/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/pthread-wmm/safe016_pso.oepc_pso.opt_tso.oepc_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.3.0-wip.dk.cfg-lbe-improvements-94356ea-m [2025-04-14 00:09:13,787 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-04-14 00:09:13,881 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 00:09:13,886 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-04-14 00:09:13,887 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-04-14 00:09:13,916 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-04-14 00:09:13,917 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-04-14 00:09:13,917 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-04-14 00:09:13,917 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-04-14 00:09:13,917 INFO L153 SettingsManager]: * Use memory slicer=true [2025-04-14 00:09:13,917 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-04-14 00:09:13,917 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-04-14 00:09:13,918 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-04-14 00:09:13,918 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-04-14 00:09:13,918 INFO L153 SettingsManager]: * Use SBE=true [2025-04-14 00:09:13,918 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-04-14 00:09:13,918 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-04-14 00:09:13,918 INFO L153 SettingsManager]: * sizeof long=4 [2025-04-14 00:09:13,918 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-04-14 00:09:13,918 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-04-14 00:09:13,918 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-04-14 00:09:13,918 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-04-14 00:09:13,919 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-04-14 00:09:13,919 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-04-14 00:09:13,919 INFO L153 SettingsManager]: * sizeof long double=12 [2025-04-14 00:09:13,919 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-04-14 00:09:13,919 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-04-14 00:09:13,919 INFO L153 SettingsManager]: * Use constant arrays=true [2025-04-14 00:09:13,919 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-04-14 00:09:13,919 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-14 00:09:13,919 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-14 00:09:13,919 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-14 00:09:13,919 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-14 00:09:13,919 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-04-14 00:09:13,919 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-14 00:09:13,920 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-14 00:09:13,920 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-14 00:09:13,920 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-14 00:09:13,920 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-04-14 00:09:13,920 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-04-14 00:09:13,920 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-04-14 00:09:13,920 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-04-14 00:09:13,920 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-04-14 00:09:13,920 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-04-14 00:09:13,920 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-04-14 00:09:13,920 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-04-14 00:09:13,920 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-04-14 00:09:13,921 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 00:09:14,408 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-04-14 00:09:14,430 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-04-14 00:09:14,438 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-04-14 00:09:14,440 INFO L270 PluginConnector]: Initializing CDTParser... [2025-04-14 00:09:14,446 INFO L274 PluginConnector]: CDTParser initialized [2025-04-14 00:09:14,448 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe016_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2025-04-14 00:09:16,944 INFO L538 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bc1d5972b/df499d2dea3f44f29cfae24b2587d7be/FLAGf5656b318 [2025-04-14 00:09:17,418 INFO L389 CDTParser]: Found 1 translation units. [2025-04-14 00:09:17,419 INFO L178 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe016_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2025-04-14 00:09:17,435 INFO L432 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bc1d5972b/df499d2dea3f44f29cfae24b2587d7be/FLAGf5656b318 [2025-04-14 00:09:17,995 INFO L440 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bc1d5972b/df499d2dea3f44f29cfae24b2587d7be [2025-04-14 00:09:18,000 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-04-14 00:09:18,001 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2025-04-14 00:09:18,005 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-04-14 00:09:18,005 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-04-14 00:09:18,010 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-04-14 00:09:18,011 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.04 12:09:17" (1/1) ... [2025-04-14 00:09:18,016 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41f92fa5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:09:18, skipping insertion in model container [2025-04-14 00:09:18,017 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.04 12:09:17" (1/1) ... [2025-04-14 00:09:18,087 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-04-14 00:09:18,380 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe016_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2025-04-14 00:09:18,609 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-04-14 00:09:18,633 INFO L200 MainTranslator]: Completed pre-run [2025-04-14 00:09:18,671 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe016_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2025-04-14 00:09:18,766 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-04-14 00:09:18,826 INFO L204 MainTranslator]: Completed translation [2025-04-14 00:09:18,827 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:09:18 WrapperNode [2025-04-14 00:09:18,827 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-04-14 00:09:18,830 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-04-14 00:09:18,830 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-04-14 00:09:18,831 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-04-14 00:09:18,843 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:09:18" (1/1) ... [2025-04-14 00:09:18,878 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:09:18" (1/1) ... [2025-04-14 00:09:18,916 INFO L138 Inliner]: procedures = 176, calls = 46, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 64 [2025-04-14 00:09:18,917 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-04-14 00:09:18,925 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-04-14 00:09:18,925 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-04-14 00:09:18,925 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-04-14 00:09:18,941 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:09:18" (1/1) ... [2025-04-14 00:09:18,942 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:09:18" (1/1) ... [2025-04-14 00:09:18,949 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:09:18" (1/1) ... [2025-04-14 00:09:18,993 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2025-04-14 00:09:18,993 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:09:18" (1/1) ... [2025-04-14 00:09:18,993 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:09:18" (1/1) ... [2025-04-14 00:09:19,012 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:09:18" (1/1) ... [2025-04-14 00:09:19,014 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:09:18" (1/1) ... [2025-04-14 00:09:19,018 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:09:18" (1/1) ... [2025-04-14 00:09:19,019 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:09:18" (1/1) ... [2025-04-14 00:09:19,032 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-04-14 00:09:19,033 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-04-14 00:09:19,033 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-04-14 00:09:19,033 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-04-14 00:09:19,039 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:09:18" (1/1) ... [2025-04-14 00:09:19,056 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-14 00:09:19,081 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-14 00:09:19,113 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 00:09:19,124 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 00:09:19,150 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-04-14 00:09:19,150 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-04-14 00:09:19,150 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2025-04-14 00:09:19,150 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2025-04-14 00:09:19,151 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2025-04-14 00:09:19,151 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2025-04-14 00:09:19,151 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2025-04-14 00:09:19,151 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2025-04-14 00:09:19,151 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2025-04-14 00:09:19,151 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2025-04-14 00:09:19,151 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-04-14 00:09:19,151 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-04-14 00:09:19,151 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-04-14 00:09:19,151 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-04-14 00:09:19,153 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 00:09:19,267 INFO L256 CfgBuilder]: Building ICFG [2025-04-14 00:09:19,273 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-04-14 00:09:19,608 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-04-14 00:09:19,609 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-04-14 00:09:19,609 INFO L318 CfgBuilder]: Performing block encoding [2025-04-14 00:09:19,848 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-04-14 00:09:19,849 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 14.04 12:09:19 BoogieIcfgContainer [2025-04-14 00:09:19,849 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-04-14 00:09:19,851 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-04-14 00:09:19,851 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-04-14 00:09:19,860 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-04-14 00:09:19,860 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.04 12:09:17" (1/3) ... [2025-04-14 00:09:19,861 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@435e1ea9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.04 12:09:19, skipping insertion in model container [2025-04-14 00:09:19,861 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:09:18" (2/3) ... [2025-04-14 00:09:19,861 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@435e1ea9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.04 12:09:19, skipping insertion in model container [2025-04-14 00:09:19,861 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 14.04 12:09:19" (3/3) ... [2025-04-14 00:09:19,862 INFO L128 eAbstractionObserver]: Analyzing ICFG safe016_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2025-04-14 00:09:19,881 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-04-14 00:09:19,884 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG safe016_pso.oepc_pso.opt_tso.oepc_tso.opt.i that has 5 procedures, 42 locations, 37 edges, 1 initial locations, 0 loop locations, and 1 error locations. [2025-04-14 00:09:19,885 INFO L490 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-04-14 00:09:19,988 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-04-14 00:09:20,029 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 54 places, 41 transitions, 98 flow [2025-04-14 00:09:20,072 INFO L116 PetriNetUnfolderBase]: 0/37 cut-off events. [2025-04-14 00:09:20,074 INFO L117 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-04-14 00:09:20,075 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50 conditions, 37 events. 0/37 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 68 event pairs, 0 based on Foata normal form. 0/36 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2025-04-14 00:09:20,075 INFO L82 GeneralOperation]: Start removeDead. Operand has 54 places, 41 transitions, 98 flow [2025-04-14 00:09:20,080 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 49 places, 36 transitions, 84 flow [2025-04-14 00:09:20,092 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-04-14 00:09:20,110 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;@55a9fd5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-14 00:09:20,113 INFO L341 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2025-04-14 00:09:20,132 INFO L177 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-04-14 00:09:20,132 INFO L116 PetriNetUnfolderBase]: 0/35 cut-off events. [2025-04-14 00:09:20,132 INFO L117 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-04-14 00:09:20,133 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 00:09:20,133 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-14 00:09:20,134 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-04-14 00:09:20,140 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 00:09:20,141 INFO L85 PathProgramCache]: Analyzing trace with hash 1819042727, now seen corresponding path program 1 times [2025-04-14 00:09:20,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 00:09:20,156 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959541314] [2025-04-14 00:09:20,156 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-14 00:09:20,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 00:09:20,314 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-04-14 00:09:20,358 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-04-14 00:09:20,358 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-14 00:09:20,360 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 00:09:21,011 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 00:09:21,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 00:09:21,012 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959541314] [2025-04-14 00:09:21,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1959541314] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-14 00:09:21,012 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-14 00:09:21,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-04-14 00:09:21,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105476036] [2025-04-14 00:09:21,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-14 00:09:21,020 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-04-14 00:09:21,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 00:09:21,046 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-04-14 00:09:21,046 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-04-14 00:09:21,049 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 41 [2025-04-14 00:09:21,051 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 36 transitions, 84 flow. Second operand has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 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 00:09:21,051 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 00:09:21,051 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 41 [2025-04-14 00:09:21,051 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 00:09:23,610 INFO L116 PetriNetUnfolderBase]: 21837/29182 cut-off events. [2025-04-14 00:09:23,610 INFO L117 PetriNetUnfolderBase]: For 207/207 co-relation queries the response was YES. [2025-04-14 00:09:23,715 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58792 conditions, 29182 events. 21837/29182 cut-off events. For 207/207 co-relation queries the response was YES. Maximal size of possible extension queue 1005. Compared 166289 event pairs, 2982 based on Foata normal form. 900/30075 useless extension candidates. Maximal degree in co-relation 58780. Up to 23476 conditions per place. [2025-04-14 00:09:23,904 INFO L140 encePairwiseOnDemand]: 37/41 looper letters, 53 selfloop transitions, 2 changer transitions 32/91 dead transitions. [2025-04-14 00:09:23,904 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 91 transitions, 377 flow [2025-04-14 00:09:23,905 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-04-14 00:09:23,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-04-14 00:09:23,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 129 transitions. [2025-04-14 00:09:23,914 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.6292682926829268 [2025-04-14 00:09:23,915 INFO L175 Difference]: Start difference. First operand has 49 places, 36 transitions, 84 flow. Second operand 5 states and 129 transitions. [2025-04-14 00:09:23,915 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 91 transitions, 377 flow [2025-04-14 00:09:23,922 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 91 transitions, 370 flow, removed 0 selfloop flow, removed 4 redundant places. [2025-04-14 00:09:23,926 INFO L231 Difference]: Finished difference. Result has 52 places, 36 transitions, 92 flow [2025-04-14 00:09:23,928 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=92, PETRI_PLACES=52, PETRI_TRANSITIONS=36} [2025-04-14 00:09:23,933 INFO L279 CegarLoopForPetriNet]: 49 programPoint places, 3 predicate places. [2025-04-14 00:09:23,933 INFO L485 AbstractCegarLoop]: Abstraction has has 52 places, 36 transitions, 92 flow [2025-04-14 00:09:23,934 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 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 00:09:23,934 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 00:09:23,934 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-14 00:09:23,934 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-04-14 00:09:23,934 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 2 more)] === [2025-04-14 00:09:23,936 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 00:09:23,936 INFO L85 PathProgramCache]: Analyzing trace with hash 49162664, now seen corresponding path program 1 times [2025-04-14 00:09:23,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 00:09:23,936 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313116924] [2025-04-14 00:09:23,936 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-14 00:09:23,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 00:09:23,952 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-04-14 00:09:23,962 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-04-14 00:09:23,962 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-14 00:09:23,963 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 00:09:24,142 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 00:09:24,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 00:09:24,142 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313116924] [2025-04-14 00:09:24,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1313116924] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-14 00:09:24,142 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-14 00:09:24,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-04-14 00:09:24,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790502658] [2025-04-14 00:09:24,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-14 00:09:24,143 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-04-14 00:09:24,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 00:09:24,144 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-04-14 00:09:24,144 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-04-14 00:09:24,144 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 41 [2025-04-14 00:09:24,144 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 36 transitions, 92 flow. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 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 00:09:24,144 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 00:09:24,144 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 41 [2025-04-14 00:09:24,144 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 00:09:26,483 INFO L116 PetriNetUnfolderBase]: 37941/50871 cut-off events. [2025-04-14 00:09:26,483 INFO L117 PetriNetUnfolderBase]: For 8028/8028 co-relation queries the response was YES. [2025-04-14 00:09:26,685 INFO L83 FinitePrefix]: Finished finitePrefix Result has 109034 conditions, 50871 events. 37941/50871 cut-off events. For 8028/8028 co-relation queries the response was YES. Maximal size of possible extension queue 1513. Compared 292774 event pairs, 2157 based on Foata normal form. 1390/52242 useless extension candidates. Maximal degree in co-relation 109021. Up to 24356 conditions per place. [2025-04-14 00:09:26,842 INFO L140 encePairwiseOnDemand]: 32/41 looper letters, 66 selfloop transitions, 9 changer transitions 47/126 dead transitions. [2025-04-14 00:09:26,842 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 126 transitions, 534 flow [2025-04-14 00:09:26,843 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-04-14 00:09:26,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-04-14 00:09:26,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 181 transitions. [2025-04-14 00:09:26,846 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.6306620209059234 [2025-04-14 00:09:26,846 INFO L175 Difference]: Start difference. First operand has 52 places, 36 transitions, 92 flow. Second operand 7 states and 181 transitions. [2025-04-14 00:09:26,846 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 126 transitions, 534 flow [2025-04-14 00:09:27,497 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 126 transitions, 518 flow, removed 4 selfloop flow, removed 4 redundant places. [2025-04-14 00:09:27,498 INFO L231 Difference]: Finished difference. Result has 58 places, 44 transitions, 165 flow [2025-04-14 00:09:27,498 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=165, PETRI_PLACES=58, PETRI_TRANSITIONS=44} [2025-04-14 00:09:27,499 INFO L279 CegarLoopForPetriNet]: 49 programPoint places, 9 predicate places. [2025-04-14 00:09:27,499 INFO L485 AbstractCegarLoop]: Abstraction has has 58 places, 44 transitions, 165 flow [2025-04-14 00:09:27,499 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 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 00:09:27,499 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 00:09:27,499 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-14 00:09:27,499 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-04-14 00:09:27,499 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 2 more)] === [2025-04-14 00:09:27,500 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 00:09:27,500 INFO L85 PathProgramCache]: Analyzing trace with hash -1176498679, now seen corresponding path program 1 times [2025-04-14 00:09:27,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 00:09:27,500 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [415164325] [2025-04-14 00:09:27,500 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-14 00:09:27,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 00:09:27,505 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-04-14 00:09:27,509 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-04-14 00:09:27,509 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-14 00:09:27,510 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 00:09:27,781 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 00:09:27,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 00:09:27,781 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [415164325] [2025-04-14 00:09:27,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [415164325] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-14 00:09:27,781 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-14 00:09:27,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-04-14 00:09:27,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123192038] [2025-04-14 00:09:27,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-14 00:09:27,782 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-04-14 00:09:27,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 00:09:27,782 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-04-14 00:09:27,782 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-04-14 00:09:27,782 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 41 [2025-04-14 00:09:27,783 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 44 transitions, 165 flow. Second operand has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 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 00:09:27,783 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 00:09:27,783 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 41 [2025-04-14 00:09:27,783 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 00:09:31,579 INFO L116 PetriNetUnfolderBase]: 57760/77412 cut-off events. [2025-04-14 00:09:31,579 INFO L117 PetriNetUnfolderBase]: For 49655/49709 co-relation queries the response was YES. [2025-04-14 00:09:31,853 INFO L83 FinitePrefix]: Finished finitePrefix Result has 193794 conditions, 77412 events. 57760/77412 cut-off events. For 49655/49709 co-relation queries the response was YES. Maximal size of possible extension queue 2397. Compared 467536 event pairs, 6865 based on Foata normal form. 1352/78745 useless extension candidates. Maximal degree in co-relation 193777. Up to 32384 conditions per place. [2025-04-14 00:09:32,082 INFO L140 encePairwiseOnDemand]: 32/41 looper letters, 81 selfloop transitions, 10 changer transitions 35/130 dead transitions. [2025-04-14 00:09:32,082 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 130 transitions, 694 flow [2025-04-14 00:09:32,090 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-04-14 00:09:32,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-04-14 00:09:32,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 164 transitions. [2025-04-14 00:09:32,091 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2025-04-14 00:09:32,091 INFO L175 Difference]: Start difference. First operand has 58 places, 44 transitions, 165 flow. Second operand 6 states and 164 transitions. [2025-04-14 00:09:32,092 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 130 transitions, 694 flow [2025-04-14 00:09:32,429 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 130 transitions, 690 flow, removed 2 selfloop flow, removed 1 redundant places. [2025-04-14 00:09:32,435 INFO L231 Difference]: Finished difference. Result has 63 places, 47 transitions, 228 flow [2025-04-14 00:09:32,435 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=163, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=228, PETRI_PLACES=63, PETRI_TRANSITIONS=47} [2025-04-14 00:09:32,440 INFO L279 CegarLoopForPetriNet]: 49 programPoint places, 14 predicate places. [2025-04-14 00:09:32,440 INFO L485 AbstractCegarLoop]: Abstraction has has 63 places, 47 transitions, 228 flow [2025-04-14 00:09:32,440 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 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 00:09:32,440 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 00:09:32,440 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-14 00:09:32,440 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-04-14 00:09:32,441 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 2 more)] === [2025-04-14 00:09:32,441 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 00:09:32,441 INFO L85 PathProgramCache]: Analyzing trace with hash 503866761, now seen corresponding path program 2 times [2025-04-14 00:09:32,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 00:09:32,441 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860973086] [2025-04-14 00:09:32,442 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-14 00:09:32,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 00:09:32,463 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 18 statements into 1 equivalence classes. [2025-04-14 00:09:32,482 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-04-14 00:09:32,483 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-04-14 00:09:32,483 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 00:09:32,742 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 00:09:32,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 00:09:32,743 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1860973086] [2025-04-14 00:09:32,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1860973086] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-14 00:09:32,743 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-14 00:09:32,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-04-14 00:09:32,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400838580] [2025-04-14 00:09:32,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-14 00:09:32,743 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-04-14 00:09:32,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 00:09:32,744 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-04-14 00:09:32,744 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-04-14 00:09:32,744 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 41 [2025-04-14 00:09:32,744 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 47 transitions, 228 flow. Second operand has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-14 00:09:32,745 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 00:09:32,745 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 41 [2025-04-14 00:09:32,745 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 00:09:36,219 INFO L116 PetriNetUnfolderBase]: 33443/45006 cut-off events. [2025-04-14 00:09:36,219 INFO L117 PetriNetUnfolderBase]: For 63991/63991 co-relation queries the response was YES. [2025-04-14 00:09:36,459 INFO L83 FinitePrefix]: Finished finitePrefix Result has 124711 conditions, 45006 events. 33443/45006 cut-off events. For 63991/63991 co-relation queries the response was YES. Maximal size of possible extension queue 1355. Compared 253735 event pairs, 13366 based on Foata normal form. 1064/46068 useless extension candidates. Maximal degree in co-relation 124689. Up to 38566 conditions per place. [2025-04-14 00:09:36,897 INFO L140 encePairwiseOnDemand]: 37/41 looper letters, 60 selfloop transitions, 3 changer transitions 33/100 dead transitions. [2025-04-14 00:09:36,897 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 100 transitions, 636 flow [2025-04-14 00:09:36,898 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-04-14 00:09:36,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-04-14 00:09:36,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 121 transitions. [2025-04-14 00:09:36,900 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.5902439024390244 [2025-04-14 00:09:36,900 INFO L175 Difference]: Start difference. First operand has 63 places, 47 transitions, 228 flow. Second operand 5 states and 121 transitions. [2025-04-14 00:09:36,900 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 100 transitions, 636 flow [2025-04-14 00:09:37,268 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 100 transitions, 612 flow, removed 5 selfloop flow, removed 4 redundant places. [2025-04-14 00:09:37,271 INFO L231 Difference]: Finished difference. Result has 65 places, 47 transitions, 227 flow [2025-04-14 00:09:37,271 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=212, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=227, PETRI_PLACES=65, PETRI_TRANSITIONS=47} [2025-04-14 00:09:37,272 INFO L279 CegarLoopForPetriNet]: 49 programPoint places, 16 predicate places. [2025-04-14 00:09:37,272 INFO L485 AbstractCegarLoop]: Abstraction has has 65 places, 47 transitions, 227 flow [2025-04-14 00:09:37,272 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-14 00:09:37,272 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 00:09:37,272 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-14 00:09:37,273 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-04-14 00:09:37,273 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-04-14 00:09:37,274 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 00:09:37,274 INFO L85 PathProgramCache]: Analyzing trace with hash 398148222, now seen corresponding path program 1 times [2025-04-14 00:09:37,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 00:09:37,274 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130779969] [2025-04-14 00:09:37,274 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-14 00:09:37,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 00:09:37,283 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-04-14 00:09:37,294 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-04-14 00:09:37,294 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-14 00:09:37,294 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 00:09:37,408 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 00:09:37,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 00:09:37,409 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2130779969] [2025-04-14 00:09:37,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2130779969] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-14 00:09:37,409 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-14 00:09:37,409 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-04-14 00:09:37,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935419392] [2025-04-14 00:09:37,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-14 00:09:37,409 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-04-14 00:09:37,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 00:09:37,410 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-04-14 00:09:37,410 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-04-14 00:09:37,410 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 41 [2025-04-14 00:09:37,410 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 47 transitions, 227 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) [2025-04-14 00:09:37,410 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 00:09:37,410 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 41 [2025-04-14 00:09:37,410 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 00:09:42,844 INFO L116 PetriNetUnfolderBase]: 47330/63925 cut-off events. [2025-04-14 00:09:42,844 INFO L117 PetriNetUnfolderBase]: For 92104/92113 co-relation queries the response was YES. [2025-04-14 00:09:43,537 INFO L83 FinitePrefix]: Finished finitePrefix Result has 170027 conditions, 63925 events. 47330/63925 cut-off events. For 92104/92113 co-relation queries the response was YES. Maximal size of possible extension queue 1881. Compared 382543 event pairs, 21611 based on Foata normal form. 1548/65470 useless extension candidates. Maximal degree in co-relation 170004. Up to 30450 conditions per place. [2025-04-14 00:09:43,891 INFO L140 encePairwiseOnDemand]: 37/41 looper letters, 59 selfloop transitions, 6 changer transitions 34/103 dead transitions. [2025-04-14 00:09:43,892 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 103 transitions, 629 flow [2025-04-14 00:09:43,904 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-04-14 00:09:43,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-04-14 00:09:43,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 127 transitions. [2025-04-14 00:09:43,909 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.6195121951219512 [2025-04-14 00:09:43,909 INFO L175 Difference]: Start difference. First operand has 65 places, 47 transitions, 227 flow. Second operand 5 states and 127 transitions. [2025-04-14 00:09:43,909 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 103 transitions, 629 flow [2025-04-14 00:09:44,878 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 103 transitions, 615 flow, removed 4 selfloop flow, removed 4 redundant places. [2025-04-14 00:09:44,883 INFO L231 Difference]: Finished difference. Result has 66 places, 46 transitions, 233 flow [2025-04-14 00:09:44,883 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=217, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=233, PETRI_PLACES=66, PETRI_TRANSITIONS=46} [2025-04-14 00:09:44,887 INFO L279 CegarLoopForPetriNet]: 49 programPoint places, 17 predicate places. [2025-04-14 00:09:44,887 INFO L485 AbstractCegarLoop]: Abstraction has has 66 places, 46 transitions, 233 flow [2025-04-14 00:09:44,887 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) [2025-04-14 00:09:44,887 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 00:09:44,888 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-14 00:09:44,888 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-04-14 00:09:44,888 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 2 more)] === [2025-04-14 00:09:44,889 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 00:09:44,889 INFO L85 PathProgramCache]: Analyzing trace with hash 1752371798, now seen corresponding path program 1 times [2025-04-14 00:09:44,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 00:09:44,889 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801658923] [2025-04-14 00:09:44,889 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-14 00:09:44,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 00:09:44,910 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-04-14 00:09:44,922 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-04-14 00:09:44,926 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-14 00:09:44,927 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 00:09:45,229 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 00:09:45,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 00:09:45,230 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801658923] [2025-04-14 00:09:45,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [801658923] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-14 00:09:45,231 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-14 00:09:45,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-04-14 00:09:45,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174627314] [2025-04-14 00:09:45,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-14 00:09:45,236 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-04-14 00:09:45,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 00:09:45,236 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-04-14 00:09:45,236 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-04-14 00:09:45,237 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 41 [2025-04-14 00:09:45,237 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 46 transitions, 233 flow. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 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 00:09:45,237 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 00:09:45,237 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 41 [2025-04-14 00:09:45,237 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 00:09:52,321 INFO L116 PetriNetUnfolderBase]: 66161/89425 cut-off events. [2025-04-14 00:09:52,321 INFO L117 PetriNetUnfolderBase]: For 108631/108633 co-relation queries the response was YES. [2025-04-14 00:09:52,849 INFO L83 FinitePrefix]: Finished finitePrefix Result has 229158 conditions, 89425 events. 66161/89425 cut-off events. For 108631/108633 co-relation queries the response was YES. Maximal size of possible extension queue 2820. Compared 560087 event pairs, 19481 based on Foata normal form. 1604/91029 useless extension candidates. Maximal degree in co-relation 229135. Up to 42050 conditions per place. [2025-04-14 00:09:53,002 INFO L140 encePairwiseOnDemand]: 35/41 looper letters, 70 selfloop transitions, 5 changer transitions 55/134 dead transitions. [2025-04-14 00:09:53,002 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 134 transitions, 935 flow [2025-04-14 00:09:53,003 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-04-14 00:09:53,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-04-14 00:09:53,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 151 transitions. [2025-04-14 00:09:53,012 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.6138211382113821 [2025-04-14 00:09:53,013 INFO L175 Difference]: Start difference. First operand has 66 places, 46 transitions, 233 flow. Second operand 6 states and 151 transitions. [2025-04-14 00:09:53,013 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 134 transitions, 935 flow [2025-04-14 00:09:53,905 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 134 transitions, 887 flow, removed 2 selfloop flow, removed 4 redundant places. [2025-04-14 00:09:53,906 INFO L231 Difference]: Finished difference. Result has 69 places, 47 transitions, 263 flow [2025-04-14 00:09:53,907 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=215, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=263, PETRI_PLACES=69, PETRI_TRANSITIONS=47} [2025-04-14 00:09:53,907 INFO L279 CegarLoopForPetriNet]: 49 programPoint places, 20 predicate places. [2025-04-14 00:09:53,907 INFO L485 AbstractCegarLoop]: Abstraction has has 69 places, 47 transitions, 263 flow [2025-04-14 00:09:53,912 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 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 00:09:53,912 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 00:09:53,913 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-14 00:09:53,913 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-04-14 00:09:53,913 INFO L403 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-04-14 00:09:53,913 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 00:09:53,913 INFO L85 PathProgramCache]: Analyzing trace with hash 2008379322, now seen corresponding path program 1 times [2025-04-14 00:09:53,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 00:09:53,913 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395451487] [2025-04-14 00:09:53,914 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-14 00:09:53,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 00:09:53,935 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-04-14 00:09:53,948 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-04-14 00:09:53,954 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-14 00:09:53,954 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 00:09:54,240 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 00:09:54,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 00:09:54,241 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1395451487] [2025-04-14 00:09:54,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1395451487] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-14 00:09:54,241 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-14 00:09:54,241 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-04-14 00:09:54,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111332096] [2025-04-14 00:09:54,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-14 00:09:54,241 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-04-14 00:09:54,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 00:09:54,242 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-04-14 00:09:54,242 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-04-14 00:09:54,242 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 41 [2025-04-14 00:09:54,242 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 47 transitions, 263 flow. Second operand has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 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 00:09:54,242 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 00:09:54,242 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 41 [2025-04-14 00:09:54,242 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 00:09:58,645 INFO L116 PetriNetUnfolderBase]: 38756/52624 cut-off events. [2025-04-14 00:09:58,646 INFO L117 PetriNetUnfolderBase]: For 74513/74513 co-relation queries the response was YES. [2025-04-14 00:09:59,015 INFO L83 FinitePrefix]: Finished finitePrefix Result has 136393 conditions, 52624 events. 38756/52624 cut-off events. For 74513/74513 co-relation queries the response was YES. Maximal size of possible extension queue 1644. Compared 314241 event pairs, 7404 based on Foata normal form. 1232/53856 useless extension candidates. Maximal degree in co-relation 136368. Up to 26980 conditions per place. [2025-04-14 00:09:59,117 INFO L140 encePairwiseOnDemand]: 33/41 looper letters, 70 selfloop transitions, 12 changer transitions 45/131 dead transitions. [2025-04-14 00:09:59,118 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 131 transitions, 777 flow [2025-04-14 00:09:59,118 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-04-14 00:09:59,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-04-14 00:09:59,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 179 transitions. [2025-04-14 00:09:59,123 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.6236933797909407 [2025-04-14 00:09:59,123 INFO L175 Difference]: Start difference. First operand has 69 places, 47 transitions, 263 flow. Second operand 7 states and 179 transitions. [2025-04-14 00:09:59,123 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 131 transitions, 777 flow [2025-04-14 00:09:59,516 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 131 transitions, 733 flow, removed 18 selfloop flow, removed 4 redundant places. [2025-04-14 00:09:59,518 INFO L231 Difference]: Finished difference. Result has 74 places, 48 transitions, 289 flow [2025-04-14 00:09:59,519 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=238, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=289, PETRI_PLACES=74, PETRI_TRANSITIONS=48} [2025-04-14 00:09:59,527 INFO L279 CegarLoopForPetriNet]: 49 programPoint places, 25 predicate places. [2025-04-14 00:09:59,527 INFO L485 AbstractCegarLoop]: Abstraction has has 74 places, 48 transitions, 289 flow [2025-04-14 00:09:59,528 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 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 00:09:59,528 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 00:09:59,528 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-14 00:09:59,529 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-04-14 00:09:59,529 INFO L403 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-04-14 00:09:59,530 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 00:09:59,530 INFO L85 PathProgramCache]: Analyzing trace with hash -1830186345, now seen corresponding path program 1 times [2025-04-14 00:09:59,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 00:09:59,531 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153032677] [2025-04-14 00:09:59,531 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-14 00:09:59,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 00:09:59,554 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-04-14 00:09:59,571 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-04-14 00:09:59,572 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-14 00:09:59,572 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 00:09:59,981 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 00:09:59,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 00:09:59,982 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153032677] [2025-04-14 00:09:59,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [153032677] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-14 00:09:59,982 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-14 00:09:59,982 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-04-14 00:09:59,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288205735] [2025-04-14 00:09:59,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-14 00:09:59,982 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-04-14 00:09:59,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 00:09:59,983 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-04-14 00:09:59,983 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-04-14 00:09:59,983 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 41 [2025-04-14 00:09:59,983 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 48 transitions, 289 flow. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 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 00:09:59,983 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 00:09:59,983 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 41 [2025-04-14 00:09:59,983 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 00:10:02,699 INFO L116 PetriNetUnfolderBase]: 27220/37623 cut-off events. [2025-04-14 00:10:02,700 INFO L117 PetriNetUnfolderBase]: For 74909/74909 co-relation queries the response was YES. [2025-04-14 00:10:02,998 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99068 conditions, 37623 events. 27220/37623 cut-off events. For 74909/74909 co-relation queries the response was YES. Maximal size of possible extension queue 1197. Compared 225269 event pairs, 4396 based on Foata normal form. 1489/39111 useless extension candidates. Maximal degree in co-relation 99040. Up to 21725 conditions per place. [2025-04-14 00:10:03,078 INFO L140 encePairwiseOnDemand]: 34/41 looper letters, 87 selfloop transitions, 6 changer transitions 9/106 dead transitions. [2025-04-14 00:10:03,078 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 106 transitions, 887 flow [2025-04-14 00:10:03,079 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-04-14 00:10:03,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-04-14 00:10:03,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 104 transitions. [2025-04-14 00:10:03,080 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.6341463414634146 [2025-04-14 00:10:03,080 INFO L175 Difference]: Start difference. First operand has 74 places, 48 transitions, 289 flow. Second operand 4 states and 104 transitions. [2025-04-14 00:10:03,081 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 106 transitions, 887 flow [2025-04-14 00:10:03,196 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 106 transitions, 861 flow, removed 13 selfloop flow, removed 4 redundant places. [2025-04-14 00:10:03,199 INFO L231 Difference]: Finished difference. Result has 72 places, 52 transitions, 317 flow [2025-04-14 00:10:03,199 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=275, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=317, PETRI_PLACES=72, PETRI_TRANSITIONS=52} [2025-04-14 00:10:03,200 INFO L279 CegarLoopForPetriNet]: 49 programPoint places, 23 predicate places. [2025-04-14 00:10:03,200 INFO L485 AbstractCegarLoop]: Abstraction has has 72 places, 52 transitions, 317 flow [2025-04-14 00:10:03,200 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 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 00:10:03,200 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 00:10:03,200 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-14 00:10:03,200 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-04-14 00:10:03,200 INFO L403 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-04-14 00:10:03,201 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 00:10:03,201 INFO L85 PathProgramCache]: Analyzing trace with hash -1355978018, now seen corresponding path program 1 times [2025-04-14 00:10:03,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 00:10:03,201 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723048126] [2025-04-14 00:10:03,201 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-14 00:10:03,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 00:10:03,223 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-04-14 00:10:03,238 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-04-14 00:10:03,238 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-14 00:10:03,238 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 00:10:03,781 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 00:10:03,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 00:10:03,782 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723048126] [2025-04-14 00:10:03,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [723048126] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-14 00:10:03,782 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-14 00:10:03,782 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-04-14 00:10:03,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679246005] [2025-04-14 00:10:03,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-14 00:10:03,782 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-04-14 00:10:03,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 00:10:03,783 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-04-14 00:10:03,783 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-04-14 00:10:03,783 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 41 [2025-04-14 00:10:03,783 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 52 transitions, 317 flow. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-14 00:10:03,783 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 00:10:03,783 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 41 [2025-04-14 00:10:03,783 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 00:10:06,180 INFO L116 PetriNetUnfolderBase]: 19826/27748 cut-off events. [2025-04-14 00:10:06,180 INFO L117 PetriNetUnfolderBase]: For 50634/50634 co-relation queries the response was YES. [2025-04-14 00:10:06,349 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79781 conditions, 27748 events. 19826/27748 cut-off events. For 50634/50634 co-relation queries the response was YES. Maximal size of possible extension queue 903. Compared 161117 event pairs, 1922 based on Foata normal form. 1328/29075 useless extension candidates. Maximal degree in co-relation 79753. Up to 12141 conditions per place. [2025-04-14 00:10:06,393 INFO L140 encePairwiseOnDemand]: 34/41 looper letters, 102 selfloop transitions, 10 changer transitions 13/129 dead transitions. [2025-04-14 00:10:06,393 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 129 transitions, 1069 flow [2025-04-14 00:10:06,393 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-04-14 00:10:06,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-04-14 00:10:06,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 133 transitions. [2025-04-14 00:10:06,394 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.6487804878048781 [2025-04-14 00:10:06,394 INFO L175 Difference]: Start difference. First operand has 72 places, 52 transitions, 317 flow. Second operand 5 states and 133 transitions. [2025-04-14 00:10:06,394 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 129 transitions, 1069 flow [2025-04-14 00:10:06,425 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 129 transitions, 1028 flow, removed 1 selfloop flow, removed 3 redundant places. [2025-04-14 00:10:06,429 INFO L231 Difference]: Finished difference. Result has 75 places, 56 transitions, 359 flow [2025-04-14 00:10:06,429 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=298, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=359, PETRI_PLACES=75, PETRI_TRANSITIONS=56} [2025-04-14 00:10:06,430 INFO L279 CegarLoopForPetriNet]: 49 programPoint places, 26 predicate places. [2025-04-14 00:10:06,430 INFO L485 AbstractCegarLoop]: Abstraction has has 75 places, 56 transitions, 359 flow [2025-04-14 00:10:06,430 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-14 00:10:06,430 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 00:10:06,430 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-14 00:10:06,430 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-04-14 00:10:06,431 INFO L403 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-04-14 00:10:06,431 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 00:10:06,431 INFO L85 PathProgramCache]: Analyzing trace with hash 1614906761, now seen corresponding path program 1 times [2025-04-14 00:10:06,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 00:10:06,431 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373482805] [2025-04-14 00:10:06,431 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-14 00:10:06,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 00:10:06,445 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 26 statements into 1 equivalence classes. [2025-04-14 00:10:06,460 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 26 of 26 statements. [2025-04-14 00:10:06,460 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-14 00:10:06,460 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 00:10:06,543 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 00:10:06,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 00:10:06,544 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373482805] [2025-04-14 00:10:06,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1373482805] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-14 00:10:06,544 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-14 00:10:06,544 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-04-14 00:10:06,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115390862] [2025-04-14 00:10:06,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-14 00:10:06,544 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-04-14 00:10:06,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 00:10:06,545 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-04-14 00:10:06,545 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2025-04-14 00:10:06,545 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 41 [2025-04-14 00:10:06,545 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 56 transitions, 359 flow. Second operand has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-14 00:10:06,545 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 00:10:06,545 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 41 [2025-04-14 00:10:06,545 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 00:10:07,850 INFO L116 PetriNetUnfolderBase]: 12522/17676 cut-off events. [2025-04-14 00:10:07,850 INFO L117 PetriNetUnfolderBase]: For 38938/38938 co-relation queries the response was YES. [2025-04-14 00:10:07,975 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54482 conditions, 17676 events. 12522/17676 cut-off events. For 38938/38938 co-relation queries the response was YES. Maximal size of possible extension queue 530. Compared 97073 event pairs, 1018 based on Foata normal form. 848/18523 useless extension candidates. Maximal degree in co-relation 54453. Up to 5844 conditions per place. [2025-04-14 00:10:08,003 INFO L140 encePairwiseOnDemand]: 34/41 looper letters, 89 selfloop transitions, 14 changer transitions 39/146 dead transitions. [2025-04-14 00:10:08,003 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 146 transitions, 1186 flow [2025-04-14 00:10:08,003 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-04-14 00:10:08,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-04-14 00:10:08,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 158 transitions. [2025-04-14 00:10:08,004 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.6422764227642277 [2025-04-14 00:10:08,004 INFO L175 Difference]: Start difference. First operand has 75 places, 56 transitions, 359 flow. Second operand 6 states and 158 transitions. [2025-04-14 00:10:08,004 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 146 transitions, 1186 flow [2025-04-14 00:10:08,154 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 146 transitions, 1156 flow, removed 5 selfloop flow, removed 4 redundant places. [2025-04-14 00:10:08,156 INFO L231 Difference]: Finished difference. Result has 78 places, 54 transitions, 361 flow [2025-04-14 00:10:08,157 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=332, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=361, PETRI_PLACES=78, PETRI_TRANSITIONS=54} [2025-04-14 00:10:08,158 INFO L279 CegarLoopForPetriNet]: 49 programPoint places, 29 predicate places. [2025-04-14 00:10:08,158 INFO L485 AbstractCegarLoop]: Abstraction has has 78 places, 54 transitions, 361 flow [2025-04-14 00:10:08,158 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-14 00:10:08,158 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 00:10:08,158 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-14 00:10:08,159 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-04-14 00:10:08,159 INFO L403 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-04-14 00:10:08,159 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 00:10:08,159 INFO L85 PathProgramCache]: Analyzing trace with hash -2026418727, now seen corresponding path program 1 times [2025-04-14 00:10:08,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 00:10:08,161 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156416444] [2025-04-14 00:10:08,162 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-14 00:10:08,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 00:10:08,168 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 29 statements into 1 equivalence classes. [2025-04-14 00:10:08,172 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 29 of 29 statements. [2025-04-14 00:10:08,172 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-14 00:10:08,172 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 00:10:08,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 00:10:08,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 00:10:08,257 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156416444] [2025-04-14 00:10:08,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1156416444] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-14 00:10:08,257 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-14 00:10:08,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-04-14 00:10:08,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585700375] [2025-04-14 00:10:08,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-14 00:10:08,257 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-04-14 00:10:08,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 00:10:08,258 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-04-14 00:10:08,258 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2025-04-14 00:10:08,258 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 41 [2025-04-14 00:10:08,259 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 54 transitions, 361 flow. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-14 00:10:08,259 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 00:10:08,259 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 41 [2025-04-14 00:10:08,259 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 00:10:08,835 INFO L116 PetriNetUnfolderBase]: 5614/7968 cut-off events. [2025-04-14 00:10:08,835 INFO L117 PetriNetUnfolderBase]: For 22151/22151 co-relation queries the response was YES. [2025-04-14 00:10:08,858 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25775 conditions, 7968 events. 5614/7968 cut-off events. For 22151/22151 co-relation queries the response was YES. Maximal size of possible extension queue 261. Compared 39077 event pairs, 474 based on Foata normal form. 200/8167 useless extension candidates. Maximal degree in co-relation 25745. Up to 2624 conditions per place. [2025-04-14 00:10:08,865 INFO L140 encePairwiseOnDemand]: 34/41 looper letters, 0 selfloop transitions, 0 changer transitions 119/119 dead transitions. [2025-04-14 00:10:08,865 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 119 transitions, 929 flow [2025-04-14 00:10:08,866 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-04-14 00:10:08,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-04-14 00:10:08,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 155 transitions. [2025-04-14 00:10:08,866 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.5400696864111498 [2025-04-14 00:10:08,866 INFO L175 Difference]: Start difference. First operand has 78 places, 54 transitions, 361 flow. Second operand 7 states and 155 transitions. [2025-04-14 00:10:08,866 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 119 transitions, 929 flow [2025-04-14 00:10:08,933 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 119 transitions, 820 flow, removed 13 selfloop flow, removed 11 redundant places. [2025-04-14 00:10:08,934 INFO L231 Difference]: Finished difference. Result has 71 places, 0 transitions, 0 flow [2025-04-14 00:10:08,934 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=277, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=71, PETRI_TRANSITIONS=0} [2025-04-14 00:10:08,935 INFO L279 CegarLoopForPetriNet]: 49 programPoint places, 22 predicate places. [2025-04-14 00:10:08,935 INFO L485 AbstractCegarLoop]: Abstraction has has 71 places, 0 transitions, 0 flow [2025-04-14 00:10:08,935 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-14 00:10:08,937 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 5 remaining) [2025-04-14 00:10:08,938 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 5 remaining) [2025-04-14 00:10:08,938 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 5 remaining) [2025-04-14 00:10:08,938 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 5 remaining) [2025-04-14 00:10:08,938 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 5 remaining) [2025-04-14 00:10:08,938 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-04-14 00:10:08,938 INFO L422 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-14 00:10:08,940 INFO L242 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2025-04-14 00:10:08,940 INFO L171 ceAbstractionStarter]: Computing trace abstraction results [2025-04-14 00:10:08,944 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.04 12:10:08 BasicIcfg [2025-04-14 00:10:08,944 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-04-14 00:10:08,945 INFO L158 Benchmark]: Toolchain (without parser) took 50943.69ms. Allocated memory was 125.8MB in the beginning and 7.7GB in the end (delta: 7.5GB). Free memory was 90.5MB in the beginning and 4.7GB in the end (delta: -4.6GB). Peak memory consumption was 3.1GB. Max. memory is 8.0GB. [2025-04-14 00:10:08,945 INFO L158 Benchmark]: CDTParser took 0.39ms. Allocated memory is still 167.8MB. Free memory is still 98.3MB. There was no memory consumed. Max. memory is 8.0GB. [2025-04-14 00:10:08,945 INFO L158 Benchmark]: CACSL2BoogieTranslator took 822.61ms. Allocated memory is still 125.8MB. Free memory was 90.5MB in the beginning and 66.3MB in the end (delta: 24.2MB). Peak memory consumption was 25.2MB. Max. memory is 8.0GB. [2025-04-14 00:10:08,945 INFO L158 Benchmark]: Boogie Procedure Inliner took 86.59ms. Allocated memory is still 125.8MB. Free memory was 66.3MB in the beginning and 64.1MB in the end (delta: 2.2MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2025-04-14 00:10:08,945 INFO L158 Benchmark]: Boogie Preprocessor took 107.77ms. Allocated memory is still 125.8MB. Free memory was 64.1MB in the beginning and 62.5MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 8.0GB. [2025-04-14 00:10:08,945 INFO L158 Benchmark]: IcfgBuilder took 815.70ms. Allocated memory is still 125.8MB. Free memory was 62.5MB in the beginning and 38.6MB in the end (delta: 24.0MB). Peak memory consumption was 25.2MB. Max. memory is 8.0GB. [2025-04-14 00:10:08,946 INFO L158 Benchmark]: TraceAbstraction took 49093.19ms. Allocated memory was 125.8MB in the beginning and 7.7GB in the end (delta: 7.5GB). Free memory was 38.2MB in the beginning and 4.7GB in the end (delta: -4.7GB). Peak memory consumption was 3.0GB. Max. memory is 8.0GB. [2025-04-14 00:10:08,946 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.39ms. Allocated memory is still 167.8MB. Free memory is still 98.3MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 822.61ms. Allocated memory is still 125.8MB. Free memory was 90.5MB in the beginning and 66.3MB in the end (delta: 24.2MB). Peak memory consumption was 25.2MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 86.59ms. Allocated memory is still 125.8MB. Free memory was 66.3MB in the beginning and 64.1MB in the end (delta: 2.2MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * Boogie Preprocessor took 107.77ms. Allocated memory is still 125.8MB. Free memory was 64.1MB in the beginning and 62.5MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 8.0GB. * IcfgBuilder took 815.70ms. Allocated memory is still 125.8MB. Free memory was 62.5MB in the beginning and 38.6MB in the end (delta: 24.0MB). Peak memory consumption was 25.2MB. Max. memory is 8.0GB. * TraceAbstraction took 49093.19ms. Allocated memory was 125.8MB in the beginning and 7.7GB in the end (delta: 7.5GB). Free memory was 38.2MB in the beginning and 4.7GB in the end (delta: -4.7GB). Peak memory consumption was 3.0GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 18]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 9 procedures, 72 locations, 67 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: 48.9s, OverallIterations: 11, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 45.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 897 SdHoareTripleChecker+Valid, 2.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 897 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 1.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 35 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1587 IncrementalHoareTripleChecker+Invalid, 1622 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 35 mSolverCounterUnsat, 0 mSDtfsCounter, 1587 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 61 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=361occurred in iteration=10, InterpolantAutomatonStates: 63, 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, 0.2s SatisfiabilityAnalysisTime, 3.2s InterpolantComputationTime, 227 NumberOfCodeBlocks, 227 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 216 ConstructedInterpolants, 0 QuantifiedInterpolants, 651 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 11 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2025-04-14 00:10:08,960 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...