./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-wmm/safe026_tso.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3289d67d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/pthread-wmm/safe026_tso.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 80799f6c8fd7356eb24d2cdce2b9813d505d1c320a66d664e71d3261c3c21a3d --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-16 19:16:31,879 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-16 19:16:31,935 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-16 19:16:31,940 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-16 19:16:31,942 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-16 19:16:31,966 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-16 19:16:31,967 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-16 19:16:31,967 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-16 19:16:31,968 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-16 19:16:31,969 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-16 19:16:31,969 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-16 19:16:31,969 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-16 19:16:31,970 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-16 19:16:31,971 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-16 19:16:31,972 INFO L153 SettingsManager]: * Use SBE=true [2024-11-16 19:16:31,972 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-16 19:16:31,972 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-16 19:16:31,972 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-16 19:16:31,973 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-16 19:16:31,973 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-16 19:16:31,973 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-16 19:16:31,974 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-16 19:16:31,974 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-16 19:16:31,975 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-16 19:16:31,975 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-16 19:16:31,975 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-16 19:16:31,975 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-16 19:16:31,976 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-16 19:16:31,976 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-16 19:16:31,976 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-16 19:16:31,976 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-16 19:16:31,976 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-16 19:16:31,977 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 19:16:31,977 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-16 19:16:31,977 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-16 19:16:31,978 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-16 19:16:31,978 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-16 19:16:31,978 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-16 19:16:31,978 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-16 19:16:31,978 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-16 19:16:31,979 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-16 19:16:31,979 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-16 19:16:31,979 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 80799f6c8fd7356eb24d2cdce2b9813d505d1c320a66d664e71d3261c3c21a3d [2024-11-16 19:16:32,171 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-16 19:16:32,192 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-16 19:16:32,195 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-16 19:16:32,196 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-16 19:16:32,196 INFO L274 PluginConnector]: CDTParser initialized [2024-11-16 19:16:32,197 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/safe026_tso.i [2024-11-16 19:16:33,428 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-16 19:16:33,611 INFO L384 CDTParser]: Found 1 translation units. [2024-11-16 19:16:33,612 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe026_tso.i [2024-11-16 19:16:33,631 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8c93fec8e/ba5e035dd7a54f88928b667c2bf8379a/FLAGeb0b4e5de [2024-11-16 19:16:33,643 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8c93fec8e/ba5e035dd7a54f88928b667c2bf8379a [2024-11-16 19:16:33,645 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-16 19:16:33,646 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-16 19:16:33,647 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-16 19:16:33,647 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-16 19:16:33,653 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-16 19:16:33,653 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 07:16:33" (1/1) ... [2024-11-16 19:16:33,654 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@43b4b71c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:16:33, skipping insertion in model container [2024-11-16 19:16:33,654 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 07:16:33" (1/1) ... [2024-11-16 19:16:33,690 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-16 19:16:33,841 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe026_tso.i[945,958] [2024-11-16 19:16:33,951 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 19:16:33,960 INFO L200 MainTranslator]: Completed pre-run [2024-11-16 19:16:33,969 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe026_tso.i[945,958] [2024-11-16 19:16:33,996 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 19:16:34,022 INFO L204 MainTranslator]: Completed translation [2024-11-16 19:16:34,023 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:16:34 WrapperNode [2024-11-16 19:16:34,023 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-16 19:16:34,023 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-16 19:16:34,024 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-16 19:16:34,024 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-16 19:16:34,028 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:16:34" (1/1) ... [2024-11-16 19:16:34,042 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:16:34" (1/1) ... [2024-11-16 19:16:34,061 INFO L138 Inliner]: procedures = 175, calls = 39, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 57 [2024-11-16 19:16:34,063 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-16 19:16:34,064 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-16 19:16:34,064 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-16 19:16:34,064 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-16 19:16:34,071 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:16:34" (1/1) ... [2024-11-16 19:16:34,071 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:16:34" (1/1) ... [2024-11-16 19:16:34,073 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:16:34" (1/1) ... [2024-11-16 19:16:34,082 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]. [2024-11-16 19:16:34,083 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:16:34" (1/1) ... [2024-11-16 19:16:34,083 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:16:34" (1/1) ... [2024-11-16 19:16:34,086 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:16:34" (1/1) ... [2024-11-16 19:16:34,087 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:16:34" (1/1) ... [2024-11-16 19:16:34,088 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:16:34" (1/1) ... [2024-11-16 19:16:34,088 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:16:34" (1/1) ... [2024-11-16 19:16:34,090 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-16 19:16:34,090 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-16 19:16:34,090 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-16 19:16:34,090 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-16 19:16:34,091 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:16:34" (1/1) ... [2024-11-16 19:16:34,098 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 19:16:34,108 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:16:34,119 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-16 19:16:34,121 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-16 19:16:34,152 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-16 19:16:34,152 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-16 19:16:34,152 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-11-16 19:16:34,152 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-11-16 19:16:34,152 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-11-16 19:16:34,153 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-11-16 19:16:34,153 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-11-16 19:16:34,153 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-11-16 19:16:34,153 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-16 19:16:34,153 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-16 19:16:34,153 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-16 19:16:34,153 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-16 19:16:34,154 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-16 19:16:34,241 INFO L256 CfgBuilder]: Building ICFG [2024-11-16 19:16:34,243 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-16 19:16:34,369 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-16 19:16:34,369 INFO L307 CfgBuilder]: Performing block encoding [2024-11-16 19:16:34,450 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-16 19:16:34,451 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-16 19:16:34,451 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 07:16:34 BoogieIcfgContainer [2024-11-16 19:16:34,451 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-16 19:16:34,452 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-16 19:16:34,452 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-16 19:16:34,457 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-16 19:16:34,457 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 07:16:33" (1/3) ... [2024-11-16 19:16:34,458 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66bc58b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 07:16:34, skipping insertion in model container [2024-11-16 19:16:34,458 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:16:34" (2/3) ... [2024-11-16 19:16:34,459 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66bc58b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 07:16:34, skipping insertion in model container [2024-11-16 19:16:34,459 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 07:16:34" (3/3) ... [2024-11-16 19:16:34,460 INFO L112 eAbstractionObserver]: Analyzing ICFG safe026_tso.i [2024-11-16 19:16:34,471 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-16 19:16:34,471 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-16 19:16:34,471 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-16 19:16:34,517 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-16 19:16:34,544 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 46 places, 37 transitions, 86 flow [2024-11-16 19:16:34,571 INFO L124 PetriNetUnfolderBase]: 1/34 cut-off events. [2024-11-16 19:16:34,572 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-16 19:16:34,574 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44 conditions, 34 events. 1/34 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 62 event pairs, 0 based on Foata normal form. 0/32 useless extension candidates. Maximal degree in co-relation 36. Up to 2 conditions per place. [2024-11-16 19:16:34,574 INFO L82 GeneralOperation]: Start removeDead. Operand has 46 places, 37 transitions, 86 flow [2024-11-16 19:16:34,578 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 41 places, 31 transitions, 71 flow [2024-11-16 19:16:34,585 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-16 19:16:34,589 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;@711283a2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-16 19:16:34,589 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-16 19:16:34,600 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-16 19:16:34,600 INFO L124 PetriNetUnfolderBase]: 0/30 cut-off events. [2024-11-16 19:16:34,600 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-16 19:16:34,600 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:16:34,601 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:16:34,601 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)] === [2024-11-16 19:16:34,605 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:16:34,605 INFO L85 PathProgramCache]: Analyzing trace with hash -982406412, now seen corresponding path program 1 times [2024-11-16 19:16:34,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:16:34,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576709438] [2024-11-16 19:16:34,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:16:34,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:16:34,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:16:34,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:16:34,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:16:34,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576709438] [2024-11-16 19:16:34,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [576709438] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:16:34,970 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:16:34,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 19:16:34,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033956355] [2024-11-16 19:16:34,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:16:34,996 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 19:16:35,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:16:35,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 19:16:35,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-16 19:16:35,056 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-11-16 19:16:35,058 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 31 transitions, 71 flow. Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 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) [2024-11-16 19:16:35,058 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:16:35,058 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-11-16 19:16:35,059 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:16:35,447 INFO L124 PetriNetUnfolderBase]: 2929/4477 cut-off events. [2024-11-16 19:16:35,447 INFO L125 PetriNetUnfolderBase]: For 28/28 co-relation queries the response was YES. [2024-11-16 19:16:35,457 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8890 conditions, 4477 events. 2929/4477 cut-off events. For 28/28 co-relation queries the response was YES. Maximal size of possible extension queue 191. Compared 24239 event pairs, 411 based on Foata normal form. 180/4646 useless extension candidates. Maximal degree in co-relation 8879. Up to 2593 conditions per place. [2024-11-16 19:16:35,476 INFO L140 encePairwiseOnDemand]: 31/37 looper letters, 52 selfloop transitions, 5 changer transitions 1/62 dead transitions. [2024-11-16 19:16:35,477 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 62 transitions, 255 flow [2024-11-16 19:16:35,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-16 19:16:35,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-16 19:16:35,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 92 transitions. [2024-11-16 19:16:35,530 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6216216216216216 [2024-11-16 19:16:35,531 INFO L175 Difference]: Start difference. First operand has 41 places, 31 transitions, 71 flow. Second operand 4 states and 92 transitions. [2024-11-16 19:16:35,532 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 62 transitions, 255 flow [2024-11-16 19:16:35,535 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 62 transitions, 250 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-16 19:16:35,538 INFO L231 Difference]: Finished difference. Result has 43 places, 34 transitions, 102 flow [2024-11-16 19:16:35,539 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=102, PETRI_PLACES=43, PETRI_TRANSITIONS=34} [2024-11-16 19:16:35,543 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 2 predicate places. [2024-11-16 19:16:35,544 INFO L471 AbstractCegarLoop]: Abstraction has has 43 places, 34 transitions, 102 flow [2024-11-16 19:16:35,544 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 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) [2024-11-16 19:16:35,544 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:16:35,544 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:16:35,544 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-16 19:16:35,544 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)] === [2024-11-16 19:16:35,545 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:16:35,545 INFO L85 PathProgramCache]: Analyzing trace with hash 1001909268, now seen corresponding path program 1 times [2024-11-16 19:16:35,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:16:35,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049018907] [2024-11-16 19:16:35,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:16:35,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:16:35,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:16:35,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:16:35,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:16:35,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049018907] [2024-11-16 19:16:35,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1049018907] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:16:35,713 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:16:35,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-16 19:16:35,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650132603] [2024-11-16 19:16:35,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:16:35,715 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-16 19:16:35,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:16:35,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-16 19:16:35,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-16 19:16:35,716 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-11-16 19:16:35,717 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 34 transitions, 102 flow. Second operand has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 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) [2024-11-16 19:16:35,717 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:16:35,717 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-11-16 19:16:35,717 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:16:35,953 INFO L124 PetriNetUnfolderBase]: 1665/2605 cut-off events. [2024-11-16 19:16:35,953 INFO L125 PetriNetUnfolderBase]: For 582/582 co-relation queries the response was YES. [2024-11-16 19:16:35,957 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6035 conditions, 2605 events. 1665/2605 cut-off events. For 582/582 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 12619 event pairs, 253 based on Foata normal form. 132/2726 useless extension candidates. Maximal degree in co-relation 6023. Up to 913 conditions per place. [2024-11-16 19:16:36,000 INFO L140 encePairwiseOnDemand]: 31/37 looper letters, 66 selfloop transitions, 8 changer transitions 1/79 dead transitions. [2024-11-16 19:16:36,001 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 79 transitions, 363 flow [2024-11-16 19:16:36,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-16 19:16:36,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-16 19:16:36,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 117 transitions. [2024-11-16 19:16:36,004 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6324324324324324 [2024-11-16 19:16:36,004 INFO L175 Difference]: Start difference. First operand has 43 places, 34 transitions, 102 flow. Second operand 5 states and 117 transitions. [2024-11-16 19:16:36,004 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 79 transitions, 363 flow [2024-11-16 19:16:36,008 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 79 transitions, 353 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-11-16 19:16:36,009 INFO L231 Difference]: Finished difference. Result has 47 places, 37 transitions, 142 flow [2024-11-16 19:16:36,010 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=142, PETRI_PLACES=47, PETRI_TRANSITIONS=37} [2024-11-16 19:16:36,010 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 6 predicate places. [2024-11-16 19:16:36,010 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 37 transitions, 142 flow [2024-11-16 19:16:36,011 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 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) [2024-11-16 19:16:36,011 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:16:36,011 INFO L204 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] [2024-11-16 19:16:36,011 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-16 19:16:36,011 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)] === [2024-11-16 19:16:36,012 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:16:36,012 INFO L85 PathProgramCache]: Analyzing trace with hash 1373749882, now seen corresponding path program 1 times [2024-11-16 19:16:36,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:16:36,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771881923] [2024-11-16 19:16:36,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:16:36,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:16:36,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:16:36,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:16:36,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:16:36,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771881923] [2024-11-16 19:16:36,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [771881923] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:16:36,132 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:16:36,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-16 19:16:36,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535845232] [2024-11-16 19:16:36,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:16:36,132 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-16 19:16:36,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:16:36,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-16 19:16:36,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-16 19:16:36,133 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-11-16 19:16:36,134 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 37 transitions, 142 flow. Second operand has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 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) [2024-11-16 19:16:36,134 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:16:36,134 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-11-16 19:16:36,134 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:16:36,299 INFO L124 PetriNetUnfolderBase]: 981/1533 cut-off events. [2024-11-16 19:16:36,301 INFO L125 PetriNetUnfolderBase]: For 1014/1014 co-relation queries the response was YES. [2024-11-16 19:16:36,303 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3905 conditions, 1533 events. 981/1533 cut-off events. For 1014/1014 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 6674 event pairs, 223 based on Foata normal form. 52/1574 useless extension candidates. Maximal degree in co-relation 3891. Up to 556 conditions per place. [2024-11-16 19:16:36,308 INFO L140 encePairwiseOnDemand]: 31/37 looper letters, 56 selfloop transitions, 11 changer transitions 1/72 dead transitions. [2024-11-16 19:16:36,308 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 72 transitions, 358 flow [2024-11-16 19:16:36,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-16 19:16:36,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-16 19:16:36,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 118 transitions. [2024-11-16 19:16:36,309 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5315315315315315 [2024-11-16 19:16:36,309 INFO L175 Difference]: Start difference. First operand has 47 places, 37 transitions, 142 flow. Second operand 6 states and 118 transitions. [2024-11-16 19:16:36,309 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 72 transitions, 358 flow [2024-11-16 19:16:36,316 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 72 transitions, 333 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-11-16 19:16:36,317 INFO L231 Difference]: Finished difference. Result has 50 places, 37 transitions, 156 flow [2024-11-16 19:16:36,317 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=156, PETRI_PLACES=50, PETRI_TRANSITIONS=37} [2024-11-16 19:16:36,318 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 9 predicate places. [2024-11-16 19:16:36,318 INFO L471 AbstractCegarLoop]: Abstraction has has 50 places, 37 transitions, 156 flow [2024-11-16 19:16:36,319 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 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) [2024-11-16 19:16:36,319 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:16:36,319 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:16:36,319 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-16 19:16:36,319 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)] === [2024-11-16 19:16:36,320 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:16:36,320 INFO L85 PathProgramCache]: Analyzing trace with hash 788933971, now seen corresponding path program 1 times [2024-11-16 19:16:36,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:16:36,320 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511782402] [2024-11-16 19:16:36,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:16:36,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:16:36,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:16:36,482 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:16:36,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:16:36,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511782402] [2024-11-16 19:16:36,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [511782402] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:16:36,483 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:16:36,483 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-16 19:16:36,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285635535] [2024-11-16 19:16:36,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:16:36,484 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-16 19:16:36,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:16:36,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-16 19:16:36,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-16 19:16:36,492 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-11-16 19:16:36,492 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 37 transitions, 156 flow. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 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) [2024-11-16 19:16:36,492 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:16:36,492 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-11-16 19:16:36,492 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:16:36,899 INFO L124 PetriNetUnfolderBase]: 2127/3325 cut-off events. [2024-11-16 19:16:36,900 INFO L125 PetriNetUnfolderBase]: For 2960/2960 co-relation queries the response was YES. [2024-11-16 19:16:36,905 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8846 conditions, 3325 events. 2127/3325 cut-off events. For 2960/2960 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 16562 event pairs, 317 based on Foata normal form. 24/3345 useless extension candidates. Maximal degree in co-relation 8831. Up to 1153 conditions per place. [2024-11-16 19:16:36,909 INFO L140 encePairwiseOnDemand]: 30/37 looper letters, 48 selfloop transitions, 5 changer transitions 78/135 dead transitions. [2024-11-16 19:16:36,910 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 135 transitions, 836 flow [2024-11-16 19:16:36,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-16 19:16:36,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-16 19:16:36,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 206 transitions. [2024-11-16 19:16:36,912 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.46396396396396394 [2024-11-16 19:16:36,912 INFO L175 Difference]: Start difference. First operand has 50 places, 37 transitions, 156 flow. Second operand 12 states and 206 transitions. [2024-11-16 19:16:36,912 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 135 transitions, 836 flow [2024-11-16 19:16:36,932 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 135 transitions, 621 flow, removed 40 selfloop flow, removed 8 redundant places. [2024-11-16 19:16:36,934 INFO L231 Difference]: Finished difference. Result has 63 places, 39 transitions, 142 flow [2024-11-16 19:16:36,934 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=142, PETRI_PLACES=63, PETRI_TRANSITIONS=39} [2024-11-16 19:16:36,936 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 22 predicate places. [2024-11-16 19:16:36,936 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 39 transitions, 142 flow [2024-11-16 19:16:36,936 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 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) [2024-11-16 19:16:36,936 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:16:36,936 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:16:36,937 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-16 19:16:36,937 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)] === [2024-11-16 19:16:36,937 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:16:36,937 INFO L85 PathProgramCache]: Analyzing trace with hash -1018287433, now seen corresponding path program 2 times [2024-11-16 19:16:36,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:16:36,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1052729048] [2024-11-16 19:16:36,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:16:36,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:16:36,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:16:37,069 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:16:37,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:16:37,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1052729048] [2024-11-16 19:16:37,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1052729048] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:16:37,070 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:16:37,070 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-16 19:16:37,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300421632] [2024-11-16 19:16:37,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:16:37,071 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-16 19:16:37,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:16:37,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-16 19:16:37,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-16 19:16:37,076 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-11-16 19:16:37,077 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 39 transitions, 142 flow. Second operand has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:16:37,077 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:16:37,077 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-11-16 19:16:37,077 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:16:37,318 INFO L124 PetriNetUnfolderBase]: 919/1475 cut-off events. [2024-11-16 19:16:37,318 INFO L125 PetriNetUnfolderBase]: For 458/458 co-relation queries the response was YES. [2024-11-16 19:16:37,321 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3616 conditions, 1475 events. 919/1475 cut-off events. For 458/458 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 6030 event pairs, 204 based on Foata normal form. 8/1482 useless extension candidates. Maximal degree in co-relation 3595. Up to 791 conditions per place. [2024-11-16 19:16:37,325 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 48 selfloop transitions, 8 changer transitions 22/82 dead transitions. [2024-11-16 19:16:37,325 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 82 transitions, 429 flow [2024-11-16 19:16:37,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-16 19:16:37,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-16 19:16:37,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 122 transitions. [2024-11-16 19:16:37,326 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.47104247104247104 [2024-11-16 19:16:37,326 INFO L175 Difference]: Start difference. First operand has 63 places, 39 transitions, 142 flow. Second operand 7 states and 122 transitions. [2024-11-16 19:16:37,327 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 82 transitions, 429 flow [2024-11-16 19:16:37,328 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 82 transitions, 399 flow, removed 15 selfloop flow, removed 8 redundant places. [2024-11-16 19:16:37,329 INFO L231 Difference]: Finished difference. Result has 57 places, 41 transitions, 162 flow [2024-11-16 19:16:37,329 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=162, PETRI_PLACES=57, PETRI_TRANSITIONS=41} [2024-11-16 19:16:37,330 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 16 predicate places. [2024-11-16 19:16:37,330 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 41 transitions, 162 flow [2024-11-16 19:16:37,330 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:16:37,330 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:16:37,330 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:16:37,331 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-16 19:16:37,331 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)] === [2024-11-16 19:16:37,331 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:16:37,331 INFO L85 PathProgramCache]: Analyzing trace with hash -79478009, now seen corresponding path program 3 times [2024-11-16 19:16:37,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:16:37,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590823188] [2024-11-16 19:16:37,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:16:37,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:16:37,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:16:37,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:16:37,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:16:37,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590823188] [2024-11-16 19:16:37,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1590823188] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:16:37,465 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:16:37,465 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-16 19:16:37,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091735799] [2024-11-16 19:16:37,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:16:37,465 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-16 19:16:37,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:16:37,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-16 19:16:37,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-16 19:16:37,474 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-11-16 19:16:37,475 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 41 transitions, 162 flow. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 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) [2024-11-16 19:16:37,475 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:16:37,475 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-11-16 19:16:37,475 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:16:37,712 INFO L124 PetriNetUnfolderBase]: 1095/1747 cut-off events. [2024-11-16 19:16:37,712 INFO L125 PetriNetUnfolderBase]: For 722/722 co-relation queries the response was YES. [2024-11-16 19:16:37,714 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4332 conditions, 1747 events. 1095/1747 cut-off events. For 722/722 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 7753 event pairs, 152 based on Foata normal form. 8/1754 useless extension candidates. Maximal degree in co-relation 4313. Up to 980 conditions per place. [2024-11-16 19:16:37,717 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 42 selfloop transitions, 5 changer transitions 37/88 dead transitions. [2024-11-16 19:16:37,717 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 88 transitions, 470 flow [2024-11-16 19:16:37,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-16 19:16:37,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-16 19:16:37,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 135 transitions. [2024-11-16 19:16:37,718 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4560810810810811 [2024-11-16 19:16:37,718 INFO L175 Difference]: Start difference. First operand has 57 places, 41 transitions, 162 flow. Second operand 8 states and 135 transitions. [2024-11-16 19:16:37,718 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 88 transitions, 470 flow [2024-11-16 19:16:37,719 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 88 transitions, 454 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-11-16 19:16:37,721 INFO L231 Difference]: Finished difference. Result has 61 places, 37 transitions, 145 flow [2024-11-16 19:16:37,721 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=149, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=145, PETRI_PLACES=61, PETRI_TRANSITIONS=37} [2024-11-16 19:16:37,723 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 20 predicate places. [2024-11-16 19:16:37,723 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 37 transitions, 145 flow [2024-11-16 19:16:37,723 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 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) [2024-11-16 19:16:37,723 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:16:37,723 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:16:37,723 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-16 19:16:37,724 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)] === [2024-11-16 19:16:37,724 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:16:37,724 INFO L85 PathProgramCache]: Analyzing trace with hash 821296381, now seen corresponding path program 4 times [2024-11-16 19:16:37,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:16:37,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479531917] [2024-11-16 19:16:37,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:16:37,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:16:37,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:16:37,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:16:37,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:16:37,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479531917] [2024-11-16 19:16:37,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [479531917] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:16:37,828 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:16:37,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-16 19:16:37,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59305396] [2024-11-16 19:16:37,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:16:37,829 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-16 19:16:37,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:16:37,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-16 19:16:37,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-16 19:16:37,835 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-11-16 19:16:37,835 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 37 transitions, 145 flow. Second operand has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:16:37,835 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:16:37,835 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-11-16 19:16:37,835 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:16:37,936 INFO L124 PetriNetUnfolderBase]: 416/686 cut-off events. [2024-11-16 19:16:37,936 INFO L125 PetriNetUnfolderBase]: For 541/541 co-relation queries the response was YES. [2024-11-16 19:16:37,938 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1817 conditions, 686 events. 416/686 cut-off events. For 541/541 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 2438 event pairs, 140 based on Foata normal form. 8/693 useless extension candidates. Maximal degree in co-relation 1806. Up to 600 conditions per place. [2024-11-16 19:16:37,938 INFO L140 encePairwiseOnDemand]: 32/37 looper letters, 0 selfloop transitions, 0 changer transitions 45/45 dead transitions. [2024-11-16 19:16:37,938 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 45 transitions, 245 flow [2024-11-16 19:16:37,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-16 19:16:37,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-16 19:16:37,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 85 transitions. [2024-11-16 19:16:37,940 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.38288288288288286 [2024-11-16 19:16:37,940 INFO L175 Difference]: Start difference. First operand has 61 places, 37 transitions, 145 flow. Second operand 6 states and 85 transitions. [2024-11-16 19:16:37,940 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 45 transitions, 245 flow [2024-11-16 19:16:37,941 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 45 transitions, 216 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-11-16 19:16:37,941 INFO L231 Difference]: Finished difference. Result has 50 places, 0 transitions, 0 flow [2024-11-16 19:16:37,941 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=50, PETRI_TRANSITIONS=0} [2024-11-16 19:16:37,942 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 9 predicate places. [2024-11-16 19:16:37,942 INFO L471 AbstractCegarLoop]: Abstraction has has 50 places, 0 transitions, 0 flow [2024-11-16 19:16:37,942 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:16:37,944 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2024-11-16 19:16:37,944 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2024-11-16 19:16:37,944 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2024-11-16 19:16:37,945 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2024-11-16 19:16:37,945 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-16 19:16:37,945 INFO L407 BasicCegarLoop]: Path program histogram: [4, 1, 1, 1] [2024-11-16 19:16:37,949 INFO L239 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-11-16 19:16:37,949 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-16 19:16:37,953 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.11 07:16:37 BasicIcfg [2024-11-16 19:16:37,953 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-16 19:16:37,953 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-16 19:16:37,954 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-16 19:16:37,954 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-16 19:16:37,954 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 07:16:34" (3/4) ... [2024-11-16 19:16:37,956 INFO L143 WitnessPrinter]: Generating witness for correct program [2024-11-16 19:16:37,959 INFO L393 IcfgBacktranslator]: Ignoring RootEdge to procedure P0 [2024-11-16 19:16:37,959 INFO L393 IcfgBacktranslator]: Ignoring RootEdge to procedure P1 [2024-11-16 19:16:37,959 INFO L393 IcfgBacktranslator]: Ignoring RootEdge to procedure P2 [2024-11-16 19:16:37,962 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 28 nodes and edges [2024-11-16 19:16:37,962 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2024-11-16 19:16:37,962 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2024-11-16 19:16:37,962 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2024-11-16 19:16:38,028 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-16 19:16:38,028 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-11-16 19:16:38,029 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-16 19:16:38,029 INFO L158 Benchmark]: Toolchain (without parser) took 4383.27ms. Allocated memory was 157.3MB in the beginning and 327.2MB in the end (delta: 169.9MB). Free memory was 83.2MB in the beginning and 196.0MB in the end (delta: -112.7MB). Peak memory consumption was 58.7MB. Max. memory is 16.1GB. [2024-11-16 19:16:38,029 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 157.3MB. Free memory is still 113.1MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-16 19:16:38,029 INFO L158 Benchmark]: CACSL2BoogieTranslator took 376.30ms. Allocated memory is still 157.3MB. Free memory was 83.1MB in the beginning and 111.5MB in the end (delta: -28.4MB). Peak memory consumption was 11.1MB. Max. memory is 16.1GB. [2024-11-16 19:16:38,030 INFO L158 Benchmark]: Boogie Procedure Inliner took 40.02ms. Allocated memory is still 157.3MB. Free memory was 111.5MB in the beginning and 109.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-16 19:16:38,030 INFO L158 Benchmark]: Boogie Preprocessor took 25.79ms. Allocated memory is still 157.3MB. Free memory was 109.4MB in the beginning and 107.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-16 19:16:38,030 INFO L158 Benchmark]: IcfgBuilder took 361.07ms. Allocated memory is still 157.3MB. Free memory was 107.3MB in the beginning and 86.3MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2024-11-16 19:16:38,030 INFO L158 Benchmark]: TraceAbstraction took 3500.78ms. Allocated memory was 157.3MB in the beginning and 327.2MB in the end (delta: 169.9MB). Free memory was 86.3MB in the beginning and 200.2MB in the end (delta: -113.9MB). Peak memory consumption was 56.0MB. Max. memory is 16.1GB. [2024-11-16 19:16:38,031 INFO L158 Benchmark]: Witness Printer took 75.13ms. Allocated memory is still 327.2MB. Free memory was 200.2MB in the beginning and 196.0MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-16 19:16:38,032 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 157.3MB. Free memory is still 113.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 376.30ms. Allocated memory is still 157.3MB. Free memory was 83.1MB in the beginning and 111.5MB in the end (delta: -28.4MB). Peak memory consumption was 11.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 40.02ms. Allocated memory is still 157.3MB. Free memory was 111.5MB in the beginning and 109.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 25.79ms. Allocated memory is still 157.3MB. Free memory was 109.4MB in the beginning and 107.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * IcfgBuilder took 361.07ms. Allocated memory is still 157.3MB. Free memory was 107.3MB in the beginning and 86.3MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * TraceAbstraction took 3500.78ms. Allocated memory was 157.3MB in the beginning and 327.2MB in the end (delta: 169.9MB). Free memory was 86.3MB in the beginning and 200.2MB in the end (delta: -113.9MB). Peak memory consumption was 56.0MB. Max. memory is 16.1GB. * Witness Printer took 75.13ms. Allocated memory is still 327.2MB. Free memory was 200.2MB in the beginning and 196.0MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. 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, 60 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: 3.4s, OverallIterations: 7, TraceHistogramMax: 1, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 2.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 470 SdHoareTripleChecker+Valid, 0.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 462 mSDsluCounter, 38 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 31 mSDsCounter, 17 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1105 IncrementalHoareTripleChecker+Invalid, 1122 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 17 mSolverCounterUnsat, 7 mSDtfsCounter, 1105 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 62 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=162occurred in iteration=5, InterpolantAutomatonStates: 48, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 167 NumberOfCodeBlocks, 167 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 160 ConstructedInterpolants, 0 QuantifiedInterpolants, 680 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-11-16 19:16:38,059 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE