./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem11_label22.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4a390ef5 Calling Ultimate with: /root/.sdkman/candidates/java/current/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 /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem11_label22.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 782212e92ca4a15b07e81f4c0ca47da63585acb1e5a128bc81275e5c438e9fe1 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4a390ef-m [2024-10-23 21:02:11,088 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-23 21:02:11,167 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-23 21:02:11,173 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-23 21:02:11,176 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-23 21:02:11,209 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-23 21:02:11,210 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-23 21:02:11,210 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-23 21:02:11,211 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-23 21:02:11,211 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-23 21:02:11,212 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-23 21:02:11,212 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-23 21:02:11,213 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-23 21:02:11,214 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-23 21:02:11,215 INFO L153 SettingsManager]: * Use SBE=true [2024-10-23 21:02:11,215 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-23 21:02:11,215 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-23 21:02:11,216 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-23 21:02:11,216 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-23 21:02:11,216 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-23 21:02:11,217 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-23 21:02:11,220 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-23 21:02:11,221 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-23 21:02:11,221 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-23 21:02:11,221 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-23 21:02:11,222 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-23 21:02:11,222 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-23 21:02:11,222 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-23 21:02:11,222 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-23 21:02:11,223 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-23 21:02:11,223 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-23 21:02:11,225 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-23 21:02:11,226 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-23 21:02:11,226 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-23 21:02:11,226 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-23 21:02:11,226 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-23 21:02:11,227 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-23 21:02:11,227 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-23 21:02:11,227 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-23 21:02:11,227 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-23 21:02:11,228 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-23 21:02:11,228 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-23 21:02:11,228 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 782212e92ca4a15b07e81f4c0ca47da63585acb1e5a128bc81275e5c438e9fe1 [2024-10-23 21:02:11,473 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-23 21:02:11,498 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-23 21:02:11,503 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-23 21:02:11,504 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-23 21:02:11,505 INFO L274 PluginConnector]: CDTParser initialized [2024-10-23 21:02:11,506 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem11_label22.c [2024-10-23 21:02:13,030 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-23 21:02:13,317 INFO L384 CDTParser]: Found 1 translation units. [2024-10-23 21:02:13,318 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem11_label22.c [2024-10-23 21:02:13,345 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2302c25cc/7f80d0cfb9c74ef59635b69a3ad41d88/FLAG5f54dd01e [2024-10-23 21:02:13,364 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2302c25cc/7f80d0cfb9c74ef59635b69a3ad41d88 [2024-10-23 21:02:13,367 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-23 21:02:13,369 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-23 21:02:13,372 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-23 21:02:13,373 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-23 21:02:13,379 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-23 21:02:13,380 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 09:02:13" (1/1) ... [2024-10-23 21:02:13,381 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4dd03a16 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:02:13, skipping insertion in model container [2024-10-23 21:02:13,381 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 09:02:13" (1/1) ... [2024-10-23 21:02:13,446 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-23 21:02:13,713 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem11_label22.c[8004,8017] [2024-10-23 21:02:13,903 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-23 21:02:13,910 INFO L200 MainTranslator]: Completed pre-run [2024-10-23 21:02:13,932 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem11_label22.c[8004,8017] [2024-10-23 21:02:14,017 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-23 21:02:14,036 INFO L204 MainTranslator]: Completed translation [2024-10-23 21:02:14,036 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:02:14 WrapperNode [2024-10-23 21:02:14,036 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-23 21:02:14,037 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-23 21:02:14,038 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-23 21:02:14,038 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-23 21:02:14,044 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:02:14" (1/1) ... [2024-10-23 21:02:14,100 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:02:14" (1/1) ... [2024-10-23 21:02:14,190 INFO L138 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1000 [2024-10-23 21:02:14,191 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-23 21:02:14,191 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-23 21:02:14,192 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-23 21:02:14,192 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-23 21:02:14,203 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:02:14" (1/1) ... [2024-10-23 21:02:14,203 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:02:14" (1/1) ... [2024-10-23 21:02:14,212 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:02:14" (1/1) ... [2024-10-23 21:02:14,270 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]. [2024-10-23 21:02:14,271 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:02:14" (1/1) ... [2024-10-23 21:02:14,271 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:02:14" (1/1) ... [2024-10-23 21:02:14,320 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:02:14" (1/1) ... [2024-10-23 21:02:14,333 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:02:14" (1/1) ... [2024-10-23 21:02:14,358 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:02:14" (1/1) ... [2024-10-23 21:02:14,367 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:02:14" (1/1) ... [2024-10-23 21:02:14,390 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-23 21:02:14,392 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-23 21:02:14,392 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-23 21:02:14,393 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-23 21:02:14,393 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:02:14" (1/1) ... [2024-10-23 21:02:14,400 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-23 21:02:14,418 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 21:02:14,434 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) [2024-10-23 21:02:14,437 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 [2024-10-23 21:02:14,483 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-23 21:02:14,483 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-23 21:02:14,483 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-23 21:02:14,484 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-23 21:02:14,553 INFO L238 CfgBuilder]: Building ICFG [2024-10-23 21:02:14,555 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-23 21:02:16,079 INFO L? ?]: Removed 129 outVars from TransFormulas that were not future-live. [2024-10-23 21:02:16,079 INFO L287 CfgBuilder]: Performing block encoding [2024-10-23 21:02:16,137 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-23 21:02:16,138 INFO L314 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-23 21:02:16,138 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 09:02:16 BoogieIcfgContainer [2024-10-23 21:02:16,138 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-23 21:02:16,142 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-23 21:02:16,142 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-23 21:02:16,145 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-23 21:02:16,145 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 09:02:13" (1/3) ... [2024-10-23 21:02:16,146 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72fca203 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 09:02:16, skipping insertion in model container [2024-10-23 21:02:16,146 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:02:14" (2/3) ... [2024-10-23 21:02:16,147 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72fca203 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 09:02:16, skipping insertion in model container [2024-10-23 21:02:16,147 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 09:02:16" (3/3) ... [2024-10-23 21:02:16,148 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem11_label22.c [2024-10-23 21:02:16,164 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-23 21:02:16,165 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-23 21:02:16,241 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-23 21:02:16,249 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;@12cfdbd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-23 21:02:16,250 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-23 21:02:16,255 INFO L276 IsEmpty]: Start isEmpty. Operand has 221 states, 219 states have (on average 1.917808219178082) internal successors, (420), 220 states have internal predecessors, (420), 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) [2024-10-23 21:02:16,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-10-23 21:02:16,264 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:02:16,265 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] [2024-10-23 21:02:16,266 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:02:16,272 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:02:16,272 INFO L85 PathProgramCache]: Analyzing trace with hash -1831296511, now seen corresponding path program 1 times [2024-10-23 21:02:16,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:02:16,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259944429] [2024-10-23 21:02:16,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:02:16,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:02:16,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:02:16,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 21:02:16,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:02:16,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259944429] [2024-10-23 21:02:16,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1259944429] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:02:16,498 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:02:16,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-23 21:02:16,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964155674] [2024-10-23 21:02:16,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:02:16,517 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-23 21:02:16,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:02:16,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-23 21:02:16,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-23 21:02:16,550 INFO L87 Difference]: Start difference. First operand has 221 states, 219 states have (on average 1.917808219178082) internal successors, (420), 220 states have internal predecessors, (420), 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 27.0) internal successors, (54), 2 states have internal predecessors, (54), 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) [2024-10-23 21:02:16,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:02:16,603 INFO L93 Difference]: Finished difference Result 441 states and 839 transitions. [2024-10-23 21:02:16,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-23 21:02:16,607 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 27.0) internal successors, (54), 2 states have internal predecessors, (54), 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 [2024-10-23 21:02:16,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:02:16,620 INFO L225 Difference]: With dead ends: 441 [2024-10-23 21:02:16,620 INFO L226 Difference]: Without dead ends: 219 [2024-10-23 21:02:16,624 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 [2024-10-23 21:02:16,628 INFO L432 NwaCegarLoop]: 355 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 355 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-23 21:02:16,630 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 355 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-23 21:02:16,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2024-10-23 21:02:16,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 219. [2024-10-23 21:02:16,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 218 states have (on average 1.628440366972477) internal successors, (355), 218 states have internal predecessors, (355), 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) [2024-10-23 21:02:16,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 355 transitions. [2024-10-23 21:02:16,678 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 355 transitions. Word has length 54 [2024-10-23 21:02:16,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:02:16,678 INFO L471 AbstractCegarLoop]: Abstraction has 219 states and 355 transitions. [2024-10-23 21:02:16,679 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 27.0) internal successors, (54), 2 states have internal predecessors, (54), 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) [2024-10-23 21:02:16,679 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 355 transitions. [2024-10-23 21:02:16,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-10-23 21:02:16,680 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:02:16,680 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] [2024-10-23 21:02:16,683 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-23 21:02:16,683 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:02:16,684 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:02:16,684 INFO L85 PathProgramCache]: Analyzing trace with hash 551995407, now seen corresponding path program 1 times [2024-10-23 21:02:16,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:02:16,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933645709] [2024-10-23 21:02:16,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:02:16,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:02:16,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:02:16,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 21:02:16,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:02:16,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933645709] [2024-10-23 21:02:16,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1933645709] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:02:16,952 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:02:16,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-23 21:02:16,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841091210] [2024-10-23 21:02:16,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:02:16,953 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:02:16,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:02:16,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:02:16,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:02:16,955 INFO L87 Difference]: Start difference. First operand 219 states and 355 transitions. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 2 states have internal predecessors, (54), 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) [2024-10-23 21:02:17,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:02:17,937 INFO L93 Difference]: Finished difference Result 630 states and 1026 transitions. [2024-10-23 21:02:17,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:02:17,937 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 2 states have internal predecessors, (54), 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 [2024-10-23 21:02:17,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:02:17,940 INFO L225 Difference]: With dead ends: 630 [2024-10-23 21:02:17,940 INFO L226 Difference]: Without dead ends: 412 [2024-10-23 21:02:17,941 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:02:17,943 INFO L432 NwaCegarLoop]: 126 mSDtfsCounter, 169 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 536 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 634 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 536 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-10-23 21:02:17,943 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [169 Valid, 155 Invalid, 634 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 536 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-10-23 21:02:17,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 412 states. [2024-10-23 21:02:17,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 412 to 412. [2024-10-23 21:02:17,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 412 states, 411 states have (on average 1.4549878345498783) internal successors, (598), 411 states have internal predecessors, (598), 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) [2024-10-23 21:02:17,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 412 states to 412 states and 598 transitions. [2024-10-23 21:02:17,964 INFO L78 Accepts]: Start accepts. Automaton has 412 states and 598 transitions. Word has length 54 [2024-10-23 21:02:17,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:02:17,964 INFO L471 AbstractCegarLoop]: Abstraction has 412 states and 598 transitions. [2024-10-23 21:02:17,964 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 2 states have internal predecessors, (54), 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) [2024-10-23 21:02:17,965 INFO L276 IsEmpty]: Start isEmpty. Operand 412 states and 598 transitions. [2024-10-23 21:02:17,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2024-10-23 21:02:17,968 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:02:17,968 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-10-23 21:02:17,969 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-23 21:02:17,969 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:02:17,970 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:02:17,970 INFO L85 PathProgramCache]: Analyzing trace with hash 447208182, now seen corresponding path program 1 times [2024-10-23 21:02:17,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:02:17,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459729027] [2024-10-23 21:02:17,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:02:17,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:02:18,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:02:18,156 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 21:02:18,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:02:18,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459729027] [2024-10-23 21:02:18,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1459729027] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:02:18,159 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:02:18,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-23 21:02:18,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18583185] [2024-10-23 21:02:18,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:02:18,160 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:02:18,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:02:18,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:02:18,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:02:18,163 INFO L87 Difference]: Start difference. First operand 412 states and 598 transitions. Second operand has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 2 states have internal predecessors, (122), 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) [2024-10-23 21:02:18,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:02:18,897 INFO L93 Difference]: Finished difference Result 1210 states and 1762 transitions. [2024-10-23 21:02:18,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:02:18,897 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 2 states have internal predecessors, (122), 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 122 [2024-10-23 21:02:18,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:02:18,902 INFO L225 Difference]: With dead ends: 1210 [2024-10-23 21:02:18,902 INFO L226 Difference]: Without dead ends: 799 [2024-10-23 21:02:18,904 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:02:18,905 INFO L432 NwaCegarLoop]: 99 mSDtfsCounter, 142 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 524 mSolverCounterSat, 148 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 672 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 148 IncrementalHoareTripleChecker+Valid, 524 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-23 21:02:18,910 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 118 Invalid, 672 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [148 Valid, 524 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-23 21:02:18,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 799 states. [2024-10-23 21:02:18,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 799 to 788. [2024-10-23 21:02:18,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 788 states, 787 states have (on average 1.3748411689961881) internal successors, (1082), 787 states have internal predecessors, (1082), 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) [2024-10-23 21:02:18,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 788 states to 788 states and 1082 transitions. [2024-10-23 21:02:18,964 INFO L78 Accepts]: Start accepts. Automaton has 788 states and 1082 transitions. Word has length 122 [2024-10-23 21:02:18,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:02:18,964 INFO L471 AbstractCegarLoop]: Abstraction has 788 states and 1082 transitions. [2024-10-23 21:02:18,964 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 2 states have internal predecessors, (122), 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) [2024-10-23 21:02:18,965 INFO L276 IsEmpty]: Start isEmpty. Operand 788 states and 1082 transitions. [2024-10-23 21:02:18,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-10-23 21:02:18,970 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:02:18,970 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-10-23 21:02:18,970 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-23 21:02:18,970 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:02:18,971 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:02:18,971 INFO L85 PathProgramCache]: Analyzing trace with hash 500079035, now seen corresponding path program 1 times [2024-10-23 21:02:18,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:02:18,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393829557] [2024-10-23 21:02:18,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:02:18,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:02:19,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:02:19,361 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 21:02:19,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:02:19,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393829557] [2024-10-23 21:02:19,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1393829557] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:02:19,363 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:02:19,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-23 21:02:19,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668023984] [2024-10-23 21:02:19,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:02:19,364 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:02:19,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:02:19,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:02:19,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:02:19,366 INFO L87 Difference]: Start difference. First operand 788 states and 1082 transitions. Second operand has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 2 states have internal predecessors, (124), 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) [2024-10-23 21:02:20,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:02:20,001 INFO L93 Difference]: Finished difference Result 1944 states and 2611 transitions. [2024-10-23 21:02:20,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:02:20,002 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 2 states have internal predecessors, (124), 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 124 [2024-10-23 21:02:20,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:02:20,007 INFO L225 Difference]: With dead ends: 1944 [2024-10-23 21:02:20,007 INFO L226 Difference]: Without dead ends: 1157 [2024-10-23 21:02:20,008 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:02:20,010 INFO L432 NwaCegarLoop]: 166 mSDtfsCounter, 119 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 532 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 188 SdHoareTripleChecker+Invalid, 569 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 532 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-23 21:02:20,010 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [119 Valid, 188 Invalid, 569 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 532 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-23 21:02:20,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1157 states. [2024-10-23 21:02:20,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1157 to 1156. [2024-10-23 21:02:20,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1156 states, 1155 states have (on average 1.270995670995671) internal successors, (1468), 1155 states have internal predecessors, (1468), 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) [2024-10-23 21:02:20,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1156 states to 1156 states and 1468 transitions. [2024-10-23 21:02:20,040 INFO L78 Accepts]: Start accepts. Automaton has 1156 states and 1468 transitions. Word has length 124 [2024-10-23 21:02:20,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:02:20,041 INFO L471 AbstractCegarLoop]: Abstraction has 1156 states and 1468 transitions. [2024-10-23 21:02:20,041 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 2 states have internal predecessors, (124), 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) [2024-10-23 21:02:20,041 INFO L276 IsEmpty]: Start isEmpty. Operand 1156 states and 1468 transitions. [2024-10-23 21:02:20,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2024-10-23 21:02:20,047 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:02:20,047 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:02:20,047 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-23 21:02:20,047 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:02:20,048 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:02:20,048 INFO L85 PathProgramCache]: Analyzing trace with hash 203254623, now seen corresponding path program 1 times [2024-10-23 21:02:20,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:02:20,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358159555] [2024-10-23 21:02:20,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:02:20,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:02:20,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:02:20,318 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 21:02:20,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:02:20,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358159555] [2024-10-23 21:02:20,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1358159555] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:02:20,319 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:02:20,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:02:20,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736606678] [2024-10-23 21:02:20,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:02:20,320 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:02:20,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:02:20,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:02:20,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:02:20,321 INFO L87 Difference]: Start difference. First operand 1156 states and 1468 transitions. Second operand has 3 states, 3 states have (on average 60.333333333333336) internal successors, (181), 3 states have internal predecessors, (181), 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) [2024-10-23 21:02:21,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:02:21,079 INFO L93 Difference]: Finished difference Result 2518 states and 3348 transitions. [2024-10-23 21:02:21,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:02:21,081 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 60.333333333333336) internal successors, (181), 3 states have internal predecessors, (181), 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 181 [2024-10-23 21:02:21,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:02:21,087 INFO L225 Difference]: With dead ends: 2518 [2024-10-23 21:02:21,087 INFO L226 Difference]: Without dead ends: 1547 [2024-10-23 21:02:21,089 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 [2024-10-23 21:02:21,096 INFO L432 NwaCegarLoop]: 288 mSDtfsCounter, 180 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 584 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 180 SdHoareTripleChecker+Valid, 319 SdHoareTripleChecker+Invalid, 635 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 584 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-23 21:02:21,096 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [180 Valid, 319 Invalid, 635 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 584 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-23 21:02:21,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1547 states. [2024-10-23 21:02:21,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1547 to 1544. [2024-10-23 21:02:21,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1544 states, 1543 states have (on average 1.2935839274141283) internal successors, (1996), 1543 states have internal predecessors, (1996), 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) [2024-10-23 21:02:21,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1544 states to 1544 states and 1996 transitions. [2024-10-23 21:02:21,123 INFO L78 Accepts]: Start accepts. Automaton has 1544 states and 1996 transitions. Word has length 181 [2024-10-23 21:02:21,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:02:21,125 INFO L471 AbstractCegarLoop]: Abstraction has 1544 states and 1996 transitions. [2024-10-23 21:02:21,125 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 60.333333333333336) internal successors, (181), 3 states have internal predecessors, (181), 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) [2024-10-23 21:02:21,125 INFO L276 IsEmpty]: Start isEmpty. Operand 1544 states and 1996 transitions. [2024-10-23 21:02:21,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2024-10-23 21:02:21,129 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:02:21,129 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:02:21,130 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-23 21:02:21,130 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:02:21,131 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:02:21,131 INFO L85 PathProgramCache]: Analyzing trace with hash -838952034, now seen corresponding path program 1 times [2024-10-23 21:02:21,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:02:21,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300815408] [2024-10-23 21:02:21,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:02:21,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:02:21,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:02:21,414 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 105 proven. 0 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2024-10-23 21:02:21,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:02:21,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300815408] [2024-10-23 21:02:21,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [300815408] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:02:21,415 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:02:21,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:02:21,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260254301] [2024-10-23 21:02:21,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:02:21,416 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:02:21,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:02:21,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:02:21,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:02:21,417 INFO L87 Difference]: Start difference. First operand 1544 states and 1996 transitions. Second operand has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 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) [2024-10-23 21:02:22,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:02:22,271 INFO L93 Difference]: Finished difference Result 3649 states and 4814 transitions. [2024-10-23 21:02:22,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:02:22,273 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 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 236 [2024-10-23 21:02:22,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:02:22,281 INFO L225 Difference]: With dead ends: 3649 [2024-10-23 21:02:22,281 INFO L226 Difference]: Without dead ends: 2290 [2024-10-23 21:02:22,283 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 [2024-10-23 21:02:22,285 INFO L432 NwaCegarLoop]: 369 mSDtfsCounter, 142 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 597 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 389 SdHoareTripleChecker+Invalid, 683 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 597 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-10-23 21:02:22,285 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 389 Invalid, 683 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 597 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-10-23 21:02:22,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2290 states. [2024-10-23 21:02:22,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2290 to 2097. [2024-10-23 21:02:22,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2097 states, 2096 states have (on average 1.2676526717557253) internal successors, (2657), 2096 states have internal predecessors, (2657), 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) [2024-10-23 21:02:22,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2097 states to 2097 states and 2657 transitions. [2024-10-23 21:02:22,325 INFO L78 Accepts]: Start accepts. Automaton has 2097 states and 2657 transitions. Word has length 236 [2024-10-23 21:02:22,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:02:22,325 INFO L471 AbstractCegarLoop]: Abstraction has 2097 states and 2657 transitions. [2024-10-23 21:02:22,326 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 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) [2024-10-23 21:02:22,326 INFO L276 IsEmpty]: Start isEmpty. Operand 2097 states and 2657 transitions. [2024-10-23 21:02:22,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2024-10-23 21:02:22,331 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:02:22,331 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:02:22,331 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-23 21:02:22,332 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:02:22,332 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:02:22,332 INFO L85 PathProgramCache]: Analyzing trace with hash 44325293, now seen corresponding path program 1 times [2024-10-23 21:02:22,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:02:22,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957967006] [2024-10-23 21:02:22,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:02:22,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:02:22,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:02:22,917 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 91 proven. 14 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2024-10-23 21:02:22,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:02:22,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957967006] [2024-10-23 21:02:22,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1957967006] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 21:02:22,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1141678673] [2024-10-23 21:02:22,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:02:22,918 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 21:02:22,918 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 21:02:22,922 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) [2024-10-23 21:02:22,923 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-23 21:02:23,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:02:23,044 INFO L255 TraceCheckSpWp]: Trace formula consists of 350 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-23 21:02:23,052 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 21:02:23,180 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 105 proven. 0 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2024-10-23 21:02:23,180 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-23 21:02:23,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1141678673] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:02:23,180 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-23 21:02:23,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2024-10-23 21:02:23,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848022144] [2024-10-23 21:02:23,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:02:23,181 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:02:23,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:02:23,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:02:23,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-10-23 21:02:23,182 INFO L87 Difference]: Start difference. First operand 2097 states and 2657 transitions. Second operand has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 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) [2024-10-23 21:02:24,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:02:24,073 INFO L93 Difference]: Finished difference Result 5670 states and 7286 transitions. [2024-10-23 21:02:24,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:02:24,074 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 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 242 [2024-10-23 21:02:24,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:02:24,084 INFO L225 Difference]: With dead ends: 5670 [2024-10-23 21:02:24,085 INFO L226 Difference]: Without dead ends: 3574 [2024-10-23 21:02:24,087 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 241 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-10-23 21:02:24,089 INFO L432 NwaCegarLoop]: 254 mSDtfsCounter, 175 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 508 mSolverCounterSat, 188 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 267 SdHoareTripleChecker+Invalid, 696 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 188 IncrementalHoareTripleChecker+Valid, 508 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-10-23 21:02:24,089 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [175 Valid, 267 Invalid, 696 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [188 Valid, 508 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-10-23 21:02:24,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3574 states. [2024-10-23 21:02:24,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3574 to 3571. [2024-10-23 21:02:24,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3571 states, 3570 states have (on average 1.2509803921568627) internal successors, (4466), 3570 states have internal predecessors, (4466), 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) [2024-10-23 21:02:24,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3571 states to 3571 states and 4466 transitions. [2024-10-23 21:02:24,147 INFO L78 Accepts]: Start accepts. Automaton has 3571 states and 4466 transitions. Word has length 242 [2024-10-23 21:02:24,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:02:24,148 INFO L471 AbstractCegarLoop]: Abstraction has 3571 states and 4466 transitions. [2024-10-23 21:02:24,148 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 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) [2024-10-23 21:02:24,148 INFO L276 IsEmpty]: Start isEmpty. Operand 3571 states and 4466 transitions. [2024-10-23 21:02:24,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2024-10-23 21:02:24,152 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:02:24,153 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-10-23 21:02:24,172 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-10-23 21:02:24,353 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 21:02:24,354 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:02:24,354 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:02:24,354 INFO L85 PathProgramCache]: Analyzing trace with hash 269088157, now seen corresponding path program 1 times [2024-10-23 21:02:24,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:02:24,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031738018] [2024-10-23 21:02:24,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:02:24,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:02:24,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:02:24,637 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 204 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 21:02:24,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:02:24,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2031738018] [2024-10-23 21:02:24,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2031738018] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:02:24,637 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:02:24,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:02:24,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490465103] [2024-10-23 21:02:24,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:02:24,638 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-23 21:02:24,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:02:24,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-23 21:02:24,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-23 21:02:24,639 INFO L87 Difference]: Start difference. First operand 3571 states and 4466 transitions. Second operand has 4 states, 4 states have (on average 70.25) internal successors, (281), 3 states have internal predecessors, (281), 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) [2024-10-23 21:02:25,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:02:25,913 INFO L93 Difference]: Finished difference Result 11412 states and 14583 transitions. [2024-10-23 21:02:25,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-23 21:02:25,913 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 70.25) internal successors, (281), 3 states have internal predecessors, (281), 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 281 [2024-10-23 21:02:25,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:02:25,941 INFO L225 Difference]: With dead ends: 11412 [2024-10-23 21:02:25,941 INFO L226 Difference]: Without dead ends: 8026 [2024-10-23 21:02:25,947 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-23 21:02:25,949 INFO L432 NwaCegarLoop]: 42 mSDtfsCounter, 261 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 1137 mSolverCounterSat, 166 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 261 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 1303 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 166 IncrementalHoareTripleChecker+Valid, 1137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-10-23 21:02:25,949 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [261 Valid, 93 Invalid, 1303 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [166 Valid, 1137 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-10-23 21:02:25,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8026 states. [2024-10-23 21:02:26,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8026 to 8024. [2024-10-23 21:02:26,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8024 states, 8023 states have (on average 1.2535211267605635) internal successors, (10057), 8023 states have internal predecessors, (10057), 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) [2024-10-23 21:02:26,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8024 states to 8024 states and 10057 transitions. [2024-10-23 21:02:26,132 INFO L78 Accepts]: Start accepts. Automaton has 8024 states and 10057 transitions. Word has length 281 [2024-10-23 21:02:26,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:02:26,132 INFO L471 AbstractCegarLoop]: Abstraction has 8024 states and 10057 transitions. [2024-10-23 21:02:26,132 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 70.25) internal successors, (281), 3 states have internal predecessors, (281), 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) [2024-10-23 21:02:26,133 INFO L276 IsEmpty]: Start isEmpty. Operand 8024 states and 10057 transitions. [2024-10-23 21:02:26,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2024-10-23 21:02:26,139 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:02:26,139 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-10-23 21:02:26,140 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-23 21:02:26,140 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:02:26,141 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:02:26,141 INFO L85 PathProgramCache]: Analyzing trace with hash -1578186549, now seen corresponding path program 1 times [2024-10-23 21:02:26,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:02:26,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160669706] [2024-10-23 21:02:26,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:02:26,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:02:26,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:02:26,400 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 105 proven. 0 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2024-10-23 21:02:26,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:02:26,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160669706] [2024-10-23 21:02:26,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [160669706] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:02:26,402 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:02:26,402 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:02:26,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377595328] [2024-10-23 21:02:26,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:02:26,403 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:02:26,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:02:26,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:02:26,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:02:26,406 INFO L87 Difference]: Start difference. First operand 8024 states and 10057 transitions. Second operand has 3 states, 3 states have (on average 61.666666666666664) internal successors, (185), 3 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:02:27,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:02:27,287 INFO L93 Difference]: Finished difference Result 18084 states and 22878 transitions. [2024-10-23 21:02:27,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:02:27,288 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 61.666666666666664) internal successors, (185), 3 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 290 [2024-10-23 21:02:27,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:02:27,318 INFO L225 Difference]: With dead ends: 18084 [2024-10-23 21:02:27,318 INFO L226 Difference]: Without dead ends: 10245 [2024-10-23 21:02:27,327 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 [2024-10-23 21:02:27,328 INFO L432 NwaCegarLoop]: 360 mSDtfsCounter, 141 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 581 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 SdHoareTripleChecker+Valid, 381 SdHoareTripleChecker+Invalid, 673 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 581 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-10-23 21:02:27,328 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [141 Valid, 381 Invalid, 673 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 581 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-10-23 21:02:27,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10245 states. [2024-10-23 21:02:27,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10245 to 10231. [2024-10-23 21:02:27,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10231 states, 10230 states have (on average 1.221407624633431) internal successors, (12495), 10230 states have internal predecessors, (12495), 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) [2024-10-23 21:02:27,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10231 states to 10231 states and 12495 transitions. [2024-10-23 21:02:27,494 INFO L78 Accepts]: Start accepts. Automaton has 10231 states and 12495 transitions. Word has length 290 [2024-10-23 21:02:27,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:02:27,495 INFO L471 AbstractCegarLoop]: Abstraction has 10231 states and 12495 transitions. [2024-10-23 21:02:27,495 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 61.666666666666664) internal successors, (185), 3 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:02:27,495 INFO L276 IsEmpty]: Start isEmpty. Operand 10231 states and 12495 transitions. [2024-10-23 21:02:27,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2024-10-23 21:02:27,510 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:02:27,511 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:02:27,512 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-23 21:02:27,512 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:02:27,512 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:02:27,512 INFO L85 PathProgramCache]: Analyzing trace with hash 380915456, now seen corresponding path program 1 times [2024-10-23 21:02:27,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:02:27,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1794916197] [2024-10-23 21:02:27,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:02:27,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:02:27,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:02:28,274 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 173 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 21:02:28,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:02:28,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1794916197] [2024-10-23 21:02:28,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1794916197] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 21:02:28,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [382474687] [2024-10-23 21:02:28,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:02:28,274 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 21:02:28,275 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 21:02:28,277 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) [2024-10-23 21:02:28,278 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-23 21:02:28,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:02:28,424 INFO L255 TraceCheckSpWp]: Trace formula consists of 437 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-23 21:02:28,431 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 21:02:30,059 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 173 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 21:02:30,059 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-23 21:02:32,086 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 173 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 21:02:32,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [382474687] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-23 21:02:32,087 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-23 21:02:32,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-10-23 21:02:32,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184481333] [2024-10-23 21:02:32,087 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-23 21:02:32,088 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-23 21:02:32,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:02:32,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-23 21:02:32,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2024-10-23 21:02:32,090 INFO L87 Difference]: Start difference. First operand 10231 states and 12495 transitions. Second operand has 8 states, 8 states have (on average 72.375) internal successors, (579), 7 states have internal predecessors, (579), 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) [2024-10-23 21:02:34,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:02:34,590 INFO L93 Difference]: Finished difference Result 23640 states and 29104 transitions. [2024-10-23 21:02:34,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-23 21:02:34,595 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 72.375) internal successors, (579), 7 states have internal predecessors, (579), 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 328 [2024-10-23 21:02:34,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:02:34,641 INFO L225 Difference]: With dead ends: 23640 [2024-10-23 21:02:34,641 INFO L226 Difference]: Without dead ends: 14147 [2024-10-23 21:02:34,654 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 665 GetRequests, 652 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=75, Invalid=135, Unknown=0, NotChecked=0, Total=210 [2024-10-23 21:02:34,654 INFO L432 NwaCegarLoop]: 108 mSDtfsCounter, 1003 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 2539 mSolverCounterSat, 430 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1003 SdHoareTripleChecker+Valid, 163 SdHoareTripleChecker+Invalid, 2969 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 430 IncrementalHoareTripleChecker+Valid, 2539 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-10-23 21:02:34,655 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1003 Valid, 163 Invalid, 2969 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [430 Valid, 2539 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-10-23 21:02:34,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14147 states. [2024-10-23 21:02:34,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14147 to 10942. [2024-10-23 21:02:34,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10942 states, 10941 states have (on average 1.1883740060323553) internal successors, (13002), 10941 states have internal predecessors, (13002), 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) [2024-10-23 21:02:34,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10942 states to 10942 states and 13002 transitions. [2024-10-23 21:02:34,835 INFO L78 Accepts]: Start accepts. Automaton has 10942 states and 13002 transitions. Word has length 328 [2024-10-23 21:02:34,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:02:34,836 INFO L471 AbstractCegarLoop]: Abstraction has 10942 states and 13002 transitions. [2024-10-23 21:02:34,836 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 72.375) internal successors, (579), 7 states have internal predecessors, (579), 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) [2024-10-23 21:02:34,836 INFO L276 IsEmpty]: Start isEmpty. Operand 10942 states and 13002 transitions. [2024-10-23 21:02:34,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 349 [2024-10-23 21:02:34,848 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:02:34,849 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 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] [2024-10-23 21:02:34,867 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-23 21:02:35,053 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,SelfDestructingSolverStorable9 [2024-10-23 21:02:35,054 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:02:35,054 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:02:35,054 INFO L85 PathProgramCache]: Analyzing trace with hash 334582650, now seen corresponding path program 1 times [2024-10-23 21:02:35,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:02:35,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879660756] [2024-10-23 21:02:35,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:02:35,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:02:35,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:02:35,416 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 367 proven. 0 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2024-10-23 21:02:35,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:02:35,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879660756] [2024-10-23 21:02:35,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [879660756] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:02:35,417 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:02:35,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:02:35,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921356063] [2024-10-23 21:02:35,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:02:35,418 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:02:35,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:02:35,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:02:35,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:02:35,419 INFO L87 Difference]: Start difference. First operand 10942 states and 13002 transitions. Second operand has 3 states, 3 states have (on average 98.66666666666667) internal successors, (296), 3 states have internal predecessors, (296), 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) [2024-10-23 21:02:36,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:02:36,110 INFO L93 Difference]: Finished difference Result 27056 states and 32310 transitions. [2024-10-23 21:02:36,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:02:36,111 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 98.66666666666667) internal successors, (296), 3 states have internal predecessors, (296), 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 348 [2024-10-23 21:02:36,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:02:36,143 INFO L225 Difference]: With dead ends: 27056 [2024-10-23 21:02:36,143 INFO L226 Difference]: Without dead ends: 16851 [2024-10-23 21:02:36,158 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 [2024-10-23 21:02:36,159 INFO L432 NwaCegarLoop]: 118 mSDtfsCounter, 138 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 595 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 672 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 595 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-23 21:02:36,159 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [138 Valid, 139 Invalid, 672 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 595 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-23 21:02:36,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16851 states. [2024-10-23 21:02:36,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16851 to 16847. [2024-10-23 21:02:36,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16847 states, 16846 states have (on average 1.1673987890300368) internal successors, (19666), 16846 states have internal predecessors, (19666), 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) [2024-10-23 21:02:36,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16847 states to 16847 states and 19666 transitions. [2024-10-23 21:02:36,559 INFO L78 Accepts]: Start accepts. Automaton has 16847 states and 19666 transitions. Word has length 348 [2024-10-23 21:02:36,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:02:36,560 INFO L471 AbstractCegarLoop]: Abstraction has 16847 states and 19666 transitions. [2024-10-23 21:02:36,560 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 98.66666666666667) internal successors, (296), 3 states have internal predecessors, (296), 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) [2024-10-23 21:02:36,560 INFO L276 IsEmpty]: Start isEmpty. Operand 16847 states and 19666 transitions. [2024-10-23 21:02:36,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 357 [2024-10-23 21:02:36,580 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:02:36,581 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:02:36,581 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-23 21:02:36,581 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:02:36,581 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:02:36,582 INFO L85 PathProgramCache]: Analyzing trace with hash -88118321, now seen corresponding path program 1 times [2024-10-23 21:02:36,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:02:36,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341536618] [2024-10-23 21:02:36,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:02:36,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:02:36,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:02:36,985 INFO L134 CoverageAnalysis]: Checked inductivity of 229 backedges. 229 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 21:02:36,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:02:36,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341536618] [2024-10-23 21:02:36,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [341536618] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:02:36,986 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:02:36,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:02:36,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9073851] [2024-10-23 21:02:36,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:02:36,987 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:02:36,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:02:36,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:02:36,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:02:36,989 INFO L87 Difference]: Start difference. First operand 16847 states and 19666 transitions. Second operand has 3 states, 3 states have (on average 118.66666666666667) internal successors, (356), 3 states have internal predecessors, (356), 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) [2024-10-23 21:02:37,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:02:37,855 INFO L93 Difference]: Finished difference Result 35909 states and 41956 transitions. [2024-10-23 21:02:37,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:02:37,856 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 118.66666666666667) internal successors, (356), 3 states have internal predecessors, (356), 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 356 [2024-10-23 21:02:37,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:02:37,897 INFO L225 Difference]: With dead ends: 35909 [2024-10-23 21:02:37,897 INFO L226 Difference]: Without dead ends: 20167 [2024-10-23 21:02:37,916 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 [2024-10-23 21:02:37,917 INFO L432 NwaCegarLoop]: 65 mSDtfsCounter, 57 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 549 mSolverCounterSat, 142 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 691 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 142 IncrementalHoareTripleChecker+Valid, 549 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-23 21:02:37,917 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 73 Invalid, 691 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [142 Valid, 549 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-23 21:02:37,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20167 states. [2024-10-23 21:02:38,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20167 to 20159. [2024-10-23 21:02:38,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20159 states, 20158 states have (on average 1.1559678539537652) internal successors, (23302), 20158 states have internal predecessors, (23302), 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) [2024-10-23 21:02:38,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20159 states to 20159 states and 23302 transitions. [2024-10-23 21:02:38,181 INFO L78 Accepts]: Start accepts. Automaton has 20159 states and 23302 transitions. Word has length 356 [2024-10-23 21:02:38,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:02:38,182 INFO L471 AbstractCegarLoop]: Abstraction has 20159 states and 23302 transitions. [2024-10-23 21:02:38,183 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 118.66666666666667) internal successors, (356), 3 states have internal predecessors, (356), 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) [2024-10-23 21:02:38,183 INFO L276 IsEmpty]: Start isEmpty. Operand 20159 states and 23302 transitions. [2024-10-23 21:02:38,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 359 [2024-10-23 21:02:38,200 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:02:38,201 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 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] [2024-10-23 21:02:38,201 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-23 21:02:38,201 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:02:38,201 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:02:38,202 INFO L85 PathProgramCache]: Analyzing trace with hash 750913683, now seen corresponding path program 1 times [2024-10-23 21:02:38,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:02:38,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776336617] [2024-10-23 21:02:38,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:02:38,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:02:38,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:02:38,653 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 339 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2024-10-23 21:02:38,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:02:38,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776336617] [2024-10-23 21:02:38,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1776336617] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:02:38,657 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:02:38,657 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:02:38,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886917745] [2024-10-23 21:02:38,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:02:38,657 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-23 21:02:38,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:02:38,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-23 21:02:38,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-23 21:02:38,664 INFO L87 Difference]: Start difference. First operand 20159 states and 23302 transitions. Second operand has 4 states, 4 states have (on average 69.5) internal successors, (278), 3 states have internal predecessors, (278), 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) [2024-10-23 21:02:39,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:02:39,771 INFO L93 Difference]: Finished difference Result 44217 states and 51654 transitions. [2024-10-23 21:02:39,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-23 21:02:39,771 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 69.5) internal successors, (278), 3 states have internal predecessors, (278), 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 358 [2024-10-23 21:02:39,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:02:39,880 INFO L225 Difference]: With dead ends: 44217 [2024-10-23 21:02:39,880 INFO L226 Difference]: Without dead ends: 26085 [2024-10-23 21:02:39,891 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-23 21:02:39,892 INFO L432 NwaCegarLoop]: 63 mSDtfsCounter, 259 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 1093 mSolverCounterSat, 165 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 259 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 1258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 165 IncrementalHoareTripleChecker+Valid, 1093 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-10-23 21:02:39,892 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [259 Valid, 99 Invalid, 1258 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [165 Valid, 1093 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-10-23 21:02:39,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26085 states. [2024-10-23 21:02:40,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26085 to 22200. [2024-10-23 21:02:40,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22200 states, 22199 states have (on average 1.1554124059642326) internal successors, (25649), 22199 states have internal predecessors, (25649), 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) [2024-10-23 21:02:40,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22200 states to 22200 states and 25649 transitions. [2024-10-23 21:02:40,160 INFO L78 Accepts]: Start accepts. Automaton has 22200 states and 25649 transitions. Word has length 358 [2024-10-23 21:02:40,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:02:40,161 INFO L471 AbstractCegarLoop]: Abstraction has 22200 states and 25649 transitions. [2024-10-23 21:02:40,161 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 69.5) internal successors, (278), 3 states have internal predecessors, (278), 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) [2024-10-23 21:02:40,161 INFO L276 IsEmpty]: Start isEmpty. Operand 22200 states and 25649 transitions. [2024-10-23 21:02:40,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 360 [2024-10-23 21:02:40,175 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:02:40,175 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-10-23 21:02:40,175 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-10-23 21:02:40,176 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:02:40,176 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:02:40,176 INFO L85 PathProgramCache]: Analyzing trace with hash 895292363, now seen corresponding path program 1 times [2024-10-23 21:02:40,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:02:40,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907601865] [2024-10-23 21:02:40,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:02:40,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:02:40,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:02:41,123 INFO L134 CoverageAnalysis]: Checked inductivity of 247 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 142 trivial. 0 not checked. [2024-10-23 21:02:41,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:02:41,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [907601865] [2024-10-23 21:02:41,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [907601865] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 21:02:41,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [250280887] [2024-10-23 21:02:41,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:02:41,125 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 21:02:41,125 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 21:02:41,128 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) [2024-10-23 21:02:41,129 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-23 21:02:41,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:02:41,287 INFO L255 TraceCheckSpWp]: Trace formula consists of 468 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-23 21:02:41,295 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 21:02:42,003 INFO L134 CoverageAnalysis]: Checked inductivity of 247 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 142 trivial. 0 not checked. [2024-10-23 21:02:42,003 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-23 21:02:45,786 INFO L134 CoverageAnalysis]: Checked inductivity of 247 backedges. 105 proven. 0 refuted. 0 times theorem prover too weak. 142 trivial. 0 not checked. [2024-10-23 21:02:45,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [250280887] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-23 21:02:45,786 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-23 21:02:45,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 5 [2024-10-23 21:02:45,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895676680] [2024-10-23 21:02:45,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:02:45,787 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-23 21:02:45,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:02:45,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-23 21:02:45,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-10-23 21:02:45,788 INFO L87 Difference]: Start difference. First operand 22200 states and 25649 transitions. Second operand has 4 states, 4 states have (on average 54.5) internal successors, (218), 3 states have internal predecessors, (218), 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) [2024-10-23 21:02:47,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:02:47,013 INFO L93 Difference]: Finished difference Result 50702 states and 59094 transitions. [2024-10-23 21:02:47,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-23 21:02:47,014 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 54.5) internal successors, (218), 3 states have internal predecessors, (218), 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 359 [2024-10-23 21:02:47,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:02:47,056 INFO L225 Difference]: With dead ends: 50702 [2024-10-23 21:02:47,056 INFO L226 Difference]: Without dead ends: 30529 [2024-10-23 21:02:47,076 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 719 GetRequests, 715 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-10-23 21:02:47,077 INFO L432 NwaCegarLoop]: 131 mSDtfsCounter, 238 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 1086 mSolverCounterSat, 139 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 238 SdHoareTripleChecker+Valid, 201 SdHoareTripleChecker+Invalid, 1225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 139 IncrementalHoareTripleChecker+Valid, 1086 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-10-23 21:02:47,077 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [238 Valid, 201 Invalid, 1225 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [139 Valid, 1086 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-10-23 21:02:47,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30529 states. [2024-10-23 21:02:47,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30529 to 22752. [2024-10-23 21:02:47,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22752 states, 22751 states have (on average 1.1521251813107116) internal successors, (26212), 22751 states have internal predecessors, (26212), 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) [2024-10-23 21:02:47,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22752 states to 22752 states and 26212 transitions. [2024-10-23 21:02:47,513 INFO L78 Accepts]: Start accepts. Automaton has 22752 states and 26212 transitions. Word has length 359 [2024-10-23 21:02:47,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:02:47,514 INFO L471 AbstractCegarLoop]: Abstraction has 22752 states and 26212 transitions. [2024-10-23 21:02:47,514 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 54.5) internal successors, (218), 3 states have internal predecessors, (218), 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) [2024-10-23 21:02:47,514 INFO L276 IsEmpty]: Start isEmpty. Operand 22752 states and 26212 transitions. [2024-10-23 21:02:47,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 430 [2024-10-23 21:02:47,529 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:02:47,529 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 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, 1, 1] [2024-10-23 21:02:47,546 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-23 21:02:47,730 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 21:02:47,730 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:02:47,731 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:02:47,731 INFO L85 PathProgramCache]: Analyzing trace with hash 1855965577, now seen corresponding path program 1 times [2024-10-23 21:02:47,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:02:47,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168161038] [2024-10-23 21:02:47,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:02:47,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:02:47,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:02:48,217 INFO L134 CoverageAnalysis]: Checked inductivity of 670 backedges. 552 proven. 0 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2024-10-23 21:02:48,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:02:48,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168161038] [2024-10-23 21:02:48,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [168161038] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:02:48,218 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:02:48,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:02:48,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076696688] [2024-10-23 21:02:48,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:02:48,219 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:02:48,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:02:48,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:02:48,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:02:48,220 INFO L87 Difference]: Start difference. First operand 22752 states and 26212 transitions. Second operand has 3 states, 3 states have (on average 104.33333333333333) internal successors, (313), 3 states have internal predecessors, (313), 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) [2024-10-23 21:02:49,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:02:49,005 INFO L93 Difference]: Finished difference Result 44957 states and 51821 transitions. [2024-10-23 21:02:49,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:02:49,006 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 104.33333333333333) internal successors, (313), 3 states have internal predecessors, (313), 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 429 [2024-10-23 21:02:49,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:02:49,037 INFO L225 Difference]: With dead ends: 44957 [2024-10-23 21:02:49,037 INFO L226 Difference]: Without dead ends: 24232 [2024-10-23 21:02:49,055 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 [2024-10-23 21:02:49,056 INFO L432 NwaCegarLoop]: 122 mSDtfsCounter, 140 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 587 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 641 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 587 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-23 21:02:49,056 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [140 Valid, 142 Invalid, 641 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 587 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-23 21:02:49,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24232 states. [2024-10-23 21:02:49,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24232 to 22754. [2024-10-23 21:02:49,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22754 states, 22753 states have (on average 1.15184810794181) internal successors, (26208), 22753 states have internal predecessors, (26208), 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) [2024-10-23 21:02:49,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22754 states to 22754 states and 26208 transitions. [2024-10-23 21:02:49,447 INFO L78 Accepts]: Start accepts. Automaton has 22754 states and 26208 transitions. Word has length 429 [2024-10-23 21:02:49,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:02:49,448 INFO L471 AbstractCegarLoop]: Abstraction has 22754 states and 26208 transitions. [2024-10-23 21:02:49,448 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 104.33333333333333) internal successors, (313), 3 states have internal predecessors, (313), 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) [2024-10-23 21:02:49,448 INFO L276 IsEmpty]: Start isEmpty. Operand 22754 states and 26208 transitions. [2024-10-23 21:02:49,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 433 [2024-10-23 21:02:49,470 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:02:49,470 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 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, 1, 1] [2024-10-23 21:02:49,471 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-10-23 21:02:49,471 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:02:49,471 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:02:49,472 INFO L85 PathProgramCache]: Analyzing trace with hash -1515415118, now seen corresponding path program 1 times [2024-10-23 21:02:49,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:02:49,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768172602] [2024-10-23 21:02:49,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:02:49,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:02:49,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:02:49,877 INFO L134 CoverageAnalysis]: Checked inductivity of 677 backedges. 487 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2024-10-23 21:02:49,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:02:49,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [768172602] [2024-10-23 21:02:49,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [768172602] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:02:49,878 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:02:49,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:02:49,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444083034] [2024-10-23 21:02:49,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:02:49,879 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:02:49,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:02:49,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:02:49,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:02:49,881 INFO L87 Difference]: Start difference. First operand 22754 states and 26208 transitions. Second operand has 3 states, 3 states have (on average 99.0) internal successors, (297), 3 states have internal predecessors, (297), 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) [2024-10-23 21:02:50,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:02:50,567 INFO L93 Difference]: Finished difference Result 42205 states and 48740 transitions. [2024-10-23 21:02:50,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:02:50,567 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 99.0) internal successors, (297), 3 states have internal predecessors, (297), 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 432 [2024-10-23 21:02:50,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:02:50,587 INFO L225 Difference]: With dead ends: 42205 [2024-10-23 21:02:50,587 INFO L226 Difference]: Without dead ends: 21478 [2024-10-23 21:02:50,602 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 [2024-10-23 21:02:50,602 INFO L432 NwaCegarLoop]: 315 mSDtfsCounter, 137 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 548 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 331 SdHoareTripleChecker+Invalid, 640 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 548 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-23 21:02:50,603 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [137 Valid, 331 Invalid, 640 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 548 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-23 21:02:50,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21478 states. [2024-10-23 21:02:50,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21478 to 21460. [2024-10-23 21:02:50,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21460 states, 21459 states have (on average 1.1256815322242415) internal successors, (24156), 21459 states have internal predecessors, (24156), 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) [2024-10-23 21:02:50,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21460 states to 21460 states and 24156 transitions. [2024-10-23 21:02:50,925 INFO L78 Accepts]: Start accepts. Automaton has 21460 states and 24156 transitions. Word has length 432 [2024-10-23 21:02:50,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:02:50,925 INFO L471 AbstractCegarLoop]: Abstraction has 21460 states and 24156 transitions. [2024-10-23 21:02:50,926 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 99.0) internal successors, (297), 3 states have internal predecessors, (297), 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) [2024-10-23 21:02:50,926 INFO L276 IsEmpty]: Start isEmpty. Operand 21460 states and 24156 transitions. [2024-10-23 21:02:50,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 437 [2024-10-23 21:02:50,936 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:02:50,936 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1] [2024-10-23 21:02:50,936 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-10-23 21:02:50,936 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:02:50,937 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:02:50,937 INFO L85 PathProgramCache]: Analyzing trace with hash 236362662, now seen corresponding path program 1 times [2024-10-23 21:02:50,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:02:50,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209554275] [2024-10-23 21:02:50,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:02:50,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:02:51,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:02:51,173 INFO L134 CoverageAnalysis]: Checked inductivity of 481 backedges. 304 proven. 0 refuted. 0 times theorem prover too weak. 177 trivial. 0 not checked. [2024-10-23 21:02:51,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:02:51,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1209554275] [2024-10-23 21:02:51,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1209554275] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:02:51,173 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:02:51,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-23 21:02:51,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687215209] [2024-10-23 21:02:51,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:02:51,174 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:02:51,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:02:51,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:02:51,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:02:51,175 INFO L87 Difference]: Start difference. First operand 21460 states and 24156 transitions. Second operand has 3 states, 3 states have (on average 87.0) internal successors, (261), 2 states have internal predecessors, (261), 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) [2024-10-23 21:02:51,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:02:51,556 INFO L93 Difference]: Finished difference Result 40142 states and 45234 transitions. [2024-10-23 21:02:51,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:02:51,556 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 87.0) internal successors, (261), 2 states have internal predecessors, (261), 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 436 [2024-10-23 21:02:51,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:02:51,574 INFO L225 Difference]: With dead ends: 40142 [2024-10-23 21:02:51,574 INFO L226 Difference]: Without dead ends: 20709 [2024-10-23 21:02:51,588 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:02:51,589 INFO L432 NwaCegarLoop]: 38 mSDtfsCounter, 189 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 308 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 189 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 312 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 308 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-23 21:02:51,589 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [189 Valid, 38 Invalid, 312 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 308 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-23 21:02:51,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20709 states. [2024-10-23 21:02:51,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20709 to 20700. [2024-10-23 21:02:51,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20700 states, 20699 states have (on average 1.1238707183921928) internal successors, (23263), 20699 states have internal predecessors, (23263), 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) [2024-10-23 21:02:51,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20700 states to 20700 states and 23263 transitions. [2024-10-23 21:02:51,774 INFO L78 Accepts]: Start accepts. Automaton has 20700 states and 23263 transitions. Word has length 436 [2024-10-23 21:02:51,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:02:51,775 INFO L471 AbstractCegarLoop]: Abstraction has 20700 states and 23263 transitions. [2024-10-23 21:02:51,775 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 87.0) internal successors, (261), 2 states have internal predecessors, (261), 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) [2024-10-23 21:02:51,775 INFO L276 IsEmpty]: Start isEmpty. Operand 20700 states and 23263 transitions. [2024-10-23 21:02:51,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 453 [2024-10-23 21:02:51,783 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:02:51,784 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:02:51,784 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-10-23 21:02:51,784 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:02:51,784 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:02:51,784 INFO L85 PathProgramCache]: Analyzing trace with hash -10063876, now seen corresponding path program 1 times [2024-10-23 21:02:51,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:02:51,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978462219] [2024-10-23 21:02:51,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:02:51,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:02:51,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:02:51,999 INFO L134 CoverageAnalysis]: Checked inductivity of 481 backedges. 357 proven. 0 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2024-10-23 21:02:52,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:02:52,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1978462219] [2024-10-23 21:02:52,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1978462219] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:02:52,000 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:02:52,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:02:52,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841368459] [2024-10-23 21:02:52,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:02:52,001 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:02:52,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:02:52,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:02:52,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:02:52,002 INFO L87 Difference]: Start difference. First operand 20700 states and 23263 transitions. Second operand has 3 states, 3 states have (on average 109.66666666666667) internal successors, (329), 3 states have internal predecessors, (329), 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) [2024-10-23 21:02:52,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:02:52,537 INFO L93 Difference]: Finished difference Result 36033 states and 40328 transitions. [2024-10-23 21:02:52,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:02:52,538 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 109.66666666666667) internal successors, (329), 3 states have internal predecessors, (329), 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 452 [2024-10-23 21:02:52,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:02:52,554 INFO L225 Difference]: With dead ends: 36033 [2024-10-23 21:02:52,554 INFO L226 Difference]: Without dead ends: 17174 [2024-10-23 21:02:52,564 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 [2024-10-23 21:02:52,565 INFO L432 NwaCegarLoop]: 113 mSDtfsCounter, 134 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 449 mSolverCounterSat, 119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 568 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 449 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-23 21:02:52,565 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 133 Invalid, 568 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [119 Valid, 449 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-23 21:02:52,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17174 states. [2024-10-23 21:02:52,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17174 to 16990. [2024-10-23 21:02:52,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16990 states, 16989 states have (on average 1.1065983871917122) internal successors, (18800), 16989 states have internal predecessors, (18800), 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) [2024-10-23 21:02:52,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16990 states to 16990 states and 18800 transitions. [2024-10-23 21:02:52,808 INFO L78 Accepts]: Start accepts. Automaton has 16990 states and 18800 transitions. Word has length 452 [2024-10-23 21:02:52,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:02:52,808 INFO L471 AbstractCegarLoop]: Abstraction has 16990 states and 18800 transitions. [2024-10-23 21:02:52,808 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 109.66666666666667) internal successors, (329), 3 states have internal predecessors, (329), 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) [2024-10-23 21:02:52,808 INFO L276 IsEmpty]: Start isEmpty. Operand 16990 states and 18800 transitions. [2024-10-23 21:02:52,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 491 [2024-10-23 21:02:52,820 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:02:52,820 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:02:52,821 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-10-23 21:02:52,821 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:02:52,821 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:02:52,821 INFO L85 PathProgramCache]: Analyzing trace with hash 1680575125, now seen corresponding path program 1 times [2024-10-23 21:02:52,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:02:52,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297717310] [2024-10-23 21:02:52,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:02:52,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:02:52,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:02:53,436 INFO L134 CoverageAnalysis]: Checked inductivity of 540 backedges. 416 proven. 0 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2024-10-23 21:02:53,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:02:53,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297717310] [2024-10-23 21:02:53,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [297717310] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:02:53,437 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:02:53,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-23 21:02:53,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141212509] [2024-10-23 21:02:53,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:02:53,438 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-23 21:02:53,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:02:53,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-23 21:02:53,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-23 21:02:53,439 INFO L87 Difference]: Start difference. First operand 16990 states and 18800 transitions. Second operand has 5 states, 5 states have (on average 73.4) internal successors, (367), 4 states have internal predecessors, (367), 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) [2024-10-23 21:02:54,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:02:54,316 INFO L93 Difference]: Finished difference Result 32216 states and 35693 transitions. [2024-10-23 21:02:54,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-23 21:02:54,316 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 73.4) internal successors, (367), 4 states have internal predecessors, (367), 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 490 [2024-10-23 21:02:54,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:02:54,338 INFO L225 Difference]: With dead ends: 32216 [2024-10-23 21:02:54,338 INFO L226 Difference]: Without dead ends: 17253 [2024-10-23 21:02:54,349 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-10-23 21:02:54,350 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 267 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 1246 mSolverCounterSat, 132 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 267 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 1378 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 132 IncrementalHoareTripleChecker+Valid, 1246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-10-23 21:02:54,350 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [267 Valid, 52 Invalid, 1378 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [132 Valid, 1246 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-10-23 21:02:54,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17253 states. [2024-10-23 21:02:54,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17253 to 17175. [2024-10-23 21:02:54,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17175 states, 17174 states have (on average 1.1051007336671712) internal successors, (18979), 17174 states have internal predecessors, (18979), 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) [2024-10-23 21:02:54,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17175 states to 17175 states and 18979 transitions. [2024-10-23 21:02:54,489 INFO L78 Accepts]: Start accepts. Automaton has 17175 states and 18979 transitions. Word has length 490 [2024-10-23 21:02:54,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:02:54,490 INFO L471 AbstractCegarLoop]: Abstraction has 17175 states and 18979 transitions. [2024-10-23 21:02:54,490 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 73.4) internal successors, (367), 4 states have internal predecessors, (367), 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) [2024-10-23 21:02:54,490 INFO L276 IsEmpty]: Start isEmpty. Operand 17175 states and 18979 transitions. [2024-10-23 21:02:54,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 513 [2024-10-23 21:02:54,501 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:02:54,502 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:02:54,502 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-10-23 21:02:54,502 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:02:54,502 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:02:54,502 INFO L85 PathProgramCache]: Analyzing trace with hash 1024549485, now seen corresponding path program 1 times [2024-10-23 21:02:54,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:02:54,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088415522] [2024-10-23 21:02:54,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:02:54,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:02:54,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:02:54,822 INFO L134 CoverageAnalysis]: Checked inductivity of 841 backedges. 685 proven. 0 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2024-10-23 21:02:54,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:02:54,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088415522] [2024-10-23 21:02:54,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1088415522] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:02:54,823 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:02:54,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:02:54,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921588513] [2024-10-23 21:02:54,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:02:54,823 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:02:54,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:02:54,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:02:54,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:02:54,825 INFO L87 Difference]: Start difference. First operand 17175 states and 18979 transitions. Second operand has 3 states, 3 states have (on average 119.33333333333333) internal successors, (358), 3 states have internal predecessors, (358), 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) [2024-10-23 21:02:55,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:02:55,381 INFO L93 Difference]: Finished difference Result 34901 states and 38587 transitions. [2024-10-23 21:02:55,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:02:55,382 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 119.33333333333333) internal successors, (358), 3 states have internal predecessors, (358), 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 512 [2024-10-23 21:02:55,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:02:55,400 INFO L225 Difference]: With dead ends: 34901 [2024-10-23 21:02:55,400 INFO L226 Difference]: Without dead ends: 18831 [2024-10-23 21:02:55,412 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 [2024-10-23 21:02:55,412 INFO L432 NwaCegarLoop]: 342 mSDtfsCounter, 63 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 515 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 365 SdHoareTripleChecker+Invalid, 540 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 515 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-23 21:02:55,413 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 365 Invalid, 540 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 515 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-23 21:02:55,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18831 states. [2024-10-23 21:02:55,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18831 to 17911. [2024-10-23 21:02:55,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17911 states, 17910 states have (on average 1.102791736460078) internal successors, (19751), 17910 states have internal predecessors, (19751), 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) [2024-10-23 21:02:55,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17911 states to 17911 states and 19751 transitions. [2024-10-23 21:02:55,573 INFO L78 Accepts]: Start accepts. Automaton has 17911 states and 19751 transitions. Word has length 512 [2024-10-23 21:02:55,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:02:55,573 INFO L471 AbstractCegarLoop]: Abstraction has 17911 states and 19751 transitions. [2024-10-23 21:02:55,573 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 119.33333333333333) internal successors, (358), 3 states have internal predecessors, (358), 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) [2024-10-23 21:02:55,573 INFO L276 IsEmpty]: Start isEmpty. Operand 17911 states and 19751 transitions. [2024-10-23 21:02:55,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 545 [2024-10-23 21:02:55,589 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:02:55,589 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-10-23 21:02:55,589 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-10-23 21:02:55,589 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:02:55,589 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:02:55,590 INFO L85 PathProgramCache]: Analyzing trace with hash 26251403, now seen corresponding path program 1 times [2024-10-23 21:02:55,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:02:55,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [976598670] [2024-10-23 21:02:55,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:02:55,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:02:55,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:02:56,009 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 470 proven. 0 refuted. 0 times theorem prover too weak. 142 trivial. 0 not checked. [2024-10-23 21:02:56,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:02:56,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [976598670] [2024-10-23 21:02:56,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [976598670] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:02:56,010 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:02:56,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:02:56,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202618494] [2024-10-23 21:02:56,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:02:56,011 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:02:56,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:02:56,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:02:56,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:02:56,012 INFO L87 Difference]: Start difference. First operand 17911 states and 19751 transitions. Second operand has 3 states, 3 states have (on average 134.33333333333334) internal successors, (403), 3 states have internal predecessors, (403), 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) [2024-10-23 21:02:56,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:02:56,705 INFO L93 Difference]: Finished difference Result 37481 states and 41347 transitions. [2024-10-23 21:02:56,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:02:56,706 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 134.33333333333334) internal successors, (403), 3 states have internal predecessors, (403), 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 544 [2024-10-23 21:02:56,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:02:56,724 INFO L225 Difference]: With dead ends: 37481 [2024-10-23 21:02:56,724 INFO L226 Difference]: Without dead ends: 20675 [2024-10-23 21:02:56,735 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 [2024-10-23 21:02:56,736 INFO L432 NwaCegarLoop]: 56 mSDtfsCounter, 54 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 532 mSolverCounterSat, 133 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 665 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 133 IncrementalHoareTripleChecker+Valid, 532 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-23 21:02:56,736 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 62 Invalid, 665 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [133 Valid, 532 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-23 21:02:56,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20675 states. [2024-10-23 21:02:56,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20675 to 18095. [2024-10-23 21:02:56,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18095 states, 18094 states have (on average 1.1020780369183154) internal successors, (19941), 18094 states have internal predecessors, (19941), 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) [2024-10-23 21:02:57,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18095 states to 18095 states and 19941 transitions. [2024-10-23 21:02:57,017 INFO L78 Accepts]: Start accepts. Automaton has 18095 states and 19941 transitions. Word has length 544 [2024-10-23 21:02:57,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:02:57,018 INFO L471 AbstractCegarLoop]: Abstraction has 18095 states and 19941 transitions. [2024-10-23 21:02:57,018 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 134.33333333333334) internal successors, (403), 3 states have internal predecessors, (403), 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) [2024-10-23 21:02:57,018 INFO L276 IsEmpty]: Start isEmpty. Operand 18095 states and 19941 transitions. [2024-10-23 21:02:57,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 555 [2024-10-23 21:02:57,035 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:02:57,035 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:02:57,035 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-10-23 21:02:57,036 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:02:57,036 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:02:57,036 INFO L85 PathProgramCache]: Analyzing trace with hash 773284934, now seen corresponding path program 1 times [2024-10-23 21:02:57,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:02:57,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613700368] [2024-10-23 21:02:57,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:02:57,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:02:57,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:02:58,316 INFO L134 CoverageAnalysis]: Checked inductivity of 859 backedges. 653 proven. 0 refuted. 0 times theorem prover too weak. 206 trivial. 0 not checked. [2024-10-23 21:02:58,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:02:58,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1613700368] [2024-10-23 21:02:58,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1613700368] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:02:58,316 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:02:58,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-23 21:02:58,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448398259] [2024-10-23 21:02:58,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:02:58,318 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-23 21:02:58,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:02:58,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-23 21:02:58,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-10-23 21:02:58,319 INFO L87 Difference]: Start difference. First operand 18095 states and 19941 transitions. Second operand has 7 states, 7 states have (on average 57.57142857142857) internal successors, (403), 6 states have internal predecessors, (403), 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) [2024-10-23 21:02:59,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:02:59,649 INFO L93 Difference]: Finished difference Result 36746 states and 40474 transitions. [2024-10-23 21:02:59,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-23 21:02:59,649 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 57.57142857142857) internal successors, (403), 6 states have internal predecessors, (403), 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 554 [2024-10-23 21:02:59,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:02:59,670 INFO L225 Difference]: With dead ends: 36746 [2024-10-23 21:02:59,671 INFO L226 Difference]: Without dead ends: 21046 [2024-10-23 21:02:59,681 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2024-10-23 21:02:59,682 INFO L432 NwaCegarLoop]: 110 mSDtfsCounter, 214 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 2416 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 214 SdHoareTripleChecker+Valid, 219 SdHoareTripleChecker+Invalid, 2445 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 2416 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-10-23 21:02:59,682 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [214 Valid, 219 Invalid, 2445 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 2416 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-10-23 21:02:59,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21046 states. [2024-10-23 21:02:59,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21046 to 18647. [2024-10-23 21:02:59,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18647 states, 18646 states have (on average 1.1025957309878793) internal successors, (20559), 18646 states have internal predecessors, (20559), 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) [2024-10-23 21:02:59,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18647 states to 18647 states and 20559 transitions. [2024-10-23 21:02:59,932 INFO L78 Accepts]: Start accepts. Automaton has 18647 states and 20559 transitions. Word has length 554 [2024-10-23 21:02:59,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:02:59,933 INFO L471 AbstractCegarLoop]: Abstraction has 18647 states and 20559 transitions. [2024-10-23 21:02:59,933 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 57.57142857142857) internal successors, (403), 6 states have internal predecessors, (403), 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) [2024-10-23 21:02:59,933 INFO L276 IsEmpty]: Start isEmpty. Operand 18647 states and 20559 transitions. [2024-10-23 21:02:59,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 565 [2024-10-23 21:02:59,947 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:02:59,947 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-10-23 21:02:59,947 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-10-23 21:02:59,947 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:02:59,948 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:02:59,948 INFO L85 PathProgramCache]: Analyzing trace with hash 896459167, now seen corresponding path program 1 times [2024-10-23 21:02:59,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:02:59,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979589188] [2024-10-23 21:02:59,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:02:59,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:03:00,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:03:01,017 INFO L134 CoverageAnalysis]: Checked inductivity of 879 backedges. 665 proven. 8 refuted. 0 times theorem prover too weak. 206 trivial. 0 not checked. [2024-10-23 21:03:01,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:03:01,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979589188] [2024-10-23 21:03:01,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [979589188] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 21:03:01,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1709451638] [2024-10-23 21:03:01,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:03:01,019 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 21:03:01,019 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 21:03:01,021 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) [2024-10-23 21:03:01,023 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-23 21:03:01,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:03:01,176 INFO L255 TraceCheckSpWp]: Trace formula consists of 727 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-23 21:03:01,182 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 21:03:02,130 INFO L134 CoverageAnalysis]: Checked inductivity of 879 backedges. 552 proven. 121 refuted. 0 times theorem prover too weak. 206 trivial. 0 not checked. [2024-10-23 21:03:02,131 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-23 21:03:04,640 INFO L134 CoverageAnalysis]: Checked inductivity of 879 backedges. 552 proven. 121 refuted. 0 times theorem prover too weak. 206 trivial. 0 not checked. [2024-10-23 21:03:04,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1709451638] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-23 21:03:04,641 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-23 21:03:04,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 3, 3] total 10 [2024-10-23 21:03:04,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736438759] [2024-10-23 21:03:04,642 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-23 21:03:04,642 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-23 21:03:04,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:03:04,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-23 21:03:04,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-10-23 21:03:04,644 INFO L87 Difference]: Start difference. First operand 18647 states and 20559 transitions. Second operand has 11 states, 11 states have (on average 89.0) internal successors, (979), 10 states have internal predecessors, (979), 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) [2024-10-23 21:03:08,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:03:08,356 INFO L93 Difference]: Finished difference Result 40614 states and 44663 transitions. [2024-10-23 21:03:08,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-10-23 21:03:08,356 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 89.0) internal successors, (979), 10 states have internal predecessors, (979), 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 564 [2024-10-23 21:03:08,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:03:08,378 INFO L225 Difference]: With dead ends: 40614 [2024-10-23 21:03:08,378 INFO L226 Difference]: Without dead ends: 23994 [2024-10-23 21:03:08,390 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1149 GetRequests, 1124 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=227, Invalid=475, Unknown=0, NotChecked=0, Total=702 [2024-10-23 21:03:08,390 INFO L432 NwaCegarLoop]: 39 mSDtfsCounter, 1391 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 4438 mSolverCounterSat, 517 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1391 SdHoareTripleChecker+Valid, 165 SdHoareTripleChecker+Invalid, 4955 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 517 IncrementalHoareTripleChecker+Valid, 4438 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2024-10-23 21:03:08,391 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1391 Valid, 165 Invalid, 4955 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [517 Valid, 4438 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2024-10-23 21:03:08,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23994 states. [2024-10-23 21:03:08,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23994 to 14779. [2024-10-23 21:03:08,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14779 states, 14778 states have (on average 1.0763296792529435) internal successors, (15906), 14778 states have internal predecessors, (15906), 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) [2024-10-23 21:03:08,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14779 states to 14779 states and 15906 transitions. [2024-10-23 21:03:08,638 INFO L78 Accepts]: Start accepts. Automaton has 14779 states and 15906 transitions. Word has length 564 [2024-10-23 21:03:08,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:03:08,638 INFO L471 AbstractCegarLoop]: Abstraction has 14779 states and 15906 transitions. [2024-10-23 21:03:08,639 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 89.0) internal successors, (979), 10 states have internal predecessors, (979), 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) [2024-10-23 21:03:08,639 INFO L276 IsEmpty]: Start isEmpty. Operand 14779 states and 15906 transitions. [2024-10-23 21:03:08,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 589 [2024-10-23 21:03:08,650 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:03:08,650 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:03:08,663 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-10-23 21:03:08,850 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 21:03:08,851 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:03:08,851 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:03:08,851 INFO L85 PathProgramCache]: Analyzing trace with hash 542889811, now seen corresponding path program 1 times [2024-10-23 21:03:08,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:03:08,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433010073] [2024-10-23 21:03:08,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:03:08,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:03:08,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:03:09,369 INFO L134 CoverageAnalysis]: Checked inductivity of 885 backedges. 679 proven. 0 refuted. 0 times theorem prover too weak. 206 trivial. 0 not checked. [2024-10-23 21:03:09,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:03:09,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433010073] [2024-10-23 21:03:09,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [433010073] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:03:09,370 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:03:09,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:03:09,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50888563] [2024-10-23 21:03:09,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:03:09,370 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-23 21:03:09,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:03:09,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-23 21:03:09,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-23 21:03:09,372 INFO L87 Difference]: Start difference. First operand 14779 states and 15906 transitions. Second operand has 4 states, 4 states have (on average 109.25) internal successors, (437), 3 states have internal predecessors, (437), 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) [2024-10-23 21:03:10,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:03:10,419 INFO L93 Difference]: Finished difference Result 32136 states and 34607 transitions. [2024-10-23 21:03:10,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-23 21:03:10,420 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 109.25) internal successors, (437), 3 states have internal predecessors, (437), 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 588 [2024-10-23 21:03:10,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:03:10,437 INFO L225 Difference]: With dead ends: 32136 [2024-10-23 21:03:10,438 INFO L226 Difference]: Without dead ends: 17726 [2024-10-23 21:03:10,448 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-23 21:03:10,449 INFO L432 NwaCegarLoop]: 84 mSDtfsCounter, 102 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 971 mSolverCounterSat, 178 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 1149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 178 IncrementalHoareTripleChecker+Valid, 971 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-10-23 21:03:10,449 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 115 Invalid, 1149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [178 Valid, 971 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-10-23 21:03:10,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17726 states. [2024-10-23 21:03:10,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17726 to 17354. [2024-10-23 21:03:10,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17354 states, 17353 states have (on average 1.066904857949634) internal successors, (18514), 17353 states have internal predecessors, (18514), 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) [2024-10-23 21:03:10,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17354 states to 17354 states and 18514 transitions. [2024-10-23 21:03:10,618 INFO L78 Accepts]: Start accepts. Automaton has 17354 states and 18514 transitions. Word has length 588 [2024-10-23 21:03:10,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:03:10,618 INFO L471 AbstractCegarLoop]: Abstraction has 17354 states and 18514 transitions. [2024-10-23 21:03:10,618 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 109.25) internal successors, (437), 3 states have internal predecessors, (437), 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) [2024-10-23 21:03:10,619 INFO L276 IsEmpty]: Start isEmpty. Operand 17354 states and 18514 transitions. [2024-10-23 21:03:10,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 607 [2024-10-23 21:03:10,631 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:03:10,631 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-10-23 21:03:10,631 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-10-23 21:03:10,631 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:03:10,632 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:03:10,632 INFO L85 PathProgramCache]: Analyzing trace with hash -1171081188, now seen corresponding path program 1 times [2024-10-23 21:03:10,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:03:10,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637456820] [2024-10-23 21:03:10,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:03:10,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:03:10,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:03:11,238 INFO L134 CoverageAnalysis]: Checked inductivity of 1255 backedges. 1049 proven. 0 refuted. 0 times theorem prover too weak. 206 trivial. 0 not checked. [2024-10-23 21:03:11,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:03:11,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [637456820] [2024-10-23 21:03:11,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [637456820] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:03:11,239 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:03:11,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-23 21:03:11,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311191798] [2024-10-23 21:03:11,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:03:11,240 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-23 21:03:11,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:03:11,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-23 21:03:11,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-23 21:03:11,241 INFO L87 Difference]: Start difference. First operand 17354 states and 18514 transitions. Second operand has 4 states, 4 states have (on average 113.75) internal successors, (455), 4 states have internal predecessors, (455), 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) [2024-10-23 21:03:12,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:03:12,175 INFO L93 Difference]: Finished difference Result 34899 states and 37306 transitions. [2024-10-23 21:03:12,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-23 21:03:12,176 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 113.75) internal successors, (455), 4 states have internal predecessors, (455), 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 606 [2024-10-23 21:03:12,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:03:12,194 INFO L225 Difference]: With dead ends: 34899 [2024-10-23 21:03:12,195 INFO L226 Difference]: Without dead ends: 19942 [2024-10-23 21:03:12,205 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-23 21:03:12,206 INFO L432 NwaCegarLoop]: 94 mSDtfsCounter, 208 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 1120 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 208 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 1199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 1120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-10-23 21:03:12,206 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [208 Valid, 133 Invalid, 1199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 1120 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-10-23 21:03:12,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19942 states. [2024-10-23 21:03:12,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19942 to 18459. [2024-10-23 21:03:12,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18459 states, 18458 states have (on average 1.0635496803554014) internal successors, (19631), 18458 states have internal predecessors, (19631), 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) [2024-10-23 21:03:12,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18459 states to 18459 states and 19631 transitions. [2024-10-23 21:03:12,394 INFO L78 Accepts]: Start accepts. Automaton has 18459 states and 19631 transitions. Word has length 606 [2024-10-23 21:03:12,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:03:12,394 INFO L471 AbstractCegarLoop]: Abstraction has 18459 states and 19631 transitions. [2024-10-23 21:03:12,395 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 113.75) internal successors, (455), 4 states have internal predecessors, (455), 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) [2024-10-23 21:03:12,395 INFO L276 IsEmpty]: Start isEmpty. Operand 18459 states and 19631 transitions. [2024-10-23 21:03:12,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 748 [2024-10-23 21:03:12,408 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:03:12,408 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2024-10-23 21:03:12,408 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-10-23 21:03:12,408 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:03:12,408 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:03:12,409 INFO L85 PathProgramCache]: Analyzing trace with hash -594000565, now seen corresponding path program 1 times [2024-10-23 21:03:12,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:03:12,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851896175] [2024-10-23 21:03:12,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:03:12,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:03:12,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:03:14,339 INFO L134 CoverageAnalysis]: Checked inductivity of 1953 backedges. 834 proven. 931 refuted. 0 times theorem prover too weak. 188 trivial. 0 not checked. [2024-10-23 21:03:14,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:03:14,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851896175] [2024-10-23 21:03:14,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [851896175] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 21:03:14,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [867731560] [2024-10-23 21:03:14,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:03:14,340 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 21:03:14,340 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 21:03:14,342 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) [2024-10-23 21:03:14,343 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-23 21:03:14,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:03:14,581 INFO L255 TraceCheckSpWp]: Trace formula consists of 966 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-23 21:03:14,590 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 21:03:14,879 INFO L134 CoverageAnalysis]: Checked inductivity of 1953 backedges. 816 proven. 0 refuted. 0 times theorem prover too weak. 1137 trivial. 0 not checked. [2024-10-23 21:03:14,880 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-23 21:03:14,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [867731560] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:03:14,880 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-23 21:03:14,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2024-10-23 21:03:14,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674851775] [2024-10-23 21:03:14,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:03:14,881 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:03:14,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:03:14,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:03:14,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-10-23 21:03:14,882 INFO L87 Difference]: Start difference. First operand 18459 states and 19631 transitions. Second operand has 3 states, 3 states have (on average 95.0) internal successors, (285), 3 states have internal predecessors, (285), 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) [2024-10-23 21:03:15,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:03:15,521 INFO L93 Difference]: Finished difference Result 35446 states and 37751 transitions. [2024-10-23 21:03:15,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:03:15,521 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 95.0) internal successors, (285), 3 states have internal predecessors, (285), 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 747 [2024-10-23 21:03:15,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:03:15,539 INFO L225 Difference]: With dead ends: 35446 [2024-10-23 21:03:15,539 INFO L226 Difference]: Without dead ends: 19384 [2024-10-23 21:03:15,548 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 754 GetRequests, 748 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-10-23 21:03:15,548 INFO L432 NwaCegarLoop]: 328 mSDtfsCounter, 88 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 526 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 345 SdHoareTripleChecker+Invalid, 562 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 526 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-23 21:03:15,549 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 345 Invalid, 562 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 526 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-23 21:03:15,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19384 states. [2024-10-23 21:03:15,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19384 to 19011. [2024-10-23 21:03:15,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19011 states, 19010 states have (on average 1.0602314571278275) internal successors, (20155), 19010 states have internal predecessors, (20155), 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) [2024-10-23 21:03:15,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19011 states to 19011 states and 20155 transitions. [2024-10-23 21:03:15,725 INFO L78 Accepts]: Start accepts. Automaton has 19011 states and 20155 transitions. Word has length 747 [2024-10-23 21:03:15,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:03:15,725 INFO L471 AbstractCegarLoop]: Abstraction has 19011 states and 20155 transitions. [2024-10-23 21:03:15,725 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 95.0) internal successors, (285), 3 states have internal predecessors, (285), 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) [2024-10-23 21:03:15,725 INFO L276 IsEmpty]: Start isEmpty. Operand 19011 states and 20155 transitions. [2024-10-23 21:03:15,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 760 [2024-10-23 21:03:15,738 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:03:15,738 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-10-23 21:03:15,751 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-10-23 21:03:15,939 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-10-23 21:03:15,939 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:03:15,940 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:03:15,940 INFO L85 PathProgramCache]: Analyzing trace with hash -1481400515, now seen corresponding path program 1 times [2024-10-23 21:03:15,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:03:15,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1794840451] [2024-10-23 21:03:15,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:03:15,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:03:16,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:03:16,706 INFO L134 CoverageAnalysis]: Checked inductivity of 1825 backedges. 798 proven. 0 refuted. 0 times theorem prover too weak. 1027 trivial. 0 not checked. [2024-10-23 21:03:16,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:03:16,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1794840451] [2024-10-23 21:03:16,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1794840451] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:03:16,707 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:03:16,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:03:16,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951039447] [2024-10-23 21:03:16,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:03:16,708 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:03:16,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:03:16,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:03:16,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:03:16,710 INFO L87 Difference]: Start difference. First operand 19011 states and 20155 transitions. Second operand has 3 states, 3 states have (on average 106.0) internal successors, (318), 3 states have internal predecessors, (318), 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) [2024-10-23 21:03:17,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:03:17,277 INFO L93 Difference]: Finished difference Result 36550 states and 38799 transitions. [2024-10-23 21:03:17,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:03:17,278 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 106.0) internal successors, (318), 3 states have internal predecessors, (318), 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 759 [2024-10-23 21:03:17,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:03:17,296 INFO L225 Difference]: With dead ends: 36550 [2024-10-23 21:03:17,296 INFO L226 Difference]: Without dead ends: 19936 [2024-10-23 21:03:17,305 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 [2024-10-23 21:03:17,305 INFO L432 NwaCegarLoop]: 138 mSDtfsCounter, 88 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 514 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 543 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 514 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-23 21:03:17,306 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 155 Invalid, 543 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 514 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-23 21:03:17,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19936 states. [2024-10-23 21:03:17,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19936 to 18643. [2024-10-23 21:03:17,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18643 states, 18642 states have (on average 1.0604548868147194) internal successors, (19769), 18642 states have internal predecessors, (19769), 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) [2024-10-23 21:03:17,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18643 states to 18643 states and 19769 transitions. [2024-10-23 21:03:17,469 INFO L78 Accepts]: Start accepts. Automaton has 18643 states and 19769 transitions. Word has length 759 [2024-10-23 21:03:17,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:03:17,470 INFO L471 AbstractCegarLoop]: Abstraction has 18643 states and 19769 transitions. [2024-10-23 21:03:17,470 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 106.0) internal successors, (318), 3 states have internal predecessors, (318), 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) [2024-10-23 21:03:17,470 INFO L276 IsEmpty]: Start isEmpty. Operand 18643 states and 19769 transitions. [2024-10-23 21:03:17,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 761 [2024-10-23 21:03:17,483 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:03:17,483 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-10-23 21:03:17,483 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-10-23 21:03:17,484 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:03:17,484 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:03:17,484 INFO L85 PathProgramCache]: Analyzing trace with hash -856790792, now seen corresponding path program 1 times [2024-10-23 21:03:17,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:03:17,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264610787] [2024-10-23 21:03:17,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:03:17,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:03:17,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:03:18,103 INFO L134 CoverageAnalysis]: Checked inductivity of 1824 backedges. 798 proven. 0 refuted. 0 times theorem prover too weak. 1026 trivial. 0 not checked. [2024-10-23 21:03:18,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:03:18,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264610787] [2024-10-23 21:03:18,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [264610787] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:03:18,103 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:03:18,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-23 21:03:18,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115776928] [2024-10-23 21:03:18,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:03:18,104 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-23 21:03:18,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:03:18,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-23 21:03:18,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-23 21:03:18,105 INFO L87 Difference]: Start difference. First operand 18643 states and 19769 transitions. Second operand has 4 states, 4 states have (on average 80.0) internal successors, (320), 4 states have internal predecessors, (320), 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) [2024-10-23 21:03:18,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:03:18,881 INFO L93 Difference]: Finished difference Result 35253 states and 37411 transitions. [2024-10-23 21:03:18,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-23 21:03:18,882 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 80.0) internal successors, (320), 4 states have internal predecessors, (320), 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 760 [2024-10-23 21:03:18,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:03:18,906 INFO L225 Difference]: With dead ends: 35253 [2024-10-23 21:03:18,906 INFO L226 Difference]: Without dead ends: 18639 [2024-10-23 21:03:18,917 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-23 21:03:18,917 INFO L432 NwaCegarLoop]: 111 mSDtfsCounter, 286 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 898 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 286 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 959 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 898 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-23 21:03:18,918 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [286 Valid, 133 Invalid, 959 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 898 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-23 21:03:18,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18639 states. [2024-10-23 21:03:19,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18639 to 16980. [2024-10-23 21:03:19,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16980 states, 16979 states have (on average 1.0581306319571235) internal successors, (17966), 16979 states have internal predecessors, (17966), 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) [2024-10-23 21:03:19,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16980 states to 16980 states and 17966 transitions. [2024-10-23 21:03:19,084 INFO L78 Accepts]: Start accepts. Automaton has 16980 states and 17966 transitions. Word has length 760 [2024-10-23 21:03:19,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:03:19,085 INFO L471 AbstractCegarLoop]: Abstraction has 16980 states and 17966 transitions. [2024-10-23 21:03:19,085 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 80.0) internal successors, (320), 4 states have internal predecessors, (320), 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) [2024-10-23 21:03:19,085 INFO L276 IsEmpty]: Start isEmpty. Operand 16980 states and 17966 transitions. [2024-10-23 21:03:19,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 934 [2024-10-23 21:03:19,100 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:03:19,101 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:03:19,101 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-10-23 21:03:19,101 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:03:19,101 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:03:19,101 INFO L85 PathProgramCache]: Analyzing trace with hash 164669317, now seen corresponding path program 1 times [2024-10-23 21:03:19,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:03:19,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413731700] [2024-10-23 21:03:19,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:03:19,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:03:19,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:03:20,137 INFO L134 CoverageAnalysis]: Checked inductivity of 2554 backedges. 2015 proven. 0 refuted. 0 times theorem prover too weak. 539 trivial. 0 not checked. [2024-10-23 21:03:20,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:03:20,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413731700] [2024-10-23 21:03:20,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1413731700] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:03:20,138 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:03:20,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-23 21:03:20,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289011409] [2024-10-23 21:03:20,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:03:20,139 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-23 21:03:20,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:03:20,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-23 21:03:20,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-23 21:03:20,141 INFO L87 Difference]: Start difference. First operand 16980 states and 17966 transitions. Second operand has 4 states, 4 states have (on average 139.25) internal successors, (557), 4 states have internal predecessors, (557), 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) [2024-10-23 21:03:21,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:03:21,213 INFO L93 Difference]: Finished difference Result 38018 states and 40219 transitions. [2024-10-23 21:03:21,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-23 21:03:21,213 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 139.25) internal successors, (557), 4 states have internal predecessors, (557), 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 933 [2024-10-23 21:03:21,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:03:21,233 INFO L225 Difference]: With dead ends: 38018 [2024-10-23 21:03:21,233 INFO L226 Difference]: Without dead ends: 21411 [2024-10-23 21:03:21,244 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-23 21:03:21,245 INFO L432 NwaCegarLoop]: 34 mSDtfsCounter, 219 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 1027 mSolverCounterSat, 157 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 219 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 1184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 157 IncrementalHoareTripleChecker+Valid, 1027 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-10-23 21:03:21,245 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [219 Valid, 59 Invalid, 1184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [157 Valid, 1027 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-10-23 21:03:21,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21411 states. [2024-10-23 21:03:21,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21411 to 14768. [2024-10-23 21:03:21,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14768 states, 14767 states have (on average 1.0547843163811201) internal successors, (15576), 14767 states have internal predecessors, (15576), 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) [2024-10-23 21:03:21,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14768 states to 14768 states and 15576 transitions. [2024-10-23 21:03:21,419 INFO L78 Accepts]: Start accepts. Automaton has 14768 states and 15576 transitions. Word has length 933 [2024-10-23 21:03:21,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:03:21,420 INFO L471 AbstractCegarLoop]: Abstraction has 14768 states and 15576 transitions. [2024-10-23 21:03:21,420 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 139.25) internal successors, (557), 4 states have internal predecessors, (557), 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) [2024-10-23 21:03:21,420 INFO L276 IsEmpty]: Start isEmpty. Operand 14768 states and 15576 transitions. [2024-10-23 21:03:21,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1026 [2024-10-23 21:03:21,434 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:03:21,435 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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] [2024-10-23 21:03:21,435 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-10-23 21:03:21,435 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:03:21,435 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:03:21,436 INFO L85 PathProgramCache]: Analyzing trace with hash -418780773, now seen corresponding path program 1 times [2024-10-23 21:03:21,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:03:21,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339493881] [2024-10-23 21:03:21,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:03:21,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:03:21,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat