./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/pals_lcr.4.1.ufo.BOUNDED-8.pals+Problem12_label09.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/combinations/pals_lcr.4.1.ufo.BOUNDED-8.pals+Problem12_label09.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 52f0467b9e67537a0ac20514e4a1726e96ded28a47950e156d374c001df2ce1c --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-18 16:00:13,399 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-18 16:00:13,455 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-18 16:00:13,460 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-18 16:00:13,461 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-18 16:00:13,484 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-18 16:00:13,484 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-18 16:00:13,485 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-18 16:00:13,485 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-18 16:00:13,486 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-18 16:00:13,486 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-18 16:00:13,486 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-18 16:00:13,487 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-18 16:00:13,487 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-18 16:00:13,487 INFO L153 SettingsManager]: * Use SBE=true [2024-11-18 16:00:13,488 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-18 16:00:13,488 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-18 16:00:13,488 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-18 16:00:13,488 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-18 16:00:13,489 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-18 16:00:13,489 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-18 16:00:13,489 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-18 16:00:13,490 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-18 16:00:13,490 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-18 16:00:13,490 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-18 16:00:13,490 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-18 16:00:13,490 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-18 16:00:13,491 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-18 16:00:13,491 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-18 16:00:13,491 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-18 16:00:13,491 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-18 16:00:13,491 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-18 16:00:13,492 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 16:00:13,492 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-18 16:00:13,492 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-18 16:00:13,492 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-18 16:00:13,492 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-18 16:00:13,492 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-18 16:00:13,493 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-18 16:00:13,493 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-18 16:00:13,493 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-18 16:00:13,497 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-18 16:00:13,497 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 52f0467b9e67537a0ac20514e4a1726e96ded28a47950e156d374c001df2ce1c [2024-11-18 16:00:13,717 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-18 16:00:13,750 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-18 16:00:13,752 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-18 16:00:13,753 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-18 16:00:13,753 INFO L274 PluginConnector]: CDTParser initialized [2024-11-18 16:00:13,754 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/pals_lcr.4.1.ufo.BOUNDED-8.pals+Problem12_label09.c [2024-11-18 16:00:15,051 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-18 16:00:15,523 INFO L384 CDTParser]: Found 1 translation units. [2024-11-18 16:00:15,524 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.4.1.ufo.BOUNDED-8.pals+Problem12_label09.c [2024-11-18 16:00:15,552 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5d4395c86/b003d7e5f7974c12a1c9e98de0b511db/FLAG0e87dd387 [2024-11-18 16:00:15,659 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5d4395c86/b003d7e5f7974c12a1c9e98de0b511db [2024-11-18 16:00:15,662 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-18 16:00:15,663 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-18 16:00:15,663 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-18 16:00:15,664 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-18 16:00:15,668 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-18 16:00:15,669 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 04:00:15" (1/1) ... [2024-11-18 16:00:15,669 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1fb43e5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:00:15, skipping insertion in model container [2024-11-18 16:00:15,669 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 04:00:15" (1/1) ... [2024-11-18 16:00:15,748 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-18 16:00:16,046 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/combinations/pals_lcr.4.1.ufo.BOUNDED-8.pals+Problem12_label09.c[8653,8666] [2024-11-18 16:00:16,138 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/combinations/pals_lcr.4.1.ufo.BOUNDED-8.pals+Problem12_label09.c[16401,16414] [2024-11-18 16:00:16,649 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 16:00:16,658 INFO L200 MainTranslator]: Completed pre-run [2024-11-18 16:00:16,688 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/combinations/pals_lcr.4.1.ufo.BOUNDED-8.pals+Problem12_label09.c[8653,8666] [2024-11-18 16:00:16,700 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/combinations/pals_lcr.4.1.ufo.BOUNDED-8.pals+Problem12_label09.c[16401,16414] [2024-11-18 16:00:17,099 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 16:00:17,123 INFO L204 MainTranslator]: Completed translation [2024-11-18 16:00:17,123 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:00:17 WrapperNode [2024-11-18 16:00:17,123 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-18 16:00:17,124 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-18 16:00:17,124 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-18 16:00:17,124 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-18 16:00:17,129 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:00:17" (1/1) ... [2024-11-18 16:00:17,176 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:00:17" (1/1) ... [2024-11-18 16:00:17,448 INFO L138 Inliner]: procedures = 34, calls = 20, calls flagged for inlining = 15, calls inlined = 15, statements flattened = 5040 [2024-11-18 16:00:17,449 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-18 16:00:17,450 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-18 16:00:17,450 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-18 16:00:17,450 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-18 16:00:17,461 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:00:17" (1/1) ... [2024-11-18 16:00:17,462 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:00:17" (1/1) ... [2024-11-18 16:00:17,494 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:00:17" (1/1) ... [2024-11-18 16:00:17,718 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 16:00:17,719 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:00:17" (1/1) ... [2024-11-18 16:00:17,720 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:00:17" (1/1) ... [2024-11-18 16:00:17,837 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:00:17" (1/1) ... [2024-11-18 16:00:17,855 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:00:17" (1/1) ... [2024-11-18 16:00:17,875 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:00:17" (1/1) ... [2024-11-18 16:00:17,887 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:00:17" (1/1) ... [2024-11-18 16:00:17,943 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-18 16:00:17,944 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-18 16:00:17,944 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-18 16:00:17,944 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-18 16:00:17,945 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:00:17" (1/1) ... [2024-11-18 16:00:17,949 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 16:00:17,957 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 16:00:17,971 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 16:00:17,977 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 16:00:18,009 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-18 16:00:18,010 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-18 16:00:18,010 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-18 16:00:18,010 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-18 16:00:18,087 INFO L238 CfgBuilder]: Building ICFG [2024-11-18 16:00:18,089 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-18 16:00:21,285 INFO L? ?]: Removed 737 outVars from TransFormulas that were not future-live. [2024-11-18 16:00:21,286 INFO L287 CfgBuilder]: Performing block encoding [2024-11-18 16:00:21,312 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-18 16:00:21,312 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-18 16:00:21,312 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 04:00:21 BoogieIcfgContainer [2024-11-18 16:00:21,313 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-18 16:00:21,314 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-18 16:00:21,314 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-18 16:00:21,317 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-18 16:00:21,317 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 04:00:15" (1/3) ... [2024-11-18 16:00:21,317 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43b2c026 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 04:00:21, skipping insertion in model container [2024-11-18 16:00:21,317 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:00:17" (2/3) ... [2024-11-18 16:00:21,318 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43b2c026 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 04:00:21, skipping insertion in model container [2024-11-18 16:00:21,318 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 04:00:21" (3/3) ... [2024-11-18 16:00:21,318 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.4.1.ufo.BOUNDED-8.pals+Problem12_label09.c [2024-11-18 16:00:21,336 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-18 16:00:21,336 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-18 16:00:21,395 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-18 16:00:21,400 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;@3ef2e7b3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-18 16:00:21,400 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-18 16:00:21,411 INFO L276 IsEmpty]: Start isEmpty. Operand has 885 states, 882 states have (on average 1.9058956916099774) internal successors, (1681), 884 states have internal predecessors, (1681), 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) [2024-11-18 16:00:21,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-18 16:00:21,418 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:00:21,418 INFO L215 NwaCegarLoop]: trace histogram [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 16:00:21,419 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:00:21,422 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:00:21,422 INFO L85 PathProgramCache]: Analyzing trace with hash 1141430702, now seen corresponding path program 1 times [2024-11-18 16:00:21,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:00:21,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943546010] [2024-11-18 16:00:21,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:00:21,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:00:21,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:00:21,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 16:00:21,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:00:21,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943546010] [2024-11-18 16:00:21,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [943546010] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:00:21,645 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:00:21,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-18 16:00:21,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931532483] [2024-11-18 16:00:21,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:00:21,649 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-18 16:00:21,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:00:21,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-18 16:00:21,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-18 16:00:21,672 INFO L87 Difference]: Start difference. First operand has 885 states, 882 states have (on average 1.9058956916099774) internal successors, (1681), 884 states have internal predecessors, (1681), 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) Second operand has 2 states, 2 states have (on average 11.0) internal successors, (22), 2 states have internal predecessors, (22), 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) [2024-11-18 16:00:21,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:00:21,751 INFO L93 Difference]: Finished difference Result 1741 states and 3308 transitions. [2024-11-18 16:00:21,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-18 16:00:21,753 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 11.0) internal successors, (22), 2 states have internal predecessors, (22), 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) Word has length 22 [2024-11-18 16:00:21,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:00:21,769 INFO L225 Difference]: With dead ends: 1741 [2024-11-18 16:00:21,769 INFO L226 Difference]: Without dead ends: 819 [2024-11-18 16:00:21,774 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-18 16:00:21,777 INFO L432 NwaCegarLoop]: 1615 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1615 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 16:00:21,778 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1615 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 16:00:21,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 819 states. [2024-11-18 16:00:21,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 819 to 819. [2024-11-18 16:00:21,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 819 states, 817 states have (on average 1.894736842105263) internal successors, (1548), 818 states have internal predecessors, (1548), 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) [2024-11-18 16:00:21,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 819 states to 819 states and 1548 transitions. [2024-11-18 16:00:21,833 INFO L78 Accepts]: Start accepts. Automaton has 819 states and 1548 transitions. Word has length 22 [2024-11-18 16:00:21,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:00:21,833 INFO L471 AbstractCegarLoop]: Abstraction has 819 states and 1548 transitions. [2024-11-18 16:00:21,833 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 11.0) internal successors, (22), 2 states have internal predecessors, (22), 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) [2024-11-18 16:00:21,833 INFO L276 IsEmpty]: Start isEmpty. Operand 819 states and 1548 transitions. [2024-11-18 16:00:21,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-18 16:00:21,834 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:00:21,834 INFO L215 NwaCegarLoop]: trace histogram [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 16:00:21,835 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-18 16:00:21,835 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:00:21,835 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:00:21,835 INFO L85 PathProgramCache]: Analyzing trace with hash 120362348, now seen corresponding path program 1 times [2024-11-18 16:00:21,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:00:21,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [148009688] [2024-11-18 16:00:21,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:00:21,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:00:21,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:00:21,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 16:00:21,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:00:21,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [148009688] [2024-11-18 16:00:21,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [148009688] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:00:21,993 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:00:21,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 16:00:21,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717938556] [2024-11-18 16:00:21,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:00:21,994 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 16:00:21,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:00:21,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 16:00:21,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 16:00:21,997 INFO L87 Difference]: Start difference. First operand 819 states and 1548 transitions. Second operand has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 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) [2024-11-18 16:00:22,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:00:22,119 INFO L93 Difference]: Finished difference Result 895 states and 1666 transitions. [2024-11-18 16:00:22,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 16:00:22,121 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 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) Word has length 22 [2024-11-18 16:00:22,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:00:22,126 INFO L225 Difference]: With dead ends: 895 [2024-11-18 16:00:22,127 INFO L226 Difference]: Without dead ends: 855 [2024-11-18 16:00:22,128 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 16:00:22,129 INFO L432 NwaCegarLoop]: 1544 mSDtfsCounter, 56 mSDsluCounter, 4603 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 6147 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 16:00:22,130 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 6147 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 16:00:22,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 855 states. [2024-11-18 16:00:22,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 855 to 819. [2024-11-18 16:00:22,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 819 states, 817 states have (on average 1.8665850673194615) internal successors, (1525), 818 states have internal predecessors, (1525), 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) [2024-11-18 16:00:22,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 819 states to 819 states and 1525 transitions. [2024-11-18 16:00:22,152 INFO L78 Accepts]: Start accepts. Automaton has 819 states and 1525 transitions. Word has length 22 [2024-11-18 16:00:22,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:00:22,153 INFO L471 AbstractCegarLoop]: Abstraction has 819 states and 1525 transitions. [2024-11-18 16:00:22,153 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 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) [2024-11-18 16:00:22,153 INFO L276 IsEmpty]: Start isEmpty. Operand 819 states and 1525 transitions. [2024-11-18 16:00:22,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-11-18 16:00:22,154 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:00:22,154 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 16:00:22,154 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-18 16:00:22,154 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:00:22,155 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:00:22,155 INFO L85 PathProgramCache]: Analyzing trace with hash 550762215, now seen corresponding path program 1 times [2024-11-18 16:00:22,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:00:22,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574010924] [2024-11-18 16:00:22,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:00:22,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:00:22,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:00:22,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 16:00:22,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:00:22,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [574010924] [2024-11-18 16:00:22,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [574010924] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:00:22,312 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:00:22,312 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 16:00:22,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496691543] [2024-11-18 16:00:22,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:00:22,313 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 16:00:22,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:00:22,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 16:00:22,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 16:00:22,314 INFO L87 Difference]: Start difference. First operand 819 states and 1525 transitions. 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) [2024-11-18 16:00:22,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:00:22,480 INFO L93 Difference]: Finished difference Result 1107 states and 1981 transitions. [2024-11-18 16:00:22,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 16:00:22,481 INFO L78 Accepts]: Start accepts. 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) Word has length 44 [2024-11-18 16:00:22,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:00:22,486 INFO L225 Difference]: With dead ends: 1107 [2024-11-18 16:00:22,486 INFO L226 Difference]: Without dead ends: 1071 [2024-11-18 16:00:22,489 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2024-11-18 16:00:22,490 INFO L432 NwaCegarLoop]: 1521 mSDtfsCounter, 6262 mSDsluCounter, 666 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6262 SdHoareTripleChecker+Valid, 2187 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 16:00:22,493 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6262 Valid, 2187 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 16:00:22,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1071 states. [2024-11-18 16:00:22,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1071 to 853. [2024-11-18 16:00:22,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 853 states, 851 states have (on average 1.8554641598119859) internal successors, (1579), 852 states have internal predecessors, (1579), 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) [2024-11-18 16:00:22,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 853 states to 853 states and 1579 transitions. [2024-11-18 16:00:22,515 INFO L78 Accepts]: Start accepts. Automaton has 853 states and 1579 transitions. Word has length 44 [2024-11-18 16:00:22,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:00:22,517 INFO L471 AbstractCegarLoop]: Abstraction has 853 states and 1579 transitions. [2024-11-18 16:00:22,518 INFO L472 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) [2024-11-18 16:00:22,518 INFO L276 IsEmpty]: Start isEmpty. Operand 853 states and 1579 transitions. [2024-11-18 16:00:22,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-11-18 16:00:22,520 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:00:22,521 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 16:00:22,521 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-18 16:00:22,521 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:00:22,522 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:00:22,522 INFO L85 PathProgramCache]: Analyzing trace with hash -414187945, now seen corresponding path program 1 times [2024-11-18 16:00:22,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:00:22,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381131132] [2024-11-18 16:00:22,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:00:22,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:00:22,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:00:22,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 16:00:22,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:00:22,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381131132] [2024-11-18 16:00:22,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [381131132] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:00:22,652 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:00:22,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 16:00:22,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997769851] [2024-11-18 16:00:22,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:00:22,652 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 16:00:22,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:00:22,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 16:00:22,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 16:00:22,653 INFO L87 Difference]: Start difference. First operand 853 states and 1579 transitions. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 16:00:22,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:00:22,678 INFO L93 Difference]: Finished difference Result 982 states and 1782 transitions. [2024-11-18 16:00:22,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 16:00:22,679 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2024-11-18 16:00:22,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:00:22,682 INFO L225 Difference]: With dead ends: 982 [2024-11-18 16:00:22,682 INFO L226 Difference]: Without dead ends: 912 [2024-11-18 16:00:22,685 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 16:00:22,686 INFO L432 NwaCegarLoop]: 1523 mSDtfsCounter, 1474 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1474 SdHoareTripleChecker+Valid, 1575 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 16:00:22,687 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1474 Valid, 1575 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 16:00:22,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 912 states. [2024-11-18 16:00:22,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 912 to 910. [2024-11-18 16:00:22,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 910 states, 908 states have (on average 1.8359030837004404) internal successors, (1667), 909 states have internal predecessors, (1667), 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) [2024-11-18 16:00:22,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 910 states to 910 states and 1667 transitions. [2024-11-18 16:00:22,701 INFO L78 Accepts]: Start accepts. Automaton has 910 states and 1667 transitions. Word has length 46 [2024-11-18 16:00:22,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:00:22,702 INFO L471 AbstractCegarLoop]: Abstraction has 910 states and 1667 transitions. [2024-11-18 16:00:22,702 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 16:00:22,702 INFO L276 IsEmpty]: Start isEmpty. Operand 910 states and 1667 transitions. [2024-11-18 16:00:22,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-11-18 16:00:22,703 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:00:22,703 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 16:00:22,704 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-18 16:00:22,704 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:00:22,704 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:00:22,704 INFO L85 PathProgramCache]: Analyzing trace with hash -347694433, now seen corresponding path program 1 times [2024-11-18 16:00:22,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:00:22,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822105198] [2024-11-18 16:00:22,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:00:22,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:00:22,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:00:22,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 16:00:22,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:00:22,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [822105198] [2024-11-18 16:00:22,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [822105198] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:00:22,848 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:00:22,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 16:00:22,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305626912] [2024-11-18 16:00:22,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:00:22,849 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 16:00:22,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:00:22,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 16:00:22,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-18 16:00:22,850 INFO L87 Difference]: Start difference. First operand 910 states and 1667 transitions. Second operand has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 16:00:22,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:00:22,942 INFO L93 Difference]: Finished difference Result 1039 states and 1867 transitions. [2024-11-18 16:00:22,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 16:00:22,943 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2024-11-18 16:00:22,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:00:22,946 INFO L225 Difference]: With dead ends: 1039 [2024-11-18 16:00:22,947 INFO L226 Difference]: Without dead ends: 912 [2024-11-18 16:00:22,948 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-11-18 16:00:22,950 INFO L432 NwaCegarLoop]: 1519 mSDtfsCounter, 4446 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4446 SdHoareTripleChecker+Valid, 1678 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 16:00:22,950 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4446 Valid, 1678 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 16:00:22,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 912 states. [2024-11-18 16:00:22,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 912 to 910. [2024-11-18 16:00:22,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 910 states, 908 states have (on average 1.8337004405286343) internal successors, (1665), 909 states have internal predecessors, (1665), 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) [2024-11-18 16:00:22,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 910 states to 910 states and 1665 transitions. [2024-11-18 16:00:22,965 INFO L78 Accepts]: Start accepts. Automaton has 910 states and 1665 transitions. Word has length 46 [2024-11-18 16:00:22,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:00:22,966 INFO L471 AbstractCegarLoop]: Abstraction has 910 states and 1665 transitions. [2024-11-18 16:00:22,966 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 16:00:22,967 INFO L276 IsEmpty]: Start isEmpty. Operand 910 states and 1665 transitions. [2024-11-18 16:00:22,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-11-18 16:00:22,969 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:00:22,969 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 16:00:22,969 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-18 16:00:22,969 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:00:22,969 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:00:22,969 INFO L85 PathProgramCache]: Analyzing trace with hash 1691651312, now seen corresponding path program 1 times [2024-11-18 16:00:22,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:00:22,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717686655] [2024-11-18 16:00:22,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:00:22,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:00:22,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:00:23,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 16:00:23,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:00:23,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717686655] [2024-11-18 16:00:23,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [717686655] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:00:23,156 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:00:23,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 16:00:23,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970310110] [2024-11-18 16:00:23,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:00:23,156 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 16:00:23,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:00:23,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 16:00:23,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 16:00:23,157 INFO L87 Difference]: Start difference. First operand 910 states and 1665 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 16:00:23,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:00:23,195 INFO L93 Difference]: Finished difference Result 918 states and 1674 transitions. [2024-11-18 16:00:23,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 16:00:23,197 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2024-11-18 16:00:23,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:00:23,200 INFO L225 Difference]: With dead ends: 918 [2024-11-18 16:00:23,201 INFO L226 Difference]: Without dead ends: 916 [2024-11-18 16:00:23,201 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 16:00:23,202 INFO L432 NwaCegarLoop]: 1522 mSDtfsCounter, 0 mSDsluCounter, 4557 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 6079 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 16:00:23,203 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 6079 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 16:00:23,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 916 states. [2024-11-18 16:00:23,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 916 to 916. [2024-11-18 16:00:23,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 916 states, 914 states have (on average 1.8271334792122538) internal successors, (1670), 915 states have internal predecessors, (1670), 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) [2024-11-18 16:00:23,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 916 states to 916 states and 1670 transitions. [2024-11-18 16:00:23,230 INFO L78 Accepts]: Start accepts. Automaton has 916 states and 1670 transitions. Word has length 47 [2024-11-18 16:00:23,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:00:23,234 INFO L471 AbstractCegarLoop]: Abstraction has 916 states and 1670 transitions. [2024-11-18 16:00:23,234 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 16:00:23,235 INFO L276 IsEmpty]: Start isEmpty. Operand 916 states and 1670 transitions. [2024-11-18 16:00:23,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-11-18 16:00:23,235 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:00:23,235 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 16:00:23,235 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-18 16:00:23,235 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:00:23,236 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:00:23,236 INFO L85 PathProgramCache]: Analyzing trace with hash 1538886047, now seen corresponding path program 1 times [2024-11-18 16:00:23,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:00:23,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696695633] [2024-11-18 16:00:23,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:00:23,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:00:23,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:00:23,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 16:00:23,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:00:23,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696695633] [2024-11-18 16:00:23,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1696695633] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:00:23,288 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:00:23,288 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 16:00:23,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044933623] [2024-11-18 16:00:23,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:00:23,290 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 16:00:23,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:00:23,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 16:00:23,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 16:00:23,291 INFO L87 Difference]: Start difference. First operand 916 states and 1670 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 16:00:23,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:00:23,310 INFO L93 Difference]: Finished difference Result 1062 states and 1891 transitions. [2024-11-18 16:00:23,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 16:00:23,311 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2024-11-18 16:00:23,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:00:23,314 INFO L225 Difference]: With dead ends: 1062 [2024-11-18 16:00:23,314 INFO L226 Difference]: Without dead ends: 986 [2024-11-18 16:00:23,315 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 16:00:23,317 INFO L432 NwaCegarLoop]: 1567 mSDtfsCounter, 1486 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1486 SdHoareTripleChecker+Valid, 1625 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 16:00:23,317 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1486 Valid, 1625 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 16:00:23,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 986 states. [2024-11-18 16:00:23,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 986 to 984. [2024-11-18 16:00:23,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 984 states, 982 states have (on average 1.8034623217922607) internal successors, (1771), 983 states have internal predecessors, (1771), 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) [2024-11-18 16:00:23,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 984 states to 984 states and 1771 transitions. [2024-11-18 16:00:23,332 INFO L78 Accepts]: Start accepts. Automaton has 984 states and 1771 transitions. Word has length 48 [2024-11-18 16:00:23,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:00:23,332 INFO L471 AbstractCegarLoop]: Abstraction has 984 states and 1771 transitions. [2024-11-18 16:00:23,332 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 16:00:23,333 INFO L276 IsEmpty]: Start isEmpty. Operand 984 states and 1771 transitions. [2024-11-18 16:00:23,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-11-18 16:00:23,333 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:00:23,333 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 16:00:23,333 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-18 16:00:23,333 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:00:23,334 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:00:23,334 INFO L85 PathProgramCache]: Analyzing trace with hash 561679263, now seen corresponding path program 1 times [2024-11-18 16:00:23,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:00:23,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691125362] [2024-11-18 16:00:23,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:00:23,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:00:23,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:00:23,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 16:00:23,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:00:23,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691125362] [2024-11-18 16:00:23,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1691125362] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:00:23,385 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:00:23,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 16:00:23,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428664073] [2024-11-18 16:00:23,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:00:23,386 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 16:00:23,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:00:23,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 16:00:23,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 16:00:23,387 INFO L87 Difference]: Start difference. First operand 984 states and 1771 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 16:00:23,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:00:23,411 INFO L93 Difference]: Finished difference Result 1358 states and 2331 transitions. [2024-11-18 16:00:23,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 16:00:23,412 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2024-11-18 16:00:23,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:00:23,416 INFO L225 Difference]: With dead ends: 1358 [2024-11-18 16:00:23,416 INFO L226 Difference]: Without dead ends: 1159 [2024-11-18 16:00:23,417 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 16:00:23,418 INFO L432 NwaCegarLoop]: 1559 mSDtfsCounter, 1482 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1482 SdHoareTripleChecker+Valid, 1625 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 16:00:23,418 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1482 Valid, 1625 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 16:00:23,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1159 states. [2024-11-18 16:00:23,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1159 to 1157. [2024-11-18 16:00:23,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1157 states, 1155 states have (on average 1.7515151515151515) internal successors, (2023), 1156 states have internal predecessors, (2023), 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) [2024-11-18 16:00:23,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1157 states to 1157 states and 2023 transitions. [2024-11-18 16:00:23,441 INFO L78 Accepts]: Start accepts. Automaton has 1157 states and 2023 transitions. Word has length 48 [2024-11-18 16:00:23,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:00:23,442 INFO L471 AbstractCegarLoop]: Abstraction has 1157 states and 2023 transitions. [2024-11-18 16:00:23,442 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 16:00:23,442 INFO L276 IsEmpty]: Start isEmpty. Operand 1157 states and 2023 transitions. [2024-11-18 16:00:23,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-11-18 16:00:23,443 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:00:23,443 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 16:00:23,443 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-18 16:00:23,443 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:00:23,444 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:00:23,444 INFO L85 PathProgramCache]: Analyzing trace with hash -1952355169, now seen corresponding path program 1 times [2024-11-18 16:00:23,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:00:23,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751391671] [2024-11-18 16:00:23,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:00:23,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:00:23,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:00:23,498 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 16:00:23,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:00:23,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751391671] [2024-11-18 16:00:23,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1751391671] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:00:23,499 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:00:23,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 16:00:23,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797705664] [2024-11-18 16:00:23,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:00:23,500 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 16:00:23,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:00:23,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 16:00:23,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 16:00:23,501 INFO L87 Difference]: Start difference. First operand 1157 states and 2023 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 16:00:23,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:00:23,529 INFO L93 Difference]: Finished difference Result 1853 states and 3045 transitions. [2024-11-18 16:00:23,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 16:00:23,530 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2024-11-18 16:00:23,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:00:23,536 INFO L225 Difference]: With dead ends: 1853 [2024-11-18 16:00:23,536 INFO L226 Difference]: Without dead ends: 1481 [2024-11-18 16:00:23,537 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 16:00:23,537 INFO L432 NwaCegarLoop]: 1557 mSDtfsCounter, 1480 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1480 SdHoareTripleChecker+Valid, 1627 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 16:00:23,537 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1480 Valid, 1627 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 16:00:23,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1481 states. [2024-11-18 16:00:23,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1481 to 1479. [2024-11-18 16:00:23,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1479 states, 1477 states have (on average 1.6784021665538253) internal successors, (2479), 1478 states have internal predecessors, (2479), 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) [2024-11-18 16:00:23,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1479 states to 1479 states and 2479 transitions. [2024-11-18 16:00:23,568 INFO L78 Accepts]: Start accepts. Automaton has 1479 states and 2479 transitions. Word has length 48 [2024-11-18 16:00:23,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:00:23,569 INFO L471 AbstractCegarLoop]: Abstraction has 1479 states and 2479 transitions. [2024-11-18 16:00:23,569 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 16:00:23,569 INFO L276 IsEmpty]: Start isEmpty. Operand 1479 states and 2479 transitions. [2024-11-18 16:00:23,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-11-18 16:00:23,570 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:00:23,570 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 16:00:23,570 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-18 16:00:23,571 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:00:23,571 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:00:23,571 INFO L85 PathProgramCache]: Analyzing trace with hash -1517819233, now seen corresponding path program 1 times [2024-11-18 16:00:23,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:00:23,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509897543] [2024-11-18 16:00:23,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:00:23,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:00:23,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:00:23,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 16:00:23,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:00:23,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509897543] [2024-11-18 16:00:23,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [509897543] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:00:23,621 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:00:23,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 16:00:23,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920933250] [2024-11-18 16:00:23,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:00:23,622 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 16:00:23,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:00:23,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 16:00:23,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 16:00:23,623 INFO L87 Difference]: Start difference. First operand 1479 states and 2479 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 16:00:23,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:00:23,659 INFO L93 Difference]: Finished difference Result 2771 states and 4329 transitions. [2024-11-18 16:00:23,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 16:00:23,660 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2024-11-18 16:00:23,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:00:23,666 INFO L225 Difference]: With dead ends: 2771 [2024-11-18 16:00:23,666 INFO L226 Difference]: Without dead ends: 2077 [2024-11-18 16:00:23,667 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 16:00:23,667 INFO L432 NwaCegarLoop]: 1569 mSDtfsCounter, 1484 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1484 SdHoareTripleChecker+Valid, 1631 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 16:00:23,668 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1484 Valid, 1631 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 16:00:23,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2077 states. [2024-11-18 16:00:23,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2077 to 2075. [2024-11-18 16:00:23,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2075 states, 2073 states have (on average 1.5894838398456343) internal successors, (3295), 2074 states have internal predecessors, (3295), 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) [2024-11-18 16:00:23,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2075 states to 2075 states and 3295 transitions. [2024-11-18 16:00:23,711 INFO L78 Accepts]: Start accepts. Automaton has 2075 states and 3295 transitions. Word has length 48 [2024-11-18 16:00:23,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:00:23,712 INFO L471 AbstractCegarLoop]: Abstraction has 2075 states and 3295 transitions. [2024-11-18 16:00:23,712 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 16:00:23,712 INFO L276 IsEmpty]: Start isEmpty. Operand 2075 states and 3295 transitions. [2024-11-18 16:00:23,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-18 16:00:23,713 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:00:23,713 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:00:23,714 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-18 16:00:23,714 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:00:23,714 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:00:23,714 INFO L85 PathProgramCache]: Analyzing trace with hash 879514788, now seen corresponding path program 1 times [2024-11-18 16:00:23,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:00:23,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165868117] [2024-11-18 16:00:23,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:00:23,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:00:23,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:00:23,846 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-18 16:00:23,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:00:23,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1165868117] [2024-11-18 16:00:23,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1165868117] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:00:23,847 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:00:23,847 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 16:00:23,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785854083] [2024-11-18 16:00:23,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:00:23,848 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 16:00:23,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:00:23,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 16:00:23,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-18 16:00:23,848 INFO L87 Difference]: Start difference. First operand 2075 states and 3295 transitions. Second operand has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 16:00:23,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:00:23,963 INFO L93 Difference]: Finished difference Result 7165 states and 10484 transitions. [2024-11-18 16:00:23,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 16:00:23,963 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2024-11-18 16:00:23,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:00:23,978 INFO L225 Difference]: With dead ends: 7165 [2024-11-18 16:00:23,978 INFO L226 Difference]: Without dead ends: 6235 [2024-11-18 16:00:23,980 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-11-18 16:00:23,981 INFO L432 NwaCegarLoop]: 1574 mSDtfsCounter, 4647 mSDsluCounter, 1731 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4647 SdHoareTripleChecker+Valid, 3305 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 16:00:23,981 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4647 Valid, 3305 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 16:00:23,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6235 states. [2024-11-18 16:00:24,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6235 to 3187. [2024-11-18 16:00:24,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3187 states, 3185 states have (on average 1.5218210361067503) internal successors, (4847), 3186 states have internal predecessors, (4847), 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) [2024-11-18 16:00:24,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3187 states to 3187 states and 4847 transitions. [2024-11-18 16:00:24,052 INFO L78 Accepts]: Start accepts. Automaton has 3187 states and 4847 transitions. Word has length 65 [2024-11-18 16:00:24,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:00:24,052 INFO L471 AbstractCegarLoop]: Abstraction has 3187 states and 4847 transitions. [2024-11-18 16:00:24,052 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 16:00:24,052 INFO L276 IsEmpty]: Start isEmpty. Operand 3187 states and 4847 transitions. [2024-11-18 16:00:24,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-18 16:00:24,053 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:00:24,053 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:00:24,053 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-18 16:00:24,054 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:00:24,054 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:00:24,054 INFO L85 PathProgramCache]: Analyzing trace with hash -97691996, now seen corresponding path program 1 times [2024-11-18 16:00:24,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:00:24,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645917700] [2024-11-18 16:00:24,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:00:24,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:00:24,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:00:24,133 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-18 16:00:24,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:00:24,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645917700] [2024-11-18 16:00:24,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1645917700] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:00:24,134 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:00:24,134 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 16:00:24,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70395211] [2024-11-18 16:00:24,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:00:24,135 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 16:00:24,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:00:24,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 16:00:24,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-18 16:00:24,135 INFO L87 Difference]: Start difference. First operand 3187 states and 4847 transitions. Second operand has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 16:00:24,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:00:24,264 INFO L93 Difference]: Finished difference Result 8453 states and 12292 transitions. [2024-11-18 16:00:24,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 16:00:24,265 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2024-11-18 16:00:24,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:00:24,281 INFO L225 Difference]: With dead ends: 8453 [2024-11-18 16:00:24,281 INFO L226 Difference]: Without dead ends: 7163 [2024-11-18 16:00:24,284 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-11-18 16:00:24,284 INFO L432 NwaCegarLoop]: 1574 mSDtfsCounter, 4683 mSDsluCounter, 1749 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4683 SdHoareTripleChecker+Valid, 3323 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 16:00:24,284 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4683 Valid, 3323 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 16:00:24,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7163 states. [2024-11-18 16:00:24,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7163 to 4939. [2024-11-18 16:00:24,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4939 states, 4937 states have (on average 1.4759975693741139) internal successors, (7287), 4938 states have internal predecessors, (7287), 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) [2024-11-18 16:00:24,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4939 states to 4939 states and 7287 transitions. [2024-11-18 16:00:24,382 INFO L78 Accepts]: Start accepts. Automaton has 4939 states and 7287 transitions. Word has length 65 [2024-11-18 16:00:24,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:00:24,382 INFO L471 AbstractCegarLoop]: Abstraction has 4939 states and 7287 transitions. [2024-11-18 16:00:24,382 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 16:00:24,382 INFO L276 IsEmpty]: Start isEmpty. Operand 4939 states and 7287 transitions. [2024-11-18 16:00:24,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-18 16:00:24,383 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:00:24,383 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:00:24,383 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-18 16:00:24,384 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:00:24,384 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:00:24,384 INFO L85 PathProgramCache]: Analyzing trace with hash 1683240868, now seen corresponding path program 1 times [2024-11-18 16:00:24,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:00:24,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381064030] [2024-11-18 16:00:24,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:00:24,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:00:24,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:00:24,461 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-18 16:00:24,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:00:24,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381064030] [2024-11-18 16:00:24,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1381064030] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:00:24,462 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:00:24,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 16:00:24,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946382129] [2024-11-18 16:00:24,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:00:24,463 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 16:00:24,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:00:24,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 16:00:24,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-18 16:00:24,463 INFO L87 Difference]: Start difference. First operand 4939 states and 7287 transitions. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 16:00:24,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:00:24,618 INFO L93 Difference]: Finished difference Result 9741 states and 14092 transitions. [2024-11-18 16:00:24,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 16:00:24,619 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2024-11-18 16:00:24,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:00:24,631 INFO L225 Difference]: With dead ends: 9741 [2024-11-18 16:00:24,631 INFO L226 Difference]: Without dead ends: 8451 [2024-11-18 16:00:24,634 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-11-18 16:00:24,635 INFO L432 NwaCegarLoop]: 1574 mSDtfsCounter, 4677 mSDsluCounter, 1765 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4677 SdHoareTripleChecker+Valid, 3339 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 16:00:24,635 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4677 Valid, 3339 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 16:00:24,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8451 states. [2024-11-18 16:00:24,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8451 to 6227. [2024-11-18 16:00:24,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6227 states, 6225 states have (on average 1.4597590361445782) internal successors, (9087), 6226 states have internal predecessors, (9087), 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) [2024-11-18 16:00:24,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6227 states to 6227 states and 9087 transitions. [2024-11-18 16:00:24,865 INFO L78 Accepts]: Start accepts. Automaton has 6227 states and 9087 transitions. Word has length 65 [2024-11-18 16:00:24,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:00:24,866 INFO L471 AbstractCegarLoop]: Abstraction has 6227 states and 9087 transitions. [2024-11-18 16:00:24,866 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 16:00:24,866 INFO L276 IsEmpty]: Start isEmpty. Operand 6227 states and 9087 transitions. [2024-11-18 16:00:24,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-18 16:00:24,867 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:00:24,867 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:00:24,868 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-18 16:00:24,868 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:00:24,868 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:00:24,868 INFO L85 PathProgramCache]: Analyzing trace with hash 2117776804, now seen corresponding path program 1 times [2024-11-18 16:00:24,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:00:24,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [6608433] [2024-11-18 16:00:24,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:00:24,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:00:24,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:00:24,970 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-18 16:00:24,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:00:24,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [6608433] [2024-11-18 16:00:24,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [6608433] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:00:24,970 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:00:24,971 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 16:00:24,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944742093] [2024-11-18 16:00:24,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:00:24,971 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 16:00:24,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:00:24,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 16:00:24,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-18 16:00:24,972 INFO L87 Difference]: Start difference. First operand 6227 states and 9087 transitions. Second operand has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 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) [2024-11-18 16:00:25,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:00:25,201 INFO L93 Difference]: Finished difference Result 11029 states and 15892 transitions. [2024-11-18 16:00:25,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 16:00:25,202 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 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) Word has length 65 [2024-11-18 16:00:25,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:00:25,221 INFO L225 Difference]: With dead ends: 11029 [2024-11-18 16:00:25,221 INFO L226 Difference]: Without dead ends: 9739 [2024-11-18 16:00:25,226 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-11-18 16:00:25,226 INFO L432 NwaCegarLoop]: 1573 mSDtfsCounter, 4647 mSDsluCounter, 1802 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4647 SdHoareTripleChecker+Valid, 3375 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 16:00:25,226 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4647 Valid, 3375 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 16:00:25,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9739 states. [2024-11-18 16:00:25,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9739 to 7515. [2024-11-18 16:00:25,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7515 states, 7513 states have (on average 1.4490882470384667) internal successors, (10887), 7514 states have internal predecessors, (10887), 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) [2024-11-18 16:00:25,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7515 states to 7515 states and 10887 transitions. [2024-11-18 16:00:25,440 INFO L78 Accepts]: Start accepts. Automaton has 7515 states and 10887 transitions. Word has length 65 [2024-11-18 16:00:25,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:00:25,440 INFO L471 AbstractCegarLoop]: Abstraction has 7515 states and 10887 transitions. [2024-11-18 16:00:25,440 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 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) [2024-11-18 16:00:25,440 INFO L276 IsEmpty]: Start isEmpty. Operand 7515 states and 10887 transitions. [2024-11-18 16:00:25,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-11-18 16:00:25,442 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:00:25,442 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:00:25,442 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-18 16:00:25,442 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:00:25,443 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:00:25,443 INFO L85 PathProgramCache]: Analyzing trace with hash -999421060, now seen corresponding path program 1 times [2024-11-18 16:00:25,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:00:25,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873282277] [2024-11-18 16:00:25,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:00:25,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:00:25,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:00:25,521 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 16:00:25,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:00:25,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873282277] [2024-11-18 16:00:25,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1873282277] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:00:25,521 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:00:25,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 16:00:25,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079784864] [2024-11-18 16:00:25,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:00:25,522 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 16:00:25,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:00:25,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 16:00:25,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 16:00:25,523 INFO L87 Difference]: Start difference. First operand 7515 states and 10887 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 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) [2024-11-18 16:00:25,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:00:25,652 INFO L93 Difference]: Finished difference Result 14247 states and 20305 transitions. [2024-11-18 16:00:25,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 16:00:25,652 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 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) Word has length 66 [2024-11-18 16:00:25,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:00:25,663 INFO L225 Difference]: With dead ends: 14247 [2024-11-18 16:00:25,663 INFO L226 Difference]: Without dead ends: 7517 [2024-11-18 16:00:25,671 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 16:00:25,671 INFO L432 NwaCegarLoop]: 1551 mSDtfsCounter, 37 mSDsluCounter, 1513 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 3064 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 16:00:25,672 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 3064 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 16:00:25,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7517 states. [2024-11-18 16:00:25,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7517 to 7515. [2024-11-18 16:00:25,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7515 states, 7513 states have (on average 1.4325835218953813) internal successors, (10763), 7514 states have internal predecessors, (10763), 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) [2024-11-18 16:00:25,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7515 states to 7515 states and 10763 transitions. [2024-11-18 16:00:25,843 INFO L78 Accepts]: Start accepts. Automaton has 7515 states and 10763 transitions. Word has length 66 [2024-11-18 16:00:25,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:00:25,844 INFO L471 AbstractCegarLoop]: Abstraction has 7515 states and 10763 transitions. [2024-11-18 16:00:25,844 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 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) [2024-11-18 16:00:25,844 INFO L276 IsEmpty]: Start isEmpty. Operand 7515 states and 10763 transitions. [2024-11-18 16:00:25,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-18 16:00:25,845 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:00:25,845 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:00:25,845 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-18 16:00:25,845 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:00:25,846 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:00:25,846 INFO L85 PathProgramCache]: Analyzing trace with hash -1980195300, now seen corresponding path program 1 times [2024-11-18 16:00:25,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:00:25,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967081813] [2024-11-18 16:00:25,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:00:25,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:00:25,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:00:25,902 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 16:00:25,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:00:25,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [967081813] [2024-11-18 16:00:25,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [967081813] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:00:25,902 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:00:25,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 16:00:25,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772820550] [2024-11-18 16:00:25,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:00:25,902 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 16:00:25,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:00:25,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 16:00:25,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 16:00:25,903 INFO L87 Difference]: Start difference. First operand 7515 states and 10763 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 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) [2024-11-18 16:00:25,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:00:25,948 INFO L93 Difference]: Finished difference Result 10088 states and 14347 transitions. [2024-11-18 16:00:25,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 16:00:25,949 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 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) Word has length 67 [2024-11-18 16:00:25,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:00:25,954 INFO L225 Difference]: With dead ends: 10088 [2024-11-18 16:00:25,954 INFO L226 Difference]: Without dead ends: 3358 [2024-11-18 16:00:25,959 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 16:00:25,959 INFO L432 NwaCegarLoop]: 1549 mSDtfsCounter, 31 mSDsluCounter, 1512 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 3061 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 16:00:25,960 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 3061 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 16:00:25,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3358 states. [2024-11-18 16:00:25,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3358 to 3350. [2024-11-18 16:00:26,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3350 states, 3348 states have (on average 1.494026284348865) internal successors, (5002), 3349 states have internal predecessors, (5002), 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) [2024-11-18 16:00:26,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3350 states to 3350 states and 5002 transitions. [2024-11-18 16:00:26,004 INFO L78 Accepts]: Start accepts. Automaton has 3350 states and 5002 transitions. Word has length 67 [2024-11-18 16:00:26,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:00:26,004 INFO L471 AbstractCegarLoop]: Abstraction has 3350 states and 5002 transitions. [2024-11-18 16:00:26,004 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 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) [2024-11-18 16:00:26,004 INFO L276 IsEmpty]: Start isEmpty. Operand 3350 states and 5002 transitions. [2024-11-18 16:00:26,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-18 16:00:26,005 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:00:26,005 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:00:26,005 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-18 16:00:26,005 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:00:26,006 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:00:26,006 INFO L85 PathProgramCache]: Analyzing trace with hash 29640208, now seen corresponding path program 1 times [2024-11-18 16:00:26,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:00:26,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910707741] [2024-11-18 16:00:26,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:00:26,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:00:26,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:00:26,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 16:00:26,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:00:26,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910707741] [2024-11-18 16:00:26,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1910707741] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:00:26,044 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:00:26,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-18 16:00:26,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459339396] [2024-11-18 16:00:26,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:00:26,045 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 16:00:26,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:00:26,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 16:00:26,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 16:00:26,046 INFO L87 Difference]: Start difference. First operand 3350 states and 5002 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 2 states have internal predecessors, (67), 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) [2024-11-18 16:00:28,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:00:28,827 INFO L93 Difference]: Finished difference Result 4854 states and 7875 transitions. [2024-11-18 16:00:28,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 16:00:28,827 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 2 states have internal predecessors, (67), 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) Word has length 67 [2024-11-18 16:00:28,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:00:28,833 INFO L225 Difference]: With dead ends: 4854 [2024-11-18 16:00:28,833 INFO L226 Difference]: Without dead ends: 4101 [2024-11-18 16:00:28,835 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 16:00:28,835 INFO L432 NwaCegarLoop]: 554 mSDtfsCounter, 820 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2261 mSolverCounterSat, 652 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 820 SdHoareTripleChecker+Valid, 561 SdHoareTripleChecker+Invalid, 2913 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 652 IncrementalHoareTripleChecker+Valid, 2261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2024-11-18 16:00:28,835 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [820 Valid, 561 Invalid, 2913 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [652 Valid, 2261 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2024-11-18 16:00:28,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4101 states. [2024-11-18 16:00:28,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4101 to 4101. [2024-11-18 16:00:28,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4101 states, 4099 states have (on average 1.4591363747255428) internal successors, (5981), 4100 states have internal predecessors, (5981), 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) [2024-11-18 16:00:28,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4101 states to 4101 states and 5981 transitions. [2024-11-18 16:00:28,888 INFO L78 Accepts]: Start accepts. Automaton has 4101 states and 5981 transitions. Word has length 67 [2024-11-18 16:00:28,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:00:28,888 INFO L471 AbstractCegarLoop]: Abstraction has 4101 states and 5981 transitions. [2024-11-18 16:00:28,888 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 2 states have internal predecessors, (67), 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) [2024-11-18 16:00:28,889 INFO L276 IsEmpty]: Start isEmpty. Operand 4101 states and 5981 transitions. [2024-11-18 16:00:28,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-18 16:00:28,889 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:00:28,889 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:00:28,890 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-18 16:00:28,890 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:00:28,890 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:00:28,890 INFO L85 PathProgramCache]: Analyzing trace with hash 823701102, now seen corresponding path program 1 times [2024-11-18 16:00:28,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:00:28,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555678214] [2024-11-18 16:00:28,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:00:28,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:00:28,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:00:28,968 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 16:00:28,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:00:28,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555678214] [2024-11-18 16:00:28,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1555678214] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:00:28,968 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:00:28,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 16:00:28,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511401657] [2024-11-18 16:00:28,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:00:28,969 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 16:00:28,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:00:28,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 16:00:28,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 16:00:28,969 INFO L87 Difference]: Start difference. First operand 4101 states and 5981 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 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) [2024-11-18 16:00:29,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:00:29,001 INFO L93 Difference]: Finished difference Result 5381 states and 7743 transitions. [2024-11-18 16:00:29,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 16:00:29,001 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 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) Word has length 68 [2024-11-18 16:00:29,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:00:29,006 INFO L225 Difference]: With dead ends: 5381 [2024-11-18 16:00:29,006 INFO L226 Difference]: Without dead ends: 2827 [2024-11-18 16:00:29,009 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 16:00:29,009 INFO L432 NwaCegarLoop]: 1543 mSDtfsCounter, 33 mSDsluCounter, 1497 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 3040 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 16:00:29,009 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 3040 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 16:00:29,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2827 states. [2024-11-18 16:00:29,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2827 to 2825. [2024-11-18 16:00:29,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2825 states, 2823 states have (on average 1.4874247254693589) internal successors, (4199), 2824 states have internal predecessors, (4199), 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) [2024-11-18 16:00:29,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2825 states to 2825 states and 4199 transitions. [2024-11-18 16:00:29,043 INFO L78 Accepts]: Start accepts. Automaton has 2825 states and 4199 transitions. Word has length 68 [2024-11-18 16:00:29,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:00:29,044 INFO L471 AbstractCegarLoop]: Abstraction has 2825 states and 4199 transitions. [2024-11-18 16:00:29,044 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 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) [2024-11-18 16:00:29,044 INFO L276 IsEmpty]: Start isEmpty. Operand 2825 states and 4199 transitions. [2024-11-18 16:00:29,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-11-18 16:00:29,045 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:00:29,045 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:00:29,045 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-18 16:00:29,045 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:00:29,045 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:00:29,045 INFO L85 PathProgramCache]: Analyzing trace with hash -447735840, now seen corresponding path program 1 times [2024-11-18 16:00:29,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:00:29,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427999588] [2024-11-18 16:00:29,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:00:29,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:00:29,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:00:29,111 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 16:00:29,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:00:29,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [427999588] [2024-11-18 16:00:29,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [427999588] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:00:29,112 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:00:29,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 16:00:29,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790846574] [2024-11-18 16:00:29,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:00:29,112 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 16:00:29,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:00:29,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 16:00:29,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 16:00:29,113 INFO L87 Difference]: Start difference. First operand 2825 states and 4199 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 16:00:29,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:00:29,137 INFO L93 Difference]: Finished difference Result 3467 states and 5070 transitions. [2024-11-18 16:00:29,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 16:00:29,138 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2024-11-18 16:00:29,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:00:29,141 INFO L225 Difference]: With dead ends: 3467 [2024-11-18 16:00:29,141 INFO L226 Difference]: Without dead ends: 2189 [2024-11-18 16:00:29,143 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 16:00:29,143 INFO L432 NwaCegarLoop]: 1536 mSDtfsCounter, 30 mSDsluCounter, 1489 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 3025 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 16:00:29,143 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 3025 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 16:00:29,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2189 states. [2024-11-18 16:00:29,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2189 to 2187. [2024-11-18 16:00:29,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2187 states, 2185 states have (on average 1.5189931350114416) internal successors, (3319), 2186 states have internal predecessors, (3319), 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) [2024-11-18 16:00:29,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2187 states to 2187 states and 3319 transitions. [2024-11-18 16:00:29,168 INFO L78 Accepts]: Start accepts. Automaton has 2187 states and 3319 transitions. Word has length 70 [2024-11-18 16:00:29,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:00:29,168 INFO L471 AbstractCegarLoop]: Abstraction has 2187 states and 3319 transitions. [2024-11-18 16:00:29,168 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 16:00:29,168 INFO L276 IsEmpty]: Start isEmpty. Operand 2187 states and 3319 transitions. [2024-11-18 16:00:29,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-11-18 16:00:29,169 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:00:29,169 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:00:29,169 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-18 16:00:29,170 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:00:29,170 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:00:29,171 INFO L85 PathProgramCache]: Analyzing trace with hash -164665390, now seen corresponding path program 1 times [2024-11-18 16:00:29,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:00:29,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691052446] [2024-11-18 16:00:29,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:00:29,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:00:29,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:00:29,277 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-18 16:00:29,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:00:29,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691052446] [2024-11-18 16:00:29,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1691052446] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 16:00:29,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [649200285] [2024-11-18 16:00:29,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:00:29,278 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 16:00:29,278 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 16:00:29,279 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 16:00:29,281 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 16:00:29,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:00:29,396 INFO L255 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-18 16:00:29,401 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 16:00:29,818 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 11 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 16:00:29,818 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 16:00:30,426 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 11 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 16:00:30,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [649200285] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 16:00:30,427 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 16:00:30,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 9, 9] total 20 [2024-11-18 16:00:30,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889422199] [2024-11-18 16:00:30,427 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 16:00:30,428 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-18 16:00:30,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:00:30,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-18 16:00:30,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=314, Unknown=0, NotChecked=0, Total=380 [2024-11-18 16:00:30,428 INFO L87 Difference]: Start difference. First operand 2187 states and 3319 transitions. Second operand has 20 states, 20 states have (on average 9.55) internal successors, (191), 20 states have internal predecessors, (191), 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) [2024-11-18 16:00:31,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:00:31,173 INFO L93 Difference]: Finished difference Result 4175 states and 5924 transitions. [2024-11-18 16:00:31,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-18 16:00:31,174 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 9.55) internal successors, (191), 20 states have internal predecessors, (191), 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) Word has length 72 [2024-11-18 16:00:31,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:00:31,180 INFO L225 Difference]: With dead ends: 4175 [2024-11-18 16:00:31,180 INFO L226 Difference]: Without dead ends: 3535 [2024-11-18 16:00:31,181 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 326 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=394, Invalid=1246, Unknown=0, NotChecked=0, Total=1640 [2024-11-18 16:00:31,182 INFO L432 NwaCegarLoop]: 1496 mSDtfsCounter, 11192 mSDsluCounter, 3200 mSDsCounter, 0 mSdLazyCounter, 384 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11192 SdHoareTripleChecker+Valid, 4696 SdHoareTripleChecker+Invalid, 399 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 384 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-18 16:00:31,183 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11192 Valid, 4696 Invalid, 399 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 384 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-18 16:00:31,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3535 states. [2024-11-18 16:00:31,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3535 to 3383. [2024-11-18 16:00:31,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3383 states, 3381 states have (on average 1.4223602484472049) internal successors, (4809), 3382 states have internal predecessors, (4809), 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) [2024-11-18 16:00:31,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3383 states to 3383 states and 4809 transitions. [2024-11-18 16:00:31,234 INFO L78 Accepts]: Start accepts. Automaton has 3383 states and 4809 transitions. Word has length 72 [2024-11-18 16:00:31,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:00:31,234 INFO L471 AbstractCegarLoop]: Abstraction has 3383 states and 4809 transitions. [2024-11-18 16:00:31,234 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 9.55) internal successors, (191), 20 states have internal predecessors, (191), 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) [2024-11-18 16:00:31,234 INFO L276 IsEmpty]: Start isEmpty. Operand 3383 states and 4809 transitions. [2024-11-18 16:00:31,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-11-18 16:00:31,236 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:00:31,237 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:00:31,252 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-18 16:00:31,437 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 16:00:31,438 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:00:31,438 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:00:31,438 INFO L85 PathProgramCache]: Analyzing trace with hash -790906490, now seen corresponding path program 1 times [2024-11-18 16:00:31,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:00:31,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73653012] [2024-11-18 16:00:31,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:00:31,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:00:31,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:00:32,944 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 7 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 16:00:32,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:00:32,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [73653012] [2024-11-18 16:00:32,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [73653012] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 16:00:32,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1870288173] [2024-11-18 16:00:32,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:00:32,945 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 16:00:32,945 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 16:00:32,946 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 16:00:32,947 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 16:00:33,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:00:33,040 INFO L255 TraceCheckSpWp]: Trace formula consists of 363 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-18 16:00:33,042 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 16:00:33,381 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 16:00:33,381 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 16:00:34,177 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 16:00:34,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1870288173] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 16:00:34,177 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 16:00:34,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 9] total 27 [2024-11-18 16:00:34,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751078948] [2024-11-18 16:00:34,177 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 16:00:34,178 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-18 16:00:34,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:00:34,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-18 16:00:34,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=650, Unknown=0, NotChecked=0, Total=756 [2024-11-18 16:00:34,179 INFO L87 Difference]: Start difference. First operand 3383 states and 4809 transitions. Second operand has 28 states, 28 states have (on average 6.607142857142857) internal successors, (185), 27 states have internal predecessors, (185), 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) [2024-11-18 16:00:35,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:00:35,508 INFO L93 Difference]: Finished difference Result 7792 states and 10540 transitions. [2024-11-18 16:00:35,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-11-18 16:00:35,509 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 6.607142857142857) internal successors, (185), 27 states have internal predecessors, (185), 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) Word has length 73 [2024-11-18 16:00:35,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:00:35,520 INFO L225 Difference]: With dead ends: 7792 [2024-11-18 16:00:35,520 INFO L226 Difference]: Without dead ends: 6249 [2024-11-18 16:00:35,522 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 713 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=627, Invalid=2453, Unknown=0, NotChecked=0, Total=3080 [2024-11-18 16:00:35,523 INFO L432 NwaCegarLoop]: 1498 mSDtfsCounter, 17168 mSDsluCounter, 4854 mSDsCounter, 0 mSdLazyCounter, 562 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17168 SdHoareTripleChecker+Valid, 6352 SdHoareTripleChecker+Invalid, 594 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 562 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-18 16:00:35,523 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [17168 Valid, 6352 Invalid, 594 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 562 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-18 16:00:35,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6249 states. [2024-11-18 16:00:35,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6249 to 6207. [2024-11-18 16:00:35,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6207 states, 6205 states have (on average 1.3598710717163578) internal successors, (8438), 6206 states have internal predecessors, (8438), 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) [2024-11-18 16:00:35,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6207 states to 6207 states and 8438 transitions. [2024-11-18 16:00:35,704 INFO L78 Accepts]: Start accepts. Automaton has 6207 states and 8438 transitions. Word has length 73 [2024-11-18 16:00:35,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:00:35,705 INFO L471 AbstractCegarLoop]: Abstraction has 6207 states and 8438 transitions. [2024-11-18 16:00:35,705 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 6.607142857142857) internal successors, (185), 27 states have internal predecessors, (185), 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) [2024-11-18 16:00:35,705 INFO L276 IsEmpty]: Start isEmpty. Operand 6207 states and 8438 transitions. [2024-11-18 16:00:35,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-11-18 16:00:35,706 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:00:35,706 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:00:35,731 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-18 16:00:35,907 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-11-18 16:00:35,907 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:00:35,908 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:00:35,908 INFO L85 PathProgramCache]: Analyzing trace with hash 1677867256, now seen corresponding path program 1 times [2024-11-18 16:00:35,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:00:35,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830138851] [2024-11-18 16:00:35,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:00:35,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:00:35,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:00:36,548 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 16:00:36,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:00:36,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830138851] [2024-11-18 16:00:36,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [830138851] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 16:00:36,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [818140448] [2024-11-18 16:00:36,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:00:36,549 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 16:00:36,550 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 16:00:36,552 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 16:00:36,556 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-18 16:00:36,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:00:36,653 INFO L255 TraceCheckSpWp]: Trace formula consists of 365 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-18 16:00:36,655 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 16:00:37,028 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 16:00:37,029 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 16:00:37,741 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 16:00:37,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [818140448] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 16:00:37,741 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 16:00:37,741 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2024-11-18 16:00:37,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442251178] [2024-11-18 16:00:37,741 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 16:00:37,742 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-18 16:00:37,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:00:37,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-18 16:00:37,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=343, Unknown=0, NotChecked=0, Total=420 [2024-11-18 16:00:37,743 INFO L87 Difference]: Start difference. First operand 6207 states and 8438 transitions. Second operand has 21 states, 21 states have (on average 7.9523809523809526) internal successors, (167), 20 states have internal predecessors, (167), 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) [2024-11-18 16:00:38,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:00:38,131 INFO L93 Difference]: Finished difference Result 10451 states and 13991 transitions. [2024-11-18 16:00:38,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-18 16:00:38,132 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 7.9523809523809526) internal successors, (167), 20 states have internal predecessors, (167), 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) Word has length 73 [2024-11-18 16:00:38,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:00:38,140 INFO L225 Difference]: With dead ends: 10451 [2024-11-18 16:00:38,141 INFO L226 Difference]: Without dead ends: 6371 [2024-11-18 16:00:38,145 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 159 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=228, Invalid=702, Unknown=0, NotChecked=0, Total=930 [2024-11-18 16:00:38,146 INFO L432 NwaCegarLoop]: 1498 mSDtfsCounter, 13715 mSDsluCounter, 4694 mSDsCounter, 0 mSdLazyCounter, 348 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13715 SdHoareTripleChecker+Valid, 6192 SdHoareTripleChecker+Invalid, 360 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 348 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 16:00:38,146 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13715 Valid, 6192 Invalid, 360 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 348 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 16:00:38,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6371 states. [2024-11-18 16:00:38,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6371 to 6051. [2024-11-18 16:00:38,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6051 states, 6049 states have (on average 1.3506364688378245) internal successors, (8170), 6050 states have internal predecessors, (8170), 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) [2024-11-18 16:00:38,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6051 states to 6051 states and 8170 transitions. [2024-11-18 16:00:38,249 INFO L78 Accepts]: Start accepts. Automaton has 6051 states and 8170 transitions. Word has length 73 [2024-11-18 16:00:38,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:00:38,249 INFO L471 AbstractCegarLoop]: Abstraction has 6051 states and 8170 transitions. [2024-11-18 16:00:38,250 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 7.9523809523809526) internal successors, (167), 20 states have internal predecessors, (167), 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) [2024-11-18 16:00:38,250 INFO L276 IsEmpty]: Start isEmpty. Operand 6051 states and 8170 transitions. [2024-11-18 16:00:38,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-11-18 16:00:38,251 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:00:38,251 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:00:38,268 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-18 16:00:38,451 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 16:00:38,452 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:00:38,452 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:00:38,452 INFO L85 PathProgramCache]: Analyzing trace with hash -1338386780, now seen corresponding path program 1 times [2024-11-18 16:00:38,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:00:38,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627321587] [2024-11-18 16:00:38,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:00:38,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:00:38,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:00:38,872 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 16:00:38,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:00:38,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627321587] [2024-11-18 16:00:38,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1627321587] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 16:00:38,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [914869613] [2024-11-18 16:00:38,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:00:38,873 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 16:00:38,873 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 16:00:38,874 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 16:00:38,875 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-18 16:00:38,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:00:38,972 INFO L255 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-18 16:00:38,974 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 16:00:39,436 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 16:00:39,437 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 16:00:40,213 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 16:00:40,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [914869613] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 16:00:40,214 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 16:00:40,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12, 13] total 29 [2024-11-18 16:00:40,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799834341] [2024-11-18 16:00:40,214 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 16:00:40,214 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-18 16:00:40,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:00:40,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-18 16:00:40,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=668, Unknown=0, NotChecked=0, Total=812 [2024-11-18 16:00:40,215 INFO L87 Difference]: Start difference. First operand 6051 states and 8170 transitions. Second operand has 29 states, 29 states have (on average 6.551724137931035) internal successors, (190), 29 states have internal predecessors, (190), 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) [2024-11-18 16:00:40,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:00:40,913 INFO L93 Difference]: Finished difference Result 14511 states and 19091 transitions. [2024-11-18 16:00:40,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-18 16:00:40,914 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 6.551724137931035) internal successors, (190), 29 states have internal predecessors, (190), 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) Word has length 74 [2024-11-18 16:00:40,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:00:40,930 INFO L225 Difference]: With dead ends: 14511 [2024-11-18 16:00:40,930 INFO L226 Difference]: Without dead ends: 10563 [2024-11-18 16:00:40,936 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 436 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=434, Invalid=1458, Unknown=0, NotChecked=0, Total=1892 [2024-11-18 16:00:40,937 INFO L432 NwaCegarLoop]: 1513 mSDtfsCounter, 13704 mSDsluCounter, 6403 mSDsCounter, 0 mSdLazyCounter, 526 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13704 SdHoareTripleChecker+Valid, 7916 SdHoareTripleChecker+Invalid, 550 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 526 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 16:00:40,937 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13704 Valid, 7916 Invalid, 550 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 526 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 16:00:40,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10563 states. [2024-11-18 16:00:41,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10563 to 10447. [2024-11-18 16:00:41,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10447 states, 10445 states have (on average 1.3081857348013404) internal successors, (13664), 10446 states have internal predecessors, (13664), 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) [2024-11-18 16:00:41,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10447 states to 10447 states and 13664 transitions. [2024-11-18 16:00:41,143 INFO L78 Accepts]: Start accepts. Automaton has 10447 states and 13664 transitions. Word has length 74 [2024-11-18 16:00:41,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:00:41,143 INFO L471 AbstractCegarLoop]: Abstraction has 10447 states and 13664 transitions. [2024-11-18 16:00:41,143 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 6.551724137931035) internal successors, (190), 29 states have internal predecessors, (190), 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) [2024-11-18 16:00:41,143 INFO L276 IsEmpty]: Start isEmpty. Operand 10447 states and 13664 transitions. [2024-11-18 16:00:41,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-11-18 16:00:41,144 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:00:41,145 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:00:41,159 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-18 16:00:41,348 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 16:00:41,350 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:00:41,350 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:00:41,350 INFO L85 PathProgramCache]: Analyzing trace with hash -1997806360, now seen corresponding path program 1 times [2024-11-18 16:00:41,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:00:41,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223490091] [2024-11-18 16:00:41,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:00:41,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:00:41,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:00:42,139 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 16:00:42,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:00:42,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1223490091] [2024-11-18 16:00:42,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1223490091] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 16:00:42,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2137449915] [2024-11-18 16:00:42,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:00:42,140 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 16:00:42,140 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 16:00:42,144 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 16:00:42,149 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-18 16:00:42,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:00:42,242 INFO L255 TraceCheckSpWp]: Trace formula consists of 369 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-18 16:00:42,244 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 16:00:42,859 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 16:00:42,859 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 16:00:43,825 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 16:00:43,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2137449915] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 16:00:43,826 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 16:00:43,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 13] total 35 [2024-11-18 16:00:43,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479671709] [2024-11-18 16:00:43,826 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 16:00:43,827 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-11-18 16:00:43,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:00:43,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-11-18 16:00:43,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=1074, Unknown=0, NotChecked=0, Total=1190 [2024-11-18 16:00:43,828 INFO L87 Difference]: Start difference. First operand 10447 states and 13664 transitions. Second operand has 35 states, 35 states have (on average 5.9714285714285715) internal successors, (209), 35 states have internal predecessors, (209), 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) [2024-11-18 16:00:51,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:00:51,370 INFO L93 Difference]: Finished difference Result 23427 states and 30532 transitions. [2024-11-18 16:00:51,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2024-11-18 16:00:51,371 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 5.9714285714285715) internal successors, (209), 35 states have internal predecessors, (209), 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) Word has length 75 [2024-11-18 16:00:51,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:00:51,394 INFO L225 Difference]: With dead ends: 23427 [2024-11-18 16:00:51,394 INFO L226 Difference]: Without dead ends: 18769 [2024-11-18 16:00:51,404 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4615 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=2795, Invalid=11247, Unknown=0, NotChecked=0, Total=14042 [2024-11-18 16:00:51,405 INFO L432 NwaCegarLoop]: 1533 mSDtfsCounter, 15990 mSDsluCounter, 23012 mSDsCounter, 0 mSdLazyCounter, 1580 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15990 SdHoareTripleChecker+Valid, 24545 SdHoareTripleChecker+Invalid, 1651 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 1580 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-18 16:00:51,405 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [15990 Valid, 24545 Invalid, 1651 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [71 Valid, 1580 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-18 16:00:51,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18769 states. [2024-11-18 16:00:51,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18769 to 8990. [2024-11-18 16:00:51,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8990 states, 8988 states have (on average 1.3166444147752558) internal successors, (11834), 8989 states have internal predecessors, (11834), 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) [2024-11-18 16:00:51,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8990 states to 8990 states and 11834 transitions. [2024-11-18 16:00:51,675 INFO L78 Accepts]: Start accepts. Automaton has 8990 states and 11834 transitions. Word has length 75 [2024-11-18 16:00:51,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:00:51,676 INFO L471 AbstractCegarLoop]: Abstraction has 8990 states and 11834 transitions. [2024-11-18 16:00:51,676 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 5.9714285714285715) internal successors, (209), 35 states have internal predecessors, (209), 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) [2024-11-18 16:00:51,676 INFO L276 IsEmpty]: Start isEmpty. Operand 8990 states and 11834 transitions. [2024-11-18 16:00:51,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-11-18 16:00:51,677 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:00:51,677 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:00:51,690 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-18 16:00:51,881 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-11-18 16:00:51,881 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:00:51,882 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:00:51,882 INFO L85 PathProgramCache]: Analyzing trace with hash 19060712, now seen corresponding path program 1 times [2024-11-18 16:00:51,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:00:51,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509052570] [2024-11-18 16:00:51,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:00:51,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:00:51,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:00:52,480 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 16:00:52,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:00:52,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509052570] [2024-11-18 16:00:52,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [509052570] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 16:00:52,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2006162008] [2024-11-18 16:00:52,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:00:52,481 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 16:00:52,481 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 16:00:52,483 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 16:00:52,485 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-18 16:00:52,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:00:52,594 INFO L255 TraceCheckSpWp]: Trace formula consists of 369 conjuncts, 50 conjuncts are in the unsatisfiable core [2024-11-18 16:00:52,597 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 16:00:55,907 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 16:00:55,907 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 16:00:59,619 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 16:00:59,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2006162008] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 16:00:59,619 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 16:00:59,619 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 27, 23] total 58 [2024-11-18 16:00:59,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071904590] [2024-11-18 16:00:59,619 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 16:00:59,620 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2024-11-18 16:00:59,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:00:59,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2024-11-18 16:00:59,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=449, Invalid=2857, Unknown=0, NotChecked=0, Total=3306 [2024-11-18 16:00:59,622 INFO L87 Difference]: Start difference. First operand 8990 states and 11834 transitions. Second operand has 58 states, 58 states have (on average 3.603448275862069) internal successors, (209), 58 states have internal predecessors, (209), 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) [2024-11-18 16:01:15,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:01:15,601 INFO L93 Difference]: Finished difference Result 12651 states and 16513 transitions. [2024-11-18 16:01:15,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2024-11-18 16:01:15,602 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 58 states have (on average 3.603448275862069) internal successors, (209), 58 states have internal predecessors, (209), 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) Word has length 75 [2024-11-18 16:01:15,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:01:15,613 INFO L225 Difference]: With dead ends: 12651 [2024-11-18 16:01:15,613 INFO L226 Difference]: Without dead ends: 8129 [2024-11-18 16:01:15,623 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 243 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 139 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5411 ImplicationChecksByTransitivity, 16.8s TimeCoverageRelationStatistics Valid=3468, Invalid=16272, Unknown=0, NotChecked=0, Total=19740 [2024-11-18 16:01:15,624 INFO L432 NwaCegarLoop]: 1527 mSDtfsCounter, 28220 mSDsluCounter, 24539 mSDsCounter, 0 mSdLazyCounter, 2158 mSolverCounterSat, 111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28220 SdHoareTripleChecker+Valid, 26066 SdHoareTripleChecker+Invalid, 2269 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 2158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-18 16:01:15,625 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [28220 Valid, 26066 Invalid, 2269 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [111 Valid, 2158 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-18 16:01:15,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8129 states. [2024-11-18 16:01:15,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8129 to 5866. [2024-11-18 16:01:15,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5866 states, 5864 states have (on average 1.3533424283765347) internal successors, (7936), 5865 states have internal predecessors, (7936), 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) [2024-11-18 16:01:15,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5866 states to 5866 states and 7936 transitions. [2024-11-18 16:01:15,807 INFO L78 Accepts]: Start accepts. Automaton has 5866 states and 7936 transitions. Word has length 75 [2024-11-18 16:01:15,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:01:15,807 INFO L471 AbstractCegarLoop]: Abstraction has 5866 states and 7936 transitions. [2024-11-18 16:01:15,807 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 58 states have (on average 3.603448275862069) internal successors, (209), 58 states have internal predecessors, (209), 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) [2024-11-18 16:01:15,807 INFO L276 IsEmpty]: Start isEmpty. Operand 5866 states and 7936 transitions. [2024-11-18 16:01:15,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-11-18 16:01:15,808 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:01:15,808 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:01:15,821 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-18 16:01:16,012 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 16:01:16,013 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:01:16,013 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:01:16,013 INFO L85 PathProgramCache]: Analyzing trace with hash -1809278814, now seen corresponding path program 1 times [2024-11-18 16:01:16,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:01:16,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899215847] [2024-11-18 16:01:16,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:01:16,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:01:16,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:01:17,671 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 7 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 16:01:17,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:01:17,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [899215847] [2024-11-18 16:01:17,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [899215847] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 16:01:17,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1949689605] [2024-11-18 16:01:17,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:01:17,672 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 16:01:17,672 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 16:01:17,674 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 16:01:17,675 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-18 16:01:17,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:01:17,782 INFO L255 TraceCheckSpWp]: Trace formula consists of 369 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-11-18 16:01:17,784 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 16:01:20,270 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 11 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 16:01:20,271 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 16:01:22,572 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 16:01:22,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1949689605] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 16:01:22,573 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 16:01:22,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 17, 20] total 59 [2024-11-18 16:01:22,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482721781] [2024-11-18 16:01:22,573 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 16:01:22,573 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2024-11-18 16:01:22,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:01:22,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2024-11-18 16:01:22,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=253, Invalid=3169, Unknown=0, NotChecked=0, Total=3422 [2024-11-18 16:01:22,575 INFO L87 Difference]: Start difference. First operand 5866 states and 7936 transitions. Second operand has 59 states, 59 states have (on average 3.440677966101695) internal successors, (203), 59 states have internal predecessors, (203), 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) [2024-11-18 16:01:37,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:01:37,377 INFO L93 Difference]: Finished difference Result 18688 states and 24652 transitions. [2024-11-18 16:01:37,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2024-11-18 16:01:37,378 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 59 states have (on average 3.440677966101695) internal successors, (203), 59 states have internal predecessors, (203), 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) Word has length 76 [2024-11-18 16:01:37,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:01:37,396 INFO L225 Difference]: With dead ends: 18688 [2024-11-18 16:01:37,397 INFO L226 Difference]: Without dead ends: 16175 [2024-11-18 16:01:37,405 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 261 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 142 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5411 ImplicationChecksByTransitivity, 14.3s TimeCoverageRelationStatistics Valid=2817, Invalid=17775, Unknown=0, NotChecked=0, Total=20592 [2024-11-18 16:01:37,405 INFO L432 NwaCegarLoop]: 1496 mSDtfsCounter, 40027 mSDsluCounter, 24385 mSDsCounter, 0 mSdLazyCounter, 2855 mSolverCounterSat, 138 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40027 SdHoareTripleChecker+Valid, 25881 SdHoareTripleChecker+Invalid, 2993 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 138 IncrementalHoareTripleChecker+Valid, 2855 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-11-18 16:01:37,405 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [40027 Valid, 25881 Invalid, 2993 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [138 Valid, 2855 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-11-18 16:01:37,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16175 states. [2024-11-18 16:01:37,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16175 to 5707. [2024-11-18 16:01:37,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5707 states, 5705 states have (on average 1.3607361963190183) internal successors, (7763), 5706 states have internal predecessors, (7763), 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) [2024-11-18 16:01:37,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5707 states to 5707 states and 7763 transitions. [2024-11-18 16:01:37,677 INFO L78 Accepts]: Start accepts. Automaton has 5707 states and 7763 transitions. Word has length 76 [2024-11-18 16:01:37,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:01:37,677 INFO L471 AbstractCegarLoop]: Abstraction has 5707 states and 7763 transitions. [2024-11-18 16:01:37,677 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 59 states have (on average 3.440677966101695) internal successors, (203), 59 states have internal predecessors, (203), 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) [2024-11-18 16:01:37,678 INFO L276 IsEmpty]: Start isEmpty. Operand 5707 states and 7763 transitions. [2024-11-18 16:01:37,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2024-11-18 16:01:37,680 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:01:37,680 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:01:37,695 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-18 16:01:37,881 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 16:01:37,881 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:01:37,882 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:01:37,882 INFO L85 PathProgramCache]: Analyzing trace with hash 820596566, now seen corresponding path program 1 times [2024-11-18 16:01:37,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:01:37,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770821159] [2024-11-18 16:01:37,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:01:37,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:01:37,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:01:38,517 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 30 proven. 74 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 16:01:38,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:01:38,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770821159] [2024-11-18 16:01:38,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1770821159] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 16:01:38,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2132371372] [2024-11-18 16:01:38,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:01:38,518 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 16:01:38,518 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 16:01:38,520 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 16:01:38,520 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-18 16:01:38,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:01:38,641 INFO L255 TraceCheckSpWp]: Trace formula consists of 521 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-18 16:01:38,643 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 16:01:39,564 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 40 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 16:01:39,565 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 16:01:41,934 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 38 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 16:01:41,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2132371372] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 16:01:41,934 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 16:01:41,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 13] total 35 [2024-11-18 16:01:41,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650104316] [2024-11-18 16:01:41,935 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 16:01:41,935 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-11-18 16:01:41,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:01:41,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-11-18 16:01:41,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=1076, Unknown=0, NotChecked=0, Total=1190 [2024-11-18 16:01:41,936 INFO L87 Difference]: Start difference. First operand 5707 states and 7763 transitions. Second operand has 35 states, 35 states have (on average 9.228571428571428) internal successors, (323), 35 states have internal predecessors, (323), 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)