/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_IcfgBuilder.xml -s ../benchexec/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.automaton.type.used.in.concurrency.analysis PETRI_NET --preprocessor.replace.while.statements.and.if-then-else.statements false -i ../../../trunk/examples/svcomp/goblint-regression/13-privatized_68-pfscan_protected_loop_minimal_interval_true.i -------------------------------------------------------------------------------- This is Ultimate 0.3.0-wip.dk.cfg-lbe-improvements-94356ea-m [2025-04-14 00:13:54,974 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-04-14 00:13:55,029 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 [2025-04-14 00:13:55,035 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-04-14 00:13:55,035 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-04-14 00:13:55,050 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-04-14 00:13:55,050 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-04-14 00:13:55,050 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-04-14 00:13:55,050 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-04-14 00:13:55,051 INFO L153 SettingsManager]: * Use memory slicer=true [2025-04-14 00:13:55,051 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-04-14 00:13:55,051 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-04-14 00:13:55,051 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-04-14 00:13:55,051 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-04-14 00:13:55,051 INFO L153 SettingsManager]: * Use SBE=true [2025-04-14 00:13:55,051 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-04-14 00:13:55,051 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-04-14 00:13:55,051 INFO L153 SettingsManager]: * sizeof long=4 [2025-04-14 00:13:55,051 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-04-14 00:13:55,052 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-04-14 00:13:55,052 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-04-14 00:13:55,053 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-04-14 00:13:55,053 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-04-14 00:13:55,053 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-04-14 00:13:55,053 INFO L153 SettingsManager]: * sizeof long double=12 [2025-04-14 00:13:55,053 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-04-14 00:13:55,053 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-04-14 00:13:55,053 INFO L153 SettingsManager]: * Use constant arrays=true [2025-04-14 00:13:55,053 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-04-14 00:13:55,053 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-14 00:13:55,053 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-14 00:13:55,054 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-14 00:13:55,054 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-14 00:13:55,054 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-04-14 00:13:55,054 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-14 00:13:55,054 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-14 00:13:55,054 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-14 00:13:55,054 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-14 00:13:55,054 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-04-14 00:13:55,054 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-04-14 00:13:55,054 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-04-14 00:13:55,054 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-04-14 00:13:55,054 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-04-14 00:13:55,054 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-04-14 00:13:55,055 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-04-14 00:13:55,055 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-04-14 00:13:55,055 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-04-14 00:13:55,055 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 Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.preprocessor: Replace while statements and if-then-else statements -> false [2025-04-14 00:13:55,280 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-04-14 00:13:55,288 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-04-14 00:13:55,290 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-04-14 00:13:55,291 INFO L270 PluginConnector]: Initializing CDTParser... [2025-04-14 00:13:55,291 INFO L274 PluginConnector]: CDTParser initialized [2025-04-14 00:13:55,292 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/13-privatized_68-pfscan_protected_loop_minimal_interval_true.i [2025-04-14 00:13:56,604 INFO L538 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b851b5bc7/e4c0bc1982774dc38a5555da8b701eae/FLAG0a31b5cb2 [2025-04-14 00:13:56,834 INFO L389 CDTParser]: Found 1 translation units. [2025-04-14 00:13:56,835 INFO L178 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_68-pfscan_protected_loop_minimal_interval_true.i [2025-04-14 00:13:56,848 INFO L432 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b851b5bc7/e4c0bc1982774dc38a5555da8b701eae/FLAG0a31b5cb2 [2025-04-14 00:13:57,654 INFO L440 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b851b5bc7/e4c0bc1982774dc38a5555da8b701eae [2025-04-14 00:13:57,658 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-04-14 00:13:57,660 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2025-04-14 00:13:57,661 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-04-14 00:13:57,661 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-04-14 00:13:57,664 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-04-14 00:13:57,664 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.04 12:13:57" (1/1) ... [2025-04-14 00:13:57,665 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@625e6b89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:13:57, skipping insertion in model container [2025-04-14 00:13:57,665 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.04 12:13:57" (1/1) ... [2025-04-14 00:13:57,689 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-04-14 00:13:57,860 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_68-pfscan_protected_loop_minimal_interval_true.i[1115,1128] [2025-04-14 00:13:57,991 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-04-14 00:13:58,006 INFO L200 MainTranslator]: Completed pre-run [2025-04-14 00:13:58,027 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_68-pfscan_protected_loop_minimal_interval_true.i[1115,1128] [2025-04-14 00:13:58,074 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-04-14 00:13:58,101 INFO L204 MainTranslator]: Completed translation [2025-04-14 00:13:58,102 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:13:58 WrapperNode [2025-04-14 00:13:58,102 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-04-14 00:13:58,103 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-04-14 00:13:58,103 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-04-14 00:13:58,103 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-04-14 00:13:58,107 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:13:58" (1/1) ... [2025-04-14 00:13:58,118 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:13:58" (1/1) ... [2025-04-14 00:13:58,136 INFO L138 Inliner]: procedures = 165, calls = 34, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 112 [2025-04-14 00:13:58,137 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-04-14 00:13:58,137 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-04-14 00:13:58,137 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-04-14 00:13:58,137 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-04-14 00:13:58,143 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:13:58" (1/1) ... [2025-04-14 00:13:58,143 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:13:58" (1/1) ... [2025-04-14 00:13:58,146 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:13:58" (1/1) ... [2025-04-14 00:13:58,163 INFO L175 MemorySlicer]: Split 18 memory accesses to 2 slices as follows [2, 16]. 89 percent of accesses are in the largest equivalence class. The 8 initializations are split as follows [2, 6]. The 3 writes are split as follows [0, 3]. [2025-04-14 00:13:58,164 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:13:58" (1/1) ... [2025-04-14 00:13:58,164 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:13:58" (1/1) ... [2025-04-14 00:13:58,175 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:13:58" (1/1) ... [2025-04-14 00:13:58,180 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:13:58" (1/1) ... [2025-04-14 00:13:58,181 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:13:58" (1/1) ... [2025-04-14 00:13:58,182 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:13:58" (1/1) ... [2025-04-14 00:13:58,189 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-04-14 00:13:58,190 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-04-14 00:13:58,190 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-04-14 00:13:58,190 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-04-14 00:13:58,191 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:13:58" (1/1) ... [2025-04-14 00:13:58,201 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-14 00:13:58,211 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-14 00:13:58,223 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) [2025-04-14 00:13:58,226 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 [2025-04-14 00:13:58,243 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-04-14 00:13:58,243 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-04-14 00:13:58,243 INFO L130 BoogieDeclarations]: Found specification of procedure worker [2025-04-14 00:13:58,243 INFO L138 BoogieDeclarations]: Found implementation of procedure worker [2025-04-14 00:13:58,243 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-04-14 00:13:58,243 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-04-14 00:13:58,243 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2025-04-14 00:13:58,243 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-04-14 00:13:58,243 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-04-14 00:13:58,243 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-04-14 00:13:58,243 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2025-04-14 00:13:58,243 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-04-14 00:13:58,243 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-04-14 00:13:58,244 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-04-14 00:13:58,354 INFO L256 CfgBuilder]: Building ICFG [2025-04-14 00:13:58,355 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-04-14 00:13:58,524 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-04-14 00:13:58,525 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-04-14 00:13:58,525 INFO L318 CfgBuilder]: Performing block encoding [2025-04-14 00:13:58,754 WARN L179 LargeBlockEncoding]: Complex 3:2 sequential composition. Such compositions can cause exponential blowup and should not occur in structured programs. [2025-04-14 00:13:58,759 WARN L179 LargeBlockEncoding]: Complex 2:2 sequential composition. Such compositions can cause exponential blowup and should not occur in structured programs. [2025-04-14 00:13:58,766 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-04-14 00:13:58,766 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 14.04 12:13:58 BoogieIcfgContainer [2025-04-14 00:13:58,766 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-04-14 00:13:58,770 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-04-14 00:13:58,770 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-04-14 00:13:58,773 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-04-14 00:13:58,773 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.04 12:13:57" (1/3) ... [2025-04-14 00:13:58,773 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26278eb4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.04 12:13:58, skipping insertion in model container [2025-04-14 00:13:58,773 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:13:58" (2/3) ... [2025-04-14 00:13:58,774 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26278eb4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.04 12:13:58, skipping insertion in model container [2025-04-14 00:13:58,774 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 14.04 12:13:58" (3/3) ... [2025-04-14 00:13:58,775 INFO L128 eAbstractionObserver]: Analyzing ICFG 13-privatized_68-pfscan_protected_loop_minimal_interval_true.i [2025-04-14 00:13:58,785 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-04-14 00:13:58,786 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG 13-privatized_68-pfscan_protected_loop_minimal_interval_true.i that has 2 procedures, 19 locations, 24 edges, 1 initial locations, 3 loop locations, and 2 error locations. [2025-04-14 00:13:58,786 INFO L490 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-04-14 00:13:58,823 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-04-14 00:13:58,850 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 22 places, 25 transitions, 54 flow [2025-04-14 00:13:58,868 INFO L116 PetriNetUnfolderBase]: 7/24 cut-off events. [2025-04-14 00:13:58,870 INFO L117 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-04-14 00:13:58,873 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28 conditions, 24 events. 7/24 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 36 event pairs, 0 based on Foata normal form. 0/15 useless extension candidates. Maximal degree in co-relation 22. Up to 3 conditions per place. [2025-04-14 00:13:58,873 INFO L82 GeneralOperation]: Start removeDead. Operand has 22 places, 25 transitions, 54 flow [2025-04-14 00:13:58,874 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 21 places, 24 transitions, 51 flow [2025-04-14 00:13:58,882 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-04-14 00:13:58,889 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;@7e81d588, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-14 00:13:58,889 INFO L341 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2025-04-14 00:13:58,897 INFO L177 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-04-14 00:13:58,897 INFO L116 PetriNetUnfolderBase]: 1/11 cut-off events. [2025-04-14 00:13:58,897 INFO L117 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-04-14 00:13:58,897 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 00:13:58,897 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2025-04-14 00:13:58,898 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting workerErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr1ASSERT_VIOLATIONERROR_FUNCTION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2025-04-14 00:13:58,901 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 00:13:58,903 INFO L85 PathProgramCache]: Analyzing trace with hash 765611210, now seen corresponding path program 1 times [2025-04-14 00:13:58,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 00:13:58,909 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063944868] [2025-04-14 00:13:58,909 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-14 00:13:58,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 00:13:58,968 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-04-14 00:13:58,992 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-04-14 00:13:58,993 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-14 00:13:58,993 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 00:13:59,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 00:13:59,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 00:13:59,271 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063944868] [2025-04-14 00:13:59,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1063944868] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-14 00:13:59,271 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-14 00:13:59,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-04-14 00:13:59,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237075640] [2025-04-14 00:13:59,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-14 00:13:59,277 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-04-14 00:13:59,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 00:13:59,297 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-04-14 00:13:59,297 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-04-14 00:13:59,298 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 2 out of 25 [2025-04-14 00:13:59,300 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 21 places, 24 transitions, 51 flow. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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) [2025-04-14 00:13:59,300 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 00:13:59,300 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 2 of 25 [2025-04-14 00:13:59,301 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 00:13:59,431 INFO L116 PetriNetUnfolderBase]: 68/125 cut-off events. [2025-04-14 00:13:59,431 INFO L117 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-04-14 00:13:59,431 INFO L83 FinitePrefix]: Finished finitePrefix Result has 251 conditions, 125 events. 68/125 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 306 event pairs, 12 based on Foata normal form. 0/94 useless extension candidates. Maximal degree in co-relation 242. Up to 80 conditions per place. [2025-04-14 00:13:59,433 INFO L140 encePairwiseOnDemand]: 15/25 looper letters, 22 selfloop transitions, 6 changer transitions 3/32 dead transitions. [2025-04-14 00:13:59,433 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 32 transitions, 129 flow [2025-04-14 00:13:59,434 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-04-14 00:13:59,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-04-14 00:13:59,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 54 transitions. [2025-04-14 00:13:59,441 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.432 [2025-04-14 00:13:59,442 INFO L175 Difference]: Start difference. First operand has 21 places, 24 transitions, 51 flow. Second operand 5 states and 54 transitions. [2025-04-14 00:13:59,442 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 32 transitions, 129 flow [2025-04-14 00:13:59,446 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 20 places, 32 transitions, 128 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-04-14 00:13:59,449 INFO L231 Difference]: Finished difference. Result has 24 places, 21 transitions, 82 flow [2025-04-14 00:13:59,451 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=36, PETRI_DIFFERENCE_MINUEND_PLACES=16, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=82, PETRI_PLACES=24, PETRI_TRANSITIONS=21} [2025-04-14 00:13:59,453 INFO L279 CegarLoopForPetriNet]: 21 programPoint places, 3 predicate places. [2025-04-14 00:13:59,454 INFO L485 AbstractCegarLoop]: Abstraction has has 24 places, 21 transitions, 82 flow [2025-04-14 00:13:59,454 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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) [2025-04-14 00:13:59,454 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 00:13:59,454 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-14 00:13:59,454 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-04-14 00:13:59,454 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting workerErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr1ASSERT_VIOLATIONERROR_FUNCTION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2025-04-14 00:13:59,455 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 00:13:59,455 INFO L85 PathProgramCache]: Analyzing trace with hash -903190769, now seen corresponding path program 1 times [2025-04-14 00:13:59,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 00:13:59,455 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801255773] [2025-04-14 00:13:59,455 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-14 00:13:59,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 00:13:59,465 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-04-14 00:13:59,472 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-04-14 00:13:59,472 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-14 00:13:59,472 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 00:13:59,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 00:13:59,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 00:13:59,706 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801255773] [2025-04-14 00:13:59,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [801255773] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-14 00:13:59,706 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-14 00:13:59,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-04-14 00:13:59,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700416726] [2025-04-14 00:13:59,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-14 00:13:59,707 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-04-14 00:13:59,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 00:13:59,707 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-04-14 00:13:59,708 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-04-14 00:13:59,708 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 2 out of 25 [2025-04-14 00:13:59,708 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 21 transitions, 82 flow. Second operand has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 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) [2025-04-14 00:13:59,708 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 00:13:59,708 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 2 of 25 [2025-04-14 00:13:59,708 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 00:13:59,872 INFO L116 PetriNetUnfolderBase]: 81/150 cut-off events. [2025-04-14 00:13:59,872 INFO L117 PetriNetUnfolderBase]: For 105/105 co-relation queries the response was YES. [2025-04-14 00:13:59,874 INFO L83 FinitePrefix]: Finished finitePrefix Result has 423 conditions, 150 events. 81/150 cut-off events. For 105/105 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 454 event pairs, 17 based on Foata normal form. 5/135 useless extension candidates. Maximal degree in co-relation 409. Up to 105 conditions per place. [2025-04-14 00:13:59,875 INFO L140 encePairwiseOnDemand]: 18/25 looper letters, 30 selfloop transitions, 7 changer transitions 0/38 dead transitions. [2025-04-14 00:13:59,875 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 38 transitions, 210 flow [2025-04-14 00:13:59,876 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-04-14 00:13:59,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-04-14 00:13:59,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 48 transitions. [2025-04-14 00:13:59,877 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.32 [2025-04-14 00:13:59,877 INFO L175 Difference]: Start difference. First operand has 24 places, 21 transitions, 82 flow. Second operand 6 states and 48 transitions. [2025-04-14 00:13:59,877 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 38 transitions, 210 flow [2025-04-14 00:13:59,878 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 38 transitions, 210 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-04-14 00:13:59,879 INFO L231 Difference]: Finished difference. Result has 31 places, 24 transitions, 128 flow [2025-04-14 00:13:59,879 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=128, PETRI_PLACES=31, PETRI_TRANSITIONS=24} [2025-04-14 00:13:59,879 INFO L279 CegarLoopForPetriNet]: 21 programPoint places, 10 predicate places. [2025-04-14 00:13:59,881 INFO L485 AbstractCegarLoop]: Abstraction has has 31 places, 24 transitions, 128 flow [2025-04-14 00:13:59,881 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 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) [2025-04-14 00:13:59,881 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 00:13:59,881 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-14 00:13:59,882 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-04-14 00:13:59,882 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting workerErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr1ASSERT_VIOLATIONERROR_FUNCTION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2025-04-14 00:13:59,883 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 00:13:59,884 INFO L85 PathProgramCache]: Analyzing trace with hash -957126856, now seen corresponding path program 1 times [2025-04-14 00:13:59,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 00:13:59,884 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281781741] [2025-04-14 00:13:59,884 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-14 00:13:59,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 00:13:59,894 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-04-14 00:13:59,903 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-04-14 00:13:59,903 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-14 00:13:59,903 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 00:14:00,112 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-14 00:14:00,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 00:14:00,112 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281781741] [2025-04-14 00:14:00,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [281781741] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-14 00:14:00,112 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-14 00:14:00,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-04-14 00:14:00,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974251665] [2025-04-14 00:14:00,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-14 00:14:00,113 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-04-14 00:14:00,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 00:14:00,113 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-04-14 00:14:00,113 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-04-14 00:14:00,113 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 2 out of 25 [2025-04-14 00:14:00,114 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 24 transitions, 128 flow. Second operand has 6 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 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) [2025-04-14 00:14:00,114 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 00:14:00,114 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 2 of 25 [2025-04-14 00:14:00,114 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 00:14:00,234 INFO L116 PetriNetUnfolderBase]: 81/162 cut-off events. [2025-04-14 00:14:00,235 INFO L117 PetriNetUnfolderBase]: For 249/249 co-relation queries the response was YES. [2025-04-14 00:14:00,235 INFO L83 FinitePrefix]: Finished finitePrefix Result has 494 conditions, 162 events. 81/162 cut-off events. For 249/249 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 542 event pairs, 21 based on Foata normal form. 10/155 useless extension candidates. Maximal degree in co-relation 476. Up to 109 conditions per place. [2025-04-14 00:14:00,236 INFO L140 encePairwiseOnDemand]: 18/25 looper letters, 30 selfloop transitions, 8 changer transitions 0/39 dead transitions. [2025-04-14 00:14:00,236 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 39 transitions, 249 flow [2025-04-14 00:14:00,236 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-04-14 00:14:00,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-04-14 00:14:00,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 48 transitions. [2025-04-14 00:14:00,237 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.32 [2025-04-14 00:14:00,237 INFO L175 Difference]: Start difference. First operand has 31 places, 24 transitions, 128 flow. Second operand 6 states and 48 transitions. [2025-04-14 00:14:00,237 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 39 transitions, 249 flow [2025-04-14 00:14:00,238 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 39 transitions, 238 flow, removed 2 selfloop flow, removed 2 redundant places. [2025-04-14 00:14:00,239 INFO L231 Difference]: Finished difference. Result has 36 places, 26 transitions, 160 flow [2025-04-14 00:14:00,239 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=160, PETRI_PLACES=36, PETRI_TRANSITIONS=26} [2025-04-14 00:14:00,240 INFO L279 CegarLoopForPetriNet]: 21 programPoint places, 15 predicate places. [2025-04-14 00:14:00,240 INFO L485 AbstractCegarLoop]: Abstraction has has 36 places, 26 transitions, 160 flow [2025-04-14 00:14:00,240 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 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) [2025-04-14 00:14:00,240 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 00:14:00,240 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-14 00:14:00,240 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-04-14 00:14:00,240 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting workerErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr1ASSERT_VIOLATIONERROR_FUNCTION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2025-04-14 00:14:00,241 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 00:14:00,241 INFO L85 PathProgramCache]: Analyzing trace with hash -906909839, now seen corresponding path program 2 times [2025-04-14 00:14:00,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 00:14:00,241 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [838096844] [2025-04-14 00:14:00,241 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-14 00:14:00,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 00:14:00,264 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 9 statements into 1 equivalence classes. [2025-04-14 00:14:00,267 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-04-14 00:14:00,268 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-04-14 00:14:00,268 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 00:14:00,424 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 00:14:00,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 00:14:00,425 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [838096844] [2025-04-14 00:14:00,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [838096844] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-14 00:14:00,425 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-14 00:14:00,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-04-14 00:14:00,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368138620] [2025-04-14 00:14:00,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-14 00:14:00,425 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-04-14 00:14:00,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 00:14:00,426 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-04-14 00:14:00,426 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-04-14 00:14:00,426 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 2 out of 25 [2025-04-14 00:14:00,426 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 26 transitions, 160 flow. Second operand has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 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) [2025-04-14 00:14:00,426 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 00:14:00,426 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 2 of 25 [2025-04-14 00:14:00,426 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 00:14:00,548 INFO L116 PetriNetUnfolderBase]: 91/190 cut-off events. [2025-04-14 00:14:00,548 INFO L117 PetriNetUnfolderBase]: For 395/395 co-relation queries the response was YES. [2025-04-14 00:14:00,550 INFO L83 FinitePrefix]: Finished finitePrefix Result has 598 conditions, 190 events. 91/190 cut-off events. For 395/395 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 596 event pairs, 3 based on Foata normal form. 5/176 useless extension candidates. Maximal degree in co-relation 578. Up to 86 conditions per place. [2025-04-14 00:14:00,553 INFO L140 encePairwiseOnDemand]: 18/25 looper letters, 33 selfloop transitions, 10 changer transitions 0/44 dead transitions. [2025-04-14 00:14:00,553 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 44 transitions, 298 flow [2025-04-14 00:14:00,553 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-04-14 00:14:00,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-04-14 00:14:00,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 51 transitions. [2025-04-14 00:14:00,554 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.34 [2025-04-14 00:14:00,554 INFO L175 Difference]: Start difference. First operand has 36 places, 26 transitions, 160 flow. Second operand 6 states and 51 transitions. [2025-04-14 00:14:00,554 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 44 transitions, 298 flow [2025-04-14 00:14:00,555 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 44 transitions, 280 flow, removed 3 selfloop flow, removed 3 redundant places. [2025-04-14 00:14:00,556 INFO L231 Difference]: Finished difference. Result has 39 places, 27 transitions, 180 flow [2025-04-14 00:14:00,556 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=180, PETRI_PLACES=39, PETRI_TRANSITIONS=27} [2025-04-14 00:14:00,558 INFO L279 CegarLoopForPetriNet]: 21 programPoint places, 18 predicate places. [2025-04-14 00:14:00,558 INFO L485 AbstractCegarLoop]: Abstraction has has 39 places, 27 transitions, 180 flow [2025-04-14 00:14:00,558 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 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) [2025-04-14 00:14:00,558 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 00:14:00,558 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-14 00:14:00,559 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-04-14 00:14:00,559 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting workerErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr1ASSERT_VIOLATIONERROR_FUNCTION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2025-04-14 00:14:00,560 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 00:14:00,560 INFO L85 PathProgramCache]: Analyzing trace with hash 813440800, now seen corresponding path program 1 times [2025-04-14 00:14:00,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 00:14:00,560 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118519254] [2025-04-14 00:14:00,560 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-14 00:14:00,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 00:14:00,570 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-04-14 00:14:00,581 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-04-14 00:14:00,582 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-14 00:14:00,582 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 00:14:00,879 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 00:14:00,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 00:14:00,880 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118519254] [2025-04-14 00:14:00,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1118519254] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-14 00:14:00,880 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1410699422] [2025-04-14 00:14:00,880 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-14 00:14:00,880 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-14 00:14:00,880 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-14 00:14:00,882 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-14 00:14:00,884 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-04-14 00:14:00,934 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-04-14 00:14:00,953 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-04-14 00:14:00,953 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-14 00:14:00,954 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 00:14:00,956 INFO L256 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 28 conjuncts are in the unsatisfiable core [2025-04-14 00:14:00,958 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-14 00:14:01,051 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2025-04-14 00:14:01,100 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 00:14:01,100 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-14 00:14:01,169 INFO L325 Elim1Store]: treesize reduction 10, result has 9.1 percent of original size [2025-04-14 00:14:01,169 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 71 treesize of output 55 [2025-04-14 00:14:01,220 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 00:14:01,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1410699422] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-14 00:14:01,220 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-14 00:14:01,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 13 [2025-04-14 00:14:01,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52535164] [2025-04-14 00:14:01,220 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-14 00:14:01,221 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-04-14 00:14:01,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 00:14:01,221 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-04-14 00:14:01,221 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2025-04-14 00:14:01,222 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 2 out of 25 [2025-04-14 00:14:01,222 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 27 transitions, 180 flow. Second operand has 14 states, 14 states have (on average 4.571428571428571) internal successors, (64), 14 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-14 00:14:01,222 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 00:14:01,222 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 2 of 25 [2025-04-14 00:14:01,222 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 00:14:01,442 INFO L116 PetriNetUnfolderBase]: 156/325 cut-off events. [2025-04-14 00:14:01,442 INFO L117 PetriNetUnfolderBase]: For 911/911 co-relation queries the response was YES. [2025-04-14 00:14:01,443 INFO L83 FinitePrefix]: Finished finitePrefix Result has 971 conditions, 325 events. 156/325 cut-off events. For 911/911 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1243 event pairs, 20 based on Foata normal form. 17/317 useless extension candidates. Maximal degree in co-relation 950. Up to 130 conditions per place. [2025-04-14 00:14:01,444 INFO L140 encePairwiseOnDemand]: 17/25 looper letters, 0 selfloop transitions, 0 changer transitions 59/59 dead transitions. [2025-04-14 00:14:01,444 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 59 transitions, 398 flow [2025-04-14 00:14:01,444 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-04-14 00:14:01,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-04-14 00:14:01,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 70 transitions. [2025-04-14 00:14:01,445 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.35 [2025-04-14 00:14:01,445 INFO L175 Difference]: Start difference. First operand has 39 places, 27 transitions, 180 flow. Second operand 8 states and 70 transitions. [2025-04-14 00:14:01,445 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 59 transitions, 398 flow [2025-04-14 00:14:01,449 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 59 transitions, 371 flow, removed 5 selfloop flow, removed 4 redundant places. [2025-04-14 00:14:01,450 INFO L231 Difference]: Finished difference. Result has 41 places, 0 transitions, 0 flow [2025-04-14 00:14:01,450 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=0, PETRI_PLACES=41, PETRI_TRANSITIONS=0} [2025-04-14 00:14:01,450 INFO L279 CegarLoopForPetriNet]: 21 programPoint places, 20 predicate places. [2025-04-14 00:14:01,450 INFO L485 AbstractCegarLoop]: Abstraction has has 41 places, 0 transitions, 0 flow [2025-04-14 00:14:01,451 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.571428571428571) internal successors, (64), 14 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-14 00:14:01,454 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2025-04-14 00:14:01,454 INFO L790 garLoopResultBuilder]: Registering result SAFE for location workerErr1ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2025-04-14 00:14:01,454 INFO L790 garLoopResultBuilder]: Registering result SAFE for location workerErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 5 remaining) [2025-04-14 00:14:01,455 INFO L790 garLoopResultBuilder]: Registering result SAFE for location workerErr1ASSERT_VIOLATIONERROR_FUNCTION (1 of 5 remaining) [2025-04-14 00:14:01,455 INFO L790 garLoopResultBuilder]: Registering result SAFE for location workerErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining) [2025-04-14 00:14:01,462 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-04-14 00:14:01,659 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-14 00:14:01,660 INFO L422 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1] [2025-04-14 00:14:01,664 INFO L242 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2025-04-14 00:14:01,665 INFO L171 ceAbstractionStarter]: Computing trace abstraction results [2025-04-14 00:14:01,668 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.04 12:14:01 BasicIcfg [2025-04-14 00:14:01,668 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-04-14 00:14:01,668 INFO L158 Benchmark]: Toolchain (without parser) took 4008.97ms. Allocated memory was 125.8MB in the beginning and 293.6MB in the end (delta: 167.8MB). Free memory was 85.6MB in the beginning and 173.9MB in the end (delta: -88.3MB). Peak memory consumption was 77.7MB. Max. memory is 8.0GB. [2025-04-14 00:14:01,668 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 163.6MB. Free memory is still 89.6MB. There was no memory consumed. Max. memory is 8.0GB. [2025-04-14 00:14:01,669 INFO L158 Benchmark]: CACSL2BoogieTranslator took 441.64ms. Allocated memory is still 125.8MB. Free memory was 85.6MB in the beginning and 62.1MB in the end (delta: 23.6MB). Peak memory consumption was 25.2MB. Max. memory is 8.0GB. [2025-04-14 00:14:01,669 INFO L158 Benchmark]: Boogie Procedure Inliner took 34.01ms. Allocated memory is still 125.8MB. Free memory was 62.1MB in the beginning and 60.4MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 8.0GB. [2025-04-14 00:14:01,669 INFO L158 Benchmark]: Boogie Preprocessor took 52.41ms. Allocated memory is still 125.8MB. Free memory was 60.4MB in the beginning and 57.9MB in the end (delta: 2.5MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2025-04-14 00:14:01,669 INFO L158 Benchmark]: IcfgBuilder took 576.27ms. Allocated memory is still 125.8MB. Free memory was 57.9MB in the beginning and 74.2MB in the end (delta: -16.4MB). Peak memory consumption was 44.7MB. Max. memory is 8.0GB. [2025-04-14 00:14:01,669 INFO L158 Benchmark]: TraceAbstraction took 2898.27ms. Allocated memory was 125.8MB in the beginning and 293.6MB in the end (delta: 167.8MB). Free memory was 72.9MB in the beginning and 173.9MB in the end (delta: -101.0MB). Peak memory consumption was 66.5MB. Max. memory is 8.0GB. [2025-04-14 00:14:01,670 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 163.6MB. Free memory is still 89.6MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 441.64ms. Allocated memory is still 125.8MB. Free memory was 85.6MB in the beginning and 62.1MB in the end (delta: 23.6MB). Peak memory consumption was 25.2MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 34.01ms. Allocated memory is still 125.8MB. Free memory was 62.1MB in the beginning and 60.4MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 8.0GB. * Boogie Preprocessor took 52.41ms. Allocated memory is still 125.8MB. Free memory was 60.4MB in the beginning and 57.9MB in the end (delta: 2.5MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * IcfgBuilder took 576.27ms. Allocated memory is still 125.8MB. Free memory was 57.9MB in the beginning and 74.2MB in the end (delta: -16.4MB). Peak memory consumption was 44.7MB. Max. memory is 8.0GB. * TraceAbstraction took 2898.27ms. Allocated memory was 125.8MB in the beginning and 293.6MB in the end (delta: 167.8MB). Free memory was 72.9MB in the beginning and 173.9MB in the end (delta: -101.0MB). Peak memory consumption was 66.5MB. 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 3 procedures, 31 locations, 41 edges, 5 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: 2.8s, OverallIterations: 5, TraceHistogramMax: 2, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 131 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 131 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 32 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 512 IncrementalHoareTripleChecker+Invalid, 544 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 32 mSolverCounterUnsat, 0 mSDtfsCounter, 512 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 57 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=180occurred in iteration=4, InterpolantAutomatonStates: 31, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 62 NumberOfCodeBlocks, 62 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 69 ConstructedInterpolants, 0 QuantifiedInterpolants, 686 SizeOfPredicates, 9 NumberOfNonLiveVariables, 165 ConjunctsInSsa, 28 ConjunctsInUnsatCore, 7 InterpolantComputations, 4 PerfectInterpolantSequences, 1/4 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! [2025-04-14 00:14:01,682 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...