./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/xcsp/aim-100-2-0-sat-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3061b6dc Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/xcsp/aim-100-2-0-sat-1.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 53a927591d757d68a08d1e96fefc90ed63b7256a55e2eeeed2cc1fc4c6efe68b --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-18 15:25:53,034 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-18 15:25:53,091 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-18 15:25:53,098 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-18 15:25:53,100 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-18 15:25:53,127 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-18 15:25:53,129 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-18 15:25:53,129 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-18 15:25:53,130 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-18 15:25:53,131 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-18 15:25:53,131 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-18 15:25:53,146 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-18 15:25:53,147 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-18 15:25:53,149 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-18 15:25:53,149 INFO L153 SettingsManager]: * Use SBE=true [2024-11-18 15:25:53,149 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-18 15:25:53,150 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-18 15:25:53,150 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-18 15:25:53,150 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-18 15:25:53,150 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-18 15:25:53,150 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-18 15:25:53,154 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-18 15:25:53,154 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-18 15:25:53,155 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-18 15:25:53,155 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-18 15:25:53,155 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-18 15:25:53,155 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-18 15:25:53,155 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-18 15:25:53,156 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-18 15:25:53,156 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-18 15:25:53,156 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-18 15:25:53,156 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-18 15:25:53,156 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 15:25:53,156 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-18 15:25:53,157 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-18 15:25:53,157 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-18 15:25:53,157 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-18 15:25:53,157 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-18 15:25:53,157 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-18 15:25:53,157 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-18 15:25:53,157 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-18 15:25:53,158 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-18 15:25:53,158 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 53a927591d757d68a08d1e96fefc90ed63b7256a55e2eeeed2cc1fc4c6efe68b [2024-11-18 15:25:53,455 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-18 15:25:53,516 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-18 15:25:53,518 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-18 15:25:53,519 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-18 15:25:53,520 INFO L274 PluginConnector]: CDTParser initialized [2024-11-18 15:25:53,521 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/xcsp/aim-100-2-0-sat-1.c [2024-11-18 15:25:55,247 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-18 15:25:55,568 INFO L384 CDTParser]: Found 1 translation units. [2024-11-18 15:25:55,569 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/xcsp/aim-100-2-0-sat-1.c [2024-11-18 15:25:55,583 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/df80746fb/4e884880d87b4ad1b2177966650004d8/FLAG563bbf812 [2024-11-18 15:25:55,605 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/df80746fb/4e884880d87b4ad1b2177966650004d8 [2024-11-18 15:25:55,608 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-18 15:25:55,609 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-18 15:25:55,610 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-18 15:25:55,610 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-18 15:25:55,615 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-18 15:25:55,615 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 03:25:55" (1/1) ... [2024-11-18 15:25:55,616 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2fb7c3b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:25:55, skipping insertion in model container [2024-11-18 15:25:55,616 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 03:25:55" (1/1) ... [2024-11-18 15:25:55,678 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-18 15:25:56,230 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/xcsp/aim-100-2-0-sat-1.c[21205,21218] [2024-11-18 15:25:56,282 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 15:25:56,302 INFO L200 MainTranslator]: Completed pre-run [2024-11-18 15:25:56,451 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/xcsp/aim-100-2-0-sat-1.c[21205,21218] [2024-11-18 15:25:56,479 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 15:25:56,510 INFO L204 MainTranslator]: Completed translation [2024-11-18 15:25:56,510 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:25:56 WrapperNode [2024-11-18 15:25:56,511 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-18 15:25:56,511 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-18 15:25:56,512 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-18 15:25:56,512 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-18 15:25:56,517 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:25:56" (1/1) ... [2024-11-18 15:25:56,559 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:25:56" (1/1) ... [2024-11-18 15:25:56,699 INFO L138 Inliner]: procedures = 13, calls = 401, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 4102 [2024-11-18 15:25:56,700 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-18 15:25:56,700 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-18 15:25:56,704 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-18 15:25:56,704 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-18 15:25:56,720 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:25:56" (1/1) ... [2024-11-18 15:25:56,726 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:25:56" (1/1) ... [2024-11-18 15:25:56,786 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:25:56" (1/1) ... [2024-11-18 15:25:56,964 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-18 15:25:56,964 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:25:56" (1/1) ... [2024-11-18 15:25:56,964 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:25:56" (1/1) ... [2024-11-18 15:25:57,132 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:25:56" (1/1) ... [2024-11-18 15:25:57,168 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:25:56" (1/1) ... [2024-11-18 15:25:57,187 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:25:56" (1/1) ... [2024-11-18 15:25:57,204 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:25:56" (1/1) ... [2024-11-18 15:25:57,232 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-18 15:25:57,234 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-18 15:25:57,234 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-18 15:25:57,235 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-18 15:25:57,235 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:25:56" (1/1) ... [2024-11-18 15:25:57,240 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 15:25:57,250 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 15:25:57,269 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-18 15:25:57,272 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-18 15:25:57,310 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-18 15:25:57,310 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-18 15:25:57,311 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-18 15:25:57,311 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-18 15:25:57,311 INFO L130 BoogieDeclarations]: Found specification of procedure assume [2024-11-18 15:25:57,311 INFO L138 BoogieDeclarations]: Found implementation of procedure assume [2024-11-18 15:25:57,519 INFO L238 CfgBuilder]: Building ICFG [2024-11-18 15:25:57,524 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-18 15:26:03,736 INFO L? ?]: Removed 920 outVars from TransFormulas that were not future-live. [2024-11-18 15:26:03,736 INFO L287 CfgBuilder]: Performing block encoding [2024-11-18 15:26:03,797 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-18 15:26:03,797 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-18 15:26:03,797 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 03:26:03 BoogieIcfgContainer [2024-11-18 15:26:03,798 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-18 15:26:03,800 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-18 15:26:03,800 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-18 15:26:03,816 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-18 15:26:03,817 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 03:25:55" (1/3) ... [2024-11-18 15:26:03,817 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@358ae7d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 03:26:03, skipping insertion in model container [2024-11-18 15:26:03,822 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:25:56" (2/3) ... [2024-11-18 15:26:03,823 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@358ae7d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 03:26:03, skipping insertion in model container [2024-11-18 15:26:03,823 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 03:26:03" (3/3) ... [2024-11-18 15:26:03,827 INFO L112 eAbstractionObserver]: Analyzing ICFG aim-100-2-0-sat-1.c [2024-11-18 15:26:03,864 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-18 15:26:03,865 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-18 15:26:03,977 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-18 15:26:03,983 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@29a40bca, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-18 15:26:03,983 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-18 15:26:03,994 INFO L276 IsEmpty]: Start isEmpty. Operand has 1896 states, 1499 states have (on average 1.533689126084056) internal successors, (2299), 1500 states have internal predecessors, (2299), 394 states have call successors, (394), 1 states have call predecessors, (394), 1 states have return successors, (394), 394 states have call predecessors, (394), 394 states have call successors, (394) [2024-11-18 15:26:04,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2667 [2024-11-18 15:26:04,246 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:26:04,252 INFO L215 NwaCegarLoop]: trace histogram [394, 394, 394, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 1, 1, 1, 1, 1] [2024-11-18 15:26:04,253 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:26:04,270 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:26:04,271 INFO L85 PathProgramCache]: Analyzing trace with hash 125256303, now seen corresponding path program 1 times [2024-11-18 15:26:04,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:26:04,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304008193] [2024-11-18 15:26:04,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:26:04,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:26:05,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:26:22,001 INFO L134 CoverageAnalysis]: Checked inductivity of 309684 backedges. 1590 proven. 6537 refuted. 0 times theorem prover too weak. 301557 trivial. 0 not checked. [2024-11-18 15:26:22,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:26:22,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304008193] [2024-11-18 15:26:22,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1304008193] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 15:26:22,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [357366401] [2024-11-18 15:26:22,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:26:22,005 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 15:26:22,005 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 15:26:22,008 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 15:26:22,012 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-18 15:26:22,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:26:22,840 INFO L255 TraceCheckSpWp]: Trace formula consists of 5163 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-11-18 15:26:22,919 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 15:26:31,467 INFO L134 CoverageAnalysis]: Checked inductivity of 309684 backedges. 67932 proven. 4620 refuted. 0 times theorem prover too weak. 237132 trivial. 0 not checked. [2024-11-18 15:26:31,468 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 15:26:42,961 INFO L134 CoverageAnalysis]: Checked inductivity of 309684 backedges. 1500 proven. 5484 refuted. 0 times theorem prover too weak. 302700 trivial. 0 not checked. [2024-11-18 15:26:42,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [357366401] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 15:26:42,962 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 15:26:42,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 13] total 29 [2024-11-18 15:26:42,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541523261] [2024-11-18 15:26:42,967 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 15:26:42,982 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-18 15:26:42,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:26:43,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-18 15:26:43,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=684, Unknown=0, NotChecked=0, Total=812 [2024-11-18 15:26:43,027 INFO L87 Difference]: Start difference. First operand has 1896 states, 1499 states have (on average 1.533689126084056) internal successors, (2299), 1500 states have internal predecessors, (2299), 394 states have call successors, (394), 1 states have call predecessors, (394), 1 states have return successors, (394), 394 states have call predecessors, (394), 394 states have call successors, (394) Second operand has 29 states, 20 states have (on average 88.9) internal successors, (1778), 21 states have internal predecessors, (1778), 26 states have call successors, (1010), 2 states have call predecessors, (1010), 3 states have return successors, (1013), 25 states have call predecessors, (1013), 26 states have call successors, (1013) [2024-11-18 15:26:57,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:26:57,643 INFO L93 Difference]: Finished difference Result 12526 states and 21887 transitions. [2024-11-18 15:26:57,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2024-11-18 15:26:57,647 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 20 states have (on average 88.9) internal successors, (1778), 21 states have internal predecessors, (1778), 26 states have call successors, (1010), 2 states have call predecessors, (1010), 3 states have return successors, (1013), 25 states have call predecessors, (1013), 26 states have call successors, (1013) Word has length 2666 [2024-11-18 15:26:57,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:26:57,722 INFO L225 Difference]: With dead ends: 12526 [2024-11-18 15:26:57,723 INFO L226 Difference]: Without dead ends: 10633 [2024-11-18 15:26:57,741 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5399 GetRequests, 5331 SyntacticMatches, 7 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 883 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1065, Invalid=2841, Unknown=0, NotChecked=0, Total=3906 [2024-11-18 15:26:57,744 INFO L432 NwaCegarLoop]: 6098 mSDtfsCounter, 56296 mSDsluCounter, 51221 mSDsCounter, 0 mSdLazyCounter, 11762 mSolverCounterSat, 4485 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56308 SdHoareTripleChecker+Valid, 57319 SdHoareTripleChecker+Invalid, 16247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 4485 IncrementalHoareTripleChecker+Valid, 11762 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.1s IncrementalHoareTripleChecker+Time [2024-11-18 15:26:57,745 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [56308 Valid, 57319 Invalid, 16247 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [4485 Valid, 11762 Invalid, 0 Unknown, 0 Unchecked, 12.1s Time] [2024-11-18 15:26:57,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10633 states. [2024-11-18 15:26:58,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10633 to 7308. [2024-11-18 15:26:58,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7308 states, 6240 states have (on average 1.5618589743589744) internal successors, (9746), 6240 states have internal predecessors, (9746), 1066 states have call successors, (1066), 1 states have call predecessors, (1066), 1 states have return successors, (1066), 1066 states have call predecessors, (1066), 1066 states have call successors, (1066) [2024-11-18 15:26:58,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7308 states to 7308 states and 11878 transitions. [2024-11-18 15:26:58,366 INFO L78 Accepts]: Start accepts. Automaton has 7308 states and 11878 transitions. Word has length 2666 [2024-11-18 15:26:58,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:26:58,371 INFO L471 AbstractCegarLoop]: Abstraction has 7308 states and 11878 transitions. [2024-11-18 15:26:58,373 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 20 states have (on average 88.9) internal successors, (1778), 21 states have internal predecessors, (1778), 26 states have call successors, (1010), 2 states have call predecessors, (1010), 3 states have return successors, (1013), 25 states have call predecessors, (1013), 26 states have call successors, (1013) [2024-11-18 15:26:58,373 INFO L276 IsEmpty]: Start isEmpty. Operand 7308 states and 11878 transitions. [2024-11-18 15:26:58,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2669 [2024-11-18 15:26:58,665 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:26:58,666 INFO L215 NwaCegarLoop]: trace histogram [394, 394, 394, 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, 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, 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, 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, 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, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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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, 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, 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, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 15:26:58,689 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-18 15:26:58,870 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-18 15:26:58,871 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:26:58,872 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:26:58,873 INFO L85 PathProgramCache]: Analyzing trace with hash -1211649441, now seen corresponding path program 1 times [2024-11-18 15:26:58,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:26:58,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8797512] [2024-11-18 15:26:58,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:26:58,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:26:59,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:27:00,522 INFO L134 CoverageAnalysis]: Checked inductivity of 309684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 309684 trivial. 0 not checked. [2024-11-18 15:27:00,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:27:00,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8797512] [2024-11-18 15:27:00,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [8797512] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:27:00,525 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 15:27:00,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 15:27:00,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102904463] [2024-11-18 15:27:00,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:27:00,531 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 15:27:00,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:27:00,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 15:27:00,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-18 15:27:00,535 INFO L87 Difference]: Start difference. First operand 7308 states and 11878 transitions. Second operand has 4 states, 4 states have (on average 175.25) internal successors, (701), 4 states have internal predecessors, (701), 4 states have call successors, (394), 1 states have call predecessors, (394), 1 states have return successors, (394), 4 states have call predecessors, (394), 4 states have call successors, (394) [2024-11-18 15:27:01,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:27:01,264 INFO L93 Difference]: Finished difference Result 15708 states and 25523 transitions. [2024-11-18 15:27:01,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 15:27:01,266 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 175.25) internal successors, (701), 4 states have internal predecessors, (701), 4 states have call successors, (394), 1 states have call predecessors, (394), 1 states have return successors, (394), 4 states have call predecessors, (394), 4 states have call successors, (394) Word has length 2668 [2024-11-18 15:27:01,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:27:01,330 INFO L225 Difference]: With dead ends: 15708 [2024-11-18 15:27:01,334 INFO L226 Difference]: Without dead ends: 12781 [2024-11-18 15:27:01,360 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-18 15:27:01,361 INFO L432 NwaCegarLoop]: 4285 mSDtfsCounter, 1956 mSDsluCounter, 6741 mSDsCounter, 0 mSdLazyCounter, 195 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2108 SdHoareTripleChecker+Valid, 11026 SdHoareTripleChecker+Invalid, 204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-18 15:27:01,361 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2108 Valid, 11026 Invalid, 204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 195 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-18 15:27:01,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12781 states. [2024-11-18 15:27:02,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12781 to 12641. [2024-11-18 15:27:02,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12641 states, 10894 states have (on average 1.563337617036901) internal successors, (17031), 10894 states have internal predecessors, (17031), 1745 states have call successors, (1745), 1 states have call predecessors, (1745), 1 states have return successors, (1745), 1745 states have call predecessors, (1745), 1745 states have call successors, (1745) [2024-11-18 15:27:02,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12641 states to 12641 states and 20521 transitions. [2024-11-18 15:27:02,354 INFO L78 Accepts]: Start accepts. Automaton has 12641 states and 20521 transitions. Word has length 2668 [2024-11-18 15:27:02,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:27:02,357 INFO L471 AbstractCegarLoop]: Abstraction has 12641 states and 20521 transitions. [2024-11-18 15:27:02,358 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 175.25) internal successors, (701), 4 states have internal predecessors, (701), 4 states have call successors, (394), 1 states have call predecessors, (394), 1 states have return successors, (394), 4 states have call predecessors, (394), 4 states have call successors, (394) [2024-11-18 15:27:02,359 INFO L276 IsEmpty]: Start isEmpty. Operand 12641 states and 20521 transitions. [2024-11-18 15:27:02,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2669 [2024-11-18 15:27:02,414 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:27:02,415 INFO L215 NwaCegarLoop]: trace histogram [394, 394, 394, 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, 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, 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, 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, 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, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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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, 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, 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, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 15:27:02,415 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-18 15:27:02,415 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:27:02,417 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:27:02,418 INFO L85 PathProgramCache]: Analyzing trace with hash 2079516923, now seen corresponding path program 1 times [2024-11-18 15:27:02,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:27:02,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838033640] [2024-11-18 15:27:02,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:27:02,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:27:03,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:27:07,640 INFO L134 CoverageAnalysis]: Checked inductivity of 309684 backedges. 84 proven. 2268 refuted. 0 times theorem prover too weak. 307332 trivial. 0 not checked. [2024-11-18 15:27:07,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:27:07,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838033640] [2024-11-18 15:27:07,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1838033640] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 15:27:07,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [573036814] [2024-11-18 15:27:07,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:27:07,647 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 15:27:07,647 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 15:27:07,648 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 15:27:07,657 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-18 15:27:08,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:27:08,392 INFO L255 TraceCheckSpWp]: Trace formula consists of 5169 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-18 15:27:08,422 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 15:27:10,259 INFO L134 CoverageAnalysis]: Checked inductivity of 309684 backedges. 16936 proven. 2202 refuted. 0 times theorem prover too weak. 290546 trivial. 0 not checked. [2024-11-18 15:27:10,260 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 15:27:13,081 INFO L134 CoverageAnalysis]: Checked inductivity of 309684 backedges. 84 proven. 2268 refuted. 0 times theorem prover too weak. 307332 trivial. 0 not checked. [2024-11-18 15:27:13,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [573036814] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 15:27:13,082 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 15:27:13,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 11 [2024-11-18 15:27:13,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226679217] [2024-11-18 15:27:13,086 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 15:27:13,089 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-18 15:27:13,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:27:13,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-18 15:27:13,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-11-18 15:27:13,096 INFO L87 Difference]: Start difference. First operand 12641 states and 20521 transitions. Second operand has 11 states, 10 states have (on average 79.5) internal successors, (795), 10 states have internal predecessors, (795), 8 states have call successors, (433), 2 states have call predecessors, (433), 3 states have return successors, (433), 8 states have call predecessors, (433), 8 states have call successors, (433) [2024-11-18 15:27:17,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:27:17,182 INFO L93 Difference]: Finished difference Result 37041 states and 60110 transitions. [2024-11-18 15:27:17,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-18 15:27:17,183 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 79.5) internal successors, (795), 10 states have internal predecessors, (795), 8 states have call successors, (433), 2 states have call predecessors, (433), 3 states have return successors, (433), 8 states have call predecessors, (433), 8 states have call successors, (433) Word has length 2668 [2024-11-18 15:27:17,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:27:17,266 INFO L225 Difference]: With dead ends: 37041 [2024-11-18 15:27:17,266 INFO L226 Difference]: Without dead ends: 24480 [2024-11-18 15:27:17,288 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5352 GetRequests, 5334 SyntacticMatches, 4 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=170, Unknown=0, NotChecked=0, Total=240 [2024-11-18 15:27:17,290 INFO L432 NwaCegarLoop]: 4481 mSDtfsCounter, 11420 mSDsluCounter, 16607 mSDsCounter, 0 mSdLazyCounter, 3878 mSolverCounterSat, 571 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11572 SdHoareTripleChecker+Valid, 21088 SdHoareTripleChecker+Invalid, 4449 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 571 IncrementalHoareTripleChecker+Valid, 3878 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2024-11-18 15:27:17,291 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11572 Valid, 21088 Invalid, 4449 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [571 Valid, 3878 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2024-11-18 15:27:17,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24480 states. [2024-11-18 15:27:18,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24480 to 20908. [2024-11-18 15:27:18,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20908 states, 18106 states have (on average 1.5644537722301999) internal successors, (28326), 18106 states have internal predecessors, (28326), 2800 states have call successors, (2800), 1 states have call predecessors, (2800), 1 states have return successors, (2800), 2800 states have call predecessors, (2800), 2800 states have call successors, (2800) [2024-11-18 15:27:18,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20908 states to 20908 states and 33926 transitions. [2024-11-18 15:27:18,605 INFO L78 Accepts]: Start accepts. Automaton has 20908 states and 33926 transitions. Word has length 2668 [2024-11-18 15:27:18,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:27:18,608 INFO L471 AbstractCegarLoop]: Abstraction has 20908 states and 33926 transitions. [2024-11-18 15:27:18,608 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 79.5) internal successors, (795), 10 states have internal predecessors, (795), 8 states have call successors, (433), 2 states have call predecessors, (433), 3 states have return successors, (433), 8 states have call predecessors, (433), 8 states have call successors, (433) [2024-11-18 15:27:18,609 INFO L276 IsEmpty]: Start isEmpty. Operand 20908 states and 33926 transitions.