./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.sw_sym_ex.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 61a67961 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/hardware-verification-bv/btor2c-lazyMod.sw_sym_ex.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-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 64bit --witnessprinter.graph.data.programhash 7efec3183b551b8159eccadb4807318ed392eb1a388f130f9498beabb74a52bc --- Real Ultimate output --- This is Ultimate 0.2.5-wip.fs.cvc5-61a6796-m [2024-10-14 07:00:24,185 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-14 07:00:24,267 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2024-10-14 07:00:24,273 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-14 07:00:24,275 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-14 07:00:24,309 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-14 07:00:24,310 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-14 07:00:24,310 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-14 07:00:24,311 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-14 07:00:24,312 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-14 07:00:24,313 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-14 07:00:24,314 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-14 07:00:24,314 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-14 07:00:24,315 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-14 07:00:24,315 INFO L153 SettingsManager]: * Use SBE=true [2024-10-14 07:00:24,315 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-14 07:00:24,315 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-14 07:00:24,316 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-14 07:00:24,316 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-14 07:00:24,320 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-14 07:00:24,321 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-14 07:00:24,321 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-14 07:00:24,321 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-14 07:00:24,322 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-14 07:00:24,322 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-14 07:00:24,322 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-14 07:00:24,322 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-14 07:00:24,322 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-14 07:00:24,323 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-14 07:00:24,323 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 07:00:24,323 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-14 07:00:24,323 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-14 07:00:24,324 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-14 07:00:24,324 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-14 07:00:24,324 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-14 07:00:24,327 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-14 07:00:24,327 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-14 07:00:24,327 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-14 07:00:24,328 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-14 07:00:24,328 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7efec3183b551b8159eccadb4807318ed392eb1a388f130f9498beabb74a52bc [2024-10-14 07:00:24,575 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-14 07:00:24,601 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-14 07:00:24,604 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-14 07:00:24,605 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-14 07:00:24,606 INFO L274 PluginConnector]: CDTParser initialized [2024-10-14 07:00:24,607 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.sw_sym_ex.c [2024-10-14 07:00:26,101 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-14 07:00:26,311 INFO L384 CDTParser]: Found 1 translation units. [2024-10-14 07:00:26,312 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.sw_sym_ex.c [2024-10-14 07:00:26,323 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6189e0ef2/f552c4fb6f724bfbbbb2219ac79b5aeb/FLAG1a7f75cae [2024-10-14 07:00:26,338 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6189e0ef2/f552c4fb6f724bfbbbb2219ac79b5aeb [2024-10-14 07:00:26,341 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-14 07:00:26,344 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-14 07:00:26,345 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-14 07:00:26,345 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-14 07:00:26,350 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-14 07:00:26,351 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 07:00:26" (1/1) ... [2024-10-14 07:00:26,353 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f844223 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:00:26, skipping insertion in model container [2024-10-14 07:00:26,353 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 07:00:26" (1/1) ... [2024-10-14 07:00:26,392 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-14 07:00:26,553 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/hardware-verification-bv/btor2c-lazyMod.sw_sym_ex.c[1249,1262] [2024-10-14 07:00:26,773 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 07:00:26,783 INFO L200 MainTranslator]: Completed pre-run [2024-10-14 07:00:26,792 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/hardware-verification-bv/btor2c-lazyMod.sw_sym_ex.c[1249,1262] [2024-10-14 07:00:26,888 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 07:00:26,905 INFO L204 MainTranslator]: Completed translation [2024-10-14 07:00:26,906 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:00:26 WrapperNode [2024-10-14 07:00:26,906 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-14 07:00:26,907 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-14 07:00:26,911 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-14 07:00:26,911 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-14 07:00:26,918 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:00:26" (1/1) ... [2024-10-14 07:00:26,952 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:00:26" (1/1) ... [2024-10-14 07:00:27,086 INFO L138 Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1300 [2024-10-14 07:00:27,087 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-14 07:00:27,087 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-14 07:00:27,088 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-14 07:00:27,088 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-14 07:00:27,098 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:00:26" (1/1) ... [2024-10-14 07:00:27,099 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:00:26" (1/1) ... [2024-10-14 07:00:27,124 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:00:26" (1/1) ... [2024-10-14 07:00:27,200 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]. [2024-10-14 07:00:27,201 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:00:26" (1/1) ... [2024-10-14 07:00:27,201 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:00:26" (1/1) ... [2024-10-14 07:00:27,247 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:00:26" (1/1) ... [2024-10-14 07:00:27,260 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:00:26" (1/1) ... [2024-10-14 07:00:27,295 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:00:26" (1/1) ... [2024-10-14 07:00:27,311 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:00:26" (1/1) ... [2024-10-14 07:00:27,340 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-14 07:00:27,341 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-14 07:00:27,342 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-14 07:00:27,342 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-14 07:00:27,343 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:00:26" (1/1) ... [2024-10-14 07:00:27,348 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 07:00:27,361 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 07:00:27,380 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) [2024-10-14 07:00:27,386 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 [2024-10-14 07:00:27,433 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-14 07:00:27,433 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-14 07:00:27,433 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-14 07:00:27,433 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-14 07:00:27,617 INFO L238 CfgBuilder]: Building ICFG [2024-10-14 07:00:27,619 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-14 07:00:29,100 INFO L? ?]: Removed 798 outVars from TransFormulas that were not future-live. [2024-10-14 07:00:29,100 INFO L287 CfgBuilder]: Performing block encoding [2024-10-14 07:00:29,150 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-14 07:00:29,152 INFO L314 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-14 07:00:29,153 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 07:00:29 BoogieIcfgContainer [2024-10-14 07:00:29,153 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-14 07:00:29,155 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-14 07:00:29,156 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-14 07:00:29,159 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-14 07:00:29,160 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 07:00:26" (1/3) ... [2024-10-14 07:00:29,161 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61610409 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 07:00:29, skipping insertion in model container [2024-10-14 07:00:29,161 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:00:26" (2/3) ... [2024-10-14 07:00:29,162 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61610409 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 07:00:29, skipping insertion in model container [2024-10-14 07:00:29,162 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 07:00:29" (3/3) ... [2024-10-14 07:00:29,164 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.sw_sym_ex.c [2024-10-14 07:00:29,181 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-14 07:00:29,182 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-14 07:00:29,267 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-14 07:00:29,273 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;@42e671f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-14 07:00:29,274 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-14 07:00:29,280 INFO L276 IsEmpty]: Start isEmpty. Operand has 379 states, 377 states have (on average 1.5013262599469497) internal successors, (566), 378 states have internal predecessors, (566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 07:00:29,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-10-14 07:00:29,289 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 07:00:29,290 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] [2024-10-14 07:00:29,290 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 07:00:29,297 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 07:00:29,299 INFO L85 PathProgramCache]: Analyzing trace with hash 1567860427, now seen corresponding path program 1 times [2024-10-14 07:00:29,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 07:00:29,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107013677] [2024-10-14 07:00:29,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 07:00:29,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 07:00:29,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 07:00:29,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 07:00:29,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 07:00:29,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1107013677] [2024-10-14 07:00:29,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1107013677] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 07:00:29,953 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 07:00:29,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-14 07:00:29,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956939974] [2024-10-14 07:00:29,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 07:00:29,958 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 07:00:29,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 07:00:29,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 07:00:29,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-14 07:00:29,989 INFO L87 Difference]: Start difference. First operand has 379 states, 377 states have (on average 1.5013262599469497) internal successors, (566), 378 states have internal predecessors, (566), 0 states have call successors, (0), 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 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 07:00:30,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 07:00:30,092 INFO L93 Difference]: Finished difference Result 714 states and 1068 transitions. [2024-10-14 07:00:30,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 07:00:30,095 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2024-10-14 07:00:30,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 07:00:30,106 INFO L225 Difference]: With dead ends: 714 [2024-10-14 07:00:30,108 INFO L226 Difference]: Without dead ends: 380 [2024-10-14 07:00:30,114 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-14 07:00:30,117 INFO L432 NwaCegarLoop]: 561 mSDtfsCounter, 0 mSDsluCounter, 1117 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1678 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-14 07:00:30,119 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1678 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-14 07:00:30,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 380 states. [2024-10-14 07:00:30,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 380 to 380. [2024-10-14 07:00:30,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 380 states, 379 states have (on average 1.4934036939313984) internal successors, (566), 379 states have internal predecessors, (566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 07:00:30,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 566 transitions. [2024-10-14 07:00:30,169 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 566 transitions. Word has length 36 [2024-10-14 07:00:30,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 07:00:30,169 INFO L471 AbstractCegarLoop]: Abstraction has 380 states and 566 transitions. [2024-10-14 07:00:30,169 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 07:00:30,170 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 566 transitions. [2024-10-14 07:00:30,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-10-14 07:00:30,171 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 07:00:30,171 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 07:00:30,171 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-14 07:00:30,172 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 07:00:30,172 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 07:00:30,172 INFO L85 PathProgramCache]: Analyzing trace with hash 1360728342, now seen corresponding path program 1 times [2024-10-14 07:00:30,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 07:00:30,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087165508] [2024-10-14 07:00:30,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 07:00:30,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 07:00:30,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 07:00:30,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 07:00:30,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 07:00:30,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2087165508] [2024-10-14 07:00:30,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2087165508] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 07:00:30,372 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 07:00:30,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-14 07:00:30,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221598083] [2024-10-14 07:00:30,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 07:00:30,374 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 07:00:30,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 07:00:30,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 07:00:30,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-14 07:00:30,376 INFO L87 Difference]: Start difference. First operand 380 states and 566 transitions. Second operand has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 07:00:30,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 07:00:30,427 INFO L93 Difference]: Finished difference Result 717 states and 1068 transitions. [2024-10-14 07:00:30,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 07:00:30,428 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2024-10-14 07:00:30,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 07:00:30,430 INFO L225 Difference]: With dead ends: 717 [2024-10-14 07:00:30,430 INFO L226 Difference]: Without dead ends: 382 [2024-10-14 07:00:30,431 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-14 07:00:30,432 INFO L432 NwaCegarLoop]: 561 mSDtfsCounter, 0 mSDsluCounter, 1114 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1675 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-14 07:00:30,433 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1675 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-14 07:00:30,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states. [2024-10-14 07:00:30,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 382. [2024-10-14 07:00:30,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 382 states, 381 states have (on average 1.4908136482939633) internal successors, (568), 381 states have internal predecessors, (568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 07:00:30,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 568 transitions. [2024-10-14 07:00:30,453 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 568 transitions. Word has length 37 [2024-10-14 07:00:30,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 07:00:30,454 INFO L471 AbstractCegarLoop]: Abstraction has 382 states and 568 transitions. [2024-10-14 07:00:30,454 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 07:00:30,454 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 568 transitions. [2024-10-14 07:00:30,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-10-14 07:00:30,455 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 07:00:30,456 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 07:00:30,456 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-14 07:00:30,456 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 07:00:30,457 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 07:00:30,457 INFO L85 PathProgramCache]: Analyzing trace with hash -1865060092, now seen corresponding path program 1 times [2024-10-14 07:00:30,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 07:00:30,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345384315] [2024-10-14 07:00:30,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 07:00:30,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 07:00:30,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 07:00:30,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 07:00:30,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 07:00:30,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1345384315] [2024-10-14 07:00:30,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1345384315] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 07:00:30,729 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 07:00:30,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-14 07:00:30,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795469610] [2024-10-14 07:00:30,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 07:00:30,733 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-14 07:00:30,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 07:00:30,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-14 07:00:30,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-14 07:00:30,735 INFO L87 Difference]: Start difference. First operand 382 states and 568 transitions. Second operand has 5 states, 5 states have (on average 7.6) internal successors, (38), 4 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 07:00:30,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 07:00:30,838 INFO L93 Difference]: Finished difference Result 1026 states and 1527 transitions. [2024-10-14 07:00:30,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-14 07:00:30,840 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 4 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2024-10-14 07:00:30,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 07:00:30,843 INFO L225 Difference]: With dead ends: 1026 [2024-10-14 07:00:30,843 INFO L226 Difference]: Without dead ends: 689 [2024-10-14 07:00:30,844 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-10-14 07:00:30,846 INFO L432 NwaCegarLoop]: 550 mSDtfsCounter, 1449 mSDsluCounter, 1095 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1449 SdHoareTripleChecker+Valid, 1645 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-14 07:00:30,849 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1449 Valid, 1645 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-14 07:00:30,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 689 states. [2024-10-14 07:00:30,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 689 to 396. [2024-10-14 07:00:30,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 396 states, 395 states have (on average 1.4886075949367088) internal successors, (588), 395 states have internal predecessors, (588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 07:00:30,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 396 states to 396 states and 588 transitions. [2024-10-14 07:00:30,868 INFO L78 Accepts]: Start accepts. Automaton has 396 states and 588 transitions. Word has length 38 [2024-10-14 07:00:30,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 07:00:30,868 INFO L471 AbstractCegarLoop]: Abstraction has 396 states and 588 transitions. [2024-10-14 07:00:30,868 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 4 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 07:00:30,868 INFO L276 IsEmpty]: Start isEmpty. Operand 396 states and 588 transitions. [2024-10-14 07:00:30,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2024-10-14 07:00:30,876 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 07:00:30,876 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 07:00:30,876 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-14 07:00:30,877 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 07:00:30,877 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 07:00:30,877 INFO L85 PathProgramCache]: Analyzing trace with hash -612550155, now seen corresponding path program 1 times [2024-10-14 07:00:30,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 07:00:30,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300265833] [2024-10-14 07:00:30,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 07:00:30,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 07:00:31,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 07:00:32,525 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 07:00:32,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 07:00:32,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300265833] [2024-10-14 07:00:32,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [300265833] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 07:00:32,530 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 07:00:32,530 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-14 07:00:32,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887976700] [2024-10-14 07:00:32,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 07:00:32,531 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-14 07:00:32,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 07:00:32,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-14 07:00:32,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-14 07:00:32,537 INFO L87 Difference]: Start difference. First operand 396 states and 588 transitions. Second operand has 5 states, 5 states have (on average 41.0) internal successors, (205), 4 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 07:00:32,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 07:00:32,670 INFO L93 Difference]: Finished difference Result 1002 states and 1490 transitions. [2024-10-14 07:00:32,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-14 07:00:32,671 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 41.0) internal successors, (205), 4 states have internal predecessors, (205), 0 states have call successors, (0), 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 205 [2024-10-14 07:00:32,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 07:00:32,674 INFO L225 Difference]: With dead ends: 1002 [2024-10-14 07:00:32,674 INFO L226 Difference]: Without dead ends: 665 [2024-10-14 07:00:32,675 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-10-14 07:00:32,677 INFO L432 NwaCegarLoop]: 548 mSDtfsCounter, 1347 mSDsluCounter, 1094 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1347 SdHoareTripleChecker+Valid, 1642 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-14 07:00:32,680 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1347 Valid, 1642 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-14 07:00:32,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 665 states. [2024-10-14 07:00:32,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 665 to 447. [2024-10-14 07:00:32,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 447 states, 446 states have (on average 1.4820627802690582) internal successors, (661), 446 states have internal predecessors, (661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 07:00:32,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 447 states to 447 states and 661 transitions. [2024-10-14 07:00:32,695 INFO L78 Accepts]: Start accepts. Automaton has 447 states and 661 transitions. Word has length 205 [2024-10-14 07:00:32,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 07:00:32,696 INFO L471 AbstractCegarLoop]: Abstraction has 447 states and 661 transitions. [2024-10-14 07:00:32,697 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 41.0) internal successors, (205), 4 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 07:00:32,697 INFO L276 IsEmpty]: Start isEmpty. Operand 447 states and 661 transitions. [2024-10-14 07:00:32,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2024-10-14 07:00:32,704 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 07:00:32,704 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 07:00:32,705 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-14 07:00:32,705 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 07:00:32,705 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 07:00:32,708 INFO L85 PathProgramCache]: Analyzing trace with hash -1860881512, now seen corresponding path program 1 times [2024-10-14 07:00:32,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 07:00:32,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957838684] [2024-10-14 07:00:32,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 07:00:32,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 07:00:33,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 07:00:34,554 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 07:00:34,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 07:00:34,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957838684] [2024-10-14 07:00:34,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1957838684] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 07:00:34,555 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 07:00:34,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-14 07:00:34,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863985515] [2024-10-14 07:00:34,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 07:00:34,556 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-14 07:00:34,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 07:00:34,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-14 07:00:34,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-14 07:00:34,561 INFO L87 Difference]: Start difference. First operand 447 states and 661 transitions. Second operand has 5 states, 5 states have (on average 41.4) internal successors, (207), 4 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 07:00:34,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 07:00:34,669 INFO L93 Difference]: Finished difference Result 1002 states and 1488 transitions. [2024-10-14 07:00:34,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-14 07:00:34,669 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 41.4) internal successors, (207), 4 states have internal predecessors, (207), 0 states have call successors, (0), 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 207 [2024-10-14 07:00:34,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 07:00:34,672 INFO L225 Difference]: With dead ends: 1002 [2024-10-14 07:00:34,673 INFO L226 Difference]: Without dead ends: 665 [2024-10-14 07:00:34,673 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-10-14 07:00:34,674 INFO L432 NwaCegarLoop]: 547 mSDtfsCounter, 1281 mSDsluCounter, 1094 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1281 SdHoareTripleChecker+Valid, 1641 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-14 07:00:34,675 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1281 Valid, 1641 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-14 07:00:34,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 665 states. [2024-10-14 07:00:34,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 665 to 570. [2024-10-14 07:00:34,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 570 states, 569 states have (on average 1.4833040421792618) internal successors, (844), 569 states have internal predecessors, (844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 07:00:34,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 570 states to 570 states and 844 transitions. [2024-10-14 07:00:34,687 INFO L78 Accepts]: Start accepts. Automaton has 570 states and 844 transitions. Word has length 207 [2024-10-14 07:00:34,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 07:00:34,688 INFO L471 AbstractCegarLoop]: Abstraction has 570 states and 844 transitions. [2024-10-14 07:00:34,688 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 41.4) internal successors, (207), 4 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 07:00:34,688 INFO L276 IsEmpty]: Start isEmpty. Operand 570 states and 844 transitions. [2024-10-14 07:00:34,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2024-10-14 07:00:34,690 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 07:00:34,691 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 07:00:34,691 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-14 07:00:34,691 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 07:00:34,692 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 07:00:34,692 INFO L85 PathProgramCache]: Analyzing trace with hash 1746892494, now seen corresponding path program 1 times [2024-10-14 07:00:34,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 07:00:34,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1468303099] [2024-10-14 07:00:34,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 07:00:34,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 07:00:35,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 07:00:36,008 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 07:00:36,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 07:00:36,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1468303099] [2024-10-14 07:00:36,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1468303099] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 07:00:36,009 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 07:00:36,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-14 07:00:36,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673623958] [2024-10-14 07:00:36,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 07:00:36,010 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-14 07:00:36,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 07:00:36,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-14 07:00:36,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-14 07:00:36,012 INFO L87 Difference]: Start difference. First operand 570 states and 844 transitions. Second operand has 5 states, 5 states have (on average 41.6) internal successors, (208), 4 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 07:00:36,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 07:00:36,136 INFO L93 Difference]: Finished difference Result 1064 states and 1579 transitions. [2024-10-14 07:00:36,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-14 07:00:36,137 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 41.6) internal successors, (208), 4 states have internal predecessors, (208), 0 states have call successors, (0), 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 208 [2024-10-14 07:00:36,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 07:00:36,140 INFO L225 Difference]: With dead ends: 1064 [2024-10-14 07:00:36,140 INFO L226 Difference]: Without dead ends: 665 [2024-10-14 07:00:36,141 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-10-14 07:00:36,141 INFO L432 NwaCegarLoop]: 547 mSDtfsCounter, 1311 mSDsluCounter, 1094 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1311 SdHoareTripleChecker+Valid, 1641 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-14 07:00:36,142 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1311 Valid, 1641 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-14 07:00:36,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 665 states. [2024-10-14 07:00:36,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 665 to 570. [2024-10-14 07:00:36,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 570 states, 569 states have (on average 1.4815465729349737) internal successors, (843), 569 states have internal predecessors, (843), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 07:00:36,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 570 states to 570 states and 843 transitions. [2024-10-14 07:00:36,155 INFO L78 Accepts]: Start accepts. Automaton has 570 states and 843 transitions. Word has length 208 [2024-10-14 07:00:36,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 07:00:36,155 INFO L471 AbstractCegarLoop]: Abstraction has 570 states and 843 transitions. [2024-10-14 07:00:36,156 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 41.6) internal successors, (208), 4 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 07:00:36,156 INFO L276 IsEmpty]: Start isEmpty. Operand 570 states and 843 transitions. [2024-10-14 07:00:36,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2024-10-14 07:00:36,158 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 07:00:36,159 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 07:00:36,159 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-14 07:00:36,159 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 07:00:36,160 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 07:00:36,160 INFO L85 PathProgramCache]: Analyzing trace with hash -424760120, now seen corresponding path program 1 times [2024-10-14 07:00:36,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 07:00:36,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791144248] [2024-10-14 07:00:36,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 07:00:36,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 07:00:36,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 07:00:37,575 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 07:00:37,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 07:00:37,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791144248] [2024-10-14 07:00:37,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1791144248] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 07:00:37,576 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 07:00:37,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-14 07:00:37,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520516093] [2024-10-14 07:00:37,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 07:00:37,577 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-14 07:00:37,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 07:00:37,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-14 07:00:37,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-14 07:00:37,578 INFO L87 Difference]: Start difference. First operand 570 states and 843 transitions. Second operand has 5 states, 5 states have (on average 41.8) internal successors, (209), 4 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 07:00:37,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 07:00:37,682 INFO L93 Difference]: Finished difference Result 1032 states and 1530 transitions. [2024-10-14 07:00:37,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-14 07:00:37,683 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 41.8) internal successors, (209), 4 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 209 [2024-10-14 07:00:37,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 07:00:37,686 INFO L225 Difference]: With dead ends: 1032 [2024-10-14 07:00:37,687 INFO L226 Difference]: Without dead ends: 665 [2024-10-14 07:00:37,687 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-10-14 07:00:37,688 INFO L432 NwaCegarLoop]: 547 mSDtfsCounter, 1292 mSDsluCounter, 1094 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1292 SdHoareTripleChecker+Valid, 1641 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-14 07:00:37,688 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1292 Valid, 1641 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-14 07:00:37,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 665 states. [2024-10-14 07:00:37,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 665 to 570. [2024-10-14 07:00:37,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 570 states, 569 states have (on average 1.4797891036906854) internal successors, (842), 569 states have internal predecessors, (842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 07:00:37,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 570 states to 570 states and 842 transitions. [2024-10-14 07:00:37,700 INFO L78 Accepts]: Start accepts. Automaton has 570 states and 842 transitions. Word has length 209 [2024-10-14 07:00:37,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 07:00:37,701 INFO L471 AbstractCegarLoop]: Abstraction has 570 states and 842 transitions. [2024-10-14 07:00:37,701 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 41.8) internal successors, (209), 4 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 07:00:37,701 INFO L276 IsEmpty]: Start isEmpty. Operand 570 states and 842 transitions. [2024-10-14 07:00:37,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2024-10-14 07:00:37,703 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 07:00:37,703 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 07:00:37,703 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-14 07:00:37,704 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 07:00:37,704 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 07:00:37,704 INFO L85 PathProgramCache]: Analyzing trace with hash -778410794, now seen corresponding path program 1 times [2024-10-14 07:00:37,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 07:00:37,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722694879] [2024-10-14 07:00:37,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 07:00:37,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 07:00:38,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 07:00:38,939 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 07:00:38,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 07:00:38,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722694879] [2024-10-14 07:00:38,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1722694879] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 07:00:38,940 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 07:00:38,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-14 07:00:38,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094766958] [2024-10-14 07:00:38,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 07:00:38,942 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-14 07:00:38,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 07:00:38,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-14 07:00:38,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-14 07:00:38,943 INFO L87 Difference]: Start difference. First operand 570 states and 842 transitions. Second operand has 7 states, 7 states have (on average 30.0) internal successors, (210), 6 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 07:00:39,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 07:00:39,109 INFO L93 Difference]: Finished difference Result 1036 states and 1535 transitions. [2024-10-14 07:00:39,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-14 07:00:39,109 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 30.0) internal successors, (210), 6 states have internal predecessors, (210), 0 states have call successors, (0), 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 210 [2024-10-14 07:00:39,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 07:00:39,114 INFO L225 Difference]: With dead ends: 1036 [2024-10-14 07:00:39,114 INFO L226 Difference]: Without dead ends: 673 [2024-10-14 07:00:39,115 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-10-14 07:00:39,115 INFO L432 NwaCegarLoop]: 544 mSDtfsCounter, 1311 mSDsluCounter, 2174 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1311 SdHoareTripleChecker+Valid, 2718 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-14 07:00:39,115 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1311 Valid, 2718 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-14 07:00:39,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 673 states. [2024-10-14 07:00:39,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 673 to 572. [2024-10-14 07:00:39,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 572 states, 571 states have (on average 1.478108581436077) internal successors, (844), 571 states have internal predecessors, (844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 07:00:39,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 572 states to 572 states and 844 transitions. [2024-10-14 07:00:39,132 INFO L78 Accepts]: Start accepts. Automaton has 572 states and 844 transitions. Word has length 210 [2024-10-14 07:00:39,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 07:00:39,133 INFO L471 AbstractCegarLoop]: Abstraction has 572 states and 844 transitions. [2024-10-14 07:00:39,133 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 30.0) internal successors, (210), 6 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 07:00:39,133 INFO L276 IsEmpty]: Start isEmpty. Operand 572 states and 844 transitions. [2024-10-14 07:00:39,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2024-10-14 07:00:39,135 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 07:00:39,135 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 07:00:39,136 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-14 07:00:39,136 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 07:00:39,136 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 07:00:39,136 INFO L85 PathProgramCache]: Analyzing trace with hash -14171519, now seen corresponding path program 1 times [2024-10-14 07:00:39,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 07:00:39,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666842176] [2024-10-14 07:00:39,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 07:00:39,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 07:00:39,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 07:00:40,430 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 07:00:40,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 07:00:40,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666842176] [2024-10-14 07:00:40,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [666842176] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 07:00:40,431 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 07:00:40,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-14 07:00:40,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314828506] [2024-10-14 07:00:40,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 07:00:40,431 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-14 07:00:40,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 07:00:40,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-14 07:00:40,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-14 07:00:40,433 INFO L87 Difference]: Start difference. First operand 572 states and 844 transitions. Second operand has 5 states, 5 states have (on average 42.2) internal successors, (211), 4 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 07:00:40,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 07:00:40,540 INFO L93 Difference]: Finished difference Result 1007 states and 1492 transitions. [2024-10-14 07:00:40,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-14 07:00:40,541 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 42.2) internal successors, (211), 4 states have internal predecessors, (211), 0 states have call successors, (0), 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 211 [2024-10-14 07:00:40,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 07:00:40,543 INFO L225 Difference]: With dead ends: 1007 [2024-10-14 07:00:40,543 INFO L226 Difference]: Without dead ends: 670 [2024-10-14 07:00:40,544 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-10-14 07:00:40,548 INFO L432 NwaCegarLoop]: 547 mSDtfsCounter, 1229 mSDsluCounter, 1090 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1229 SdHoareTripleChecker+Valid, 1637 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-14 07:00:40,549 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1229 Valid, 1637 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-14 07:00:40,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 670 states. [2024-10-14 07:00:40,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 670 to 668. [2024-10-14 07:00:40,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 668 states, 667 states have (on average 1.47976011994003) internal successors, (987), 667 states have internal predecessors, (987), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 07:00:40,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 668 states to 668 states and 987 transitions. [2024-10-14 07:00:40,565 INFO L78 Accepts]: Start accepts. Automaton has 668 states and 987 transitions. Word has length 211 [2024-10-14 07:00:40,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 07:00:40,566 INFO L471 AbstractCegarLoop]: Abstraction has 668 states and 987 transitions. [2024-10-14 07:00:40,566 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 42.2) internal successors, (211), 4 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 07:00:40,566 INFO L276 IsEmpty]: Start isEmpty. Operand 668 states and 987 transitions. [2024-10-14 07:00:40,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2024-10-14 07:00:40,568 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 07:00:40,568 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 07:00:40,568 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-14 07:00:40,569 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 07:00:40,569 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 07:00:40,573 INFO L85 PathProgramCache]: Analyzing trace with hash -2070528595, now seen corresponding path program 1 times [2024-10-14 07:00:40,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 07:00:40,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042680107] [2024-10-14 07:00:40,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 07:00:40,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 07:00:41,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 07:00:41,842 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 07:00:41,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 07:00:41,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2042680107] [2024-10-14 07:00:41,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2042680107] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 07:00:41,843 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 07:00:41,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-14 07:00:41,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579889590] [2024-10-14 07:00:41,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 07:00:41,844 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-14 07:00:41,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 07:00:41,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-14 07:00:41,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-14 07:00:41,845 INFO L87 Difference]: Start difference. First operand 668 states and 987 transitions. Second operand has 7 states, 7 states have (on average 30.285714285714285) internal successors, (212), 6 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 07:00:41,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 07:00:41,999 INFO L93 Difference]: Finished difference Result 1102 states and 1632 transitions. [2024-10-14 07:00:42,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-14 07:00:42,000 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 30.285714285714285) internal successors, (212), 6 states have internal predecessors, (212), 0 states have call successors, (0), 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 212 [2024-10-14 07:00:42,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 07:00:42,005 INFO L225 Difference]: With dead ends: 1102 [2024-10-14 07:00:42,005 INFO L226 Difference]: Without dead ends: 675 [2024-10-14 07:00:42,006 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-10-14 07:00:42,006 INFO L432 NwaCegarLoop]: 544 mSDtfsCounter, 1292 mSDsluCounter, 1896 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1292 SdHoareTripleChecker+Valid, 2440 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-14 07:00:42,007 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1292 Valid, 2440 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-14 07:00:42,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 675 states. [2024-10-14 07:00:42,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 675 to 670. [2024-10-14 07:00:42,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 670 states, 669 states have (on average 1.4783258594917787) internal successors, (989), 669 states have internal predecessors, (989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 07:00:42,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 670 states to 670 states and 989 transitions. [2024-10-14 07:00:42,021 INFO L78 Accepts]: Start accepts. Automaton has 670 states and 989 transitions. Word has length 212 [2024-10-14 07:00:42,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 07:00:42,022 INFO L471 AbstractCegarLoop]: Abstraction has 670 states and 989 transitions. [2024-10-14 07:00:42,022 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 30.285714285714285) internal successors, (212), 6 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 07:00:42,022 INFO L276 IsEmpty]: Start isEmpty. Operand 670 states and 989 transitions. [2024-10-14 07:00:42,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2024-10-14 07:00:42,024 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 07:00:42,024 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 07:00:42,025 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-14 07:00:42,025 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 07:00:42,025 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 07:00:42,025 INFO L85 PathProgramCache]: Analyzing trace with hash -319639134, now seen corresponding path program 1 times [2024-10-14 07:00:42,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 07:00:42,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485807778] [2024-10-14 07:00:42,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 07:00:42,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 07:00:42,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 07:00:43,124 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 07:00:43,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 07:00:43,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485807778] [2024-10-14 07:00:43,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [485807778] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 07:00:43,126 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 07:00:43,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-14 07:00:43,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131101970] [2024-10-14 07:00:43,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 07:00:43,127 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-14 07:00:43,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 07:00:43,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-14 07:00:43,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-14 07:00:43,128 INFO L87 Difference]: Start difference. First operand 670 states and 989 transitions. Second operand has 7 states, 7 states have (on average 30.428571428571427) internal successors, (213), 6 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 07:00:43,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 07:00:43,287 INFO L93 Difference]: Finished difference Result 1140 states and 1688 transitions. [2024-10-14 07:00:43,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-14 07:00:43,288 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 30.428571428571427) internal successors, (213), 6 states have internal predecessors, (213), 0 states have call successors, (0), 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 213 [2024-10-14 07:00:43,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 07:00:43,291 INFO L225 Difference]: With dead ends: 1140 [2024-10-14 07:00:43,291 INFO L226 Difference]: Without dead ends: 717 [2024-10-14 07:00:43,292 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-10-14 07:00:43,292 INFO L432 NwaCegarLoop]: 543 mSDtfsCounter, 1408 mSDsluCounter, 2174 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1408 SdHoareTripleChecker+Valid, 2717 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-14 07:00:43,292 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1408 Valid, 2717 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-14 07:00:43,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 717 states. [2024-10-14 07:00:43,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 717 to 672. [2024-10-14 07:00:43,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 672 states, 671 states have (on average 1.4769001490312965) internal successors, (991), 671 states have internal predecessors, (991), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 07:00:43,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 672 states to 672 states and 991 transitions. [2024-10-14 07:00:43,305 INFO L78 Accepts]: Start accepts. Automaton has 672 states and 991 transitions. Word has length 213 [2024-10-14 07:00:43,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 07:00:43,306 INFO L471 AbstractCegarLoop]: Abstraction has 672 states and 991 transitions. [2024-10-14 07:00:43,306 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 30.428571428571427) internal successors, (213), 6 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 07:00:43,306 INFO L276 IsEmpty]: Start isEmpty. Operand 672 states and 991 transitions. [2024-10-14 07:00:43,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2024-10-14 07:00:43,308 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 07:00:43,308 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 07:00:43,308 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-14 07:00:43,309 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 07:00:43,309 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 07:00:43,309 INFO L85 PathProgramCache]: Analyzing trace with hash 1059279750, now seen corresponding path program 1 times [2024-10-14 07:00:43,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 07:00:43,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195159284] [2024-10-14 07:00:43,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 07:00:43,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 07:00:43,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 07:00:44,656 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 07:00:44,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 07:00:44,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195159284] [2024-10-14 07:00:44,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [195159284] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 07:00:44,657 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 07:00:44,657 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-14 07:00:44,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64673690] [2024-10-14 07:00:44,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 07:00:44,658 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-14 07:00:44,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 07:00:44,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-14 07:00:44,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-14 07:00:44,660 INFO L87 Difference]: Start difference. First operand 672 states and 991 transitions. Second operand has 5 states, 5 states have (on average 42.6) internal successors, (213), 4 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 07:00:44,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 07:00:44,773 INFO L93 Difference]: Finished difference Result 1071 states and 1584 transitions. [2024-10-14 07:00:44,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-14 07:00:44,774 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 42.6) internal successors, (213), 4 states have internal predecessors, (213), 0 states have call successors, (0), 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 213 [2024-10-14 07:00:44,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 07:00:44,777 INFO L225 Difference]: With dead ends: 1071 [2024-10-14 07:00:44,777 INFO L226 Difference]: Without dead ends: 672 [2024-10-14 07:00:44,778 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-10-14 07:00:44,779 INFO L432 NwaCegarLoop]: 547 mSDtfsCounter, 1254 mSDsluCounter, 1094 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1254 SdHoareTripleChecker+Valid, 1641 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-14 07:00:44,779 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1254 Valid, 1641 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-14 07:00:44,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 672 states. [2024-10-14 07:00:44,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 672 to 672. [2024-10-14 07:00:44,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 672 states, 671 states have (on average 1.4754098360655739) internal successors, (990), 671 states have internal predecessors, (990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 07:00:44,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 672 states to 672 states and 990 transitions. [2024-10-14 07:00:44,794 INFO L78 Accepts]: Start accepts. Automaton has 672 states and 990 transitions. Word has length 213 [2024-10-14 07:00:44,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 07:00:44,795 INFO L471 AbstractCegarLoop]: Abstraction has 672 states and 990 transitions. [2024-10-14 07:00:44,795 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 42.6) internal successors, (213), 4 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 07:00:44,795 INFO L276 IsEmpty]: Start isEmpty. Operand 672 states and 990 transitions. [2024-10-14 07:00:44,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2024-10-14 07:00:44,798 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 07:00:44,798 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 07:00:44,798 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-14 07:00:44,799 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 07:00:44,799 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 07:00:44,799 INFO L85 PathProgramCache]: Analyzing trace with hash -719945800, now seen corresponding path program 1 times [2024-10-14 07:00:44,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 07:00:44,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103688333] [2024-10-14 07:00:44,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 07:00:44,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 07:00:45,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 07:00:45,953 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 07:00:45,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 07:00:45,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [103688333] [2024-10-14 07:00:45,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [103688333] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 07:00:45,954 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 07:00:45,954 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-14 07:00:45,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34716415] [2024-10-14 07:00:45,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 07:00:45,954 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-14 07:00:45,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 07:00:45,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-14 07:00:45,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-14 07:00:45,955 INFO L87 Difference]: Start difference. First operand 672 states and 990 transitions. Second operand has 7 states, 7 states have (on average 30.571428571428573) internal successors, (214), 6 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 07:00:46,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 07:00:46,096 INFO L93 Difference]: Finished difference Result 1074 states and 1587 transitions. [2024-10-14 07:00:46,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-14 07:00:46,096 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 30.571428571428573) internal successors, (214), 6 states have internal predecessors, (214), 0 states have call successors, (0), 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 214 [2024-10-14 07:00:46,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 07:00:46,099 INFO L225 Difference]: With dead ends: 1074 [2024-10-14 07:00:46,099 INFO L226 Difference]: Without dead ends: 679 [2024-10-14 07:00:46,100 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-10-14 07:00:46,101 INFO L432 NwaCegarLoop]: 544 mSDtfsCounter, 1272 mSDsluCounter, 1894 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1272 SdHoareTripleChecker+Valid, 2438 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-14 07:00:46,101 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1272 Valid, 2438 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-14 07:00:46,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 679 states. [2024-10-14 07:00:46,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 679 to 674. [2024-10-14 07:00:46,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 674 states, 673 states have (on average 1.473997028231798) internal successors, (992), 673 states have internal predecessors, (992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 07:00:46,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 674 states to 674 states and 992 transitions. [2024-10-14 07:00:46,114 INFO L78 Accepts]: Start accepts. Automaton has 674 states and 992 transitions. Word has length 214 [2024-10-14 07:00:46,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 07:00:46,114 INFO L471 AbstractCegarLoop]: Abstraction has 674 states and 992 transitions. [2024-10-14 07:00:46,115 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 30.571428571428573) internal successors, (214), 6 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 07:00:46,115 INFO L276 IsEmpty]: Start isEmpty. Operand 674 states and 992 transitions. [2024-10-14 07:00:46,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2024-10-14 07:00:46,117 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 07:00:46,118 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 07:00:46,118 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-10-14 07:00:46,118 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 07:00:46,118 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 07:00:46,118 INFO L85 PathProgramCache]: Analyzing trace with hash 407966143, now seen corresponding path program 1 times [2024-10-14 07:00:46,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 07:00:46,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190532821] [2024-10-14 07:00:46,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 07:00:46,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 07:00:46,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 07:00:47,338 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 07:00:47,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 07:00:47,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190532821] [2024-10-14 07:00:47,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1190532821] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 07:00:47,338 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 07:00:47,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-14 07:00:47,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866609700] [2024-10-14 07:00:47,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 07:00:47,339 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-14 07:00:47,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 07:00:47,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-14 07:00:47,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-14 07:00:47,341 INFO L87 Difference]: Start difference. First operand 674 states and 992 transitions. Second operand has 7 states, 7 states have (on average 30.714285714285715) internal successors, (215), 6 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 07:00:47,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 07:00:47,493 INFO L93 Difference]: Finished difference Result 1112 states and 1643 transitions. [2024-10-14 07:00:47,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-14 07:00:47,494 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 30.714285714285715) internal successors, (215), 6 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 215 [2024-10-14 07:00:47,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 07:00:47,497 INFO L225 Difference]: With dead ends: 1112 [2024-10-14 07:00:47,497 INFO L226 Difference]: Without dead ends: 721 [2024-10-14 07:00:47,498 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-10-14 07:00:47,498 INFO L432 NwaCegarLoop]: 543 mSDtfsCounter, 1388 mSDsluCounter, 2092 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1388 SdHoareTripleChecker+Valid, 2635 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-14 07:00:47,498 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1388 Valid, 2635 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-14 07:00:47,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 721 states. [2024-10-14 07:00:47,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 721 to 676. [2024-10-14 07:00:47,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 676 states, 675 states have (on average 1.4725925925925927) internal successors, (994), 675 states have internal predecessors, (994), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 07:00:47,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 676 states to 676 states and 994 transitions. [2024-10-14 07:00:47,516 INFO L78 Accepts]: Start accepts. Automaton has 676 states and 994 transitions. Word has length 215 [2024-10-14 07:00:47,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 07:00:47,516 INFO L471 AbstractCegarLoop]: Abstraction has 676 states and 994 transitions. [2024-10-14 07:00:47,517 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 30.714285714285715) internal successors, (215), 6 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 07:00:47,517 INFO L276 IsEmpty]: Start isEmpty. Operand 676 states and 994 transitions. [2024-10-14 07:00:47,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2024-10-14 07:00:47,519 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 07:00:47,519 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 07:00:47,519 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-10-14 07:00:47,520 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 07:00:47,520 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 07:00:47,520 INFO L85 PathProgramCache]: Analyzing trace with hash -1473643613, now seen corresponding path program 1 times [2024-10-14 07:00:47,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 07:00:47,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1687014977] [2024-10-14 07:00:47,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 07:00:47,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 07:00:48,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 07:00:48,729 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 07:00:48,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 07:00:48,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1687014977] [2024-10-14 07:00:48,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1687014977] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 07:00:48,730 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 07:00:48,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-14 07:00:48,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813422597] [2024-10-14 07:00:48,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 07:00:48,731 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-14 07:00:48,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 07:00:48,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-14 07:00:48,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-14 07:00:48,733 INFO L87 Difference]: Start difference. First operand 676 states and 994 transitions. Second operand has 5 states, 5 states have (on average 43.0) internal successors, (215), 4 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 07:00:48,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 07:00:48,831 INFO L93 Difference]: Finished difference Result 1043 states and 1539 transitions. [2024-10-14 07:00:48,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-14 07:00:48,831 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 43.0) internal successors, (215), 4 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 215 [2024-10-14 07:00:48,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 07:00:48,834 INFO L225 Difference]: With dead ends: 1043 [2024-10-14 07:00:48,834 INFO L226 Difference]: Without dead ends: 676 [2024-10-14 07:00:48,836 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-10-14 07:00:48,837 INFO L432 NwaCegarLoop]: 547 mSDtfsCounter, 1234 mSDsluCounter, 1094 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1234 SdHoareTripleChecker+Valid, 1641 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-14 07:00:48,837 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1234 Valid, 1641 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-14 07:00:48,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 676 states. [2024-10-14 07:00:48,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 676 to 676. [2024-10-14 07:00:48,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 676 states, 675 states have (on average 1.471111111111111) internal successors, (993), 675 states have internal predecessors, (993), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 07:00:48,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 676 states to 676 states and 993 transitions. [2024-10-14 07:00:48,849 INFO L78 Accepts]: Start accepts. Automaton has 676 states and 993 transitions. Word has length 215 [2024-10-14 07:00:48,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 07:00:48,850 INFO L471 AbstractCegarLoop]: Abstraction has 676 states and 993 transitions. [2024-10-14 07:00:48,850 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 43.0) internal successors, (215), 4 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 07:00:48,850 INFO L276 IsEmpty]: Start isEmpty. Operand 676 states and 993 transitions. [2024-10-14 07:00:48,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2024-10-14 07:00:48,852 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 07:00:48,852 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 07:00:48,853 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-10-14 07:00:48,853 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 07:00:48,853 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 07:00:48,854 INFO L85 PathProgramCache]: Analyzing trace with hash -143869437, now seen corresponding path program 1 times [2024-10-14 07:00:48,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 07:00:48,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927197855] [2024-10-14 07:00:48,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 07:00:48,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 07:00:49,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 07:00:50,035 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 07:00:50,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 07:00:50,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927197855] [2024-10-14 07:00:50,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1927197855] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 07:00:50,037 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 07:00:50,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-14 07:00:50,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153782036] [2024-10-14 07:00:50,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 07:00:50,038 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-14 07:00:50,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 07:00:50,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-14 07:00:50,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-14 07:00:50,039 INFO L87 Difference]: Start difference. First operand 676 states and 993 transitions. Second operand has 7 states, 7 states have (on average 30.857142857142858) internal successors, (216), 6 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 07:00:50,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 07:00:50,179 INFO L93 Difference]: Finished difference Result 1046 states and 1542 transitions. [2024-10-14 07:00:50,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-14 07:00:50,179 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 30.857142857142858) internal successors, (216), 6 states have internal predecessors, (216), 0 states have call successors, (0), 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 216 [2024-10-14 07:00:50,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 07:00:50,182 INFO L225 Difference]: With dead ends: 1046 [2024-10-14 07:00:50,182 INFO L226 Difference]: Without dead ends: 683 [2024-10-14 07:00:50,183 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-10-14 07:00:50,183 INFO L432 NwaCegarLoop]: 544 mSDtfsCounter, 1252 mSDsluCounter, 2033 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1252 SdHoareTripleChecker+Valid, 2577 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-14 07:00:50,184 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1252 Valid, 2577 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-14 07:00:50,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 683 states. [2024-10-14 07:00:50,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 683 to 678. [2024-10-14 07:00:50,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 678 states, 677 states have (on average 1.4697193500738552) internal successors, (995), 677 states have internal predecessors, (995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 07:00:50,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 678 states to 678 states and 995 transitions. [2024-10-14 07:00:50,197 INFO L78 Accepts]: Start accepts. Automaton has 678 states and 995 transitions. Word has length 216 [2024-10-14 07:00:50,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 07:00:50,197 INFO L471 AbstractCegarLoop]: Abstraction has 678 states and 995 transitions. [2024-10-14 07:00:50,198 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 30.857142857142858) internal successors, (216), 6 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 07:00:50,198 INFO L276 IsEmpty]: Start isEmpty. Operand 678 states and 995 transitions. [2024-10-14 07:00:50,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2024-10-14 07:00:50,200 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 07:00:50,200 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 07:00:50,200 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-10-14 07:00:50,201 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 07:00:50,201 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 07:00:50,201 INFO L85 PathProgramCache]: Analyzing trace with hash 1740837276, now seen corresponding path program 1 times [2024-10-14 07:00:50,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 07:00:50,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385413747] [2024-10-14 07:00:50,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 07:00:50,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 07:00:50,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 07:00:51,337 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 07:00:51,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 07:00:51,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385413747] [2024-10-14 07:00:51,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [385413747] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 07:00:51,338 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 07:00:51,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-14 07:00:51,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669922913] [2024-10-14 07:00:51,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 07:00:51,339 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-14 07:00:51,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 07:00:51,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-14 07:00:51,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-14 07:00:51,340 INFO L87 Difference]: Start difference. First operand 678 states and 995 transitions. Second operand has 7 states, 7 states have (on average 31.0) internal successors, (217), 6 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 07:00:51,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 07:00:51,483 INFO L93 Difference]: Finished difference Result 1084 states and 1598 transitions. [2024-10-14 07:00:51,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-14 07:00:51,484 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 31.0) internal successors, (217), 6 states have internal predecessors, (217), 0 states have call successors, (0), 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 217 [2024-10-14 07:00:51,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 07:00:51,486 INFO L225 Difference]: With dead ends: 1084 [2024-10-14 07:00:51,487 INFO L226 Difference]: Without dead ends: 725 [2024-10-14 07:00:51,487 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-10-14 07:00:51,488 INFO L432 NwaCegarLoop]: 543 mSDtfsCounter, 1368 mSDsluCounter, 2174 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1368 SdHoareTripleChecker+Valid, 2717 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-14 07:00:51,488 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1368 Valid, 2717 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-14 07:00:51,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 725 states. [2024-10-14 07:00:51,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 725 to 680. [2024-10-14 07:00:51,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 680 states, 679 states have (on average 1.4683357879234167) internal successors, (997), 679 states have internal predecessors, (997), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 07:00:51,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 680 states to 680 states and 997 transitions. [2024-10-14 07:00:51,507 INFO L78 Accepts]: Start accepts. Automaton has 680 states and 997 transitions. Word has length 217 [2024-10-14 07:00:51,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 07:00:51,508 INFO L471 AbstractCegarLoop]: Abstraction has 680 states and 997 transitions. [2024-10-14 07:00:51,511 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 31.0) internal successors, (217), 6 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 07:00:51,511 INFO L276 IsEmpty]: Start isEmpty. Operand 680 states and 997 transitions. [2024-10-14 07:00:51,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2024-10-14 07:00:51,513 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 07:00:51,514 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 07:00:51,514 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-10-14 07:00:51,514 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 07:00:51,519 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 07:00:51,519 INFO L85 PathProgramCache]: Analyzing trace with hash -556514432, now seen corresponding path program 1 times [2024-10-14 07:00:51,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 07:00:51,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691621364] [2024-10-14 07:00:51,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 07:00:51,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 07:00:51,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 07:00:52,578 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 07:00:52,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 07:00:52,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691621364] [2024-10-14 07:00:52,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [691621364] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 07:00:52,579 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 07:00:52,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-14 07:00:52,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083329759] [2024-10-14 07:00:52,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 07:00:52,580 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-14 07:00:52,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 07:00:52,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-14 07:00:52,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-14 07:00:52,581 INFO L87 Difference]: Start difference. First operand 680 states and 997 transitions. Second operand has 7 states, 7 states have (on average 31.0) internal successors, (217), 6 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 07:00:52,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 07:00:52,712 INFO L93 Difference]: Finished difference Result 1024 states and 1508 transitions. [2024-10-14 07:00:52,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-14 07:00:52,713 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 31.0) internal successors, (217), 6 states have internal predecessors, (217), 0 states have call successors, (0), 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 217 [2024-10-14 07:00:52,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 07:00:52,716 INFO L225 Difference]: With dead ends: 1024 [2024-10-14 07:00:52,716 INFO L226 Difference]: Without dead ends: 687 [2024-10-14 07:00:52,717 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-10-14 07:00:52,717 INFO L432 NwaCegarLoop]: 544 mSDtfsCounter, 1229 mSDsluCounter, 1896 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1229 SdHoareTripleChecker+Valid, 2440 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-14 07:00:52,717 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1229 Valid, 2440 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-14 07:00:52,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 687 states. [2024-10-14 07:00:52,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 687 to 683. [2024-10-14 07:00:52,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 683 states, 682 states have (on average 1.467741935483871) internal successors, (1001), 682 states have internal predecessors, (1001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 07:00:52,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 683 states to 683 states and 1001 transitions. [2024-10-14 07:00:52,730 INFO L78 Accepts]: Start accepts. Automaton has 683 states and 1001 transitions. Word has length 217 [2024-10-14 07:00:52,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 07:00:52,730 INFO L471 AbstractCegarLoop]: Abstraction has 683 states and 1001 transitions. [2024-10-14 07:00:52,731 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 31.0) internal successors, (217), 6 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 07:00:52,731 INFO L276 IsEmpty]: Start isEmpty. Operand 683 states and 1001 transitions. [2024-10-14 07:00:52,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2024-10-14 07:00:52,733 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 07:00:52,733 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 07:00:52,733 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-10-14 07:00:52,734 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 07:00:52,734 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 07:00:52,734 INFO L85 PathProgramCache]: Analyzing trace with hash -2121032331, now seen corresponding path program 1 times [2024-10-14 07:00:52,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 07:00:52,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856438555] [2024-10-14 07:00:52,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 07:00:52,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 07:00:53,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 07:00:53,861 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 07:00:53,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 07:00:53,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856438555] [2024-10-14 07:00:53,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [856438555] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 07:00:53,862 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 07:00:53,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-14 07:00:53,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301635259] [2024-10-14 07:00:53,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 07:00:53,864 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-14 07:00:53,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 07:00:53,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-14 07:00:53,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-14 07:00:53,865 INFO L87 Difference]: Start difference. First operand 683 states and 1001 transitions. Second operand has 7 states, 7 states have (on average 31.142857142857142) internal successors, (218), 6 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) [2024-10-14 07:00:54,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 07:00:54,008 INFO L93 Difference]: Finished difference Result 1066 states and 1570 transitions. [2024-10-14 07:00:54,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-14 07:00:54,009 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 31.142857142857142) internal successors, (218), 6 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 218 [2024-10-14 07:00:54,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 07:00:54,012 INFO L225 Difference]: With dead ends: 1066 [2024-10-14 07:00:54,012 INFO L226 Difference]: Without dead ends: 729 [2024-10-14 07:00:54,013 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-10-14 07:00:54,013 INFO L432 NwaCegarLoop]: 543 mSDtfsCounter, 1350 mSDsluCounter, 2174 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1350 SdHoareTripleChecker+Valid, 2717 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-14 07:00:54,013 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1350 Valid, 2717 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-14 07:00:54,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 729 states. [2024-10-14 07:00:54,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 729 to 689. [2024-10-14 07:00:54,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 689 states, 688 states have (on average 1.4665697674418605) internal successors, (1009), 688 states have internal predecessors, (1009), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 07:00:54,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 689 states to 689 states and 1009 transitions. [2024-10-14 07:00:54,028 INFO L78 Accepts]: Start accepts. Automaton has 689 states and 1009 transitions. Word has length 218 [2024-10-14 07:00:54,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 07:00:54,028 INFO L471 AbstractCegarLoop]: Abstraction has 689 states and 1009 transitions. [2024-10-14 07:00:54,029 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 31.142857142857142) internal successors, (218), 6 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) [2024-10-14 07:00:54,029 INFO L276 IsEmpty]: Start isEmpty. Operand 689 states and 1009 transitions. [2024-10-14 07:00:54,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2024-10-14 07:00:54,031 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 07:00:54,031 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 07:00:54,031 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-10-14 07:00:54,031 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 07:00:54,032 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 07:00:54,032 INFO L85 PathProgramCache]: Analyzing trace with hash -713992431, now seen corresponding path program 1 times [2024-10-14 07:00:54,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 07:00:54,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407905503] [2024-10-14 07:00:54,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 07:00:54,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 07:00:54,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 07:00:55,063 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 07:00:55,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 07:00:55,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407905503] [2024-10-14 07:00:55,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1407905503] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 07:00:55,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1819380645] [2024-10-14 07:00:55,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 07:00:55,064 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 07:00:55,065 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 07:00:55,066 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) [2024-10-14 07:00:55,068 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-14 07:00:55,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 07:00:55,756 INFO L255 TraceCheckSpWp]: Trace formula consists of 1342 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-10-14 07:00:55,771 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 07:00:56,036 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 07:00:56,036 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 07:00:56,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1819380645] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 07:00:56,037 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-14 07:00:56,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2024-10-14 07:00:56,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143848665] [2024-10-14 07:00:56,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 07:00:56,038 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-14 07:00:56,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 07:00:56,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-14 07:00:56,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-10-14 07:00:56,039 INFO L87 Difference]: Start difference. First operand 689 states and 1009 transitions. Second operand has 5 states, 5 states have (on average 43.6) internal successors, (218), 4 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) [2024-10-14 07:00:56,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 07:00:56,299 INFO L93 Difference]: Finished difference Result 1299 states and 1903 transitions. [2024-10-14 07:00:56,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-14 07:00:56,299 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 43.6) internal successors, (218), 4 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 218 [2024-10-14 07:00:56,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 07:00:56,302 INFO L225 Difference]: With dead ends: 1299 [2024-10-14 07:00:56,302 INFO L226 Difference]: Without dead ends: 688 [2024-10-14 07:00:56,303 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 215 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-10-14 07:00:56,303 INFO L432 NwaCegarLoop]: 478 mSDtfsCounter, 1346 mSDsluCounter, 953 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1346 SdHoareTripleChecker+Valid, 1431 SdHoareTripleChecker+Invalid, 261 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-14 07:00:56,304 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1346 Valid, 1431 Invalid, 261 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 260 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-14 07:00:56,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 688 states. [2024-10-14 07:00:56,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 688 to 688. [2024-10-14 07:00:56,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 688 states, 687 states have (on average 1.4643377001455604) internal successors, (1006), 687 states have internal predecessors, (1006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 07:00:56,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 688 states to 688 states and 1006 transitions. [2024-10-14 07:00:56,319 INFO L78 Accepts]: Start accepts. Automaton has 688 states and 1006 transitions. Word has length 218 [2024-10-14 07:00:56,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 07:00:56,319 INFO L471 AbstractCegarLoop]: Abstraction has 688 states and 1006 transitions. [2024-10-14 07:00:56,319 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 43.6) internal successors, (218), 4 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) [2024-10-14 07:00:56,320 INFO L276 IsEmpty]: Start isEmpty. Operand 688 states and 1006 transitions. [2024-10-14 07:00:56,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2024-10-14 07:00:56,322 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 07:00:56,322 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 07:00:56,345 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-14 07:00:56,523 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 07:00:56,524 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 07:00:56,525 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 07:00:56,526 INFO L85 PathProgramCache]: Analyzing trace with hash 927318790, now seen corresponding path program 1 times [2024-10-14 07:00:56,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 07:00:56,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275002955] [2024-10-14 07:00:56,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 07:00:56,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 07:00:57,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 07:00:57,490 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 07:00:57,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 07:00:57,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275002955] [2024-10-14 07:00:57,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [275002955] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 07:00:57,490 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 07:00:57,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-14 07:00:57,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421257289] [2024-10-14 07:00:57,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 07:00:57,491 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-14 07:00:57,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 07:00:57,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-14 07:00:57,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-14 07:00:57,492 INFO L87 Difference]: Start difference. First operand 688 states and 1006 transitions. Second operand has 5 states, 5 states have (on average 43.8) internal successors, (219), 4 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 07:00:57,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 07:00:57,580 INFO L93 Difference]: Finished difference Result 1170 states and 1713 transitions. [2024-10-14 07:00:57,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-14 07:00:57,580 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 43.8) internal successors, (219), 4 states have internal predecessors, (219), 0 states have call successors, (0), 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 219 [2024-10-14 07:00:57,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 07:00:57,582 INFO L225 Difference]: With dead ends: 1170 [2024-10-14 07:00:57,583 INFO L226 Difference]: Without dead ends: 686 [2024-10-14 07:00:57,583 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-10-14 07:00:57,584 INFO L432 NwaCegarLoop]: 548 mSDtfsCounter, 1278 mSDsluCounter, 1094 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1278 SdHoareTripleChecker+Valid, 1642 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-14 07:00:57,584 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1278 Valid, 1642 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-14 07:00:57,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 686 states. [2024-10-14 07:00:57,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 686 to 686. [2024-10-14 07:00:57,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 686 states, 685 states have (on average 1.4642335766423358) internal successors, (1003), 685 states have internal predecessors, (1003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 07:00:57,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 686 states to 686 states and 1003 transitions. [2024-10-14 07:00:57,596 INFO L78 Accepts]: Start accepts. Automaton has 686 states and 1003 transitions. Word has length 219 [2024-10-14 07:00:57,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 07:00:57,596 INFO L471 AbstractCegarLoop]: Abstraction has 686 states and 1003 transitions. [2024-10-14 07:00:57,597 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 43.8) internal successors, (219), 4 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 07:00:57,597 INFO L276 IsEmpty]: Start isEmpty. Operand 686 states and 1003 transitions. [2024-10-14 07:00:57,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2024-10-14 07:00:57,598 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 07:00:57,598 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 07:00:57,599 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-10-14 07:00:57,599 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 07:00:57,599 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 07:00:57,599 INFO L85 PathProgramCache]: Analyzing trace with hash -615300958, now seen corresponding path program 1 times [2024-10-14 07:00:57,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 07:00:57,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432105639] [2024-10-14 07:00:57,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 07:00:57,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 07:00:58,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 07:00:58,366 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 07:00:58,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 07:00:58,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432105639] [2024-10-14 07:00:58,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1432105639] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 07:00:58,366 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 07:00:58,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-14 07:00:58,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954649216] [2024-10-14 07:00:58,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 07:00:58,367 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-14 07:00:58,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 07:00:58,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-14 07:00:58,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-14 07:00:58,369 INFO L87 Difference]: Start difference. First operand 686 states and 1003 transitions. Second operand has 5 states, 5 states have (on average 43.8) internal successors, (219), 4 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 07:00:58,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 07:00:58,463 INFO L93 Difference]: Finished difference Result 1202 states and 1759 transitions. [2024-10-14 07:00:58,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-14 07:00:58,466 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 43.8) internal successors, (219), 4 states have internal predecessors, (219), 0 states have call successors, (0), 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 219 [2024-10-14 07:00:58,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 07:00:58,468 INFO L225 Difference]: With dead ends: 1202 [2024-10-14 07:00:58,468 INFO L226 Difference]: Without dead ends: 686 [2024-10-14 07:00:58,471 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-10-14 07:00:58,472 INFO L432 NwaCegarLoop]: 548 mSDtfsCounter, 1293 mSDsluCounter, 1094 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1293 SdHoareTripleChecker+Valid, 1642 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-14 07:00:58,472 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1293 Valid, 1642 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-14 07:00:58,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 686 states. [2024-10-14 07:00:58,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 686 to 686. [2024-10-14 07:00:58,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 686 states, 685 states have (on average 1.4627737226277373) internal successors, (1002), 685 states have internal predecessors, (1002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 07:00:58,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 686 states to 686 states and 1002 transitions. [2024-10-14 07:00:58,483 INFO L78 Accepts]: Start accepts. Automaton has 686 states and 1002 transitions. Word has length 219 [2024-10-14 07:00:58,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 07:00:58,483 INFO L471 AbstractCegarLoop]: Abstraction has 686 states and 1002 transitions. [2024-10-14 07:00:58,483 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 43.8) internal successors, (219), 4 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 07:00:58,483 INFO L276 IsEmpty]: Start isEmpty. Operand 686 states and 1002 transitions. [2024-10-14 07:00:58,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2024-10-14 07:00:58,484 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 07:00:58,485 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 07:00:58,485 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-10-14 07:00:58,485 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 07:00:58,485 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 07:00:58,486 INFO L85 PathProgramCache]: Analyzing trace with hash 1132880277, now seen corresponding path program 1 times [2024-10-14 07:00:58,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 07:00:58,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772181226] [2024-10-14 07:00:58,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 07:00:58,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 07:00:58,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 07:01:00,502 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 07:01:00,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 07:01:00,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772181226] [2024-10-14 07:01:00,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [772181226] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 07:01:00,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [992173259] [2024-10-14 07:01:00,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 07:01:00,503 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 07:01:00,503 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 07:01:00,505 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) [2024-10-14 07:01:00,506 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-14 07:01:01,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 07:01:01,307 INFO L255 TraceCheckSpWp]: Trace formula consists of 1344 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-10-14 07:01:01,320 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 07:01:02,152 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 07:01:02,152 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 07:01:03,027 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 07:01:03,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [992173259] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 07:01:03,029 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 07:01:03,029 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 10] total 27 [2024-10-14 07:01:03,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35145976] [2024-10-14 07:01:03,029 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 07:01:03,030 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-10-14 07:01:03,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 07:01:03,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-10-14 07:01:03,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=659, Unknown=0, NotChecked=0, Total=756 [2024-10-14 07:01:03,033 INFO L87 Difference]: Start difference. First operand 686 states and 1002 transitions. Second operand has 28 states, 28 states have (on average 23.142857142857142) internal successors, (648), 27 states have internal predecessors, (648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 07:01:04,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 07:01:04,138 INFO L93 Difference]: Finished difference Result 2258 states and 3313 transitions. [2024-10-14 07:01:04,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-10-14 07:01:04,138 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 23.142857142857142) internal successors, (648), 27 states have internal predecessors, (648), 0 states have call successors, (0), 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 220 [2024-10-14 07:01:04,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 07:01:04,145 INFO L225 Difference]: With dead ends: 2258 [2024-10-14 07:01:04,146 INFO L226 Difference]: Without dead ends: 1646 [2024-10-14 07:01:04,147 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 465 GetRequests, 422 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 426 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=335, Invalid=1645, Unknown=0, NotChecked=0, Total=1980 [2024-10-14 07:01:04,148 INFO L432 NwaCegarLoop]: 469 mSDtfsCounter, 9347 mSDsluCounter, 7903 mSDsCounter, 0 mSdLazyCounter, 1566 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9347 SdHoareTripleChecker+Valid, 8372 SdHoareTripleChecker+Invalid, 1572 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 1566 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-14 07:01:04,148 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9347 Valid, 8372 Invalid, 1572 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 1566 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-14 07:01:04,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1646 states. [2024-10-14 07:01:04,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1646 to 1287. [2024-10-14 07:01:04,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1287 states, 1286 states have (on average 1.4618973561430793) internal successors, (1880), 1286 states have internal predecessors, (1880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 07:01:04,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1287 states to 1287 states and 1880 transitions. [2024-10-14 07:01:04,167 INFO L78 Accepts]: Start accepts. Automaton has 1287 states and 1880 transitions. Word has length 220 [2024-10-14 07:01:04,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 07:01:04,168 INFO L471 AbstractCegarLoop]: Abstraction has 1287 states and 1880 transitions. [2024-10-14 07:01:04,168 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 23.142857142857142) internal successors, (648), 27 states have internal predecessors, (648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 07:01:04,169 INFO L276 IsEmpty]: Start isEmpty. Operand 1287 states and 1880 transitions. [2024-10-14 07:01:04,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2024-10-14 07:01:04,170 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 07:01:04,170 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 07:01:04,192 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-14 07:01:04,371 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,SelfDestructingSolverStorable22 [2024-10-14 07:01:04,371 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 07:01:04,372 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 07:01:04,372 INFO L85 PathProgramCache]: Analyzing trace with hash 1121894417, now seen corresponding path program 1 times [2024-10-14 07:01:04,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 07:01:04,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211354649] [2024-10-14 07:01:04,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 07:01:04,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 07:01:04,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 07:01:04,847 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 07:01:04,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 07:01:04,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211354649] [2024-10-14 07:01:04,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1211354649] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 07:01:04,848 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 07:01:04,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-14 07:01:04,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955964717] [2024-10-14 07:01:04,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 07:01:04,848 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-14 07:01:04,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 07:01:04,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-14 07:01:04,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-14 07:01:04,849 INFO L87 Difference]: Start difference. First operand 1287 states and 1880 transitions. Second operand has 5 states, 5 states have (on average 44.2) internal successors, (221), 4 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 07:01:04,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 07:01:04,914 INFO L93 Difference]: Finished difference Result 1934 states and 2825 transitions. [2024-10-14 07:01:04,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-14 07:01:04,915 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 44.2) internal successors, (221), 4 states have internal predecessors, (221), 0 states have call successors, (0), 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 221 [2024-10-14 07:01:04,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 07:01:04,919 INFO L225 Difference]: With dead ends: 1934 [2024-10-14 07:01:04,919 INFO L226 Difference]: Without dead ends: 1320 [2024-10-14 07:01:04,920 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-10-14 07:01:04,921 INFO L432 NwaCegarLoop]: 550 mSDtfsCounter, 1405 mSDsluCounter, 1096 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1405 SdHoareTripleChecker+Valid, 1646 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-14 07:01:04,922 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1405 Valid, 1646 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-14 07:01:04,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1320 states. [2024-10-14 07:01:04,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1320 to 1284. [2024-10-14 07:01:04,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1284 states, 1283 states have (on average 1.460639127045986) internal successors, (1874), 1283 states have internal predecessors, (1874), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 07:01:04,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1284 states to 1284 states and 1874 transitions. [2024-10-14 07:01:04,944 INFO L78 Accepts]: Start accepts. Automaton has 1284 states and 1874 transitions. Word has length 221 [2024-10-14 07:01:04,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 07:01:04,945 INFO L471 AbstractCegarLoop]: Abstraction has 1284 states and 1874 transitions. [2024-10-14 07:01:04,945 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 44.2) internal successors, (221), 4 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 07:01:04,945 INFO L276 IsEmpty]: Start isEmpty. Operand 1284 states and 1874 transitions. [2024-10-14 07:01:04,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2024-10-14 07:01:04,947 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 07:01:04,947 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 07:01:04,947 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-10-14 07:01:04,948 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 07:01:04,948 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 07:01:04,949 INFO L85 PathProgramCache]: Analyzing trace with hash -2072639976, now seen corresponding path program 1 times [2024-10-14 07:01:04,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 07:01:04,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450276647] [2024-10-14 07:01:04,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 07:01:04,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 07:01:05,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 07:01:05,478 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 07:01:05,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 07:01:05,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [450276647] [2024-10-14 07:01:05,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [450276647] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 07:01:05,479 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 07:01:05,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-14 07:01:05,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151049301] [2024-10-14 07:01:05,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 07:01:05,480 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-14 07:01:05,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 07:01:05,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-14 07:01:05,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-14 07:01:05,481 INFO L87 Difference]: Start difference. First operand 1284 states and 1874 transitions. Second operand has 6 states, 6 states have (on average 36.833333333333336) internal successors, (221), 5 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 07:01:05,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 07:01:05,560 INFO L93 Difference]: Finished difference Result 1631 states and 2389 transitions. [2024-10-14 07:01:05,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-14 07:01:05,561 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 36.833333333333336) internal successors, (221), 5 states have internal predecessors, (221), 0 states have call successors, (0), 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 221 [2024-10-14 07:01:05,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 07:01:05,563 INFO L225 Difference]: With dead ends: 1631 [2024-10-14 07:01:05,563 INFO L226 Difference]: Without dead ends: 1016 [2024-10-14 07:01:05,564 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-10-14 07:01:05,565 INFO L432 NwaCegarLoop]: 549 mSDtfsCounter, 1375 mSDsluCounter, 1637 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1375 SdHoareTripleChecker+Valid, 2186 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-14 07:01:05,565 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1375 Valid, 2186 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-14 07:01:05,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1016 states. [2024-10-14 07:01:05,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1016 to 1006. [2024-10-14 07:01:05,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1006 states, 1005 states have (on average 1.4686567164179105) internal successors, (1476), 1005 states have internal predecessors, (1476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 07:01:05,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1006 states to 1006 states and 1476 transitions. [2024-10-14 07:01:05,587 INFO L78 Accepts]: Start accepts. Automaton has 1006 states and 1476 transitions. Word has length 221 [2024-10-14 07:01:05,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 07:01:05,588 INFO L471 AbstractCegarLoop]: Abstraction has 1006 states and 1476 transitions. [2024-10-14 07:01:05,588 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 36.833333333333336) internal successors, (221), 5 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 07:01:05,588 INFO L276 IsEmpty]: Start isEmpty. Operand 1006 states and 1476 transitions. [2024-10-14 07:01:05,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 389 [2024-10-14 07:01:05,592 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 07:01:05,593 INFO L215 NwaCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-10-14 07:01:05,593 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-10-14 07:01:05,593 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 07:01:05,594 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 07:01:05,594 INFO L85 PathProgramCache]: Analyzing trace with hash -1765118326, now seen corresponding path program 1 times [2024-10-14 07:01:05,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 07:01:05,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431981101] [2024-10-14 07:01:05,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 07:01:05,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 07:01:08,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 07:01:09,277 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 191 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 07:01:09,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 07:01:09,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431981101] [2024-10-14 07:01:09,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [431981101] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 07:01:09,277 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 07:01:09,278 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-14 07:01:09,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711804788] [2024-10-14 07:01:09,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 07:01:09,278 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-14 07:01:09,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 07:01:09,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-14 07:01:09,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-10-14 07:01:09,280 INFO L87 Difference]: Start difference. First operand 1006 states and 1476 transitions. Second operand has 9 states, 9 states have (on average 43.111111111111114) internal successors, (388), 8 states have internal predecessors, (388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 07:01:09,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 07:01:09,677 INFO L93 Difference]: Finished difference Result 3488 states and 5178 transitions. [2024-10-14 07:01:09,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-10-14 07:01:09,677 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 43.111111111111114) internal successors, (388), 8 states have internal predecessors, (388), 0 states have call successors, (0), 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 388 [2024-10-14 07:01:09,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 07:01:09,685 INFO L225 Difference]: With dead ends: 3488 [2024-10-14 07:01:09,685 INFO L226 Difference]: Without dead ends: 2827 [2024-10-14 07:01:09,687 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2024-10-14 07:01:09,687 INFO L432 NwaCegarLoop]: 917 mSDtfsCounter, 1712 mSDsluCounter, 5082 mSDsCounter, 0 mSdLazyCounter, 689 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1712 SdHoareTripleChecker+Valid, 5999 SdHoareTripleChecker+Invalid, 690 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 689 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-14 07:01:09,688 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1712 Valid, 5999 Invalid, 690 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 689 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-14 07:01:09,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2827 states. [2024-10-14 07:01:09,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2827 to 1657. [2024-10-14 07:01:09,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1657 states, 1656 states have (on average 1.4758454106280192) internal successors, (2444), 1656 states have internal predecessors, (2444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 07:01:09,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1657 states to 1657 states and 2444 transitions. [2024-10-14 07:01:09,722 INFO L78 Accepts]: Start accepts. Automaton has 1657 states and 2444 transitions. Word has length 388 [2024-10-14 07:01:09,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 07:01:09,722 INFO L471 AbstractCegarLoop]: Abstraction has 1657 states and 2444 transitions. [2024-10-14 07:01:09,722 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 43.111111111111114) internal successors, (388), 8 states have internal predecessors, (388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 07:01:09,723 INFO L276 IsEmpty]: Start isEmpty. Operand 1657 states and 2444 transitions. [2024-10-14 07:01:09,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 390 [2024-10-14 07:01:09,726 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 07:01:09,727 INFO L215 NwaCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-10-14 07:01:09,727 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-10-14 07:01:09,727 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 07:01:09,727 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 07:01:09,727 INFO L85 PathProgramCache]: Analyzing trace with hash -531045909, now seen corresponding path program 1 times [2024-10-14 07:01:09,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 07:01:09,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958932285] [2024-10-14 07:01:09,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 07:01:09,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 07:01:12,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 07:01:13,272 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 174 proven. 11 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-10-14 07:01:13,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 07:01:13,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958932285] [2024-10-14 07:01:13,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1958932285] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 07:01:13,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [505201415] [2024-10-14 07:01:13,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 07:01:13,273 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 07:01:13,273 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 07:01:13,277 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) [2024-10-14 07:01:13,278 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-14 07:01:14,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 07:01:14,435 INFO L255 TraceCheckSpWp]: Trace formula consists of 2474 conjuncts, 46 conjuncts are in the unsatisfiable core [2024-10-14 07:01:14,446 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 07:01:15,523 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 141 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 07:01:15,524 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 07:01:16,841 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 141 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 07:01:16,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [505201415] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 07:01:16,841 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 07:01:16,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 9, 9] total 21 [2024-10-14 07:01:16,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213413954] [2024-10-14 07:01:16,842 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 07:01:16,843 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-10-14 07:01:16,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 07:01:16,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-10-14 07:01:16,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=398, Unknown=0, NotChecked=0, Total=462 [2024-10-14 07:01:16,845 INFO L87 Difference]: Start difference. First operand 1657 states and 2444 transitions. Second operand has 22 states, 22 states have (on average 40.77272727272727) internal successors, (897), 21 states have internal predecessors, (897), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 07:01:18,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 07:01:18,271 INFO L93 Difference]: Finished difference Result 5498 states and 8163 transitions. [2024-10-14 07:01:18,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-10-14 07:01:18,272 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 40.77272727272727) internal successors, (897), 21 states have internal predecessors, (897), 0 states have call successors, (0), 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 389 [2024-10-14 07:01:18,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 07:01:18,284 INFO L225 Difference]: With dead ends: 5498 [2024-10-14 07:01:18,284 INFO L226 Difference]: Without dead ends: 4186 [2024-10-14 07:01:18,288 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 813 GetRequests, 762 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 552 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=519, Invalid=2237, Unknown=0, NotChecked=0, Total=2756 [2024-10-14 07:01:18,289 INFO L432 NwaCegarLoop]: 832 mSDtfsCounter, 10418 mSDsluCounter, 8485 mSDsCounter, 0 mSdLazyCounter, 1710 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10418 SdHoareTripleChecker+Valid, 9317 SdHoareTripleChecker+Invalid, 1720 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 1710 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-10-14 07:01:18,289 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10418 Valid, 9317 Invalid, 1720 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 1710 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-10-14 07:01:18,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4186 states. [2024-10-14 07:01:18,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4186 to 2565. [2024-10-14 07:01:18,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2565 states, 2564 states have (on average 1.4719188767550702) internal successors, (3774), 2564 states have internal predecessors, (3774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 07:01:18,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2565 states to 2565 states and 3774 transitions. [2024-10-14 07:01:18,340 INFO L78 Accepts]: Start accepts. Automaton has 2565 states and 3774 transitions. Word has length 389 [2024-10-14 07:01:18,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 07:01:18,340 INFO L471 AbstractCegarLoop]: Abstraction has 2565 states and 3774 transitions. [2024-10-14 07:01:18,341 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 40.77272727272727) internal successors, (897), 21 states have internal predecessors, (897), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 07:01:18,341 INFO L276 IsEmpty]: Start isEmpty. Operand 2565 states and 3774 transitions. [2024-10-14 07:01:18,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 392 [2024-10-14 07:01:18,344 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 07:01:18,345 INFO L215 NwaCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-10-14 07:01:18,370 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-14 07:01:18,545 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 07:01:18,546 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 07:01:18,546 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 07:01:18,546 INFO L85 PathProgramCache]: Analyzing trace with hash -379594251, now seen corresponding path program 1 times [2024-10-14 07:01:18,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 07:01:18,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260700725] [2024-10-14 07:01:18,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 07:01:18,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 07:01:20,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 07:01:21,362 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 177 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-10-14 07:01:21,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 07:01:21,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260700725] [2024-10-14 07:01:21,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [260700725] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 07:01:21,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [10635857] [2024-10-14 07:01:21,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 07:01:21,363 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 07:01:21,363 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 07:01:21,365 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) [2024-10-14 07:01:21,367 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-14 07:01:22,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 07:01:22,510 INFO L255 TraceCheckSpWp]: Trace formula consists of 2478 conjuncts, 46 conjuncts are in the unsatisfiable core [2024-10-14 07:01:22,518 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 07:01:22,976 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 176 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 07:01:22,976 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 07:01:23,368 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 176 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-10-14 07:01:23,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [10635857] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 07:01:23,368 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 07:01:23,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 9, 6] total 15 [2024-10-14 07:01:23,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047228482] [2024-10-14 07:01:23,369 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 07:01:23,370 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-10-14 07:01:23,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 07:01:23,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-10-14 07:01:23,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2024-10-14 07:01:23,372 INFO L87 Difference]: Start difference. First operand 2565 states and 3774 transitions. Second operand has 16 states, 16 states have (on average 47.375) internal successors, (758), 15 states have internal predecessors, (758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 07:01:23,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 07:01:23,606 INFO L93 Difference]: Finished difference Result 4894 states and 7213 transitions. [2024-10-14 07:01:23,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-14 07:01:23,606 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 47.375) internal successors, (758), 15 states have internal predecessors, (758), 0 states have call successors, (0), 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 391 [2024-10-14 07:01:23,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 07:01:23,611 INFO L225 Difference]: With dead ends: 4894 [2024-10-14 07:01:23,611 INFO L226 Difference]: Without dead ends: 2641 [2024-10-14 07:01:23,614 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 793 GetRequests, 771 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=146, Invalid=406, Unknown=0, NotChecked=0, Total=552 [2024-10-14 07:01:23,614 INFO L432 NwaCegarLoop]: 546 mSDtfsCounter, 1979 mSDsluCounter, 3707 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1979 SdHoareTripleChecker+Valid, 4253 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-14 07:01:23,614 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1979 Valid, 4253 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-14 07:01:23,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2641 states. [2024-10-14 07:01:23,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2641 to 2591. [2024-10-14 07:01:23,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2591 states, 2590 states have (on average 1.4671814671814671) internal successors, (3800), 2590 states have internal predecessors, (3800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 07:01:23,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2591 states to 2591 states and 3800 transitions. [2024-10-14 07:01:23,657 INFO L78 Accepts]: Start accepts. Automaton has 2591 states and 3800 transitions. Word has length 391 [2024-10-14 07:01:23,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 07:01:23,658 INFO L471 AbstractCegarLoop]: Abstraction has 2591 states and 3800 transitions. [2024-10-14 07:01:23,658 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 47.375) internal successors, (758), 15 states have internal predecessors, (758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 07:01:23,658 INFO L276 IsEmpty]: Start isEmpty. Operand 2591 states and 3800 transitions. [2024-10-14 07:01:23,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 393 [2024-10-14 07:01:23,662 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 07:01:23,662 INFO L215 NwaCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-10-14 07:01:23,689 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-10-14 07:01:23,863 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-10-14 07:01:23,863 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 07:01:23,864 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 07:01:23,864 INFO L85 PathProgramCache]: Analyzing trace with hash 1059433389, now seen corresponding path program 1 times [2024-10-14 07:01:23,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 07:01:23,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595991466] [2024-10-14 07:01:23,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 07:01:23,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 07:01:25,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 07:01:27,273 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 176 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 07:01:27,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 07:01:27,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595991466] [2024-10-14 07:01:27,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1595991466] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 07:01:27,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [460801323] [2024-10-14 07:01:27,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 07:01:27,273 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 07:01:27,273 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 07:01:27,275 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) [2024-10-14 07:01:27,275 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-14 07:01:28,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 07:01:28,315 INFO L255 TraceCheckSpWp]: Trace formula consists of 2481 conjuncts, 56 conjuncts are in the unsatisfiable core [2024-10-14 07:01:28,323 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 07:01:28,885 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 93 proven. 99 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 07:01:28,885 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 07:01:30,140 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 93 proven. 99 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 07:01:30,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [460801323] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 07:01:30,140 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 07:01:30,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9] total 27 [2024-10-14 07:01:30,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889322521] [2024-10-14 07:01:30,140 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 07:01:30,141 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-10-14 07:01:30,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 07:01:30,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-10-14 07:01:30,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=671, Unknown=0, NotChecked=0, Total=756 [2024-10-14 07:01:30,143 INFO L87 Difference]: Start difference. First operand 2591 states and 3800 transitions. Second operand has 28 states, 28 states have (on average 36.0) internal successors, (1008), 27 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 07:01:32,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 07:01:32,269 INFO L93 Difference]: Finished difference Result 8153 states and 11999 transitions. [2024-10-14 07:01:32,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2024-10-14 07:01:32,270 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 36.0) internal successors, (1008), 27 states have internal predecessors, (1008), 0 states have call successors, (0), 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 392 [2024-10-14 07:01:32,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 07:01:32,279 INFO L225 Difference]: With dead ends: 8153 [2024-10-14 07:01:32,279 INFO L226 Difference]: Without dead ends: 5651 [2024-10-14 07:01:32,284 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 832 GetRequests, 766 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1084 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=813, Invalid=3743, Unknown=0, NotChecked=0, Total=4556 [2024-10-14 07:01:32,285 INFO L432 NwaCegarLoop]: 867 mSDtfsCounter, 14182 mSDsluCounter, 12032 mSDsCounter, 0 mSdLazyCounter, 2285 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14182 SdHoareTripleChecker+Valid, 12899 SdHoareTripleChecker+Invalid, 2300 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 2285 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-10-14 07:01:32,285 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [14182 Valid, 12899 Invalid, 2300 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [15 Valid, 2285 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-10-14 07:01:32,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5651 states. [2024-10-14 07:01:32,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5651 to 3318. [2024-10-14 07:01:32,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3318 states, 3317 states have (on average 1.4645764244799517) internal successors, (4858), 3317 states have internal predecessors, (4858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 07:01:32,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3318 states to 3318 states and 4858 transitions. [2024-10-14 07:01:32,341 INFO L78 Accepts]: Start accepts. Automaton has 3318 states and 4858 transitions. Word has length 392 [2024-10-14 07:01:32,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 07:01:32,341 INFO L471 AbstractCegarLoop]: Abstraction has 3318 states and 4858 transitions. [2024-10-14 07:01:32,342 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 36.0) internal successors, (1008), 27 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 07:01:32,342 INFO L276 IsEmpty]: Start isEmpty. Operand 3318 states and 4858 transitions. [2024-10-14 07:01:32,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 395 [2024-10-14 07:01:32,346 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 07:01:32,346 INFO L215 NwaCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-10-14 07:01:32,373 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-10-14 07:01:32,547 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,SelfDestructingSolverStorable28 [2024-10-14 07:01:32,548 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 07:01:32,548 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 07:01:32,548 INFO L85 PathProgramCache]: Analyzing trace with hash 827925032, now seen corresponding path program 1 times [2024-10-14 07:01:32,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 07:01:32,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199176526] [2024-10-14 07:01:32,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 07:01:32,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 07:01:32,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 07:01:33,231 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2024-10-14 07:01:33,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 07:01:33,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199176526] [2024-10-14 07:01:33,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1199176526] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 07:01:33,231 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 07:01:33,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-14 07:01:33,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818432355] [2024-10-14 07:01:33,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 07:01:33,232 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-14 07:01:33,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 07:01:33,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-14 07:01:33,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-14 07:01:33,233 INFO L87 Difference]: Start difference. First operand 3318 states and 4858 transitions. Second operand has 5 states, 5 states have (on average 50.6) internal successors, (253), 4 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 07:01:33,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 07:01:33,302 INFO L93 Difference]: Finished difference Result 6201 states and 9096 transitions. [2024-10-14 07:01:33,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-14 07:01:33,303 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 50.6) internal successors, (253), 4 states have internal predecessors, (253), 0 states have call successors, (0), 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 394 [2024-10-14 07:01:33,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 07:01:33,308 INFO L225 Difference]: With dead ends: 6201 [2024-10-14 07:01:33,308 INFO L226 Difference]: Without dead ends: 3321 [2024-10-14 07:01:33,311 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-10-14 07:01:33,312 INFO L432 NwaCegarLoop]: 550 mSDtfsCounter, 1342 mSDsluCounter, 1096 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1342 SdHoareTripleChecker+Valid, 1646 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-14 07:01:33,312 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1342 Valid, 1646 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-14 07:01:33,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3321 states. [2024-10-14 07:01:33,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3321 to 3315. [2024-10-14 07:01:33,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3315 states, 3314 states have (on average 1.464091732045866) internal successors, (4852), 3314 states have internal predecessors, (4852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 07:01:33,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3315 states to 3315 states and 4852 transitions. [2024-10-14 07:01:33,351 INFO L78 Accepts]: Start accepts. Automaton has 3315 states and 4852 transitions. Word has length 394 [2024-10-14 07:01:33,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 07:01:33,352 INFO L471 AbstractCegarLoop]: Abstraction has 3315 states and 4852 transitions. [2024-10-14 07:01:33,352 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 50.6) internal successors, (253), 4 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 07:01:33,352 INFO L276 IsEmpty]: Start isEmpty. Operand 3315 states and 4852 transitions. [2024-10-14 07:01:33,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 395 [2024-10-14 07:01:33,356 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 07:01:33,357 INFO L215 NwaCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-10-14 07:01:33,357 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-10-14 07:01:33,357 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 07:01:33,358 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 07:01:33,358 INFO L85 PathProgramCache]: Analyzing trace with hash 1463858799, now seen corresponding path program 1 times [2024-10-14 07:01:33,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 07:01:33,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231253821] [2024-10-14 07:01:33,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 07:01:33,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 07:01:33,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 07:01:34,096 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2024-10-14 07:01:34,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 07:01:34,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231253821] [2024-10-14 07:01:34,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [231253821] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 07:01:34,096 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 07:01:34,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-14 07:01:34,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658972571] [2024-10-14 07:01:34,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 07:01:34,097 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-14 07:01:34,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 07:01:34,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-14 07:01:34,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-14 07:01:34,098 INFO L87 Difference]: Start difference. First operand 3315 states and 4852 transitions. Second operand has 5 states, 5 states have (on average 50.2) internal successors, (251), 4 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 07:01:34,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 07:01:34,149 INFO L93 Difference]: Finished difference Result 5935 states and 8715 transitions. [2024-10-14 07:01:34,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-14 07:01:34,149 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 50.2) internal successors, (251), 4 states have internal predecessors, (251), 0 states have call successors, (0), 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 394 [2024-10-14 07:01:34,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 07:01:34,154 INFO L225 Difference]: With dead ends: 5935 [2024-10-14 07:01:34,154 INFO L226 Difference]: Without dead ends: 3054 [2024-10-14 07:01:34,156 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-10-14 07:01:34,157 INFO L432 NwaCegarLoop]: 550 mSDtfsCounter, 1312 mSDsluCounter, 1095 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1312 SdHoareTripleChecker+Valid, 1645 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-14 07:01:34,158 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1312 Valid, 1645 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-14 07:01:34,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3054 states. [2024-10-14 07:01:34,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3054 to 3054. [2024-10-14 07:01:34,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3054 states, 3053 states have (on average 1.4670815591221749) internal successors, (4479), 3053 states have internal predecessors, (4479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 07:01:34,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3054 states to 3054 states and 4479 transitions. [2024-10-14 07:01:34,196 INFO L78 Accepts]: Start accepts. Automaton has 3054 states and 4479 transitions. Word has length 394 [2024-10-14 07:01:34,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 07:01:34,196 INFO L471 AbstractCegarLoop]: Abstraction has 3054 states and 4479 transitions. [2024-10-14 07:01:34,196 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 50.2) internal successors, (251), 4 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 07:01:34,196 INFO L276 IsEmpty]: Start isEmpty. Operand 3054 states and 4479 transitions. [2024-10-14 07:01:34,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 561 [2024-10-14 07:01:34,202 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 07:01:34,203 INFO L215 NwaCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 07:01:34,203 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-10-14 07:01:34,204 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 07:01:34,205 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 07:01:34,205 INFO L85 PathProgramCache]: Analyzing trace with hash -1105137275, now seen corresponding path program 1 times [2024-10-14 07:01:34,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 07:01:34,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657483032] [2024-10-14 07:01:34,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 07:01:34,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms