./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/pals_lcr.3.ufo.BOUNDED-6.pals+Problem12_label05.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c7c6ca5d 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.3.ufo.BOUNDED-6.pals+Problem12_label05.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 0ae5a79d1f1baf1f14454f65e56a4602af56e479a8b0432aa823cab3749bdff6 --- Real Ultimate output --- This is Ultimate 0.2.5-?-c7c6ca5-m [2024-11-08 16:55:10,150 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-08 16:55:10,209 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-08 16:55:10,213 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-08 16:55:10,214 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-08 16:55:10,231 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-08 16:55:10,232 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-08 16:55:10,232 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-08 16:55:10,232 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-08 16:55:10,233 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-08 16:55:10,233 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-08 16:55:10,233 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-08 16:55:10,233 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-08 16:55:10,234 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-08 16:55:10,234 INFO L153 SettingsManager]: * Use SBE=true [2024-11-08 16:55:10,234 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-08 16:55:10,235 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-08 16:55:10,235 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-08 16:55:10,235 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-08 16:55:10,235 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-08 16:55:10,236 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-08 16:55:10,236 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-08 16:55:10,239 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-08 16:55:10,240 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-08 16:55:10,241 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-08 16:55:10,241 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-08 16:55:10,241 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-08 16:55:10,241 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-08 16:55:10,242 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-08 16:55:10,242 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-08 16:55:10,242 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-08 16:55:10,242 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-08 16:55:10,242 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 16:55:10,243 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-08 16:55:10,243 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-08 16:55:10,243 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-08 16:55:10,244 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-08 16:55:10,244 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-08 16:55:10,244 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-08 16:55:10,244 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-08 16:55:10,245 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-08 16:55:10,245 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-08 16:55:10,245 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0ae5a79d1f1baf1f14454f65e56a4602af56e479a8b0432aa823cab3749bdff6 [2024-11-08 16:55:10,435 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-08 16:55:10,455 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-08 16:55:10,458 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-08 16:55:10,458 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-08 16:55:10,459 INFO L274 PluginConnector]: CDTParser initialized [2024-11-08 16:55:10,459 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/pals_lcr.3.ufo.BOUNDED-6.pals+Problem12_label05.c [2024-11-08 16:55:11,653 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-08 16:55:11,997 INFO L384 CDTParser]: Found 1 translation units. [2024-11-08 16:55:11,998 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.3.ufo.BOUNDED-6.pals+Problem12_label05.c [2024-11-08 16:55:12,025 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d91cf6722/d0109cc6ecb94778b3846dcdada71439/FLAGef509d7f2 [2024-11-08 16:55:12,211 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d91cf6722/d0109cc6ecb94778b3846dcdada71439 [2024-11-08 16:55:12,213 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-08 16:55:12,214 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-08 16:55:12,215 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-08 16:55:12,215 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-08 16:55:12,219 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-08 16:55:12,219 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 04:55:12" (1/1) ... [2024-11-08 16:55:12,221 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@69e7e1b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:55:12, skipping insertion in model container [2024-11-08 16:55:12,221 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 04:55:12" (1/1) ... [2024-11-08 16:55:12,291 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-08 16:55:12,509 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.3.ufo.BOUNDED-6.pals+Problem12_label05.c[6354,6367] [2024-11-08 16:55:12,552 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.3.ufo.BOUNDED-6.pals+Problem12_label05.c[13290,13303] [2024-11-08 16:55:12,997 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 16:55:13,009 INFO L200 MainTranslator]: Completed pre-run [2024-11-08 16:55:13,030 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.3.ufo.BOUNDED-6.pals+Problem12_label05.c[6354,6367] [2024-11-08 16:55:13,043 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.3.ufo.BOUNDED-6.pals+Problem12_label05.c[13290,13303] [2024-11-08 16:55:13,367 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 16:55:13,389 INFO L204 MainTranslator]: Completed translation [2024-11-08 16:55:13,389 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:55:13 WrapperNode [2024-11-08 16:55:13,390 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-08 16:55:13,391 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-08 16:55:13,391 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-08 16:55:13,391 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-08 16:55:13,396 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:55:13" (1/1) ... [2024-11-08 16:55:13,430 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:55:13" (1/1) ... [2024-11-08 16:55:13,654 INFO L138 Inliner]: procedures = 33, calls = 19, calls flagged for inlining = 14, calls inlined = 14, statements flattened = 4983 [2024-11-08 16:55:13,654 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-08 16:55:13,655 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-08 16:55:13,655 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-08 16:55:13,655 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-08 16:55:13,663 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:55:13" (1/1) ... [2024-11-08 16:55:13,664 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:55:13" (1/1) ... [2024-11-08 16:55:13,710 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:55:13" (1/1) ... [2024-11-08 16:55:13,886 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]. [2024-11-08 16:55:13,887 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:55:13" (1/1) ... [2024-11-08 16:55:13,887 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:55:13" (1/1) ... [2024-11-08 16:55:14,000 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:55:13" (1/1) ... [2024-11-08 16:55:14,023 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:55:13" (1/1) ... [2024-11-08 16:55:14,051 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:55:13" (1/1) ... [2024-11-08 16:55:14,069 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:55:13" (1/1) ... [2024-11-08 16:55:14,123 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-08 16:55:14,125 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-08 16:55:14,125 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-08 16:55:14,125 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-08 16:55:14,126 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:55:13" (1/1) ... [2024-11-08 16:55:14,130 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 16:55:14,138 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 16:55:14,149 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) [2024-11-08 16:55:14,151 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 [2024-11-08 16:55:14,186 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-08 16:55:14,187 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-08 16:55:14,187 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-08 16:55:14,187 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-08 16:55:14,257 INFO L238 CfgBuilder]: Building ICFG [2024-11-08 16:55:14,258 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-08 16:55:17,375 INFO L? ?]: Removed 732 outVars from TransFormulas that were not future-live. [2024-11-08 16:55:17,375 INFO L287 CfgBuilder]: Performing block encoding [2024-11-08 16:55:17,407 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-08 16:55:17,408 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-08 16:55:17,408 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 04:55:17 BoogieIcfgContainer [2024-11-08 16:55:17,408 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-08 16:55:17,410 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-08 16:55:17,410 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-08 16:55:17,412 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-08 16:55:17,413 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.11 04:55:12" (1/3) ... [2024-11-08 16:55:17,413 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b36f4c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 04:55:17, skipping insertion in model container [2024-11-08 16:55:17,414 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:55:13" (2/3) ... [2024-11-08 16:55:17,414 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b36f4c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 04:55:17, skipping insertion in model container [2024-11-08 16:55:17,414 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 04:55:17" (3/3) ... [2024-11-08 16:55:17,416 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.3.ufo.BOUNDED-6.pals+Problem12_label05.c [2024-11-08 16:55:17,430 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-08 16:55:17,430 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-08 16:55:17,494 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-08 16:55:17,498 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;@500578ef, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-08 16:55:17,498 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-08 16:55:17,505 INFO L276 IsEmpty]: Start isEmpty. Operand has 872 states, 869 states have (on average 1.906789413118527) internal successors, (1657), 871 states have internal predecessors, (1657), 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) [2024-11-08 16:55:17,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-08 16:55:17,511 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:55:17,511 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] [2024-11-08 16:55:17,512 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:55:17,515 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:55:17,515 INFO L85 PathProgramCache]: Analyzing trace with hash -1537187155, now seen corresponding path program 1 times [2024-11-08 16:55:17,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:55:17,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122125159] [2024-11-08 16:55:17,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:55:17,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:55:17,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:55:17,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:55:17,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:55:17,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2122125159] [2024-11-08 16:55:17,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2122125159] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:55:17,682 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:55:17,682 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 16:55:17,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545225885] [2024-11-08 16:55:17,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:55:17,686 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-08 16:55:17,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:55:17,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-08 16:55:17,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-08 16:55:17,708 INFO L87 Difference]: Start difference. First operand has 872 states, 869 states have (on average 1.906789413118527) internal successors, (1657), 871 states have internal predecessors, (1657), 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 10.0) internal successors, (20), 2 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:55:17,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:55:17,768 INFO L93 Difference]: Finished difference Result 1722 states and 3274 transitions. [2024-11-08 16:55:17,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-08 16:55:17,770 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 10.0) internal successors, (20), 2 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2024-11-08 16:55:17,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:55:17,783 INFO L225 Difference]: With dead ends: 1722 [2024-11-08 16:55:17,784 INFO L226 Difference]: Without dead ends: 806 [2024-11-08 16:55:17,787 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 [2024-11-08 16:55:17,789 INFO L432 NwaCegarLoop]: 1591 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, 1591 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 [2024-11-08 16:55:17,790 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1591 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 16:55:17,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 806 states. [2024-11-08 16:55:17,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 806 to 806. [2024-11-08 16:55:17,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 806 states, 804 states have (on average 1.8955223880597014) internal successors, (1524), 805 states have internal predecessors, (1524), 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) [2024-11-08 16:55:17,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 806 states to 806 states and 1524 transitions. [2024-11-08 16:55:17,846 INFO L78 Accepts]: Start accepts. Automaton has 806 states and 1524 transitions. Word has length 20 [2024-11-08 16:55:17,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:55:17,847 INFO L471 AbstractCegarLoop]: Abstraction has 806 states and 1524 transitions. [2024-11-08 16:55:17,847 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 10.0) internal successors, (20), 2 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:55:17,847 INFO L276 IsEmpty]: Start isEmpty. Operand 806 states and 1524 transitions. [2024-11-08 16:55:17,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-08 16:55:17,848 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:55:17,848 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] [2024-11-08 16:55:17,848 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-08 16:55:17,848 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:55:17,848 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:55:17,849 INFO L85 PathProgramCache]: Analyzing trace with hash 1746662891, now seen corresponding path program 1 times [2024-11-08 16:55:17,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:55:17,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223457097] [2024-11-08 16:55:17,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:55:17,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:55:17,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:55:18,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:55:18,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:55:18,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1223457097] [2024-11-08 16:55:18,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1223457097] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:55:18,001 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:55:18,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-08 16:55:18,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017554945] [2024-11-08 16:55:18,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:55:18,002 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 16:55:18,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:55:18,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 16:55:18,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-08 16:55:18,003 INFO L87 Difference]: Start difference. First operand 806 states and 1524 transitions. Second operand has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:55:18,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:55:18,084 INFO L93 Difference]: Finished difference Result 870 states and 1622 transitions. [2024-11-08 16:55:18,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 16:55:18,085 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2024-11-08 16:55:18,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:55:18,089 INFO L225 Difference]: With dead ends: 870 [2024-11-08 16:55:18,089 INFO L226 Difference]: Without dead ends: 836 [2024-11-08 16:55:18,090 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 [2024-11-08 16:55:18,091 INFO L432 NwaCegarLoop]: 1520 mSDtfsCounter, 46 mSDsluCounter, 4538 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 6058 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 16:55:18,091 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 6058 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 16:55:18,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 836 states. [2024-11-08 16:55:18,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 836 to 806. [2024-11-08 16:55:18,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 806 states, 804 states have (on average 1.8756218905472637) internal successors, (1508), 805 states have internal predecessors, (1508), 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) [2024-11-08 16:55:18,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 806 states to 806 states and 1508 transitions. [2024-11-08 16:55:18,112 INFO L78 Accepts]: Start accepts. Automaton has 806 states and 1508 transitions. Word has length 20 [2024-11-08 16:55:18,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:55:18,113 INFO L471 AbstractCegarLoop]: Abstraction has 806 states and 1508 transitions. [2024-11-08 16:55:18,113 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:55:18,113 INFO L276 IsEmpty]: Start isEmpty. Operand 806 states and 1508 transitions. [2024-11-08 16:55:18,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-11-08 16:55:18,115 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:55:18,115 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] [2024-11-08 16:55:18,115 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-08 16:55:18,116 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:55:18,117 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:55:18,117 INFO L85 PathProgramCache]: Analyzing trace with hash 623816355, now seen corresponding path program 1 times [2024-11-08 16:55:18,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:55:18,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666760452] [2024-11-08 16:55:18,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:55:18,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:55:18,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:55:18,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:55:18,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:55:18,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1666760452] [2024-11-08 16:55:18,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1666760452] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:55:18,225 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:55:18,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-08 16:55:18,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535267426] [2024-11-08 16:55:18,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:55:18,225 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 16:55:18,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:55:18,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 16:55:18,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-08 16:55:18,226 INFO L87 Difference]: Start difference. First operand 806 states and 1508 transitions. Second operand has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 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) [2024-11-08 16:55:18,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:55:18,326 INFO L93 Difference]: Finished difference Result 986 states and 1790 transitions. [2024-11-08 16:55:18,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-08 16:55:18,326 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 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 35 [2024-11-08 16:55:18,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:55:18,330 INFO L225 Difference]: With dead ends: 986 [2024-11-08 16:55:18,330 INFO L226 Difference]: Without dead ends: 956 [2024-11-08 16:55:18,330 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-08 16:55:18,331 INFO L432 NwaCegarLoop]: 1504 mSDtfsCounter, 4589 mSDsluCounter, 361 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4589 SdHoareTripleChecker+Valid, 1865 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 16:55:18,331 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4589 Valid, 1865 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 16:55:18,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 956 states. [2024-11-08 16:55:18,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 956 to 834. [2024-11-08 16:55:18,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 834 states, 832 states have (on average 1.8653846153846154) internal successors, (1552), 833 states have internal predecessors, (1552), 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) [2024-11-08 16:55:18,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 834 states to 834 states and 1552 transitions. [2024-11-08 16:55:18,346 INFO L78 Accepts]: Start accepts. Automaton has 834 states and 1552 transitions. Word has length 35 [2024-11-08 16:55:18,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:55:18,348 INFO L471 AbstractCegarLoop]: Abstraction has 834 states and 1552 transitions. [2024-11-08 16:55:18,348 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 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) [2024-11-08 16:55:18,349 INFO L276 IsEmpty]: Start isEmpty. Operand 834 states and 1552 transitions. [2024-11-08 16:55:18,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-08 16:55:18,349 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:55:18,349 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] [2024-11-08 16:55:18,349 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-08 16:55:18,350 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:55:18,350 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:55:18,350 INFO L85 PathProgramCache]: Analyzing trace with hash 1071361683, now seen corresponding path program 1 times [2024-11-08 16:55:18,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:55:18,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268616414] [2024-11-08 16:55:18,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:55:18,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:55:18,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:55:18,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:55:18,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:55:18,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268616414] [2024-11-08 16:55:18,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [268616414] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:55:18,402 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:55:18,402 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 16:55:18,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250620190] [2024-11-08 16:55:18,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:55:18,402 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 16:55:18,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:55:18,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 16:55:18,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 16:55:18,403 INFO L87 Difference]: Start difference. First operand 834 states and 1552 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 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) [2024-11-08 16:55:18,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:55:18,424 INFO L93 Difference]: Finished difference Result 939 states and 1715 transitions. [2024-11-08 16:55:18,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 16:55:18,424 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 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 37 [2024-11-08 16:55:18,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:55:18,427 INFO L225 Difference]: With dead ends: 939 [2024-11-08 16:55:18,427 INFO L226 Difference]: Without dead ends: 881 [2024-11-08 16:55:18,428 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 [2024-11-08 16:55:18,428 INFO L432 NwaCegarLoop]: 1506 mSDtfsCounter, 1466 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1466 SdHoareTripleChecker+Valid, 1548 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 [2024-11-08 16:55:18,429 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1466 Valid, 1548 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 16:55:18,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 881 states. [2024-11-08 16:55:18,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 881 to 879. [2024-11-08 16:55:18,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 879 states, 877 states have (on average 1.847206385404789) internal successors, (1620), 878 states have internal predecessors, (1620), 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) [2024-11-08 16:55:18,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 879 states to 879 states and 1620 transitions. [2024-11-08 16:55:18,441 INFO L78 Accepts]: Start accepts. Automaton has 879 states and 1620 transitions. Word has length 37 [2024-11-08 16:55:18,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:55:18,441 INFO L471 AbstractCegarLoop]: Abstraction has 879 states and 1620 transitions. [2024-11-08 16:55:18,441 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 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) [2024-11-08 16:55:18,441 INFO L276 IsEmpty]: Start isEmpty. Operand 879 states and 1620 transitions. [2024-11-08 16:55:18,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-08 16:55:18,442 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:55:18,442 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] [2024-11-08 16:55:18,442 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-08 16:55:18,442 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:55:18,443 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:55:18,443 INFO L85 PathProgramCache]: Analyzing trace with hash 1137855195, now seen corresponding path program 1 times [2024-11-08 16:55:18,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:55:18,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834198349] [2024-11-08 16:55:18,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:55:18,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:55:18,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:55:18,580 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:55:18,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:55:18,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [834198349] [2024-11-08 16:55:18,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [834198349] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:55:18,581 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:55:18,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-08 16:55:18,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161772585] [2024-11-08 16:55:18,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:55:18,581 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 16:55:18,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:55:18,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 16:55:18,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-08 16:55:18,582 INFO L87 Difference]: Start difference. First operand 879 states and 1620 transitions. Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 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) [2024-11-08 16:55:18,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:55:18,632 INFO L93 Difference]: Finished difference Result 984 states and 1780 transitions. [2024-11-08 16:55:18,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 16:55:18,632 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 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 37 [2024-11-08 16:55:18,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:55:18,635 INFO L225 Difference]: With dead ends: 984 [2024-11-08 16:55:18,635 INFO L226 Difference]: Without dead ends: 881 [2024-11-08 16:55:18,635 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-11-08 16:55:18,636 INFO L432 NwaCegarLoop]: 1503 mSDtfsCounter, 2946 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2946 SdHoareTripleChecker+Valid, 1589 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 16:55:18,636 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2946 Valid, 1589 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 16:55:18,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 881 states. [2024-11-08 16:55:18,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 881 to 879. [2024-11-08 16:55:18,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 879 states, 877 states have (on average 1.8449258836944127) internal successors, (1618), 878 states have internal predecessors, (1618), 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) [2024-11-08 16:55:18,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 879 states to 879 states and 1618 transitions. [2024-11-08 16:55:18,648 INFO L78 Accepts]: Start accepts. Automaton has 879 states and 1618 transitions. Word has length 37 [2024-11-08 16:55:18,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:55:18,648 INFO L471 AbstractCegarLoop]: Abstraction has 879 states and 1618 transitions. [2024-11-08 16:55:18,648 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 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) [2024-11-08 16:55:18,648 INFO L276 IsEmpty]: Start isEmpty. Operand 879 states and 1618 transitions. [2024-11-08 16:55:18,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-08 16:55:18,649 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:55:18,650 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] [2024-11-08 16:55:18,650 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-08 16:55:18,650 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:55:18,650 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:55:18,650 INFO L85 PathProgramCache]: Analyzing trace with hash 499049456, now seen corresponding path program 1 times [2024-11-08 16:55:18,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:55:18,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592283148] [2024-11-08 16:55:18,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:55:18,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:55:18,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:55:18,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:55:18,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:55:18,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592283148] [2024-11-08 16:55:18,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [592283148] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:55:18,765 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:55:18,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-08 16:55:18,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970544952] [2024-11-08 16:55:18,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:55:18,765 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 16:55:18,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:55:18,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 16:55:18,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-08 16:55:18,767 INFO L87 Difference]: Start difference. First operand 879 states and 1618 transitions. Second operand has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 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) [2024-11-08 16:55:18,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:55:18,799 INFO L93 Difference]: Finished difference Result 887 states and 1627 transitions. [2024-11-08 16:55:18,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 16:55:18,801 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 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 38 [2024-11-08 16:55:18,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:55:18,804 INFO L225 Difference]: With dead ends: 887 [2024-11-08 16:55:18,804 INFO L226 Difference]: Without dead ends: 885 [2024-11-08 16:55:18,805 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 [2024-11-08 16:55:18,805 INFO L432 NwaCegarLoop]: 1505 mSDtfsCounter, 0 mSDsluCounter, 4506 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 6011 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 [2024-11-08 16:55:18,807 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 6011 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 16:55:18,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 885 states. [2024-11-08 16:55:18,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 885 to 885. [2024-11-08 16:55:18,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 885 states, 883 states have (on average 1.838052095130238) internal successors, (1623), 884 states have internal predecessors, (1623), 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) [2024-11-08 16:55:18,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 885 states to 885 states and 1623 transitions. [2024-11-08 16:55:18,842 INFO L78 Accepts]: Start accepts. Automaton has 885 states and 1623 transitions. Word has length 38 [2024-11-08 16:55:18,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:55:18,842 INFO L471 AbstractCegarLoop]: Abstraction has 885 states and 1623 transitions. [2024-11-08 16:55:18,842 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 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) [2024-11-08 16:55:18,842 INFO L276 IsEmpty]: Start isEmpty. Operand 885 states and 1623 transitions. [2024-11-08 16:55:18,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-08 16:55:18,843 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:55:18,843 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] [2024-11-08 16:55:18,843 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-08 16:55:18,843 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:55:18,846 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:55:18,846 INFO L85 PathProgramCache]: Analyzing trace with hash 166228827, now seen corresponding path program 1 times [2024-11-08 16:55:18,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:55:18,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [186340621] [2024-11-08 16:55:18,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:55:18,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:55:18,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:55:18,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:55:18,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:55:18,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [186340621] [2024-11-08 16:55:18,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [186340621] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:55:18,882 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:55:18,882 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 16:55:18,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650514780] [2024-11-08 16:55:18,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:55:18,883 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 16:55:18,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:55:18,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 16:55:18,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 16:55:18,883 INFO L87 Difference]: Start difference. First operand 885 states and 1623 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:55:18,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:55:18,900 INFO L93 Difference]: Finished difference Result 1007 states and 1804 transitions. [2024-11-08 16:55:18,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 16:55:18,900 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2024-11-08 16:55:18,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:55:18,903 INFO L225 Difference]: With dead ends: 1007 [2024-11-08 16:55:18,903 INFO L226 Difference]: Without dead ends: 943 [2024-11-08 16:55:18,903 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 [2024-11-08 16:55:18,905 INFO L432 NwaCegarLoop]: 1540 mSDtfsCounter, 1476 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1476 SdHoareTripleChecker+Valid, 1588 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 [2024-11-08 16:55:18,905 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1476 Valid, 1588 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 16:55:18,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 943 states. [2024-11-08 16:55:18,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 943 to 941. [2024-11-08 16:55:18,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 941 states, 939 states have (on average 1.8146964856230032) internal successors, (1704), 940 states have internal predecessors, (1704), 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) [2024-11-08 16:55:18,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 941 states to 941 states and 1704 transitions. [2024-11-08 16:55:18,920 INFO L78 Accepts]: Start accepts. Automaton has 941 states and 1704 transitions. Word has length 39 [2024-11-08 16:55:18,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:55:18,921 INFO L471 AbstractCegarLoop]: Abstraction has 941 states and 1704 transitions. [2024-11-08 16:55:18,921 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:55:18,921 INFO L276 IsEmpty]: Start isEmpty. Operand 941 states and 1704 transitions. [2024-11-08 16:55:18,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-08 16:55:18,922 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:55:18,923 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] [2024-11-08 16:55:18,923 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-08 16:55:18,923 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:55:18,923 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:55:18,923 INFO L85 PathProgramCache]: Analyzing trace with hash -2049239973, now seen corresponding path program 1 times [2024-11-08 16:55:18,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:55:18,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695144898] [2024-11-08 16:55:18,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:55:18,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:55:18,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:55:18,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:55:18,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:55:18,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [695144898] [2024-11-08 16:55:18,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [695144898] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:55:18,957 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:55:18,957 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 16:55:18,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201483491] [2024-11-08 16:55:18,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:55:18,958 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 16:55:18,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:55:18,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 16:55:18,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 16:55:18,959 INFO L87 Difference]: Start difference. First operand 941 states and 1704 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:55:18,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:55:18,979 INFO L93 Difference]: Finished difference Result 1243 states and 2144 transitions. [2024-11-08 16:55:18,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 16:55:18,979 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2024-11-08 16:55:18,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:55:18,984 INFO L225 Difference]: With dead ends: 1243 [2024-11-08 16:55:18,984 INFO L226 Difference]: Without dead ends: 1080 [2024-11-08 16:55:18,984 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 [2024-11-08 16:55:18,985 INFO L432 NwaCegarLoop]: 1542 mSDtfsCounter, 1474 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1474 SdHoareTripleChecker+Valid, 1594 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 [2024-11-08 16:55:18,985 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1474 Valid, 1594 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 16:55:18,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1080 states. [2024-11-08 16:55:18,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1080 to 1078. [2024-11-08 16:55:18,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1078 states, 1076 states have (on average 1.762081784386617) internal successors, (1896), 1077 states have internal predecessors, (1896), 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) [2024-11-08 16:55:19,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1078 states to 1078 states and 1896 transitions. [2024-11-08 16:55:19,002 INFO L78 Accepts]: Start accepts. Automaton has 1078 states and 1896 transitions. Word has length 39 [2024-11-08 16:55:19,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:55:19,002 INFO L471 AbstractCegarLoop]: Abstraction has 1078 states and 1896 transitions. [2024-11-08 16:55:19,003 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:55:19,003 INFO L276 IsEmpty]: Start isEmpty. Operand 1078 states and 1896 transitions. [2024-11-08 16:55:19,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-08 16:55:19,003 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:55:19,003 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] [2024-11-08 16:55:19,003 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-08 16:55:19,003 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:55:19,003 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:55:19,004 INFO L85 PathProgramCache]: Analyzing trace with hash -268307109, now seen corresponding path program 1 times [2024-11-08 16:55:19,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:55:19,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554619516] [2024-11-08 16:55:19,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:55:19,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:55:19,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:55:19,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:55:19,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:55:19,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554619516] [2024-11-08 16:55:19,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1554619516] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:55:19,046 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:55:19,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 16:55:19,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886902505] [2024-11-08 16:55:19,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:55:19,046 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 16:55:19,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:55:19,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 16:55:19,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 16:55:19,047 INFO L87 Difference]: Start difference. First operand 1078 states and 1896 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:55:19,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:55:19,068 INFO L93 Difference]: Finished difference Result 1630 states and 2678 transitions. [2024-11-08 16:55:19,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 16:55:19,068 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2024-11-08 16:55:19,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:55:19,072 INFO L225 Difference]: With dead ends: 1630 [2024-11-08 16:55:19,072 INFO L226 Difference]: Without dead ends: 1330 [2024-11-08 16:55:19,073 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 [2024-11-08 16:55:19,074 INFO L432 NwaCegarLoop]: 1540 mSDtfsCounter, 1472 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1472 SdHoareTripleChecker+Valid, 1596 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 [2024-11-08 16:55:19,074 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1472 Valid, 1596 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 16:55:19,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1330 states. [2024-11-08 16:55:19,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1330 to 1328. [2024-11-08 16:55:19,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1328 states, 1326 states have (on average 1.6832579185520362) internal successors, (2232), 1327 states have internal predecessors, (2232), 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) [2024-11-08 16:55:19,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1328 states to 1328 states and 2232 transitions. [2024-11-08 16:55:19,092 INFO L78 Accepts]: Start accepts. Automaton has 1328 states and 2232 transitions. Word has length 39 [2024-11-08 16:55:19,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:55:19,092 INFO L471 AbstractCegarLoop]: Abstraction has 1328 states and 2232 transitions. [2024-11-08 16:55:19,092 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:55:19,092 INFO L276 IsEmpty]: Start isEmpty. Operand 1328 states and 2232 transitions. [2024-11-08 16:55:19,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-11-08 16:55:19,093 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:55:19,093 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] [2024-11-08 16:55:19,093 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-08 16:55:19,093 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:55:19,093 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:55:19,093 INFO L85 PathProgramCache]: Analyzing trace with hash 1567417933, now seen corresponding path program 1 times [2024-11-08 16:55:19,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:55:19,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647291105] [2024-11-08 16:55:19,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:55:19,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:55:19,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:55:19,172 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-08 16:55:19,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:55:19,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647291105] [2024-11-08 16:55:19,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [647291105] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:55:19,172 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:55:19,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-08 16:55:19,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170036699] [2024-11-08 16:55:19,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:55:19,173 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 16:55:19,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:55:19,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 16:55:19,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-08 16:55:19,173 INFO L87 Difference]: Start difference. First operand 1328 states and 2232 transitions. Second operand has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 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) [2024-11-08 16:55:19,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:55:19,248 INFO L93 Difference]: Finished difference Result 2960 states and 4508 transitions. [2024-11-08 16:55:19,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 16:55:19,249 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 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 54 [2024-11-08 16:55:19,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:55:19,255 INFO L225 Difference]: With dead ends: 2960 [2024-11-08 16:55:19,255 INFO L226 Difference]: Without dead ends: 2558 [2024-11-08 16:55:19,256 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-08 16:55:19,257 INFO L432 NwaCegarLoop]: 1548 mSDtfsCounter, 3037 mSDsluCounter, 1624 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3037 SdHoareTripleChecker+Valid, 3172 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 16:55:19,257 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3037 Valid, 3172 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 16:55:19,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2558 states. [2024-11-08 16:55:19,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2558 to 1804. [2024-11-08 16:55:19,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1804 states, 1802 states have (on average 1.602663706992231) internal successors, (2888), 1803 states have internal predecessors, (2888), 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) [2024-11-08 16:55:19,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1804 states to 1804 states and 2888 transitions. [2024-11-08 16:55:19,286 INFO L78 Accepts]: Start accepts. Automaton has 1804 states and 2888 transitions. Word has length 54 [2024-11-08 16:55:19,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:55:19,286 INFO L471 AbstractCegarLoop]: Abstraction has 1804 states and 2888 transitions. [2024-11-08 16:55:19,286 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 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) [2024-11-08 16:55:19,286 INFO L276 IsEmpty]: Start isEmpty. Operand 1804 states and 2888 transitions. [2024-11-08 16:55:19,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-11-08 16:55:19,287 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:55:19,287 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] [2024-11-08 16:55:19,287 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-08 16:55:19,287 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:55:19,288 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:55:19,288 INFO L85 PathProgramCache]: Analyzing trace with hash -648050867, now seen corresponding path program 1 times [2024-11-08 16:55:19,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:55:19,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130482361] [2024-11-08 16:55:19,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:55:19,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:55:19,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:55:19,366 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-08 16:55:19,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:55:19,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2130482361] [2024-11-08 16:55:19,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2130482361] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:55:19,366 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:55:19,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-08 16:55:19,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540420189] [2024-11-08 16:55:19,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:55:19,367 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 16:55:19,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:55:19,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 16:55:19,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-08 16:55:19,367 INFO L87 Difference]: Start difference. First operand 1804 states and 2888 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 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) [2024-11-08 16:55:19,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:55:19,437 INFO L93 Difference]: Finished difference Result 3508 states and 5268 transitions. [2024-11-08 16:55:19,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 16:55:19,437 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 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 54 [2024-11-08 16:55:19,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:55:19,444 INFO L225 Difference]: With dead ends: 3508 [2024-11-08 16:55:19,444 INFO L226 Difference]: Without dead ends: 2958 [2024-11-08 16:55:19,446 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-08 16:55:19,446 INFO L432 NwaCegarLoop]: 1547 mSDtfsCounter, 3041 mSDsluCounter, 1600 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3041 SdHoareTripleChecker+Valid, 3147 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 16:55:19,446 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3041 Valid, 3147 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 16:55:19,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2958 states. [2024-11-08 16:55:19,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2958 to 2552. [2024-11-08 16:55:19,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2552 states, 2550 states have (on average 1.5356862745098039) internal successors, (3916), 2551 states have internal predecessors, (3916), 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) [2024-11-08 16:55:19,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2552 states to 2552 states and 3916 transitions. [2024-11-08 16:55:19,489 INFO L78 Accepts]: Start accepts. Automaton has 2552 states and 3916 transitions. Word has length 54 [2024-11-08 16:55:19,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:55:19,489 INFO L471 AbstractCegarLoop]: Abstraction has 2552 states and 3916 transitions. [2024-11-08 16:55:19,489 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 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) [2024-11-08 16:55:19,489 INFO L276 IsEmpty]: Start isEmpty. Operand 2552 states and 3916 transitions. [2024-11-08 16:55:19,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-11-08 16:55:19,490 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:55:19,490 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] [2024-11-08 16:55:19,490 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-08 16:55:19,490 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:55:19,490 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:55:19,490 INFO L85 PathProgramCache]: Analyzing trace with hash 1132881997, now seen corresponding path program 1 times [2024-11-08 16:55:19,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:55:19,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012281196] [2024-11-08 16:55:19,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:55:19,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:55:19,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:55:19,554 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-08 16:55:19,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:55:19,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012281196] [2024-11-08 16:55:19,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1012281196] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:55:19,554 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:55:19,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-08 16:55:19,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589561070] [2024-11-08 16:55:19,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:55:19,555 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 16:55:19,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:55:19,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 16:55:19,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-08 16:55:19,555 INFO L87 Difference]: Start difference. First operand 2552 states and 3916 transitions. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:55:19,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:55:19,631 INFO L93 Difference]: Finished difference Result 4056 states and 6024 transitions. [2024-11-08 16:55:19,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 16:55:19,632 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2024-11-08 16:55:19,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:55:19,640 INFO L225 Difference]: With dead ends: 4056 [2024-11-08 16:55:19,640 INFO L226 Difference]: Without dead ends: 3506 [2024-11-08 16:55:19,642 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-08 16:55:19,642 INFO L432 NwaCegarLoop]: 1546 mSDtfsCounter, 3047 mSDsluCounter, 1607 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3047 SdHoareTripleChecker+Valid, 3153 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 16:55:19,642 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3047 Valid, 3153 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 16:55:19,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3506 states. [2024-11-08 16:55:19,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3506 to 3100. [2024-11-08 16:55:19,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3100 states, 3098 states have (on average 1.5080697224015494) internal successors, (4672), 3099 states have internal predecessors, (4672), 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) [2024-11-08 16:55:19,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3100 states to 3100 states and 4672 transitions. [2024-11-08 16:55:19,738 INFO L78 Accepts]: Start accepts. Automaton has 3100 states and 4672 transitions. Word has length 54 [2024-11-08 16:55:19,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:55:19,738 INFO L471 AbstractCegarLoop]: Abstraction has 3100 states and 4672 transitions. [2024-11-08 16:55:19,738 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:55:19,738 INFO L276 IsEmpty]: Start isEmpty. Operand 3100 states and 4672 transitions. [2024-11-08 16:55:19,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-11-08 16:55:19,738 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:55:19,739 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] [2024-11-08 16:55:19,739 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-08 16:55:19,739 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:55:19,739 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:55:19,739 INFO L85 PathProgramCache]: Analyzing trace with hash 1336470191, now seen corresponding path program 1 times [2024-11-08 16:55:19,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:55:19,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523814850] [2024-11-08 16:55:19,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:55:19,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:55:19,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:55:19,797 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:55:19,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:55:19,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523814850] [2024-11-08 16:55:19,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [523814850] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:55:19,797 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:55:19,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 16:55:19,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403324337] [2024-11-08 16:55:19,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:55:19,798 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 16:55:19,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:55:19,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 16:55:19,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 16:55:19,798 INFO L87 Difference]: Start difference. First operand 3100 states and 4672 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:55:19,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:55:19,837 INFO L93 Difference]: Finished difference Result 5424 states and 7882 transitions. [2024-11-08 16:55:19,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 16:55:19,838 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2024-11-08 16:55:19,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:55:19,846 INFO L225 Difference]: With dead ends: 5424 [2024-11-08 16:55:19,846 INFO L226 Difference]: Without dead ends: 3102 [2024-11-08 16:55:19,848 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 [2024-11-08 16:55:19,849 INFO L432 NwaCegarLoop]: 1526 mSDtfsCounter, 29 mSDsluCounter, 1496 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 3022 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 [2024-11-08 16:55:19,849 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 3022 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 16:55:19,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3102 states. [2024-11-08 16:55:19,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3102 to 3100. [2024-11-08 16:55:19,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3100 states, 3098 states have (on average 1.4919302775984506) internal successors, (4622), 3099 states have internal predecessors, (4622), 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) [2024-11-08 16:55:19,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3100 states to 3100 states and 4622 transitions. [2024-11-08 16:55:19,900 INFO L78 Accepts]: Start accepts. Automaton has 3100 states and 4622 transitions. Word has length 55 [2024-11-08 16:55:19,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:55:19,900 INFO L471 AbstractCegarLoop]: Abstraction has 3100 states and 4622 transitions. [2024-11-08 16:55:19,900 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:55:19,901 INFO L276 IsEmpty]: Start isEmpty. Operand 3100 states and 4622 transitions. [2024-11-08 16:55:19,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-08 16:55:19,901 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:55:19,901 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] [2024-11-08 16:55:19,901 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-08 16:55:19,902 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:55:19,902 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:55:19,902 INFO L85 PathProgramCache]: Analyzing trace with hash -1355833083, now seen corresponding path program 1 times [2024-11-08 16:55:19,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:55:19,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313571453] [2024-11-08 16:55:19,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:55:19,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:55:19,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:55:19,967 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:55:19,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:55:19,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313571453] [2024-11-08 16:55:19,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1313571453] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:55:19,968 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:55:19,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 16:55:19,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910716979] [2024-11-08 16:55:19,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:55:19,969 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 16:55:19,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:55:19,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 16:55:19,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 16:55:19,969 INFO L87 Difference]: Start difference. First operand 3100 states and 4622 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 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) [2024-11-08 16:55:19,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:55:19,998 INFO L93 Difference]: Finished difference Result 4019 states and 5882 transitions. [2024-11-08 16:55:19,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 16:55:19,998 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 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 56 [2024-11-08 16:55:19,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:55:20,002 INFO L225 Difference]: With dead ends: 4019 [2024-11-08 16:55:20,003 INFO L226 Difference]: Without dead ends: 1697 [2024-11-08 16:55:20,005 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 [2024-11-08 16:55:20,005 INFO L432 NwaCegarLoop]: 1524 mSDtfsCounter, 23 mSDsluCounter, 1495 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 3019 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 [2024-11-08 16:55:20,005 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 3019 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 16:55:20,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1697 states. [2024-11-08 16:55:20,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1697 to 1689. [2024-11-08 16:55:20,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1689 states, 1687 states have (on average 1.5986959098992295) internal successors, (2697), 1688 states have internal predecessors, (2697), 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) [2024-11-08 16:55:20,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1689 states to 1689 states and 2697 transitions. [2024-11-08 16:55:20,032 INFO L78 Accepts]: Start accepts. Automaton has 1689 states and 2697 transitions. Word has length 56 [2024-11-08 16:55:20,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:55:20,032 INFO L471 AbstractCegarLoop]: Abstraction has 1689 states and 2697 transitions. [2024-11-08 16:55:20,033 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 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) [2024-11-08 16:55:20,033 INFO L276 IsEmpty]: Start isEmpty. Operand 1689 states and 2697 transitions. [2024-11-08 16:55:20,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-11-08 16:55:20,033 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:55:20,034 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] [2024-11-08 16:55:20,034 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-08 16:55:20,034 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:55:20,035 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:55:20,035 INFO L85 PathProgramCache]: Analyzing trace with hash -1597882527, now seen corresponding path program 1 times [2024-11-08 16:55:20,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:55:20,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947832938] [2024-11-08 16:55:20,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:55:20,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:55:20,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:55:20,097 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:55:20,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:55:20,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1947832938] [2024-11-08 16:55:20,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1947832938] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:55:20,098 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:55:20,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 16:55:20,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294652701] [2024-11-08 16:55:20,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:55:20,098 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 16:55:20,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:55:20,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 16:55:20,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 16:55:20,099 INFO L87 Difference]: Start difference. First operand 1689 states and 2697 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:55:20,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:55:20,120 INFO L93 Difference]: Finished difference Result 2143 states and 3311 transitions. [2024-11-08 16:55:20,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 16:55:20,120 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2024-11-08 16:55:20,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:55:20,129 INFO L225 Difference]: With dead ends: 2143 [2024-11-08 16:55:20,129 INFO L226 Difference]: Without dead ends: 1241 [2024-11-08 16:55:20,130 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 [2024-11-08 16:55:20,130 INFO L432 NwaCegarLoop]: 1518 mSDtfsCounter, 25 mSDsluCounter, 1480 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 2998 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 [2024-11-08 16:55:20,131 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 2998 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 16:55:20,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1241 states. [2024-11-08 16:55:20,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1241 to 1239. [2024-11-08 16:55:20,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1239 states, 1237 states have (on average 1.6782538399353275) internal successors, (2076), 1238 states have internal predecessors, (2076), 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) [2024-11-08 16:55:20,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1239 states to 1239 states and 2076 transitions. [2024-11-08 16:55:20,153 INFO L78 Accepts]: Start accepts. Automaton has 1239 states and 2076 transitions. Word has length 57 [2024-11-08 16:55:20,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:55:20,153 INFO L471 AbstractCegarLoop]: Abstraction has 1239 states and 2076 transitions. [2024-11-08 16:55:20,157 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:55:20,157 INFO L276 IsEmpty]: Start isEmpty. Operand 1239 states and 2076 transitions. [2024-11-08 16:55:20,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-11-08 16:55:20,158 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:55:20,158 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] [2024-11-08 16:55:20,158 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-08 16:55:20,158 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:55:20,159 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:55:20,159 INFO L85 PathProgramCache]: Analyzing trace with hash -1649038701, now seen corresponding path program 1 times [2024-11-08 16:55:20,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:55:20,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062554489] [2024-11-08 16:55:20,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:55:20,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:55:20,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:55:20,249 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-08 16:55:20,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:55:20,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062554489] [2024-11-08 16:55:20,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2062554489] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:55:20,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1840982786] [2024-11-08 16:55:20,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:55:20,250 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:55:20,250 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 16:55:20,253 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) [2024-11-08 16:55:20,254 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-08 16:55:20,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:55:20,344 INFO L255 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-08 16:55:20,349 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:55:20,446 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-08 16:55:20,446 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:55:20,674 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-08 16:55:20,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1840982786] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:55:20,674 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:55:20,674 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 4] total 10 [2024-11-08 16:55:20,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908446983] [2024-11-08 16:55:20,674 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:55:20,675 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-08 16:55:20,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:55:20,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-08 16:55:20,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2024-11-08 16:55:20,675 INFO L87 Difference]: Start difference. First operand 1239 states and 2076 transitions. Second operand has 10 states, 10 states have (on average 15.6) internal successors, (156), 10 states have internal predecessors, (156), 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) [2024-11-08 16:55:20,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:55:20,749 INFO L93 Difference]: Finished difference Result 2301 states and 3470 transitions. [2024-11-08 16:55:20,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-08 16:55:20,749 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 15.6) internal successors, (156), 10 states have internal predecessors, (156), 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 59 [2024-11-08 16:55:20,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:55:20,753 INFO L225 Difference]: With dead ends: 2301 [2024-11-08 16:55:20,753 INFO L226 Difference]: Without dead ends: 1849 [2024-11-08 16:55:20,754 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2024-11-08 16:55:20,754 INFO L432 NwaCegarLoop]: 1516 mSDtfsCounter, 2938 mSDsluCounter, 4598 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2938 SdHoareTripleChecker+Valid, 6114 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 16:55:20,754 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2938 Valid, 6114 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 16:55:20,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1849 states. [2024-11-08 16:55:20,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1849 to 1794. [2024-11-08 16:55:20,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1794 states, 1792 states have (on average 1.5385044642857142) internal successors, (2757), 1793 states have internal predecessors, (2757), 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) [2024-11-08 16:55:20,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1794 states to 1794 states and 2757 transitions. [2024-11-08 16:55:20,831 INFO L78 Accepts]: Start accepts. Automaton has 1794 states and 2757 transitions. Word has length 59 [2024-11-08 16:55:20,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:55:20,832 INFO L471 AbstractCegarLoop]: Abstraction has 1794 states and 2757 transitions. [2024-11-08 16:55:20,832 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 15.6) internal successors, (156), 10 states have internal predecessors, (156), 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) [2024-11-08 16:55:20,832 INFO L276 IsEmpty]: Start isEmpty. Operand 1794 states and 2757 transitions. [2024-11-08 16:55:20,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-11-08 16:55:20,833 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:55:20,833 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] [2024-11-08 16:55:20,847 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-08 16:55:21,033 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-08 16:55:21,034 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:55:21,034 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:55:21,034 INFO L85 PathProgramCache]: Analyzing trace with hash 1651307681, now seen corresponding path program 1 times [2024-11-08 16:55:21,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:55:21,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588234742] [2024-11-08 16:55:21,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:55:21,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:55:21,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:55:21,974 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:55:21,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:55:21,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [588234742] [2024-11-08 16:55:21,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [588234742] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:55:21,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1392957970] [2024-11-08 16:55:21,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:55:21,975 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:55:21,975 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 16:55:21,977 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) [2024-11-08 16:55:21,978 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-08 16:55:22,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:55:22,057 INFO L255 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-08 16:55:22,058 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:55:22,357 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:55:22,357 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:55:22,883 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:55:22,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1392957970] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:55:22,883 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:55:22,883 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 9] total 26 [2024-11-08 16:55:22,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540179305] [2024-11-08 16:55:22,883 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:55:22,884 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-08 16:55:22,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:55:22,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-08 16:55:22,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=587, Unknown=0, NotChecked=0, Total=702 [2024-11-08 16:55:22,885 INFO L87 Difference]: Start difference. First operand 1794 states and 2757 transitions. Second operand has 27 states, 27 states have (on average 5.407407407407407) internal successors, (146), 26 states have internal predecessors, (146), 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) [2024-11-08 16:55:23,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:55:23,289 INFO L93 Difference]: Finished difference Result 3734 states and 5250 transitions. [2024-11-08 16:55:23,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-08 16:55:23,289 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 5.407407407407407) internal successors, (146), 26 states have internal predecessors, (146), 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 60 [2024-11-08 16:55:23,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:55:23,294 INFO L225 Difference]: With dead ends: 3734 [2024-11-08 16:55:23,294 INFO L226 Difference]: Without dead ends: 2825 [2024-11-08 16:55:23,295 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 262 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=319, Invalid=1087, Unknown=0, NotChecked=0, Total=1406 [2024-11-08 16:55:23,296 INFO L432 NwaCegarLoop]: 1491 mSDtfsCounter, 13662 mSDsluCounter, 4681 mSDsCounter, 0 mSdLazyCounter, 338 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13662 SdHoareTripleChecker+Valid, 6172 SdHoareTripleChecker+Invalid, 353 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 338 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-08 16:55:23,296 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13662 Valid, 6172 Invalid, 353 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 338 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-08 16:55:23,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2825 states. [2024-11-08 16:55:23,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2825 to 2787. [2024-11-08 16:55:23,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2787 states, 2785 states have (on average 1.4308797127468582) internal successors, (3985), 2786 states have internal predecessors, (3985), 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) [2024-11-08 16:55:23,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2787 states to 2787 states and 3985 transitions. [2024-11-08 16:55:23,342 INFO L78 Accepts]: Start accepts. Automaton has 2787 states and 3985 transitions. Word has length 60 [2024-11-08 16:55:23,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:55:23,343 INFO L471 AbstractCegarLoop]: Abstraction has 2787 states and 3985 transitions. [2024-11-08 16:55:23,343 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 5.407407407407407) internal successors, (146), 26 states have internal predecessors, (146), 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) [2024-11-08 16:55:23,343 INFO L276 IsEmpty]: Start isEmpty. Operand 2787 states and 3985 transitions. [2024-11-08 16:55:23,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-11-08 16:55:23,343 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:55:23,344 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-08 16:55:23,357 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-08 16:55:23,547 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,SelfDestructingSolverStorable16 [2024-11-08 16:55:23,548 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:55:23,548 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:55:23,548 INFO L85 PathProgramCache]: Analyzing trace with hash -1955522029, now seen corresponding path program 1 times [2024-11-08 16:55:23,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:55:23,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043102717] [2024-11-08 16:55:23,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:55:23,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:55:23,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:55:23,859 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:55:23,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:55:23,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1043102717] [2024-11-08 16:55:23,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1043102717] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:55:23,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2016383386] [2024-11-08 16:55:23,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:55:23,860 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:55:23,860 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 16:55:23,862 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) [2024-11-08 16:55:23,863 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-08 16:55:23,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:55:23,964 INFO L255 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-08 16:55:23,966 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:55:25,115 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:55:25,116 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:55:26,235 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:55:26,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2016383386] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:55:26,236 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:55:26,236 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 16, 15] total 37 [2024-11-08 16:55:26,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861756373] [2024-11-08 16:55:26,236 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:55:26,236 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2024-11-08 16:55:26,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:55:26,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2024-11-08 16:55:26,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=1183, Unknown=0, NotChecked=0, Total=1332 [2024-11-08 16:55:26,237 INFO L87 Difference]: Start difference. First operand 2787 states and 3985 transitions. Second operand has 37 states, 37 states have (on average 4.27027027027027) internal successors, (158), 37 states have internal predecessors, (158), 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) [2024-11-08 16:55:41,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:55:41,921 INFO L93 Difference]: Finished difference Result 12128 states and 15862 transitions. [2024-11-08 16:55:41,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 143 states. [2024-11-08 16:55:41,922 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 4.27027027027027) internal successors, (158), 37 states have internal predecessors, (158), 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 60 [2024-11-08 16:55:41,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:55:41,934 INFO L225 Difference]: With dead ends: 12128 [2024-11-08 16:55:41,934 INFO L226 Difference]: Without dead ends: 10280 [2024-11-08 16:55:41,942 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 269 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 176 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12082 ImplicationChecksByTransitivity, 14.9s TimeCoverageRelationStatistics Valid=5773, Invalid=25733, Unknown=0, NotChecked=0, Total=31506 [2024-11-08 16:55:41,943 INFO L432 NwaCegarLoop]: 1547 mSDtfsCounter, 15774 mSDsluCounter, 19310 mSDsCounter, 0 mSdLazyCounter, 1969 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15774 SdHoareTripleChecker+Valid, 20857 SdHoareTripleChecker+Invalid, 2048 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 1969 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-08 16:55:41,943 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [15774 Valid, 20857 Invalid, 2048 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 1969 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-08 16:55:41,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10280 states. [2024-11-08 16:55:42,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10280 to 7524. [2024-11-08 16:55:42,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7524 states, 7522 states have (on average 1.3150757777186919) internal successors, (9892), 7523 states have internal predecessors, (9892), 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) [2024-11-08 16:55:42,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7524 states to 7524 states and 9892 transitions. [2024-11-08 16:55:42,127 INFO L78 Accepts]: Start accepts. Automaton has 7524 states and 9892 transitions. Word has length 60 [2024-11-08 16:55:42,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:55:42,128 INFO L471 AbstractCegarLoop]: Abstraction has 7524 states and 9892 transitions. [2024-11-08 16:55:42,128 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 4.27027027027027) internal successors, (158), 37 states have internal predecessors, (158), 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) [2024-11-08 16:55:42,128 INFO L276 IsEmpty]: Start isEmpty. Operand 7524 states and 9892 transitions. [2024-11-08 16:55:42,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-11-08 16:55:42,129 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:55:42,129 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] [2024-11-08 16:55:42,141 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-08 16:55:42,332 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-08 16:55:42,333 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:55:42,333 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:55:42,334 INFO L85 PathProgramCache]: Analyzing trace with hash -866926907, now seen corresponding path program 1 times [2024-11-08 16:55:42,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:55:42,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52615450] [2024-11-08 16:55:42,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:55:42,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:55:42,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:55:42,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:55:42,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:55:42,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52615450] [2024-11-08 16:55:42,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [52615450] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:55:42,433 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:55:42,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 16:55:42,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377780450] [2024-11-08 16:55:42,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:55:42,434 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 16:55:42,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:55:42,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 16:55:42,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 16:55:42,435 INFO L87 Difference]: Start difference. First operand 7524 states and 9892 transitions. Second operand has 4 states, 4 states have (on average 15.0) internal successors, (60), 3 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) [2024-11-08 16:55:46,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:55:46,534 INFO L93 Difference]: Finished difference Result 9779 states and 14201 transitions. [2024-11-08 16:55:46,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 16:55:46,535 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 3 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 60 [2024-11-08 16:55:46,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:55:46,546 INFO L225 Difference]: With dead ends: 9779 [2024-11-08 16:55:46,546 INFO L226 Difference]: Without dead ends: 9026 [2024-11-08 16:55:46,548 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-08 16:55:46,548 INFO L432 NwaCegarLoop]: 762 mSDtfsCounter, 2337 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 5154 mSolverCounterSat, 1245 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2337 SdHoareTripleChecker+Valid, 780 SdHoareTripleChecker+Invalid, 6399 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1245 IncrementalHoareTripleChecker+Valid, 5154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2024-11-08 16:55:46,548 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2337 Valid, 780 Invalid, 6399 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1245 Valid, 5154 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2024-11-08 16:55:46,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9026 states. [2024-11-08 16:55:46,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9026 to 9026. [2024-11-08 16:55:46,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9026 states, 9024 states have (on average 1.315159574468085) internal successors, (11868), 9025 states have internal predecessors, (11868), 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) [2024-11-08 16:55:46,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9026 states to 9026 states and 11868 transitions. [2024-11-08 16:55:46,735 INFO L78 Accepts]: Start accepts. Automaton has 9026 states and 11868 transitions. Word has length 60 [2024-11-08 16:55:46,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:55:46,736 INFO L471 AbstractCegarLoop]: Abstraction has 9026 states and 11868 transitions. [2024-11-08 16:55:46,736 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 3 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) [2024-11-08 16:55:46,736 INFO L276 IsEmpty]: Start isEmpty. Operand 9026 states and 11868 transitions. [2024-11-08 16:55:46,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-11-08 16:55:46,737 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:55:46,737 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] [2024-11-08 16:55:46,737 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-08 16:55:46,738 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:55:46,738 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:55:46,738 INFO L85 PathProgramCache]: Analyzing trace with hash -909285249, now seen corresponding path program 1 times [2024-11-08 16:55:46,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:55:46,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807342496] [2024-11-08 16:55:46,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:55:46,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:55:46,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:55:47,006 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:55:47,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:55:47,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1807342496] [2024-11-08 16:55:47,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1807342496] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:55:47,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1999013674] [2024-11-08 16:55:47,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:55:47,008 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:55:47,008 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 16:55:47,009 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) [2024-11-08 16:55:47,010 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-08 16:55:47,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:55:47,088 INFO L255 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-08 16:55:47,090 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:55:47,331 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:55:47,331 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:55:47,676 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:55:47,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1999013674] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:55:47,676 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:55:47,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 21 [2024-11-08 16:55:47,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947582733] [2024-11-08 16:55:47,676 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:55:47,678 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-08 16:55:47,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:55:47,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-08 16:55:47,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=372, Unknown=0, NotChecked=0, Total=462 [2024-11-08 16:55:47,679 INFO L87 Difference]: Start difference. First operand 9026 states and 11868 transitions. Second operand has 22 states, 22 states have (on average 6.2727272727272725) internal successors, (138), 21 states have internal predecessors, (138), 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) [2024-11-08 16:55:48,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:55:48,079 INFO L93 Difference]: Finished difference Result 16564 states and 21362 transitions. [2024-11-08 16:55:48,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-08 16:55:48,080 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 6.2727272727272725) internal successors, (138), 21 states have internal predecessors, (138), 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 61 [2024-11-08 16:55:48,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:55:48,094 INFO L225 Difference]: With dead ends: 16564 [2024-11-08 16:55:48,094 INFO L226 Difference]: Without dead ends: 10422 [2024-11-08 16:55:48,101 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 179 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=253, Invalid=803, Unknown=0, NotChecked=0, Total=1056 [2024-11-08 16:55:48,101 INFO L432 NwaCegarLoop]: 1497 mSDtfsCounter, 15045 mSDsluCounter, 3169 mSDsCounter, 0 mSdLazyCounter, 302 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15045 SdHoareTripleChecker+Valid, 4666 SdHoareTripleChecker+Invalid, 316 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 302 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 16:55:48,101 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [15045 Valid, 4666 Invalid, 316 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 302 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 16:55:48,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10422 states. [2024-11-08 16:55:48,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10422 to 10374. [2024-11-08 16:55:48,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10374 states, 10372 states have (on average 1.298785190898573) internal successors, (13471), 10373 states have internal predecessors, (13471), 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) [2024-11-08 16:55:48,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10374 states to 10374 states and 13471 transitions. [2024-11-08 16:55:48,320 INFO L78 Accepts]: Start accepts. Automaton has 10374 states and 13471 transitions. Word has length 61 [2024-11-08 16:55:48,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:55:48,320 INFO L471 AbstractCegarLoop]: Abstraction has 10374 states and 13471 transitions. [2024-11-08 16:55:48,320 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 6.2727272727272725) internal successors, (138), 21 states have internal predecessors, (138), 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) [2024-11-08 16:55:48,320 INFO L276 IsEmpty]: Start isEmpty. Operand 10374 states and 13471 transitions. [2024-11-08 16:55:48,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-08 16:55:48,321 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:55:48,321 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] [2024-11-08 16:55:48,334 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-08 16:55:48,521 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:55:48,522 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:55:48,522 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:55:48,522 INFO L85 PathProgramCache]: Analyzing trace with hash 705601745, now seen corresponding path program 1 times [2024-11-08 16:55:48,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:55:48,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824495215] [2024-11-08 16:55:48,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:55:48,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:55:48,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:55:49,431 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:55:49,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:55:49,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824495215] [2024-11-08 16:55:49,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [824495215] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:55:49,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [75920095] [2024-11-08 16:55:49,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:55:49,432 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:55:49,432 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 16:55:49,433 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) [2024-11-08 16:55:49,434 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-08 16:55:49,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:55:49,506 INFO L255 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-08 16:55:49,507 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:55:49,917 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:55:49,917 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:55:50,830 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:55:50,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [75920095] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:55:50,831 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:55:50,831 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 12, 12] total 41 [2024-11-08 16:55:50,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052334937] [2024-11-08 16:55:50,831 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:55:50,832 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2024-11-08 16:55:50,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:55:50,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2024-11-08 16:55:50,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=1514, Unknown=0, NotChecked=0, Total=1640 [2024-11-08 16:55:50,833 INFO L87 Difference]: Start difference. First operand 10374 states and 13471 transitions. Second operand has 41 states, 41 states have (on average 3.8048780487804876) internal successors, (156), 41 states have internal predecessors, (156), 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) [2024-11-08 16:55:57,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:55:57,283 INFO L93 Difference]: Finished difference Result 14304 states and 18394 transitions. [2024-11-08 16:55:57,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2024-11-08 16:55:57,284 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 3.8048780487804876) internal successors, (156), 41 states have internal predecessors, (156), 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 62 [2024-11-08 16:55:57,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:55:57,292 INFO L225 Difference]: With dead ends: 14304 [2024-11-08 16:55:57,292 INFO L226 Difference]: Without dead ends: 10518 [2024-11-08 16:55:57,298 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2486 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=2423, Invalid=8919, Unknown=0, NotChecked=0, Total=11342 [2024-11-08 16:55:57,298 INFO L432 NwaCegarLoop]: 1571 mSDtfsCounter, 18981 mSDsluCounter, 25657 mSDsCounter, 0 mSdLazyCounter, 2351 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18981 SdHoareTripleChecker+Valid, 27228 SdHoareTripleChecker+Invalid, 2414 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 2351 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-08 16:55:57,299 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [18981 Valid, 27228 Invalid, 2414 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [63 Valid, 2351 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-08 16:55:57,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10518 states. [2024-11-08 16:55:57,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10518 to 8942. [2024-11-08 16:55:57,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8942 states, 8940 states have (on average 1.3060402684563759) internal successors, (11676), 8941 states have internal predecessors, (11676), 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) [2024-11-08 16:55:57,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8942 states to 8942 states and 11676 transitions. [2024-11-08 16:55:57,556 INFO L78 Accepts]: Start accepts. Automaton has 8942 states and 11676 transitions. Word has length 62 [2024-11-08 16:55:57,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:55:57,556 INFO L471 AbstractCegarLoop]: Abstraction has 8942 states and 11676 transitions. [2024-11-08 16:55:57,556 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 3.8048780487804876) internal successors, (156), 41 states have internal predecessors, (156), 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) [2024-11-08 16:55:57,556 INFO L276 IsEmpty]: Start isEmpty. Operand 8942 states and 11676 transitions. [2024-11-08 16:55:57,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2024-11-08 16:55:57,557 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:55:57,557 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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] [2024-11-08 16:55:57,571 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-08 16:55:57,758 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:55:57,758 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:55:57,758 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:55:57,759 INFO L85 PathProgramCache]: Analyzing trace with hash 1645833661, now seen corresponding path program 1 times [2024-11-08 16:55:57,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:55:57,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362481360] [2024-11-08 16:55:57,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:55:57,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:55:57,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:55:58,365 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 31 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:55:58,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:55:58,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [362481360] [2024-11-08 16:55:58,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [362481360] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:55:58,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1663446283] [2024-11-08 16:55:58,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:55:58,366 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:55:58,366 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 16:55:58,367 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) [2024-11-08 16:55:58,368 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-08 16:55:58,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:55:58,465 INFO L255 TraceCheckSpWp]: Trace formula consists of 430 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-08 16:55:58,467 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:55:58,993 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 33 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:55:58,993 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:56:00,245 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 31 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:56:00,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1663446283] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:56:00,245 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:56:00,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 26 [2024-11-08 16:56:00,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325766125] [2024-11-08 16:56:00,245 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:56:00,246 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-08 16:56:00,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:56:00,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-08 16:56:00,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=597, Unknown=0, NotChecked=0, Total=702 [2024-11-08 16:56:00,246 INFO L87 Difference]: Start difference. First operand 8942 states and 11676 transitions. Second operand has 27 states, 27 states have (on average 7.962962962962963) internal successors, (215), 26 states have internal predecessors, (215), 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) [2024-11-08 16:56:00,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:56:00,867 INFO L93 Difference]: Finished difference Result 12524 states and 16187 transitions. [2024-11-08 16:56:00,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-08 16:56:00,868 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 7.962962962962963) internal successors, (215), 26 states have internal predecessors, (215), 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 99 [2024-11-08 16:56:00,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:56:00,875 INFO L225 Difference]: With dead ends: 12524 [2024-11-08 16:56:00,875 INFO L226 Difference]: Without dead ends: 9142 [2024-11-08 16:56:00,878 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 183 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 276 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=343, Invalid=1217, Unknown=0, NotChecked=0, Total=1560 [2024-11-08 16:56:00,879 INFO L432 NwaCegarLoop]: 1510 mSDtfsCounter, 14858 mSDsluCounter, 13601 mSDsCounter, 0 mSdLazyCounter, 541 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14858 SdHoareTripleChecker+Valid, 15111 SdHoareTripleChecker+Invalid, 562 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 541 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-08 16:56:00,879 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [14858 Valid, 15111 Invalid, 562 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 541 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-08 16:56:00,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9142 states. [2024-11-08 16:56:01,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9142 to 7816. [2024-11-08 16:56:01,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7816 states, 7814 states have (on average 1.3075249552086) internal successors, (10217), 7815 states have internal predecessors, (10217), 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) [2024-11-08 16:56:01,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7816 states to 7816 states and 10217 transitions. [2024-11-08 16:56:01,119 INFO L78 Accepts]: Start accepts. Automaton has 7816 states and 10217 transitions. Word has length 99 [2024-11-08 16:56:01,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:56:01,120 INFO L471 AbstractCegarLoop]: Abstraction has 7816 states and 10217 transitions. [2024-11-08 16:56:01,120 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 7.962962962962963) internal successors, (215), 26 states have internal predecessors, (215), 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) [2024-11-08 16:56:01,120 INFO L276 IsEmpty]: Start isEmpty. Operand 7816 states and 10217 transitions. [2024-11-08 16:56:01,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2024-11-08 16:56:01,123 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:56:01,123 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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] [2024-11-08 16:56:01,138 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-08 16:56:01,327 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:56:01,328 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:56:01,328 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:56:01,328 INFO L85 PathProgramCache]: Analyzing trace with hash -1960996049, now seen corresponding path program 1 times [2024-11-08 16:56:01,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:56:01,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357038069] [2024-11-08 16:56:01,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:56:01,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:56:01,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:56:01,978 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 34 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:56:01,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:56:01,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [357038069] [2024-11-08 16:56:01,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [357038069] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:56:01,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [88570741] [2024-11-08 16:56:01,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:56:01,978 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:56:01,979 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 16:56:01,980 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) [2024-11-08 16:56:01,981 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-08 16:56:02,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:56:02,080 INFO L255 TraceCheckSpWp]: Trace formula consists of 432 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-08 16:56:02,082 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:56:02,607 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 38 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:56:02,607 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:56:03,544 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 34 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:56:03,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [88570741] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:56:03,544 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:56:03,544 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 11, 11] total 30 [2024-11-08 16:56:03,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212643039] [2024-11-08 16:56:03,544 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:56:03,545 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-11-08 16:56:03,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:56:03,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-11-08 16:56:03,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=808, Unknown=0, NotChecked=0, Total=930 [2024-11-08 16:56:03,546 INFO L87 Difference]: Start difference. First operand 7816 states and 10217 transitions. Second operand has 31 states, 31 states have (on average 7.451612903225806) internal successors, (231), 30 states have internal predecessors, (231), 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) [2024-11-08 16:56:04,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:56:04,678 INFO L93 Difference]: Finished difference Result 10774 states and 13869 transitions. [2024-11-08 16:56:04,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-08 16:56:04,679 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 7.451612903225806) internal successors, (231), 30 states have internal predecessors, (231), 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 99 [2024-11-08 16:56:04,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:56:04,685 INFO L225 Difference]: With dead ends: 10774 [2024-11-08 16:56:04,685 INFO L226 Difference]: Without dead ends: 7902 [2024-11-08 16:56:04,689 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 580 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=669, Invalid=2411, Unknown=0, NotChecked=0, Total=3080 [2024-11-08 16:56:04,689 INFO L432 NwaCegarLoop]: 1537 mSDtfsCounter, 16573 mSDsluCounter, 12306 mSDsCounter, 0 mSdLazyCounter, 853 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16573 SdHoareTripleChecker+Valid, 13843 SdHoareTripleChecker+Invalid, 877 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 853 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-08 16:56:04,689 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [16573 Valid, 13843 Invalid, 877 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 853 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-08 16:56:04,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7902 states. [2024-11-08 16:56:04,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7902 to 7816. [2024-11-08 16:56:04,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7816 states, 7814 states have (on average 1.3020220117737396) internal successors, (10174), 7815 states have internal predecessors, (10174), 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) [2024-11-08 16:56:04,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7816 states to 7816 states and 10174 transitions. [2024-11-08 16:56:04,941 INFO L78 Accepts]: Start accepts. Automaton has 7816 states and 10174 transitions. Word has length 99 [2024-11-08 16:56:04,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:56:04,942 INFO L471 AbstractCegarLoop]: Abstraction has 7816 states and 10174 transitions. [2024-11-08 16:56:04,942 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 7.451612903225806) internal successors, (231), 30 states have internal predecessors, (231), 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) [2024-11-08 16:56:04,942 INFO L276 IsEmpty]: Start isEmpty. Operand 7816 states and 10174 transitions. [2024-11-08 16:56:04,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2024-11-08 16:56:04,943 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:56:04,943 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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] [2024-11-08 16:56:04,956 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-08 16:56:05,143 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:56:05,144 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:56:05,144 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:56:05,144 INFO L85 PathProgramCache]: Analyzing trace with hash 852864303, now seen corresponding path program 1 times [2024-11-08 16:56:05,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:56:05,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917672950] [2024-11-08 16:56:05,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:56:05,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:56:05,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:56:05,729 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 24 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:56:05,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:56:05,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917672950] [2024-11-08 16:56:05,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [917672950] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:56:05,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1179822839] [2024-11-08 16:56:05,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:56:05,730 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:56:05,730 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 16:56:05,731 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) [2024-11-08 16:56:05,732 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-08 16:56:05,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:56:05,818 INFO L255 TraceCheckSpWp]: Trace formula consists of 432 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-08 16:56:05,819 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:56:06,323 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 18 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:56:06,323 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:56:07,659 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 16 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:56:07,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1179822839] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:56:07,659 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:56:07,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 11, 11] total 40 [2024-11-08 16:56:07,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485345489] [2024-11-08 16:56:07,659 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:56:07,660 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2024-11-08 16:56:07,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:56:07,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2024-11-08 16:56:07,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=1488, Unknown=0, NotChecked=0, Total=1640 [2024-11-08 16:56:07,660 INFO L87 Difference]: Start difference. First operand 7816 states and 10174 transitions. Second operand has 41 states, 41 states have (on average 6.902439024390244) internal successors, (283), 40 states have internal predecessors, (283), 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) [2024-11-08 16:56:10,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:56:10,955 INFO L93 Difference]: Finished difference Result 12802 states and 16399 transitions. [2024-11-08 16:56:10,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2024-11-08 16:56:10,956 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 6.902439024390244) internal successors, (283), 40 states have internal predecessors, (283), 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 99 [2024-11-08 16:56:10,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:56:10,964 INFO L225 Difference]: With dead ends: 12802 [2024-11-08 16:56:10,964 INFO L226 Difference]: Without dead ends: 10546 [2024-11-08 16:56:10,968 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 278 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2534 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=1910, Invalid=8596, Unknown=0, NotChecked=0, Total=10506 [2024-11-08 16:56:10,968 INFO L432 NwaCegarLoop]: 1554 mSDtfsCounter, 20692 mSDsluCounter, 24866 mSDsCounter, 0 mSdLazyCounter, 2185 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20692 SdHoareTripleChecker+Valid, 26420 SdHoareTripleChecker+Invalid, 2270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 2185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-08 16:56:10,968 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [20692 Valid, 26420 Invalid, 2270 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [85 Valid, 2185 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-08 16:56:10,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10546 states. [2024-11-08 16:56:11,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10546 to 8920. [2024-11-08 16:56:11,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8920 states, 8918 states have (on average 1.283247364880018) internal successors, (11444), 8919 states have internal predecessors, (11444), 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) [2024-11-08 16:56:11,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8920 states to 8920 states and 11444 transitions. [2024-11-08 16:56:11,257 INFO L78 Accepts]: Start accepts. Automaton has 8920 states and 11444 transitions. Word has length 99 [2024-11-08 16:56:11,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:56:11,257 INFO L471 AbstractCegarLoop]: Abstraction has 8920 states and 11444 transitions. [2024-11-08 16:56:11,257 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 6.902439024390244) internal successors, (283), 40 states have internal predecessors, (283), 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) [2024-11-08 16:56:11,257 INFO L276 IsEmpty]: Start isEmpty. Operand 8920 states and 11444 transitions. [2024-11-08 16:56:11,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2024-11-08 16:56:11,259 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:56:11,259 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 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] [2024-11-08 16:56:11,271 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-08 16:56:11,459 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-11-08 16:56:11,459 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:56:11,460 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:56:11,460 INFO L85 PathProgramCache]: Analyzing trace with hash -99841195, now seen corresponding path program 1 times [2024-11-08 16:56:11,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:56:11,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062160017] [2024-11-08 16:56:11,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:56:11,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:56:11,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:56:12,706 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 16 proven. 71 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:56:12,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:56:12,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062160017] [2024-11-08 16:56:12,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2062160017] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:56:12,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1660568089] [2024-11-08 16:56:12,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:56:12,707 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:56:12,707 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 16:56:12,709 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:56:12,710 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-08 16:56:12,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:56:12,807 INFO L255 TraceCheckSpWp]: Trace formula consists of 434 conjuncts, 55 conjuncts are in the unsatisfiable core [2024-11-08 16:56:12,809 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:56:14,686 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 55 proven. 6 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-08 16:56:14,686 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:56:20,023 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 16 proven. 71 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:56:20,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1660568089] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:56:20,023 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:56:20,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 21, 29] total 71 [2024-11-08 16:56:20,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764167128] [2024-11-08 16:56:20,024 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:56:20,024 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 71 states [2024-11-08 16:56:20,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:56:20,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2024-11-08 16:56:20,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=486, Invalid=4484, Unknown=0, NotChecked=0, Total=4970 [2024-11-08 16:56:20,025 INFO L87 Difference]: Start difference. First operand 8920 states and 11444 transitions. Second operand has 71 states, 71 states have (on average 3.788732394366197) internal successors, (269), 71 states have internal predecessors, (269), 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)