142.6MB. Free memory was 81.2MB in the beginning and 61.5MB in the end (delta: 19.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-02-08 01:04:01,316 INFO L158 Benchmark]: TraceAbstraction took 5684.85ms. Allocated memory was 142.6MB in the beginning and 721.4MB in the end (delta: 578.8MB). Free memory was 60.7MB in the beginning and 297.8MB in the end (delta: -237.1MB). Peak memory consumption was 344.8MB. Max. memory is 16.1GB. [2025-02-08 01:04:01,316 INFO L158 Benchmark]: Witness Printer took 64.79ms. Allocated memory is still 721.4MB. Free memory was 297.8MB in the beginning and 289.4MB in the end (delta: 8.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-02-08 01:04:01,317 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 201.3MB. Free memory is still 115.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 400.25ms. Allocated memory is still 142.6MB. Free memory was 104.7MB in the beginning and 84.2MB in the end (delta: 20.6MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 36.57ms. Allocated memory is still 142.6MB. Free memory was 84.2MB in the beginning and 82.7MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 20.27ms. Allocated memory is still 142.6MB. Free memory was 82.7MB in the beginning and 81.2MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * IcfgBuilder took 312.02ms. Allocated memory is still 142.6MB. Free memory was 81.2MB in the beginning and 61.5MB in the end (delta: 19.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 5684.85ms. Allocated memory was 142.6MB in the beginning and 721.4MB in the end (delta: 578.8MB). Free memory was 60.7MB in the beginning and 297.8MB in the end (delta: -237.1MB). Peak memory consumption was 344.8MB. Max. memory is 16.1GB. * Witness Printer took 64.79ms. Allocated memory is still 721.4MB. Free memory was 297.8MB in the beginning and 289.4MB in the end (delta: 8.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 18]: 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 7 procedures, 62 locations, 4 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: 5.6s, OverallIterations: 8, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 4.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 638 SdHoareTripleChecker+Valid, 1.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 634 mSDsluCounter, 30 SdHoareTripleChecker+Invalid, 0.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 22 mSDsCounter, 35 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1333 IncrementalHoareTripleChecker+Invalid, 1368 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 35 mSolverCounterUnsat, 8 mSDtfsCounter, 1333 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 68 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=324occurred in iteration=3, InterpolantAutomatonStates: 60, 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, 1.1s InterpolantComputationTime, 158 NumberOfCodeBlocks, 158 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 150 ConstructedInterpolants, 0 QuantifiedInterpolants, 626 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! [2025-02-08 01:04:01,332 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE