./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-69.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 803cd42f 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 ../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-69.i -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 760227a4cb6980d419ef76fd433852314d74b19baea3453b7098c39a60965d1a --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-803cd42-m [2024-11-22 11:43:40,112 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-22 11:43:40,171 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-22 11:43:40,175 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-22 11:43:40,175 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-22 11:43:40,200 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-22 11:43:40,200 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-22 11:43:40,200 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-22 11:43:40,201 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-22 11:43:40,204 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-22 11:43:40,204 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-22 11:43:40,204 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-22 11:43:40,205 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-22 11:43:40,205 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-22 11:43:40,205 INFO L153 SettingsManager]: * Use SBE=true [2024-11-22 11:43:40,206 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-22 11:43:40,207 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-22 11:43:40,207 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-22 11:43:40,207 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-22 11:43:40,207 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-22 11:43:40,207 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-22 11:43:40,208 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-22 11:43:40,209 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-22 11:43:40,209 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-22 11:43:40,209 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-22 11:43:40,209 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-22 11:43:40,209 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-22 11:43:40,210 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-22 11:43:40,210 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-22 11:43:40,210 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-22 11:43:40,210 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-22 11:43:40,210 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-22 11:43:40,211 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 11:43:40,211 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-22 11:43:40,211 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-22 11:43:40,211 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-22 11:43:40,211 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-22 11:43:40,211 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-22 11:43:40,212 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-22 11:43:40,212 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-22 11:43:40,212 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-22 11:43:40,213 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-22 11:43:40,213 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 760227a4cb6980d419ef76fd433852314d74b19baea3453b7098c39a60965d1a [2024-11-22 11:43:40,414 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-22 11:43:40,436 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-22 11:43:40,439 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-22 11:43:40,440 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-22 11:43:40,440 INFO L274 PluginConnector]: CDTParser initialized [2024-11-22 11:43:40,441 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-69.i [2024-11-22 11:43:42,059 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-22 11:43:42,281 INFO L384 CDTParser]: Found 1 translation units. [2024-11-22 11:43:42,282 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-69.i [2024-11-22 11:43:42,292 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/61ddabe65/513b0bd07607459bbe17328ef4e49fca/FLAG63d5a3840 [2024-11-22 11:43:42,304 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/61ddabe65/513b0bd07607459bbe17328ef4e49fca [2024-11-22 11:43:42,306 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-22 11:43:42,307 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-22 11:43:42,308 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-22 11:43:42,308 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-22 11:43:42,315 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-22 11:43:42,316 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 11:43:42" (1/1) ... [2024-11-22 11:43:42,317 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@28c74299 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:43:42, skipping insertion in model container [2024-11-22 11:43:42,317 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 11:43:42" (1/1) ... [2024-11-22 11:43:42,346 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-22 11:43:42,487 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-69.i[916,929] [2024-11-22 11:43:42,630 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 11:43:42,646 INFO L200 MainTranslator]: Completed pre-run [2024-11-22 11:43:42,661 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-69.i[916,929] [2024-11-22 11:43:42,835 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 11:43:42,861 INFO L204 MainTranslator]: Completed translation [2024-11-22 11:43:42,864 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:43:42 WrapperNode [2024-11-22 11:43:42,864 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-22 11:43:42,865 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-22 11:43:42,865 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-22 11:43:42,865 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-22 11:43:42,873 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:43:42" (1/1) ... [2024-11-22 11:43:42,895 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:43:42" (1/1) ... [2024-11-22 11:43:42,955 INFO L138 Inliner]: procedures = 26, calls = 78, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 482 [2024-11-22 11:43:42,956 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-22 11:43:42,957 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-22 11:43:42,957 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-22 11:43:42,957 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-22 11:43:42,968 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:43:42" (1/1) ... [2024-11-22 11:43:42,968 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:43:42" (1/1) ... [2024-11-22 11:43:42,979 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:43:42" (1/1) ... [2024-11-22 11:43:43,029 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-22 11:43:43,029 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:43:42" (1/1) ... [2024-11-22 11:43:43,030 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:43:42" (1/1) ... [2024-11-22 11:43:43,060 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:43:42" (1/1) ... [2024-11-22 11:43:43,064 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:43:42" (1/1) ... [2024-11-22 11:43:43,072 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:43:42" (1/1) ... [2024-11-22 11:43:43,079 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:43:42" (1/1) ... [2024-11-22 11:43:43,085 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-22 11:43:43,086 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-22 11:43:43,086 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-22 11:43:43,086 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-22 11:43:43,087 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:43:42" (1/1) ... [2024-11-22 11:43:43,091 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 11:43:43,099 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 11:43:43,115 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-22 11:43:43,117 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-22 11:43:43,149 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-22 11:43:43,150 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-22 11:43:43,150 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-22 11:43:43,150 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-22 11:43:43,150 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-22 11:43:43,150 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-22 11:43:43,229 INFO L238 CfgBuilder]: Building ICFG [2024-11-22 11:43:43,230 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-22 11:43:43,953 INFO L? ?]: Removed 44 outVars from TransFormulas that were not future-live. [2024-11-22 11:43:43,953 INFO L287 CfgBuilder]: Performing block encoding [2024-11-22 11:43:43,970 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-22 11:43:43,971 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-22 11:43:43,971 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 11:43:43 BoogieIcfgContainer [2024-11-22 11:43:43,972 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-22 11:43:43,974 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-22 11:43:43,974 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-22 11:43:43,976 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-22 11:43:43,977 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 11:43:42" (1/3) ... [2024-11-22 11:43:43,977 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56022b5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 11:43:43, skipping insertion in model container [2024-11-22 11:43:43,978 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:43:42" (2/3) ... [2024-11-22 11:43:43,978 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56022b5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 11:43:43, skipping insertion in model container [2024-11-22 11:43:43,978 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 11:43:43" (3/3) ... [2024-11-22 11:43:43,979 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount250_file-69.i [2024-11-22 11:43:43,991 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-22 11:43:43,992 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-22 11:43:44,054 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-22 11:43:44,061 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;@4781ee14, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-22 11:43:44,061 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-22 11:43:44,067 INFO L276 IsEmpty]: Start isEmpty. Operand has 202 states, 134 states have (on average 1.462686567164179) internal successors, (196), 135 states have internal predecessors, (196), 65 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 65 states have call predecessors, (65), 65 states have call successors, (65) [2024-11-22 11:43:44,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 413 [2024-11-22 11:43:44,089 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 11:43:44,090 INFO L215 NwaCegarLoop]: trace histogram [65, 65, 65, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 11:43:44,091 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 11:43:44,095 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 11:43:44,096 INFO L85 PathProgramCache]: Analyzing trace with hash 1247230441, now seen corresponding path program 1 times [2024-11-22 11:43:44,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 11:43:44,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505506104] [2024-11-22 11:43:44,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:43:44,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 11:43:44,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:43:44,629 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 0 proven. 128 refuted. 0 times theorem prover too weak. 8192 trivial. 0 not checked. [2024-11-22 11:43:44,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 11:43:44,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505506104] [2024-11-22 11:43:44,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1505506104] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 11:43:44,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1562085234] [2024-11-22 11:43:44,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:43:44,633 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 11:43:44,633 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 11:43:44,635 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 11:43:44,638 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-22 11:43:44,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:43:44,969 INFO L255 TraceCheckSpWp]: Trace formula consists of 947 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-22 11:43:44,989 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 11:43:45,056 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 128 proven. 0 refuted. 0 times theorem prover too weak. 8192 trivial. 0 not checked. [2024-11-22 11:43:45,057 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 11:43:45,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1562085234] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 11:43:45,057 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 11:43:45,058 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-22 11:43:45,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225908049] [2024-11-22 11:43:45,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 11:43:45,065 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-22 11:43:45,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 11:43:45,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-22 11:43:45,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-22 11:43:45,093 INFO L87 Difference]: Start difference. First operand has 202 states, 134 states have (on average 1.462686567164179) internal successors, (196), 135 states have internal predecessors, (196), 65 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 65 states have call predecessors, (65), 65 states have call successors, (65) Second operand has 2 states, 2 states have (on average 46.0) internal successors, (92), 2 states have internal predecessors, (92), 2 states have call successors, (65), 2 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 2 states have call successors, (65) [2024-11-22 11:43:45,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 11:43:45,152 INFO L93 Difference]: Finished difference Result 397 states and 711 transitions. [2024-11-22 11:43:45,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-22 11:43:45,155 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 46.0) internal successors, (92), 2 states have internal predecessors, (92), 2 states have call successors, (65), 2 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 2 states have call successors, (65) Word has length 412 [2024-11-22 11:43:45,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 11:43:45,163 INFO L225 Difference]: With dead ends: 397 [2024-11-22 11:43:45,163 INFO L226 Difference]: Without dead ends: 198 [2024-11-22 11:43:45,168 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 413 GetRequests, 413 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-22 11:43:45,171 INFO L432 NwaCegarLoop]: 319 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 319 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 11:43:45,172 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 319 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 11:43:45,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2024-11-22 11:43:45,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 198. [2024-11-22 11:43:45,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 131 states have (on average 1.4427480916030535) internal successors, (189), 131 states have internal predecessors, (189), 65 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 65 states have call predecessors, (65), 65 states have call successors, (65) [2024-11-22 11:43:45,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 319 transitions. [2024-11-22 11:43:45,250 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 319 transitions. Word has length 412 [2024-11-22 11:43:45,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 11:43:45,252 INFO L471 AbstractCegarLoop]: Abstraction has 198 states and 319 transitions. [2024-11-22 11:43:45,254 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 46.0) internal successors, (92), 2 states have internal predecessors, (92), 2 states have call successors, (65), 2 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 2 states have call successors, (65) [2024-11-22 11:43:45,254 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 319 transitions. [2024-11-22 11:43:45,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 413 [2024-11-22 11:43:45,268 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 11:43:45,268 INFO L215 NwaCegarLoop]: trace histogram [65, 65, 65, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 11:43:45,280 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-22 11:43:45,469 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,SelfDestructingSolverStorable0 [2024-11-22 11:43:45,470 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 11:43:45,471 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 11:43:45,471 INFO L85 PathProgramCache]: Analyzing trace with hash -26741593, now seen corresponding path program 1 times [2024-11-22 11:43:45,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 11:43:45,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413142393] [2024-11-22 11:43:45,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:43:45,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 11:43:45,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:43:45,845 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8320 trivial. 0 not checked. [2024-11-22 11:43:45,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 11:43:45,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413142393] [2024-11-22 11:43:45,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [413142393] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 11:43:45,849 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 11:43:45,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 11:43:45,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447308783] [2024-11-22 11:43:45,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 11:43:45,850 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 11:43:45,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 11:43:45,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 11:43:45,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 11:43:45,854 INFO L87 Difference]: Start difference. First operand 198 states and 319 transitions. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 1 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 1 states have call successors, (65) [2024-11-22 11:43:45,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 11:43:45,950 INFO L93 Difference]: Finished difference Result 580 states and 938 transitions. [2024-11-22 11:43:45,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 11:43:45,951 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 1 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 1 states have call successors, (65) Word has length 412 [2024-11-22 11:43:45,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 11:43:45,959 INFO L225 Difference]: With dead ends: 580 [2024-11-22 11:43:45,960 INFO L226 Difference]: Without dead ends: 385 [2024-11-22 11:43:45,961 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 11:43:45,962 INFO L432 NwaCegarLoop]: 506 mSDtfsCounter, 294 mSDsluCounter, 308 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 294 SdHoareTripleChecker+Valid, 814 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 11:43:45,964 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [294 Valid, 814 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 11:43:45,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 385 states. [2024-11-22 11:43:45,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 385 to 214. [2024-11-22 11:43:46,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 147 states have (on average 1.4761904761904763) internal successors, (217), 147 states have internal predecessors, (217), 65 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 65 states have call predecessors, (65), 65 states have call successors, (65) [2024-11-22 11:43:46,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 347 transitions. [2024-11-22 11:43:46,004 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 347 transitions. Word has length 412 [2024-11-22 11:43:46,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 11:43:46,008 INFO L471 AbstractCegarLoop]: Abstraction has 214 states and 347 transitions. [2024-11-22 11:43:46,008 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 1 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 1 states have call successors, (65) [2024-11-22 11:43:46,008 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 347 transitions. [2024-11-22 11:43:46,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 413 [2024-11-22 11:43:46,015 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 11:43:46,016 INFO L215 NwaCegarLoop]: trace histogram [65, 65, 65, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 11:43:46,016 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-22 11:43:46,016 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 11:43:46,017 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 11:43:46,018 INFO L85 PathProgramCache]: Analyzing trace with hash 395960233, now seen corresponding path program 1 times [2024-11-22 11:43:46,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 11:43:46,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405180887] [2024-11-22 11:43:46,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:43:46,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 11:43:46,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:43:46,257 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8320 trivial. 0 not checked. [2024-11-22 11:43:46,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 11:43:46,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405180887] [2024-11-22 11:43:46,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1405180887] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 11:43:46,259 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 11:43:46,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 11:43:46,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864996197] [2024-11-22 11:43:46,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 11:43:46,261 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 11:43:46,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 11:43:46,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 11:43:46,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 11:43:46,262 INFO L87 Difference]: Start difference. First operand 214 states and 347 transitions. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 1 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 1 states have call successors, (65) [2024-11-22 11:43:46,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 11:43:46,332 INFO L93 Difference]: Finished difference Result 632 states and 1027 transitions. [2024-11-22 11:43:46,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 11:43:46,334 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 1 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 1 states have call successors, (65) Word has length 412 [2024-11-22 11:43:46,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 11:43:46,340 INFO L225 Difference]: With dead ends: 632 [2024-11-22 11:43:46,341 INFO L226 Difference]: Without dead ends: 421 [2024-11-22 11:43:46,342 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 11:43:46,343 INFO L432 NwaCegarLoop]: 614 mSDtfsCounter, 303 mSDsluCounter, 304 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 303 SdHoareTripleChecker+Valid, 918 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 11:43:46,344 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [303 Valid, 918 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 11:43:46,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 421 states. [2024-11-22 11:43:46,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 421 to 242. [2024-11-22 11:43:46,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 242 states, 175 states have (on average 1.5142857142857142) internal successors, (265), 175 states have internal predecessors, (265), 65 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 65 states have call predecessors, (65), 65 states have call successors, (65) [2024-11-22 11:43:46,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 395 transitions. [2024-11-22 11:43:46,373 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 395 transitions. Word has length 412 [2024-11-22 11:43:46,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 11:43:46,373 INFO L471 AbstractCegarLoop]: Abstraction has 242 states and 395 transitions. [2024-11-22 11:43:46,374 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 1 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 1 states have call successors, (65) [2024-11-22 11:43:46,374 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 395 transitions. [2024-11-22 11:43:46,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 413 [2024-11-22 11:43:46,380 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 11:43:46,380 INFO L215 NwaCegarLoop]: trace histogram [65, 65, 65, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 11:43:46,380 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-22 11:43:46,381 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 11:43:46,381 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 11:43:46,381 INFO L85 PathProgramCache]: Analyzing trace with hash -1598184473, now seen corresponding path program 1 times [2024-11-22 11:43:46,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 11:43:46,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1344858104] [2024-11-22 11:43:46,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:43:46,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 11:43:46,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:43:46,749 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8320 trivial. 0 not checked. [2024-11-22 11:43:46,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 11:43:46,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1344858104] [2024-11-22 11:43:46,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1344858104] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 11:43:46,750 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 11:43:46,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 11:43:46,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29414392] [2024-11-22 11:43:46,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 11:43:46,752 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 11:43:46,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 11:43:46,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 11:43:46,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 11:43:46,753 INFO L87 Difference]: Start difference. First operand 242 states and 395 transitions. Second operand has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 2 states have call predecessors, (65), 2 states have call successors, (65) [2024-11-22 11:43:46,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 11:43:46,830 INFO L93 Difference]: Finished difference Result 481 states and 787 transitions. [2024-11-22 11:43:46,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 11:43:46,831 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 2 states have call predecessors, (65), 2 states have call successors, (65) Word has length 412 [2024-11-22 11:43:46,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 11:43:46,833 INFO L225 Difference]: With dead ends: 481 [2024-11-22 11:43:46,834 INFO L226 Difference]: Without dead ends: 242 [2024-11-22 11:43:46,835 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-22 11:43:46,835 INFO L432 NwaCegarLoop]: 300 mSDtfsCounter, 233 mSDsluCounter, 296 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 233 SdHoareTripleChecker+Valid, 596 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 11:43:46,836 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [233 Valid, 596 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 11:43:46,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2024-11-22 11:43:46,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 242. [2024-11-22 11:43:46,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 242 states, 175 states have (on average 1.502857142857143) internal successors, (263), 175 states have internal predecessors, (263), 65 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 65 states have call predecessors, (65), 65 states have call successors, (65) [2024-11-22 11:43:46,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 393 transitions. [2024-11-22 11:43:46,851 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 393 transitions. Word has length 412 [2024-11-22 11:43:46,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 11:43:46,852 INFO L471 AbstractCegarLoop]: Abstraction has 242 states and 393 transitions. [2024-11-22 11:43:46,853 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 2 states have call predecessors, (65), 2 states have call successors, (65) [2024-11-22 11:43:46,853 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 393 transitions. [2024-11-22 11:43:46,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 413 [2024-11-22 11:43:46,859 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 11:43:46,859 INFO L215 NwaCegarLoop]: trace histogram [65, 65, 65, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 11:43:46,859 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-22 11:43:46,860 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 11:43:46,860 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 11:43:46,860 INFO L85 PathProgramCache]: Analyzing trace with hash 325043561, now seen corresponding path program 1 times [2024-11-22 11:43:46,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 11:43:46,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108989319] [2024-11-22 11:43:46,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:43:46,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 11:43:46,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:43:47,384 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8320 trivial. 0 not checked. [2024-11-22 11:43:47,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 11:43:47,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108989319] [2024-11-22 11:43:47,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [108989319] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 11:43:47,385 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 11:43:47,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 11:43:47,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587026628] [2024-11-22 11:43:47,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 11:43:47,387 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 11:43:47,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 11:43:47,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 11:43:47,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 11:43:47,388 INFO L87 Difference]: Start difference. First operand 242 states and 393 transitions. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 1 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 1 states have call successors, (65) [2024-11-22 11:43:47,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 11:43:47,435 INFO L93 Difference]: Finished difference Result 720 states and 1173 transitions. [2024-11-22 11:43:47,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 11:43:47,436 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 1 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 1 states have call successors, (65) Word has length 412 [2024-11-22 11:43:47,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 11:43:47,440 INFO L225 Difference]: With dead ends: 720 [2024-11-22 11:43:47,441 INFO L226 Difference]: Without dead ends: 481 [2024-11-22 11:43:47,442 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 11:43:47,443 INFO L432 NwaCegarLoop]: 355 mSDtfsCounter, 174 mSDsluCounter, 310 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 174 SdHoareTripleChecker+Valid, 665 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 11:43:47,443 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [174 Valid, 665 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 11:43:47,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 481 states. [2024-11-22 11:43:47,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 481 to 479. [2024-11-22 11:43:47,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 479 states, 346 states have (on average 1.5057803468208093) internal successors, (521), 346 states have internal predecessors, (521), 130 states have call successors, (130), 2 states have call predecessors, (130), 2 states have return successors, (130), 130 states have call predecessors, (130), 130 states have call successors, (130) [2024-11-22 11:43:47,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 479 states to 479 states and 781 transitions. [2024-11-22 11:43:47,500 INFO L78 Accepts]: Start accepts. Automaton has 479 states and 781 transitions. Word has length 412 [2024-11-22 11:43:47,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 11:43:47,502 INFO L471 AbstractCegarLoop]: Abstraction has 479 states and 781 transitions. [2024-11-22 11:43:47,502 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 1 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 1 states have call successors, (65) [2024-11-22 11:43:47,502 INFO L276 IsEmpty]: Start isEmpty. Operand 479 states and 781 transitions. [2024-11-22 11:43:47,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 414 [2024-11-22 11:43:47,508 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 11:43:47,509 INFO L215 NwaCegarLoop]: trace histogram [65, 65, 65, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 11:43:47,509 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-22 11:43:47,509 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 11:43:47,510 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 11:43:47,510 INFO L85 PathProgramCache]: Analyzing trace with hash 619670022, now seen corresponding path program 1 times [2024-11-22 11:43:47,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 11:43:47,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947220236] [2024-11-22 11:43:47,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:43:47,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 11:43:47,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:43:48,380 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8320 trivial. 0 not checked. [2024-11-22 11:43:48,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 11:43:48,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947220236] [2024-11-22 11:43:48,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [947220236] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 11:43:48,383 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 11:43:48,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 11:43:48,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445643726] [2024-11-22 11:43:48,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 11:43:48,384 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 11:43:48,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 11:43:48,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 11:43:48,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-22 11:43:48,385 INFO L87 Difference]: Start difference. First operand 479 states and 781 transitions. Second operand has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 1 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 1 states have call successors, (65) [2024-11-22 11:43:48,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 11:43:48,658 INFO L93 Difference]: Finished difference Result 1362 states and 2211 transitions. [2024-11-22 11:43:48,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 11:43:48,660 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 1 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 1 states have call successors, (65) Word has length 413 [2024-11-22 11:43:48,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 11:43:48,666 INFO L225 Difference]: With dead ends: 1362 [2024-11-22 11:43:48,666 INFO L226 Difference]: Without dead ends: 886 [2024-11-22 11:43:48,669 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-22 11:43:48,669 INFO L432 NwaCegarLoop]: 395 mSDtfsCounter, 413 mSDsluCounter, 494 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 413 SdHoareTripleChecker+Valid, 889 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-22 11:43:48,671 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [413 Valid, 889 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-22 11:43:48,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 886 states. [2024-11-22 11:43:48,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 886 to 735. [2024-11-22 11:43:48,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 735 states, 567 states have (on average 1.5361552028218695) internal successors, (871), 568 states have internal predecessors, (871), 163 states have call successors, (163), 4 states have call predecessors, (163), 4 states have return successors, (163), 162 states have call predecessors, (163), 163 states have call successors, (163) [2024-11-22 11:43:48,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 735 states to 735 states and 1197 transitions. [2024-11-22 11:43:48,751 INFO L78 Accepts]: Start accepts. Automaton has 735 states and 1197 transitions. Word has length 413 [2024-11-22 11:43:48,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 11:43:48,752 INFO L471 AbstractCegarLoop]: Abstraction has 735 states and 1197 transitions. [2024-11-22 11:43:48,752 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 1 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 1 states have call successors, (65) [2024-11-22 11:43:48,753 INFO L276 IsEmpty]: Start isEmpty. Operand 735 states and 1197 transitions. [2024-11-22 11:43:48,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 414 [2024-11-22 11:43:48,759 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 11:43:48,760 INFO L215 NwaCegarLoop]: trace histogram [65, 65, 65, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 11:43:48,760 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-22 11:43:48,760 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 11:43:48,761 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 11:43:48,761 INFO L85 PathProgramCache]: Analyzing trace with hash 692056580, now seen corresponding path program 1 times [2024-11-22 11:43:48,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 11:43:48,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606047597] [2024-11-22 11:43:48,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:43:48,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 11:43:49,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:43:49,434 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8320 trivial. 0 not checked. [2024-11-22 11:43:49,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 11:43:49,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1606047597] [2024-11-22 11:43:49,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1606047597] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 11:43:49,434 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 11:43:49,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 11:43:49,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813910411] [2024-11-22 11:43:49,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 11:43:49,435 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 11:43:49,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 11:43:49,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 11:43:49,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-22 11:43:49,436 INFO L87 Difference]: Start difference. First operand 735 states and 1197 transitions. Second operand has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 1 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 1 states have call successors, (65) [2024-11-22 11:43:49,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 11:43:49,674 INFO L93 Difference]: Finished difference Result 1719 states and 2790 transitions. [2024-11-22 11:43:49,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 11:43:49,677 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 1 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 1 states have call successors, (65) Word has length 413 [2024-11-22 11:43:49,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 11:43:49,685 INFO L225 Difference]: With dead ends: 1719 [2024-11-22 11:43:49,685 INFO L226 Difference]: Without dead ends: 1041 [2024-11-22 11:43:49,686 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-22 11:43:49,687 INFO L432 NwaCegarLoop]: 449 mSDtfsCounter, 409 mSDsluCounter, 334 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 409 SdHoareTripleChecker+Valid, 783 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-22 11:43:49,688 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [409 Valid, 783 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-22 11:43:49,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1041 states. [2024-11-22 11:43:49,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1041 to 691. [2024-11-22 11:43:49,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 691 states, 556 states have (on average 1.5575539568345325) internal successors, (866), 556 states have internal predecessors, (866), 130 states have call successors, (130), 4 states have call predecessors, (130), 4 states have return successors, (130), 130 states have call predecessors, (130), 130 states have call successors, (130) [2024-11-22 11:43:49,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 691 states to 691 states and 1126 transitions. [2024-11-22 11:43:49,738 INFO L78 Accepts]: Start accepts. Automaton has 691 states and 1126 transitions. Word has length 413 [2024-11-22 11:43:49,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 11:43:49,739 INFO L471 AbstractCegarLoop]: Abstraction has 691 states and 1126 transitions. [2024-11-22 11:43:49,739 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 1 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 1 states have call successors, (65) [2024-11-22 11:43:49,739 INFO L276 IsEmpty]: Start isEmpty. Operand 691 states and 1126 transitions. [2024-11-22 11:43:49,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 414 [2024-11-22 11:43:49,744 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 11:43:49,744 INFO L215 NwaCegarLoop]: trace histogram [65, 65, 65, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 11:43:49,744 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-22 11:43:49,744 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 11:43:49,744 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 11:43:49,745 INFO L85 PathProgramCache]: Analyzing trace with hash 1291463238, now seen corresponding path program 1 times [2024-11-22 11:43:49,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 11:43:49,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [454984861] [2024-11-22 11:43:49,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:43:49,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 11:43:50,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:43:51,293 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8320 trivial. 0 not checked. [2024-11-22 11:43:51,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 11:43:51,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [454984861] [2024-11-22 11:43:51,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [454984861] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 11:43:51,294 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 11:43:51,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 11:43:51,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285694212] [2024-11-22 11:43:51,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 11:43:51,295 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 11:43:51,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 11:43:51,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 11:43:51,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-22 11:43:51,296 INFO L87 Difference]: Start difference. First operand 691 states and 1126 transitions. Second operand has 5 states, 5 states have (on average 18.2) internal successors, (91), 5 states have internal predecessors, (91), 1 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 1 states have call successors, (65) [2024-11-22 11:43:51,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 11:43:51,675 INFO L93 Difference]: Finished difference Result 1923 states and 3109 transitions. [2024-11-22 11:43:51,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 11:43:51,676 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 5 states have internal predecessors, (91), 1 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 1 states have call successors, (65) Word has length 413 [2024-11-22 11:43:51,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 11:43:51,682 INFO L225 Difference]: With dead ends: 1923 [2024-11-22 11:43:51,682 INFO L226 Difference]: Without dead ends: 1235 [2024-11-22 11:43:51,683 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-22 11:43:51,684 INFO L432 NwaCegarLoop]: 571 mSDtfsCounter, 382 mSDsluCounter, 1010 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 382 SdHoareTripleChecker+Valid, 1581 SdHoareTripleChecker+Invalid, 180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-22 11:43:51,686 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [382 Valid, 1581 Invalid, 180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-22 11:43:51,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1235 states. [2024-11-22 11:43:51,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1235 to 811. [2024-11-22 11:43:51,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 811 states, 676 states have (on average 1.5739644970414202) internal successors, (1064), 676 states have internal predecessors, (1064), 130 states have call successors, (130), 4 states have call predecessors, (130), 4 states have return successors, (130), 130 states have call predecessors, (130), 130 states have call successors, (130) [2024-11-22 11:43:51,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 811 states to 811 states and 1324 transitions. [2024-11-22 11:43:51,745 INFO L78 Accepts]: Start accepts. Automaton has 811 states and 1324 transitions. Word has length 413 [2024-11-22 11:43:51,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 11:43:51,746 INFO L471 AbstractCegarLoop]: Abstraction has 811 states and 1324 transitions. [2024-11-22 11:43:51,746 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 5 states have internal predecessors, (91), 1 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 1 states have call successors, (65) [2024-11-22 11:43:51,746 INFO L276 IsEmpty]: Start isEmpty. Operand 811 states and 1324 transitions. [2024-11-22 11:43:51,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 414 [2024-11-22 11:43:51,750 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 11:43:51,750 INFO L215 NwaCegarLoop]: trace histogram [65, 65, 65, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 11:43:51,751 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-22 11:43:51,751 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 11:43:51,751 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 11:43:51,751 INFO L85 PathProgramCache]: Analyzing trace with hash 1095240774, now seen corresponding path program 1 times [2024-11-22 11:43:51,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 11:43:51,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212802266] [2024-11-22 11:43:51,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:43:51,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 11:43:51,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:43:51,891 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8320 trivial. 0 not checked. [2024-11-22 11:43:51,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 11:43:51,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212802266] [2024-11-22 11:43:51,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1212802266] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 11:43:51,892 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 11:43:51,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 11:43:51,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161579701] [2024-11-22 11:43:51,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 11:43:51,892 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 11:43:51,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 11:43:51,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 11:43:51,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 11:43:51,896 INFO L87 Difference]: Start difference. First operand 811 states and 1324 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 1 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 1 states have call successors, (65) [2024-11-22 11:43:52,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 11:43:52,034 INFO L93 Difference]: Finished difference Result 1933 states and 3132 transitions. [2024-11-22 11:43:52,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 11:43:52,036 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 1 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 1 states have call successors, (65) Word has length 413 [2024-11-22 11:43:52,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 11:43:52,041 INFO L225 Difference]: With dead ends: 1933 [2024-11-22 11:43:52,041 INFO L226 Difference]: Without dead ends: 1125 [2024-11-22 11:43:52,043 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 11:43:52,045 INFO L432 NwaCegarLoop]: 348 mSDtfsCounter, 289 mSDsluCounter, 304 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 289 SdHoareTripleChecker+Valid, 652 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 11:43:52,045 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [289 Valid, 652 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 11:43:52,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1125 states. [2024-11-22 11:43:52,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1125 to 747. [2024-11-22 11:43:52,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 747 states, 612 states have (on average 1.5555555555555556) internal successors, (952), 612 states have internal predecessors, (952), 130 states have call successors, (130), 4 states have call predecessors, (130), 4 states have return successors, (130), 130 states have call predecessors, (130), 130 states have call successors, (130) [2024-11-22 11:43:52,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 747 states to 747 states and 1212 transitions. [2024-11-22 11:43:52,112 INFO L78 Accepts]: Start accepts. Automaton has 747 states and 1212 transitions. Word has length 413 [2024-11-22 11:43:52,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 11:43:52,112 INFO L471 AbstractCegarLoop]: Abstraction has 747 states and 1212 transitions. [2024-11-22 11:43:52,113 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 1 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 1 states have call successors, (65) [2024-11-22 11:43:52,113 INFO L276 IsEmpty]: Start isEmpty. Operand 747 states and 1212 transitions. [2024-11-22 11:43:52,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 415 [2024-11-22 11:43:52,118 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 11:43:52,118 INFO L215 NwaCegarLoop]: trace histogram [65, 65, 65, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 11:43:52,119 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-22 11:43:52,119 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 11:43:52,119 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 11:43:52,120 INFO L85 PathProgramCache]: Analyzing trace with hash 467581436, now seen corresponding path program 1 times [2024-11-22 11:43:52,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 11:43:52,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699155421] [2024-11-22 11:43:52,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:43:52,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 11:43:52,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:43:53,000 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8320 trivial. 0 not checked. [2024-11-22 11:43:53,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 11:43:53,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699155421] [2024-11-22 11:43:53,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1699155421] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 11:43:53,001 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 11:43:53,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 11:43:53,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669633830] [2024-11-22 11:43:53,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 11:43:53,001 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 11:43:53,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 11:43:53,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 11:43:53,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 11:43:53,002 INFO L87 Difference]: Start difference. First operand 747 states and 1212 transitions. Second operand has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 1 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 1 states have call successors, (65) [2024-11-22 11:43:53,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 11:43:53,466 INFO L93 Difference]: Finished difference Result 2581 states and 4189 transitions. [2024-11-22 11:43:53,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 11:43:53,467 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 1 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 1 states have call successors, (65) Word has length 414 [2024-11-22 11:43:53,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 11:43:53,474 INFO L225 Difference]: With dead ends: 2581 [2024-11-22 11:43:53,474 INFO L226 Difference]: Without dead ends: 1837 [2024-11-22 11:43:53,476 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-22 11:43:53,477 INFO L432 NwaCegarLoop]: 309 mSDtfsCounter, 459 mSDsluCounter, 515 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 152 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 459 SdHoareTripleChecker+Valid, 824 SdHoareTripleChecker+Invalid, 278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 152 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-22 11:43:53,477 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [459 Valid, 824 Invalid, 278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [152 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-22 11:43:53,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1837 states. [2024-11-22 11:43:53,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1837 to 1501. [2024-11-22 11:43:53,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1501 states, 1288 states have (on average 1.5745341614906831) internal successors, (2028), 1290 states have internal predecessors, (2028), 204 states have call successors, (204), 8 states have call predecessors, (204), 8 states have return successors, (204), 202 states have call predecessors, (204), 204 states have call successors, (204) [2024-11-22 11:43:53,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1501 states to 1501 states and 2436 transitions. [2024-11-22 11:43:53,616 INFO L78 Accepts]: Start accepts. Automaton has 1501 states and 2436 transitions. Word has length 414 [2024-11-22 11:43:53,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 11:43:53,616 INFO L471 AbstractCegarLoop]: Abstraction has 1501 states and 2436 transitions. [2024-11-22 11:43:53,617 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 1 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 1 states have call successors, (65) [2024-11-22 11:43:53,617 INFO L276 IsEmpty]: Start isEmpty. Operand 1501 states and 2436 transitions. [2024-11-22 11:43:53,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 415 [2024-11-22 11:43:53,619 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 11:43:53,620 INFO L215 NwaCegarLoop]: trace histogram [65, 65, 65, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 11:43:53,620 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-22 11:43:53,620 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 11:43:53,620 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 11:43:53,621 INFO L85 PathProgramCache]: Analyzing trace with hash -350067014, now seen corresponding path program 1 times [2024-11-22 11:43:53,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 11:43:53,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129752115] [2024-11-22 11:43:53,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:43:53,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 11:43:53,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:43:55,034 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8320 trivial. 0 not checked. [2024-11-22 11:43:55,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 11:43:55,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129752115] [2024-11-22 11:43:55,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [129752115] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 11:43:55,035 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 11:43:55,035 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 11:43:55,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946278620] [2024-11-22 11:43:55,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 11:43:55,036 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 11:43:55,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 11:43:55,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 11:43:55,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-22 11:43:55,037 INFO L87 Difference]: Start difference. First operand 1501 states and 2436 transitions. Second operand has 5 states, 5 states have (on average 18.4) internal successors, (92), 5 states have internal predecessors, (92), 1 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 1 states have call successors, (65) [2024-11-22 11:43:55,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 11:43:55,819 INFO L93 Difference]: Finished difference Result 3935 states and 6331 transitions. [2024-11-22 11:43:55,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 11:43:55,820 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.4) internal successors, (92), 5 states have internal predecessors, (92), 1 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 1 states have call successors, (65) Word has length 414 [2024-11-22 11:43:55,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 11:43:55,831 INFO L225 Difference]: With dead ends: 3935 [2024-11-22 11:43:55,831 INFO L226 Difference]: Without dead ends: 2437 [2024-11-22 11:43:55,834 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-22 11:43:55,835 INFO L432 NwaCegarLoop]: 343 mSDtfsCounter, 405 mSDsluCounter, 767 mSDsCounter, 0 mSdLazyCounter, 258 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 405 SdHoareTripleChecker+Valid, 1110 SdHoareTripleChecker+Invalid, 259 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-22 11:43:55,835 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [405 Valid, 1110 Invalid, 259 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 258 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-22 11:43:55,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2437 states. [2024-11-22 11:43:55,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2437 to 1611. [2024-11-22 11:43:55,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1611 states, 1398 states have (on average 1.5822603719599428) internal successors, (2212), 1400 states have internal predecessors, (2212), 204 states have call successors, (204), 8 states have call predecessors, (204), 8 states have return successors, (204), 202 states have call predecessors, (204), 204 states have call successors, (204) [2024-11-22 11:43:55,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1611 states to 1611 states and 2620 transitions. [2024-11-22 11:43:55,955 INFO L78 Accepts]: Start accepts. Automaton has 1611 states and 2620 transitions. Word has length 414 [2024-11-22 11:43:55,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 11:43:55,956 INFO L471 AbstractCegarLoop]: Abstraction has 1611 states and 2620 transitions. [2024-11-22 11:43:55,956 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.4) internal successors, (92), 5 states have internal predecessors, (92), 1 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 1 states have call successors, (65) [2024-11-22 11:43:55,956 INFO L276 IsEmpty]: Start isEmpty. Operand 1611 states and 2620 transitions. [2024-11-22 11:43:55,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 415 [2024-11-22 11:43:55,958 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 11:43:55,959 INFO L215 NwaCegarLoop]: trace histogram [65, 65, 65, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 11:43:55,959 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-22 11:43:55,959 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 11:43:55,959 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 11:43:55,959 INFO L85 PathProgramCache]: Analyzing trace with hash 2139461948, now seen corresponding path program 1 times [2024-11-22 11:43:55,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 11:43:55,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467151086] [2024-11-22 11:43:55,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:43:55,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 11:43:56,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:43:57,417 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8320 trivial. 0 not checked. [2024-11-22 11:43:57,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 11:43:57,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [467151086] [2024-11-22 11:43:57,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [467151086] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 11:43:57,417 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 11:43:57,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 11:43:57,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084358270] [2024-11-22 11:43:57,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 11:43:57,418 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 11:43:57,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 11:43:57,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 11:43:57,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-22 11:43:57,419 INFO L87 Difference]: Start difference. First operand 1611 states and 2620 transitions. Second operand has 5 states, 5 states have (on average 18.4) internal successors, (92), 5 states have internal predecessors, (92), 1 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 1 states have call successors, (65) [2024-11-22 11:43:57,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 11:43:57,734 INFO L93 Difference]: Finished difference Result 4045 states and 6507 transitions. [2024-11-22 11:43:57,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 11:43:57,735 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.4) internal successors, (92), 5 states have internal predecessors, (92), 1 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 1 states have call successors, (65) Word has length 414 [2024-11-22 11:43:57,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 11:43:57,745 INFO L225 Difference]: With dead ends: 4045 [2024-11-22 11:43:57,745 INFO L226 Difference]: Without dead ends: 2437 [2024-11-22 11:43:57,748 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-22 11:43:57,749 INFO L432 NwaCegarLoop]: 433 mSDtfsCounter, 360 mSDsluCounter, 1064 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 360 SdHoareTripleChecker+Valid, 1497 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 11:43:57,749 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [360 Valid, 1497 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 11:43:57,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2437 states. [2024-11-22 11:43:57,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2437 to 1325. [2024-11-22 11:43:57,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1325 states, 1112 states have (on average 1.5611510791366907) internal successors, (1736), 1114 states have internal predecessors, (1736), 204 states have call successors, (204), 8 states have call predecessors, (204), 8 states have return successors, (204), 202 states have call predecessors, (204), 204 states have call successors, (204) [2024-11-22 11:43:57,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1325 states to 1325 states and 2144 transitions. [2024-11-22 11:43:57,870 INFO L78 Accepts]: Start accepts. Automaton has 1325 states and 2144 transitions. Word has length 414 [2024-11-22 11:43:57,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 11:43:57,871 INFO L471 AbstractCegarLoop]: Abstraction has 1325 states and 2144 transitions. [2024-11-22 11:43:57,871 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.4) internal successors, (92), 5 states have internal predecessors, (92), 1 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 1 states have call successors, (65) [2024-11-22 11:43:57,871 INFO L276 IsEmpty]: Start isEmpty. Operand 1325 states and 2144 transitions. [2024-11-22 11:43:57,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 417 [2024-11-22 11:43:57,873 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 11:43:57,874 INFO L215 NwaCegarLoop]: trace histogram [65, 65, 65, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 11:43:57,874 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-22 11:43:57,874 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 11:43:57,874 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 11:43:57,874 INFO L85 PathProgramCache]: Analyzing trace with hash 535581100, now seen corresponding path program 1 times [2024-11-22 11:43:57,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 11:43:57,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264588201] [2024-11-22 11:43:57,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:43:57,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 11:43:58,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:43:58,444 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 99 proven. 93 refuted. 0 times theorem prover too weak. 8128 trivial. 0 not checked. [2024-11-22 11:43:58,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 11:43:58,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264588201] [2024-11-22 11:43:58,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [264588201] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 11:43:58,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1721073414] [2024-11-22 11:43:58,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:43:58,445 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 11:43:58,445 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 11:43:58,446 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 11:43:58,450 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-22 11:43:58,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:43:58,683 INFO L255 TraceCheckSpWp]: Trace formula consists of 951 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-22 11:43:58,692 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 11:43:58,968 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 3844 proven. 66 refuted. 0 times theorem prover too weak. 4410 trivial. 0 not checked. [2024-11-22 11:43:58,968 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 11:43:59,284 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 126 proven. 66 refuted. 0 times theorem prover too weak. 8128 trivial. 0 not checked. [2024-11-22 11:43:59,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1721073414] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 11:43:59,285 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 11:43:59,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2024-11-22 11:43:59,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481375203] [2024-11-22 11:43:59,285 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 11:43:59,286 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-22 11:43:59,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 11:43:59,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-22 11:43:59,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-22 11:43:59,287 INFO L87 Difference]: Start difference. First operand 1325 states and 2144 transitions. Second operand has 8 states, 8 states have (on average 16.75) internal successors, (134), 8 states have internal predecessors, (134), 3 states have call successors, (118), 2 states have call predecessors, (118), 4 states have return successors, (120), 3 states have call predecessors, (120), 3 states have call successors, (120) [2024-11-22 11:44:00,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 11:44:00,207 INFO L93 Difference]: Finished difference Result 2536 states and 4052 transitions. [2024-11-22 11:44:00,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-22 11:44:00,208 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 16.75) internal successors, (134), 8 states have internal predecessors, (134), 3 states have call successors, (118), 2 states have call predecessors, (118), 4 states have return successors, (120), 3 states have call predecessors, (120), 3 states have call successors, (120) Word has length 416 [2024-11-22 11:44:00,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 11:44:00,214 INFO L225 Difference]: With dead ends: 2536 [2024-11-22 11:44:00,214 INFO L226 Difference]: Without dead ends: 1214 [2024-11-22 11:44:00,216 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 846 GetRequests, 829 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=103, Invalid=203, Unknown=0, NotChecked=0, Total=306 [2024-11-22 11:44:00,217 INFO L432 NwaCegarLoop]: 294 mSDtfsCounter, 662 mSDsluCounter, 444 mSDsCounter, 0 mSdLazyCounter, 566 mSolverCounterSat, 285 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 696 SdHoareTripleChecker+Valid, 738 SdHoareTripleChecker+Invalid, 851 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 285 IncrementalHoareTripleChecker+Valid, 566 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-22 11:44:00,217 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [696 Valid, 738 Invalid, 851 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [285 Valid, 566 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-22 11:44:00,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1214 states. [2024-11-22 11:44:00,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1214 to 1137. [2024-11-22 11:44:00,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1137 states, 918 states have (on average 1.5054466230936818) internal successors, (1382), 920 states have internal predecessors, (1382), 204 states have call successors, (204), 14 states have call predecessors, (204), 14 states have return successors, (204), 202 states have call predecessors, (204), 204 states have call successors, (204) [2024-11-22 11:44:00,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1137 states to 1137 states and 1790 transitions. [2024-11-22 11:44:00,320 INFO L78 Accepts]: Start accepts. Automaton has 1137 states and 1790 transitions. Word has length 416 [2024-11-22 11:44:00,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 11:44:00,320 INFO L471 AbstractCegarLoop]: Abstraction has 1137 states and 1790 transitions. [2024-11-22 11:44:00,321 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.75) internal successors, (134), 8 states have internal predecessors, (134), 3 states have call successors, (118), 2 states have call predecessors, (118), 4 states have return successors, (120), 3 states have call predecessors, (120), 3 states have call successors, (120) [2024-11-22 11:44:00,321 INFO L276 IsEmpty]: Start isEmpty. Operand 1137 states and 1790 transitions. [2024-11-22 11:44:00,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 418 [2024-11-22 11:44:00,323 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 11:44:00,323 INFO L215 NwaCegarLoop]: trace histogram [65, 65, 65, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 11:44:00,332 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-22 11:44:00,527 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,SelfDestructingSolverStorable12 [2024-11-22 11:44:00,528 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 11:44:00,528 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 11:44:00,529 INFO L85 PathProgramCache]: Analyzing trace with hash 629122746, now seen corresponding path program 1 times [2024-11-22 11:44:00,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 11:44:00,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008461386] [2024-11-22 11:44:00,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:44:00,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 11:44:00,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:44:00,856 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8320 trivial. 0 not checked. [2024-11-22 11:44:00,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 11:44:00,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008461386] [2024-11-22 11:44:00,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1008461386] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 11:44:00,857 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 11:44:00,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 11:44:00,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465031333] [2024-11-22 11:44:00,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 11:44:00,859 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 11:44:00,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 11:44:00,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 11:44:00,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-22 11:44:00,860 INFO L87 Difference]: Start difference. First operand 1137 states and 1790 transitions. Second operand has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 1 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 1 states have call successors, (65) [2024-11-22 11:44:01,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 11:44:01,167 INFO L93 Difference]: Finished difference Result 2041 states and 3180 transitions. [2024-11-22 11:44:01,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 11:44:01,168 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 1 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 1 states have call successors, (65) Word has length 417 [2024-11-22 11:44:01,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 11:44:01,175 INFO L225 Difference]: With dead ends: 2041 [2024-11-22 11:44:01,175 INFO L226 Difference]: Without dead ends: 1473 [2024-11-22 11:44:01,176 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-22 11:44:01,177 INFO L432 NwaCegarLoop]: 355 mSDtfsCounter, 360 mSDsluCounter, 305 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 360 SdHoareTripleChecker+Valid, 660 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 11:44:01,177 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [360 Valid, 660 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 11:44:01,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1473 states. [2024-11-22 11:44:01,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1473 to 1247. [2024-11-22 11:44:01,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1247 states, 981 states have (on average 1.4852191641182466) internal successors, (1457), 984 states have internal predecessors, (1457), 245 states have call successors, (245), 20 states have call predecessors, (245), 20 states have return successors, (245), 242 states have call predecessors, (245), 245 states have call successors, (245) [2024-11-22 11:44:01,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1247 states to 1247 states and 1947 transitions. [2024-11-22 11:44:01,363 INFO L78 Accepts]: Start accepts. Automaton has 1247 states and 1947 transitions. Word has length 417 [2024-11-22 11:44:01,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 11:44:01,363 INFO L471 AbstractCegarLoop]: Abstraction has 1247 states and 1947 transitions. [2024-11-22 11:44:01,364 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 1 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 1 states have call successors, (65) [2024-11-22 11:44:01,364 INFO L276 IsEmpty]: Start isEmpty. Operand 1247 states and 1947 transitions. [2024-11-22 11:44:01,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 418 [2024-11-22 11:44:01,367 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 11:44:01,367 INFO L215 NwaCegarLoop]: trace histogram [65, 65, 65, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 11:44:01,368 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-22 11:44:01,368 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 11:44:01,368 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 11:44:01,368 INFO L85 PathProgramCache]: Analyzing trace with hash 1487626249, now seen corresponding path program 1 times [2024-11-22 11:44:01,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 11:44:01,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902551365] [2024-11-22 11:44:01,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:44:01,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 11:44:01,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:44:02,115 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 0 proven. 192 refuted. 0 times theorem prover too weak. 8128 trivial. 0 not checked. [2024-11-22 11:44:02,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 11:44:02,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [902551365] [2024-11-22 11:44:02,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [902551365] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 11:44:02,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [150980936] [2024-11-22 11:44:02,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:44:02,116 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 11:44:02,116 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 11:44:02,118 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 11:44:02,119 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-22 11:44:02,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:44:02,328 INFO L255 TraceCheckSpWp]: Trace formula consists of 947 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-22 11:44:02,335 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 11:44:03,329 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 3836 proven. 192 refuted. 0 times theorem prover too weak. 4292 trivial. 0 not checked. [2024-11-22 11:44:03,329 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 11:44:03,824 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 0 proven. 192 refuted. 0 times theorem prover too weak. 8128 trivial. 0 not checked. [2024-11-22 11:44:03,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [150980936] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 11:44:03,825 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 11:44:03,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2024-11-22 11:44:03,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534635698] [2024-11-22 11:44:03,825 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 11:44:03,826 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-22 11:44:03,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 11:44:03,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-22 11:44:03,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2024-11-22 11:44:03,828 INFO L87 Difference]: Start difference. First operand 1247 states and 1947 transitions. Second operand has 11 states, 11 states have (on average 21.0) internal successors, (231), 11 states have internal predecessors, (231), 6 states have call successors, (193), 3 states have call predecessors, (193), 5 states have return successors, (194), 5 states have call predecessors, (194), 6 states have call successors, (194) [2024-11-22 11:44:04,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 11:44:04,433 INFO L93 Difference]: Finished difference Result 2467 states and 3820 transitions. [2024-11-22 11:44:04,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-22 11:44:04,434 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 21.0) internal successors, (231), 11 states have internal predecessors, (231), 6 states have call successors, (193), 3 states have call predecessors, (193), 5 states have return successors, (194), 5 states have call predecessors, (194), 6 states have call successors, (194) Word has length 417 [2024-11-22 11:44:04,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 11:44:04,442 INFO L225 Difference]: With dead ends: 2467 [2024-11-22 11:44:04,442 INFO L226 Difference]: Without dead ends: 1305 [2024-11-22 11:44:04,446 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 844 GetRequests, 829 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=101, Invalid=171, Unknown=0, NotChecked=0, Total=272 [2024-11-22 11:44:04,447 INFO L432 NwaCegarLoop]: 233 mSDtfsCounter, 433 mSDsluCounter, 348 mSDsCounter, 0 mSdLazyCounter, 435 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 433 SdHoareTripleChecker+Valid, 581 SdHoareTripleChecker+Invalid, 447 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 435 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-22 11:44:04,447 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [433 Valid, 581 Invalid, 447 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 435 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-22 11:44:04,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1305 states. [2024-11-22 11:44:04,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1305 to 1287. [2024-11-22 11:44:04,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1287 states, 1011 states have (on average 1.4549950544015826) internal successors, (1471), 1014 states have internal predecessors, (1471), 245 states have call successors, (245), 30 states have call predecessors, (245), 30 states have return successors, (245), 242 states have call predecessors, (245), 245 states have call successors, (245) [2024-11-22 11:44:04,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1287 states to 1287 states and 1961 transitions. [2024-11-22 11:44:04,623 INFO L78 Accepts]: Start accepts. Automaton has 1287 states and 1961 transitions. Word has length 417 [2024-11-22 11:44:04,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 11:44:04,624 INFO L471 AbstractCegarLoop]: Abstraction has 1287 states and 1961 transitions. [2024-11-22 11:44:04,628 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 21.0) internal successors, (231), 11 states have internal predecessors, (231), 6 states have call successors, (193), 3 states have call predecessors, (193), 5 states have return successors, (194), 5 states have call predecessors, (194), 6 states have call successors, (194) [2024-11-22 11:44:04,628 INFO L276 IsEmpty]: Start isEmpty. Operand 1287 states and 1961 transitions. [2024-11-22 11:44:04,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 419 [2024-11-22 11:44:04,630 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 11:44:04,631 INFO L215 NwaCegarLoop]: trace histogram [65, 65, 65, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 11:44:04,643 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-22 11:44:04,831 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 11:44:04,832 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 11:44:04,832 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 11:44:04,832 INFO L85 PathProgramCache]: Analyzing trace with hash -1364403856, now seen corresponding path program 1 times [2024-11-22 11:44:04,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 11:44:04,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056245933] [2024-11-22 11:44:04,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:44:04,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 11:44:05,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:44:15,884 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 0 proven. 192 refuted. 0 times theorem prover too weak. 8128 trivial. 0 not checked. [2024-11-22 11:44:15,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 11:44:15,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056245933] [2024-11-22 11:44:15,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2056245933] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 11:44:15,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [486192768] [2024-11-22 11:44:15,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:44:15,885 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 11:44:15,886 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 11:44:15,887 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 11:44:15,889 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-22 11:44:16,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:44:16,121 INFO L255 TraceCheckSpWp]: Trace formula consists of 948 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-22 11:44:16,126 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 11:44:16,354 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 4134 proven. 81 refuted. 0 times theorem prover too weak. 4105 trivial. 0 not checked. [2024-11-22 11:44:16,355 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 11:44:16,626 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 111 proven. 81 refuted. 0 times theorem prover too weak. 8128 trivial. 0 not checked. [2024-11-22 11:44:16,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [486192768] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 11:44:16,626 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 11:44:16,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5, 5] total 12 [2024-11-22 11:44:16,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43117545] [2024-11-22 11:44:16,627 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 11:44:16,627 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-22 11:44:16,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 11:44:16,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-22 11:44:16,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-11-22 11:44:16,632 INFO L87 Difference]: Start difference. First operand 1287 states and 1961 transitions. Second operand has 12 states, 12 states have (on average 14.333333333333334) internal successors, (172), 12 states have internal predecessors, (172), 5 states have call successors, (157), 2 states have call predecessors, (157), 4 states have return successors, (158), 4 states have call predecessors, (158), 5 states have call successors, (158) [2024-11-22 11:44:18,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 11:44:18,942 INFO L93 Difference]: Finished difference Result 2857 states and 4359 transitions. [2024-11-22 11:44:18,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-22 11:44:18,944 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 14.333333333333334) internal successors, (172), 12 states have internal predecessors, (172), 5 states have call successors, (157), 2 states have call predecessors, (157), 4 states have return successors, (158), 4 states have call predecessors, (158), 5 states have call successors, (158) Word has length 418 [2024-11-22 11:44:18,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 11:44:18,951 INFO L225 Difference]: With dead ends: 2857 [2024-11-22 11:44:18,951 INFO L226 Difference]: Without dead ends: 1663 [2024-11-22 11:44:18,954 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 865 GetRequests, 835 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=237, Invalid=693, Unknown=0, NotChecked=0, Total=930 [2024-11-22 11:44:18,954 INFO L432 NwaCegarLoop]: 446 mSDtfsCounter, 1453 mSDsluCounter, 1615 mSDsCounter, 0 mSdLazyCounter, 1419 mSolverCounterSat, 431 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1490 SdHoareTripleChecker+Valid, 2061 SdHoareTripleChecker+Invalid, 1850 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 431 IncrementalHoareTripleChecker+Valid, 1419 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-22 11:44:18,955 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1490 Valid, 2061 Invalid, 1850 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [431 Valid, 1419 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-22 11:44:18,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1663 states. [2024-11-22 11:44:19,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1663 to 1435. [2024-11-22 11:44:19,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1435 states, 1094 states have (on average 1.4314442413162705) internal successors, (1566), 1095 states have internal predecessors, (1566), 301 states have call successors, (301), 39 states have call predecessors, (301), 39 states have return successors, (301), 300 states have call predecessors, (301), 301 states have call successors, (301) [2024-11-22 11:44:19,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1435 states to 1435 states and 2168 transitions. [2024-11-22 11:44:19,081 INFO L78 Accepts]: Start accepts. Automaton has 1435 states and 2168 transitions. Word has length 418 [2024-11-22 11:44:19,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 11:44:19,081 INFO L471 AbstractCegarLoop]: Abstraction has 1435 states and 2168 transitions. [2024-11-22 11:44:19,082 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 14.333333333333334) internal successors, (172), 12 states have internal predecessors, (172), 5 states have call successors, (157), 2 states have call predecessors, (157), 4 states have return successors, (158), 4 states have call predecessors, (158), 5 states have call successors, (158) [2024-11-22 11:44:19,082 INFO L276 IsEmpty]: Start isEmpty. Operand 1435 states and 2168 transitions. [2024-11-22 11:44:19,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 420 [2024-11-22 11:44:19,086 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 11:44:19,086 INFO L215 NwaCegarLoop]: trace histogram [65, 65, 65, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 11:44:19,097 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-22 11:44:19,286 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-22 11:44:19,287 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 11:44:19,288 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 11:44:19,288 INFO L85 PathProgramCache]: Analyzing trace with hash 1923300623, now seen corresponding path program 1 times [2024-11-22 11:44:19,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 11:44:19,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175877264] [2024-11-22 11:44:19,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:44:19,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 11:44:19,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:44:19,859 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 105 proven. 87 refuted. 0 times theorem prover too weak. 8128 trivial. 0 not checked. [2024-11-22 11:44:19,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 11:44:19,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175877264] [2024-11-22 11:44:19,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [175877264] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 11:44:19,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1800558371] [2024-11-22 11:44:19,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:44:19,860 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 11:44:19,860 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 11:44:19,864 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 11:44:19,866 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-22 11:44:20,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:44:20,091 INFO L255 TraceCheckSpWp]: Trace formula consists of 946 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-22 11:44:20,096 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 11:44:20,452 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 4194 proven. 87 refuted. 0 times theorem prover too weak. 4039 trivial. 0 not checked. [2024-11-22 11:44:20,453 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 11:44:20,735 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 105 proven. 87 refuted. 0 times theorem prover too weak. 8128 trivial. 0 not checked. [2024-11-22 11:44:20,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1800558371] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 11:44:20,735 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 11:44:20,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 7 [2024-11-22 11:44:20,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971654857] [2024-11-22 11:44:20,735 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 11:44:20,736 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-22 11:44:20,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 11:44:20,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-22 11:44:20,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-22 11:44:20,737 INFO L87 Difference]: Start difference. First operand 1435 states and 2168 transitions. Second operand has 7 states, 7 states have (on average 15.142857142857142) internal successors, (106), 7 states have internal predecessors, (106), 2 states have call successors, (94), 2 states have call predecessors, (94), 4 states have return successors, (95), 2 states have call predecessors, (95), 2 states have call successors, (95) [2024-11-22 11:44:21,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 11:44:21,310 INFO L93 Difference]: Finished difference Result 2819 states and 4246 transitions. [2024-11-22 11:44:21,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-22 11:44:21,311 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.142857142857142) internal successors, (106), 7 states have internal predecessors, (106), 2 states have call successors, (94), 2 states have call predecessors, (94), 4 states have return successors, (95), 2 states have call predecessors, (95), 2 states have call successors, (95) Word has length 419 [2024-11-22 11:44:21,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 11:44:21,318 INFO L225 Difference]: With dead ends: 2819 [2024-11-22 11:44:21,318 INFO L226 Difference]: Without dead ends: 1481 [2024-11-22 11:44:21,320 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 845 GetRequests, 835 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2024-11-22 11:44:21,321 INFO L432 NwaCegarLoop]: 300 mSDtfsCounter, 400 mSDsluCounter, 369 mSDsCounter, 0 mSdLazyCounter, 449 mSolverCounterSat, 147 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 435 SdHoareTripleChecker+Valid, 669 SdHoareTripleChecker+Invalid, 596 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 147 IncrementalHoareTripleChecker+Valid, 449 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-22 11:44:21,321 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [435 Valid, 669 Invalid, 596 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [147 Valid, 449 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-22 11:44:21,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1481 states. [2024-11-22 11:44:21,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1481 to 1455. [2024-11-22 11:44:21,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1455 states, 1109 states have (on average 1.418394950405771) internal successors, (1573), 1110 states have internal predecessors, (1573), 301 states have call successors, (301), 44 states have call predecessors, (301), 44 states have return successors, (301), 300 states have call predecessors, (301), 301 states have call successors, (301) [2024-11-22 11:44:21,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1455 states to 1455 states and 2175 transitions. [2024-11-22 11:44:21,443 INFO L78 Accepts]: Start accepts. Automaton has 1455 states and 2175 transitions. Word has length 419 [2024-11-22 11:44:21,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 11:44:21,444 INFO L471 AbstractCegarLoop]: Abstraction has 1455 states and 2175 transitions. [2024-11-22 11:44:21,444 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.142857142857142) internal successors, (106), 7 states have internal predecessors, (106), 2 states have call successors, (94), 2 states have call predecessors, (94), 4 states have return successors, (95), 2 states have call predecessors, (95), 2 states have call successors, (95) [2024-11-22 11:44:21,444 INFO L276 IsEmpty]: Start isEmpty. Operand 1455 states and 2175 transitions. [2024-11-22 11:44:21,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 421 [2024-11-22 11:44:21,446 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 11:44:21,446 INFO L215 NwaCegarLoop]: trace histogram [65, 65, 65, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 11:44:21,455 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-22 11:44:21,650 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-22 11:44:21,651 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 11:44:21,651 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 11:44:21,652 INFO L85 PathProgramCache]: Analyzing trace with hash -741641724, now seen corresponding path program 1 times [2024-11-22 11:44:21,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 11:44:21,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352046138] [2024-11-22 11:44:21,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:44:21,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 11:44:21,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:44:23,434 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 162 proven. 216 refuted. 0 times theorem prover too weak. 7942 trivial. 0 not checked. [2024-11-22 11:44:23,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 11:44:23,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1352046138] [2024-11-22 11:44:23,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1352046138] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 11:44:23,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [687517758] [2024-11-22 11:44:23,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:44:23,435 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 11:44:23,435 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 11:44:23,437 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 11:44:23,445 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-22 11:44:23,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:44:23,673 INFO L255 TraceCheckSpWp]: Trace formula consists of 946 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-22 11:44:23,678 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 11:44:24,902 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 628 proven. 366 refuted. 0 times theorem prover too weak. 7326 trivial. 0 not checked. [2024-11-22 11:44:24,902 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 11:44:25,299 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 6 proven. 186 refuted. 0 times theorem prover too weak. 8128 trivial. 0 not checked. [2024-11-22 11:44:25,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [687517758] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 11:44:25,299 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 11:44:25,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 5] total 15 [2024-11-22 11:44:25,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381141976] [2024-11-22 11:44:25,299 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 11:44:25,300 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-22 11:44:25,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 11:44:25,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-22 11:44:25,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2024-11-22 11:44:25,302 INFO L87 Difference]: Start difference. First operand 1455 states and 2175 transitions. Second operand has 15 states, 15 states have (on average 15.8) internal successors, (237), 15 states have internal predecessors, (237), 5 states have call successors, (189), 3 states have call predecessors, (189), 5 states have return successors, (190), 5 states have call predecessors, (190), 5 states have call successors, (190) [2024-11-22 11:44:26,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 11:44:26,243 INFO L93 Difference]: Finished difference Result 2919 states and 4307 transitions. [2024-11-22 11:44:26,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-22 11:44:26,243 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 15.8) internal successors, (237), 15 states have internal predecessors, (237), 5 states have call successors, (189), 3 states have call predecessors, (189), 5 states have return successors, (190), 5 states have call predecessors, (190), 5 states have call successors, (190) Word has length 420 [2024-11-22 11:44:26,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 11:44:26,250 INFO L225 Difference]: With dead ends: 2919 [2024-11-22 11:44:26,250 INFO L226 Difference]: Without dead ends: 1565 [2024-11-22 11:44:26,253 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 862 GetRequests, 838 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=190, Invalid=410, Unknown=0, NotChecked=0, Total=600 [2024-11-22 11:44:26,253 INFO L432 NwaCegarLoop]: 211 mSDtfsCounter, 346 mSDsluCounter, 759 mSDsCounter, 0 mSdLazyCounter, 1061 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 346 SdHoareTripleChecker+Valid, 970 SdHoareTripleChecker+Invalid, 1103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 1061 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-22 11:44:26,253 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [346 Valid, 970 Invalid, 1103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 1061 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-22 11:44:26,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1565 states. [2024-11-22 11:44:26,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1565 to 1531. [2024-11-22 11:44:26,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1531 states, 1166 states have (on average 1.3773584905660377) internal successors, (1606), 1167 states have internal predecessors, (1606), 301 states have call successors, (301), 63 states have call predecessors, (301), 63 states have return successors, (301), 300 states have call predecessors, (301), 301 states have call successors, (301) [2024-11-22 11:44:26,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1531 states to 1531 states and 2208 transitions. [2024-11-22 11:44:26,395 INFO L78 Accepts]: Start accepts. Automaton has 1531 states and 2208 transitions. Word has length 420 [2024-11-22 11:44:26,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 11:44:26,395 INFO L471 AbstractCegarLoop]: Abstraction has 1531 states and 2208 transitions. [2024-11-22 11:44:26,396 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 15.8) internal successors, (237), 15 states have internal predecessors, (237), 5 states have call successors, (189), 3 states have call predecessors, (189), 5 states have return successors, (190), 5 states have call predecessors, (190), 5 states have call successors, (190) [2024-11-22 11:44:26,396 INFO L276 IsEmpty]: Start isEmpty. Operand 1531 states and 2208 transitions. [2024-11-22 11:44:26,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 423 [2024-11-22 11:44:26,398 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 11:44:26,398 INFO L215 NwaCegarLoop]: trace histogram [65, 65, 65, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 11:44:26,407 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-22 11:44:26,598 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-22 11:44:26,599 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 11:44:26,599 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 11:44:26,600 INFO L85 PathProgramCache]: Analyzing trace with hash -1169819797, now seen corresponding path program 1 times [2024-11-22 11:44:26,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 11:44:26,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528736528] [2024-11-22 11:44:26,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:44:26,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 11:44:26,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:44:27,822 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 339 proven. 219 refuted. 0 times theorem prover too weak. 7762 trivial. 0 not checked. [2024-11-22 11:44:27,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 11:44:27,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528736528] [2024-11-22 11:44:27,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1528736528] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 11:44:27,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1622377041] [2024-11-22 11:44:27,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:44:27,822 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 11:44:27,823 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 11:44:27,825 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 11:44:27,826 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-22 11:44:28,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:44:28,057 INFO L255 TraceCheckSpWp]: Trace formula consists of 952 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-11-22 11:44:28,063 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 11:44:29,217 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 4842 proven. 420 refuted. 0 times theorem prover too weak. 3058 trivial. 0 not checked. [2024-11-22 11:44:29,217 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 11:44:30,250 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 318 proven. 63 refuted. 0 times theorem prover too weak. 7939 trivial. 0 not checked. [2024-11-22 11:44:30,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1622377041] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 11:44:30,250 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 11:44:30,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 15, 9] total 26 [2024-11-22 11:44:30,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490953741] [2024-11-22 11:44:30,251 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 11:44:30,251 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-22 11:44:30,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 11:44:30,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-22 11:44:30,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=505, Unknown=0, NotChecked=0, Total=650 [2024-11-22 11:44:30,253 INFO L87 Difference]: Start difference. First operand 1531 states and 2208 transitions. Second operand has 26 states, 24 states have (on average 9.375) internal successors, (225), 23 states have internal predecessors, (225), 9 states have call successors, (175), 5 states have call predecessors, (175), 10 states have return successors, (177), 9 states have call predecessors, (177), 9 states have call successors, (177) [2024-11-22 11:44:34,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 11:44:34,873 INFO L93 Difference]: Finished difference Result 5835 states and 8171 transitions. [2024-11-22 11:44:34,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2024-11-22 11:44:34,874 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 24 states have (on average 9.375) internal successors, (225), 23 states have internal predecessors, (225), 9 states have call successors, (175), 5 states have call predecessors, (175), 10 states have return successors, (177), 9 states have call predecessors, (177), 9 states have call successors, (177) Word has length 422 [2024-11-22 11:44:34,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 11:44:34,900 INFO L225 Difference]: With dead ends: 5835 [2024-11-22 11:44:34,901 INFO L226 Difference]: Without dead ends: 4417 [2024-11-22 11:44:34,914 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 922 GetRequests, 837 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2290 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1478, Invalid=6004, Unknown=0, NotChecked=0, Total=7482 [2024-11-22 11:44:34,915 INFO L432 NwaCegarLoop]: 550 mSDtfsCounter, 1070 mSDsluCounter, 2495 mSDsCounter, 0 mSdLazyCounter, 3650 mSolverCounterSat, 746 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1080 SdHoareTripleChecker+Valid, 3045 SdHoareTripleChecker+Invalid, 4396 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 746 IncrementalHoareTripleChecker+Valid, 3650 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2024-11-22 11:44:34,915 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1080 Valid, 3045 Invalid, 4396 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [746 Valid, 3650 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2024-11-22 11:44:34,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4417 states. [2024-11-22 11:44:35,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4417 to 2211. [2024-11-22 11:44:35,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2211 states, 1824 states have (on average 1.4232456140350878) internal successors, (2596), 1825 states have internal predecessors, (2596), 301 states have call successors, (301), 85 states have call predecessors, (301), 85 states have return successors, (301), 300 states have call predecessors, (301), 301 states have call successors, (301) [2024-11-22 11:44:35,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2211 states to 2211 states and 3198 transitions. [2024-11-22 11:44:35,222 INFO L78 Accepts]: Start accepts. Automaton has 2211 states and 3198 transitions. Word has length 422 [2024-11-22 11:44:35,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 11:44:35,222 INFO L471 AbstractCegarLoop]: Abstraction has 2211 states and 3198 transitions. [2024-11-22 11:44:35,222 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 24 states have (on average 9.375) internal successors, (225), 23 states have internal predecessors, (225), 9 states have call successors, (175), 5 states have call predecessors, (175), 10 states have return successors, (177), 9 states have call predecessors, (177), 9 states have call successors, (177) [2024-11-22 11:44:35,222 INFO L276 IsEmpty]: Start isEmpty. Operand 2211 states and 3198 transitions. [2024-11-22 11:44:35,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 423 [2024-11-22 11:44:35,225 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 11:44:35,225 INFO L215 NwaCegarLoop]: trace histogram [65, 65, 65, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 11:44:35,236 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-22 11:44:35,425 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 11:44:35,426 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 11:44:35,426 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 11:44:35,426 INFO L85 PathProgramCache]: Analyzing trace with hash -2067213075, now seen corresponding path program 1 times [2024-11-22 11:44:35,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 11:44:35,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [247094381] [2024-11-22 11:44:35,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:44:35,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 11:44:35,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-22 11:44:35,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [445630556] [2024-11-22 11:44:35,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:44:35,771 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 11:44:35,771 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 11:44:35,773 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 11:44:35,774 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-22 11:44:36,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:44:36,019 INFO L255 TraceCheckSpWp]: Trace formula consists of 952 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-22 11:44:36,025 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 11:44:37,466 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 6272 proven. 390 refuted. 0 times theorem prover too weak. 1658 trivial. 0 not checked. [2024-11-22 11:44:37,466 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 11:44:38,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 11:44:38,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [247094381] [2024-11-22 11:44:38,103 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-22 11:44:38,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [445630556] [2024-11-22 11:44:38,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [445630556] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 11:44:38,103 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-22 11:44:38,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2024-11-22 11:44:38,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59895105] [2024-11-22 11:44:38,103 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-22 11:44:38,104 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-22 11:44:38,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 11:44:38,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-22 11:44:38,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=256, Unknown=0, NotChecked=0, Total=342 [2024-11-22 11:44:38,105 INFO L87 Difference]: Start difference. First operand 2211 states and 3198 transitions. Second operand has 16 states, 16 states have (on average 7.75) internal successors, (124), 15 states have internal predecessors, (124), 6 states have call successors, (65), 6 states have call predecessors, (65), 9 states have return successors, (65), 6 states have call predecessors, (65), 6 states have call successors, (65) [2024-11-22 11:44:39,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 11:44:39,102 INFO L93 Difference]: Finished difference Result 4415 states and 6346 transitions. [2024-11-22 11:44:39,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-22 11:44:39,103 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 7.75) internal successors, (124), 15 states have internal predecessors, (124), 6 states have call successors, (65), 6 states have call predecessors, (65), 9 states have return successors, (65), 6 states have call predecessors, (65), 6 states have call successors, (65) Word has length 422 [2024-11-22 11:44:39,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 11:44:39,109 INFO L225 Difference]: With dead ends: 4415 [2024-11-22 11:44:39,109 INFO L226 Difference]: Without dead ends: 2325 [2024-11-22 11:44:39,111 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 578 GetRequests, 556 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=158, Invalid=394, Unknown=0, NotChecked=0, Total=552 [2024-11-22 11:44:39,112 INFO L432 NwaCegarLoop]: 200 mSDtfsCounter, 310 mSDsluCounter, 809 mSDsCounter, 0 mSdLazyCounter, 1177 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 332 SdHoareTripleChecker+Valid, 1009 SdHoareTripleChecker+Invalid, 1232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 1177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-22 11:44:39,112 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [332 Valid, 1009 Invalid, 1232 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 1177 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-22 11:44:39,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2325 states. [2024-11-22 11:44:39,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2325 to 2271. [2024-11-22 11:44:39,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2271 states, 1869 states have (on average 1.3552701979668271) internal successors, (2533), 1870 states have internal predecessors, (2533), 301 states have call successors, (301), 100 states have call predecessors, (301), 100 states have return successors, (301), 300 states have call predecessors, (301), 301 states have call successors, (301) [2024-11-22 11:44:39,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2271 states to 2271 states and 3135 transitions. [2024-11-22 11:44:39,373 INFO L78 Accepts]: Start accepts. Automaton has 2271 states and 3135 transitions. Word has length 422 [2024-11-22 11:44:39,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 11:44:39,373 INFO L471 AbstractCegarLoop]: Abstraction has 2271 states and 3135 transitions. [2024-11-22 11:44:39,373 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 7.75) internal successors, (124), 15 states have internal predecessors, (124), 6 states have call successors, (65), 6 states have call predecessors, (65), 9 states have return successors, (65), 6 states have call predecessors, (65), 6 states have call successors, (65) [2024-11-22 11:44:39,374 INFO L276 IsEmpty]: Start isEmpty. Operand 2271 states and 3135 transitions. [2024-11-22 11:44:39,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 423 [2024-11-22 11:44:39,376 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 11:44:39,376 INFO L215 NwaCegarLoop]: trace histogram [65, 65, 65, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 11:44:39,387 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-22 11:44:39,580 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 11:44:39,582 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 11:44:39,582 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 11:44:39,582 INFO L85 PathProgramCache]: Analyzing trace with hash -1623312401, now seen corresponding path program 1 times [2024-11-22 11:44:39,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 11:44:39,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284555997] [2024-11-22 11:44:39,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:44:39,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 11:44:39,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-22 11:44:39,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1701303294] [2024-11-22 11:44:39,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:44:39,940 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 11:44:39,940 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 11:44:39,942 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 11:44:39,944 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-22 11:44:40,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:44:40,201 INFO L255 TraceCheckSpWp]: Trace formula consists of 952 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-22 11:44:40,206 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 11:44:41,267 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 5803 proven. 282 refuted. 0 times theorem prover too weak. 2235 trivial. 0 not checked. [2024-11-22 11:44:41,268 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 11:44:45,612 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (mod c_~var_1_68~0 65536))) (and (forall ((v_~var_1_38~0_16 Int)) (or (< c_~var_1_25~0 v_~var_1_38~0_16) (not (= (mod v_~var_1_38~0_16 c_~var_1_31~0) 0)) (< (div v_~var_1_38~0_16 c_~var_1_31~0) (+ .cse0 1)))) (or (and (forall ((v_~var_1_38~0_16 Int)) (or (= (mod v_~var_1_38~0_16 c_~var_1_31~0) 0) (< 0 (+ v_~var_1_38~0_16 1)) (< c_~var_1_25~0 v_~var_1_38~0_16) (< (div v_~var_1_38~0_16 c_~var_1_31~0) .cse0))) (forall ((v_~var_1_38~0_16 Int)) (let ((.cse1 (div v_~var_1_38~0_16 c_~var_1_31~0))) (or (< c_~var_1_25~0 v_~var_1_38~0_16) (< .cse1 .cse0) (= .cse0 .cse1))))) (< c_~var_1_31~0 0)) (forall ((v_~var_1_38~0_16 Int)) (or (< c_~var_1_25~0 v_~var_1_38~0_16) (< (div v_~var_1_38~0_16 c_~var_1_31~0) (+ 2 .cse0)))))) is different from false [2024-11-22 11:44:50,762 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (mod c_~var_1_55~0 65536))) (and (forall ((v_~var_1_38~0_16 Int)) (or (< (div v_~var_1_38~0_16 c_~var_1_31~0) (+ .cse0 1)) (< c_~var_1_25~0 v_~var_1_38~0_16) (not (= (mod v_~var_1_38~0_16 c_~var_1_31~0) 0)))) (or (and (forall ((v_~var_1_38~0_16 Int)) (or (= (mod v_~var_1_38~0_16 c_~var_1_31~0) 0) (< 0 (+ v_~var_1_38~0_16 1)) (< c_~var_1_25~0 v_~var_1_38~0_16) (< (div v_~var_1_38~0_16 c_~var_1_31~0) .cse0))) (forall ((v_~var_1_38~0_16 Int)) (let ((.cse1 (div v_~var_1_38~0_16 c_~var_1_31~0))) (or (< c_~var_1_25~0 v_~var_1_38~0_16) (= .cse0 .cse1) (< .cse1 .cse0))))) (< c_~var_1_31~0 0)) (forall ((v_~var_1_38~0_16 Int)) (or (< (div v_~var_1_38~0_16 c_~var_1_31~0) (+ .cse0 2)) (< c_~var_1_25~0 v_~var_1_38~0_16))))) is different from false [2024-11-22 11:44:51,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 11:44:51,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284555997] [2024-11-22 11:44:51,714 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-22 11:44:51,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1701303294] [2024-11-22 11:44:51,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1701303294] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 11:44:51,714 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-22 11:44:51,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2024-11-22 11:44:51,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669414568] [2024-11-22 11:44:51,715 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-22 11:44:51,715 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-22 11:44:51,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 11:44:51,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-22 11:44:51,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=210, Unknown=2, NotChecked=62, Total=342 [2024-11-22 11:44:51,716 INFO L87 Difference]: Start difference. First operand 2271 states and 3135 transitions. Second operand has 16 states, 16 states have (on average 7.5625) internal successors, (121), 15 states have internal predecessors, (121), 5 states have call successors, (65), 5 states have call predecessors, (65), 8 states have return successors, (65), 5 states have call predecessors, (65), 5 states have call successors, (65) [2024-11-22 11:44:54,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 11:44:54,297 INFO L93 Difference]: Finished difference Result 5233 states and 7166 transitions. [2024-11-22 11:44:54,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-11-22 11:44:54,298 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 7.5625) internal successors, (121), 15 states have internal predecessors, (121), 5 states have call successors, (65), 5 states have call predecessors, (65), 8 states have return successors, (65), 5 states have call predecessors, (65), 5 states have call successors, (65) Word has length 422 [2024-11-22 11:44:54,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 11:44:54,306 INFO L225 Difference]: With dead ends: 5233 [2024-11-22 11:44:54,306 INFO L226 Difference]: Without dead ends: 3095 [2024-11-22 11:44:54,309 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 498 GetRequests, 464 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 8.7s TimeCoverageRelationStatistics Valid=295, Invalid=833, Unknown=2, NotChecked=130, Total=1260 [2024-11-22 11:44:54,310 INFO L432 NwaCegarLoop]: 257 mSDtfsCounter, 627 mSDsluCounter, 1060 mSDsCounter, 0 mSdLazyCounter, 1621 mSolverCounterSat, 203 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 649 SdHoareTripleChecker+Valid, 1317 SdHoareTripleChecker+Invalid, 1824 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 203 IncrementalHoareTripleChecker+Valid, 1621 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-22 11:44:54,311 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [649 Valid, 1317 Invalid, 1824 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [203 Valid, 1621 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-22 11:44:54,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3095 states.