/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/rfi001_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.3.0-wip.dk.cfg-lbe-improvements-94356ea-m [2025-04-14 00:07:22,234 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-04-14 00:07:22,282 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 00:07:22,287 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-04-14 00:07:22,287 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-04-14 00:07:22,309 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-04-14 00:07:22,309 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-04-14 00:07:22,310 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-04-14 00:07:22,310 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-04-14 00:07:22,310 INFO L153 SettingsManager]: * Use memory slicer=true [2025-04-14 00:07:22,311 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-04-14 00:07:22,311 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-04-14 00:07:22,311 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-04-14 00:07:22,311 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-04-14 00:07:22,311 INFO L153 SettingsManager]: * Use SBE=true [2025-04-14 00:07:22,312 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-04-14 00:07:22,312 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-04-14 00:07:22,312 INFO L153 SettingsManager]: * sizeof long=4 [2025-04-14 00:07:22,312 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-04-14 00:07:22,312 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-04-14 00:07:22,312 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-04-14 00:07:22,312 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-04-14 00:07:22,312 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-04-14 00:07:22,312 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-04-14 00:07:22,312 INFO L153 SettingsManager]: * sizeof long double=12 [2025-04-14 00:07:22,312 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-04-14 00:07:22,312 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-04-14 00:07:22,312 INFO L153 SettingsManager]: * Use constant arrays=true [2025-04-14 00:07:22,312 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-04-14 00:07:22,313 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-14 00:07:22,313 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-14 00:07:22,313 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-14 00:07:22,313 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-14 00:07:22,313 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-04-14 00:07:22,313 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-14 00:07:22,313 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-14 00:07:22,313 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-14 00:07:22,313 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-14 00:07:22,313 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-04-14 00:07:22,313 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-04-14 00:07:22,313 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-04-14 00:07:22,313 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-04-14 00:07:22,313 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-04-14 00:07:22,313 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-04-14 00:07:22,313 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-04-14 00:07:22,314 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-04-14 00:07:22,314 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-04-14 00:07:22,314 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 00:07:22,542 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-04-14 00:07:22,550 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-04-14 00:07:22,552 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-04-14 00:07:22,553 INFO L270 PluginConnector]: Initializing CDTParser... [2025-04-14 00:07:22,553 INFO L274 PluginConnector]: CDTParser initialized [2025-04-14 00:07:22,554 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/rfi001_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.i [2025-04-14 00:07:23,908 INFO L538 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/31d3ae28a/5642a4f545874d959be29094909f7484/FLAG8f4748b23 [2025-04-14 00:07:24,171 INFO L389 CDTParser]: Found 1 translation units. [2025-04-14 00:07:24,172 INFO L178 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/rfi001_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.i [2025-04-14 00:07:24,189 INFO L432 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/31d3ae28a/5642a4f545874d959be29094909f7484/FLAG8f4748b23 [2025-04-14 00:07:24,958 INFO L440 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/31d3ae28a/5642a4f545874d959be29094909f7484 [2025-04-14 00:07:24,960 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-04-14 00:07:24,961 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2025-04-14 00:07:24,962 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-04-14 00:07:24,963 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-04-14 00:07:24,967 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-04-14 00:07:24,967 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.04 12:07:24" (1/1) ... [2025-04-14 00:07:24,968 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@28f625d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:07:24, skipping insertion in model container [2025-04-14 00:07:24,968 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.04 12:07:24" (1/1) ... [2025-04-14 00:07:24,999 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-04-14 00:07:25,180 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/rfi001_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.i[983,996] [2025-04-14 00:07:25,383 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-04-14 00:07:25,391 INFO L200 MainTranslator]: Completed pre-run [2025-04-14 00:07:25,415 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/rfi001_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.i[983,996] [2025-04-14 00:07:25,457 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-04-14 00:07:25,483 INFO L204 MainTranslator]: Completed translation [2025-04-14 00:07:25,484 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:07:25 WrapperNode [2025-04-14 00:07:25,484 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-04-14 00:07:25,485 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-04-14 00:07:25,485 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-04-14 00:07:25,485 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-04-14 00:07:25,489 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:07:25" (1/1) ... [2025-04-14 00:07:25,503 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:07:25" (1/1) ... [2025-04-14 00:07:25,524 INFO L138 Inliner]: procedures = 174, calls = 37, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 130 [2025-04-14 00:07:25,524 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-04-14 00:07:25,525 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-04-14 00:07:25,525 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-04-14 00:07:25,525 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-04-14 00:07:25,531 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:07:25" (1/1) ... [2025-04-14 00:07:25,531 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:07:25" (1/1) ... [2025-04-14 00:07:25,534 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:07:25" (1/1) ... [2025-04-14 00:07:25,549 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 00:07:25,550 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:07:25" (1/1) ... [2025-04-14 00:07:25,550 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:07:25" (1/1) ... [2025-04-14 00:07:25,556 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:07:25" (1/1) ... [2025-04-14 00:07:25,561 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:07:25" (1/1) ... [2025-04-14 00:07:25,563 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:07:25" (1/1) ... [2025-04-14 00:07:25,563 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:07:25" (1/1) ... [2025-04-14 00:07:25,567 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-04-14 00:07:25,568 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-04-14 00:07:25,568 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-04-14 00:07:25,568 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-04-14 00:07:25,568 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:07:25" (1/1) ... [2025-04-14 00:07:25,572 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-14 00:07:25,584 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-14 00:07:25,595 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 00:07:25,598 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 00:07:25,615 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-04-14 00:07:25,616 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-04-14 00:07:25,616 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2025-04-14 00:07:25,616 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2025-04-14 00:07:25,616 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2025-04-14 00:07:25,616 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2025-04-14 00:07:25,616 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-04-14 00:07:25,616 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-04-14 00:07:25,616 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-04-14 00:07:25,616 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-04-14 00:07:25,617 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 00:07:25,705 INFO L256 CfgBuilder]: Building ICFG [2025-04-14 00:07:25,707 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-04-14 00:07:25,905 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-04-14 00:07:25,906 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-04-14 00:07:25,906 INFO L318 CfgBuilder]: Performing block encoding [2025-04-14 00:07:26,147 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-04-14 00:07:26,147 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 14.04 12:07:26 BoogieIcfgContainer [2025-04-14 00:07:26,147 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-04-14 00:07:26,149 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-04-14 00:07:26,149 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-04-14 00:07:26,153 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-04-14 00:07:26,153 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.04 12:07:24" (1/3) ... [2025-04-14 00:07:26,154 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e27630f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.04 12:07:26, skipping insertion in model container [2025-04-14 00:07:26,154 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:07:25" (2/3) ... [2025-04-14 00:07:26,154 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e27630f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.04 12:07:26, skipping insertion in model container [2025-04-14 00:07:26,154 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 14.04 12:07:26" (3/3) ... [2025-04-14 00:07:26,155 INFO L128 eAbstractionObserver]: Analyzing ICFG rfi001_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.i [2025-04-14 00:07:26,167 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-04-14 00:07:26,168 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG rfi001_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.i that has 3 procedures, 29 locations, 26 edges, 1 initial locations, 0 loop locations, and 2 error locations. [2025-04-14 00:07:26,168 INFO L490 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-04-14 00:07:26,213 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-04-14 00:07:26,242 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 35 places, 28 transitions, 64 flow [2025-04-14 00:07:26,270 INFO L116 PetriNetUnfolderBase]: 0/26 cut-off events. [2025-04-14 00:07:26,272 INFO L117 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-04-14 00:07:26,275 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33 conditions, 26 events. 0/26 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 39 event pairs, 0 based on Foata normal form. 0/24 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2025-04-14 00:07:26,276 INFO L82 GeneralOperation]: Start removeDead. Operand has 35 places, 28 transitions, 64 flow [2025-04-14 00:07:26,278 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 33 places, 26 transitions, 58 flow [2025-04-14 00:07:26,286 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-04-14 00:07:26,298 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;@709de939, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-14 00:07:26,298 INFO L341 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2025-04-14 00:07:26,303 INFO L177 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-04-14 00:07:26,303 INFO L116 PetriNetUnfolderBase]: 0/10 cut-off events. [2025-04-14 00:07:26,303 INFO L117 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-04-14 00:07:26,304 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 00:07:26,304 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2025-04-14 00:07:26,306 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting P1Err0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-04-14 00:07:26,310 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 00:07:26,311 INFO L85 PathProgramCache]: Analyzing trace with hash 902714998, now seen corresponding path program 1 times [2025-04-14 00:07:26,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 00:07:26,317 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595946773] [2025-04-14 00:07:26,317 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-14 00:07:26,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 00:07:26,379 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-04-14 00:07:26,407 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-04-14 00:07:26,408 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-14 00:07:26,408 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 00:07:26,702 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 00:07:26,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 00:07:26,703 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595946773] [2025-04-14 00:07:26,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [595946773] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-14 00:07:26,703 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-14 00:07:26,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-04-14 00:07:26,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490975982] [2025-04-14 00:07:26,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-14 00:07:26,709 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-04-14 00:07:26,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 00:07:26,727 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-04-14 00:07:26,728 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-14 00:07:26,729 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 28 [2025-04-14 00:07:26,730 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 26 transitions, 58 flow. Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 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 00:07:26,731 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 00:07:26,731 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 28 [2025-04-14 00:07:26,731 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 00:07:26,994 INFO L116 PetriNetUnfolderBase]: 619/1019 cut-off events. [2025-04-14 00:07:26,994 INFO L117 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2025-04-14 00:07:26,999 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2053 conditions, 1019 events. 619/1019 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 4436 event pairs, 45 based on Foata normal form. 0/970 useless extension candidates. Maximal degree in co-relation 2043. Up to 911 conditions per place. [2025-04-14 00:07:27,006 INFO L140 encePairwiseOnDemand]: 25/28 looper letters, 31 selfloop transitions, 2 changer transitions 2/37 dead transitions. [2025-04-14 00:07:27,006 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 37 transitions, 150 flow [2025-04-14 00:07:27,007 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-14 00:07:27,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-04-14 00:07:27,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 48 transitions. [2025-04-14 00:07:27,015 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.5714285714285714 [2025-04-14 00:07:27,016 INFO L175 Difference]: Start difference. First operand has 33 places, 26 transitions, 58 flow. Second operand 3 states and 48 transitions. [2025-04-14 00:07:27,017 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 37 transitions, 150 flow [2025-04-14 00:07:27,021 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 37 transitions, 148 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-04-14 00:07:27,023 INFO L231 Difference]: Finished difference. Result has 32 places, 24 transitions, 56 flow [2025-04-14 00:07:27,024 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=56, PETRI_PLACES=32, PETRI_TRANSITIONS=24} [2025-04-14 00:07:27,027 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, -1 predicate places. [2025-04-14 00:07:27,028 INFO L485 AbstractCegarLoop]: Abstraction has has 32 places, 24 transitions, 56 flow [2025-04-14 00:07:27,028 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 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 00:07:27,029 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 00:07:27,029 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-14 00:07:27,030 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-04-14 00:07:27,030 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-04-14 00:07:27,030 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 00:07:27,030 INFO L85 PathProgramCache]: Analyzing trace with hash 1294880297, now seen corresponding path program 1 times [2025-04-14 00:07:27,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 00:07:27,031 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714639859] [2025-04-14 00:07:27,031 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-14 00:07:27,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 00:07:27,046 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-04-14 00:07:27,073 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-04-14 00:07:27,073 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-14 00:07:27,073 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 00:07:27,759 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 00:07:27,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 00:07:27,759 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714639859] [2025-04-14 00:07:27,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1714639859] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-14 00:07:27,759 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-14 00:07:27,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-04-14 00:07:27,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55447783] [2025-04-14 00:07:27,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-14 00:07:27,760 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-04-14 00:07:27,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 00:07:27,760 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-04-14 00:07:27,760 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-04-14 00:07:27,761 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 28 [2025-04-14 00:07:27,761 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 24 transitions, 56 flow. Second operand has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 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 00:07:27,761 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 00:07:27,761 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 28 [2025-04-14 00:07:27,761 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 00:07:27,983 INFO L116 PetriNetUnfolderBase]: 523/887 cut-off events. [2025-04-14 00:07:27,983 INFO L117 PetriNetUnfolderBase]: For 36/36 co-relation queries the response was YES. [2025-04-14 00:07:27,985 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1825 conditions, 887 events. 523/887 cut-off events. For 36/36 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 3826 event pairs, 176 based on Foata normal form. 48/934 useless extension candidates. Maximal degree in co-relation 1815. Up to 554 conditions per place. [2025-04-14 00:07:27,989 INFO L140 encePairwiseOnDemand]: 24/28 looper letters, 29 selfloop transitions, 2 changer transitions 18/51 dead transitions. [2025-04-14 00:07:27,989 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 51 transitions, 210 flow [2025-04-14 00:07:27,990 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-04-14 00:07:27,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-04-14 00:07:27,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 71 transitions. [2025-04-14 00:07:27,991 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.5071428571428571 [2025-04-14 00:07:27,992 INFO L175 Difference]: Start difference. First operand has 32 places, 24 transitions, 56 flow. Second operand 5 states and 71 transitions. [2025-04-14 00:07:27,992 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 51 transitions, 210 flow [2025-04-14 00:07:27,993 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 51 transitions, 204 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-04-14 00:07:27,994 INFO L231 Difference]: Finished difference. Result has 36 places, 24 transitions, 64 flow [2025-04-14 00:07:27,994 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=52, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=64, PETRI_PLACES=36, PETRI_TRANSITIONS=24} [2025-04-14 00:07:27,994 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 3 predicate places. [2025-04-14 00:07:27,995 INFO L485 AbstractCegarLoop]: Abstraction has has 36 places, 24 transitions, 64 flow [2025-04-14 00:07:27,995 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 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 00:07:27,995 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 00:07:27,995 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-14 00:07:27,995 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-04-14 00:07:27,995 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-04-14 00:07:27,996 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 00:07:27,996 INFO L85 PathProgramCache]: Analyzing trace with hash 403033688, now seen corresponding path program 1 times [2025-04-14 00:07:27,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 00:07:27,996 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031200789] [2025-04-14 00:07:27,996 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-14 00:07:27,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 00:07:28,007 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-04-14 00:07:28,044 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-04-14 00:07:28,045 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-14 00:07:28,045 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 00:07:28,492 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 00:07:28,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 00:07:28,493 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2031200789] [2025-04-14 00:07:28,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2031200789] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-14 00:07:28,493 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-14 00:07:28,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-04-14 00:07:28,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139037332] [2025-04-14 00:07:28,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-14 00:07:28,494 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-04-14 00:07:28,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 00:07:28,495 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-04-14 00:07:28,495 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-04-14 00:07:28,495 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 28 [2025-04-14 00:07:28,495 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 24 transitions, 64 flow. Second operand has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 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 00:07:28,495 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 00:07:28,495 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 28 [2025-04-14 00:07:28,495 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 00:07:28,695 INFO L116 PetriNetUnfolderBase]: 439/765 cut-off events. [2025-04-14 00:07:28,695 INFO L117 PetriNetUnfolderBase]: For 38/38 co-relation queries the response was YES. [2025-04-14 00:07:28,696 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1686 conditions, 765 events. 439/765 cut-off events. For 38/38 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 3337 event pairs, 67 based on Foata normal form. 48/813 useless extension candidates. Maximal degree in co-relation 1673. Up to 435 conditions per place. [2025-04-14 00:07:28,698 INFO L140 encePairwiseOnDemand]: 22/28 looper letters, 41 selfloop transitions, 6 changer transitions 2/51 dead transitions. [2025-04-14 00:07:28,698 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 51 transitions, 224 flow [2025-04-14 00:07:28,699 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-04-14 00:07:28,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-04-14 00:07:28,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 72 transitions. [2025-04-14 00:07:28,700 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.5142857142857142 [2025-04-14 00:07:28,700 INFO L175 Difference]: Start difference. First operand has 36 places, 24 transitions, 64 flow. Second operand 5 states and 72 transitions. [2025-04-14 00:07:28,700 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 51 transitions, 224 flow [2025-04-14 00:07:28,701 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 51 transitions, 212 flow, removed 2 selfloop flow, removed 4 redundant places. [2025-04-14 00:07:28,702 INFO L231 Difference]: Finished difference. Result has 37 places, 28 transitions, 100 flow [2025-04-14 00:07:28,702 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=100, PETRI_PLACES=37, PETRI_TRANSITIONS=28} [2025-04-14 00:07:28,703 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 4 predicate places. [2025-04-14 00:07:28,703 INFO L485 AbstractCegarLoop]: Abstraction has has 37 places, 28 transitions, 100 flow [2025-04-14 00:07:28,703 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 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 00:07:28,703 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 00:07:28,703 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-14 00:07:28,703 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-04-14 00:07:28,703 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-04-14 00:07:28,704 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 00:07:28,704 INFO L85 PathProgramCache]: Analyzing trace with hash 1772255141, now seen corresponding path program 1 times [2025-04-14 00:07:28,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 00:07:28,704 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490293693] [2025-04-14 00:07:28,704 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-14 00:07:28,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 00:07:28,710 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-04-14 00:07:28,746 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-04-14 00:07:28,746 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-14 00:07:28,746 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 00:07:29,056 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 00:07:29,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 00:07:29,057 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490293693] [2025-04-14 00:07:29,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1490293693] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-14 00:07:29,057 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-14 00:07:29,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-04-14 00:07:29,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923304303] [2025-04-14 00:07:29,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-14 00:07:29,057 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-04-14 00:07:29,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 00:07:29,058 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-04-14 00:07:29,058 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-04-14 00:07:29,058 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 28 [2025-04-14 00:07:29,058 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 28 transitions, 100 flow. Second operand has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-14 00:07:29,058 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 00:07:29,058 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 28 [2025-04-14 00:07:29,058 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 00:07:29,245 INFO L116 PetriNetUnfolderBase]: 365/659 cut-off events. [2025-04-14 00:07:29,245 INFO L117 PetriNetUnfolderBase]: For 456/458 co-relation queries the response was YES. [2025-04-14 00:07:29,246 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1677 conditions, 659 events. 365/659 cut-off events. For 456/458 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 2724 event pairs, 28 based on Foata normal form. 52/711 useless extension candidates. Maximal degree in co-relation 1663. Up to 246 conditions per place. [2025-04-14 00:07:29,248 INFO L140 encePairwiseOnDemand]: 20/28 looper letters, 52 selfloop transitions, 11 changer transitions 3/68 dead transitions. [2025-04-14 00:07:29,248 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 68 transitions, 342 flow [2025-04-14 00:07:29,249 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-04-14 00:07:29,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-04-14 00:07:29,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 92 transitions. [2025-04-14 00:07:29,249 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.5476190476190477 [2025-04-14 00:07:29,249 INFO L175 Difference]: Start difference. First operand has 37 places, 28 transitions, 100 flow. Second operand 6 states and 92 transitions. [2025-04-14 00:07:29,249 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 68 transitions, 342 flow [2025-04-14 00:07:29,252 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 68 transitions, 328 flow, removed 1 selfloop flow, removed 2 redundant places. [2025-04-14 00:07:29,253 INFO L231 Difference]: Finished difference. Result has 44 places, 36 transitions, 174 flow [2025-04-14 00:07:29,253 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=174, PETRI_PLACES=44, PETRI_TRANSITIONS=36} [2025-04-14 00:07:29,253 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 11 predicate places. [2025-04-14 00:07:29,253 INFO L485 AbstractCegarLoop]: Abstraction has has 44 places, 36 transitions, 174 flow [2025-04-14 00:07:29,254 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-14 00:07:29,254 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 00:07:29,254 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-14 00:07:29,254 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-04-14 00:07:29,254 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-04-14 00:07:29,254 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 00:07:29,254 INFO L85 PathProgramCache]: Analyzing trace with hash 186937976, now seen corresponding path program 1 times [2025-04-14 00:07:29,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 00:07:29,254 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765345582] [2025-04-14 00:07:29,254 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-14 00:07:29,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 00:07:29,262 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-04-14 00:07:29,292 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-04-14 00:07:29,293 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-14 00:07:29,293 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 00:07:29,428 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 00:07:29,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 00:07:29,429 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765345582] [2025-04-14 00:07:29,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1765345582] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-14 00:07:29,429 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-14 00:07:29,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-04-14 00:07:29,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944888837] [2025-04-14 00:07:29,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-14 00:07:29,429 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-04-14 00:07:29,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 00:07:29,430 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-04-14 00:07:29,430 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-04-14 00:07:29,430 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 28 [2025-04-14 00:07:29,430 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 36 transitions, 174 flow. Second operand has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 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 00:07:29,430 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 00:07:29,430 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 28 [2025-04-14 00:07:29,430 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 00:07:29,538 INFO L116 PetriNetUnfolderBase]: 206/388 cut-off events. [2025-04-14 00:07:29,538 INFO L117 PetriNetUnfolderBase]: For 541/543 co-relation queries the response was YES. [2025-04-14 00:07:29,539 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1127 conditions, 388 events. 206/388 cut-off events. For 541/543 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1385 event pairs, 74 based on Foata normal form. 22/410 useless extension candidates. Maximal degree in co-relation 1109. Up to 185 conditions per place. [2025-04-14 00:07:29,540 INFO L140 encePairwiseOnDemand]: 23/28 looper letters, 40 selfloop transitions, 9 changer transitions 2/53 dead transitions. [2025-04-14 00:07:29,540 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 53 transitions, 331 flow [2025-04-14 00:07:29,541 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-04-14 00:07:29,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-04-14 00:07:29,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 63 transitions. [2025-04-14 00:07:29,542 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.45 [2025-04-14 00:07:29,542 INFO L175 Difference]: Start difference. First operand has 44 places, 36 transitions, 174 flow. Second operand 5 states and 63 transitions. [2025-04-14 00:07:29,542 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 53 transitions, 331 flow [2025-04-14 00:07:29,545 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 53 transitions, 311 flow, removed 3 selfloop flow, removed 3 redundant places. [2025-04-14 00:07:29,545 INFO L231 Difference]: Finished difference. Result has 47 places, 36 transitions, 192 flow [2025-04-14 00:07:29,548 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=192, PETRI_PLACES=47, PETRI_TRANSITIONS=36} [2025-04-14 00:07:29,550 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 14 predicate places. [2025-04-14 00:07:29,550 INFO L485 AbstractCegarLoop]: Abstraction has has 47 places, 36 transitions, 192 flow [2025-04-14 00:07:29,550 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 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 00:07:29,550 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 00:07:29,550 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 00:07:29,550 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-04-14 00:07:29,550 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-04-14 00:07:29,550 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 00:07:29,551 INFO L85 PathProgramCache]: Analyzing trace with hash -213223542, now seen corresponding path program 1 times [2025-04-14 00:07:29,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 00:07:29,551 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246527294] [2025-04-14 00:07:29,551 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-14 00:07:29,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 00:07:29,560 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-04-14 00:07:29,575 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-04-14 00:07:29,576 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-14 00:07:29,576 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 00:07:30,001 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 00:07:30,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 00:07:30,001 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246527294] [2025-04-14 00:07:30,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1246527294] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-14 00:07:30,001 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-14 00:07:30,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-04-14 00:07:30,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116093198] [2025-04-14 00:07:30,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-14 00:07:30,002 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-04-14 00:07:30,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 00:07:30,002 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-04-14 00:07:30,002 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-04-14 00:07:30,002 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 28 [2025-04-14 00:07:30,002 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 36 transitions, 192 flow. Second operand has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 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 00:07:30,002 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 00:07:30,002 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 28 [2025-04-14 00:07:30,002 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 00:07:30,245 INFO L116 PetriNetUnfolderBase]: 237/452 cut-off events. [2025-04-14 00:07:30,245 INFO L117 PetriNetUnfolderBase]: For 482/482 co-relation queries the response was YES. [2025-04-14 00:07:30,249 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1364 conditions, 452 events. 237/452 cut-off events. For 482/482 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1663 event pairs, 52 based on Foata normal form. 4/456 useless extension candidates. Maximal degree in co-relation 1344. Up to 259 conditions per place. [2025-04-14 00:07:30,249 INFO L140 encePairwiseOnDemand]: 21/28 looper letters, 30 selfloop transitions, 3 changer transitions 39/74 dead transitions. [2025-04-14 00:07:30,250 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 74 transitions, 519 flow [2025-04-14 00:07:30,250 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-04-14 00:07:30,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-04-14 00:07:30,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 83 transitions. [2025-04-14 00:07:30,251 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.42346938775510207 [2025-04-14 00:07:30,251 INFO L175 Difference]: Start difference. First operand has 47 places, 36 transitions, 192 flow. Second operand 7 states and 83 transitions. [2025-04-14 00:07:30,251 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 74 transitions, 519 flow [2025-04-14 00:07:30,253 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 74 transitions, 469 flow, removed 12 selfloop flow, removed 4 redundant places. [2025-04-14 00:07:30,256 INFO L231 Difference]: Finished difference. Result has 53 places, 30 transitions, 140 flow [2025-04-14 00:07:30,256 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=165, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=140, PETRI_PLACES=53, PETRI_TRANSITIONS=30} [2025-04-14 00:07:30,258 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 20 predicate places. [2025-04-14 00:07:30,258 INFO L485 AbstractCegarLoop]: Abstraction has has 53 places, 30 transitions, 140 flow [2025-04-14 00:07:30,258 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 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 00:07:30,258 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 00:07:30,258 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 00:07:30,258 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-04-14 00:07:30,258 INFO L403 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-04-14 00:07:30,258 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 00:07:30,258 INFO L85 PathProgramCache]: Analyzing trace with hash -2083465276, now seen corresponding path program 2 times [2025-04-14 00:07:30,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 00:07:30,259 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618482343] [2025-04-14 00:07:30,259 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-14 00:07:30,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 00:07:30,267 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 22 statements into 1 equivalence classes. [2025-04-14 00:07:30,307 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-04-14 00:07:30,308 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-04-14 00:07:30,308 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-14 00:07:30,308 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-14 00:07:30,312 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-04-14 00:07:30,375 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-04-14 00:07:30,375 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-14 00:07:30,375 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-14 00:07:30,392 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-14 00:07:30,392 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-04-14 00:07:30,393 INFO L790 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 5 remaining) [2025-04-14 00:07:30,395 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err0ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2025-04-14 00:07:30,395 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 5 remaining) [2025-04-14 00:07:30,395 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 5 remaining) [2025-04-14 00:07:30,395 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining) [2025-04-14 00:07:30,395 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-04-14 00:07:30,396 INFO L422 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1] [2025-04-14 00:07:30,459 INFO L242 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2025-04-14 00:07:30,459 INFO L171 ceAbstractionStarter]: Computing trace abstraction results [2025-04-14 00:07:30,463 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.04 12:07:30 BasicIcfg [2025-04-14 00:07:30,463 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-04-14 00:07:30,464 INFO L158 Benchmark]: Toolchain (without parser) took 5502.37ms. Allocated memory was 155.2MB in the beginning and 352.3MB in the end (delta: 197.1MB). Free memory was 107.5MB in the beginning and 142.6MB in the end (delta: -35.1MB). Peak memory consumption was 161.5MB. Max. memory is 8.0GB. [2025-04-14 00:07:30,464 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 155.2MB. Free memory is still 83.9MB. There was no memory consumed. Max. memory is 8.0GB. [2025-04-14 00:07:30,464 INFO L158 Benchmark]: CACSL2BoogieTranslator took 521.71ms. Allocated memory is still 155.2MB. Free memory was 107.5MB in the beginning and 81.8MB in the end (delta: 25.7MB). Peak memory consumption was 25.2MB. Max. memory is 8.0GB. [2025-04-14 00:07:30,464 INFO L158 Benchmark]: Boogie Procedure Inliner took 39.66ms. Allocated memory is still 155.2MB. Free memory was 81.8MB in the beginning and 79.1MB in the end (delta: 2.6MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2025-04-14 00:07:30,464 INFO L158 Benchmark]: Boogie Preprocessor took 42.17ms. Allocated memory is still 155.2MB. Free memory was 79.1MB in the beginning and 76.7MB in the end (delta: 2.4MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2025-04-14 00:07:30,464 INFO L158 Benchmark]: IcfgBuilder took 579.75ms. Allocated memory is still 155.2MB. Free memory was 75.8MB in the beginning and 93.9MB in the end (delta: -18.1MB). Peak memory consumption was 57.5MB. Max. memory is 8.0GB. [2025-04-14 00:07:30,464 INFO L158 Benchmark]: TraceAbstraction took 4313.83ms. Allocated memory was 155.2MB in the beginning and 352.3MB in the end (delta: 197.1MB). Free memory was 93.1MB in the beginning and 142.6MB in the end (delta: -49.5MB). Peak memory consumption was 145.9MB. Max. memory is 8.0GB. [2025-04-14 00:07:30,465 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 155.2MB. Free memory is still 83.9MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 521.71ms. Allocated memory is still 155.2MB. Free memory was 107.5MB in the beginning and 81.8MB in the end (delta: 25.7MB). Peak memory consumption was 25.2MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 39.66ms. Allocated memory is still 155.2MB. Free memory was 81.8MB in the beginning and 79.1MB in the end (delta: 2.6MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * Boogie Preprocessor took 42.17ms. Allocated memory is still 155.2MB. Free memory was 79.1MB in the beginning and 76.7MB in the end (delta: 2.4MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * IcfgBuilder took 579.75ms. Allocated memory is still 155.2MB. Free memory was 75.8MB in the beginning and 93.9MB in the end (delta: -18.1MB). Peak memory consumption was 57.5MB. Max. memory is 8.0GB. * TraceAbstraction took 4313.83ms. Allocated memory was 155.2MB in the beginning and 352.3MB in the end (delta: 197.1MB). Free memory was 93.1MB in the beginning and 142.6MB in the end (delta: -49.5MB). Peak memory consumption was 145.9MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 18]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L708] 0 int __unbuffered_cnt = 0; [L710] 0 int __unbuffered_p1_EAX = 0; [L712] 0 int __unbuffered_p1_EBX = 0; [L713] 0 _Bool main$tmp_guard0; [L714] 0 _Bool main$tmp_guard1; [L716] 0 int x = 0; [L718] 0 int y = 0; [L719] 0 _Bool y$flush_delayed; [L720] 0 int y$mem_tmp; [L721] 0 _Bool y$r_buff0_thd0; [L722] 0 _Bool y$r_buff0_thd1; [L723] 0 _Bool y$r_buff0_thd2; [L724] 0 _Bool y$r_buff1_thd0; [L725] 0 _Bool y$r_buff1_thd1; [L726] 0 _Bool y$r_buff1_thd2; [L727] 0 _Bool y$read_delayed; [L728] 0 int *y$read_delayed_var; [L729] 0 int y$w_buff0; [L730] 0 _Bool y$w_buff0_used; [L731] 0 int y$w_buff1; [L732] 0 _Bool y$w_buff1_used; [L734] 0 int z = 0; [L735] 0 _Bool weak$$choice0; [L736] 0 _Bool weak$$choice2; [L802] 0 pthread_t t1603; [L803] FCALL, FORK 0 pthread_create(&t1603, ((void *)0), P0, ((void *)0)) VAL [\at(arg, Pre)={0:0}, __unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, main$tmp_guard0=0, main$tmp_guard1=0, t1603=-2, weak$$choice0=0, weak$$choice2=0, x=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=0, z=0] [L804] 0 pthread_t t1604; [L805] FCALL, FORK 0 pthread_create(&t1604, ((void *)0), P1, ((void *)0)) VAL [\at(arg, Pre)={0:0}, __unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, main$tmp_guard0=0, main$tmp_guard1=0, t1603=-2, t1604=-1, weak$$choice0=0, weak$$choice2=0, x=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=0, z=0] [L760] 2 y$w_buff1 = y$w_buff0 [L761] 2 y$w_buff0 = 2 [L762] 2 y$w_buff1_used = y$w_buff0_used [L763] 2 y$w_buff0_used = (_Bool)1 [L764] CALL 2 __VERIFIER_assert(!(y$w_buff1_used && y$w_buff0_used)) [L18] COND FALSE 2 !(!expression) [L764] RET 2 __VERIFIER_assert(!(y$w_buff1_used && y$w_buff0_used)) [L765] 2 y$r_buff1_thd0 = y$r_buff0_thd0 [L766] 2 y$r_buff1_thd1 = y$r_buff0_thd1 [L767] 2 y$r_buff1_thd2 = y$r_buff0_thd2 [L768] 2 y$r_buff0_thd2 = (_Bool)1 VAL [\at(arg, Pre)={0:0}, \at(arg, Pre)={0:0}, __unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, y=0, z=0] [L771] 2 z = 1 VAL [\at(arg, Pre)={0:0}, \at(arg, Pre)={0:0}, __unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, y=0, z=1] [L774] 2 __unbuffered_p1_EAX = z VAL [\at(arg, Pre)={0:0}, \at(arg, Pre)={0:0}, __unbuffered_cnt=0, __unbuffered_p1_EAX=1, __unbuffered_p1_EBX=0, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, y=0, z=1] [L777] 2 __unbuffered_p1_EBX = x VAL [\at(arg, Pre)={0:0}, \at(arg, Pre)={0:0}, __unbuffered_cnt=0, __unbuffered_p1_EAX=1, __unbuffered_p1_EBX=0, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, y=0, z=1] [L740] 1 x = 1 VAL [\at(arg, Pre)={0:0}, __unbuffered_cnt=0, __unbuffered_p1_EAX=1, __unbuffered_p1_EBX=0, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=1, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, y=0, z=1] [L743] 1 y = 1 VAL [\at(arg, Pre)={0:0}, __unbuffered_cnt=0, __unbuffered_p1_EAX=1, __unbuffered_p1_EBX=0, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=1, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, y=1, z=1] [L746] 1 y = y$w_buff0_used && y$r_buff0_thd1 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd1 ? y$w_buff1 : y) [L747] 1 y$w_buff0_used = y$w_buff0_used && y$r_buff0_thd1 ? (_Bool)0 : y$w_buff0_used [L748] 1 y$w_buff1_used = y$w_buff0_used && y$r_buff0_thd1 || y$w_buff1_used && y$r_buff1_thd1 ? (_Bool)0 : y$w_buff1_used [L749] 1 y$r_buff0_thd1 = y$w_buff0_used && y$r_buff0_thd1 ? (_Bool)0 : y$r_buff0_thd1 [L750] 1 y$r_buff1_thd1 = y$w_buff0_used && y$r_buff0_thd1 || y$w_buff1_used && y$r_buff1_thd1 ? (_Bool)0 : y$r_buff1_thd1 VAL [\at(arg, Pre)={0:0}, __unbuffered_cnt=0, __unbuffered_p1_EAX=1, __unbuffered_p1_EBX=0, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=1, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, y=1, z=1] [L753] 1 __unbuffered_cnt = __unbuffered_cnt + 1 VAL [\at(arg, Pre)={0:0}, __unbuffered_cnt=1, __unbuffered_p1_EAX=1, __unbuffered_p1_EBX=0, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=1, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, y=1, z=1] [L780] 2 y = y$w_buff0_used && y$r_buff0_thd2 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd2 ? y$w_buff1 : y) [L781] 2 y$w_buff0_used = y$w_buff0_used && y$r_buff0_thd2 ? (_Bool)0 : y$w_buff0_used [L782] 2 y$w_buff1_used = y$w_buff0_used && y$r_buff0_thd2 || y$w_buff1_used && y$r_buff1_thd2 ? (_Bool)0 : y$w_buff1_used [L783] 2 y$r_buff0_thd2 = y$w_buff0_used && y$r_buff0_thd2 ? (_Bool)0 : y$r_buff0_thd2 [L784] 2 y$r_buff1_thd2 = y$w_buff0_used && y$r_buff0_thd2 || y$w_buff1_used && y$r_buff1_thd2 ? (_Bool)0 : y$r_buff1_thd2 VAL [\at(arg, Pre)={0:0}, \at(arg, Pre)={0:0}, __unbuffered_cnt=1, __unbuffered_p1_EAX=1, __unbuffered_p1_EBX=0, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=1, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=2, z=1] [L787] 2 __unbuffered_cnt = __unbuffered_cnt + 1 VAL [\at(arg, Pre)={0:0}, \at(arg, Pre)={0:0}, __unbuffered_cnt=2, __unbuffered_p1_EAX=1, __unbuffered_p1_EBX=0, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=1, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=2, z=1] [L807] 0 main$tmp_guard0 = __unbuffered_cnt == 2 VAL [\at(arg, Pre)={0:0}, __unbuffered_cnt=2, __unbuffered_p1_EAX=1, __unbuffered_p1_EBX=0, arg={0:0}, main$tmp_guard0=1, main$tmp_guard1=0, t1603=-2, t1604=-1, weak$$choice0=0, weak$$choice2=0, x=1, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=2, z=1] [L809] CALL 0 assume_abort_if_not(main$tmp_guard0) [L3] COND FALSE 0 !(!cond) [L809] RET 0 assume_abort_if_not(main$tmp_guard0) [L811] 0 y = y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd0 ? y$w_buff1 : y) [L812] 0 y$w_buff0_used = y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$w_buff0_used [L813] 0 y$w_buff1_used = y$w_buff0_used && y$r_buff0_thd0 || y$w_buff1_used && y$r_buff1_thd0 ? (_Bool)0 : y$w_buff1_used [L814] 0 y$r_buff0_thd0 = y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$r_buff0_thd0 [L815] 0 y$r_buff1_thd0 = y$w_buff0_used && y$r_buff0_thd0 || y$w_buff1_used && y$r_buff1_thd0 ? (_Bool)0 : y$r_buff1_thd0 VAL [\at(arg, Pre)={0:0}, __unbuffered_cnt=2, __unbuffered_p1_EAX=1, __unbuffered_p1_EBX=0, arg={0:0}, main$tmp_guard0=1, main$tmp_guard1=0, t1603=-2, t1604=-1, weak$$choice0=0, weak$$choice2=0, x=1, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=2, z=1] [L818] 0 weak$$choice0 = __VERIFIER_nondet_bool() [L819] 0 weak$$choice2 = __VERIFIER_nondet_bool() [L820] 0 y$flush_delayed = weak$$choice2 [L821] 0 y$mem_tmp = y [L822] 0 y = !y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y : (y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff0 : y$w_buff1) [L823] 0 y$w_buff0 = weak$$choice2 ? y$w_buff0 : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff0 : (y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff0 : y$w_buff0)) [L824] 0 y$w_buff1 = weak$$choice2 ? y$w_buff1 : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff1 : (y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff1 : y$w_buff1)) [L825] 0 y$w_buff0_used = weak$$choice2 ? y$w_buff0_used : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff0_used : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$w_buff0_used)) [L826] 0 y$w_buff1_used = weak$$choice2 ? y$w_buff1_used : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff1_used : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : (_Bool)0)) [L827] 0 y$r_buff0_thd0 = weak$$choice2 ? y$r_buff0_thd0 : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$r_buff0_thd0 : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$r_buff0_thd0)) [L828] 0 y$r_buff1_thd0 = weak$$choice2 ? y$r_buff1_thd0 : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$r_buff1_thd0 : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : (_Bool)0)) [L829] 0 main$tmp_guard1 = !(y == 2 && __unbuffered_p1_EAX == 1 && __unbuffered_p1_EBX == 0) [L830] 0 y = y$flush_delayed ? y$mem_tmp : y [L831] 0 y$flush_delayed = (_Bool)0 VAL [\at(arg, Pre)={0:0}, __unbuffered_cnt=2, __unbuffered_p1_EAX=1, __unbuffered_p1_EBX=0, arg={0:0}, main$tmp_guard0=1, main$tmp_guard1=0, t1603=-2, t1604=-1, weak$$choice0=1, weak$$choice2=1, x=1, y$flush_delayed=0, y$mem_tmp=2, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=2, z=1] [L833] CALL 0 __VERIFIER_assert(main$tmp_guard1) [L18] COND TRUE 0 !expression [L18] 0 reach_error() VAL [\at(arg, Pre)={0:0}, \at(expression, Pre)=0, __unbuffered_cnt=2, __unbuffered_p1_EAX=1, __unbuffered_p1_EBX=0, arg={0:0}, expression=0, main$tmp_guard0=1, main$tmp_guard1=0, weak$$choice0=1, weak$$choice2=1, x=1, y$flush_delayed=0, y$mem_tmp=2, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=2, z=1] - UnprovableResult [Line: 18]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 805]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 803]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 48 locations, 45 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: 4.2s, OverallIterations: 7, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 230 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 230 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 13 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 511 IncrementalHoareTripleChecker+Invalid, 524 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 13 mSolverCounterUnsat, 0 mSDtfsCounter, 511 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 34 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=192occurred in iteration=5, InterpolantAutomatonStates: 31, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.3s InterpolantComputationTime, 107 NumberOfCodeBlocks, 107 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 79 ConstructedInterpolants, 0 QuantifiedInterpolants, 636 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2025-04-14 00:07:30,488 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request...