/root/.sdkman/candidates/java/21.0.5-tem/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata ./data -tc ../benchexec/../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../benchexec/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.automaton.type.used.in.concurrency.analysis PETRI_NET -i ../../../trunk/examples/svcomp/goblint-regression/13-privatized_04-priv_multi_true.i -------------------------------------------------------------------------------- This is Ultimate 0.3.0-wip.dk.cfg-lbe-improvements-94356ea-m [2025-04-13 19:39:36,101 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-04-13 19:39:36,154 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../benchexec/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2025-04-13 19:39:36,159 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-04-13 19:39:36,159 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-04-13 19:39:36,183 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-04-13 19:39:36,184 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-04-13 19:39:36,184 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-04-13 19:39:36,184 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-04-13 19:39:36,184 INFO L153 SettingsManager]: * Use memory slicer=true [2025-04-13 19:39:36,184 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-04-13 19:39:36,184 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-04-13 19:39:36,185 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-04-13 19:39:36,185 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-04-13 19:39:36,185 INFO L153 SettingsManager]: * Use SBE=true [2025-04-13 19:39:36,185 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-04-13 19:39:36,185 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-04-13 19:39:36,185 INFO L153 SettingsManager]: * sizeof long=4 [2025-04-13 19:39:36,185 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-04-13 19:39:36,185 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-04-13 19:39:36,185 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-04-13 19:39:36,185 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-04-13 19:39:36,185 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-04-13 19:39:36,185 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-04-13 19:39:36,185 INFO L153 SettingsManager]: * sizeof long double=12 [2025-04-13 19:39:36,185 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-04-13 19:39:36,185 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-04-13 19:39:36,185 INFO L153 SettingsManager]: * Use constant arrays=true [2025-04-13 19:39:36,186 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-04-13 19:39:36,186 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-13 19:39:36,186 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-13 19:39:36,186 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-13 19:39:36,186 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-13 19:39:36,186 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-04-13 19:39:36,186 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-13 19:39:36,186 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-13 19:39:36,186 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-13 19:39:36,186 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-13 19:39:36,186 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-04-13 19:39:36,186 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-04-13 19:39:36,186 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-04-13 19:39:36,186 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-04-13 19:39:36,187 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-04-13 19:39:36,188 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-04-13 19:39:36,188 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-04-13 19:39:36,188 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-04-13 19:39:36,188 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-04-13 19:39:36,188 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Automaton type used in concurrency analysis -> PETRI_NET [2025-04-13 19:39:36,408 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-04-13 19:39:36,417 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-04-13 19:39:36,418 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-04-13 19:39:36,419 INFO L270 PluginConnector]: Initializing CDTParser... [2025-04-13 19:39:36,421 INFO L274 PluginConnector]: CDTParser initialized [2025-04-13 19:39:36,421 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/13-privatized_04-priv_multi_true.i [2025-04-13 19:39:37,750 INFO L538 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/45db273fc/4f99413743724870814bf56c05aa8ebc/FLAG9fd3e1c72 [2025-04-13 19:39:38,027 INFO L389 CDTParser]: Found 1 translation units. [2025-04-13 19:39:38,028 INFO L178 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_04-priv_multi_true.i [2025-04-13 19:39:38,045 INFO L432 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/45db273fc/4f99413743724870814bf56c05aa8ebc/FLAG9fd3e1c72 [2025-04-13 19:39:38,801 INFO L440 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/45db273fc/4f99413743724870814bf56c05aa8ebc [2025-04-13 19:39:38,804 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-04-13 19:39:38,805 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2025-04-13 19:39:38,805 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-04-13 19:39:38,805 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-04-13 19:39:38,808 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-04-13 19:39:38,809 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.04 07:39:38" (1/1) ... [2025-04-13 19:39:38,809 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@32c05143 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:39:38, skipping insertion in model container [2025-04-13 19:39:38,809 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.04 07:39:38" (1/1) ... [2025-04-13 19:39:38,840 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-04-13 19:39:39,003 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_04-priv_multi_true.i[1087,1100] [2025-04-13 19:39:39,201 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-04-13 19:39:39,214 INFO L200 MainTranslator]: Completed pre-run [2025-04-13 19:39:39,229 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_04-priv_multi_true.i[1087,1100] [2025-04-13 19:39:39,263 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-04-13 19:39:39,301 INFO L204 MainTranslator]: Completed translation [2025-04-13 19:39:39,302 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:39:39 WrapperNode [2025-04-13 19:39:39,302 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-04-13 19:39:39,303 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-04-13 19:39:39,303 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-04-13 19:39:39,303 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-04-13 19:39:39,308 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:39:39" (1/1) ... [2025-04-13 19:39:39,330 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:39:39" (1/1) ... [2025-04-13 19:39:39,353 INFO L138 Inliner]: procedures = 271, calls = 37, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 94 [2025-04-13 19:39:39,353 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-04-13 19:39:39,354 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-04-13 19:39:39,354 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-04-13 19:39:39,354 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-04-13 19:39:39,362 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:39:39" (1/1) ... [2025-04-13 19:39:39,363 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:39:39" (1/1) ... [2025-04-13 19:39:39,368 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:39:39" (1/1) ... [2025-04-13 19:39:39,386 INFO L175 MemorySlicer]: Split 12 memory accesses to 3 slices as follows [2, 5, 5]. 42 percent of accesses are in the largest equivalence class. The 12 initializations are split as follows [2, 5, 5]. The 0 writes are split as follows [0, 0, 0]. [2025-04-13 19:39:39,386 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:39:39" (1/1) ... [2025-04-13 19:39:39,386 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:39:39" (1/1) ... [2025-04-13 19:39:39,395 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:39:39" (1/1) ... [2025-04-13 19:39:39,396 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:39:39" (1/1) ... [2025-04-13 19:39:39,398 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:39:39" (1/1) ... [2025-04-13 19:39:39,400 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:39:39" (1/1) ... [2025-04-13 19:39:39,401 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:39:39" (1/1) ... [2025-04-13 19:39:39,409 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-04-13 19:39:39,410 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-04-13 19:39:39,410 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-04-13 19:39:39,410 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-04-13 19:39:39,411 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:39:39" (1/1) ... [2025-04-13 19:39:39,414 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-13 19:39:39,429 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 19:39:39,440 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-04-13 19:39:39,442 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-04-13 19:39:39,459 INFO L130 BoogieDeclarations]: Found specification of procedure generate [2025-04-13 19:39:39,460 INFO L138 BoogieDeclarations]: Found implementation of procedure generate [2025-04-13 19:39:39,460 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2025-04-13 19:39:39,460 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2025-04-13 19:39:39,460 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-04-13 19:39:39,460 INFO L130 BoogieDeclarations]: Found specification of procedure dispose [2025-04-13 19:39:39,460 INFO L138 BoogieDeclarations]: Found implementation of procedure dispose [2025-04-13 19:39:39,460 INFO L130 BoogieDeclarations]: Found specification of procedure process [2025-04-13 19:39:39,460 INFO L138 BoogieDeclarations]: Found implementation of procedure process [2025-04-13 19:39:39,460 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-04-13 19:39:39,460 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-04-13 19:39:39,460 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-04-13 19:39:39,460 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-04-13 19:39:39,460 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-04-13 19:39:39,461 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-04-13 19:39:39,652 INFO L234 CfgBuilder]: Building ICFG [2025-04-13 19:39:39,654 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-04-13 19:39:39,798 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-04-13 19:39:39,799 INFO L289 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-04-13 19:39:39,799 INFO L294 CfgBuilder]: Performing block encoding [2025-04-13 19:39:39,950 WARN L179 LargeBlockEncoding]: Complex 2:2 sequential composition. Such compositions can cause exponential blowup and should not occur in structured programs. [2025-04-13 19:39:39,952 WARN L179 LargeBlockEncoding]: Complex 2:2 sequential composition. Such compositions can cause exponential blowup and should not occur in structured programs. [2025-04-13 19:39:39,956 INFO L313 CfgBuilder]: Removed 2 assume(true) statements. [2025-04-13 19:39:39,957 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.04 07:39:39 BoogieIcfgContainer [2025-04-13 19:39:39,957 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-04-13 19:39:39,958 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-04-13 19:39:39,959 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-04-13 19:39:39,962 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-04-13 19:39:39,962 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.04 07:39:38" (1/3) ... [2025-04-13 19:39:39,962 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65befa31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.04 07:39:39, skipping insertion in model container [2025-04-13 19:39:39,962 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:39:39" (2/3) ... [2025-04-13 19:39:39,963 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65befa31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.04 07:39:39, skipping insertion in model container [2025-04-13 19:39:39,963 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.04 07:39:39" (3/3) ... [2025-04-13 19:39:39,963 INFO L128 eAbstractionObserver]: Analyzing ICFG 13-privatized_04-priv_multi_true.i [2025-04-13 19:39:39,973 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-04-13 19:39:39,974 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG 13-privatized_04-priv_multi_true.i that has 4 procedures, 44 locations, 48 edges, 1 initial locations, 4 loop locations, and 2 error locations. [2025-04-13 19:39:39,974 INFO L490 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-04-13 19:39:40,020 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-04-13 19:39:40,045 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 53 places, 51 transitions, 114 flow [2025-04-13 19:39:40,073 INFO L116 PetriNetUnfolderBase]: 8/48 cut-off events. [2025-04-13 19:39:40,075 INFO L117 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-04-13 19:39:40,078 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58 conditions, 48 events. 8/48 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 107 event pairs, 0 based on Foata normal form. 0/38 useless extension candidates. Maximal degree in co-relation 50. Up to 2 conditions per place. [2025-04-13 19:39:40,078 INFO L82 GeneralOperation]: Start removeDead. Operand has 53 places, 51 transitions, 114 flow [2025-04-13 19:39:40,082 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 50 places, 48 transitions, 105 flow [2025-04-13 19:39:40,089 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-04-13 19:39:40,100 INFO L340 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@205f62bf, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-13 19:39:40,101 INFO L341 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2025-04-13 19:39:40,113 INFO L177 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-04-13 19:39:40,113 INFO L116 PetriNetUnfolderBase]: 5/37 cut-off events. [2025-04-13 19:39:40,113 INFO L117 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-04-13 19:39:40,114 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-13 19:39:40,114 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 19:39:40,114 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting disposeErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2025-04-13 19:39:40,118 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 19:39:40,118 INFO L85 PathProgramCache]: Analyzing trace with hash -1212635360, now seen corresponding path program 1 times [2025-04-13 19:39:40,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 19:39:40,123 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314866368] [2025-04-13 19:39:40,123 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 19:39:40,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 19:39:40,254 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-04-13 19:39:40,279 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-04-13 19:39:40,280 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 19:39:40,280 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 19:39:40,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 19:39:40,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 19:39:40,589 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1314866368] [2025-04-13 19:39:40,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1314866368] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 19:39:40,590 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 19:39:40,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-04-13 19:39:40,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225046304] [2025-04-13 19:39:40,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 19:39:40,597 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-04-13 19:39:40,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 19:39:40,617 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-04-13 19:39:40,618 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-04-13 19:39:40,619 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 51 [2025-04-13 19:39:40,621 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 48 transitions, 105 flow. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 19:39:40,621 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-13 19:39:40,621 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 51 [2025-04-13 19:39:40,621 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-13 19:39:42,785 INFO L116 PetriNetUnfolderBase]: 27103/37460 cut-off events. [2025-04-13 19:39:42,786 INFO L117 PetriNetUnfolderBase]: For 80/80 co-relation queries the response was YES. [2025-04-13 19:39:42,869 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72974 conditions, 37460 events. 27103/37460 cut-off events. For 80/80 co-relation queries the response was YES. Maximal size of possible extension queue 854. Compared 212535 event pairs, 4343 based on Foata normal form. 0/31519 useless extension candidates. Maximal degree in co-relation 72963. Up to 15757 conditions per place. [2025-04-13 19:39:43,020 INFO L140 encePairwiseOnDemand]: 41/51 looper letters, 113 selfloop transitions, 6 changer transitions 0/125 dead transitions. [2025-04-13 19:39:43,020 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 125 transitions, 500 flow [2025-04-13 19:39:43,022 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-04-13 19:39:43,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-04-13 19:39:43,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 184 transitions. [2025-04-13 19:39:43,033 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.7215686274509804 [2025-04-13 19:39:43,034 INFO L175 Difference]: Start difference. First operand has 50 places, 48 transitions, 105 flow. Second operand 5 states and 184 transitions. [2025-04-13 19:39:43,035 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 125 transitions, 500 flow [2025-04-13 19:39:43,041 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 125 transitions, 496 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-04-13 19:39:43,044 INFO L231 Difference]: Finished difference. Result has 53 places, 49 transitions, 146 flow [2025-04-13 19:39:43,046 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=146, PETRI_PLACES=53, PETRI_TRANSITIONS=49} [2025-04-13 19:39:43,049 INFO L279 CegarLoopForPetriNet]: 50 programPoint places, 3 predicate places. [2025-04-13 19:39:43,049 INFO L485 AbstractCegarLoop]: Abstraction has has 53 places, 49 transitions, 146 flow [2025-04-13 19:39:43,050 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 19:39:43,050 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-13 19:39:43,050 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 19:39:43,050 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-04-13 19:39:43,050 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2025-04-13 19:39:43,051 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 19:39:43,051 INFO L85 PathProgramCache]: Analyzing trace with hash -1245907978, now seen corresponding path program 1 times [2025-04-13 19:39:43,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 19:39:43,051 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890086140] [2025-04-13 19:39:43,051 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 19:39:43,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 19:39:43,079 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-04-13 19:39:43,089 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-04-13 19:39:43,089 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 19:39:43,089 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 19:39:43,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 19:39:43,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 19:39:43,257 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890086140] [2025-04-13 19:39:43,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1890086140] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 19:39:43,257 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 19:39:43,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-04-13 19:39:43,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982099760] [2025-04-13 19:39:43,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 19:39:43,259 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-04-13 19:39:43,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 19:39:43,259 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-04-13 19:39:43,259 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-13 19:39:43,259 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 51 [2025-04-13 19:39:43,260 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 49 transitions, 146 flow. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 19:39:43,260 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-13 19:39:43,260 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 51 [2025-04-13 19:39:43,260 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-13 19:39:46,224 INFO L116 PetriNetUnfolderBase]: 47886/66075 cut-off events. [2025-04-13 19:39:46,225 INFO L117 PetriNetUnfolderBase]: For 19386/19386 co-relation queries the response was YES. [2025-04-13 19:39:46,328 INFO L83 FinitePrefix]: Finished finitePrefix Result has 146091 conditions, 66075 events. 47886/66075 cut-off events. For 19386/19386 co-relation queries the response was YES. Maximal size of possible extension queue 1468. Compared 408623 event pairs, 14773 based on Foata normal form. 0/58624 useless extension candidates. Maximal degree in co-relation 146077. Up to 36527 conditions per place. [2025-04-13 19:39:46,532 INFO L140 encePairwiseOnDemand]: 44/51 looper letters, 75 selfloop transitions, 8 changer transitions 0/89 dead transitions. [2025-04-13 19:39:46,532 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 89 transitions, 434 flow [2025-04-13 19:39:46,532 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-13 19:39:46,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-04-13 19:39:46,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 101 transitions. [2025-04-13 19:39:46,534 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.6601307189542484 [2025-04-13 19:39:46,534 INFO L175 Difference]: Start difference. First operand has 53 places, 49 transitions, 146 flow. Second operand 3 states and 101 transitions. [2025-04-13 19:39:46,534 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 89 transitions, 434 flow [2025-04-13 19:39:46,546 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 89 transitions, 434 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-04-13 19:39:46,547 INFO L231 Difference]: Finished difference. Result has 57 places, 56 transitions, 220 flow [2025-04-13 19:39:46,548 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=220, PETRI_PLACES=57, PETRI_TRANSITIONS=56} [2025-04-13 19:39:46,548 INFO L279 CegarLoopForPetriNet]: 50 programPoint places, 7 predicate places. [2025-04-13 19:39:46,548 INFO L485 AbstractCegarLoop]: Abstraction has has 57 places, 56 transitions, 220 flow [2025-04-13 19:39:46,548 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 19:39:46,548 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-13 19:39:46,548 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 19:39:46,548 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-04-13 19:39:46,549 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2025-04-13 19:39:46,549 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 19:39:46,549 INFO L85 PathProgramCache]: Analyzing trace with hash 282334320, now seen corresponding path program 1 times [2025-04-13 19:39:46,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 19:39:46,549 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157059814] [2025-04-13 19:39:46,549 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 19:39:46,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 19:39:46,568 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-04-13 19:39:46,572 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-04-13 19:39:46,572 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 19:39:46,572 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 19:39:46,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 19:39:46,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 19:39:46,691 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157059814] [2025-04-13 19:39:46,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1157059814] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 19:39:46,692 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 19:39:46,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-04-13 19:39:46,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332345790] [2025-04-13 19:39:46,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 19:39:46,692 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-04-13 19:39:46,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 19:39:46,692 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-04-13 19:39:46,692 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-04-13 19:39:46,692 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 51 [2025-04-13 19:39:46,693 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 56 transitions, 220 flow. Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 19:39:46,693 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-13 19:39:46,693 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 51 [2025-04-13 19:39:46,693 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-13 19:39:49,676 INFO L116 PetriNetUnfolderBase]: 44793/62599 cut-off events. [2025-04-13 19:39:49,677 INFO L117 PetriNetUnfolderBase]: For 40948/40948 co-relation queries the response was YES. [2025-04-13 19:39:49,777 INFO L83 FinitePrefix]: Finished finitePrefix Result has 153645 conditions, 62599 events. 44793/62599 cut-off events. For 40948/40948 co-relation queries the response was YES. Maximal size of possible extension queue 1438. Compared 389858 event pairs, 7468 based on Foata normal form. 751/58955 useless extension candidates. Maximal degree in co-relation 153627. Up to 28157 conditions per place. [2025-04-13 19:39:49,936 INFO L140 encePairwiseOnDemand]: 43/51 looper letters, 114 selfloop transitions, 16 changer transitions 0/136 dead transitions. [2025-04-13 19:39:49,936 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 136 transitions, 720 flow [2025-04-13 19:39:49,937 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-04-13 19:39:49,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-04-13 19:39:49,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 164 transitions. [2025-04-13 19:39:49,938 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.6431372549019608 [2025-04-13 19:39:49,938 INFO L175 Difference]: Start difference. First operand has 57 places, 56 transitions, 220 flow. Second operand 5 states and 164 transitions. [2025-04-13 19:39:49,938 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 136 transitions, 720 flow [2025-04-13 19:39:49,994 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 136 transitions, 696 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-04-13 19:39:49,995 INFO L231 Difference]: Finished difference. Result has 62 places, 64 transitions, 308 flow [2025-04-13 19:39:49,995 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=204, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=308, PETRI_PLACES=62, PETRI_TRANSITIONS=64} [2025-04-13 19:39:49,996 INFO L279 CegarLoopForPetriNet]: 50 programPoint places, 12 predicate places. [2025-04-13 19:39:49,996 INFO L485 AbstractCegarLoop]: Abstraction has has 62 places, 64 transitions, 308 flow [2025-04-13 19:39:49,996 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 19:39:49,996 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-13 19:39:49,996 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 19:39:49,996 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-04-13 19:39:49,996 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2025-04-13 19:39:49,997 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 19:39:49,997 INFO L85 PathProgramCache]: Analyzing trace with hash -1217481494, now seen corresponding path program 1 times [2025-04-13 19:39:49,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 19:39:49,997 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794025918] [2025-04-13 19:39:49,997 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 19:39:49,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 19:39:50,011 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-04-13 19:39:50,015 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-04-13 19:39:50,015 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 19:39:50,015 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 19:39:50,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 19:39:50,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 19:39:50,060 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794025918] [2025-04-13 19:39:50,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [794025918] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 19:39:50,060 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 19:39:50,060 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-04-13 19:39:50,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234522000] [2025-04-13 19:39:50,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 19:39:50,061 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-04-13 19:39:50,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 19:39:50,061 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-04-13 19:39:50,061 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-13 19:39:50,061 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 51 [2025-04-13 19:39:50,061 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 64 transitions, 308 flow. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 19:39:50,061 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-13 19:39:50,061 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 51 [2025-04-13 19:39:50,062 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-13 19:39:54,666 INFO L116 PetriNetUnfolderBase]: 70515/98959 cut-off events. [2025-04-13 19:39:54,666 INFO L117 PetriNetUnfolderBase]: For 87049/87049 co-relation queries the response was YES. [2025-04-13 19:39:54,888 INFO L83 FinitePrefix]: Finished finitePrefix Result has 264802 conditions, 98959 events. 70515/98959 cut-off events. For 87049/87049 co-relation queries the response was YES. Maximal size of possible extension queue 2474. Compared 671082 event pairs, 15993 based on Foata normal form. 3914/95868 useless extension candidates. Maximal degree in co-relation 264781. Up to 57751 conditions per place. [2025-04-13 19:39:55,404 INFO L140 encePairwiseOnDemand]: 40/51 looper letters, 100 selfloop transitions, 11 changer transitions 0/117 dead transitions. [2025-04-13 19:39:55,404 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 117 transitions, 805 flow [2025-04-13 19:39:55,405 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-13 19:39:55,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-04-13 19:39:55,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 101 transitions. [2025-04-13 19:39:55,405 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.6601307189542484 [2025-04-13 19:39:55,405 INFO L175 Difference]: Start difference. First operand has 62 places, 64 transitions, 308 flow. Second operand 3 states and 101 transitions. [2025-04-13 19:39:55,405 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 117 transitions, 805 flow [2025-04-13 19:39:55,755 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 117 transitions, 805 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-04-13 19:39:55,756 INFO L231 Difference]: Finished difference. Result has 65 places, 72 transitions, 373 flow [2025-04-13 19:39:55,756 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=308, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=373, PETRI_PLACES=65, PETRI_TRANSITIONS=72} [2025-04-13 19:39:55,757 INFO L279 CegarLoopForPetriNet]: 50 programPoint places, 15 predicate places. [2025-04-13 19:39:55,757 INFO L485 AbstractCegarLoop]: Abstraction has has 65 places, 72 transitions, 373 flow [2025-04-13 19:39:55,757 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 19:39:55,757 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-13 19:39:55,757 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 19:39:55,757 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-04-13 19:39:55,757 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting disposeErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2025-04-13 19:39:55,758 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 19:39:55,758 INFO L85 PathProgramCache]: Analyzing trace with hash 460976744, now seen corresponding path program 1 times [2025-04-13 19:39:55,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 19:39:55,758 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1501077983] [2025-04-13 19:39:55,758 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 19:39:55,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 19:39:55,767 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-04-13 19:39:55,773 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-04-13 19:39:55,773 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 19:39:55,773 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 19:39:55,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 19:39:55,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 19:39:55,876 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1501077983] [2025-04-13 19:39:55,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1501077983] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 19:39:55,877 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 19:39:55,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-04-13 19:39:55,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914029546] [2025-04-13 19:39:55,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 19:39:55,877 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-04-13 19:39:55,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 19:39:55,877 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-04-13 19:39:55,877 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-04-13 19:39:55,878 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 51 [2025-04-13 19:39:55,878 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 72 transitions, 373 flow. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 19:39:55,878 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-13 19:39:55,878 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 51 [2025-04-13 19:39:55,878 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-13 19:40:10,834 INFO L116 PetriNetUnfolderBase]: 191407/269099 cut-off events. [2025-04-13 19:40:10,835 INFO L117 PetriNetUnfolderBase]: For 330434/331764 co-relation queries the response was YES. [2025-04-13 19:40:11,495 INFO L83 FinitePrefix]: Finished finitePrefix Result has 832529 conditions, 269099 events. 191407/269099 cut-off events. For 330434/331764 co-relation queries the response was YES. Maximal size of possible extension queue 5449. Compared 1979782 event pairs, 29612 based on Foata normal form. 14360/263309 useless extension candidates. Maximal degree in co-relation 832506. Up to 68392 conditions per place. [2025-04-13 19:40:12,666 INFO L140 encePairwiseOnDemand]: 39/51 looper letters, 409 selfloop transitions, 65 changer transitions 0/480 dead transitions. [2025-04-13 19:40:12,667 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 480 transitions, 3129 flow [2025-04-13 19:40:12,667 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-04-13 19:40:12,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2025-04-13 19:40:12,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 475 transitions. [2025-04-13 19:40:12,668 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.7164404223227753 [2025-04-13 19:40:12,669 INFO L175 Difference]: Start difference. First operand has 65 places, 72 transitions, 373 flow. Second operand 13 states and 475 transitions. [2025-04-13 19:40:12,669 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 480 transitions, 3129 flow [2025-04-13 19:40:19,000 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 480 transitions, 3013 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-04-13 19:40:19,003 INFO L231 Difference]: Finished difference. Result has 88 places, 133 transitions, 1148 flow [2025-04-13 19:40:19,004 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=354, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1148, PETRI_PLACES=88, PETRI_TRANSITIONS=133} [2025-04-13 19:40:19,004 INFO L279 CegarLoopForPetriNet]: 50 programPoint places, 38 predicate places. [2025-04-13 19:40:19,004 INFO L485 AbstractCegarLoop]: Abstraction has has 88 places, 133 transitions, 1148 flow [2025-04-13 19:40:19,004 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 19:40:19,004 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-13 19:40:19,004 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 19:40:19,004 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-04-13 19:40:19,005 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2025-04-13 19:40:19,005 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 19:40:19,005 INFO L85 PathProgramCache]: Analyzing trace with hash 586492599, now seen corresponding path program 1 times [2025-04-13 19:40:19,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 19:40:19,005 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566031875] [2025-04-13 19:40:19,005 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 19:40:19,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 19:40:19,014 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-04-13 19:40:19,020 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-04-13 19:40:19,020 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 19:40:19,020 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 19:40:19,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 19:40:19,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 19:40:19,167 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566031875] [2025-04-13 19:40:19,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1566031875] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 19:40:19,167 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 19:40:19,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-04-13 19:40:19,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496846451] [2025-04-13 19:40:19,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 19:40:19,167 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-04-13 19:40:19,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 19:40:19,168 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-04-13 19:40:19,168 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-04-13 19:40:19,168 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 51 [2025-04-13 19:40:19,168 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 133 transitions, 1148 flow. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 19:40:19,168 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-13 19:40:19,168 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 51 [2025-04-13 19:40:19,168 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-13 19:40:19,779 INFO L116 PetriNetUnfolderBase]: 7912/11842 cut-off events. [2025-04-13 19:40:19,780 INFO L117 PetriNetUnfolderBase]: For 38175/38367 co-relation queries the response was YES. [2025-04-13 19:40:19,810 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39526 conditions, 11842 events. 7912/11842 cut-off events. For 38175/38367 co-relation queries the response was YES. Maximal size of possible extension queue 274. Compared 64918 event pairs, 1054 based on Foata normal form. 911/11174 useless extension candidates. Maximal degree in co-relation 39490. Up to 9867 conditions per place. [2025-04-13 19:40:19,820 INFO L140 encePairwiseOnDemand]: 44/51 looper letters, 0 selfloop transitions, 0 changer transitions 83/83 dead transitions. [2025-04-13 19:40:19,820 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 83 transitions, 670 flow [2025-04-13 19:40:19,821 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-04-13 19:40:19,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-04-13 19:40:19,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 86 transitions. [2025-04-13 19:40:19,821 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.4215686274509804 [2025-04-13 19:40:19,821 INFO L175 Difference]: Start difference. First operand has 88 places, 133 transitions, 1148 flow. Second operand 4 states and 86 transitions. [2025-04-13 19:40:19,821 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 83 transitions, 670 flow [2025-04-13 19:40:19,982 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 83 transitions, 598 flow, removed 24 selfloop flow, removed 9 redundant places. [2025-04-13 19:40:19,983 INFO L231 Difference]: Finished difference. Result has 71 places, 0 transitions, 0 flow [2025-04-13 19:40:19,983 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=358, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=71, PETRI_TRANSITIONS=0} [2025-04-13 19:40:19,983 INFO L279 CegarLoopForPetriNet]: 50 programPoint places, 21 predicate places. [2025-04-13 19:40:19,983 INFO L485 AbstractCegarLoop]: Abstraction has has 71 places, 0 transitions, 0 flow [2025-04-13 19:40:19,983 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 19:40:19,985 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (5 of 6 remaining) [2025-04-13 19:40:19,985 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 6 remaining) [2025-04-13 19:40:19,985 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 6 remaining) [2025-04-13 19:40:19,985 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 6 remaining) [2025-04-13 19:40:19,985 INFO L790 garLoopResultBuilder]: Registering result SAFE for location disposeErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 6 remaining) [2025-04-13 19:40:19,986 INFO L790 garLoopResultBuilder]: Registering result SAFE for location disposeErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2025-04-13 19:40:19,986 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-04-13 19:40:19,986 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2025-04-13 19:40:19,989 INFO L242 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2025-04-13 19:40:19,989 INFO L171 ceAbstractionStarter]: Computing trace abstraction results [2025-04-13 19:40:19,993 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.04 07:40:19 BasicIcfg [2025-04-13 19:40:19,993 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-04-13 19:40:19,993 INFO L158 Benchmark]: Toolchain (without parser) took 41188.97ms. Allocated memory was 142.6MB in the beginning and 6.9GB in the end (delta: 6.8GB). Free memory was 101.0MB in the beginning and 2.6GB in the end (delta: -2.5GB). Peak memory consumption was 4.3GB. Max. memory is 8.0GB. [2025-04-13 19:40:19,994 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 155.2MB. Free memory is still 85.0MB. There was no memory consumed. Max. memory is 8.0GB. [2025-04-13 19:40:19,994 INFO L158 Benchmark]: CACSL2BoogieTranslator took 496.78ms. Allocated memory is still 142.6MB. Free memory was 101.0MB in the beginning and 68.3MB in the end (delta: 32.7MB). Peak memory consumption was 33.6MB. Max. memory is 8.0GB. [2025-04-13 19:40:19,994 INFO L158 Benchmark]: Boogie Procedure Inliner took 50.86ms. Allocated memory is still 142.6MB. Free memory was 67.8MB in the beginning and 65.2MB in the end (delta: 2.6MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2025-04-13 19:40:19,994 INFO L158 Benchmark]: Boogie Preprocessor took 55.75ms. Allocated memory is still 142.6MB. Free memory was 65.2MB in the beginning and 62.5MB in the end (delta: 2.7MB). There was no memory consumed. Max. memory is 8.0GB. [2025-04-13 19:40:19,994 INFO L158 Benchmark]: RCFGBuilder took 546.95ms. Allocated memory is still 142.6MB. Free memory was 62.5MB in the beginning and 86.8MB in the end (delta: -24.3MB). Peak memory consumption was 45.3MB. Max. memory is 8.0GB. [2025-04-13 19:40:19,994 INFO L158 Benchmark]: TraceAbstraction took 40034.49ms. Allocated memory was 142.6MB in the beginning and 6.9GB in the end (delta: 6.8GB). Free memory was 86.1MB in the beginning and 2.6GB in the end (delta: -2.5GB). Peak memory consumption was 4.2GB. Max. memory is 8.0GB. [2025-04-13 19:40:19,995 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 155.2MB. Free memory is still 85.0MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 496.78ms. Allocated memory is still 142.6MB. Free memory was 101.0MB in the beginning and 68.3MB in the end (delta: 32.7MB). Peak memory consumption was 33.6MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 50.86ms. Allocated memory is still 142.6MB. Free memory was 67.8MB in the beginning and 65.2MB in the end (delta: 2.6MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * Boogie Preprocessor took 55.75ms. Allocated memory is still 142.6MB. Free memory was 65.2MB in the beginning and 62.5MB in the end (delta: 2.7MB). There was no memory consumed. Max. memory is 8.0GB. * RCFGBuilder took 546.95ms. Allocated memory is still 142.6MB. Free memory was 62.5MB in the beginning and 86.8MB in the end (delta: -24.3MB). Peak memory consumption was 45.3MB. Max. memory is 8.0GB. * TraceAbstraction took 40034.49ms. Allocated memory was 142.6MB in the beginning and 6.9GB in the end (delta: 6.8GB). Free memory was 86.1MB in the beginning and 2.6GB in the end (delta: -2.5GB). Peak memory consumption was 4.2GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 19]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - PositiveResult [Line: 19]: 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, 74 locations, 84 edges, 6 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: 39.9s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 38.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 574 SdHoareTripleChecker+Valid, 0.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 574 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 46 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 950 IncrementalHoareTripleChecker+Invalid, 996 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 46 mSolverCounterUnsat, 0 mSDtfsCounter, 950 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 26 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1148occurred in iteration=5, InterpolantAutomatonStates: 33, 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, 83 NumberOfCodeBlocks, 83 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 77 ConstructedInterpolants, 0 QuantifiedInterpolants, 357 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 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 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2025-04-13 19:40:20,014 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request...