./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-64.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 803cd42f Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-64.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 a9f11f8c88de8998bc882c7dd2efba11633c83e29912cc5a80cdbf720cc0a7ec --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-803cd42-m [2024-11-22 11:43:10,429 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-22 11:43:10,493 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-22 11:43:10,498 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-22 11:43:10,499 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-22 11:43:10,524 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-22 11:43:10,525 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-22 11:43:10,525 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-22 11:43:10,526 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-22 11:43:10,527 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-22 11:43:10,528 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-22 11:43:10,528 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-22 11:43:10,528 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-22 11:43:10,529 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-22 11:43:10,530 INFO L153 SettingsManager]: * Use SBE=true [2024-11-22 11:43:10,531 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-22 11:43:10,531 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-22 11:43:10,531 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-22 11:43:10,531 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-22 11:43:10,531 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-22 11:43:10,532 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-22 11:43:10,532 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-22 11:43:10,534 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-22 11:43:10,534 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-22 11:43:10,534 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-22 11:43:10,534 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-22 11:43:10,535 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-22 11:43:10,535 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-22 11:43:10,535 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-22 11:43:10,535 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-22 11:43:10,535 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-22 11:43:10,535 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-22 11:43:10,535 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 11:43:10,536 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-22 11:43:10,536 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-22 11:43:10,536 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-22 11:43:10,536 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-22 11:43:10,536 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-22 11:43:10,536 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-22 11:43:10,537 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-22 11:43:10,537 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-22 11:43:10,539 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-22 11:43:10,539 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a9f11f8c88de8998bc882c7dd2efba11633c83e29912cc5a80cdbf720cc0a7ec [2024-11-22 11:43:10,750 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-22 11:43:10,770 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-22 11:43:10,772 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-22 11:43:10,773 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-22 11:43:10,773 INFO L274 PluginConnector]: CDTParser initialized [2024-11-22 11:43:10,774 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-64.i [2024-11-22 11:43:11,999 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-22 11:43:12,207 INFO L384 CDTParser]: Found 1 translation units. [2024-11-22 11:43:12,208 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-64.i [2024-11-22 11:43:12,222 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/95293fef3/7bfea38e48b7468ababc3298b20fe9ee/FLAG88196b9d7 [2024-11-22 11:43:12,561 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/95293fef3/7bfea38e48b7468ababc3298b20fe9ee [2024-11-22 11:43:12,563 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-22 11:43:12,564 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-22 11:43:12,565 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-22 11:43:12,565 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-22 11:43:12,569 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-22 11:43:12,570 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 11:43:12" (1/1) ... [2024-11-22 11:43:12,572 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1398f65e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:43:12, skipping insertion in model container [2024-11-22 11:43:12,572 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 11:43:12" (1/1) ... [2024-11-22 11:43:12,606 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-22 11:43:12,748 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-64.i[916,929] [2024-11-22 11:43:12,875 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 11:43:12,885 INFO L200 MainTranslator]: Completed pre-run [2024-11-22 11:43:12,896 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-64.i[916,929] [2024-11-22 11:43:12,945 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 11:43:12,966 INFO L204 MainTranslator]: Completed translation [2024-11-22 11:43:12,967 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:43:12 WrapperNode [2024-11-22 11:43:12,967 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-22 11:43:12,970 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-22 11:43:12,972 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-22 11:43:12,972 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-22 11:43:12,978 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:43:12" (1/1) ... [2024-11-22 11:43:12,995 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:43:12" (1/1) ... [2024-11-22 11:43:13,070 INFO L138 Inliner]: procedures = 26, calls = 52, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 372 [2024-11-22 11:43:13,071 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-22 11:43:13,071 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-22 11:43:13,072 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-22 11:43:13,072 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-22 11:43:13,084 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:43:12" (1/1) ... [2024-11-22 11:43:13,085 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:43:12" (1/1) ... [2024-11-22 11:43:13,096 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:43:12" (1/1) ... [2024-11-22 11:43:13,130 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-22 11:43:13,134 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:43:12" (1/1) ... [2024-11-22 11:43:13,134 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:43:12" (1/1) ... [2024-11-22 11:43:13,156 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:43:12" (1/1) ... [2024-11-22 11:43:13,162 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:43:12" (1/1) ... [2024-11-22 11:43:13,171 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:43:12" (1/1) ... [2024-11-22 11:43:13,180 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:43:12" (1/1) ... [2024-11-22 11:43:13,192 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-22 11:43:13,194 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-22 11:43:13,194 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-22 11:43:13,195 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-22 11:43:13,195 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:43:12" (1/1) ... [2024-11-22 11:43:13,199 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 11:43:13,212 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 11:43:13,228 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-22 11:43:13,233 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-22 11:43:13,265 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-22 11:43:13,266 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-22 11:43:13,266 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-22 11:43:13,266 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-22 11:43:13,266 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-22 11:43:13,266 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-22 11:43:13,354 INFO L238 CfgBuilder]: Building ICFG [2024-11-22 11:43:13,355 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-22 11:43:13,957 INFO L? ?]: Removed 40 outVars from TransFormulas that were not future-live. [2024-11-22 11:43:13,957 INFO L287 CfgBuilder]: Performing block encoding [2024-11-22 11:43:13,973 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-22 11:43:13,973 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-22 11:43:13,974 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 11:43:13 BoogieIcfgContainer [2024-11-22 11:43:13,974 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-22 11:43:13,975 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-22 11:43:13,976 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-22 11:43:13,978 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-22 11:43:13,979 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 11:43:12" (1/3) ... [2024-11-22 11:43:13,979 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2643a59e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 11:43:13, skipping insertion in model container [2024-11-22 11:43:13,980 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:43:12" (2/3) ... [2024-11-22 11:43:13,980 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2643a59e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 11:43:13, skipping insertion in model container [2024-11-22 11:43:13,980 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 11:43:13" (3/3) ... [2024-11-22 11:43:13,981 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount250_file-64.i [2024-11-22 11:43:13,994 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-22 11:43:13,994 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-22 11:43:14,053 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-22 11:43:14,059 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;@560af785, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-22 11:43:14,059 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-22 11:43:14,064 INFO L276 IsEmpty]: Start isEmpty. Operand has 153 states, 111 states have (on average 1.5315315315315314) internal successors, (170), 112 states have internal predecessors, (170), 39 states have call successors, (39), 1 states have call predecessors, (39), 1 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2024-11-22 11:43:14,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2024-11-22 11:43:14,081 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 11:43:14,082 INFO L215 NwaCegarLoop]: trace histogram [39, 39, 39, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 11:43:14,083 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 11:43:14,087 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 11:43:14,088 INFO L85 PathProgramCache]: Analyzing trace with hash -571444627, now seen corresponding path program 1 times [2024-11-22 11:43:14,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 11:43:14,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548627154] [2024-11-22 11:43:14,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:43:14,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 11:43:14,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:43:14,553 INFO L134 CoverageAnalysis]: Checked inductivity of 2964 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 2888 trivial. 0 not checked. [2024-11-22 11:43:14,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 11:43:14,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548627154] [2024-11-22 11:43:14,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [548627154] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 11:43:14,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1509420701] [2024-11-22 11:43:14,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:43:14,555 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 11:43:14,555 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 11:43:14,557 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 11:43:14,558 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-22 11:43:14,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:43:14,738 INFO L255 TraceCheckSpWp]: Trace formula consists of 658 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-22 11:43:14,746 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 11:43:14,782 INFO L134 CoverageAnalysis]: Checked inductivity of 2964 backedges. 76 proven. 0 refuted. 0 times theorem prover too weak. 2888 trivial. 0 not checked. [2024-11-22 11:43:14,784 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 11:43:14,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1509420701] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 11:43:14,784 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 11:43:14,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-22 11:43:14,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522998020] [2024-11-22 11:43:14,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 11:43:14,790 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-22 11:43:14,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 11:43:14,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-22 11:43:14,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-22 11:43:14,815 INFO L87 Difference]: Start difference. First operand has 153 states, 111 states have (on average 1.5315315315315314) internal successors, (170), 112 states have internal predecessors, (170), 39 states have call successors, (39), 1 states have call predecessors, (39), 1 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) Second operand has 2 states, 2 states have (on average 35.0) internal successors, (70), 2 states have internal predecessors, (70), 2 states have call successors, (39), 2 states have call predecessors, (39), 1 states have return successors, (39), 1 states have call predecessors, (39), 2 states have call successors, (39) [2024-11-22 11:43:14,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 11:43:14,846 INFO L93 Difference]: Finished difference Result 299 states and 529 transitions. [2024-11-22 11:43:14,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-22 11:43:14,848 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 35.0) internal successors, (70), 2 states have internal predecessors, (70), 2 states have call successors, (39), 2 states have call predecessors, (39), 1 states have return successors, (39), 1 states have call predecessors, (39), 2 states have call successors, (39) Word has length 260 [2024-11-22 11:43:14,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 11:43:14,855 INFO L225 Difference]: With dead ends: 299 [2024-11-22 11:43:14,855 INFO L226 Difference]: Without dead ends: 149 [2024-11-22 11:43:14,858 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 11:43:14,860 INFO L432 NwaCegarLoop]: 241 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, 241 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 11:43:14,864 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 241 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 11:43:14,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2024-11-22 11:43:14,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 149. [2024-11-22 11:43:14,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 108 states have (on average 1.5092592592592593) internal successors, (163), 108 states have internal predecessors, (163), 39 states have call successors, (39), 1 states have call predecessors, (39), 1 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2024-11-22 11:43:14,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 241 transitions. [2024-11-22 11:43:14,906 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 241 transitions. Word has length 260 [2024-11-22 11:43:14,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 11:43:14,907 INFO L471 AbstractCegarLoop]: Abstraction has 149 states and 241 transitions. [2024-11-22 11:43:14,907 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 35.0) internal successors, (70), 2 states have internal predecessors, (70), 2 states have call successors, (39), 2 states have call predecessors, (39), 1 states have return successors, (39), 1 states have call predecessors, (39), 2 states have call successors, (39) [2024-11-22 11:43:14,907 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 241 transitions. [2024-11-22 11:43:14,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2024-11-22 11:43:14,911 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 11:43:14,912 INFO L215 NwaCegarLoop]: trace histogram [39, 39, 39, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 11:43:14,925 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-22 11:43:15,112 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-22 11:43:15,113 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 11:43:15,113 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 11:43:15,114 INFO L85 PathProgramCache]: Analyzing trace with hash -1512437133, now seen corresponding path program 1 times [2024-11-22 11:43:15,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 11:43:15,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086894783] [2024-11-22 11:43:15,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:43:15,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 11:43:15,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:43:15,376 INFO L134 CoverageAnalysis]: Checked inductivity of 2964 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2964 trivial. 0 not checked. [2024-11-22 11:43:15,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 11:43:15,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2086894783] [2024-11-22 11:43:15,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2086894783] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 11:43:15,377 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 11:43:15,377 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 11:43:15,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801863457] [2024-11-22 11:43:15,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 11:43:15,379 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 11:43:15,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 11:43:15,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 11:43:15,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 11:43:15,382 INFO L87 Difference]: Start difference. First operand 149 states and 241 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 1 states have call successors, (39), 1 states have call predecessors, (39), 1 states have return successors, (39), 1 states have call predecessors, (39), 1 states have call successors, (39) [2024-11-22 11:43:15,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 11:43:15,454 INFO L93 Difference]: Finished difference Result 373 states and 609 transitions. [2024-11-22 11:43:15,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 11:43:15,456 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 1 states have call successors, (39), 1 states have call predecessors, (39), 1 states have return successors, (39), 1 states have call predecessors, (39), 1 states have call successors, (39) Word has length 260 [2024-11-22 11:43:15,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 11:43:15,460 INFO L225 Difference]: With dead ends: 373 [2024-11-22 11:43:15,462 INFO L226 Difference]: Without dead ends: 227 [2024-11-22 11:43:15,463 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 11:43:15,466 INFO L432 NwaCegarLoop]: 245 mSDtfsCounter, 121 mSDsluCounter, 229 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 474 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 11:43:15,467 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [121 Valid, 474 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 11:43:15,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2024-11-22 11:43:15,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 169. [2024-11-22 11:43:15,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 128 states have (on average 1.5390625) internal successors, (197), 128 states have internal predecessors, (197), 39 states have call successors, (39), 1 states have call predecessors, (39), 1 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2024-11-22 11:43:15,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 275 transitions. [2024-11-22 11:43:15,489 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 275 transitions. Word has length 260 [2024-11-22 11:43:15,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 11:43:15,492 INFO L471 AbstractCegarLoop]: Abstraction has 169 states and 275 transitions. [2024-11-22 11:43:15,493 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 1 states have call successors, (39), 1 states have call predecessors, (39), 1 states have return successors, (39), 1 states have call predecessors, (39), 1 states have call successors, (39) [2024-11-22 11:43:15,493 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 275 transitions. [2024-11-22 11:43:15,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2024-11-22 11:43:15,500 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 11:43:15,500 INFO L215 NwaCegarLoop]: trace histogram [39, 39, 39, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 11:43:15,500 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-22 11:43:15,500 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 11:43:15,501 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 11:43:15,501 INFO L85 PathProgramCache]: Analyzing trace with hash -852905611, now seen corresponding path program 1 times [2024-11-22 11:43:15,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 11:43:15,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158948247] [2024-11-22 11:43:15,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:43:15,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 11:43:15,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:43:15,689 INFO L134 CoverageAnalysis]: Checked inductivity of 2964 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2964 trivial. 0 not checked. [2024-11-22 11:43:15,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 11:43:15,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158948247] [2024-11-22 11:43:15,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [158948247] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 11:43:15,692 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 11:43:15,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 11:43:15,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945484374] [2024-11-22 11:43:15,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 11:43:15,694 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 11:43:15,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 11:43:15,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 11:43:15,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 11:43:15,696 INFO L87 Difference]: Start difference. First operand 169 states and 275 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 1 states have call successors, (39), 1 states have call predecessors, (39), 1 states have return successors, (39), 1 states have call predecessors, (39), 1 states have call successors, (39) [2024-11-22 11:43:15,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 11:43:15,741 INFO L93 Difference]: Finished difference Result 393 states and 642 transitions. [2024-11-22 11:43:15,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 11:43:15,741 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 1 states have call successors, (39), 1 states have call predecessors, (39), 1 states have return successors, (39), 1 states have call predecessors, (39), 1 states have call successors, (39) Word has length 260 [2024-11-22 11:43:15,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 11:43:15,743 INFO L225 Difference]: With dead ends: 393 [2024-11-22 11:43:15,743 INFO L226 Difference]: Without dead ends: 227 [2024-11-22 11:43:15,744 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 11:43:15,745 INFO L432 NwaCegarLoop]: 356 mSDtfsCounter, 118 mSDsluCounter, 231 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 587 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 11:43:15,745 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [118 Valid, 587 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 11:43:15,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2024-11-22 11:43:15,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 175. [2024-11-22 11:43:15,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 134 states have (on average 1.544776119402985) internal successors, (207), 134 states have internal predecessors, (207), 39 states have call successors, (39), 1 states have call predecessors, (39), 1 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2024-11-22 11:43:15,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 285 transitions. [2024-11-22 11:43:15,765 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 285 transitions. Word has length 260 [2024-11-22 11:43:15,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 11:43:15,767 INFO L471 AbstractCegarLoop]: Abstraction has 175 states and 285 transitions. [2024-11-22 11:43:15,767 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 1 states have call successors, (39), 1 states have call predecessors, (39), 1 states have return successors, (39), 1 states have call predecessors, (39), 1 states have call successors, (39) [2024-11-22 11:43:15,767 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 285 transitions. [2024-11-22 11:43:15,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2024-11-22 11:43:15,771 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 11:43:15,771 INFO L215 NwaCegarLoop]: trace histogram [39, 39, 39, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 11:43:15,771 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-22 11:43:15,772 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 11:43:15,773 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 11:43:15,773 INFO L85 PathProgramCache]: Analyzing trace with hash -335035154, now seen corresponding path program 1 times [2024-11-22 11:43:15,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 11:43:15,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747017943] [2024-11-22 11:43:15,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:43:15,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 11:43:15,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:43:16,193 INFO L134 CoverageAnalysis]: Checked inductivity of 2964 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2964 trivial. 0 not checked. [2024-11-22 11:43:16,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 11:43:16,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747017943] [2024-11-22 11:43:16,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1747017943] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 11:43:16,195 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 11:43:16,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 11:43:16,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851746607] [2024-11-22 11:43:16,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 11:43:16,197 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 11:43:16,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 11:43:16,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 11:43:16,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 11:43:16,199 INFO L87 Difference]: Start difference. First operand 175 states and 285 transitions. Second operand has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 1 states have call successors, (39), 1 states have call predecessors, (39), 1 states have return successors, (39), 1 states have call predecessors, (39), 1 states have call successors, (39) [2024-11-22 11:43:16,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 11:43:16,462 INFO L93 Difference]: Finished difference Result 568 states and 927 transitions. [2024-11-22 11:43:16,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 11:43:16,462 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 1 states have call successors, (39), 1 states have call predecessors, (39), 1 states have return successors, (39), 1 states have call predecessors, (39), 1 states have call successors, (39) Word has length 262 [2024-11-22 11:43:16,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 11:43:16,465 INFO L225 Difference]: With dead ends: 568 [2024-11-22 11:43:16,465 INFO L226 Difference]: Without dead ends: 396 [2024-11-22 11:43:16,466 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-22 11:43:16,467 INFO L432 NwaCegarLoop]: 219 mSDtfsCounter, 363 mSDsluCounter, 440 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 363 SdHoareTripleChecker+Valid, 659 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-22 11:43:16,467 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [363 Valid, 659 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-22 11:43:16,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 396 states. [2024-11-22 11:43:16,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 396 to 382. [2024-11-22 11:43:16,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 382 states, 301 states have (on average 1.5614617940199336) internal successors, (470), 301 states have internal predecessors, (470), 78 states have call successors, (78), 2 states have call predecessors, (78), 2 states have return successors, (78), 78 states have call predecessors, (78), 78 states have call successors, (78) [2024-11-22 11:43:16,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 626 transitions. [2024-11-22 11:43:16,496 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 626 transitions. Word has length 262 [2024-11-22 11:43:16,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 11:43:16,496 INFO L471 AbstractCegarLoop]: Abstraction has 382 states and 626 transitions. [2024-11-22 11:43:16,497 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 1 states have call successors, (39), 1 states have call predecessors, (39), 1 states have return successors, (39), 1 states have call predecessors, (39), 1 states have call successors, (39) [2024-11-22 11:43:16,497 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 626 transitions. [2024-11-22 11:43:16,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2024-11-22 11:43:16,500 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 11:43:16,500 INFO L215 NwaCegarLoop]: trace histogram [39, 39, 39, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 11:43:16,500 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-22 11:43:16,500 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 11:43:16,500 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 11:43:16,501 INFO L85 PathProgramCache]: Analyzing trace with hash -1412486228, now seen corresponding path program 1 times [2024-11-22 11:43:16,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 11:43:16,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773045302] [2024-11-22 11:43:16,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:43:16,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 11:43:16,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:43:17,134 INFO L134 CoverageAnalysis]: Checked inductivity of 2964 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2964 trivial. 0 not checked. [2024-11-22 11:43:17,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 11:43:17,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773045302] [2024-11-22 11:43:17,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1773045302] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 11:43:17,135 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 11:43:17,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 11:43:17,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387439839] [2024-11-22 11:43:17,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 11:43:17,136 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 11:43:17,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 11:43:17,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 11:43:17,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 11:43:17,138 INFO L87 Difference]: Start difference. First operand 382 states and 626 transitions. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 1 states have call successors, (39), 1 states have call predecessors, (39), 1 states have return successors, (39), 1 states have call predecessors, (39), 1 states have call successors, (39) [2024-11-22 11:43:17,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 11:43:17,206 INFO L93 Difference]: Finished difference Result 886 states and 1444 transitions. [2024-11-22 11:43:17,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 11:43:17,207 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 1 states have call successors, (39), 1 states have call predecessors, (39), 1 states have return successors, (39), 1 states have call predecessors, (39), 1 states have call successors, (39) Word has length 263 [2024-11-22 11:43:17,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 11:43:17,211 INFO L225 Difference]: With dead ends: 886 [2024-11-22 11:43:17,212 INFO L226 Difference]: Without dead ends: 507 [2024-11-22 11:43:17,213 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-22 11:43:17,214 INFO L432 NwaCegarLoop]: 235 mSDtfsCounter, 137 mSDsluCounter, 449 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 684 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 11:43:17,215 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [137 Valid, 684 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 11:43:17,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 507 states. [2024-11-22 11:43:17,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 507 to 504. [2024-11-22 11:43:17,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 504 states, 400 states have (on average 1.5375) internal successors, (615), 401 states have internal predecessors, (615), 99 states have call successors, (99), 4 states have call predecessors, (99), 4 states have return successors, (99), 98 states have call predecessors, (99), 99 states have call successors, (99) [2024-11-22 11:43:17,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 504 states to 504 states and 813 transitions. [2024-11-22 11:43:17,250 INFO L78 Accepts]: Start accepts. Automaton has 504 states and 813 transitions. Word has length 263 [2024-11-22 11:43:17,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 11:43:17,252 INFO L471 AbstractCegarLoop]: Abstraction has 504 states and 813 transitions. [2024-11-22 11:43:17,252 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 1 states have call successors, (39), 1 states have call predecessors, (39), 1 states have return successors, (39), 1 states have call predecessors, (39), 1 states have call successors, (39) [2024-11-22 11:43:17,252 INFO L276 IsEmpty]: Start isEmpty. Operand 504 states and 813 transitions. [2024-11-22 11:43:17,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2024-11-22 11:43:17,254 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 11:43:17,254 INFO L215 NwaCegarLoop]: trace histogram [39, 39, 39, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 11:43:17,254 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-22 11:43:17,254 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 11:43:17,255 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 11:43:17,255 INFO L85 PathProgramCache]: Analyzing trace with hash 1077042734, now seen corresponding path program 1 times [2024-11-22 11:43:17,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 11:43:17,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871950563] [2024-11-22 11:43:17,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:43:17,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 11:43:17,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:43:23,813 INFO L134 CoverageAnalysis]: Checked inductivity of 2964 backedges. 18 proven. 96 refuted. 0 times theorem prover too weak. 2850 trivial. 0 not checked. [2024-11-22 11:43:23,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 11:43:23,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871950563] [2024-11-22 11:43:23,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [871950563] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 11:43:23,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [266091104] [2024-11-22 11:43:23,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:43:23,817 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 11:43:23,818 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 11:43:23,819 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 11:43:23,821 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-22 11:43:23,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:43:23,984 INFO L255 TraceCheckSpWp]: Trace formula consists of 659 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-22 11:43:23,992 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 11:43:24,209 INFO L134 CoverageAnalysis]: Checked inductivity of 2964 backedges. 1508 proven. 51 refuted. 0 times theorem prover too weak. 1405 trivial. 0 not checked. [2024-11-22 11:43:24,210 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 11:43:24,466 INFO L134 CoverageAnalysis]: Checked inductivity of 2964 backedges. 63 proven. 51 refuted. 0 times theorem prover too weak. 2850 trivial. 0 not checked. [2024-11-22 11:43:24,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [266091104] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 11:43:24,466 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 11:43:24,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 5, 5] total 15 [2024-11-22 11:43:24,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884516467] [2024-11-22 11:43:24,467 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 11:43:24,468 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-22 11:43:24,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 11:43:24,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-22 11:43:24,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2024-11-22 11:43:24,470 INFO L87 Difference]: Start difference. First operand 504 states and 813 transitions. Second operand has 15 states, 15 states have (on average 8.466666666666667) internal successors, (127), 15 states have internal predecessors, (127), 4 states have call successors, (95), 2 states have call predecessors, (95), 4 states have return successors, (96), 4 states have call predecessors, (96), 4 states have call successors, (96) [2024-11-22 11:43:31,924 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-22 11:43:35,936 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-22 11:43:36,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 11:43:36,809 INFO L93 Difference]: Finished difference Result 1204 states and 1918 transitions. [2024-11-22 11:43:36,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-11-22 11:43:36,810 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 8.466666666666667) internal successors, (127), 15 states have internal predecessors, (127), 4 states have call successors, (95), 2 states have call predecessors, (95), 4 states have return successors, (96), 4 states have call predecessors, (96), 4 states have call successors, (96) Word has length 263 [2024-11-22 11:43:36,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 11:43:36,813 INFO L225 Difference]: With dead ends: 1204 [2024-11-22 11:43:36,814 INFO L226 Difference]: Without dead ends: 703 [2024-11-22 11:43:36,815 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 566 GetRequests, 527 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 274 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=362, Invalid=1198, Unknown=0, NotChecked=0, Total=1560 [2024-11-22 11:43:36,816 INFO L432 NwaCegarLoop]: 249 mSDtfsCounter, 2297 mSDsluCounter, 1499 mSDsCounter, 0 mSdLazyCounter, 1852 mSolverCounterSat, 354 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2318 SdHoareTripleChecker+Valid, 1748 SdHoareTripleChecker+Invalid, 2208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 354 IncrementalHoareTripleChecker+Valid, 1852 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.4s IncrementalHoareTripleChecker+Time [2024-11-22 11:43:36,817 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2318 Valid, 1748 Invalid, 2208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [354 Valid, 1852 Invalid, 2 Unknown, 0 Unchecked, 10.4s Time] [2024-11-22 11:43:36,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 703 states. [2024-11-22 11:43:36,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 703 to 364. [2024-11-22 11:43:36,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 364 states, 279 states have (on average 1.4838709677419355) internal successors, (414), 279 states have internal predecessors, (414), 78 states have call successors, (78), 6 states have call predecessors, (78), 6 states have return successors, (78), 78 states have call predecessors, (78), 78 states have call successors, (78) [2024-11-22 11:43:36,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 570 transitions. [2024-11-22 11:43:36,852 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 570 transitions. Word has length 263 [2024-11-22 11:43:36,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 11:43:36,853 INFO L471 AbstractCegarLoop]: Abstraction has 364 states and 570 transitions. [2024-11-22 11:43:36,854 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 8.466666666666667) internal successors, (127), 15 states have internal predecessors, (127), 4 states have call successors, (95), 2 states have call predecessors, (95), 4 states have return successors, (96), 4 states have call predecessors, (96), 4 states have call successors, (96) [2024-11-22 11:43:36,854 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 570 transitions. [2024-11-22 11:43:36,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2024-11-22 11:43:36,857 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 11:43:36,857 INFO L215 NwaCegarLoop]: trace histogram [39, 39, 39, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 11:43:36,866 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-22 11:43:37,057 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,SelfDestructingSolverStorable5 [2024-11-22 11:43:37,058 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 11:43:37,058 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 11:43:37,058 INFO L85 PathProgramCache]: Analyzing trace with hash 1333089599, now seen corresponding path program 1 times [2024-11-22 11:43:37,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 11:43:37,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978239776] [2024-11-22 11:43:37,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:43:37,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 11:43:37,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:43:37,387 INFO L134 CoverageAnalysis]: Checked inductivity of 2964 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2964 trivial. 0 not checked. [2024-11-22 11:43:37,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 11:43:37,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978239776] [2024-11-22 11:43:37,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [978239776] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 11:43:37,388 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 11:43:37,388 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 11:43:37,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284175433] [2024-11-22 11:43:37,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 11:43:37,388 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 11:43:37,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 11:43:37,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 11:43:37,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 11:43:37,390 INFO L87 Difference]: Start difference. First operand 364 states and 570 transitions. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 1 states have call successors, (39), 1 states have call predecessors, (39), 1 states have return successors, (39), 1 states have call predecessors, (39), 1 states have call successors, (39) [2024-11-22 11:43:37,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 11:43:37,578 INFO L93 Difference]: Finished difference Result 586 states and 921 transitions. [2024-11-22 11:43:37,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 11:43:37,580 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 1 states have call successors, (39), 1 states have call predecessors, (39), 1 states have return successors, (39), 1 states have call predecessors, (39), 1 states have call successors, (39) Word has length 263 [2024-11-22 11:43:37,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 11:43:37,582 INFO L225 Difference]: With dead ends: 586 [2024-11-22 11:43:37,582 INFO L226 Difference]: Without dead ends: 357 [2024-11-22 11:43:37,582 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-22 11:43:37,583 INFO L432 NwaCegarLoop]: 226 mSDtfsCounter, 184 mSDsluCounter, 435 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 118 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 184 SdHoareTripleChecker+Valid, 661 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 118 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-22 11:43:37,584 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [184 Valid, 661 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [118 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-22 11:43:37,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 357 states. [2024-11-22 11:43:37,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 357 to 345. [2024-11-22 11:43:37,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 345 states, 260 states have (on average 1.4653846153846153) internal successors, (381), 260 states have internal predecessors, (381), 78 states have call successors, (78), 6 states have call predecessors, (78), 6 states have return successors, (78), 78 states have call predecessors, (78), 78 states have call successors, (78) [2024-11-22 11:43:37,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 537 transitions. [2024-11-22 11:43:37,614 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 537 transitions. Word has length 263 [2024-11-22 11:43:37,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 11:43:37,615 INFO L471 AbstractCegarLoop]: Abstraction has 345 states and 537 transitions. [2024-11-22 11:43:37,615 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 1 states have call successors, (39), 1 states have call predecessors, (39), 1 states have return successors, (39), 1 states have call predecessors, (39), 1 states have call successors, (39) [2024-11-22 11:43:37,615 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 537 transitions. [2024-11-22 11:43:37,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2024-11-22 11:43:37,617 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 11:43:37,618 INFO L215 NwaCegarLoop]: trace histogram [39, 39, 39, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 11:43:37,618 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-22 11:43:37,618 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 11:43:37,619 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 11:43:37,619 INFO L85 PathProgramCache]: Analyzing trace with hash -1193063430, now seen corresponding path program 1 times [2024-11-22 11:43:37,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 11:43:37,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995788768] [2024-11-22 11:43:37,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:43:37,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 11:43:37,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:43:37,891 INFO L134 CoverageAnalysis]: Checked inductivity of 2964 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2964 trivial. 0 not checked. [2024-11-22 11:43:37,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 11:43:37,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995788768] [2024-11-22 11:43:37,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [995788768] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 11:43:37,891 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 11:43:37,891 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 11:43:37,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946157905] [2024-11-22 11:43:37,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 11:43:37,892 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 11:43:37,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 11:43:37,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 11:43:37,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 11:43:37,892 INFO L87 Difference]: Start difference. First operand 345 states and 537 transitions. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 1 states have call successors, (39), 1 states have call predecessors, (39), 1 states have return successors, (39), 1 states have call predecessors, (39), 1 states have call successors, (39) [2024-11-22 11:43:38,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 11:43:38,085 INFO L93 Difference]: Finished difference Result 785 states and 1237 transitions. [2024-11-22 11:43:38,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 11:43:38,086 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 1 states have call successors, (39), 1 states have call predecessors, (39), 1 states have return successors, (39), 1 states have call predecessors, (39), 1 states have call successors, (39) Word has length 265 [2024-11-22 11:43:38,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 11:43:38,089 INFO L225 Difference]: With dead ends: 785 [2024-11-22 11:43:38,089 INFO L226 Difference]: Without dead ends: 573 [2024-11-22 11:43:38,090 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-22 11:43:38,092 INFO L432 NwaCegarLoop]: 224 mSDtfsCounter, 353 mSDsluCounter, 443 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 353 SdHoareTripleChecker+Valid, 667 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 11:43:38,092 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [353 Valid, 667 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 11:43:38,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 573 states. [2024-11-22 11:43:38,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 573 to 512. [2024-11-22 11:43:38,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 512 states, 386 states have (on average 1.455958549222798) internal successors, (562), 386 states have internal predecessors, (562), 117 states have call successors, (117), 8 states have call predecessors, (117), 8 states have return successors, (117), 117 states have call predecessors, (117), 117 states have call successors, (117) [2024-11-22 11:43:38,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 512 states to 512 states and 796 transitions. [2024-11-22 11:43:38,133 INFO L78 Accepts]: Start accepts. Automaton has 512 states and 796 transitions. Word has length 265 [2024-11-22 11:43:38,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 11:43:38,134 INFO L471 AbstractCegarLoop]: Abstraction has 512 states and 796 transitions. [2024-11-22 11:43:38,134 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 1 states have call successors, (39), 1 states have call predecessors, (39), 1 states have return successors, (39), 1 states have call predecessors, (39), 1 states have call successors, (39) [2024-11-22 11:43:38,134 INFO L276 IsEmpty]: Start isEmpty. Operand 512 states and 796 transitions. [2024-11-22 11:43:38,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2024-11-22 11:43:38,136 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 11:43:38,136 INFO L215 NwaCegarLoop]: trace histogram [39, 39, 39, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 11:43:38,137 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-22 11:43:38,137 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 11:43:38,137 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 11:43:38,139 INFO L85 PathProgramCache]: Analyzing trace with hash 153526590, now seen corresponding path program 1 times [2024-11-22 11:43:38,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 11:43:38,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770209565] [2024-11-22 11:43:38,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:43:38,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 11:43:38,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:43:38,381 INFO L134 CoverageAnalysis]: Checked inductivity of 2964 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2964 trivial. 0 not checked. [2024-11-22 11:43:38,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 11:43:38,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770209565] [2024-11-22 11:43:38,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [770209565] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 11:43:38,382 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 11:43:38,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 11:43:38,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985725036] [2024-11-22 11:43:38,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 11:43:38,383 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 11:43:38,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 11:43:38,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 11:43:38,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 11:43:38,384 INFO L87 Difference]: Start difference. First operand 512 states and 796 transitions. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 1 states have call successors, (39), 1 states have call predecessors, (39), 1 states have return successors, (39), 1 states have call predecessors, (39), 1 states have call successors, (39) [2024-11-22 11:43:38,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 11:43:38,599 INFO L93 Difference]: Finished difference Result 1281 states and 2010 transitions. [2024-11-22 11:43:38,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 11:43:38,603 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 1 states have call successors, (39), 1 states have call predecessors, (39), 1 states have return successors, (39), 1 states have call predecessors, (39), 1 states have call successors, (39) Word has length 265 [2024-11-22 11:43:38,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 11:43:38,610 INFO L225 Difference]: With dead ends: 1281 [2024-11-22 11:43:38,610 INFO L226 Difference]: Without dead ends: 884 [2024-11-22 11:43:38,611 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-22 11:43:38,611 INFO L432 NwaCegarLoop]: 225 mSDtfsCounter, 316 mSDsluCounter, 445 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 118 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 316 SdHoareTripleChecker+Valid, 670 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 118 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-22 11:43:38,612 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [316 Valid, 670 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [118 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-22 11:43:38,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 884 states. [2024-11-22 11:43:38,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 884 to 826. [2024-11-22 11:43:38,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 826 states, 618 states have (on average 1.4611650485436893) internal successors, (903), 618 states have internal predecessors, (903), 195 states have call successors, (195), 12 states have call predecessors, (195), 12 states have return successors, (195), 195 states have call predecessors, (195), 195 states have call successors, (195) [2024-11-22 11:43:38,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 826 states to 826 states and 1293 transitions. [2024-11-22 11:43:38,709 INFO L78 Accepts]: Start accepts. Automaton has 826 states and 1293 transitions. Word has length 265 [2024-11-22 11:43:38,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 11:43:38,710 INFO L471 AbstractCegarLoop]: Abstraction has 826 states and 1293 transitions. [2024-11-22 11:43:38,710 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 1 states have call successors, (39), 1 states have call predecessors, (39), 1 states have return successors, (39), 1 states have call predecessors, (39), 1 states have call successors, (39) [2024-11-22 11:43:38,710 INFO L276 IsEmpty]: Start isEmpty. Operand 826 states and 1293 transitions. [2024-11-22 11:43:38,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2024-11-22 11:43:38,712 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 11:43:38,712 INFO L215 NwaCegarLoop]: trace histogram [39, 39, 39, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 11:43:38,712 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-22 11:43:38,713 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 11:43:38,715 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 11:43:38,715 INFO L85 PathProgramCache]: Analyzing trace with hash -1830959838, now seen corresponding path program 1 times [2024-11-22 11:43:38,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 11:43:38,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904079724] [2024-11-22 11:43:38,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:43:38,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 11:43:39,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:43:39,933 INFO L134 CoverageAnalysis]: Checked inductivity of 2964 backedges. 102 proven. 222 refuted. 0 times theorem prover too weak. 2640 trivial. 0 not checked. [2024-11-22 11:43:39,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 11:43:39,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904079724] [2024-11-22 11:43:39,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1904079724] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 11:43:39,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1981888567] [2024-11-22 11:43:39,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:43:39,934 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 11:43:39,934 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 11:43:39,936 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 11:43:39,937 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-22 11:43:40,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:43:40,111 INFO L255 TraceCheckSpWp]: Trace formula consists of 662 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-22 11:43:40,116 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 11:43:41,167 INFO L134 CoverageAnalysis]: Checked inductivity of 2964 backedges. 1864 proven. 249 refuted. 0 times theorem prover too weak. 851 trivial. 0 not checked. [2024-11-22 11:43:41,167 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 11:43:41,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1981888567] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 11:43:41,651 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-22 11:43:41,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 12] total 16 [2024-11-22 11:43:41,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181903241] [2024-11-22 11:43:41,651 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-22 11:43:41,652 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-22 11:43:41,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 11:43:41,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-22 11:43:41,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=362, Unknown=0, NotChecked=0, Total=462 [2024-11-22 11:43:41,653 INFO L87 Difference]: Start difference. First operand 826 states and 1293 transitions. Second operand has 16 states, 15 states have (on average 7.933333333333334) internal successors, (119), 14 states have internal predecessors, (119), 7 states have call successors, (71), 4 states have call predecessors, (71), 6 states have return successors, (72), 7 states have call predecessors, (72), 7 states have call successors, (72) [2024-11-22 11:43:42,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 11:43:42,511 INFO L93 Difference]: Finished difference Result 1335 states and 2043 transitions. [2024-11-22 11:43:42,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-22 11:43:42,512 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 7.933333333333334) internal successors, (119), 14 states have internal predecessors, (119), 7 states have call successors, (71), 4 states have call predecessors, (71), 6 states have return successors, (72), 7 states have call predecessors, (72), 7 states have call successors, (72) Word has length 266 [2024-11-22 11:43:42,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 11:43:42,518 INFO L225 Difference]: With dead ends: 1335 [2024-11-22 11:43:42,518 INFO L226 Difference]: Without dead ends: 615 [2024-11-22 11:43:42,521 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 422 GetRequests, 389 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 228 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=294, Invalid=896, Unknown=0, NotChecked=0, Total=1190 [2024-11-22 11:43:42,522 INFO L432 NwaCegarLoop]: 220 mSDtfsCounter, 616 mSDsluCounter, 676 mSDsCounter, 0 mSdLazyCounter, 524 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 616 SdHoareTripleChecker+Valid, 896 SdHoareTripleChecker+Invalid, 639 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 524 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-22 11:43:42,522 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [616 Valid, 896 Invalid, 639 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 524 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-22 11:43:42,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 615 states. [2024-11-22 11:43:42,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 615 to 538. [2024-11-22 11:43:42,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 538 states, 400 states have (on average 1.3775) internal successors, (551), 400 states have internal predecessors, (551), 117 states have call successors, (117), 20 states have call predecessors, (117), 20 states have return successors, (117), 117 states have call predecessors, (117), 117 states have call successors, (117) [2024-11-22 11:43:42,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 538 states to 538 states and 785 transitions. [2024-11-22 11:43:42,571 INFO L78 Accepts]: Start accepts. Automaton has 538 states and 785 transitions. Word has length 266 [2024-11-22 11:43:42,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 11:43:42,572 INFO L471 AbstractCegarLoop]: Abstraction has 538 states and 785 transitions. [2024-11-22 11:43:42,572 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 7.933333333333334) internal successors, (119), 14 states have internal predecessors, (119), 7 states have call successors, (71), 4 states have call predecessors, (71), 6 states have return successors, (72), 7 states have call predecessors, (72), 7 states have call successors, (72) [2024-11-22 11:43:42,572 INFO L276 IsEmpty]: Start isEmpty. Operand 538 states and 785 transitions. [2024-11-22 11:43:42,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2024-11-22 11:43:42,574 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 11:43:42,574 INFO L215 NwaCegarLoop]: trace histogram [39, 39, 39, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 11:43:42,583 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-22 11:43:42,775 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 11:43:42,775 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 11:43:42,776 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 11:43:42,777 INFO L85 PathProgramCache]: Analyzing trace with hash -1734845566, now seen corresponding path program 1 times [2024-11-22 11:43:42,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 11:43:42,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315391247] [2024-11-22 11:43:42,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:43:42,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 11:43:43,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-22 11:43:43,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1265426702] [2024-11-22 11:43:43,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:43:43,417 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 11:43:43,417 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 11:43:43,419 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 11:43:43,420 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-22 11:43:43,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:43:43,726 INFO L255 TraceCheckSpWp]: Trace formula consists of 662 conjuncts, 52 conjuncts are in the unsatisfiable core [2024-11-22 11:43:43,732 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 11:43:46,294 INFO L134 CoverageAnalysis]: Checked inductivity of 2964 backedges. 1659 proven. 144 refuted. 0 times theorem prover too weak. 1161 trivial. 0 not checked. [2024-11-22 11:43:46,294 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 11:43:49,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 11:43:49,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315391247] [2024-11-22 11:43:49,365 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-22 11:43:49,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1265426702] [2024-11-22 11:43:49,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1265426702] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 11:43:49,366 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-22 11:43:49,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2024-11-22 11:43:49,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856017395] [2024-11-22 11:43:49,366 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-22 11:43:49,366 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-22 11:43:49,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 11:43:49,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-22 11:43:49,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=262, Invalid=794, Unknown=0, NotChecked=0, Total=1056 [2024-11-22 11:43:49,367 INFO L87 Difference]: Start difference. First operand 538 states and 785 transitions. Second operand has 25 states, 25 states have (on average 3.92) internal successors, (98), 22 states have internal predecessors, (98), 6 states have call successors, (39), 6 states have call predecessors, (39), 9 states have return successors, (39), 7 states have call predecessors, (39), 6 states have call successors, (39) [2024-11-22 11:43:52,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 11:43:52,104 INFO L93 Difference]: Finished difference Result 1197 states and 1727 transitions. [2024-11-22 11:43:52,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-11-22 11:43:52,104 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.92) internal successors, (98), 22 states have internal predecessors, (98), 6 states have call successors, (39), 6 states have call predecessors, (39), 9 states have return successors, (39), 7 states have call predecessors, (39), 6 states have call successors, (39) Word has length 266 [2024-11-22 11:43:52,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 11:43:52,108 INFO L225 Difference]: With dead ends: 1197 [2024-11-22 11:43:52,108 INFO L226 Difference]: Without dead ends: 799 [2024-11-22 11:43:52,110 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 343 GetRequests, 285 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 870 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=816, Invalid=2724, Unknown=0, NotChecked=0, Total=3540 [2024-11-22 11:43:52,111 INFO L432 NwaCegarLoop]: 207 mSDtfsCounter, 948 mSDsluCounter, 1677 mSDsCounter, 0 mSdLazyCounter, 1266 mSolverCounterSat, 168 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 948 SdHoareTripleChecker+Valid, 1884 SdHoareTripleChecker+Invalid, 1434 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 168 IncrementalHoareTripleChecker+Valid, 1266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-22 11:43:52,111 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [948 Valid, 1884 Invalid, 1434 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [168 Valid, 1266 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-22 11:43:52,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 799 states. [2024-11-22 11:43:52,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 799 to 729. [2024-11-22 11:43:52,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 729 states, 572 states have (on average 1.3898601398601398) internal successors, (795), 574 states have internal predecessors, (795), 129 states have call successors, (129), 27 states have call predecessors, (129), 27 states have return successors, (129), 127 states have call predecessors, (129), 129 states have call successors, (129) [2024-11-22 11:43:52,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 729 states to 729 states and 1053 transitions. [2024-11-22 11:43:52,194 INFO L78 Accepts]: Start accepts. Automaton has 729 states and 1053 transitions. Word has length 266 [2024-11-22 11:43:52,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 11:43:52,194 INFO L471 AbstractCegarLoop]: Abstraction has 729 states and 1053 transitions. [2024-11-22 11:43:52,195 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.92) internal successors, (98), 22 states have internal predecessors, (98), 6 states have call successors, (39), 6 states have call predecessors, (39), 9 states have return successors, (39), 7 states have call predecessors, (39), 6 states have call successors, (39) [2024-11-22 11:43:52,195 INFO L276 IsEmpty]: Start isEmpty. Operand 729 states and 1053 transitions. [2024-11-22 11:43:52,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2024-11-22 11:43:52,197 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 11:43:52,197 INFO L215 NwaCegarLoop]: trace histogram [39, 39, 39, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 11:43:52,207 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-22 11:43:52,399 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 11:43:52,400 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 11:43:52,400 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 11:43:52,400 INFO L85 PathProgramCache]: Analyzing trace with hash 188382468, now seen corresponding path program 1 times [2024-11-22 11:43:52,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 11:43:52,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909684522] [2024-11-22 11:43:52,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:43:52,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 11:43:52,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-22 11:43:52,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [855772722] [2024-11-22 11:43:52,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:43:52,870 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 11:43:52,870 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 11:43:52,872 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 11:43:52,873 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-22 11:43:53,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:43:53,153 INFO L255 TraceCheckSpWp]: Trace formula consists of 662 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-22 11:43:53,157 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 11:43:54,206 INFO L134 CoverageAnalysis]: Checked inductivity of 2964 backedges. 1266 proven. 168 refuted. 0 times theorem prover too weak. 1530 trivial. 0 not checked. [2024-11-22 11:43:54,206 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 11:43:54,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 11:43:54,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909684522] [2024-11-22 11:43:54,575 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-22 11:43:54,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [855772722] [2024-11-22 11:43:54,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [855772722] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 11:43:54,575 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-22 11:43:54,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2024-11-22 11:43:54,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697579526] [2024-11-22 11:43:54,575 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-22 11:43:54,576 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-22 11:43:54,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 11:43:54,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-22 11:43:54,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2024-11-22 11:43:54,577 INFO L87 Difference]: Start difference. First operand 729 states and 1053 transitions. Second operand has 12 states, 12 states have (on average 7.166666666666667) internal successors, (86), 11 states have internal predecessors, (86), 3 states have call successors, (39), 3 states have call predecessors, (39), 5 states have return successors, (39), 3 states have call predecessors, (39), 3 states have call successors, (39) [2024-11-22 11:43:55,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 11:43:55,976 INFO L93 Difference]: Finished difference Result 1227 states and 1763 transitions. [2024-11-22 11:43:55,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-22 11:43:55,977 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 7.166666666666667) internal successors, (86), 11 states have internal predecessors, (86), 3 states have call successors, (39), 3 states have call predecessors, (39), 5 states have return successors, (39), 3 states have call predecessors, (39), 3 states have call successors, (39) Word has length 266 [2024-11-22 11:43:55,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 11:43:55,984 INFO L225 Difference]: With dead ends: 1227 [2024-11-22 11:43:55,984 INFO L226 Difference]: Without dead ends: 827 [2024-11-22 11:43:55,985 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 327 GetRequests, 298 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=235, Invalid=695, Unknown=0, NotChecked=0, Total=930 [2024-11-22 11:43:55,986 INFO L432 NwaCegarLoop]: 186 mSDtfsCounter, 537 mSDsluCounter, 1411 mSDsCounter, 0 mSdLazyCounter, 774 mSolverCounterSat, 150 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 537 SdHoareTripleChecker+Valid, 1597 SdHoareTripleChecker+Invalid, 924 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 150 IncrementalHoareTripleChecker+Valid, 774 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-22 11:43:55,986 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [537 Valid, 1597 Invalid, 924 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [150 Valid, 774 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-22 11:43:55,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 827 states. [2024-11-22 11:43:56,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 827 to 678. [2024-11-22 11:43:56,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 678 states, 521 states have (on average 1.3742802303262955) internal successors, (716), 523 states have internal predecessors, (716), 129 states have call successors, (129), 27 states have call predecessors, (129), 27 states have return successors, (129), 127 states have call predecessors, (129), 129 states have call successors, (129) [2024-11-22 11:43:56,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 678 states to 678 states and 974 transitions. [2024-11-22 11:43:56,044 INFO L78 Accepts]: Start accepts. Automaton has 678 states and 974 transitions. Word has length 266 [2024-11-22 11:43:56,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 11:43:56,044 INFO L471 AbstractCegarLoop]: Abstraction has 678 states and 974 transitions. [2024-11-22 11:43:56,044 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.166666666666667) internal successors, (86), 11 states have internal predecessors, (86), 3 states have call successors, (39), 3 states have call predecessors, (39), 5 states have return successors, (39), 3 states have call predecessors, (39), 3 states have call successors, (39) [2024-11-22 11:43:56,044 INFO L276 IsEmpty]: Start isEmpty. Operand 678 states and 974 transitions. [2024-11-22 11:43:56,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2024-11-22 11:43:56,045 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 11:43:56,046 INFO L215 NwaCegarLoop]: trace histogram [39, 39, 39, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 11:43:56,055 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 11:43:56,246 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-22 11:43:56,246 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 11:43:56,247 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 11:43:56,247 INFO L85 PathProgramCache]: Analyzing trace with hash 2017978267, now seen corresponding path program 1 times [2024-11-22 11:43:56,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 11:43:56,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1828674774] [2024-11-22 11:43:56,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:43:56,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 11:43:56,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-22 11:43:56,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [143736285] [2024-11-22 11:43:56,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:43:56,708 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 11:43:56,708 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 11:43:56,710 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 11:43:56,711 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-22 11:43:57,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:43:57,036 INFO L255 TraceCheckSpWp]: Trace formula consists of 663 conjuncts, 85 conjuncts are in the unsatisfiable core [2024-11-22 11:43:57,041 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 11:44:02,396 INFO L134 CoverageAnalysis]: Checked inductivity of 2964 backedges. 1519 proven. 153 refuted. 0 times theorem prover too weak. 1292 trivial. 0 not checked. [2024-11-22 11:44:02,396 INFO L311 TraceCheckSpWp]: Computing backward predicates...