./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem16_label46.c --full-output --architecture 32bit -------------------------------------------------------------------------------- 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/eca-rers2012/Problem16_label46.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a1cc389e5dfc11f5f1a9bd8e06cabb85804454f88bb5585f8abdf0bd0d80b3fc --- Real Ultimate output --- This is Ultimate 0.2.5-wip.fs.cvc5-61a6796-m [2024-10-13 23:52:46,043 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-13 23:52:46,113 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-13 23:52:46,119 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-13 23:52:46,120 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-13 23:52:46,155 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-13 23:52:46,156 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-13 23:52:46,156 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-13 23:52:46,157 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-13 23:52:46,158 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-13 23:52:46,158 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-13 23:52:46,159 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-13 23:52:46,159 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-13 23:52:46,160 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-13 23:52:46,160 INFO L153 SettingsManager]: * Use SBE=true [2024-10-13 23:52:46,160 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-13 23:52:46,161 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-13 23:52:46,161 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-13 23:52:46,163 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-13 23:52:46,164 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-13 23:52:46,164 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-13 23:52:46,164 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-13 23:52:46,166 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-13 23:52:46,167 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-13 23:52:46,167 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-13 23:52:46,167 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-13 23:52:46,167 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-13 23:52:46,168 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-13 23:52:46,168 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-13 23:52:46,168 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-13 23:52:46,169 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-13 23:52:46,169 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-13 23:52:46,169 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 23:52:46,170 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-13 23:52:46,170 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-13 23:52:46,173 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-13 23:52:46,174 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-13 23:52:46,174 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-13 23:52:46,174 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-13 23:52:46,174 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-13 23:52:46,175 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-13 23:52:46,175 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-13 23:52:46,175 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a1cc389e5dfc11f5f1a9bd8e06cabb85804454f88bb5585f8abdf0bd0d80b3fc [2024-10-13 23:52:46,449 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-13 23:52:46,468 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-13 23:52:46,473 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-13 23:52:46,474 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-13 23:52:46,475 INFO L274 PluginConnector]: CDTParser initialized [2024-10-13 23:52:46,476 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem16_label46.c [2024-10-13 23:52:47,952 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-13 23:52:48,371 INFO L384 CDTParser]: Found 1 translation units. [2024-10-13 23:52:48,373 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem16_label46.c [2024-10-13 23:52:48,398 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3df45ce07/df0571712d7542ec8404d380ace746b3/FLAGd5b9497cc [2024-10-13 23:52:48,414 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3df45ce07/df0571712d7542ec8404d380ace746b3 [2024-10-13 23:52:48,417 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-13 23:52:48,418 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-13 23:52:48,420 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-13 23:52:48,420 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-13 23:52:48,426 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-13 23:52:48,427 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:52:48" (1/1) ... [2024-10-13 23:52:48,428 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3960c5d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:52:48, skipping insertion in model container [2024-10-13 23:52:48,430 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:52:48" (1/1) ... [2024-10-13 23:52:48,497 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-13 23:52:48,686 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem16_label46.c[1899,1912] [2024-10-13 23:52:49,041 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 23:52:49,054 INFO L200 MainTranslator]: Completed pre-run [2024-10-13 23:52:49,073 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem16_label46.c[1899,1912] [2024-10-13 23:52:49,321 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 23:52:49,342 INFO L204 MainTranslator]: Completed translation [2024-10-13 23:52:49,342 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:52:49 WrapperNode [2024-10-13 23:52:49,343 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-13 23:52:49,344 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-13 23:52:49,344 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-13 23:52:49,344 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-13 23:52:49,351 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:52:49" (1/1) ... [2024-10-13 23:52:49,383 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:52:49" (1/1) ... [2024-10-13 23:52:49,535 INFO L138 Inliner]: procedures = 15, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 1770 [2024-10-13 23:52:49,536 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-13 23:52:49,537 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-13 23:52:49,537 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-13 23:52:49,537 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-13 23:52:49,548 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:52:49" (1/1) ... [2024-10-13 23:52:49,548 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:52:49" (1/1) ... [2024-10-13 23:52:49,571 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:52:49" (1/1) ... [2024-10-13 23:52:49,630 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]. [2024-10-13 23:52:49,630 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:52:49" (1/1) ... [2024-10-13 23:52:49,630 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:52:49" (1/1) ... [2024-10-13 23:52:49,675 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:52:49" (1/1) ... [2024-10-13 23:52:49,694 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:52:49" (1/1) ... [2024-10-13 23:52:49,719 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:52:49" (1/1) ... [2024-10-13 23:52:49,731 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:52:49" (1/1) ... [2024-10-13 23:52:49,752 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-13 23:52:49,754 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-13 23:52:49,754 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-13 23:52:49,754 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-13 23:52:49,756 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:52:49" (1/1) ... [2024-10-13 23:52:49,761 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 23:52:49,771 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 23:52:49,786 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) [2024-10-13 23:52:49,792 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 [2024-10-13 23:52:49,841 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-13 23:52:49,842 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-13 23:52:49,842 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-13 23:52:49,842 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-13 23:52:49,905 INFO L238 CfgBuilder]: Building ICFG [2024-10-13 23:52:49,907 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-13 23:52:51,935 INFO L? ?]: Removed 276 outVars from TransFormulas that were not future-live. [2024-10-13 23:52:51,936 INFO L287 CfgBuilder]: Performing block encoding [2024-10-13 23:52:51,991 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-13 23:52:51,991 INFO L314 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-13 23:52:51,991 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:52:51 BoogieIcfgContainer [2024-10-13 23:52:51,992 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-13 23:52:51,994 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-13 23:52:51,994 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-13 23:52:52,000 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-13 23:52:52,001 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 11:52:48" (1/3) ... [2024-10-13 23:52:52,001 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7eefdf0c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:52:52, skipping insertion in model container [2024-10-13 23:52:52,002 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:52:49" (2/3) ... [2024-10-13 23:52:52,002 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7eefdf0c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:52:52, skipping insertion in model container [2024-10-13 23:52:52,002 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:52:51" (3/3) ... [2024-10-13 23:52:52,004 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem16_label46.c [2024-10-13 23:52:52,021 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-13 23:52:52,022 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-13 23:52:52,102 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-13 23:52:52,110 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;@29069afc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-13 23:52:52,111 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-13 23:52:52,116 INFO L276 IsEmpty]: Start isEmpty. Operand has 334 states, 332 states have (on average 1.9909638554216869) internal successors, (661), 333 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) [2024-10-13 23:52:52,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-10-13 23:52:52,123 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 23:52:52,125 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 23:52:52,126 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 23:52:52,132 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 23:52:52,132 INFO L85 PathProgramCache]: Analyzing trace with hash -1073666091, now seen corresponding path program 1 times [2024-10-13 23:52:52,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 23:52:52,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568176769] [2024-10-13 23:52:52,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:52:52,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 23:52:52,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:52:52,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 23:52:52,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 23:52:52,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568176769] [2024-10-13 23:52:52,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [568176769] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 23:52:52,321 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 23:52:52,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 23:52:52,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155340094] [2024-10-13 23:52:52,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 23:52:52,330 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-13 23:52:52,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 23:52:52,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-13 23:52:52,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-13 23:52:52,359 INFO L87 Difference]: Start difference. First operand has 334 states, 332 states have (on average 1.9909638554216869) internal successors, (661), 333 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) Second operand has 2 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:52:52,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 23:52:52,432 INFO L93 Difference]: Finished difference Result 667 states and 1321 transitions. [2024-10-13 23:52:52,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-13 23:52:52,437 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 0 states have call successors, (0), 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 15 [2024-10-13 23:52:52,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 23:52:52,449 INFO L225 Difference]: With dead ends: 667 [2024-10-13 23:52:52,449 INFO L226 Difference]: Without dead ends: 332 [2024-10-13 23:52:52,453 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-13 23:52:52,456 INFO L432 NwaCegarLoop]: 596 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 596 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-13 23:52:52,459 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 596 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-13 23:52:52,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2024-10-13 23:52:52,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 332. [2024-10-13 23:52:52,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 332 states, 331 states have (on average 1.8006042296072509) internal successors, (596), 331 states have internal predecessors, (596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:52:52,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 332 states to 332 states and 596 transitions. [2024-10-13 23:52:52,515 INFO L78 Accepts]: Start accepts. Automaton has 332 states and 596 transitions. Word has length 15 [2024-10-13 23:52:52,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 23:52:52,515 INFO L471 AbstractCegarLoop]: Abstraction has 332 states and 596 transitions. [2024-10-13 23:52:52,516 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:52:52,516 INFO L276 IsEmpty]: Start isEmpty. Operand 332 states and 596 transitions. [2024-10-13 23:52:52,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-10-13 23:52:52,516 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 23:52:52,516 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 23:52:52,517 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-13 23:52:52,517 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 23:52:52,517 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 23:52:52,517 INFO L85 PathProgramCache]: Analyzing trace with hash -1073528330, now seen corresponding path program 1 times [2024-10-13 23:52:52,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 23:52:52,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [371703275] [2024-10-13 23:52:52,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:52:52,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 23:52:52,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:52:52,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 23:52:52,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 23:52:52,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [371703275] [2024-10-13 23:52:52,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [371703275] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 23:52:52,647 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 23:52:52,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 23:52:52,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811671880] [2024-10-13 23:52:52,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 23:52:52,650 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 23:52:52,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 23:52:52,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 23:52:52,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 23:52:52,652 INFO L87 Difference]: Start difference. First operand 332 states and 596 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 2 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:52:54,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 23:52:54,149 INFO L93 Difference]: Finished difference Result 992 states and 1785 transitions. [2024-10-13 23:52:54,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 23:52:54,150 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 2 states have internal predecessors, (15), 0 states have call successors, (0), 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 15 [2024-10-13 23:52:54,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 23:52:54,154 INFO L225 Difference]: With dead ends: 992 [2024-10-13 23:52:54,154 INFO L226 Difference]: Without dead ends: 661 [2024-10-13 23:52:54,156 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 23:52:54,160 INFO L432 NwaCegarLoop]: 194 mSDtfsCounter, 355 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 805 mSolverCounterSat, 390 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 355 SdHoareTripleChecker+Valid, 199 SdHoareTripleChecker+Invalid, 1195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 390 IncrementalHoareTripleChecker+Valid, 805 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-10-13 23:52:54,160 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [355 Valid, 199 Invalid, 1195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [390 Valid, 805 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-10-13 23:52:54,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 661 states. [2024-10-13 23:52:54,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 661 to 661. [2024-10-13 23:52:54,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 661 states, 660 states have (on average 1.5196969696969698) internal successors, (1003), 660 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) [2024-10-13 23:52:54,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 661 states to 661 states and 1003 transitions. [2024-10-13 23:52:54,216 INFO L78 Accepts]: Start accepts. Automaton has 661 states and 1003 transitions. Word has length 15 [2024-10-13 23:52:54,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 23:52:54,216 INFO L471 AbstractCegarLoop]: Abstraction has 661 states and 1003 transitions. [2024-10-13 23:52:54,216 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 2 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:52:54,217 INFO L276 IsEmpty]: Start isEmpty. Operand 661 states and 1003 transitions. [2024-10-13 23:52:54,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2024-10-13 23:52:54,218 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 23:52:54,219 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 23:52:54,219 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-13 23:52:54,221 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 23:52:54,222 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 23:52:54,222 INFO L85 PathProgramCache]: Analyzing trace with hash 1819705616, now seen corresponding path program 1 times [2024-10-13 23:52:54,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 23:52:54,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791265677] [2024-10-13 23:52:54,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:52:54,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 23:52:54,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:52:54,484 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 23:52:54,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 23:52:54,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791265677] [2024-10-13 23:52:54,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1791265677] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 23:52:54,485 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 23:52:54,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 23:52:54,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879790685] [2024-10-13 23:52:54,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 23:52:54,486 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 23:52:54,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 23:52:54,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 23:52:54,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 23:52:54,491 INFO L87 Difference]: Start difference. First operand 661 states and 1003 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 2 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:52:55,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 23:52:55,902 INFO L93 Difference]: Finished difference Result 1979 states and 3006 transitions. [2024-10-13 23:52:55,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 23:52:55,903 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 2 states have internal predecessors, (83), 0 states have call successors, (0), 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 83 [2024-10-13 23:52:55,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 23:52:55,909 INFO L225 Difference]: With dead ends: 1979 [2024-10-13 23:52:55,909 INFO L226 Difference]: Without dead ends: 1319 [2024-10-13 23:52:55,910 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 23:52:55,912 INFO L432 NwaCegarLoop]: 210 mSDtfsCounter, 268 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 962 mSolverCounterSat, 299 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 268 SdHoareTripleChecker+Valid, 215 SdHoareTripleChecker+Invalid, 1261 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 299 IncrementalHoareTripleChecker+Valid, 962 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-10-13 23:52:55,912 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [268 Valid, 215 Invalid, 1261 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [299 Valid, 962 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-10-13 23:52:55,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1319 states. [2024-10-13 23:52:55,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1319 to 1319. [2024-10-13 23:52:55,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1319 states, 1318 states have (on average 1.4559939301972686) internal successors, (1919), 1318 states have internal predecessors, (1919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:52:55,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1319 states to 1319 states and 1919 transitions. [2024-10-13 23:52:55,956 INFO L78 Accepts]: Start accepts. Automaton has 1319 states and 1919 transitions. Word has length 83 [2024-10-13 23:52:55,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 23:52:55,957 INFO L471 AbstractCegarLoop]: Abstraction has 1319 states and 1919 transitions. [2024-10-13 23:52:55,957 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 2 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:52:55,957 INFO L276 IsEmpty]: Start isEmpty. Operand 1319 states and 1919 transitions. [2024-10-13 23:52:55,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2024-10-13 23:52:55,960 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 23:52:55,960 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 23:52:55,960 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-13 23:52:55,961 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 23:52:55,962 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 23:52:55,962 INFO L85 PathProgramCache]: Analyzing trace with hash -823055311, now seen corresponding path program 1 times [2024-10-13 23:52:55,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 23:52:55,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074674784] [2024-10-13 23:52:55,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:52:55,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 23:52:55,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:52:56,095 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 23:52:56,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 23:52:56,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074674784] [2024-10-13 23:52:56,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2074674784] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 23:52:56,096 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 23:52:56,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 23:52:56,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811505235] [2024-10-13 23:52:56,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 23:52:56,097 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 23:52:56,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 23:52:56,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 23:52:56,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 23:52:56,098 INFO L87 Difference]: Start difference. First operand 1319 states and 1919 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 2 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:52:57,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 23:52:57,526 INFO L93 Difference]: Finished difference Result 3953 states and 5754 transitions. [2024-10-13 23:52:57,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 23:52:57,527 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 2 states have internal predecessors, (94), 0 states have call successors, (0), 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 94 [2024-10-13 23:52:57,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 23:52:57,536 INFO L225 Difference]: With dead ends: 3953 [2024-10-13 23:52:57,536 INFO L226 Difference]: Without dead ends: 2635 [2024-10-13 23:52:57,538 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 23:52:57,539 INFO L432 NwaCegarLoop]: 149 mSDtfsCounter, 369 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 812 mSolverCounterSat, 368 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 369 SdHoareTripleChecker+Valid, 153 SdHoareTripleChecker+Invalid, 1180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 368 IncrementalHoareTripleChecker+Valid, 812 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-10-13 23:52:57,540 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [369 Valid, 153 Invalid, 1180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [368 Valid, 812 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-10-13 23:52:57,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2635 states. [2024-10-13 23:52:57,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2635 to 2635. [2024-10-13 23:52:57,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2635 states, 2634 states have (on average 1.3242217160212604) internal successors, (3488), 2634 states have internal predecessors, (3488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:52:57,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2635 states to 2635 states and 3488 transitions. [2024-10-13 23:52:57,593 INFO L78 Accepts]: Start accepts. Automaton has 2635 states and 3488 transitions. Word has length 94 [2024-10-13 23:52:57,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 23:52:57,594 INFO L471 AbstractCegarLoop]: Abstraction has 2635 states and 3488 transitions. [2024-10-13 23:52:57,594 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 2 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:52:57,595 INFO L276 IsEmpty]: Start isEmpty. Operand 2635 states and 3488 transitions. [2024-10-13 23:52:57,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2024-10-13 23:52:57,600 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 23:52:57,601 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 23:52:57,601 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-13 23:52:57,601 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 23:52:57,602 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 23:52:57,602 INFO L85 PathProgramCache]: Analyzing trace with hash -723752210, now seen corresponding path program 1 times [2024-10-13 23:52:57,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 23:52:57,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [860005057] [2024-10-13 23:52:57,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:52:57,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 23:52:57,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:52:57,873 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 78 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-10-13 23:52:57,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 23:52:57,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [860005057] [2024-10-13 23:52:57,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [860005057] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 23:52:57,874 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 23:52:57,874 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 23:52:57,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035102883] [2024-10-13 23:52:57,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 23:52:57,875 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 23:52:57,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 23:52:57,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 23:52:57,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 23:52:57,878 INFO L87 Difference]: Start difference. First operand 2635 states and 3488 transitions. Second operand has 3 states, 3 states have (on average 66.33333333333333) internal successors, (199), 2 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:52:59,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 23:52:59,194 INFO L93 Difference]: Finished difference Result 6585 states and 8544 transitions. [2024-10-13 23:52:59,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 23:52:59,195 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 66.33333333333333) internal successors, (199), 2 states have internal predecessors, (199), 0 states have call successors, (0), 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 [2024-10-13 23:52:59,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 23:52:59,208 INFO L225 Difference]: With dead ends: 6585 [2024-10-13 23:52:59,208 INFO L226 Difference]: Without dead ends: 3951 [2024-10-13 23:52:59,212 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 23:52:59,213 INFO L432 NwaCegarLoop]: 78 mSDtfsCounter, 277 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 884 mSolverCounterSat, 264 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 277 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 1148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 264 IncrementalHoareTripleChecker+Valid, 884 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-10-13 23:52:59,214 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [277 Valid, 82 Invalid, 1148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [264 Valid, 884 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-10-13 23:52:59,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3951 states. [2024-10-13 23:52:59,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3951 to 3951. [2024-10-13 23:52:59,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3951 states, 3950 states have (on average 1.2164556962025317) internal successors, (4805), 3950 states have internal predecessors, (4805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:52:59,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3951 states to 3951 states and 4805 transitions. [2024-10-13 23:52:59,282 INFO L78 Accepts]: Start accepts. Automaton has 3951 states and 4805 transitions. Word has length 212 [2024-10-13 23:52:59,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 23:52:59,284 INFO L471 AbstractCegarLoop]: Abstraction has 3951 states and 4805 transitions. [2024-10-13 23:52:59,285 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 66.33333333333333) internal successors, (199), 2 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:52:59,285 INFO L276 IsEmpty]: Start isEmpty. Operand 3951 states and 4805 transitions. [2024-10-13 23:52:59,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2024-10-13 23:52:59,292 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 23:52:59,293 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 23:52:59,293 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-13 23:52:59,293 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 23:52:59,293 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 23:52:59,294 INFO L85 PathProgramCache]: Analyzing trace with hash 2091867922, now seen corresponding path program 1 times [2024-10-13 23:52:59,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 23:52:59,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701956535] [2024-10-13 23:52:59,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:52:59,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 23:52:59,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:52:59,952 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 23:52:59,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 23:52:59,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1701956535] [2024-10-13 23:52:59,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1701956535] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 23:52:59,955 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 23:52:59,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 23:52:59,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723828849] [2024-10-13 23:52:59,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 23:52:59,957 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 23:52:59,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 23:52:59,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 23:52:59,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 23:52:59,960 INFO L87 Difference]: Start difference. First operand 3951 states and 4805 transitions. Second operand has 4 states, 4 states have (on average 65.0) internal successors, (260), 3 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:53:01,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 23:53:01,211 INFO L93 Difference]: Finished difference Result 8230 states and 9950 transitions. [2024-10-13 23:53:01,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 23:53:01,212 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 65.0) internal successors, (260), 3 states have internal predecessors, (260), 0 states have call successors, (0), 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 260 [2024-10-13 23:53:01,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 23:53:01,229 INFO L225 Difference]: With dead ends: 8230 [2024-10-13 23:53:01,230 INFO L226 Difference]: Without dead ends: 4280 [2024-10-13 23:53:01,237 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-13 23:53:01,239 INFO L432 NwaCegarLoop]: 265 mSDtfsCounter, 127 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 1471 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 318 SdHoareTripleChecker+Invalid, 1476 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 1471 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-10-13 23:53:01,241 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [127 Valid, 318 Invalid, 1476 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 1471 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-10-13 23:53:01,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4280 states. [2024-10-13 23:53:01,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4280 to 4280. [2024-10-13 23:53:01,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4280 states, 4279 states have (on average 1.2012152372049545) internal successors, (5140), 4279 states have internal predecessors, (5140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:53:01,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4280 states to 4280 states and 5140 transitions. [2024-10-13 23:53:01,331 INFO L78 Accepts]: Start accepts. Automaton has 4280 states and 5140 transitions. Word has length 260 [2024-10-13 23:53:01,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 23:53:01,332 INFO L471 AbstractCegarLoop]: Abstraction has 4280 states and 5140 transitions. [2024-10-13 23:53:01,332 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 65.0) internal successors, (260), 3 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:53:01,332 INFO L276 IsEmpty]: Start isEmpty. Operand 4280 states and 5140 transitions. [2024-10-13 23:53:01,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 348 [2024-10-13 23:53:01,337 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 23:53:01,338 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 23:53:01,338 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-13 23:53:01,338 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 23:53:01,338 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 23:53:01,339 INFO L85 PathProgramCache]: Analyzing trace with hash -1980827317, now seen corresponding path program 1 times [2024-10-13 23:53:01,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 23:53:01,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753301024] [2024-10-13 23:53:01,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:53:01,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 23:53:01,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:53:01,976 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 113 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 23:53:01,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 23:53:01,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753301024] [2024-10-13 23:53:01,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [753301024] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 23:53:01,977 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 23:53:01,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-13 23:53:01,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350769943] [2024-10-13 23:53:01,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 23:53:01,978 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-13 23:53:01,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 23:53:01,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-13 23:53:01,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-10-13 23:53:01,979 INFO L87 Difference]: Start difference. First operand 4280 states and 5140 transitions. Second operand has 7 states, 7 states have (on average 49.57142857142857) internal successors, (347), 6 states have internal predecessors, (347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:53:03,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 23:53:03,890 INFO L93 Difference]: Finished difference Result 8089 states and 9791 transitions. [2024-10-13 23:53:03,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-13 23:53:03,890 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 49.57142857142857) internal successors, (347), 6 states have internal predecessors, (347), 0 states have call successors, (0), 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 347 [2024-10-13 23:53:03,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 23:53:03,903 INFO L225 Difference]: With dead ends: 8089 [2024-10-13 23:53:03,903 INFO L226 Difference]: Without dead ends: 3951 [2024-10-13 23:53:03,909 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-10-13 23:53:03,910 INFO L432 NwaCegarLoop]: 261 mSDtfsCounter, 295 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 2265 mSolverCounterSat, 345 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 295 SdHoareTripleChecker+Valid, 293 SdHoareTripleChecker+Invalid, 2610 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 345 IncrementalHoareTripleChecker+Valid, 2265 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-10-13 23:53:03,911 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [295 Valid, 293 Invalid, 2610 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [345 Valid, 2265 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-10-13 23:53:03,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3951 states. [2024-10-13 23:53:03,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3951 to 3951. [2024-10-13 23:53:03,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3951 states, 3950 states have (on average 1.080253164556962) internal successors, (4267), 3950 states have internal predecessors, (4267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:53:03,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3951 states to 3951 states and 4267 transitions. [2024-10-13 23:53:03,977 INFO L78 Accepts]: Start accepts. Automaton has 3951 states and 4267 transitions. Word has length 347 [2024-10-13 23:53:03,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 23:53:03,977 INFO L471 AbstractCegarLoop]: Abstraction has 3951 states and 4267 transitions. [2024-10-13 23:53:03,977 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 49.57142857142857) internal successors, (347), 6 states have internal predecessors, (347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:53:03,978 INFO L276 IsEmpty]: Start isEmpty. Operand 3951 states and 4267 transitions. [2024-10-13 23:53:03,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 355 [2024-10-13 23:53:03,981 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 23:53:03,982 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 23:53:03,982 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-13 23:53:03,982 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 23:53:03,983 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 23:53:03,983 INFO L85 PathProgramCache]: Analyzing trace with hash -96401109, now seen corresponding path program 1 times [2024-10-13 23:53:03,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 23:53:03,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193876782] [2024-10-13 23:53:03,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:53:03,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 23:53:04,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:53:04,351 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2024-10-13 23:53:04,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 23:53:04,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193876782] [2024-10-13 23:53:04,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [193876782] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 23:53:04,351 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 23:53:04,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 23:53:04,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727812210] [2024-10-13 23:53:04,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 23:53:04,352 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 23:53:04,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 23:53:04,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 23:53:04,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 23:53:04,353 INFO L87 Difference]: Start difference. First operand 3951 states and 4267 transitions. Second operand has 3 states, 3 states have (on average 86.66666666666667) internal successors, (260), 3 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:53:05,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 23:53:05,202 INFO L93 Difference]: Finished difference Result 9217 states and 10059 transitions. [2024-10-13 23:53:05,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 23:53:05,202 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 86.66666666666667) internal successors, (260), 3 states have internal predecessors, (260), 0 states have call successors, (0), 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 354 [2024-10-13 23:53:05,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 23:53:05,220 INFO L225 Difference]: With dead ends: 9217 [2024-10-13 23:53:05,220 INFO L226 Difference]: Without dead ends: 5596 [2024-10-13 23:53:05,225 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 23:53:05,226 INFO L432 NwaCegarLoop]: 398 mSDtfsCounter, 319 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 760 mSolverCounterSat, 124 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 319 SdHoareTripleChecker+Valid, 403 SdHoareTripleChecker+Invalid, 884 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 124 IncrementalHoareTripleChecker+Valid, 760 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-10-13 23:53:05,226 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [319 Valid, 403 Invalid, 884 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [124 Valid, 760 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-10-13 23:53:05,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5596 states. [2024-10-13 23:53:05,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5596 to 5596. [2024-10-13 23:53:05,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5596 states, 5595 states have (on average 1.0748882931188561) internal successors, (6014), 5595 states have internal predecessors, (6014), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:53:05,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5596 states to 5596 states and 6014 transitions. [2024-10-13 23:53:05,309 INFO L78 Accepts]: Start accepts. Automaton has 5596 states and 6014 transitions. Word has length 354 [2024-10-13 23:53:05,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 23:53:05,310 INFO L471 AbstractCegarLoop]: Abstraction has 5596 states and 6014 transitions. [2024-10-13 23:53:05,310 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 86.66666666666667) internal successors, (260), 3 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:53:05,310 INFO L276 IsEmpty]: Start isEmpty. Operand 5596 states and 6014 transitions. [2024-10-13 23:53:05,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 410 [2024-10-13 23:53:05,316 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 23:53:05,317 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 23:53:05,317 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-13 23:53:05,317 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 23:53:05,318 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 23:53:05,318 INFO L85 PathProgramCache]: Analyzing trace with hash -398479596, now seen corresponding path program 1 times [2024-10-13 23:53:05,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 23:53:05,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822284721] [2024-10-13 23:53:05,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:53:05,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 23:53:05,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:53:05,661 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 185 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 23:53:05,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 23:53:05,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [822284721] [2024-10-13 23:53:05,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [822284721] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 23:53:05,662 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 23:53:05,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 23:53:05,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492989899] [2024-10-13 23:53:05,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 23:53:05,664 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 23:53:05,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 23:53:05,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 23:53:05,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 23:53:05,666 INFO L87 Difference]: Start difference. First operand 5596 states and 6014 transitions. Second operand has 3 states, 3 states have (on average 136.33333333333334) internal successors, (409), 3 states have internal predecessors, (409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:53:06,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 23:53:06,569 INFO L93 Difference]: Finished difference Result 10862 states and 11696 transitions. [2024-10-13 23:53:06,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 23:53:06,575 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 136.33333333333334) internal successors, (409), 3 states have internal predecessors, (409), 0 states have call successors, (0), 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 409 [2024-10-13 23:53:06,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 23:53:06,602 INFO L225 Difference]: With dead ends: 10862 [2024-10-13 23:53:06,602 INFO L226 Difference]: Without dead ends: 5596 [2024-10-13 23:53:06,608 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 23:53:06,610 INFO L432 NwaCegarLoop]: 410 mSDtfsCounter, 178 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 768 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 414 SdHoareTripleChecker+Invalid, 856 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 768 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-10-13 23:53:06,611 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [178 Valid, 414 Invalid, 856 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 768 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-10-13 23:53:06,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5596 states. [2024-10-13 23:53:06,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5596 to 5596. [2024-10-13 23:53:06,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5596 states, 5595 states have (on average 1.0491510277033065) internal successors, (5870), 5595 states have internal predecessors, (5870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:53:06,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5596 states to 5596 states and 5870 transitions. [2024-10-13 23:53:06,696 INFO L78 Accepts]: Start accepts. Automaton has 5596 states and 5870 transitions. Word has length 409 [2024-10-13 23:53:06,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 23:53:06,697 INFO L471 AbstractCegarLoop]: Abstraction has 5596 states and 5870 transitions. [2024-10-13 23:53:06,700 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 136.33333333333334) internal successors, (409), 3 states have internal predecessors, (409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:53:06,701 INFO L276 IsEmpty]: Start isEmpty. Operand 5596 states and 5870 transitions. [2024-10-13 23:53:06,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 494 [2024-10-13 23:53:06,711 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 23:53:06,711 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 23:53:06,711 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-13 23:53:06,711 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 23:53:06,715 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 23:53:06,715 INFO L85 PathProgramCache]: Analyzing trace with hash -2088439446, now seen corresponding path program 1 times [2024-10-13 23:53:06,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 23:53:06,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331345831] [2024-10-13 23:53:06,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:53:06,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 23:53:06,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:53:07,254 INFO L134 CoverageAnalysis]: Checked inductivity of 261 backedges. 261 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 23:53:07,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 23:53:07,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [331345831] [2024-10-13 23:53:07,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [331345831] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 23:53:07,255 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 23:53:07,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 23:53:07,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492321986] [2024-10-13 23:53:07,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 23:53:07,256 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 23:53:07,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 23:53:07,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 23:53:07,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-13 23:53:07,261 INFO L87 Difference]: Start difference. First operand 5596 states and 5870 transitions. Second operand has 4 states, 4 states have (on average 123.25) internal successors, (493), 3 states have internal predecessors, (493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:53:08,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 23:53:08,666 INFO L93 Difference]: Finished difference Result 16455 states and 17282 transitions. [2024-10-13 23:53:08,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 23:53:08,667 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 123.25) internal successors, (493), 3 states have internal predecessors, (493), 0 states have call successors, (0), 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 493 [2024-10-13 23:53:08,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 23:53:08,684 INFO L225 Difference]: With dead ends: 16455 [2024-10-13 23:53:08,684 INFO L226 Difference]: Without dead ends: 11189 [2024-10-13 23:53:08,691 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-13 23:53:08,692 INFO L432 NwaCegarLoop]: 87 mSDtfsCounter, 192 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 1621 mSolverCounterSat, 113 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 192 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 1734 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 113 IncrementalHoareTripleChecker+Valid, 1621 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-10-13 23:53:08,692 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [192 Valid, 95 Invalid, 1734 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [113 Valid, 1621 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-10-13 23:53:08,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11189 states. [2024-10-13 23:53:08,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11189 to 9215. [2024-10-13 23:53:08,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9215 states, 9214 states have (on average 1.0493813761667028) internal successors, (9669), 9214 states have internal predecessors, (9669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:53:08,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9215 states to 9215 states and 9669 transitions. [2024-10-13 23:53:08,827 INFO L78 Accepts]: Start accepts. Automaton has 9215 states and 9669 transitions. Word has length 493 [2024-10-13 23:53:08,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 23:53:08,828 INFO L471 AbstractCegarLoop]: Abstraction has 9215 states and 9669 transitions. [2024-10-13 23:53:08,828 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 123.25) internal successors, (493), 3 states have internal predecessors, (493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:53:08,828 INFO L276 IsEmpty]: Start isEmpty. Operand 9215 states and 9669 transitions. [2024-10-13 23:53:08,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 514 [2024-10-13 23:53:08,837 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 23:53:08,838 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 23:53:08,839 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-13 23:53:08,839 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 23:53:08,839 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 23:53:08,839 INFO L85 PathProgramCache]: Analyzing trace with hash -148858476, now seen corresponding path program 1 times [2024-10-13 23:53:08,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 23:53:08,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609303350] [2024-10-13 23:53:08,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:53:08,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 23:53:08,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:53:09,208 INFO L134 CoverageAnalysis]: Checked inductivity of 390 backedges. 295 proven. 0 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2024-10-13 23:53:09,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 23:53:09,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609303350] [2024-10-13 23:53:09,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1609303350] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 23:53:09,211 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 23:53:09,211 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 23:53:09,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182250048] [2024-10-13 23:53:09,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 23:53:09,212 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 23:53:09,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 23:53:09,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 23:53:09,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 23:53:09,213 INFO L87 Difference]: Start difference. First operand 9215 states and 9669 transitions. Second operand has 3 states, 3 states have (on average 139.66666666666666) internal successors, (419), 3 states have internal predecessors, (419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:53:09,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 23:53:09,973 INFO L93 Difference]: Finished difference Result 21061 states and 22143 transitions. [2024-10-13 23:53:09,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 23:53:09,973 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 139.66666666666666) internal successors, (419), 3 states have internal predecessors, (419), 0 states have call successors, (0), 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 513 [2024-10-13 23:53:09,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 23:53:09,993 INFO L225 Difference]: With dead ends: 21061 [2024-10-13 23:53:09,993 INFO L226 Difference]: Without dead ends: 12176 [2024-10-13 23:53:10,003 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 23:53:10,004 INFO L432 NwaCegarLoop]: 32 mSDtfsCounter, 189 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 770 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 189 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 856 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 770 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-13 23:53:10,004 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [189 Valid, 36 Invalid, 856 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 770 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-13 23:53:10,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12176 states. [2024-10-13 23:53:10,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12176 to 11518. [2024-10-13 23:53:10,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11518 states, 11517 states have (on average 1.046800382043935) internal successors, (12056), 11517 states have internal predecessors, (12056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:53:10,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11518 states to 11518 states and 12056 transitions. [2024-10-13 23:53:10,155 INFO L78 Accepts]: Start accepts. Automaton has 11518 states and 12056 transitions. Word has length 513 [2024-10-13 23:53:10,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 23:53:10,156 INFO L471 AbstractCegarLoop]: Abstraction has 11518 states and 12056 transitions. [2024-10-13 23:53:10,156 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 139.66666666666666) internal successors, (419), 3 states have internal predecessors, (419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:53:10,157 INFO L276 IsEmpty]: Start isEmpty. Operand 11518 states and 12056 transitions. [2024-10-13 23:53:10,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 568 [2024-10-13 23:53:10,161 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 23:53:10,161 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 23:53:10,162 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-13 23:53:10,162 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 23:53:10,162 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 23:53:10,162 INFO L85 PathProgramCache]: Analyzing trace with hash 1637746779, now seen corresponding path program 1 times [2024-10-13 23:53:10,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 23:53:10,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197371895] [2024-10-13 23:53:10,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:53:10,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 23:53:10,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:53:11,513 INFO L134 CoverageAnalysis]: Checked inductivity of 514 backedges. 344 proven. 156 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-10-13 23:53:11,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 23:53:11,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197371895] [2024-10-13 23:53:11,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [197371895] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 23:53:11,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [919570164] [2024-10-13 23:53:11,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:53:11,514 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 23:53:11,514 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 23:53:11,516 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) [2024-10-13 23:53:11,517 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-13 23:53:11,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:53:11,709 INFO L255 TraceCheckSpWp]: Trace formula consists of 683 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-13 23:53:11,723 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 23:53:11,966 INFO L134 CoverageAnalysis]: Checked inductivity of 514 backedges. 357 proven. 0 refuted. 0 times theorem prover too weak. 157 trivial. 0 not checked. [2024-10-13 23:53:11,967 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 23:53:11,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [919570164] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 23:53:11,967 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-13 23:53:11,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2024-10-13 23:53:11,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562250911] [2024-10-13 23:53:11,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 23:53:11,968 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 23:53:11,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 23:53:11,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 23:53:11,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-10-13 23:53:11,970 INFO L87 Difference]: Start difference. First operand 11518 states and 12056 transitions. Second operand has 3 states, 3 states have (on average 137.0) internal successors, (411), 3 states have internal predecessors, (411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:53:12,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 23:53:12,732 INFO L93 Difference]: Finished difference Result 25667 states and 26945 transitions. [2024-10-13 23:53:12,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 23:53:12,732 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 137.0) internal successors, (411), 3 states have internal predecessors, (411), 0 states have call successors, (0), 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 567 [2024-10-13 23:53:12,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 23:53:12,757 INFO L225 Difference]: With dead ends: 25667 [2024-10-13 23:53:12,757 INFO L226 Difference]: Without dead ends: 14479 [2024-10-13 23:53:12,769 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 571 GetRequests, 566 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-10-13 23:53:12,770 INFO L432 NwaCegarLoop]: 434 mSDtfsCounter, 173 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 780 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 439 SdHoareTripleChecker+Invalid, 826 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 780 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-13 23:53:12,771 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [173 Valid, 439 Invalid, 826 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 780 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-13 23:53:12,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14479 states. [2024-10-13 23:53:12,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14479 to 13821. [2024-10-13 23:53:12,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13821 states, 13820 states have (on average 1.045151953690304) internal successors, (14444), 13820 states have internal predecessors, (14444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:53:12,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13821 states to 13821 states and 14444 transitions. [2024-10-13 23:53:12,939 INFO L78 Accepts]: Start accepts. Automaton has 13821 states and 14444 transitions. Word has length 567 [2024-10-13 23:53:12,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 23:53:12,940 INFO L471 AbstractCegarLoop]: Abstraction has 13821 states and 14444 transitions. [2024-10-13 23:53:12,940 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 137.0) internal successors, (411), 3 states have internal predecessors, (411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:53:12,940 INFO L276 IsEmpty]: Start isEmpty. Operand 13821 states and 14444 transitions. [2024-10-13 23:53:12,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 629 [2024-10-13 23:53:12,946 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 23:53:12,948 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 23:53:12,967 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-10-13 23:53:13,148 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-10-13 23:53:13,149 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 23:53:13,149 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 23:53:13,149 INFO L85 PathProgramCache]: Analyzing trace with hash -440294559, now seen corresponding path program 1 times [2024-10-13 23:53:13,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 23:53:13,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141584301] [2024-10-13 23:53:13,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:53:13,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 23:53:13,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:53:13,619 INFO L134 CoverageAnalysis]: Checked inductivity of 576 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 535 trivial. 0 not checked. [2024-10-13 23:53:13,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 23:53:13,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141584301] [2024-10-13 23:53:13,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [141584301] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 23:53:13,620 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 23:53:13,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 23:53:13,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695777912] [2024-10-13 23:53:13,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 23:53:13,621 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 23:53:13,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 23:53:13,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 23:53:13,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 23:53:13,622 INFO L87 Difference]: Start difference. First operand 13821 states and 14444 transitions. Second operand has 3 states, 3 states have (on average 84.33333333333333) internal successors, (253), 3 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) [2024-10-13 23:53:14,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 23:53:14,392 INFO L93 Difference]: Finished difference Result 27312 states and 28556 transitions. [2024-10-13 23:53:14,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 23:53:14,393 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 84.33333333333333) internal successors, (253), 3 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 628 [2024-10-13 23:53:14,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 23:53:14,413 INFO L225 Difference]: With dead ends: 27312 [2024-10-13 23:53:14,413 INFO L226 Difference]: Without dead ends: 13821 [2024-10-13 23:53:14,426 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 23:53:14,427 INFO L432 NwaCegarLoop]: 419 mSDtfsCounter, 331 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 745 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 331 SdHoareTripleChecker+Valid, 424 SdHoareTripleChecker+Invalid, 775 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 745 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-13 23:53:14,427 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [331 Valid, 424 Invalid, 775 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 745 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-13 23:53:14,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13821 states. [2024-10-13 23:53:14,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13821 to 12834. [2024-10-13 23:53:14,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12834 states, 12833 states have (on average 1.0424686355489754) internal successors, (13378), 12833 states have internal predecessors, (13378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:53:14,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12834 states to 12834 states and 13378 transitions. [2024-10-13 23:53:14,574 INFO L78 Accepts]: Start accepts. Automaton has 12834 states and 13378 transitions. Word has length 628 [2024-10-13 23:53:14,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 23:53:14,575 INFO L471 AbstractCegarLoop]: Abstraction has 12834 states and 13378 transitions. [2024-10-13 23:53:14,575 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 84.33333333333333) internal successors, (253), 3 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) [2024-10-13 23:53:14,576 INFO L276 IsEmpty]: Start isEmpty. Operand 12834 states and 13378 transitions. [2024-10-13 23:53:14,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 827 [2024-10-13 23:53:14,587 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 23:53:14,588 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 23:53:14,588 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-10-13 23:53:14,588 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 23:53:14,589 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 23:53:14,589 INFO L85 PathProgramCache]: Analyzing trace with hash 1011029240, now seen corresponding path program 1 times [2024-10-13 23:53:14,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 23:53:14,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428446186] [2024-10-13 23:53:14,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:53:14,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 23:53:14,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:53:15,686 INFO L134 CoverageAnalysis]: Checked inductivity of 978 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 923 trivial. 0 not checked. [2024-10-13 23:53:15,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 23:53:15,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428446186] [2024-10-13 23:53:15,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [428446186] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 23:53:15,687 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 23:53:15,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 23:53:15,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738792271] [2024-10-13 23:53:15,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 23:53:15,688 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 23:53:15,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 23:53:15,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 23:53:15,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 23:53:15,689 INFO L87 Difference]: Start difference. First operand 12834 states and 13378 transitions. Second operand has 3 states, 3 states have (on average 92.33333333333333) internal successors, (277), 3 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:53:16,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 23:53:16,414 INFO L93 Difference]: Finished difference Result 25338 states and 26424 transitions. [2024-10-13 23:53:16,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 23:53:16,415 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 92.33333333333333) internal successors, (277), 3 states have internal predecessors, (277), 0 states have call successors, (0), 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 826 [2024-10-13 23:53:16,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 23:53:16,483 INFO L225 Difference]: With dead ends: 25338 [2024-10-13 23:53:16,483 INFO L226 Difference]: Without dead ends: 12834 [2024-10-13 23:53:16,490 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 23:53:16,491 INFO L432 NwaCegarLoop]: 369 mSDtfsCounter, 351 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 787 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 351 SdHoareTripleChecker+Valid, 374 SdHoareTripleChecker+Invalid, 805 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 787 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-13 23:53:16,491 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [351 Valid, 374 Invalid, 805 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 787 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-13 23:53:16,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12834 states. [2024-10-13 23:53:16,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12834 to 12834. [2024-10-13 23:53:16,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12834 states, 12833 states have (on average 1.036312631496922) internal successors, (13299), 12833 states have internal predecessors, (13299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:53:16,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12834 states to 12834 states and 13299 transitions. [2024-10-13 23:53:16,678 INFO L78 Accepts]: Start accepts. Automaton has 12834 states and 13299 transitions. Word has length 826 [2024-10-13 23:53:16,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 23:53:16,680 INFO L471 AbstractCegarLoop]: Abstraction has 12834 states and 13299 transitions. [2024-10-13 23:53:16,680 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 92.33333333333333) internal successors, (277), 3 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:53:16,680 INFO L276 IsEmpty]: Start isEmpty. Operand 12834 states and 13299 transitions. [2024-10-13 23:53:16,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 844 [2024-10-13 23:53:16,699 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 23:53:16,699 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 23:53:16,700 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-10-13 23:53:16,700 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 23:53:16,700 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 23:53:16,701 INFO L85 PathProgramCache]: Analyzing trace with hash 200224903, now seen corresponding path program 1 times [2024-10-13 23:53:16,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 23:53:16,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771720510] [2024-10-13 23:53:16,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:53:16,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 23:53:16,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:53:17,370 INFO L134 CoverageAnalysis]: Checked inductivity of 987 backedges. 258 proven. 0 refuted. 0 times theorem prover too weak. 729 trivial. 0 not checked. [2024-10-13 23:53:17,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 23:53:17,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771720510] [2024-10-13 23:53:17,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1771720510] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 23:53:17,371 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 23:53:17,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 23:53:17,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171064213] [2024-10-13 23:53:17,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 23:53:17,373 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 23:53:17,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 23:53:17,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 23:53:17,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 23:53:17,374 INFO L87 Difference]: Start difference. First operand 12834 states and 13299 transitions. Second operand has 3 states, 3 states have (on average 119.33333333333333) internal successors, (358), 3 states have internal predecessors, (358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:53:18,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 23:53:18,149 INFO L93 Difference]: Finished difference Result 30273 states and 31425 transitions. [2024-10-13 23:53:18,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 23:53:18,150 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 119.33333333333333) internal successors, (358), 3 states have internal predecessors, (358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 843 [2024-10-13 23:53:18,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 23:53:18,171 INFO L225 Difference]: With dead ends: 30273 [2024-10-13 23:53:18,171 INFO L226 Difference]: Without dead ends: 16124 [2024-10-13 23:53:18,184 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 23:53:18,184 INFO L432 NwaCegarLoop]: 422 mSDtfsCounter, 269 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 748 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 269 SdHoareTripleChecker+Valid, 427 SdHoareTripleChecker+Invalid, 836 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 748 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-13 23:53:18,185 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [269 Valid, 427 Invalid, 836 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 748 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-13 23:53:18,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16124 states. [2024-10-13 23:53:18,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16124 to 15795. [2024-10-13 23:53:18,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15795 states, 15794 states have (on average 1.0291249841712042) internal successors, (16254), 15794 states have internal predecessors, (16254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:53:18,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15795 states to 15795 states and 16254 transitions. [2024-10-13 23:53:18,372 INFO L78 Accepts]: Start accepts. Automaton has 15795 states and 16254 transitions. Word has length 843 [2024-10-13 23:53:18,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 23:53:18,373 INFO L471 AbstractCegarLoop]: Abstraction has 15795 states and 16254 transitions. [2024-10-13 23:53:18,374 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 119.33333333333333) internal successors, (358), 3 states have internal predecessors, (358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:53:18,374 INFO L276 IsEmpty]: Start isEmpty. Operand 15795 states and 16254 transitions. [2024-10-13 23:53:18,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1100 [2024-10-13 23:53:18,394 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 23:53:18,395 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 23:53:18,395 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-10-13 23:53:18,395 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 23:53:18,396 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 23:53:18,396 INFO L85 PathProgramCache]: Analyzing trace with hash 966702288, now seen corresponding path program 1 times [2024-10-13 23:53:18,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 23:53:18,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748481685] [2024-10-13 23:53:18,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:53:18,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 23:53:18,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:53:19,032 INFO L134 CoverageAnalysis]: Checked inductivity of 2309 backedges. 1654 proven. 0 refuted. 0 times theorem prover too weak. 655 trivial. 0 not checked. [2024-10-13 23:53:19,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 23:53:19,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748481685] [2024-10-13 23:53:19,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1748481685] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 23:53:19,033 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 23:53:19,033 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 23:53:19,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635472498] [2024-10-13 23:53:19,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 23:53:19,034 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 23:53:19,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 23:53:19,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 23:53:19,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 23:53:19,036 INFO L87 Difference]: Start difference. First operand 15795 states and 16254 transitions. Second operand has 3 states, 3 states have (on average 203.0) internal successors, (609), 3 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:53:19,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 23:53:19,720 INFO L93 Difference]: Finished difference Result 31260 states and 32176 transitions. [2024-10-13 23:53:19,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 23:53:19,721 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 203.0) internal successors, (609), 3 states have internal predecessors, (609), 0 states have call successors, (0), 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 1099 [2024-10-13 23:53:19,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 23:53:19,736 INFO L225 Difference]: With dead ends: 31260 [2024-10-13 23:53:19,736 INFO L226 Difference]: Without dead ends: 15795 [2024-10-13 23:53:19,748 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 23:53:19,748 INFO L432 NwaCegarLoop]: 421 mSDtfsCounter, 220 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 752 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 220 SdHoareTripleChecker+Valid, 426 SdHoareTripleChecker+Invalid, 801 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 752 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-13 23:53:19,749 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [220 Valid, 426 Invalid, 801 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 752 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-13 23:53:19,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15795 states. [2024-10-13 23:53:19,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15795 to 14479. [2024-10-13 23:53:19,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14479 states, 14478 states have (on average 1.0232766956761983) internal successors, (14815), 14478 states have internal predecessors, (14815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:53:20,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14479 states to 14479 states and 14815 transitions. [2024-10-13 23:53:20,004 INFO L78 Accepts]: Start accepts. Automaton has 14479 states and 14815 transitions. Word has length 1099 [2024-10-13 23:53:20,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 23:53:20,005 INFO L471 AbstractCegarLoop]: Abstraction has 14479 states and 14815 transitions. [2024-10-13 23:53:20,005 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 203.0) internal successors, (609), 3 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:53:20,005 INFO L276 IsEmpty]: Start isEmpty. Operand 14479 states and 14815 transitions. [2024-10-13 23:53:20,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1101 [2024-10-13 23:53:20,025 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 23:53:20,026 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 23:53:20,026 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-10-13 23:53:20,026 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 23:53:20,027 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 23:53:20,027 INFO L85 PathProgramCache]: Analyzing trace with hash 1456731833, now seen corresponding path program 1 times [2024-10-13 23:53:20,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 23:53:20,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427793173] [2024-10-13 23:53:20,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:53:20,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 23:53:20,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:53:20,812 INFO L134 CoverageAnalysis]: Checked inductivity of 2315 backedges. 502 proven. 0 refuted. 0 times theorem prover too weak. 1813 trivial. 0 not checked. [2024-10-13 23:53:20,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 23:53:20,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1427793173] [2024-10-13 23:53:20,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1427793173] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 23:53:20,817 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 23:53:20,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 23:53:20,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648846654] [2024-10-13 23:53:20,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 23:53:20,818 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 23:53:20,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 23:53:20,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 23:53:20,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 23:53:20,820 INFO L87 Difference]: Start difference. First operand 14479 states and 14815 transitions. Second operand has 3 states, 3 states have (on average 111.66666666666667) internal successors, (335), 3 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:53:21,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 23:53:21,605 INFO L93 Difference]: Finished difference Result 31918 states and 32698 transitions. [2024-10-13 23:53:21,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 23:53:21,606 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 111.66666666666667) internal successors, (335), 3 states have internal predecessors, (335), 0 states have call successors, (0), 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 1100 [2024-10-13 23:53:21,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 23:53:21,626 INFO L225 Difference]: With dead ends: 31918 [2024-10-13 23:53:21,626 INFO L226 Difference]: Without dead ends: 15466 [2024-10-13 23:53:21,640 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 23:53:21,641 INFO L432 NwaCegarLoop]: 404 mSDtfsCounter, 273 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 757 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 273 SdHoareTripleChecker+Valid, 409 SdHoareTripleChecker+Invalid, 818 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 757 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-13 23:53:21,641 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [273 Valid, 409 Invalid, 818 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 757 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-13 23:53:21,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15466 states. [2024-10-13 23:53:21,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15466 to 12834. [2024-10-13 23:53:21,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12834 states, 12833 states have (on average 1.020182342398504) internal successors, (13092), 12833 states have internal predecessors, (13092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:53:21,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12834 states to 12834 states and 13092 transitions. [2024-10-13 23:53:21,842 INFO L78 Accepts]: Start accepts. Automaton has 12834 states and 13092 transitions. Word has length 1100 [2024-10-13 23:53:21,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 23:53:21,844 INFO L471 AbstractCegarLoop]: Abstraction has 12834 states and 13092 transitions. [2024-10-13 23:53:21,844 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 111.66666666666667) internal successors, (335), 3 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:53:21,844 INFO L276 IsEmpty]: Start isEmpty. Operand 12834 states and 13092 transitions. [2024-10-13 23:53:21,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1356 [2024-10-13 23:53:21,894 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 23:53:21,895 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 23:53:21,895 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-10-13 23:53:21,895 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 23:53:21,896 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 23:53:21,896 INFO L85 PathProgramCache]: Analyzing trace with hash -1880526722, now seen corresponding path program 1 times [2024-10-13 23:53:21,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 23:53:21,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876683559] [2024-10-13 23:53:21,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:53:21,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 23:53:22,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:53:23,224 INFO L134 CoverageAnalysis]: Checked inductivity of 3790 backedges. 2299 proven. 0 refuted. 0 times theorem prover too weak. 1491 trivial. 0 not checked. [2024-10-13 23:53:23,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 23:53:23,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1876683559] [2024-10-13 23:53:23,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1876683559] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 23:53:23,225 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 23:53:23,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 23:53:23,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964208922] [2024-10-13 23:53:23,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 23:53:23,226 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 23:53:23,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 23:53:23,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 23:53:23,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 23:53:23,228 INFO L87 Difference]: Start difference. First operand 12834 states and 13092 transitions. Second operand has 3 states, 3 states have (on average 190.0) internal successors, (570), 3 states have internal predecessors, (570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:53:23,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 23:53:23,888 INFO L93 Difference]: Finished difference Result 25996 states and 26518 transitions. [2024-10-13 23:53:23,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 23:53:23,889 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 190.0) internal successors, (570), 3 states have internal predecessors, (570), 0 states have call successors, (0), 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 1355 [2024-10-13 23:53:23,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 23:53:23,903 INFO L225 Difference]: With dead ends: 25996 [2024-10-13 23:53:23,904 INFO L226 Difference]: Without dead ends: 13492 [2024-10-13 23:53:23,913 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 23:53:23,914 INFO L432 NwaCegarLoop]: 422 mSDtfsCounter, 224 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 748 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 224 SdHoareTripleChecker+Valid, 427 SdHoareTripleChecker+Invalid, 753 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 748 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-13 23:53:23,914 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [224 Valid, 427 Invalid, 753 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 748 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-13 23:53:23,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13492 states. [2024-10-13 23:53:24,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13492 to 13492. [2024-10-13 23:53:24,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13492 states, 13491 states have (on average 1.0194944778000148) internal successors, (13754), 13491 states have internal predecessors, (13754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:53:24,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13492 states to 13492 states and 13754 transitions. [2024-10-13 23:53:24,039 INFO L78 Accepts]: Start accepts. Automaton has 13492 states and 13754 transitions. Word has length 1355 [2024-10-13 23:53:24,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 23:53:24,040 INFO L471 AbstractCegarLoop]: Abstraction has 13492 states and 13754 transitions. [2024-10-13 23:53:24,040 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 190.0) internal successors, (570), 3 states have internal predecessors, (570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:53:24,040 INFO L276 IsEmpty]: Start isEmpty. Operand 13492 states and 13754 transitions. [2024-10-13 23:53:24,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1394 [2024-10-13 23:53:24,064 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 23:53:24,065 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 23:53:24,065 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-10-13 23:53:24,066 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 23:53:24,066 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 23:53:24,066 INFO L85 PathProgramCache]: Analyzing trace with hash -769860126, now seen corresponding path program 1 times [2024-10-13 23:53:24,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 23:53:24,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1204756944] [2024-10-13 23:53:24,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:53:24,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 23:53:24,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:53:25,324 INFO L134 CoverageAnalysis]: Checked inductivity of 3551 backedges. 2549 proven. 0 refuted. 0 times theorem prover too weak. 1002 trivial. 0 not checked. [2024-10-13 23:53:25,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 23:53:25,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1204756944] [2024-10-13 23:53:25,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1204756944] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 23:53:25,325 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 23:53:25,325 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-13 23:53:25,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257192990] [2024-10-13 23:53:25,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 23:53:25,326 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-13 23:53:25,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 23:53:25,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-13 23:53:25,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-10-13 23:53:25,327 INFO L87 Difference]: Start difference. First operand 13492 states and 13754 transitions. Second operand has 6 states, 6 states have (on average 122.16666666666667) internal successors, (733), 6 states have internal predecessors, (733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:53:26,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 23:53:26,692 INFO L93 Difference]: Finished difference Result 26655 states and 27177 transitions. [2024-10-13 23:53:26,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-13 23:53:26,693 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 122.16666666666667) internal successors, (733), 6 states have internal predecessors, (733), 0 states have call successors, (0), 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 1393 [2024-10-13 23:53:26,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 23:53:26,706 INFO L225 Difference]: With dead ends: 26655 [2024-10-13 23:53:26,707 INFO L226 Difference]: Without dead ends: 13493 [2024-10-13 23:53:26,715 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-10-13 23:53:26,716 INFO L432 NwaCegarLoop]: 420 mSDtfsCounter, 209 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 2308 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 209 SdHoareTripleChecker+Valid, 555 SdHoareTripleChecker+Invalid, 2312 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 2308 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-10-13 23:53:26,716 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [209 Valid, 555 Invalid, 2312 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 2308 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-10-13 23:53:26,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13493 states. [2024-10-13 23:53:26,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13493 to 13492. [2024-10-13 23:53:26,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13492 states, 13491 states have (on average 1.0191979838410792) internal successors, (13750), 13491 states have internal predecessors, (13750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:53:26,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13492 states to 13492 states and 13750 transitions. [2024-10-13 23:53:26,869 INFO L78 Accepts]: Start accepts. Automaton has 13492 states and 13750 transitions. Word has length 1393 [2024-10-13 23:53:26,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 23:53:26,870 INFO L471 AbstractCegarLoop]: Abstraction has 13492 states and 13750 transitions. [2024-10-13 23:53:26,870 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 122.16666666666667) internal successors, (733), 6 states have internal predecessors, (733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:53:26,870 INFO L276 IsEmpty]: Start isEmpty. Operand 13492 states and 13750 transitions. [2024-10-13 23:53:26,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1408 [2024-10-13 23:53:26,898 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 23:53:26,899 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 23:53:26,899 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-10-13 23:53:26,899 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 23:53:26,900 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 23:53:26,900 INFO L85 PathProgramCache]: Analyzing trace with hash 571511019, now seen corresponding path program 1 times [2024-10-13 23:53:26,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 23:53:26,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323201026] [2024-10-13 23:53:26,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:53:26,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 23:53:27,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:53:28,531 INFO L134 CoverageAnalysis]: Checked inductivity of 3451 backedges. 2486 proven. 0 refuted. 0 times theorem prover too weak. 965 trivial. 0 not checked. [2024-10-13 23:53:28,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 23:53:28,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323201026] [2024-10-13 23:53:28,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [323201026] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 23:53:28,532 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 23:53:28,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-13 23:53:28,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670795461] [2024-10-13 23:53:28,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 23:53:28,533 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 23:53:28,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 23:53:28,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 23:53:28,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 23:53:28,535 INFO L87 Difference]: Start difference. First operand 13492 states and 13750 transitions. Second operand has 4 states, 4 states have (on average 183.0) internal successors, (732), 4 states have internal predecessors, (732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:53:29,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 23:53:29,441 INFO L93 Difference]: Finished difference Result 26664 states and 27178 transitions. [2024-10-13 23:53:29,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-13 23:53:29,442 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 183.0) internal successors, (732), 4 states have internal predecessors, (732), 0 states have call successors, (0), 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 1407 [2024-10-13 23:53:29,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 23:53:29,453 INFO L225 Difference]: With dead ends: 26664 [2024-10-13 23:53:29,454 INFO L226 Difference]: Without dead ends: 13502 [2024-10-13 23:53:29,461 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-13 23:53:29,461 INFO L432 NwaCegarLoop]: 420 mSDtfsCounter, 217 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 1316 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 217 SdHoareTripleChecker+Valid, 432 SdHoareTripleChecker+Invalid, 1339 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 1316 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-10-13 23:53:29,462 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [217 Valid, 432 Invalid, 1339 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 1316 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-10-13 23:53:29,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13502 states. [2024-10-13 23:53:29,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13502 to 13492. [2024-10-13 23:53:29,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13492 states, 13491 states have (on average 1.0189014898821436) internal successors, (13746), 13491 states have internal predecessors, (13746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:53:29,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13492 states to 13492 states and 13746 transitions. [2024-10-13 23:53:29,575 INFO L78 Accepts]: Start accepts. Automaton has 13492 states and 13746 transitions. Word has length 1407 [2024-10-13 23:53:29,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 23:53:29,576 INFO L471 AbstractCegarLoop]: Abstraction has 13492 states and 13746 transitions. [2024-10-13 23:53:29,576 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 183.0) internal successors, (732), 4 states have internal predecessors, (732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:53:29,577 INFO L276 IsEmpty]: Start isEmpty. Operand 13492 states and 13746 transitions. [2024-10-13 23:53:29,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1410 [2024-10-13 23:53:29,596 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 23:53:29,597 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 23:53:29,597 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-10-13 23:53:29,597 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 23:53:29,598 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 23:53:29,598 INFO L85 PathProgramCache]: Analyzing trace with hash 411932643, now seen corresponding path program 1 times [2024-10-13 23:53:29,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 23:53:29,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831124144] [2024-10-13 23:53:29,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:53:29,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 23:53:29,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:53:31,027 INFO L134 CoverageAnalysis]: Checked inductivity of 3785 backedges. 2349 proven. 66 refuted. 0 times theorem prover too weak. 1370 trivial. 0 not checked. [2024-10-13 23:53:31,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 23:53:31,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831124144] [2024-10-13 23:53:31,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1831124144] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 23:53:31,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [589710744] [2024-10-13 23:53:31,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:53:31,028 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 23:53:31,028 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 23:53:31,030 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) [2024-10-13 23:53:31,031 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-13 23:53:31,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:53:31,389 INFO L255 TraceCheckSpWp]: Trace formula consists of 1634 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-13 23:53:31,406 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 23:53:34,334 INFO L134 CoverageAnalysis]: Checked inductivity of 3785 backedges. 1829 proven. 201 refuted. 0 times theorem prover too weak. 1755 trivial. 0 not checked. [2024-10-13 23:53:34,334 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 23:53:38,957 INFO L134 CoverageAnalysis]: Checked inductivity of 3785 backedges. 1829 proven. 201 refuted. 0 times theorem prover too weak. 1755 trivial. 0 not checked. [2024-10-13 23:53:38,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [589710744] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 23:53:38,958 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 23:53:38,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 8 [2024-10-13 23:53:38,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976810806] [2024-10-13 23:53:38,959 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 23:53:38,963 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-13 23:53:38,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 23:53:38,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-13 23:53:38,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-10-13 23:53:38,966 INFO L87 Difference]: Start difference. First operand 13492 states and 13746 transitions. Second operand has 9 states, 9 states have (on average 189.22222222222223) internal successors, (1703), 8 states have internal predecessors, (1703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:53:43,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 23:53:43,230 INFO L93 Difference]: Finished difference Result 36524 states and 37186 transitions. [2024-10-13 23:53:43,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-13 23:53:43,231 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 189.22222222222223) internal successors, (1703), 8 states have internal predecessors, (1703), 0 states have call successors, (0), 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 1409 [2024-10-13 23:53:43,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 23:53:43,252 INFO L225 Difference]: With dead ends: 36524 [2024-10-13 23:53:43,252 INFO L226 Difference]: Without dead ends: 23362 [2024-10-13 23:53:43,262 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2828 GetRequests, 2813 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=93, Invalid=179, Unknown=0, NotChecked=0, Total=272 [2024-10-13 23:53:43,263 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 1668 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 6210 mSolverCounterSat, 214 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1668 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 6424 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 214 IncrementalHoareTripleChecker+Valid, 6210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2024-10-13 23:53:43,263 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1668 Valid, 78 Invalid, 6424 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [214 Valid, 6210 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2024-10-13 23:53:43,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23362 states. [2024-10-13 23:53:43,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23362 to 15466. [2024-10-13 23:53:43,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15466 states, 15465 states have (on average 1.0172647914645976) internal successors, (15732), 15465 states have internal predecessors, (15732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:53:43,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15466 states to 15466 states and 15732 transitions. [2024-10-13 23:53:43,453 INFO L78 Accepts]: Start accepts. Automaton has 15466 states and 15732 transitions. Word has length 1409 [2024-10-13 23:53:43,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 23:53:43,454 INFO L471 AbstractCegarLoop]: Abstraction has 15466 states and 15732 transitions. [2024-10-13 23:53:43,454 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 189.22222222222223) internal successors, (1703), 8 states have internal predecessors, (1703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:53:43,454 INFO L276 IsEmpty]: Start isEmpty. Operand 15466 states and 15732 transitions. [2024-10-13 23:53:43,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1440 [2024-10-13 23:53:43,470 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 23:53:43,470 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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] [2024-10-13 23:53:43,485 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-13 23:53:43,671 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-10-13 23:53:43,672 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 23:53:43,672 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 23:53:43,672 INFO L85 PathProgramCache]: Analyzing trace with hash 267538114, now seen corresponding path program 1 times [2024-10-13 23:53:43,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 23:53:43,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207752302] [2024-10-13 23:53:43,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:53:43,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 23:53:43,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:53:44,850 INFO L134 CoverageAnalysis]: Checked inductivity of 4465 backedges. 2079 proven. 0 refuted. 0 times theorem prover too weak. 2386 trivial. 0 not checked. [2024-10-13 23:53:44,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 23:53:44,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207752302] [2024-10-13 23:53:44,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1207752302] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 23:53:44,851 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 23:53:44,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 23:53:44,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747885680] [2024-10-13 23:53:44,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 23:53:44,853 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 23:53:44,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 23:53:44,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 23:53:44,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-13 23:53:44,854 INFO L87 Difference]: Start difference. First operand 15466 states and 15732 transitions. Second operand has 4 states, 4 states have (on average 161.75) internal successors, (647), 3 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:53:45,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 23:53:45,695 INFO L93 Difference]: Finished difference Result 30931 states and 31466 transitions. [2024-10-13 23:53:45,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 23:53:45,696 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 161.75) internal successors, (647), 3 states have internal predecessors, (647), 0 states have call successors, (0), 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 1439 [2024-10-13 23:53:45,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 23:53:45,714 INFO L225 Difference]: With dead ends: 30931 [2024-10-13 23:53:45,715 INFO L226 Difference]: Without dead ends: 15795 [2024-10-13 23:53:45,726 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-13 23:53:45,727 INFO L432 NwaCegarLoop]: 90 mSDtfsCounter, 172 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 1158 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 172 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 1161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-10-13 23:53:45,727 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [172 Valid, 100 Invalid, 1161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1158 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-10-13 23:53:45,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15795 states. [2024-10-13 23:53:45,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15795 to 15795. [2024-10-13 23:53:45,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15795 states, 15794 states have (on average 1.0170317842218564) internal successors, (16063), 15794 states have internal predecessors, (16063), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:53:45,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15795 states to 15795 states and 16063 transitions. [2024-10-13 23:53:45,865 INFO L78 Accepts]: Start accepts. Automaton has 15795 states and 16063 transitions. Word has length 1439 [2024-10-13 23:53:45,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 23:53:45,865 INFO L471 AbstractCegarLoop]: Abstraction has 15795 states and 16063 transitions. [2024-10-13 23:53:45,866 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 161.75) internal successors, (647), 3 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:53:45,866 INFO L276 IsEmpty]: Start isEmpty. Operand 15795 states and 16063 transitions. [2024-10-13 23:53:45,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1503 [2024-10-13 23:53:45,886 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 23:53:45,886 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-10-13 23:53:45,886 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-10-13 23:53:45,887 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 23:53:45,887 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 23:53:45,888 INFO L85 PathProgramCache]: Analyzing trace with hash 2103010477, now seen corresponding path program 1 times [2024-10-13 23:53:45,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 23:53:45,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592119651] [2024-10-13 23:53:45,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:53:45,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 23:53:46,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:53:47,247 INFO L134 CoverageAnalysis]: Checked inductivity of 4652 backedges. 2718 proven. 0 refuted. 0 times theorem prover too weak. 1934 trivial. 0 not checked. [2024-10-13 23:53:47,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 23:53:47,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592119651] [2024-10-13 23:53:47,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [592119651] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 23:53:47,248 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 23:53:47,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 23:53:47,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978999457] [2024-10-13 23:53:47,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 23:53:47,249 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 23:53:47,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 23:53:47,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 23:53:47,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 23:53:47,250 INFO L87 Difference]: Start difference. First operand 15795 states and 16063 transitions. Second operand has 3 states, 3 states have (on average 205.0) internal successors, (615), 3 states have internal predecessors, (615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:53:47,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 23:53:47,974 INFO L93 Difference]: Finished difference Result 34221 states and 34801 transitions. [2024-10-13 23:53:47,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 23:53:47,974 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 205.0) internal successors, (615), 3 states have internal predecessors, (615), 0 states have call successors, (0), 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 1502 [2024-10-13 23:53:47,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 23:53:47,991 INFO L225 Difference]: With dead ends: 34221 [2024-10-13 23:53:47,991 INFO L226 Difference]: Without dead ends: 19085 [2024-10-13 23:53:48,002 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 23:53:48,003 INFO L432 NwaCegarLoop]: 39 mSDtfsCounter, 206 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 762 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 206 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 839 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 762 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-13 23:53:48,003 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [206 Valid, 44 Invalid, 839 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 762 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-13 23:53:48,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19085 states. [2024-10-13 23:53:48,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19085 to 16782. [2024-10-13 23:53:48,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16782 states, 16781 states have (on average 1.0168643108277218) internal successors, (17064), 16781 states have internal predecessors, (17064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:53:48,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16782 states to 16782 states and 17064 transitions. [2024-10-13 23:53:48,133 INFO L78 Accepts]: Start accepts. Automaton has 16782 states and 17064 transitions. Word has length 1502 [2024-10-13 23:53:48,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 23:53:48,134 INFO L471 AbstractCegarLoop]: Abstraction has 16782 states and 17064 transitions. [2024-10-13 23:53:48,134 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 205.0) internal successors, (615), 3 states have internal predecessors, (615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:53:48,134 INFO L276 IsEmpty]: Start isEmpty. Operand 16782 states and 17064 transitions. [2024-10-13 23:53:48,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1544 [2024-10-13 23:53:48,154 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 23:53:48,155 INFO L215 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-10-13 23:53:48,155 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-10-13 23:53:48,155 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 23:53:48,156 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 23:53:48,156 INFO L85 PathProgramCache]: Analyzing trace with hash -2099685054, now seen corresponding path program 1 times [2024-10-13 23:53:48,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 23:53:48,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647301524] [2024-10-13 23:53:48,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:53:48,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 23:53:48,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:53:49,897 INFO L134 CoverageAnalysis]: Checked inductivity of 5320 backedges. 3709 proven. 41 refuted. 0 times theorem prover too weak. 1570 trivial. 0 not checked. [2024-10-13 23:53:49,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 23:53:49,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647301524] [2024-10-13 23:53:49,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1647301524] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 23:53:49,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2144968384] [2024-10-13 23:53:49,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:53:49,898 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 23:53:49,898 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 23:53:49,912 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) [2024-10-13 23:53:49,913 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-13 23:53:50,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:53:50,320 INFO L255 TraceCheckSpWp]: Trace formula consists of 1812 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-13 23:53:50,334 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 23:53:50,871 INFO L134 CoverageAnalysis]: Checked inductivity of 5320 backedges. 2367 proven. 0 refuted. 0 times theorem prover too weak. 2953 trivial. 0 not checked. [2024-10-13 23:53:50,871 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 23:53:50,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2144968384] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 23:53:50,872 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-13 23:53:50,873 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-10-13 23:53:50,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877494617] [2024-10-13 23:53:50,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 23:53:50,874 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 23:53:50,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 23:53:50,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 23:53:50,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-13 23:53:50,875 INFO L87 Difference]: Start difference. First operand 16782 states and 17064 transitions. Second operand has 3 states, 3 states have (on average 211.0) internal successors, (633), 3 states have internal predecessors, (633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:53:51,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 23:53:51,548 INFO L93 Difference]: Finished difference Result 32905 states and 33465 transitions. [2024-10-13 23:53:51,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 23:53:51,549 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 211.0) internal successors, (633), 3 states have internal predecessors, (633), 0 states have call successors, (0), 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 1543 [2024-10-13 23:53:51,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 23:53:51,566 INFO L225 Difference]: With dead ends: 32905 [2024-10-13 23:53:51,567 INFO L226 Difference]: Without dead ends: 16782 [2024-10-13 23:53:51,578 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1547 GetRequests, 1543 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-13 23:53:51,579 INFO L432 NwaCegarLoop]: 416 mSDtfsCounter, 120 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 743 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 421 SdHoareTripleChecker+Invalid, 754 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 743 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-13 23:53:51,579 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 421 Invalid, 754 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 743 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-13 23:53:51,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16782 states. [2024-10-13 23:53:51,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16782 to 16782. [2024-10-13 23:53:51,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16782 states, 16781 states have (on average 1.0166259460103688) internal successors, (17060), 16781 states have internal predecessors, (17060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:53:51,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16782 states to 16782 states and 17060 transitions. [2024-10-13 23:53:51,711 INFO L78 Accepts]: Start accepts. Automaton has 16782 states and 17060 transitions. Word has length 1543 [2024-10-13 23:53:51,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 23:53:51,712 INFO L471 AbstractCegarLoop]: Abstraction has 16782 states and 17060 transitions. [2024-10-13 23:53:51,712 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 211.0) internal successors, (633), 3 states have internal predecessors, (633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:53:51,712 INFO L276 IsEmpty]: Start isEmpty. Operand 16782 states and 17060 transitions. [2024-10-13 23:53:51,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1774 [2024-10-13 23:53:51,731 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 23:53:51,732 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 23:53:51,746 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-13 23:53:51,932 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 23:53:51,933 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 23:53:51,933 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 23:53:51,933 INFO L85 PathProgramCache]: Analyzing trace with hash 2134848100, now seen corresponding path program 1 times [2024-10-13 23:53:51,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 23:53:51,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586772946] [2024-10-13 23:53:51,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:53:51,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 23:53:52,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:53:54,557 INFO L134 CoverageAnalysis]: Checked inductivity of 6520 backedges. 4391 proven. 665 refuted. 0 times theorem prover too weak. 1464 trivial. 0 not checked. [2024-10-13 23:53:54,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 23:53:54,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586772946] [2024-10-13 23:53:54,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1586772946] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 23:53:54,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2087142985] [2024-10-13 23:53:54,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:53:54,558 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 23:53:54,558 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 23:53:54,560 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) [2024-10-13 23:53:54,561 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-13 23:53:54,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:53:54,994 INFO L255 TraceCheckSpWp]: Trace formula consists of 2060 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-13 23:53:55,016 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 23:53:55,277 INFO L134 CoverageAnalysis]: Checked inductivity of 6520 backedges. 2680 proven. 0 refuted. 0 times theorem prover too weak. 3840 trivial. 0 not checked. [2024-10-13 23:53:55,277 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 23:53:55,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2087142985] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 23:53:55,278 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-13 23:53:55,278 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [10] total 11 [2024-10-13 23:53:55,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021993934] [2024-10-13 23:53:55,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 23:53:55,279 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 23:53:55,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 23:53:55,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 23:53:55,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-10-13 23:53:55,281 INFO L87 Difference]: Start difference. First operand 16782 states and 17060 transitions. Second operand has 3 states, 3 states have (on average 219.0) internal successors, (657), 3 states have internal predecessors, (657), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:53:55,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 23:53:55,926 INFO L93 Difference]: Finished difference Result 32905 states and 33457 transitions. [2024-10-13 23:53:55,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 23:53:55,927 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 219.0) internal successors, (657), 3 states have internal predecessors, (657), 0 states have call successors, (0), 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 1773 [2024-10-13 23:53:55,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 23:53:55,941 INFO L225 Difference]: With dead ends: 32905 [2024-10-13 23:53:55,942 INFO L226 Difference]: Without dead ends: 16782 [2024-10-13 23:53:55,951 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1782 GetRequests, 1773 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-10-13 23:53:55,951 INFO L432 NwaCegarLoop]: 408 mSDtfsCounter, 119 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 748 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 413 SdHoareTripleChecker+Invalid, 763 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 748 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-13 23:53:55,952 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [119 Valid, 413 Invalid, 763 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 748 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-13 23:53:55,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16782 states. [2024-10-13 23:53:56,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16782 to 16124. [2024-10-13 23:53:56,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16124 states, 16123 states have (on average 1.0160640079389691) internal successors, (16382), 16123 states have internal predecessors, (16382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:53:56,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16124 states to 16124 states and 16382 transitions. [2024-10-13 23:53:56,078 INFO L78 Accepts]: Start accepts. Automaton has 16124 states and 16382 transitions. Word has length 1773 [2024-10-13 23:53:56,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 23:53:56,079 INFO L471 AbstractCegarLoop]: Abstraction has 16124 states and 16382 transitions. [2024-10-13 23:53:56,079 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 219.0) internal successors, (657), 3 states have internal predecessors, (657), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:53:56,080 INFO L276 IsEmpty]: Start isEmpty. Operand 16124 states and 16382 transitions. [2024-10-13 23:53:56,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2185 [2024-10-13 23:53:56,104 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 23:53:56,105 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 23:53:56,121 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-10-13 23:53:56,305 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 23:53:56,306 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 23:53:56,306 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 23:53:56,307 INFO L85 PathProgramCache]: Analyzing trace with hash 1508710329, now seen corresponding path program 1 times [2024-10-13 23:53:56,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 23:53:56,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98987247] [2024-10-13 23:53:56,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:53:56,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 23:53:56,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat