./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-100_file-9.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_fillercode_fillercodesize_ps-cn-100_file-9.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 7f10ee1d7d1bdb6c6002682d2d4e78828136c4b0dcc0a6af4ec817ebb399ac20 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-803cd42-m [2024-11-22 07:07:02,098 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-22 07:07:02,172 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-22 07:07:02,178 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-22 07:07:02,179 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-22 07:07:02,205 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-22 07:07:02,206 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-22 07:07:02,207 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-22 07:07:02,207 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-22 07:07:02,208 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-22 07:07:02,209 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-22 07:07:02,209 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-22 07:07:02,210 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-22 07:07:02,210 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-22 07:07:02,211 INFO L153 SettingsManager]: * Use SBE=true [2024-11-22 07:07:02,212 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-22 07:07:02,212 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-22 07:07:02,212 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-22 07:07:02,212 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-22 07:07:02,212 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-22 07:07:02,212 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-22 07:07:02,213 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-22 07:07:02,213 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-22 07:07:02,213 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-22 07:07:02,214 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-22 07:07:02,214 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-22 07:07:02,214 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-22 07:07:02,214 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-22 07:07:02,214 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-22 07:07:02,215 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-22 07:07:02,215 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-22 07:07:02,215 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-22 07:07:02,215 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 07:07:02,215 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-22 07:07:02,215 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-22 07:07:02,215 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-22 07:07:02,216 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-22 07:07:02,216 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-22 07:07:02,216 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-22 07:07:02,216 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-22 07:07:02,216 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-22 07:07:02,217 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-22 07:07:02,217 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7f10ee1d7d1bdb6c6002682d2d4e78828136c4b0dcc0a6af4ec817ebb399ac20 [2024-11-22 07:07:02,440 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-22 07:07:02,465 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-22 07:07:02,467 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-22 07:07:02,468 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-22 07:07:02,469 INFO L274 PluginConnector]: CDTParser initialized [2024-11-22 07:07:02,470 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-100_file-9.i [2024-11-22 07:07:03,727 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-22 07:07:03,928 INFO L384 CDTParser]: Found 1 translation units. [2024-11-22 07:07:03,929 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-100_file-9.i [2024-11-22 07:07:03,939 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/92f9657f3/645dd163e8554f0db40b068b703110be/FLAGc7c73240c [2024-11-22 07:07:03,955 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/92f9657f3/645dd163e8554f0db40b068b703110be [2024-11-22 07:07:03,957 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-22 07:07:03,959 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-22 07:07:03,961 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-22 07:07:03,962 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-22 07:07:03,966 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-22 07:07:03,967 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 07:07:03" (1/1) ... [2024-11-22 07:07:03,967 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e50253c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 07:07:03, skipping insertion in model container [2024-11-22 07:07:03,968 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 07:07:03" (1/1) ... [2024-11-22 07:07:04,000 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-22 07:07:04,174 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_fillercode_fillercodesize_ps-cn-100_file-9.i[915,928] [2024-11-22 07:07:04,294 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 07:07:04,306 INFO L200 MainTranslator]: Completed pre-run [2024-11-22 07:07:04,316 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_fillercode_fillercodesize_ps-cn-100_file-9.i[915,928] [2024-11-22 07:07:04,349 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 07:07:04,368 INFO L204 MainTranslator]: Completed translation [2024-11-22 07:07:04,369 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 07:07:04 WrapperNode [2024-11-22 07:07:04,369 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-22 07:07:04,370 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-22 07:07:04,371 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-22 07:07:04,371 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-22 07:07:04,377 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 07:07:04" (1/1) ... [2024-11-22 07:07:04,388 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 07:07:04" (1/1) ... [2024-11-22 07:07:04,435 INFO L138 Inliner]: procedures = 26, calls = 53, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 317 [2024-11-22 07:07:04,436 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-22 07:07:04,436 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-22 07:07:04,436 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-22 07:07:04,440 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-22 07:07:04,449 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 07:07:04" (1/1) ... [2024-11-22 07:07:04,449 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 07:07:04" (1/1) ... [2024-11-22 07:07:04,453 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 07:07:04" (1/1) ... [2024-11-22 07:07:04,468 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 07:07:04,468 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 07:07:04" (1/1) ... [2024-11-22 07:07:04,469 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 07:07:04" (1/1) ... [2024-11-22 07:07:04,478 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 07:07:04" (1/1) ... [2024-11-22 07:07:04,482 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 07:07:04" (1/1) ... [2024-11-22 07:07:04,487 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 07:07:04" (1/1) ... [2024-11-22 07:07:04,493 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 07:07:04" (1/1) ... [2024-11-22 07:07:04,500 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-22 07:07:04,501 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-22 07:07:04,501 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-22 07:07:04,501 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-22 07:07:04,502 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 07:07:04" (1/1) ... [2024-11-22 07:07:04,514 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 07:07:04,523 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 07:07:04,538 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 07:07:04,544 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 07:07:04,574 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-22 07:07:04,574 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-22 07:07:04,574 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-22 07:07:04,574 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-22 07:07:04,574 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-22 07:07:04,574 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-22 07:07:04,666 INFO L238 CfgBuilder]: Building ICFG [2024-11-22 07:07:04,668 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-22 07:07:05,146 INFO L? ?]: Removed 24 outVars from TransFormulas that were not future-live. [2024-11-22 07:07:05,146 INFO L287 CfgBuilder]: Performing block encoding [2024-11-22 07:07:05,167 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-22 07:07:05,167 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-22 07:07:05,167 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 07:07:05 BoogieIcfgContainer [2024-11-22 07:07:05,168 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-22 07:07:05,169 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-22 07:07:05,170 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-22 07:07:05,173 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-22 07:07:05,173 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 07:07:03" (1/3) ... [2024-11-22 07:07:05,174 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@516b5b4b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 07:07:05, skipping insertion in model container [2024-11-22 07:07:05,174 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 07:07:04" (2/3) ... [2024-11-22 07:07:05,175 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@516b5b4b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 07:07:05, skipping insertion in model container [2024-11-22 07:07:05,175 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 07:07:05" (3/3) ... [2024-11-22 07:07:05,176 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-100_file-9.i [2024-11-22 07:07:05,191 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-22 07:07:05,192 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-22 07:07:05,246 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-22 07:07:05,252 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;@61ce13d7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-22 07:07:05,252 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-22 07:07:05,257 INFO L276 IsEmpty]: Start isEmpty. Operand has 136 states, 93 states have (on average 1.4946236559139785) internal successors, (139), 94 states have internal predecessors, (139), 40 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2024-11-22 07:07:05,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2024-11-22 07:07:05,275 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 07:07:05,276 INFO L215 NwaCegarLoop]: trace histogram [40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:07:05,276 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 07:07:05,281 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 07:07:05,281 INFO L85 PathProgramCache]: Analyzing trace with hash 1799679522, now seen corresponding path program 1 times [2024-11-22 07:07:05,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 07:07:05,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585404276] [2024-11-22 07:07:05,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 07:07:05,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 07:07:05,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 07:07:05,661 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 3042 trivial. 0 not checked. [2024-11-22 07:07:05,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 07:07:05,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585404276] [2024-11-22 07:07:05,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1585404276] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 07:07:05,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [896239063] [2024-11-22 07:07:05,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 07:07:05,664 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 07:07:05,665 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 07:07:05,667 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 07:07:05,669 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 07:07:05,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 07:07:05,880 INFO L255 TraceCheckSpWp]: Trace formula consists of 599 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-22 07:07:05,893 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 07:07:05,926 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 78 proven. 0 refuted. 0 times theorem prover too weak. 3042 trivial. 0 not checked. [2024-11-22 07:07:05,930 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 07:07:05,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [896239063] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 07:07:05,931 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 07:07:05,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-22 07:07:05,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053178930] [2024-11-22 07:07:05,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 07:07:05,939 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-22 07:07:05,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 07:07:05,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-22 07:07:05,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-22 07:07:05,960 INFO L87 Difference]: Start difference. First operand has 136 states, 93 states have (on average 1.4946236559139785) internal successors, (139), 94 states have internal predecessors, (139), 40 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) Second operand has 2 states, 2 states have (on average 32.5) internal successors, (65), 2 states have internal predecessors, (65), 2 states have call successors, (40), 2 states have call predecessors, (40), 1 states have return successors, (40), 1 states have call predecessors, (40), 2 states have call successors, (40) [2024-11-22 07:07:05,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 07:07:05,988 INFO L93 Difference]: Finished difference Result 265 states and 472 transitions. [2024-11-22 07:07:05,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-22 07:07:05,992 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 32.5) internal successors, (65), 2 states have internal predecessors, (65), 2 states have call successors, (40), 2 states have call predecessors, (40), 1 states have return successors, (40), 1 states have call predecessors, (40), 2 states have call successors, (40) Word has length 260 [2024-11-22 07:07:05,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 07:07:05,998 INFO L225 Difference]: With dead ends: 265 [2024-11-22 07:07:05,998 INFO L226 Difference]: Without dead ends: 132 [2024-11-22 07:07:06,002 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 261 GetRequests, 261 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 07:07:06,004 INFO L432 NwaCegarLoop]: 211 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, 211 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 07:07:06,005 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 211 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 07:07:06,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2024-11-22 07:07:06,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 132. [2024-11-22 07:07:06,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 90 states have (on average 1.4555555555555555) internal successors, (131), 90 states have internal predecessors, (131), 40 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2024-11-22 07:07:06,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 211 transitions. [2024-11-22 07:07:06,055 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 211 transitions. Word has length 260 [2024-11-22 07:07:06,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 07:07:06,056 INFO L471 AbstractCegarLoop]: Abstraction has 132 states and 211 transitions. [2024-11-22 07:07:06,056 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 32.5) internal successors, (65), 2 states have internal predecessors, (65), 2 states have call successors, (40), 2 states have call predecessors, (40), 1 states have return successors, (40), 1 states have call predecessors, (40), 2 states have call successors, (40) [2024-11-22 07:07:06,060 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 211 transitions. [2024-11-22 07:07:06,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2024-11-22 07:07:06,066 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 07:07:06,066 INFO L215 NwaCegarLoop]: trace histogram [40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:07:06,076 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 07:07:06,267 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 07:07:06,268 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 07:07:06,268 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 07:07:06,268 INFO L85 PathProgramCache]: Analyzing trace with hash 607007898, now seen corresponding path program 1 times [2024-11-22 07:07:06,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 07:07:06,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710756226] [2024-11-22 07:07:06,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 07:07:06,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 07:07:06,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 07:07:06,533 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3120 trivial. 0 not checked. [2024-11-22 07:07:06,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 07:07:06,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1710756226] [2024-11-22 07:07:06,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1710756226] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 07:07:06,535 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 07:07:06,536 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 07:07:06,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690845084] [2024-11-22 07:07:06,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 07:07:06,538 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 07:07:06,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 07:07:06,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 07:07:06,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 07:07:06,540 INFO L87 Difference]: Start difference. First operand 132 states and 211 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 1 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) [2024-11-22 07:07:06,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 07:07:06,609 INFO L93 Difference]: Finished difference Result 262 states and 421 transitions. [2024-11-22 07:07:06,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 07:07:06,610 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 1 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) Word has length 260 [2024-11-22 07:07:06,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 07:07:06,612 INFO L225 Difference]: With dead ends: 262 [2024-11-22 07:07:06,612 INFO L226 Difference]: Without dead ends: 133 [2024-11-22 07:07:06,613 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 07:07:06,618 INFO L432 NwaCegarLoop]: 210 mSDtfsCounter, 0 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 415 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 07:07:06,618 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 415 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 07:07:06,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2024-11-22 07:07:06,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 133. [2024-11-22 07:07:06,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 91 states have (on average 1.4505494505494505) internal successors, (132), 91 states have internal predecessors, (132), 40 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2024-11-22 07:07:06,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 212 transitions. [2024-11-22 07:07:06,633 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 212 transitions. Word has length 260 [2024-11-22 07:07:06,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 07:07:06,635 INFO L471 AbstractCegarLoop]: Abstraction has 133 states and 212 transitions. [2024-11-22 07:07:06,635 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 1 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) [2024-11-22 07:07:06,635 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 212 transitions. [2024-11-22 07:07:06,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2024-11-22 07:07:06,638 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 07:07:06,639 INFO L215 NwaCegarLoop]: trace histogram [40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:07:06,639 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-22 07:07:06,639 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 07:07:06,639 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 07:07:06,640 INFO L85 PathProgramCache]: Analyzing trace with hash 679172015, now seen corresponding path program 1 times [2024-11-22 07:07:06,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 07:07:06,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652373268] [2024-11-22 07:07:06,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 07:07:06,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 07:07:06,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 07:07:09,000 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 33 proven. 84 refuted. 0 times theorem prover too weak. 3003 trivial. 0 not checked. [2024-11-22 07:07:09,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 07:07:09,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [652373268] [2024-11-22 07:07:09,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [652373268] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 07:07:09,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1310261577] [2024-11-22 07:07:09,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 07:07:09,002 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 07:07:09,003 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 07:07:09,006 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 07:07:09,007 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 07:07:09,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 07:07:09,161 INFO L255 TraceCheckSpWp]: Trace formula consists of 599 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-22 07:07:09,175 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 07:07:11,058 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 813 proven. 402 refuted. 0 times theorem prover too weak. 1905 trivial. 0 not checked. [2024-11-22 07:07:11,059 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 07:07:21,233 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3120 trivial. 0 not checked. [2024-11-22 07:07:21,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1310261577] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-22 07:07:21,235 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-22 07:07:21,236 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10, 20] total 30 [2024-11-22 07:07:21,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894794520] [2024-11-22 07:07:21,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 07:07:21,237 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-22 07:07:21,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 07:07:21,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-22 07:07:21,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=712, Unknown=2, NotChecked=0, Total=870 [2024-11-22 07:07:21,239 INFO L87 Difference]: Start difference. First operand 133 states and 212 transitions. Second operand has 8 states, 8 states have (on average 8.0) internal successors, (64), 8 states have internal predecessors, (64), 1 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) [2024-11-22 07:07:28,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 07:07:28,906 INFO L93 Difference]: Finished difference Result 422 states and 651 transitions. [2024-11-22 07:07:28,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-22 07:07:28,907 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.0) internal successors, (64), 8 states have internal predecessors, (64), 1 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) Word has length 261 [2024-11-22 07:07:28,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 07:07:28,912 INFO L225 Difference]: With dead ends: 422 [2024-11-22 07:07:28,914 INFO L226 Difference]: Without dead ends: 292 [2024-11-22 07:07:28,916 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 537 GetRequests, 505 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 261 ImplicationChecksByTransitivity, 16.4s TimeCoverageRelationStatistics Valid=197, Invalid=922, Unknown=3, NotChecked=0, Total=1122 [2024-11-22 07:07:28,919 INFO L432 NwaCegarLoop]: 183 mSDtfsCounter, 394 mSDsluCounter, 749 mSDsCounter, 0 mSdLazyCounter, 291 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 394 SdHoareTripleChecker+Valid, 932 SdHoareTripleChecker+Invalid, 304 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 291 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-22 07:07:28,919 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [394 Valid, 932 Invalid, 304 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 291 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-22 07:07:28,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2024-11-22 07:07:28,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 157. [2024-11-22 07:07:28,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 115 states have (on average 1.4695652173913043) internal successors, (169), 115 states have internal predecessors, (169), 40 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2024-11-22 07:07:28,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 249 transitions. [2024-11-22 07:07:28,939 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 249 transitions. Word has length 261 [2024-11-22 07:07:28,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 07:07:28,940 INFO L471 AbstractCegarLoop]: Abstraction has 157 states and 249 transitions. [2024-11-22 07:07:28,940 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.0) internal successors, (64), 8 states have internal predecessors, (64), 1 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) [2024-11-22 07:07:28,940 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 249 transitions. [2024-11-22 07:07:28,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2024-11-22 07:07:28,943 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 07:07:28,943 INFO L215 NwaCegarLoop]: trace histogram [40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:07:28,952 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 07:07:29,148 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,SelfDestructingSolverStorable2 [2024-11-22 07:07:29,149 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 07:07:29,149 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 07:07:29,149 INFO L85 PathProgramCache]: Analyzing trace with hash 330120582, now seen corresponding path program 1 times [2024-11-22 07:07:29,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 07:07:29,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942450448] [2024-11-22 07:07:29,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 07:07:29,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 07:07:29,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 07:07:31,340 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 33 proven. 84 refuted. 0 times theorem prover too weak. 3003 trivial. 0 not checked. [2024-11-22 07:07:31,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 07:07:31,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [942450448] [2024-11-22 07:07:31,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [942450448] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 07:07:31,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1704475041] [2024-11-22 07:07:31,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 07:07:31,341 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 07:07:31,341 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 07:07:31,344 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 07:07:31,347 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 07:07:31,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 07:07:31,479 INFO L255 TraceCheckSpWp]: Trace formula consists of 597 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-22 07:07:31,486 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 07:07:31,718 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3120 trivial. 0 not checked. [2024-11-22 07:07:31,719 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 07:07:31,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1704475041] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 07:07:31,719 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 07:07:31,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 13 [2024-11-22 07:07:31,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257465571] [2024-11-22 07:07:31,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 07:07:31,720 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-22 07:07:31,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 07:07:31,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-22 07:07:31,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-11-22 07:07:31,723 INFO L87 Difference]: Start difference. First operand 157 states and 249 transitions. Second operand has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 1 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) [2024-11-22 07:07:31,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 07:07:31,935 INFO L93 Difference]: Finished difference Result 397 states and 617 transitions. [2024-11-22 07:07:31,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-22 07:07:31,936 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 1 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) Word has length 261 [2024-11-22 07:07:31,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 07:07:31,938 INFO L225 Difference]: With dead ends: 397 [2024-11-22 07:07:31,938 INFO L226 Difference]: Without dead ends: 243 [2024-11-22 07:07:31,939 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 273 GetRequests, 261 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2024-11-22 07:07:31,940 INFO L432 NwaCegarLoop]: 201 mSDtfsCounter, 109 mSDsluCounter, 604 mSDsCounter, 0 mSdLazyCounter, 237 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 805 SdHoareTripleChecker+Invalid, 237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-22 07:07:31,941 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 805 Invalid, 237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 237 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-22 07:07:31,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2024-11-22 07:07:31,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 205. [2024-11-22 07:07:31,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205 states, 157 states have (on average 1.4585987261146496) internal successors, (229), 158 states have internal predecessors, (229), 45 states have call successors, (45), 2 states have call predecessors, (45), 2 states have return successors, (45), 44 states have call predecessors, (45), 45 states have call successors, (45) [2024-11-22 07:07:31,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 319 transitions. [2024-11-22 07:07:31,962 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 319 transitions. Word has length 261 [2024-11-22 07:07:31,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 07:07:31,965 INFO L471 AbstractCegarLoop]: Abstraction has 205 states and 319 transitions. [2024-11-22 07:07:31,965 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 1 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) [2024-11-22 07:07:31,965 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 319 transitions. [2024-11-22 07:07:31,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2024-11-22 07:07:31,967 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 07:07:31,968 INFO L215 NwaCegarLoop]: trace histogram [40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:07:31,977 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 07:07:32,168 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 07:07:32,168 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 07:07:32,169 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 07:07:32,169 INFO L85 PathProgramCache]: Analyzing trace with hash -1926851539, now seen corresponding path program 1 times [2024-11-22 07:07:32,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 07:07:32,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596639984] [2024-11-22 07:07:32,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 07:07:32,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 07:07:32,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 07:07:34,618 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 33 proven. 84 refuted. 0 times theorem prover too weak. 3003 trivial. 0 not checked. [2024-11-22 07:07:34,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 07:07:34,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596639984] [2024-11-22 07:07:34,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [596639984] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 07:07:34,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [761569209] [2024-11-22 07:07:34,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 07:07:34,619 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 07:07:34,619 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 07:07:34,622 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 07:07:34,623 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 07:07:34,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 07:07:34,750 INFO L255 TraceCheckSpWp]: Trace formula consists of 599 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-22 07:07:34,755 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 07:07:35,322 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 1359 proven. 81 refuted. 0 times theorem prover too weak. 1680 trivial. 0 not checked. [2024-11-22 07:07:35,322 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 07:07:36,353 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3120 trivial. 0 not checked. [2024-11-22 07:07:36,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [761569209] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-22 07:07:36,353 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-22 07:07:36,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10, 11] total 21 [2024-11-22 07:07:36,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003158780] [2024-11-22 07:07:36,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 07:07:36,354 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-22 07:07:36,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 07:07:36,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-22 07:07:36,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=333, Unknown=0, NotChecked=0, Total=420 [2024-11-22 07:07:36,355 INFO L87 Difference]: Start difference. First operand 205 states and 319 transitions. Second operand has 8 states, 8 states have (on average 8.0) internal successors, (64), 8 states have internal predecessors, (64), 1 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) [2024-11-22 07:07:38,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 07:07:38,789 INFO L93 Difference]: Finished difference Result 529 states and 804 transitions. [2024-11-22 07:07:38,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-22 07:07:38,793 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.0) internal successors, (64), 8 states have internal predecessors, (64), 1 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) Word has length 261 [2024-11-22 07:07:38,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 07:07:38,797 INFO L225 Difference]: With dead ends: 529 [2024-11-22 07:07:38,797 INFO L226 Difference]: Without dead ends: 327 [2024-11-22 07:07:38,798 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 539 GetRequests, 516 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=129, Invalid=471, Unknown=0, NotChecked=0, Total=600 [2024-11-22 07:07:38,798 INFO L432 NwaCegarLoop]: 240 mSDtfsCounter, 284 mSDsluCounter, 1010 mSDsCounter, 0 mSdLazyCounter, 386 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 284 SdHoareTripleChecker+Valid, 1250 SdHoareTripleChecker+Invalid, 399 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 386 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-11-22 07:07:38,799 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [284 Valid, 1250 Invalid, 399 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 386 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-11-22 07:07:38,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2024-11-22 07:07:38,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 228. [2024-11-22 07:07:38,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 180 states have (on average 1.4777777777777779) internal successors, (266), 181 states have internal predecessors, (266), 45 states have call successors, (45), 2 states have call predecessors, (45), 2 states have return successors, (45), 44 states have call predecessors, (45), 45 states have call successors, (45) [2024-11-22 07:07:38,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 356 transitions. [2024-11-22 07:07:38,817 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 356 transitions. Word has length 261 [2024-11-22 07:07:38,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 07:07:38,818 INFO L471 AbstractCegarLoop]: Abstraction has 228 states and 356 transitions. [2024-11-22 07:07:38,818 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.0) internal successors, (64), 8 states have internal predecessors, (64), 1 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) [2024-11-22 07:07:38,818 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 356 transitions. [2024-11-22 07:07:38,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2024-11-22 07:07:38,820 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 07:07:38,821 INFO L215 NwaCegarLoop]: trace histogram [40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:07:38,831 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 07:07:39,024 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 07:07:39,025 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 07:07:39,025 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 07:07:39,025 INFO L85 PathProgramCache]: Analyzing trace with hash 2019064324, now seen corresponding path program 1 times [2024-11-22 07:07:39,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 07:07:39,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755583751] [2024-11-22 07:07:39,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 07:07:39,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 07:07:39,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 07:07:41,060 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 33 proven. 84 refuted. 0 times theorem prover too weak. 3003 trivial. 0 not checked. [2024-11-22 07:07:41,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 07:07:41,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755583751] [2024-11-22 07:07:41,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1755583751] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 07:07:41,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2074705873] [2024-11-22 07:07:41,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 07:07:41,061 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 07:07:41,061 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 07:07:41,063 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 07:07:41,064 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 07:07:41,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 07:07:41,183 INFO L255 TraceCheckSpWp]: Trace formula consists of 597 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-22 07:07:41,188 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 07:07:41,724 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 1359 proven. 81 refuted. 0 times theorem prover too weak. 1680 trivial. 0 not checked. [2024-11-22 07:07:41,725 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 07:07:42,590 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3120 trivial. 0 not checked. [2024-11-22 07:07:42,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2074705873] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-22 07:07:42,591 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-22 07:07:42,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9, 11] total 20 [2024-11-22 07:07:42,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021265159] [2024-11-22 07:07:42,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 07:07:42,592 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-22 07:07:42,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 07:07:42,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-22 07:07:42,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=299, Unknown=0, NotChecked=0, Total=380 [2024-11-22 07:07:42,593 INFO L87 Difference]: Start difference. First operand 228 states and 356 transitions. Second operand has 8 states, 8 states have (on average 8.0) internal successors, (64), 8 states have internal predecessors, (64), 1 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) [2024-11-22 07:07:44,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 07:07:44,059 INFO L93 Difference]: Finished difference Result 567 states and 859 transitions. [2024-11-22 07:07:44,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-22 07:07:44,060 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.0) internal successors, (64), 8 states have internal predecessors, (64), 1 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) Word has length 261 [2024-11-22 07:07:44,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 07:07:44,063 INFO L225 Difference]: With dead ends: 567 [2024-11-22 07:07:44,064 INFO L226 Difference]: Without dead ends: 342 [2024-11-22 07:07:44,064 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 538 GetRequests, 516 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=123, Invalid=429, Unknown=0, NotChecked=0, Total=552 [2024-11-22 07:07:44,065 INFO L432 NwaCegarLoop]: 250 mSDtfsCounter, 287 mSDsluCounter, 826 mSDsCounter, 0 mSdLazyCounter, 309 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 287 SdHoareTripleChecker+Valid, 1076 SdHoareTripleChecker+Invalid, 318 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 309 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-22 07:07:44,065 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [287 Valid, 1076 Invalid, 318 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 309 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-22 07:07:44,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 342 states. [2024-11-22 07:07:44,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 342 to 207. [2024-11-22 07:07:44,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 159 states have (on average 1.4591194968553458) internal successors, (232), 160 states have internal predecessors, (232), 45 states have call successors, (45), 2 states have call predecessors, (45), 2 states have return successors, (45), 44 states have call predecessors, (45), 45 states have call successors, (45) [2024-11-22 07:07:44,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 322 transitions. [2024-11-22 07:07:44,079 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 322 transitions. Word has length 261 [2024-11-22 07:07:44,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 07:07:44,079 INFO L471 AbstractCegarLoop]: Abstraction has 207 states and 322 transitions. [2024-11-22 07:07:44,080 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.0) internal successors, (64), 8 states have internal predecessors, (64), 1 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) [2024-11-22 07:07:44,080 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 322 transitions. [2024-11-22 07:07:44,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2024-11-22 07:07:44,081 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 07:07:44,081 INFO L215 NwaCegarLoop]: trace histogram [40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:07:44,089 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-22 07:07:44,281 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 07:07:44,282 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 07:07:44,282 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 07:07:44,282 INFO L85 PathProgramCache]: Analyzing trace with hash 1101873841, now seen corresponding path program 1 times [2024-11-22 07:07:44,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 07:07:44,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761456179] [2024-11-22 07:07:44,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 07:07:44,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 07:07:44,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 07:07:45,343 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 33 proven. 84 refuted. 0 times theorem prover too weak. 3003 trivial. 0 not checked. [2024-11-22 07:07:45,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 07:07:45,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [761456179] [2024-11-22 07:07:45,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [761456179] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 07:07:45,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [792452170] [2024-11-22 07:07:45,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 07:07:45,345 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 07:07:45,345 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 07:07:45,347 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 07:07:45,348 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 07:07:45,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 07:07:45,455 INFO L255 TraceCheckSpWp]: Trace formula consists of 597 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-11-22 07:07:45,460 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 07:07:46,882 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 813 proven. 402 refuted. 0 times theorem prover too weak. 1905 trivial. 0 not checked. [2024-11-22 07:07:46,883 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 07:07:48,043 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3120 trivial. 0 not checked. [2024-11-22 07:07:48,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [792452170] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-22 07:07:48,044 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-22 07:07:48,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10, 20] total 30 [2024-11-22 07:07:48,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936828029] [2024-11-22 07:07:48,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 07:07:48,044 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-22 07:07:48,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 07:07:48,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-22 07:07:48,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=706, Unknown=0, NotChecked=0, Total=870 [2024-11-22 07:07:48,045 INFO L87 Difference]: Start difference. First operand 207 states and 322 transitions. Second operand has 8 states, 8 states have (on average 8.0) internal successors, (64), 8 states have internal predecessors, (64), 1 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) [2024-11-22 07:07:49,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 07:07:49,622 INFO L93 Difference]: Finished difference Result 523 states and 794 transitions. [2024-11-22 07:07:49,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-22 07:07:49,623 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.0) internal successors, (64), 8 states have internal predecessors, (64), 1 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) Word has length 261 [2024-11-22 07:07:49,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 07:07:49,626 INFO L225 Difference]: With dead ends: 523 [2024-11-22 07:07:49,626 INFO L226 Difference]: Without dead ends: 319 [2024-11-22 07:07:49,627 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 536 GetRequests, 504 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 285 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=208, Invalid=914, Unknown=0, NotChecked=0, Total=1122 [2024-11-22 07:07:49,628 INFO L432 NwaCegarLoop]: 246 mSDtfsCounter, 290 mSDsluCounter, 1048 mSDsCounter, 0 mSdLazyCounter, 456 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 290 SdHoareTripleChecker+Valid, 1294 SdHoareTripleChecker+Invalid, 465 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 456 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-22 07:07:49,628 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [290 Valid, 1294 Invalid, 465 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 456 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-22 07:07:49,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2024-11-22 07:07:49,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 229. [2024-11-22 07:07:49,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229 states, 181 states have (on average 1.4696132596685083) internal successors, (266), 182 states have internal predecessors, (266), 45 states have call successors, (45), 2 states have call predecessors, (45), 2 states have return successors, (45), 44 states have call predecessors, (45), 45 states have call successors, (45) [2024-11-22 07:07:49,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 356 transitions. [2024-11-22 07:07:49,640 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 356 transitions. Word has length 261 [2024-11-22 07:07:49,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 07:07:49,641 INFO L471 AbstractCegarLoop]: Abstraction has 229 states and 356 transitions. [2024-11-22 07:07:49,641 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.0) internal successors, (64), 8 states have internal predecessors, (64), 1 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) [2024-11-22 07:07:49,641 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 356 transitions. [2024-11-22 07:07:49,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2024-11-22 07:07:49,644 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 07:07:49,645 INFO L215 NwaCegarLoop]: trace histogram [40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:07:49,653 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-22 07:07:49,845 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 07:07:49,845 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 07:07:49,846 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 07:07:49,846 INFO L85 PathProgramCache]: Analyzing trace with hash 752822408, now seen corresponding path program 1 times [2024-11-22 07:07:49,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 07:07:49,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847708025] [2024-11-22 07:07:49,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 07:07:49,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 07:07:49,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 07:07:50,889 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 33 proven. 84 refuted. 0 times theorem prover too weak. 3003 trivial. 0 not checked. [2024-11-22 07:07:50,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 07:07:50,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1847708025] [2024-11-22 07:07:50,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1847708025] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 07:07:50,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [316351819] [2024-11-22 07:07:50,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 07:07:50,890 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 07:07:50,890 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 07:07:50,892 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 07:07:50,893 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 07:07:51,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 07:07:51,004 INFO L255 TraceCheckSpWp]: Trace formula consists of 595 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-22 07:07:51,008 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 07:07:51,280 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3120 trivial. 0 not checked. [2024-11-22 07:07:51,280 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 07:07:51,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [316351819] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 07:07:51,280 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 07:07:51,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 13 [2024-11-22 07:07:51,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268511648] [2024-11-22 07:07:51,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 07:07:51,281 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-22 07:07:51,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 07:07:51,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-22 07:07:51,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2024-11-22 07:07:51,282 INFO L87 Difference]: Start difference. First operand 229 states and 356 transitions. Second operand has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 1 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) [2024-11-22 07:07:51,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 07:07:51,672 INFO L93 Difference]: Finished difference Result 514 states and 788 transitions. [2024-11-22 07:07:51,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-22 07:07:51,673 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 1 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) Word has length 261 [2024-11-22 07:07:51,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 07:07:51,676 INFO L225 Difference]: With dead ends: 514 [2024-11-22 07:07:51,676 INFO L226 Difference]: Without dead ends: 288 [2024-11-22 07:07:51,677 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 260 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2024-11-22 07:07:51,678 INFO L432 NwaCegarLoop]: 236 mSDtfsCounter, 93 mSDsluCounter, 834 mSDsCounter, 0 mSdLazyCounter, 253 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 1070 SdHoareTripleChecker+Invalid, 253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-22 07:07:51,678 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 1070 Invalid, 253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 253 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-22 07:07:51,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2024-11-22 07:07:51,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 251. [2024-11-22 07:07:51,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 251 states, 203 states have (on average 1.477832512315271) internal successors, (300), 204 states have internal predecessors, (300), 45 states have call successors, (45), 2 states have call predecessors, (45), 2 states have return successors, (45), 44 states have call predecessors, (45), 45 states have call successors, (45) [2024-11-22 07:07:51,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 390 transitions. [2024-11-22 07:07:51,695 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 390 transitions. Word has length 261 [2024-11-22 07:07:51,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 07:07:51,696 INFO L471 AbstractCegarLoop]: Abstraction has 251 states and 390 transitions. [2024-11-22 07:07:51,696 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 1 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) [2024-11-22 07:07:51,697 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 390 transitions. [2024-11-22 07:07:51,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2024-11-22 07:07:51,698 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 07:07:51,698 INFO L215 NwaCegarLoop]: trace histogram [40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:07:51,716 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 07:07:51,898 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 07:07:51,898 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 07:07:51,899 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 07:07:51,899 INFO L85 PathProgramCache]: Analyzing trace with hash -1504149713, now seen corresponding path program 1 times [2024-11-22 07:07:51,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 07:07:51,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173355342] [2024-11-22 07:07:51,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 07:07:51,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 07:07:51,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 07:07:53,383 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 33 proven. 84 refuted. 0 times theorem prover too weak. 3003 trivial. 0 not checked. [2024-11-22 07:07:53,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 07:07:53,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1173355342] [2024-11-22 07:07:53,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1173355342] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 07:07:53,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1649456474] [2024-11-22 07:07:53,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 07:07:53,385 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 07:07:53,385 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 07:07:53,387 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 07:07:53,388 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 07:07:53,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 07:07:53,506 INFO L255 TraceCheckSpWp]: Trace formula consists of 597 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-22 07:07:53,513 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 07:07:54,102 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 1359 proven. 81 refuted. 0 times theorem prover too weak. 1680 trivial. 0 not checked. [2024-11-22 07:07:54,103 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 07:07:54,771 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3120 trivial. 0 not checked. [2024-11-22 07:07:54,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1649456474] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-22 07:07:54,771 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-22 07:07:54,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [12, 11] total 23 [2024-11-22 07:07:54,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653409734] [2024-11-22 07:07:54,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 07:07:54,772 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-22 07:07:54,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 07:07:54,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-22 07:07:54,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=407, Unknown=0, NotChecked=0, Total=506 [2024-11-22 07:07:54,772 INFO L87 Difference]: Start difference. First operand 251 states and 390 transitions. Second operand has 8 states, 8 states have (on average 8.0) internal successors, (64), 8 states have internal predecessors, (64), 1 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) [2024-11-22 07:07:56,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 07:07:56,006 INFO L93 Difference]: Finished difference Result 574 states and 871 transitions. [2024-11-22 07:07:56,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-22 07:07:56,006 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.0) internal successors, (64), 8 states have internal predecessors, (64), 1 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) Word has length 261 [2024-11-22 07:07:56,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 07:07:56,008 INFO L225 Difference]: With dead ends: 574 [2024-11-22 07:07:56,008 INFO L226 Difference]: Without dead ends: 326 [2024-11-22 07:07:56,009 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 541 GetRequests, 516 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=142, Invalid=560, Unknown=0, NotChecked=0, Total=702 [2024-11-22 07:07:56,009 INFO L432 NwaCegarLoop]: 313 mSDtfsCounter, 189 mSDsluCounter, 1272 mSDsCounter, 0 mSdLazyCounter, 469 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 189 SdHoareTripleChecker+Valid, 1585 SdHoareTripleChecker+Invalid, 477 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 469 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-22 07:07:56,010 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [189 Valid, 1585 Invalid, 477 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 469 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-22 07:07:56,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2024-11-22 07:07:56,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 232. [2024-11-22 07:07:56,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 184 states have (on average 1.4673913043478262) internal successors, (270), 185 states have internal predecessors, (270), 45 states have call successors, (45), 2 states have call predecessors, (45), 2 states have return successors, (45), 44 states have call predecessors, (45), 45 states have call successors, (45) [2024-11-22 07:07:56,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 360 transitions. [2024-11-22 07:07:56,020 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 360 transitions. Word has length 261 [2024-11-22 07:07:56,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 07:07:56,020 INFO L471 AbstractCegarLoop]: Abstraction has 232 states and 360 transitions. [2024-11-22 07:07:56,020 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.0) internal successors, (64), 8 states have internal predecessors, (64), 1 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) [2024-11-22 07:07:56,021 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 360 transitions. [2024-11-22 07:07:56,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2024-11-22 07:07:56,022 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 07:07:56,022 INFO L215 NwaCegarLoop]: trace histogram [40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:07:56,037 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 07:07:56,222 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2024-11-22 07:07:56,223 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 07:07:56,223 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 07:07:56,223 INFO L85 PathProgramCache]: Analyzing trace with hash -1853201146, now seen corresponding path program 1 times [2024-11-22 07:07:56,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 07:07:56,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073899076] [2024-11-22 07:07:56,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 07:07:56,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 07:07:56,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 07:07:57,165 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 33 proven. 84 refuted. 0 times theorem prover too weak. 3003 trivial. 0 not checked. [2024-11-22 07:07:57,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 07:07:57,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073899076] [2024-11-22 07:07:57,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1073899076] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 07:07:57,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [754722654] [2024-11-22 07:07:57,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 07:07:57,165 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 07:07:57,165 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 07:07:57,168 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 07:07:57,168 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 07:07:57,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 07:07:57,289 INFO L255 TraceCheckSpWp]: Trace formula consists of 595 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-22 07:07:57,293 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 07:07:57,825 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 1359 proven. 81 refuted. 0 times theorem prover too weak. 1680 trivial. 0 not checked. [2024-11-22 07:07:57,826 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 07:07:58,519 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3120 trivial. 0 not checked. [2024-11-22 07:07:58,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [754722654] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-22 07:07:58,520 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-22 07:07:58,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9, 11] total 20 [2024-11-22 07:07:58,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902217469] [2024-11-22 07:07:58,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 07:07:58,521 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-22 07:07:58,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 07:07:58,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-22 07:07:58,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=289, Unknown=0, NotChecked=0, Total=380 [2024-11-22 07:07:58,522 INFO L87 Difference]: Start difference. First operand 232 states and 360 transitions. Second operand has 8 states, 8 states have (on average 8.0) internal successors, (64), 8 states have internal predecessors, (64), 1 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) [2024-11-22 07:07:59,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 07:07:59,528 INFO L93 Difference]: Finished difference Result 551 states and 835 transitions. [2024-11-22 07:07:59,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-22 07:07:59,529 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.0) internal successors, (64), 8 states have internal predecessors, (64), 1 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) Word has length 261 [2024-11-22 07:07:59,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 07:07:59,531 INFO L225 Difference]: With dead ends: 551 [2024-11-22 07:07:59,531 INFO L226 Difference]: Without dead ends: 322 [2024-11-22 07:07:59,532 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 537 GetRequests, 515 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=134, Invalid=418, Unknown=0, NotChecked=0, Total=552 [2024-11-22 07:07:59,532 INFO L432 NwaCegarLoop]: 269 mSDtfsCounter, 229 mSDsluCounter, 893 mSDsCounter, 0 mSdLazyCounter, 343 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 229 SdHoareTripleChecker+Valid, 1162 SdHoareTripleChecker+Invalid, 348 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 343 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-22 07:07:59,532 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [229 Valid, 1162 Invalid, 348 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 343 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-22 07:07:59,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2024-11-22 07:07:59,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 211. [2024-11-22 07:07:59,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 211 states, 163 states have (on average 1.4478527607361964) internal successors, (236), 164 states have internal predecessors, (236), 45 states have call successors, (45), 2 states have call predecessors, (45), 2 states have return successors, (45), 44 states have call predecessors, (45), 45 states have call successors, (45) [2024-11-22 07:07:59,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 326 transitions. [2024-11-22 07:07:59,542 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 326 transitions. Word has length 261 [2024-11-22 07:07:59,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 07:07:59,542 INFO L471 AbstractCegarLoop]: Abstraction has 211 states and 326 transitions. [2024-11-22 07:07:59,542 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.0) internal successors, (64), 8 states have internal predecessors, (64), 1 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) [2024-11-22 07:07:59,542 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 326 transitions. [2024-11-22 07:07:59,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2024-11-22 07:07:59,543 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 07:07:59,544 INFO L215 NwaCegarLoop]: trace histogram [40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:07:59,552 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-22 07:07:59,744 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-22 07:07:59,744 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 07:07:59,744 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 07:07:59,745 INFO L85 PathProgramCache]: Analyzing trace with hash -397405846, now seen corresponding path program 1 times [2024-11-22 07:07:59,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 07:07:59,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108215437] [2024-11-22 07:07:59,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 07:07:59,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 07:07:59,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 07:08:00,190 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 18 proven. 99 refuted. 0 times theorem prover too weak. 3003 trivial. 0 not checked. [2024-11-22 07:08:00,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 07:08:00,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108215437] [2024-11-22 07:08:00,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [108215437] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 07:08:00,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [313739741] [2024-11-22 07:08:00,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 07:08:00,191 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 07:08:00,191 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 07:08:00,192 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 07:08:00,192 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-22 07:08:00,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 07:08:00,296 INFO L255 TraceCheckSpWp]: Trace formula consists of 603 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-22 07:08:00,299 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 07:08:00,377 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3120 trivial. 0 not checked. [2024-11-22 07:08:00,377 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 07:08:00,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [313739741] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 07:08:00,377 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 07:08:00,377 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [12] total 16 [2024-11-22 07:08:00,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714774514] [2024-11-22 07:08:00,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 07:08:00,378 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 07:08:00,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 07:08:00,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 07:08:00,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=209, Unknown=0, NotChecked=0, Total=240 [2024-11-22 07:08:00,379 INFO L87 Difference]: Start difference. First operand 211 states and 326 transitions. Second operand has 6 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 1 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) [2024-11-22 07:08:00,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 07:08:00,544 INFO L93 Difference]: Finished difference Result 496 states and 750 transitions. [2024-11-22 07:08:00,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-22 07:08:00,545 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 1 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) Word has length 263 [2024-11-22 07:08:00,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 07:08:00,547 INFO L225 Difference]: With dead ends: 496 [2024-11-22 07:08:00,547 INFO L226 Difference]: Without dead ends: 288 [2024-11-22 07:08:00,548 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 277 GetRequests, 262 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=237, Unknown=0, NotChecked=0, Total=272 [2024-11-22 07:08:00,548 INFO L432 NwaCegarLoop]: 198 mSDtfsCounter, 34 mSDsluCounter, 728 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 926 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 07:08:00,548 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 926 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 07:08:00,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2024-11-22 07:08:00,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 284. [2024-11-22 07:08:00,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 284 states, 230 states have (on average 1.4043478260869566) internal successors, (323), 233 states have internal predecessors, (323), 49 states have call successors, (49), 4 states have call predecessors, (49), 4 states have return successors, (49), 46 states have call predecessors, (49), 49 states have call successors, (49) [2024-11-22 07:08:00,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 421 transitions. [2024-11-22 07:08:00,564 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 421 transitions. Word has length 263 [2024-11-22 07:08:00,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 07:08:00,565 INFO L471 AbstractCegarLoop]: Abstraction has 284 states and 421 transitions. [2024-11-22 07:08:00,565 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 1 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) [2024-11-22 07:08:00,565 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 421 transitions. [2024-11-22 07:08:00,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2024-11-22 07:08:00,566 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 07:08:00,566 INFO L215 NwaCegarLoop]: trace histogram [40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:08:00,575 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-22 07:08:00,767 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-22 07:08:00,767 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 07:08:00,767 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 07:08:00,768 INFO L85 PathProgramCache]: Analyzing trace with hash -699171126, now seen corresponding path program 1 times [2024-11-22 07:08:00,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 07:08:00,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195709898] [2024-11-22 07:08:00,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 07:08:00,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 07:08:00,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 07:08:01,170 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 36 proven. 192 refuted. 0 times theorem prover too weak. 2892 trivial. 0 not checked. [2024-11-22 07:08:01,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 07:08:01,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195709898] [2024-11-22 07:08:01,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [195709898] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 07:08:01,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1264238460] [2024-11-22 07:08:01,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 07:08:01,171 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 07:08:01,171 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 07:08:01,173 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 07:08:01,174 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-22 07:08:01,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 07:08:01,300 INFO L255 TraceCheckSpWp]: Trace formula consists of 604 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-22 07:08:01,303 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 07:08:01,956 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 878 proven. 192 refuted. 0 times theorem prover too weak. 2050 trivial. 0 not checked. [2024-11-22 07:08:01,957 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 07:08:02,289 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 36 proven. 195 refuted. 0 times theorem prover too weak. 2889 trivial. 0 not checked. [2024-11-22 07:08:02,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1264238460] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 07:08:02,289 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 07:08:02,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 11] total 27 [2024-11-22 07:08:02,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312570966] [2024-11-22 07:08:02,289 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 07:08:02,290 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-22 07:08:02,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 07:08:02,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-22 07:08:02,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=557, Unknown=0, NotChecked=0, Total=702 [2024-11-22 07:08:02,291 INFO L87 Difference]: Start difference. First operand 284 states and 421 transitions. Second operand has 27 states, 26 states have (on average 6.538461538461538) internal successors, (170), 27 states have internal predecessors, (170), 10 states have call successors, (120), 4 states have call predecessors, (120), 8 states have return successors, (120), 10 states have call predecessors, (120), 10 states have call successors, (120) [2024-11-22 07:08:03,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 07:08:03,689 INFO L93 Difference]: Finished difference Result 891 states and 1308 transitions. [2024-11-22 07:08:03,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-22 07:08:03,690 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 6.538461538461538) internal successors, (170), 27 states have internal predecessors, (170), 10 states have call successors, (120), 4 states have call predecessors, (120), 8 states have return successors, (120), 10 states have call predecessors, (120), 10 states have call successors, (120) Word has length 263 [2024-11-22 07:08:03,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 07:08:03,693 INFO L225 Difference]: With dead ends: 891 [2024-11-22 07:08:03,693 INFO L226 Difference]: Without dead ends: 610 [2024-11-22 07:08:03,696 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 559 GetRequests, 514 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 451 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=518, Invalid=1644, Unknown=0, NotChecked=0, Total=2162 [2024-11-22 07:08:03,696 INFO L432 NwaCegarLoop]: 193 mSDtfsCounter, 1007 mSDsluCounter, 2088 mSDsCounter, 0 mSdLazyCounter, 1819 mSolverCounterSat, 278 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1008 SdHoareTripleChecker+Valid, 2281 SdHoareTripleChecker+Invalid, 2097 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 278 IncrementalHoareTripleChecker+Valid, 1819 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-22 07:08:03,697 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1008 Valid, 2281 Invalid, 2097 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [278 Valid, 1819 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-22 07:08:03,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 610 states. [2024-11-22 07:08:03,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 610 to 526. [2024-11-22 07:08:03,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 526 states, 417 states have (on average 1.3884892086330936) internal successors, (579), 423 states have internal predecessors, (579), 98 states have call successors, (98), 10 states have call predecessors, (98), 10 states have return successors, (98), 92 states have call predecessors, (98), 98 states have call successors, (98) [2024-11-22 07:08:03,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 526 states to 526 states and 775 transitions. [2024-11-22 07:08:03,742 INFO L78 Accepts]: Start accepts. Automaton has 526 states and 775 transitions. Word has length 263 [2024-11-22 07:08:03,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 07:08:03,743 INFO L471 AbstractCegarLoop]: Abstraction has 526 states and 775 transitions. [2024-11-22 07:08:03,743 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 6.538461538461538) internal successors, (170), 27 states have internal predecessors, (170), 10 states have call successors, (120), 4 states have call predecessors, (120), 8 states have return successors, (120), 10 states have call predecessors, (120), 10 states have call successors, (120) [2024-11-22 07:08:03,743 INFO L276 IsEmpty]: Start isEmpty. Operand 526 states and 775 transitions. [2024-11-22 07:08:03,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2024-11-22 07:08:03,744 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 07:08:03,744 INFO L215 NwaCegarLoop]: trace histogram [40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:08:03,754 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-22 07:08:03,945 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-22 07:08:03,946 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 07:08:03,946 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 07:08:03,946 INFO L85 PathProgramCache]: Analyzing trace with hash -1121872952, now seen corresponding path program 1 times [2024-11-22 07:08:03,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 07:08:03,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134572245] [2024-11-22 07:08:03,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 07:08:03,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 07:08:04,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-22 07:08:04,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1675376940] [2024-11-22 07:08:04,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 07:08:04,033 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 07:08:04,034 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 07:08:04,035 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 07:08:04,037 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-22 07:08:04,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 07:08:04,177 INFO L255 TraceCheckSpWp]: Trace formula consists of 604 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-22 07:08:04,183 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 07:08:04,434 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 607 proven. 105 refuted. 0 times theorem prover too weak. 2408 trivial. 0 not checked. [2024-11-22 07:08:04,434 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 07:08:04,724 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 12 proven. 105 refuted. 0 times theorem prover too weak. 3003 trivial. 0 not checked. [2024-11-22 07:08:04,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 07:08:04,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134572245] [2024-11-22 07:08:04,725 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-22 07:08:04,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1675376940] [2024-11-22 07:08:04,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1675376940] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 07:08:04,726 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-22 07:08:04,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2024-11-22 07:08:04,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126243595] [2024-11-22 07:08:04,726 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-22 07:08:04,726 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-22 07:08:04,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 07:08:04,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-22 07:08:04,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2024-11-22 07:08:04,727 INFO L87 Difference]: Start difference. First operand 526 states and 775 transitions. Second operand has 16 states, 16 states have (on average 7.5625) internal successors, (121), 16 states have internal predecessors, (121), 3 states have call successors, (75), 2 states have call predecessors, (75), 4 states have return successors, (76), 3 states have call predecessors, (76), 3 states have call successors, (76) [2024-11-22 07:08:05,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 07:08:05,694 INFO L93 Difference]: Finished difference Result 1306 states and 1864 transitions. [2024-11-22 07:08:05,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-22 07:08:05,696 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 7.5625) internal successors, (121), 16 states have internal predecessors, (121), 3 states have call successors, (75), 2 states have call predecessors, (75), 4 states have return successors, (76), 3 states have call predecessors, (76), 3 states have call successors, (76) Word has length 263 [2024-11-22 07:08:05,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 07:08:05,701 INFO L225 Difference]: With dead ends: 1306 [2024-11-22 07:08:05,701 INFO L226 Difference]: Without dead ends: 783 [2024-11-22 07:08:05,703 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 534 GetRequests, 510 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=167, Invalid=483, Unknown=0, NotChecked=0, Total=650 [2024-11-22 07:08:05,703 INFO L432 NwaCegarLoop]: 198 mSDtfsCounter, 297 mSDsluCounter, 916 mSDsCounter, 0 mSdLazyCounter, 889 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 303 SdHoareTripleChecker+Valid, 1114 SdHoareTripleChecker+Invalid, 920 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 889 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-22 07:08:05,703 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [303 Valid, 1114 Invalid, 920 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 889 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-22 07:08:05,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 783 states. [2024-11-22 07:08:05,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 783 to 444. [2024-11-22 07:08:05,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 444 states, 351 states have (on average 1.4074074074074074) internal successors, (494), 353 states have internal predecessors, (494), 84 states have call successors, (84), 8 states have call predecessors, (84), 8 states have return successors, (84), 82 states have call predecessors, (84), 84 states have call successors, (84) [2024-11-22 07:08:05,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 444 states to 444 states and 662 transitions. [2024-11-22 07:08:05,741 INFO L78 Accepts]: Start accepts. Automaton has 444 states and 662 transitions. Word has length 263 [2024-11-22 07:08:05,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 07:08:05,743 INFO L471 AbstractCegarLoop]: Abstraction has 444 states and 662 transitions. [2024-11-22 07:08:05,743 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 7.5625) internal successors, (121), 16 states have internal predecessors, (121), 3 states have call successors, (75), 2 states have call predecessors, (75), 4 states have return successors, (76), 3 states have call predecessors, (76), 3 states have call successors, (76) [2024-11-22 07:08:05,743 INFO L276 IsEmpty]: Start isEmpty. Operand 444 states and 662 transitions. [2024-11-22 07:08:05,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2024-11-22 07:08:05,745 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 07:08:05,745 INFO L215 NwaCegarLoop]: trace histogram [40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:08:05,753 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-22 07:08:05,946 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-22 07:08:05,947 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 07:08:05,947 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 07:08:05,947 INFO L85 PathProgramCache]: Analyzing trace with hash -1552850977, now seen corresponding path program 1 times [2024-11-22 07:08:05,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 07:08:05,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1659844915] [2024-11-22 07:08:05,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 07:08:05,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 07:08:05,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 07:08:06,033 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3120 trivial. 0 not checked. [2024-11-22 07:08:06,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 07:08:06,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1659844915] [2024-11-22 07:08:06,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1659844915] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 07:08:06,034 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 07:08:06,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 07:08:06,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786003277] [2024-11-22 07:08:06,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 07:08:06,034 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 07:08:06,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 07:08:06,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 07:08:06,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 07:08:06,035 INFO L87 Difference]: Start difference. First operand 444 states and 662 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 1 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) [2024-11-22 07:08:06,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 07:08:06,117 INFO L93 Difference]: Finished difference Result 1113 states and 1670 transitions. [2024-11-22 07:08:06,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 07:08:06,118 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 1 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) Word has length 263 [2024-11-22 07:08:06,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 07:08:06,123 INFO L225 Difference]: With dead ends: 1113 [2024-11-22 07:08:06,124 INFO L226 Difference]: Without dead ends: 672 [2024-11-22 07:08:06,125 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 07:08:06,125 INFO L432 NwaCegarLoop]: 230 mSDtfsCounter, 192 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 192 SdHoareTripleChecker+Valid, 420 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 07:08:06,126 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [192 Valid, 420 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 07:08:06,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 672 states. [2024-11-22 07:08:06,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 672 to 610. [2024-11-22 07:08:06,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 610 states, 429 states have (on average 1.3286713286713288) internal successors, (570), 433 states have internal predecessors, (570), 164 states have call successors, (164), 16 states have call predecessors, (164), 16 states have return successors, (164), 160 states have call predecessors, (164), 164 states have call successors, (164) [2024-11-22 07:08:06,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 610 states to 610 states and 898 transitions. [2024-11-22 07:08:06,172 INFO L78 Accepts]: Start accepts. Automaton has 610 states and 898 transitions. Word has length 263 [2024-11-22 07:08:06,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 07:08:06,172 INFO L471 AbstractCegarLoop]: Abstraction has 610 states and 898 transitions. [2024-11-22 07:08:06,173 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 1 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) [2024-11-22 07:08:06,173 INFO L276 IsEmpty]: Start isEmpty. Operand 610 states and 898 transitions. [2024-11-22 07:08:06,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2024-11-22 07:08:06,174 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 07:08:06,174 INFO L215 NwaCegarLoop]: trace histogram [40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:08:06,174 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-22 07:08:06,174 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 07:08:06,175 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 07:08:06,175 INFO L85 PathProgramCache]: Analyzing trace with hash -415102112, now seen corresponding path program 1 times [2024-11-22 07:08:06,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 07:08:06,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723912083] [2024-11-22 07:08:06,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 07:08:06,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 07:08:06,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 07:08:07,709 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3120 trivial. 0 not checked. [2024-11-22 07:08:07,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 07:08:07,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723912083] [2024-11-22 07:08:07,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [723912083] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 07:08:07,710 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 07:08:07,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-22 07:08:07,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91423453] [2024-11-22 07:08:07,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 07:08:07,710 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-22 07:08:07,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 07:08:07,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-22 07:08:07,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-11-22 07:08:07,711 INFO L87 Difference]: Start difference. First operand 610 states and 898 transitions. Second operand has 12 states, 12 states have (on average 5.583333333333333) internal successors, (67), 12 states have internal predecessors, (67), 1 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) [2024-11-22 07:08:09,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 07:08:09,109 INFO L93 Difference]: Finished difference Result 1489 states and 2181 transitions. [2024-11-22 07:08:09,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-22 07:08:09,109 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.583333333333333) internal successors, (67), 12 states have internal predecessors, (67), 1 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) Word has length 264 [2024-11-22 07:08:09,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 07:08:09,114 INFO L225 Difference]: With dead ends: 1489 [2024-11-22 07:08:09,115 INFO L226 Difference]: Without dead ends: 882 [2024-11-22 07:08:09,117 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=79, Invalid=227, Unknown=0, NotChecked=0, Total=306 [2024-11-22 07:08:09,118 INFO L432 NwaCegarLoop]: 360 mSDtfsCounter, 402 mSDsluCounter, 2150 mSDsCounter, 0 mSdLazyCounter, 1128 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 402 SdHoareTripleChecker+Valid, 2510 SdHoareTripleChecker+Invalid, 1130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-22 07:08:09,118 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [402 Valid, 2510 Invalid, 1130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1128 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-22 07:08:09,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 882 states. [2024-11-22 07:08:09,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 882 to 682. [2024-11-22 07:08:09,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 682 states, 501 states have (on average 1.3333333333333333) internal successors, (668), 505 states have internal predecessors, (668), 164 states have call successors, (164), 16 states have call predecessors, (164), 16 states have return successors, (164), 160 states have call predecessors, (164), 164 states have call successors, (164) [2024-11-22 07:08:09,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 682 states to 682 states and 996 transitions. [2024-11-22 07:08:09,164 INFO L78 Accepts]: Start accepts. Automaton has 682 states and 996 transitions. Word has length 264 [2024-11-22 07:08:09,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 07:08:09,164 INFO L471 AbstractCegarLoop]: Abstraction has 682 states and 996 transitions. [2024-11-22 07:08:09,165 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.583333333333333) internal successors, (67), 12 states have internal predecessors, (67), 1 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) [2024-11-22 07:08:09,165 INFO L276 IsEmpty]: Start isEmpty. Operand 682 states and 996 transitions. [2024-11-22 07:08:09,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2024-11-22 07:08:09,166 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 07:08:09,166 INFO L215 NwaCegarLoop]: trace histogram [40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:08:09,166 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-22 07:08:09,166 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 07:08:09,167 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 07:08:09,167 INFO L85 PathProgramCache]: Analyzing trace with hash 1273841630, now seen corresponding path program 1 times [2024-11-22 07:08:09,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 07:08:09,167 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696044616] [2024-11-22 07:08:09,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 07:08:09,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 07:08:09,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 07:08:09,376 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3120 trivial. 0 not checked. [2024-11-22 07:08:09,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 07:08:09,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696044616] [2024-11-22 07:08:09,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [696044616] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 07:08:09,377 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 07:08:09,377 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-22 07:08:09,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253520920] [2024-11-22 07:08:09,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 07:08:09,378 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 07:08:09,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 07:08:09,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 07:08:09,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-22 07:08:09,379 INFO L87 Difference]: Start difference. First operand 682 states and 996 transitions. Second operand has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 2 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 2 states have call predecessors, (40), 2 states have call successors, (40) [2024-11-22 07:08:09,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 07:08:09,697 INFO L93 Difference]: Finished difference Result 1718 states and 2467 transitions. [2024-11-22 07:08:09,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 07:08:09,698 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 2 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 2 states have call predecessors, (40), 2 states have call successors, (40) Word has length 264 [2024-11-22 07:08:09,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 07:08:09,703 INFO L225 Difference]: With dead ends: 1718 [2024-11-22 07:08:09,703 INFO L226 Difference]: Without dead ends: 1039 [2024-11-22 07:08:09,705 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2024-11-22 07:08:09,705 INFO L432 NwaCegarLoop]: 237 mSDtfsCounter, 301 mSDsluCounter, 234 mSDsCounter, 0 mSdLazyCounter, 288 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 301 SdHoareTripleChecker+Valid, 471 SdHoareTripleChecker+Invalid, 332 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 288 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-22 07:08:09,705 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [301 Valid, 471 Invalid, 332 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 288 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-22 07:08:09,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1039 states. [2024-11-22 07:08:09,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1039 to 741. [2024-11-22 07:08:09,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 741 states, 560 states have (on average 1.3357142857142856) internal successors, (748), 564 states have internal predecessors, (748), 164 states have call successors, (164), 16 states have call predecessors, (164), 16 states have return successors, (164), 160 states have call predecessors, (164), 164 states have call successors, (164) [2024-11-22 07:08:09,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 741 states to 741 states and 1076 transitions. [2024-11-22 07:08:09,761 INFO L78 Accepts]: Start accepts. Automaton has 741 states and 1076 transitions. Word has length 264 [2024-11-22 07:08:09,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 07:08:09,761 INFO L471 AbstractCegarLoop]: Abstraction has 741 states and 1076 transitions. [2024-11-22 07:08:09,761 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 2 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 2 states have call predecessors, (40), 2 states have call successors, (40) [2024-11-22 07:08:09,761 INFO L276 IsEmpty]: Start isEmpty. Operand 741 states and 1076 transitions. [2024-11-22 07:08:09,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2024-11-22 07:08:09,762 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 07:08:09,763 INFO L215 NwaCegarLoop]: trace histogram [40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:08:09,763 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-22 07:08:09,763 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 07:08:09,763 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 07:08:09,763 INFO L85 PathProgramCache]: Analyzing trace with hash -1562656248, now seen corresponding path program 1 times [2024-11-22 07:08:09,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 07:08:09,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324203965] [2024-11-22 07:08:09,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 07:08:09,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 07:08:09,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 07:08:09,837 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3120 trivial. 0 not checked. [2024-11-22 07:08:09,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 07:08:09,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [324203965] [2024-11-22 07:08:09,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [324203965] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 07:08:09,837 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 07:08:09,837 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 07:08:09,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313863548] [2024-11-22 07:08:09,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 07:08:09,838 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 07:08:09,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 07:08:09,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 07:08:09,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 07:08:09,839 INFO L87 Difference]: Start difference. First operand 741 states and 1076 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 1 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) [2024-11-22 07:08:09,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 07:08:09,918 INFO L93 Difference]: Finished difference Result 1584 states and 2285 transitions. [2024-11-22 07:08:09,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 07:08:09,918 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 1 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) Word has length 264 [2024-11-22 07:08:09,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 07:08:09,922 INFO L225 Difference]: With dead ends: 1584 [2024-11-22 07:08:09,922 INFO L226 Difference]: Without dead ends: 846 [2024-11-22 07:08:09,924 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 07:08:09,925 INFO L432 NwaCegarLoop]: 203 mSDtfsCounter, 27 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 387 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 07:08:09,925 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 387 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 07:08:09,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 846 states. [2024-11-22 07:08:09,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 846 to 749. [2024-11-22 07:08:09,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 749 states, 568 states have (on average 1.329225352112676) internal successors, (755), 572 states have internal predecessors, (755), 164 states have call successors, (164), 16 states have call predecessors, (164), 16 states have return successors, (164), 160 states have call predecessors, (164), 164 states have call successors, (164) [2024-11-22 07:08:09,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 749 states to 749 states and 1083 transitions. [2024-11-22 07:08:09,975 INFO L78 Accepts]: Start accepts. Automaton has 749 states and 1083 transitions. Word has length 264 [2024-11-22 07:08:09,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 07:08:09,975 INFO L471 AbstractCegarLoop]: Abstraction has 749 states and 1083 transitions. [2024-11-22 07:08:09,976 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 1 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) [2024-11-22 07:08:09,976 INFO L276 IsEmpty]: Start isEmpty. Operand 749 states and 1083 transitions. [2024-11-22 07:08:09,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2024-11-22 07:08:09,977 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 07:08:09,977 INFO L215 NwaCegarLoop]: trace histogram [40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:08:09,977 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-22 07:08:09,977 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 07:08:09,978 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 07:08:09,978 INFO L85 PathProgramCache]: Analyzing trace with hash 820252761, now seen corresponding path program 1 times [2024-11-22 07:08:09,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 07:08:09,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19467193] [2024-11-22 07:08:09,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 07:08:09,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 07:08:10,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-22 07:08:10,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [256735884] [2024-11-22 07:08:10,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 07:08:10,081 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 07:08:10,081 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 07:08:10,083 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 07:08:10,083 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-22 07:08:10,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 07:08:10,231 INFO L255 TraceCheckSpWp]: Trace formula consists of 600 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-22 07:08:10,235 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 07:08:10,615 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 1048 proven. 24 refuted. 0 times theorem prover too weak. 2048 trivial. 0 not checked. [2024-11-22 07:08:10,615 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 07:08:10,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 07:08:10,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19467193] [2024-11-22 07:08:10,715 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-22 07:08:10,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [256735884] [2024-11-22 07:08:10,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [256735884] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 07:08:10,715 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-22 07:08:10,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2024-11-22 07:08:10,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922757964] [2024-11-22 07:08:10,716 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-22 07:08:10,716 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-22 07:08:10,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 07:08:10,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-22 07:08:10,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2024-11-22 07:08:10,717 INFO L87 Difference]: Start difference. First operand 749 states and 1083 transitions. Second operand has 10 states, 10 states have (on average 7.9) internal successors, (79), 9 states have internal predecessors, (79), 3 states have call successors, (40), 3 states have call predecessors, (40), 5 states have return successors, (40), 3 states have call predecessors, (40), 3 states have call successors, (40) [2024-11-22 07:08:11,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 07:08:11,382 INFO L93 Difference]: Finished difference Result 2971 states and 4249 transitions. [2024-11-22 07:08:11,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-22 07:08:11,383 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.9) internal successors, (79), 9 states have internal predecessors, (79), 3 states have call successors, (40), 3 states have call predecessors, (40), 5 states have return successors, (40), 3 states have call predecessors, (40), 3 states have call successors, (40) Word has length 264 [2024-11-22 07:08:11,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 07:08:11,393 INFO L225 Difference]: With dead ends: 2971 [2024-11-22 07:08:11,393 INFO L226 Difference]: Without dead ends: 2225 [2024-11-22 07:08:11,396 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 323 GetRequests, 304 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=140, Invalid=280, Unknown=0, NotChecked=0, Total=420 [2024-11-22 07:08:11,399 INFO L432 NwaCegarLoop]: 265 mSDtfsCounter, 266 mSDsluCounter, 1057 mSDsCounter, 0 mSdLazyCounter, 721 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 298 SdHoareTripleChecker+Valid, 1322 SdHoareTripleChecker+Invalid, 813 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 721 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-22 07:08:11,400 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [298 Valid, 1322 Invalid, 813 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 721 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-22 07:08:11,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2225 states. [2024-11-22 07:08:11,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2225 to 2193. [2024-11-22 07:08:11,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2193 states, 1676 states have (on average 1.321599045346062) internal successors, (2215), 1690 states have internal predecessors, (2215), 460 states have call successors, (460), 56 states have call predecessors, (460), 56 states have return successors, (460), 446 states have call predecessors, (460), 460 states have call successors, (460) [2024-11-22 07:08:11,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2193 states to 2193 states and 3135 transitions. [2024-11-22 07:08:11,575 INFO L78 Accepts]: Start accepts. Automaton has 2193 states and 3135 transitions. Word has length 264 [2024-11-22 07:08:11,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 07:08:11,575 INFO L471 AbstractCegarLoop]: Abstraction has 2193 states and 3135 transitions. [2024-11-22 07:08:11,575 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.9) internal successors, (79), 9 states have internal predecessors, (79), 3 states have call successors, (40), 3 states have call predecessors, (40), 5 states have return successors, (40), 3 states have call predecessors, (40), 3 states have call successors, (40) [2024-11-22 07:08:11,576 INFO L276 IsEmpty]: Start isEmpty. Operand 2193 states and 3135 transitions. [2024-11-22 07:08:11,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2024-11-22 07:08:11,578 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 07:08:11,578 INFO L215 NwaCegarLoop]: trace histogram [40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:08:11,586 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-22 07:08:11,778 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-22 07:08:11,779 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 07:08:11,779 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 07:08:11,779 INFO L85 PathProgramCache]: Analyzing trace with hash -23752741, now seen corresponding path program 1 times [2024-11-22 07:08:11,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 07:08:11,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248597888] [2024-11-22 07:08:11,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 07:08:11,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 07:08:11,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-22 07:08:11,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1258816272] [2024-11-22 07:08:11,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 07:08:11,850 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 07:08:11,850 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 07:08:11,854 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 07:08:11,856 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-22 07:08:11,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 07:08:11,994 INFO L255 TraceCheckSpWp]: Trace formula consists of 598 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-22 07:08:11,997 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 07:08:12,355 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 1048 proven. 24 refuted. 0 times theorem prover too weak. 2048 trivial. 0 not checked. [2024-11-22 07:08:12,356 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 07:08:12,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 07:08:12,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248597888] [2024-11-22 07:08:12,448 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-22 07:08:12,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1258816272] [2024-11-22 07:08:12,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1258816272] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 07:08:12,448 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-22 07:08:12,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2024-11-22 07:08:12,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10661809] [2024-11-22 07:08:12,448 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-22 07:08:12,449 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-22 07:08:12,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 07:08:12,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-22 07:08:12,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2024-11-22 07:08:12,450 INFO L87 Difference]: Start difference. First operand 2193 states and 3135 transitions. Second operand has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 8 states have internal predecessors, (79), 3 states have call successors, (40), 3 states have call predecessors, (40), 5 states have return successors, (40), 3 states have call predecessors, (40), 3 states have call successors, (40) [2024-11-22 07:08:12,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 07:08:12,884 INFO L93 Difference]: Finished difference Result 5969 states and 8506 transitions. [2024-11-22 07:08:12,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-22 07:08:12,884 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 8 states have internal predecessors, (79), 3 states have call successors, (40), 3 states have call predecessors, (40), 5 states have return successors, (40), 3 states have call predecessors, (40), 3 states have call successors, (40) Word has length 264 [2024-11-22 07:08:12,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 07:08:12,902 INFO L225 Difference]: With dead ends: 5969 [2024-11-22 07:08:12,903 INFO L226 Difference]: Without dead ends: 3779 [2024-11-22 07:08:12,908 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 319 GetRequests, 306 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=130, Unknown=0, NotChecked=0, Total=210 [2024-11-22 07:08:12,909 INFO L432 NwaCegarLoop]: 242 mSDtfsCounter, 329 mSDsluCounter, 430 mSDsCounter, 0 mSdLazyCounter, 246 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 361 SdHoareTripleChecker+Valid, 672 SdHoareTripleChecker+Invalid, 339 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-22 07:08:12,909 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [361 Valid, 672 Invalid, 339 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 246 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-22 07:08:12,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3779 states. [2024-11-22 07:08:13,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3779 to 3721. [2024-11-22 07:08:13,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3721 states, 2828 states have (on average 1.3143564356435644) internal successors, (3717), 2850 states have internal predecessors, (3717), 788 states have call successors, (788), 104 states have call predecessors, (788), 104 states have return successors, (788), 766 states have call predecessors, (788), 788 states have call successors, (788) [2024-11-22 07:08:13,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3721 states to 3721 states and 5293 transitions. [2024-11-22 07:08:13,250 INFO L78 Accepts]: Start accepts. Automaton has 3721 states and 5293 transitions. Word has length 264 [2024-11-22 07:08:13,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 07:08:13,251 INFO L471 AbstractCegarLoop]: Abstraction has 3721 states and 5293 transitions. [2024-11-22 07:08:13,251 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 8 states have internal predecessors, (79), 3 states have call successors, (40), 3 states have call predecessors, (40), 5 states have return successors, (40), 3 states have call predecessors, (40), 3 states have call successors, (40) [2024-11-22 07:08:13,251 INFO L276 IsEmpty]: Start isEmpty. Operand 3721 states and 5293 transitions. [2024-11-22 07:08:13,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2024-11-22 07:08:13,254 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 07:08:13,254 INFO L215 NwaCegarLoop]: trace histogram [40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:08:13,263 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-11-22 07:08:13,455 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 07:08:13,456 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 07:08:13,456 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 07:08:13,456 INFO L85 PathProgramCache]: Analyzing trace with hash 1855942810, now seen corresponding path program 1 times [2024-11-22 07:08:13,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 07:08:13,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445479074] [2024-11-22 07:08:13,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 07:08:13,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 07:08:13,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 07:08:13,561 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3120 trivial. 0 not checked. [2024-11-22 07:08:13,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 07:08:13,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [445479074] [2024-11-22 07:08:13,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [445479074] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 07:08:13,561 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 07:08:13,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 07:08:13,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5177103] [2024-11-22 07:08:13,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 07:08:13,562 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 07:08:13,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 07:08:13,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 07:08:13,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-22 07:08:13,563 INFO L87 Difference]: Start difference. First operand 3721 states and 5293 transitions. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 1 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) [2024-11-22 07:08:14,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 07:08:14,504 INFO L93 Difference]: Finished difference Result 15381 states and 21754 transitions. [2024-11-22 07:08:14,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 07:08:14,505 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 1 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) Word has length 265 [2024-11-22 07:08:14,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 07:08:14,553 INFO L225 Difference]: With dead ends: 15381 [2024-11-22 07:08:14,553 INFO L226 Difference]: Without dead ends: 11663 [2024-11-22 07:08:14,565 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-22 07:08:14,565 INFO L432 NwaCegarLoop]: 349 mSDtfsCounter, 754 mSDsluCounter, 706 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 200 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 754 SdHoareTripleChecker+Valid, 1055 SdHoareTripleChecker+Invalid, 267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 200 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-22 07:08:14,566 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [754 Valid, 1055 Invalid, 267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [200 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-22 07:08:14,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11663 states. [2024-11-22 07:08:15,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11663 to 11629. [2024-11-22 07:08:15,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11629 states, 9172 states have (on average 1.3189053641517663) internal successors, (12097), 9258 states have internal predecessors, (12097), 2136 states have call successors, (2136), 320 states have call predecessors, (2136), 320 states have return successors, (2136), 2050 states have call predecessors, (2136), 2136 states have call successors, (2136) [2024-11-22 07:08:15,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11629 states to 11629 states and 16369 transitions. [2024-11-22 07:08:15,561 INFO L78 Accepts]: Start accepts. Automaton has 11629 states and 16369 transitions. Word has length 265 [2024-11-22 07:08:15,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 07:08:15,562 INFO L471 AbstractCegarLoop]: Abstraction has 11629 states and 16369 transitions. [2024-11-22 07:08:15,562 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 1 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) [2024-11-22 07:08:15,562 INFO L276 IsEmpty]: Start isEmpty. Operand 11629 states and 16369 transitions. [2024-11-22 07:08:15,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2024-11-22 07:08:15,568 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 07:08:15,568 INFO L215 NwaCegarLoop]: trace histogram [40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:08:15,568 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-22 07:08:15,568 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 07:08:15,569 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 07:08:15,569 INFO L85 PathProgramCache]: Analyzing trace with hash -460427046, now seen corresponding path program 1 times [2024-11-22 07:08:15,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 07:08:15,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291836798] [2024-11-22 07:08:15,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 07:08:15,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 07:08:15,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 07:08:16,186 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3120 trivial. 0 not checked. [2024-11-22 07:08:16,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 07:08:16,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291836798] [2024-11-22 07:08:16,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1291836798] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 07:08:16,187 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 07:08:16,187 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-22 07:08:16,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524669427] [2024-11-22 07:08:16,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 07:08:16,187 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 07:08:16,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 07:08:16,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 07:08:16,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-22 07:08:16,188 INFO L87 Difference]: Start difference. First operand 11629 states and 16369 transitions. Second operand has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 1 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) [2024-11-22 07:08:19,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 07:08:19,248 INFO L93 Difference]: Finished difference Result 40177 states and 56488 transitions. [2024-11-22 07:08:19,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-22 07:08:19,249 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 1 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) Word has length 265 [2024-11-22 07:08:19,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 07:08:19,349 INFO L225 Difference]: With dead ends: 40177 [2024-11-22 07:08:19,350 INFO L226 Difference]: Without dead ends: 28551 [2024-11-22 07:08:19,377 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-11-22 07:08:19,378 INFO L432 NwaCegarLoop]: 303 mSDtfsCounter, 650 mSDsluCounter, 1101 mSDsCounter, 0 mSdLazyCounter, 518 mSolverCounterSat, 249 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 650 SdHoareTripleChecker+Valid, 1404 SdHoareTripleChecker+Invalid, 767 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 249 IncrementalHoareTripleChecker+Valid, 518 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-22 07:08:19,378 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [650 Valid, 1404 Invalid, 767 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [249 Valid, 518 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-22 07:08:19,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28551 states. [2024-11-22 07:08:22,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28551 to 28451. [2024-11-22 07:08:22,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28451 states, 22542 states have (on average 1.3195812261556206) internal successors, (29746), 22758 states have internal predecessors, (29746), 5120 states have call successors, (5120), 788 states have call predecessors, (5120), 788 states have return successors, (5120), 4904 states have call predecessors, (5120), 5120 states have call successors, (5120) [2024-11-22 07:08:22,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28451 states to 28451 states and 39986 transitions. [2024-11-22 07:08:22,516 INFO L78 Accepts]: Start accepts. Automaton has 28451 states and 39986 transitions. Word has length 265 [2024-11-22 07:08:22,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 07:08:22,517 INFO L471 AbstractCegarLoop]: Abstraction has 28451 states and 39986 transitions. [2024-11-22 07:08:22,517 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 1 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) [2024-11-22 07:08:22,517 INFO L276 IsEmpty]: Start isEmpty. Operand 28451 states and 39986 transitions. [2024-11-22 07:08:22,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2024-11-22 07:08:22,525 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 07:08:22,526 INFO L215 NwaCegarLoop]: trace histogram [40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:08:22,526 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-22 07:08:22,526 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 07:08:22,526 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 07:08:22,526 INFO L85 PathProgramCache]: Analyzing trace with hash -483059300, now seen corresponding path program 1 times [2024-11-22 07:08:22,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 07:08:22,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737914047] [2024-11-22 07:08:22,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 07:08:22,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 07:08:22,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-22 07:08:22,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [336399050] [2024-11-22 07:08:22,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 07:08:22,572 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 07:08:22,572 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 07:08:22,574 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 07:08:22,575 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-22 07:08:22,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 07:08:22,716 INFO L255 TraceCheckSpWp]: Trace formula consists of 599 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-22 07:08:22,719 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 07:08:23,096 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 1048 proven. 24 refuted. 0 times theorem prover too weak. 2048 trivial. 0 not checked. [2024-11-22 07:08:23,097 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 07:08:23,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 07:08:23,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737914047] [2024-11-22 07:08:23,319 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-22 07:08:23,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [336399050] [2024-11-22 07:08:23,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [336399050] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 07:08:23,319 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-22 07:08:23,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2024-11-22 07:08:23,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362315915] [2024-11-22 07:08:23,319 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-22 07:08:23,320 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-22 07:08:23,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 07:08:23,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-22 07:08:23,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2024-11-22 07:08:23,320 INFO L87 Difference]: Start difference. First operand 28451 states and 39986 transitions. Second operand has 10 states, 10 states have (on average 8.0) internal successors, (80), 9 states have internal predecessors, (80), 3 states have call successors, (40), 3 states have call predecessors, (40), 5 states have return successors, (40), 3 states have call predecessors, (40), 3 states have call successors, (40)