./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-67.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3061b6dc Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/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-67.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 6953ac45278a08a3cd7aa6bba766924b380e26c77e34faa3b5c408a0e5b4f283 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-18 23:46:17,831 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-18 23:46:17,919 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-18 23:46:17,926 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-18 23:46:17,928 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-18 23:46:17,969 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-18 23:46:17,970 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-18 23:46:17,970 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-18 23:46:17,971 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-18 23:46:17,972 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-18 23:46:17,973 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-18 23:46:17,973 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-18 23:46:17,974 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-18 23:46:17,974 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-18 23:46:17,976 INFO L153 SettingsManager]: * Use SBE=true [2024-11-18 23:46:17,977 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-18 23:46:17,977 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-18 23:46:17,977 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-18 23:46:17,977 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-18 23:46:17,978 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-18 23:46:17,978 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-18 23:46:17,978 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-18 23:46:17,979 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-18 23:46:17,979 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-18 23:46:17,979 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-18 23:46:17,980 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-18 23:46:17,980 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-18 23:46:17,980 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-18 23:46:17,981 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-18 23:46:17,981 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-18 23:46:17,981 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-18 23:46:17,981 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-18 23:46:17,982 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 23:46:17,982 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-18 23:46:17,982 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-18 23:46:17,982 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-18 23:46:17,983 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-18 23:46:17,983 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-18 23:46:17,983 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-18 23:46:17,983 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-18 23:46:17,983 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-18 23:46:17,984 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-18 23:46:17,985 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6953ac45278a08a3cd7aa6bba766924b380e26c77e34faa3b5c408a0e5b4f283 [2024-11-18 23:46:18,255 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-18 23:46:18,277 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-18 23:46:18,282 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-18 23:46:18,283 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-18 23:46:18,283 INFO L274 PluginConnector]: CDTParser initialized [2024-11-18 23:46:18,285 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-67.i [2024-11-18 23:46:19,825 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-18 23:46:20,093 INFO L384 CDTParser]: Found 1 translation units. [2024-11-18 23:46:20,093 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-67.i [2024-11-18 23:46:20,106 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ffaee25c4/db308654382a49cfb49775f9e3874c2f/FLAGb96edb780 [2024-11-18 23:46:20,121 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ffaee25c4/db308654382a49cfb49775f9e3874c2f [2024-11-18 23:46:20,124 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-18 23:46:20,129 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-18 23:46:20,135 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-18 23:46:20,135 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-18 23:46:20,141 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-18 23:46:20,142 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 11:46:20" (1/1) ... [2024-11-18 23:46:20,143 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59a5fb5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:46:20, skipping insertion in model container [2024-11-18 23:46:20,145 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 11:46:20" (1/1) ... [2024-11-18 23:46:20,199 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-18 23:46:20,375 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-67.i[916,929] [2024-11-18 23:46:20,522 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 23:46:20,541 INFO L200 MainTranslator]: Completed pre-run [2024-11-18 23:46:20,555 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-67.i[916,929] [2024-11-18 23:46:20,640 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 23:46:20,668 INFO L204 MainTranslator]: Completed translation [2024-11-18 23:46:20,668 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:46:20 WrapperNode [2024-11-18 23:46:20,669 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-18 23:46:20,670 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-18 23:46:20,670 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-18 23:46:20,670 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-18 23:46:20,677 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:46:20" (1/1) ... [2024-11-18 23:46:20,694 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:46:20" (1/1) ... [2024-11-18 23:46:20,753 INFO L138 Inliner]: procedures = 26, calls = 65, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 543 [2024-11-18 23:46:20,754 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-18 23:46:20,755 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-18 23:46:20,755 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-18 23:46:20,755 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-18 23:46:20,771 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:46:20" (1/1) ... [2024-11-18 23:46:20,772 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:46:20" (1/1) ... [2024-11-18 23:46:20,787 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:46:20" (1/1) ... [2024-11-18 23:46:20,836 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]. [2024-11-18 23:46:20,836 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:46:20" (1/1) ... [2024-11-18 23:46:20,836 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:46:20" (1/1) ... [2024-11-18 23:46:20,863 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:46:20" (1/1) ... [2024-11-18 23:46:20,869 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:46:20" (1/1) ... [2024-11-18 23:46:20,878 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:46:20" (1/1) ... [2024-11-18 23:46:20,889 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:46:20" (1/1) ... [2024-11-18 23:46:20,899 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-18 23:46:20,900 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-18 23:46:20,902 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-18 23:46:20,902 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-18 23:46:20,903 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:46:20" (1/1) ... [2024-11-18 23:46:20,909 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 23:46:20,921 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 23:46:20,939 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) [2024-11-18 23:46:20,942 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 [2024-11-18 23:46:20,997 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-18 23:46:20,997 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-18 23:46:20,998 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-18 23:46:20,998 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-18 23:46:20,998 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-18 23:46:20,998 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-18 23:46:21,119 INFO L238 CfgBuilder]: Building ICFG [2024-11-18 23:46:21,121 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-18 23:46:22,125 INFO L? ?]: Removed 62 outVars from TransFormulas that were not future-live. [2024-11-18 23:46:22,125 INFO L287 CfgBuilder]: Performing block encoding [2024-11-18 23:46:22,152 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-18 23:46:22,154 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-18 23:46:22,155 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 11:46:22 BoogieIcfgContainer [2024-11-18 23:46:22,155 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-18 23:46:22,157 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-18 23:46:22,158 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-18 23:46:22,162 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-18 23:46:22,162 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 11:46:20" (1/3) ... [2024-11-18 23:46:22,163 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47228107 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 11:46:22, skipping insertion in model container [2024-11-18 23:46:22,164 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:46:20" (2/3) ... [2024-11-18 23:46:22,164 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47228107 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 11:46:22, skipping insertion in model container [2024-11-18 23:46:22,165 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 11:46:22" (3/3) ... [2024-11-18 23:46:22,167 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount250_file-67.i [2024-11-18 23:46:22,186 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-18 23:46:22,187 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-18 23:46:22,271 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-18 23:46:22,280 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;@47fb5887, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-18 23:46:22,280 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-18 23:46:22,286 INFO L276 IsEmpty]: Start isEmpty. Operand has 215 states, 160 states have (on average 1.49375) internal successors, (239), 161 states have internal predecessors, (239), 52 states have call successors, (52), 1 states have call predecessors, (52), 1 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2024-11-18 23:46:22,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 351 [2024-11-18 23:46:22,308 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:46:22,310 INFO L215 NwaCegarLoop]: trace histogram [52, 52, 52, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 23:46:22,311 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:46:22,319 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:46:22,320 INFO L85 PathProgramCache]: Analyzing trace with hash 1206794047, now seen corresponding path program 1 times [2024-11-18 23:46:22,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:46:22,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [764497421] [2024-11-18 23:46:22,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:46:22,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:46:22,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:46:22,928 INFO L134 CoverageAnalysis]: Checked inductivity of 5304 backedges. 0 proven. 102 refuted. 0 times theorem prover too weak. 5202 trivial. 0 not checked. [2024-11-18 23:46:22,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:46:22,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [764497421] [2024-11-18 23:46:22,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [764497421] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 23:46:22,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [33381241] [2024-11-18 23:46:22,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:46:22,931 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 23:46:22,932 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 23:46:22,933 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) [2024-11-18 23:46:22,935 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-18 23:46:23,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:46:23,266 INFO L255 TraceCheckSpWp]: Trace formula consists of 835 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-18 23:46:23,305 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 23:46:23,373 INFO L134 CoverageAnalysis]: Checked inductivity of 5304 backedges. 102 proven. 0 refuted. 0 times theorem prover too weak. 5202 trivial. 0 not checked. [2024-11-18 23:46:23,374 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 23:46:23,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [33381241] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:46:23,375 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 23:46:23,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-18 23:46:23,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015315593] [2024-11-18 23:46:23,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:46:23,381 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-18 23:46:23,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:46:23,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-18 23:46:23,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-18 23:46:23,411 INFO L87 Difference]: Start difference. First operand has 215 states, 160 states have (on average 1.49375) internal successors, (239), 161 states have internal predecessors, (239), 52 states have call successors, (52), 1 states have call predecessors, (52), 1 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) Second operand has 2 states, 2 states have (on average 47.5) internal successors, (95), 2 states have internal predecessors, (95), 2 states have call successors, (52), 2 states have call predecessors, (52), 1 states have return successors, (52), 1 states have call predecessors, (52), 2 states have call successors, (52) [2024-11-18 23:46:23,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:46:23,468 INFO L93 Difference]: Finished difference Result 419 states and 726 transitions. [2024-11-18 23:46:23,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-18 23:46:23,474 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 47.5) internal successors, (95), 2 states have internal predecessors, (95), 2 states have call successors, (52), 2 states have call predecessors, (52), 1 states have return successors, (52), 1 states have call predecessors, (52), 2 states have call successors, (52) Word has length 350 [2024-11-18 23:46:23,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:46:23,486 INFO L225 Difference]: With dead ends: 419 [2024-11-18 23:46:23,486 INFO L226 Difference]: Without dead ends: 207 [2024-11-18 23:46:23,495 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 351 GetRequests, 351 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-18 23:46:23,498 INFO L432 NwaCegarLoop]: 327 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, 327 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 [2024-11-18 23:46:23,501 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 327 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 23:46:23,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2024-11-18 23:46:23,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 207. [2024-11-18 23:46:23,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 153 states have (on average 1.457516339869281) internal successors, (223), 153 states have internal predecessors, (223), 52 states have call successors, (52), 1 states have call predecessors, (52), 1 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2024-11-18 23:46:23,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 327 transitions. [2024-11-18 23:46:23,572 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 327 transitions. Word has length 350 [2024-11-18 23:46:23,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:46:23,574 INFO L471 AbstractCegarLoop]: Abstraction has 207 states and 327 transitions. [2024-11-18 23:46:23,575 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 47.5) internal successors, (95), 2 states have internal predecessors, (95), 2 states have call successors, (52), 2 states have call predecessors, (52), 1 states have return successors, (52), 1 states have call predecessors, (52), 2 states have call successors, (52) [2024-11-18 23:46:23,575 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 327 transitions. [2024-11-18 23:46:23,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 351 [2024-11-18 23:46:23,584 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:46:23,585 INFO L215 NwaCegarLoop]: trace histogram [52, 52, 52, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 23:46:23,606 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-18 23:46:23,785 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 [2024-11-18 23:46:23,786 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:46:23,786 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:46:23,787 INFO L85 PathProgramCache]: Analyzing trace with hash -564097691, now seen corresponding path program 1 times [2024-11-18 23:46:23,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:46:23,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910775822] [2024-11-18 23:46:23,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:46:23,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:46:23,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:46:24,750 INFO L134 CoverageAnalysis]: Checked inductivity of 5304 backedges. 45 proven. 108 refuted. 0 times theorem prover too weak. 5151 trivial. 0 not checked. [2024-11-18 23:46:24,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:46:24,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910775822] [2024-11-18 23:46:24,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1910775822] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 23:46:24,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1007413382] [2024-11-18 23:46:24,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:46:24,755 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 23:46:24,755 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 23:46:24,757 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) [2024-11-18 23:46:24,758 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-18 23:46:25,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:46:25,056 INFO L255 TraceCheckSpWp]: Trace formula consists of 837 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-18 23:46:25,063 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 23:46:25,132 INFO L134 CoverageAnalysis]: Checked inductivity of 5304 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5304 trivial. 0 not checked. [2024-11-18 23:46:25,132 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 23:46:25,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1007413382] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:46:25,132 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 23:46:25,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2024-11-18 23:46:25,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268464806] [2024-11-18 23:46:25,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:46:25,134 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 23:46:25,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:46:25,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 23:46:25,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-11-18 23:46:25,136 INFO L87 Difference]: Start difference. First operand 207 states and 327 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 1 states have call successors, (52), 1 states have call predecessors, (52), 1 states have return successors, (52), 1 states have call predecessors, (52), 1 states have call successors, (52) [2024-11-18 23:46:25,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:46:25,241 INFO L93 Difference]: Finished difference Result 613 states and 971 transitions. [2024-11-18 23:46:25,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 23:46:25,242 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 1 states have call successors, (52), 1 states have call predecessors, (52), 1 states have return successors, (52), 1 states have call predecessors, (52), 1 states have call successors, (52) Word has length 350 [2024-11-18 23:46:25,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:46:25,250 INFO L225 Difference]: With dead ends: 613 [2024-11-18 23:46:25,250 INFO L226 Difference]: Without dead ends: 409 [2024-11-18 23:46:25,252 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 357 GetRequests, 350 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-11-18 23:46:25,254 INFO L432 NwaCegarLoop]: 635 mSDtfsCounter, 319 mSDsluCounter, 310 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 319 SdHoareTripleChecker+Valid, 945 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 23:46:25,255 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [319 Valid, 945 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 23:46:25,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 409 states. [2024-11-18 23:46:25,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 409 to 407. [2024-11-18 23:46:25,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 407 states, 300 states have (on average 1.4533333333333334) internal successors, (436), 300 states have internal predecessors, (436), 104 states have call successors, (104), 2 states have call predecessors, (104), 2 states have return successors, (104), 104 states have call predecessors, (104), 104 states have call successors, (104) [2024-11-18 23:46:25,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407 states to 407 states and 644 transitions. [2024-11-18 23:46:25,316 INFO L78 Accepts]: Start accepts. Automaton has 407 states and 644 transitions. Word has length 350 [2024-11-18 23:46:25,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:46:25,317 INFO L471 AbstractCegarLoop]: Abstraction has 407 states and 644 transitions. [2024-11-18 23:46:25,318 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 1 states have call successors, (52), 1 states have call predecessors, (52), 1 states have return successors, (52), 1 states have call predecessors, (52), 1 states have call successors, (52) [2024-11-18 23:46:25,318 INFO L276 IsEmpty]: Start isEmpty. Operand 407 states and 644 transitions. [2024-11-18 23:46:25,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 352 [2024-11-18 23:46:25,324 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:46:25,324 INFO L215 NwaCegarLoop]: trace histogram [52, 52, 52, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 23:46:25,345 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-18 23:46:25,528 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,SelfDestructingSolverStorable1 [2024-11-18 23:46:25,529 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:46:25,530 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:46:25,530 INFO L85 PathProgramCache]: Analyzing trace with hash 1065189670, now seen corresponding path program 1 times [2024-11-18 23:46:25,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:46:25,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1999583235] [2024-11-18 23:46:25,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:46:25,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:46:25,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:46:26,258 INFO L134 CoverageAnalysis]: Checked inductivity of 5304 backedges. 45 proven. 108 refuted. 0 times theorem prover too weak. 5151 trivial. 0 not checked. [2024-11-18 23:46:26,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:46:26,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1999583235] [2024-11-18 23:46:26,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1999583235] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 23:46:26,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1100800984] [2024-11-18 23:46:26,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:46:26,263 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 23:46:26,263 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 23:46:26,265 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) [2024-11-18 23:46:26,267 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-18 23:46:26,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:46:26,519 INFO L255 TraceCheckSpWp]: Trace formula consists of 837 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-18 23:46:26,527 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 23:46:27,540 INFO L134 CoverageAnalysis]: Checked inductivity of 5304 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5304 trivial. 0 not checked. [2024-11-18 23:46:27,541 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 23:46:27,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1100800984] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:46:27,541 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 23:46:27,542 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 11 [2024-11-18 23:46:27,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91355953] [2024-11-18 23:46:27,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:46:27,543 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 23:46:27,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:46:27,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 23:46:27,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-11-18 23:46:27,544 INFO L87 Difference]: Start difference. First operand 407 states and 644 transitions. Second operand has 5 states, 5 states have (on average 18.8) internal successors, (94), 4 states have internal predecessors, (94), 1 states have call successors, (52), 1 states have call predecessors, (52), 1 states have return successors, (52), 1 states have call predecessors, (52), 1 states have call successors, (52) [2024-11-18 23:46:27,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:46:27,993 INFO L93 Difference]: Finished difference Result 1359 states and 2147 transitions. [2024-11-18 23:46:27,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 23:46:27,994 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.8) internal successors, (94), 4 states have internal predecessors, (94), 1 states have call successors, (52), 1 states have call predecessors, (52), 1 states have return successors, (52), 1 states have call predecessors, (52), 1 states have call successors, (52) Word has length 351 [2024-11-18 23:46:27,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:46:28,001 INFO L225 Difference]: With dead ends: 1359 [2024-11-18 23:46:28,001 INFO L226 Difference]: Without dead ends: 955 [2024-11-18 23:46:28,002 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 360 GetRequests, 349 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2024-11-18 23:46:28,003 INFO L432 NwaCegarLoop]: 296 mSDtfsCounter, 505 mSDsluCounter, 786 mSDsCounter, 0 mSdLazyCounter, 230 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 505 SdHoareTripleChecker+Valid, 1082 SdHoareTripleChecker+Invalid, 337 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 230 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-18 23:46:28,003 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [505 Valid, 1082 Invalid, 337 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 230 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-18 23:46:28,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 955 states. [2024-11-18 23:46:28,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 955 to 809. [2024-11-18 23:46:28,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 809 states, 596 states have (on average 1.4530201342281879) internal successors, (866), 596 states have internal predecessors, (866), 208 states have call successors, (208), 4 states have call predecessors, (208), 4 states have return successors, (208), 208 states have call predecessors, (208), 208 states have call successors, (208) [2024-11-18 23:46:28,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 809 states to 809 states and 1282 transitions. [2024-11-18 23:46:28,136 INFO L78 Accepts]: Start accepts. Automaton has 809 states and 1282 transitions. Word has length 351 [2024-11-18 23:46:28,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:46:28,137 INFO L471 AbstractCegarLoop]: Abstraction has 809 states and 1282 transitions. [2024-11-18 23:46:28,138 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.8) internal successors, (94), 4 states have internal predecessors, (94), 1 states have call successors, (52), 1 states have call predecessors, (52), 1 states have return successors, (52), 1 states have call predecessors, (52), 1 states have call successors, (52) [2024-11-18 23:46:28,138 INFO L276 IsEmpty]: Start isEmpty. Operand 809 states and 1282 transitions. [2024-11-18 23:46:28,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 353 [2024-11-18 23:46:28,143 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:46:28,143 INFO L215 NwaCegarLoop]: trace histogram [52, 52, 52, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 23:46:28,161 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-18 23:46:28,343 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 23:46:28,344 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:46:28,345 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:46:28,345 INFO L85 PathProgramCache]: Analyzing trace with hash -1777684919, now seen corresponding path program 1 times [2024-11-18 23:46:28,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:46:28,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639569466] [2024-11-18 23:46:28,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:46:28,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:46:28,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:46:29,684 INFO L134 CoverageAnalysis]: Checked inductivity of 5304 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5304 trivial. 0 not checked. [2024-11-18 23:46:29,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:46:29,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639569466] [2024-11-18 23:46:29,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1639569466] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:46:29,685 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 23:46:29,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-18 23:46:29,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810220344] [2024-11-18 23:46:29,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:46:29,686 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-18 23:46:29,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:46:29,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-18 23:46:29,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-11-18 23:46:29,689 INFO L87 Difference]: Start difference. First operand 809 states and 1282 transitions. Second operand has 11 states, 11 states have (on average 8.636363636363637) internal successors, (95), 11 states have internal predecessors, (95), 1 states have call successors, (52), 1 states have call predecessors, (52), 1 states have return successors, (52), 1 states have call predecessors, (52), 1 states have call successors, (52) [2024-11-18 23:46:31,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:46:31,474 INFO L93 Difference]: Finished difference Result 3800 states and 5950 transitions. [2024-11-18 23:46:31,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-18 23:46:31,475 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.636363636363637) internal successors, (95), 11 states have internal predecessors, (95), 1 states have call successors, (52), 1 states have call predecessors, (52), 1 states have return successors, (52), 1 states have call predecessors, (52), 1 states have call successors, (52) Word has length 352 [2024-11-18 23:46:31,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:46:31,491 INFO L225 Difference]: With dead ends: 3800 [2024-11-18 23:46:31,491 INFO L226 Difference]: Without dead ends: 2994 [2024-11-18 23:46:31,494 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=94, Invalid=286, Unknown=0, NotChecked=0, Total=380 [2024-11-18 23:46:31,496 INFO L432 NwaCegarLoop]: 483 mSDtfsCounter, 1352 mSDsluCounter, 2598 mSDsCounter, 0 mSdLazyCounter, 963 mSolverCounterSat, 165 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1352 SdHoareTripleChecker+Valid, 3081 SdHoareTripleChecker+Invalid, 1128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 165 IncrementalHoareTripleChecker+Valid, 963 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-18 23:46:31,497 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1352 Valid, 3081 Invalid, 1128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [165 Valid, 963 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-18 23:46:31,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2994 states. [2024-11-18 23:46:31,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2994 to 1877. [2024-11-18 23:46:31,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1877 states, 1452 states have (on average 1.4986225895316805) internal successors, (2176), 1452 states have internal predecessors, (2176), 416 states have call successors, (416), 8 states have call predecessors, (416), 8 states have return successors, (416), 416 states have call predecessors, (416), 416 states have call successors, (416) [2024-11-18 23:46:31,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1877 states to 1877 states and 3008 transitions. [2024-11-18 23:46:31,688 INFO L78 Accepts]: Start accepts. Automaton has 1877 states and 3008 transitions. Word has length 352 [2024-11-18 23:46:31,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:46:31,691 INFO L471 AbstractCegarLoop]: Abstraction has 1877 states and 3008 transitions. [2024-11-18 23:46:31,691 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.636363636363637) internal successors, (95), 11 states have internal predecessors, (95), 1 states have call successors, (52), 1 states have call predecessors, (52), 1 states have return successors, (52), 1 states have call predecessors, (52), 1 states have call successors, (52) [2024-11-18 23:46:31,691 INFO L276 IsEmpty]: Start isEmpty. Operand 1877 states and 3008 transitions. [2024-11-18 23:46:31,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 354 [2024-11-18 23:46:31,697 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:46:31,698 INFO L215 NwaCegarLoop]: trace histogram [52, 52, 52, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 23:46:31,698 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-18 23:46:31,699 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:46:31,699 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:46:31,700 INFO L85 PathProgramCache]: Analyzing trace with hash -64158396, now seen corresponding path program 1 times [2024-11-18 23:46:31,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:46:31,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1915521132] [2024-11-18 23:46:31,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:46:31,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:46:31,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:46:32,088 INFO L134 CoverageAnalysis]: Checked inductivity of 5304 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5304 trivial. 0 not checked. [2024-11-18 23:46:32,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:46:32,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1915521132] [2024-11-18 23:46:32,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1915521132] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:46:32,089 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 23:46:32,089 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 23:46:32,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809969409] [2024-11-18 23:46:32,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:46:32,091 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 23:46:32,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:46:32,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 23:46:32,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 23:46:32,092 INFO L87 Difference]: Start difference. First operand 1877 states and 3008 transitions. Second operand has 5 states, 5 states have (on average 19.2) internal successors, (96), 5 states have internal predecessors, (96), 1 states have call successors, (52), 1 states have call predecessors, (52), 1 states have return successors, (52), 1 states have call predecessors, (52), 1 states have call successors, (52) [2024-11-18 23:46:32,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:46:32,869 INFO L93 Difference]: Finished difference Result 5705 states and 9106 transitions. [2024-11-18 23:46:32,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-18 23:46:32,871 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 5 states have internal predecessors, (96), 1 states have call successors, (52), 1 states have call predecessors, (52), 1 states have return successors, (52), 1 states have call predecessors, (52), 1 states have call successors, (52) Word has length 353 [2024-11-18 23:46:32,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:46:32,890 INFO L225 Difference]: With dead ends: 5705 [2024-11-18 23:46:32,890 INFO L226 Difference]: Without dead ends: 3831 [2024-11-18 23:46:32,896 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-18 23:46:32,896 INFO L432 NwaCegarLoop]: 484 mSDtfsCounter, 748 mSDsluCounter, 768 mSDsCounter, 0 mSdLazyCounter, 316 mSolverCounterSat, 262 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 748 SdHoareTripleChecker+Valid, 1252 SdHoareTripleChecker+Invalid, 578 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 262 IncrementalHoareTripleChecker+Valid, 316 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-18 23:46:32,897 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [748 Valid, 1252 Invalid, 578 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [262 Valid, 316 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-18 23:46:32,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3831 states. [2024-11-18 23:46:33,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3831 to 2769. [2024-11-18 23:46:33,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2769 states, 2132 states have (on average 1.4924953095684803) internal successors, (3182), 2132 states have internal predecessors, (3182), 624 states have call successors, (624), 12 states have call predecessors, (624), 12 states have return successors, (624), 624 states have call predecessors, (624), 624 states have call successors, (624) [2024-11-18 23:46:33,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2769 states to 2769 states and 4430 transitions. [2024-11-18 23:46:33,228 INFO L78 Accepts]: Start accepts. Automaton has 2769 states and 4430 transitions. Word has length 353 [2024-11-18 23:46:33,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:46:33,229 INFO L471 AbstractCegarLoop]: Abstraction has 2769 states and 4430 transitions. [2024-11-18 23:46:33,230 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 5 states have internal predecessors, (96), 1 states have call successors, (52), 1 states have call predecessors, (52), 1 states have return successors, (52), 1 states have call predecessors, (52), 1 states have call successors, (52) [2024-11-18 23:46:33,232 INFO L276 IsEmpty]: Start isEmpty. Operand 2769 states and 4430 transitions. [2024-11-18 23:46:33,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 354 [2024-11-18 23:46:33,260 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:46:33,260 INFO L215 NwaCegarLoop]: trace histogram [52, 52, 52, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 23:46:33,261 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-18 23:46:33,261 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:46:33,262 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:46:33,262 INFO L85 PathProgramCache]: Analyzing trace with hash 76390214, now seen corresponding path program 1 times [2024-11-18 23:46:33,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:46:33,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300756164] [2024-11-18 23:46:33,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:46:33,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:46:33,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:46:33,897 INFO L134 CoverageAnalysis]: Checked inductivity of 5304 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5304 trivial. 0 not checked. [2024-11-18 23:46:33,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:46:33,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300756164] [2024-11-18 23:46:33,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1300756164] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:46:33,898 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 23:46:33,898 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 23:46:33,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742776308] [2024-11-18 23:46:33,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:46:33,900 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 23:46:33,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:46:33,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 23:46:33,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-18 23:46:33,901 INFO L87 Difference]: Start difference. First operand 2769 states and 4430 transitions. Second operand has 5 states, 5 states have (on average 19.2) internal successors, (96), 5 states have internal predecessors, (96), 1 states have call successors, (52), 1 states have call predecessors, (52), 1 states have return successors, (52), 1 states have call predecessors, (52), 1 states have call successors, (52) [2024-11-18 23:46:34,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:46:34,708 INFO L93 Difference]: Finished difference Result 8189 states and 13092 transitions. [2024-11-18 23:46:34,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 23:46:34,709 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 5 states have internal predecessors, (96), 1 states have call successors, (52), 1 states have call predecessors, (52), 1 states have return successors, (52), 1 states have call predecessors, (52), 1 states have call successors, (52) Word has length 353 [2024-11-18 23:46:34,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:46:34,740 INFO L225 Difference]: With dead ends: 8189 [2024-11-18 23:46:34,741 INFO L226 Difference]: Without dead ends: 5423 [2024-11-18 23:46:34,750 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-18 23:46:34,752 INFO L432 NwaCegarLoop]: 519 mSDtfsCounter, 509 mSDsluCounter, 613 mSDsCounter, 0 mSdLazyCounter, 277 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 509 SdHoareTripleChecker+Valid, 1132 SdHoareTripleChecker+Invalid, 381 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-18 23:46:34,752 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [509 Valid, 1132 Invalid, 381 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 277 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-18 23:46:34,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5423 states. [2024-11-18 23:46:35,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5423 to 5421. [2024-11-18 23:46:35,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5421 states, 4148 states have (on average 1.4821600771456123) internal successors, (6148), 4148 states have internal predecessors, (6148), 1248 states have call successors, (1248), 24 states have call predecessors, (1248), 24 states have return successors, (1248), 1248 states have call predecessors, (1248), 1248 states have call successors, (1248) [2024-11-18 23:46:35,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5421 states to 5421 states and 8644 transitions. [2024-11-18 23:46:35,289 INFO L78 Accepts]: Start accepts. Automaton has 5421 states and 8644 transitions. Word has length 353 [2024-11-18 23:46:35,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:46:35,290 INFO L471 AbstractCegarLoop]: Abstraction has 5421 states and 8644 transitions. [2024-11-18 23:46:35,290 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 5 states have internal predecessors, (96), 1 states have call successors, (52), 1 states have call predecessors, (52), 1 states have return successors, (52), 1 states have call predecessors, (52), 1 states have call successors, (52) [2024-11-18 23:46:35,291 INFO L276 IsEmpty]: Start isEmpty. Operand 5421 states and 8644 transitions. [2024-11-18 23:46:35,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 354 [2024-11-18 23:46:35,296 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:46:35,296 INFO L215 NwaCegarLoop]: trace histogram [52, 52, 52, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 23:46:35,297 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-18 23:46:35,297 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:46:35,297 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:46:35,298 INFO L85 PathProgramCache]: Analyzing trace with hash -170654885, now seen corresponding path program 1 times [2024-11-18 23:46:35,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:46:35,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573772332] [2024-11-18 23:46:35,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:46:35,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:46:35,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:46:36,672 INFO L134 CoverageAnalysis]: Checked inductivity of 5304 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5304 trivial. 0 not checked. [2024-11-18 23:46:36,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:46:36,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573772332] [2024-11-18 23:46:36,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [573772332] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:46:36,673 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 23:46:36,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-18 23:46:36,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469798974] [2024-11-18 23:46:36,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:46:36,674 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-18 23:46:36,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:46:36,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-18 23:46:36,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-11-18 23:46:36,676 INFO L87 Difference]: Start difference. First operand 5421 states and 8644 transitions. Second operand has 10 states, 10 states have (on average 9.6) internal successors, (96), 10 states have internal predecessors, (96), 1 states have call successors, (52), 1 states have call predecessors, (52), 1 states have return successors, (52), 1 states have call predecessors, (52), 1 states have call successors, (52) [2024-11-18 23:46:38,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:46:38,902 INFO L93 Difference]: Finished difference Result 9500 states and 15016 transitions. [2024-11-18 23:46:38,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-18 23:46:38,903 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 9.6) internal successors, (96), 10 states have internal predecessors, (96), 1 states have call successors, (52), 1 states have call predecessors, (52), 1 states have return successors, (52), 1 states have call predecessors, (52), 1 states have call successors, (52) Word has length 353 [2024-11-18 23:46:38,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:46:38,945 INFO L225 Difference]: With dead ends: 9500 [2024-11-18 23:46:38,946 INFO L226 Difference]: Without dead ends: 7890 [2024-11-18 23:46:38,954 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2024-11-18 23:46:38,956 INFO L432 NwaCegarLoop]: 614 mSDtfsCounter, 1129 mSDsluCounter, 3205 mSDsCounter, 0 mSdLazyCounter, 1413 mSolverCounterSat, 161 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1129 SdHoareTripleChecker+Valid, 3819 SdHoareTripleChecker+Invalid, 1574 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 161 IncrementalHoareTripleChecker+Valid, 1413 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-18 23:46:38,956 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1129 Valid, 3819 Invalid, 1574 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [161 Valid, 1413 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-18 23:46:38,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7890 states. [2024-11-18 23:46:39,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7890 to 5745. [2024-11-18 23:46:39,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5745 states, 4472 states have (on average 1.4919499105545617) internal successors, (6672), 4472 states have internal predecessors, (6672), 1248 states have call successors, (1248), 24 states have call predecessors, (1248), 24 states have return successors, (1248), 1248 states have call predecessors, (1248), 1248 states have call successors, (1248) [2024-11-18 23:46:39,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5745 states to 5745 states and 9168 transitions. [2024-11-18 23:46:39,616 INFO L78 Accepts]: Start accepts. Automaton has 5745 states and 9168 transitions. Word has length 353 [2024-11-18 23:46:39,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:46:39,617 INFO L471 AbstractCegarLoop]: Abstraction has 5745 states and 9168 transitions. [2024-11-18 23:46:39,617 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.6) internal successors, (96), 10 states have internal predecessors, (96), 1 states have call successors, (52), 1 states have call predecessors, (52), 1 states have return successors, (52), 1 states have call predecessors, (52), 1 states have call successors, (52) [2024-11-18 23:46:39,618 INFO L276 IsEmpty]: Start isEmpty. Operand 5745 states and 9168 transitions. [2024-11-18 23:46:39,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 355 [2024-11-18 23:46:39,623 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:46:39,623 INFO L215 NwaCegarLoop]: trace histogram [52, 52, 52, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 23:46:39,623 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-18 23:46:39,624 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:46:39,624 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:46:39,624 INFO L85 PathProgramCache]: Analyzing trace with hash -971390230, now seen corresponding path program 1 times [2024-11-18 23:46:39,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:46:39,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128710634] [2024-11-18 23:46:39,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:46:39,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:46:39,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:46:39,785 INFO L134 CoverageAnalysis]: Checked inductivity of 5304 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5304 trivial. 0 not checked. [2024-11-18 23:46:39,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:46:39,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128710634] [2024-11-18 23:46:39,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2128710634] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:46:39,786 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 23:46:39,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 23:46:39,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179609305] [2024-11-18 23:46:39,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:46:39,787 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 23:46:39,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:46:39,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 23:46:39,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 23:46:39,791 INFO L87 Difference]: Start difference. First operand 5745 states and 9168 transitions. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 1 states have call successors, (52), 1 states have call predecessors, (52), 1 states have return successors, (52), 1 states have call predecessors, (52), 1 states have call successors, (52) [2024-11-18 23:46:40,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:46:40,095 INFO L93 Difference]: Finished difference Result 12902 states and 20557 transitions. [2024-11-18 23:46:40,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 23:46:40,096 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 1 states have call successors, (52), 1 states have call predecessors, (52), 1 states have return successors, (52), 1 states have call predecessors, (52), 1 states have call successors, (52) Word has length 354 [2024-11-18 23:46:40,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:46:40,145 INFO L225 Difference]: With dead ends: 12902 [2024-11-18 23:46:40,149 INFO L226 Difference]: Without dead ends: 7160 [2024-11-18 23:46:40,167 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 [2024-11-18 23:46:40,169 INFO L432 NwaCegarLoop]: 370 mSDtfsCounter, 168 mSDsluCounter, 312 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 682 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 23:46:40,170 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [168 Valid, 682 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 23:46:40,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7160 states. [2024-11-18 23:46:40,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7160 to 5801. [2024-11-18 23:46:40,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5801 states, 4528 states have (on average 1.4880742049469964) internal successors, (6738), 4528 states have internal predecessors, (6738), 1248 states have call successors, (1248), 24 states have call predecessors, (1248), 24 states have return successors, (1248), 1248 states have call predecessors, (1248), 1248 states have call successors, (1248) [2024-11-18 23:46:40,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5801 states to 5801 states and 9234 transitions. [2024-11-18 23:46:40,615 INFO L78 Accepts]: Start accepts. Automaton has 5801 states and 9234 transitions. Word has length 354 [2024-11-18 23:46:40,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:46:40,616 INFO L471 AbstractCegarLoop]: Abstraction has 5801 states and 9234 transitions. [2024-11-18 23:46:40,617 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 1 states have call successors, (52), 1 states have call predecessors, (52), 1 states have return successors, (52), 1 states have call predecessors, (52), 1 states have call successors, (52) [2024-11-18 23:46:40,618 INFO L276 IsEmpty]: Start isEmpty. Operand 5801 states and 9234 transitions. [2024-11-18 23:46:40,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 355 [2024-11-18 23:46:40,623 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:46:40,623 INFO L215 NwaCegarLoop]: trace histogram [52, 52, 52, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 23:46:40,623 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-18 23:46:40,623 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:46:40,624 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:46:40,624 INFO L85 PathProgramCache]: Analyzing trace with hash 1384415020, now seen corresponding path program 1 times [2024-11-18 23:46:40,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:46:40,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821755117] [2024-11-18 23:46:40,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:46:40,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:46:40,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:46:41,481 INFO L134 CoverageAnalysis]: Checked inductivity of 5304 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5304 trivial. 0 not checked. [2024-11-18 23:46:41,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:46:41,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821755117] [2024-11-18 23:46:41,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1821755117] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:46:41,483 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 23:46:41,483 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-18 23:46:41,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034888709] [2024-11-18 23:46:41,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:46:41,484 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-18 23:46:41,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:46:41,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-18 23:46:41,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-18 23:46:41,485 INFO L87 Difference]: Start difference. First operand 5801 states and 9234 transitions. Second operand has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 states have internal predecessors, (97), 1 states have call successors, (52), 1 states have call predecessors, (52), 1 states have return successors, (52), 1 states have call predecessors, (52), 1 states have call successors, (52) [2024-11-18 23:46:42,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:46:42,576 INFO L93 Difference]: Finished difference Result 14679 states and 23240 transitions. [2024-11-18 23:46:42,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-18 23:46:42,577 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 states have internal predecessors, (97), 1 states have call successors, (52), 1 states have call predecessors, (52), 1 states have return successors, (52), 1 states have call predecessors, (52), 1 states have call successors, (52) Word has length 354 [2024-11-18 23:46:42,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:46:42,609 INFO L225 Difference]: With dead ends: 14679 [2024-11-18 23:46:42,609 INFO L226 Difference]: Without dead ends: 8881 [2024-11-18 23:46:42,627 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-11-18 23:46:42,628 INFO L432 NwaCegarLoop]: 391 mSDtfsCounter, 479 mSDsluCounter, 1193 mSDsCounter, 0 mSdLazyCounter, 670 mSolverCounterSat, 159 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 479 SdHoareTripleChecker+Valid, 1584 SdHoareTripleChecker+Invalid, 829 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 159 IncrementalHoareTripleChecker+Valid, 670 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-18 23:46:42,629 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [479 Valid, 1584 Invalid, 829 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [159 Valid, 670 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-18 23:46:42,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8881 states. [2024-11-18 23:46:43,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8881 to 5928. [2024-11-18 23:46:43,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5928 states, 4602 states have (on average 1.4845719252498915) internal successors, (6832), 4602 states have internal predecessors, (6832), 1300 states have call successors, (1300), 25 states have call predecessors, (1300), 25 states have return successors, (1300), 1300 states have call predecessors, (1300), 1300 states have call successors, (1300) [2024-11-18 23:46:43,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5928 states to 5928 states and 9432 transitions. [2024-11-18 23:46:43,180 INFO L78 Accepts]: Start accepts. Automaton has 5928 states and 9432 transitions. Word has length 354 [2024-11-18 23:46:43,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:46:43,181 INFO L471 AbstractCegarLoop]: Abstraction has 5928 states and 9432 transitions. [2024-11-18 23:46:43,181 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 states have internal predecessors, (97), 1 states have call successors, (52), 1 states have call predecessors, (52), 1 states have return successors, (52), 1 states have call predecessors, (52), 1 states have call successors, (52) [2024-11-18 23:46:43,181 INFO L276 IsEmpty]: Start isEmpty. Operand 5928 states and 9432 transitions. [2024-11-18 23:46:43,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 355 [2024-11-18 23:46:43,188 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:46:43,189 INFO L215 NwaCegarLoop]: trace histogram [52, 52, 52, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 23:46:43,189 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-18 23:46:43,189 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:46:43,189 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:46:43,190 INFO L85 PathProgramCache]: Analyzing trace with hash 1137369921, now seen corresponding path program 1 times [2024-11-18 23:46:43,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:46:43,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350663644] [2024-11-18 23:46:43,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:46:43,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:46:43,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:46:45,157 INFO L134 CoverageAnalysis]: Checked inductivity of 5304 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5304 trivial. 0 not checked. [2024-11-18 23:46:45,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:46:45,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350663644] [2024-11-18 23:46:45,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [350663644] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:46:45,158 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 23:46:45,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-18 23:46:45,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64112390] [2024-11-18 23:46:45,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:46:45,160 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-18 23:46:45,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:46:45,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-18 23:46:45,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-11-18 23:46:45,161 INFO L87 Difference]: Start difference. First operand 5928 states and 9432 transitions. Second operand has 12 states, 12 states have (on average 8.083333333333334) internal successors, (97), 12 states have internal predecessors, (97), 1 states have call successors, (52), 1 states have call predecessors, (52), 1 states have return successors, (52), 1 states have call predecessors, (52), 1 states have call successors, (52) [2024-11-18 23:46:47,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:46:47,266 INFO L93 Difference]: Finished difference Result 13749 states and 21695 transitions. [2024-11-18 23:46:47,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-18 23:46:47,267 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 8.083333333333334) internal successors, (97), 12 states have internal predecessors, (97), 1 states have call successors, (52), 1 states have call predecessors, (52), 1 states have return successors, (52), 1 states have call predecessors, (52), 1 states have call successors, (52) Word has length 354 [2024-11-18 23:46:47,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:46:47,317 INFO L225 Difference]: With dead ends: 13749 [2024-11-18 23:46:47,317 INFO L226 Difference]: Without dead ends: 12083 [2024-11-18 23:46:47,329 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=87, Invalid=255, Unknown=0, NotChecked=0, Total=342 [2024-11-18 23:46:47,330 INFO L432 NwaCegarLoop]: 419 mSDtfsCounter, 1362 mSDsluCounter, 1597 mSDsCounter, 0 mSdLazyCounter, 1058 mSolverCounterSat, 165 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1362 SdHoareTripleChecker+Valid, 2016 SdHoareTripleChecker+Invalid, 1223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 165 IncrementalHoareTripleChecker+Valid, 1058 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-18 23:46:47,330 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1362 Valid, 2016 Invalid, 1223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [165 Valid, 1058 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-18 23:46:47,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12083 states. [2024-11-18 23:46:48,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12083 to 9563. [2024-11-18 23:46:48,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9563 states, 7389 states have (on average 1.47909053999188) internal successors, (10929), 7389 states have internal predecessors, (10929), 2132 states have call successors, (2132), 41 states have call predecessors, (2132), 41 states have return successors, (2132), 2132 states have call predecessors, (2132), 2132 states have call successors, (2132) [2024-11-18 23:46:48,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9563 states to 9563 states and 15193 transitions. [2024-11-18 23:46:48,371 INFO L78 Accepts]: Start accepts. Automaton has 9563 states and 15193 transitions. Word has length 354 [2024-11-18 23:46:48,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:46:48,372 INFO L471 AbstractCegarLoop]: Abstraction has 9563 states and 15193 transitions. [2024-11-18 23:46:48,372 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.083333333333334) internal successors, (97), 12 states have internal predecessors, (97), 1 states have call successors, (52), 1 states have call predecessors, (52), 1 states have return successors, (52), 1 states have call predecessors, (52), 1 states have call successors, (52) [2024-11-18 23:46:48,372 INFO L276 IsEmpty]: Start isEmpty. Operand 9563 states and 15193 transitions. [2024-11-18 23:46:48,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 355 [2024-11-18 23:46:48,381 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:46:48,381 INFO L215 NwaCegarLoop]: trace histogram [52, 52, 52, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 23:46:48,381 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-18 23:46:48,381 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:46:48,382 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:46:48,382 INFO L85 PathProgramCache]: Analyzing trace with hash 1277918531, now seen corresponding path program 1 times [2024-11-18 23:46:48,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:46:48,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345822097] [2024-11-18 23:46:48,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:46:48,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:46:48,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:46:49,648 INFO L134 CoverageAnalysis]: Checked inductivity of 5304 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5304 trivial. 0 not checked. [2024-11-18 23:46:49,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:46:49,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1345822097] [2024-11-18 23:46:49,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1345822097] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:46:49,648 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 23:46:49,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-18 23:46:49,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967262884] [2024-11-18 23:46:49,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:46:49,649 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-18 23:46:49,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:46:49,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-18 23:46:49,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-11-18 23:46:49,651 INFO L87 Difference]: Start difference. First operand 9563 states and 15193 transitions. Second operand has 10 states, 10 states have (on average 9.7) internal successors, (97), 10 states have internal predecessors, (97), 1 states have call successors, (52), 1 states have call predecessors, (52), 1 states have return successors, (52), 1 states have call predecessors, (52), 1 states have call successors, (52) [2024-11-18 23:46:51,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:46:51,471 INFO L93 Difference]: Finished difference Result 16723 states and 26242 transitions. [2024-11-18 23:46:51,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-18 23:46:51,472 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 9.7) internal successors, (97), 10 states have internal predecessors, (97), 1 states have call successors, (52), 1 states have call predecessors, (52), 1 states have return successors, (52), 1 states have call predecessors, (52), 1 states have call successors, (52) Word has length 354 [2024-11-18 23:46:51,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:46:51,521 INFO L225 Difference]: With dead ends: 16723 [2024-11-18 23:46:51,521 INFO L226 Difference]: Without dead ends: 15057 [2024-11-18 23:46:51,535 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=74, Invalid=198, Unknown=0, NotChecked=0, Total=272 [2024-11-18 23:46:51,536 INFO L432 NwaCegarLoop]: 316 mSDtfsCounter, 1562 mSDsluCounter, 1364 mSDsCounter, 0 mSdLazyCounter, 1038 mSolverCounterSat, 164 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1562 SdHoareTripleChecker+Valid, 1680 SdHoareTripleChecker+Invalid, 1202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 164 IncrementalHoareTripleChecker+Valid, 1038 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-18 23:46:51,536 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1562 Valid, 1680 Invalid, 1202 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [164 Valid, 1038 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-18 23:46:51,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15057 states. [2024-11-18 23:46:52,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15057 to 9562. [2024-11-18 23:46:52,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9562 states, 7388 states have (on average 1.4792907417433676) internal successors, (10929), 7388 states have internal predecessors, (10929), 2132 states have call successors, (2132), 41 states have call predecessors, (2132), 41 states have return successors, (2132), 2132 states have call predecessors, (2132), 2132 states have call successors, (2132) [2024-11-18 23:46:52,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9562 states to 9562 states and 15193 transitions. [2024-11-18 23:46:52,550 INFO L78 Accepts]: Start accepts. Automaton has 9562 states and 15193 transitions. Word has length 354 [2024-11-18 23:46:52,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:46:52,551 INFO L471 AbstractCegarLoop]: Abstraction has 9562 states and 15193 transitions. [2024-11-18 23:46:52,551 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.7) internal successors, (97), 10 states have internal predecessors, (97), 1 states have call successors, (52), 1 states have call predecessors, (52), 1 states have return successors, (52), 1 states have call predecessors, (52), 1 states have call successors, (52) [2024-11-18 23:46:52,551 INFO L276 IsEmpty]: Start isEmpty. Operand 9562 states and 15193 transitions. [2024-11-18 23:46:52,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 355 [2024-11-18 23:46:52,559 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:46:52,559 INFO L215 NwaCegarLoop]: trace histogram [52, 52, 52, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 23:46:52,560 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-18 23:46:52,560 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:46:52,560 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:46:52,561 INFO L85 PathProgramCache]: Analyzing trace with hash 1549608386, now seen corresponding path program 1 times [2024-11-18 23:46:52,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:46:52,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271934304] [2024-11-18 23:46:52,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:46:52,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:46:52,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:46:52,980 INFO L134 CoverageAnalysis]: Checked inductivity of 5304 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5304 trivial. 0 not checked. [2024-11-18 23:46:52,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:46:52,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [271934304] [2024-11-18 23:46:52,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [271934304] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:46:52,981 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 23:46:52,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 23:46:52,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208467969] [2024-11-18 23:46:52,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:46:52,982 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 23:46:52,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:46:52,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 23:46:52,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 23:46:52,983 INFO L87 Difference]: Start difference. First operand 9562 states and 15193 transitions. Second operand has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 1 states have call successors, (52), 1 states have call predecessors, (52), 1 states have return successors, (52), 1 states have call predecessors, (52), 1 states have call successors, (52) [2024-11-18 23:46:53,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:46:53,675 INFO L93 Difference]: Finished difference Result 21163 states and 33661 transitions. [2024-11-18 23:46:53,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 23:46:53,677 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 1 states have call successors, (52), 1 states have call predecessors, (52), 1 states have return successors, (52), 1 states have call predecessors, (52), 1 states have call successors, (52) Word has length 354 [2024-11-18 23:46:53,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:46:53,730 INFO L225 Difference]: With dead ends: 21163 [2024-11-18 23:46:53,730 INFO L226 Difference]: Without dead ends: 11765 [2024-11-18 23:46:53,765 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 [2024-11-18 23:46:53,766 INFO L432 NwaCegarLoop]: 418 mSDtfsCounter, 209 mSDsluCounter, 730 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 209 SdHoareTripleChecker+Valid, 1148 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 23:46:53,766 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [209 Valid, 1148 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 23:46:53,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11765 states. [2024-11-18 23:46:54,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11765 to 11763. [2024-11-18 23:46:54,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11763 states, 9165 states have (on average 1.4813966175668303) internal successors, (13577), 9165 states have internal predecessors, (13577), 2548 states have call successors, (2548), 49 states have call predecessors, (2548), 49 states have return successors, (2548), 2548 states have call predecessors, (2548), 2548 states have call successors, (2548) [2024-11-18 23:46:54,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11763 states to 11763 states and 18673 transitions. [2024-11-18 23:46:54,869 INFO L78 Accepts]: Start accepts. Automaton has 11763 states and 18673 transitions. Word has length 354 [2024-11-18 23:46:54,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:46:54,870 INFO L471 AbstractCegarLoop]: Abstraction has 11763 states and 18673 transitions. [2024-11-18 23:46:54,870 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 1 states have call successors, (52), 1 states have call predecessors, (52), 1 states have return successors, (52), 1 states have call predecessors, (52), 1 states have call successors, (52) [2024-11-18 23:46:54,870 INFO L276 IsEmpty]: Start isEmpty. Operand 11763 states and 18673 transitions. [2024-11-18 23:46:54,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 356 [2024-11-18 23:46:54,975 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:46:54,975 INFO L215 NwaCegarLoop]: trace histogram [52, 52, 52, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 23:46:54,975 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-18 23:46:54,975 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:46:54,976 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:46:54,976 INFO L85 PathProgramCache]: Analyzing trace with hash 560926178, now seen corresponding path program 1 times [2024-11-18 23:46:54,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:46:54,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420111198] [2024-11-18 23:46:54,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:46:54,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:46:55,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:46:56,897 INFO L134 CoverageAnalysis]: Checked inductivity of 5304 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5304 trivial. 0 not checked. [2024-11-18 23:46:56,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:46:56,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420111198] [2024-11-18 23:46:56,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [420111198] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:46:56,897 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 23:46:56,898 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 23:46:56,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945159699] [2024-11-18 23:46:56,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:46:56,900 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 23:46:56,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:46:56,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 23:46:56,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-18 23:46:56,901 INFO L87 Difference]: Start difference. First operand 11763 states and 18673 transitions. Second operand has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 states have internal predecessors, (98), 2 states have call successors, (52), 1 states have call predecessors, (52), 1 states have return successors, (52), 2 states have call predecessors, (52), 2 states have call successors, (52) [2024-11-18 23:46:58,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:46:58,143 INFO L93 Difference]: Finished difference Result 25413 states and 40245 transitions. [2024-11-18 23:46:58,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 23:46:58,145 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 states have internal predecessors, (98), 2 states have call successors, (52), 1 states have call predecessors, (52), 1 states have return successors, (52), 2 states have call predecessors, (52), 2 states have call successors, (52) Word has length 355 [2024-11-18 23:46:58,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:46:58,231 INFO L225 Difference]: With dead ends: 25413 [2024-11-18 23:46:58,231 INFO L226 Difference]: Without dead ends: 13742 [2024-11-18 23:46:58,260 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-18 23:46:58,261 INFO L432 NwaCegarLoop]: 323 mSDtfsCounter, 462 mSDsluCounter, 815 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 254 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 462 SdHoareTripleChecker+Valid, 1138 SdHoareTripleChecker+Invalid, 418 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 254 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-18 23:46:58,261 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [462 Valid, 1138 Invalid, 418 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [254 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-18 23:46:58,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13742 states. [2024-11-18 23:46:59,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13742 to 11724. [2024-11-18 23:46:59,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11724 states, 9126 states have (on average 1.4811527503835196) internal successors, (13517), 9126 states have internal predecessors, (13517), 2548 states have call successors, (2548), 49 states have call predecessors, (2548), 49 states have return successors, (2548), 2548 states have call predecessors, (2548), 2548 states have call successors, (2548) [2024-11-18 23:46:59,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11724 states to 11724 states and 18613 transitions. [2024-11-18 23:46:59,277 INFO L78 Accepts]: Start accepts. Automaton has 11724 states and 18613 transitions. Word has length 355 [2024-11-18 23:46:59,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:46:59,278 INFO L471 AbstractCegarLoop]: Abstraction has 11724 states and 18613 transitions. [2024-11-18 23:46:59,279 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 states have internal predecessors, (98), 2 states have call successors, (52), 1 states have call predecessors, (52), 1 states have return successors, (52), 2 states have call predecessors, (52), 2 states have call successors, (52) [2024-11-18 23:46:59,279 INFO L276 IsEmpty]: Start isEmpty. Operand 11724 states and 18613 transitions. [2024-11-18 23:46:59,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 356 [2024-11-18 23:46:59,285 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:46:59,285 INFO L215 NwaCegarLoop]: trace histogram [52, 52, 52, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 23:46:59,285 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-18 23:46:59,285 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:46:59,286 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:46:59,286 INFO L85 PathProgramCache]: Analyzing trace with hash 697814713, now seen corresponding path program 1 times [2024-11-18 23:46:59,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:46:59,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641573788] [2024-11-18 23:46:59,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:46:59,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:46:59,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:47:00,144 INFO L134 CoverageAnalysis]: Checked inductivity of 5304 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5304 trivial. 0 not checked. [2024-11-18 23:47:00,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:47:00,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641573788] [2024-11-18 23:47:00,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [641573788] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:47:00,145 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 23:47:00,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 23:47:00,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994599133] [2024-11-18 23:47:00,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:47:00,146 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 23:47:00,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:47:00,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 23:47:00,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-18 23:47:00,147 INFO L87 Difference]: Start difference. First operand 11724 states and 18613 transitions. Second operand has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 1 states have call successors, (52), 1 states have call predecessors, (52), 1 states have return successors, (52), 1 states have call predecessors, (52), 1 states have call successors, (52) [2024-11-18 23:47:01,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:47:01,371 INFO L93 Difference]: Finished difference Result 27982 states and 44492 transitions. [2024-11-18 23:47:01,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 23:47:01,372 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 1 states have call successors, (52), 1 states have call predecessors, (52), 1 states have return successors, (52), 1 states have call predecessors, (52), 1 states have call successors, (52) Word has length 355 [2024-11-18 23:47:01,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:47:01,455 INFO L225 Difference]: With dead ends: 27982 [2024-11-18 23:47:01,455 INFO L226 Difference]: Without dead ends: 16386 [2024-11-18 23:47:01,493 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-11-18 23:47:01,494 INFO L432 NwaCegarLoop]: 440 mSDtfsCounter, 569 mSDsluCounter, 989 mSDsCounter, 0 mSdLazyCounter, 345 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 569 SdHoareTripleChecker+Valid, 1429 SdHoareTripleChecker+Invalid, 353 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 345 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-18 23:47:01,494 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [569 Valid, 1429 Invalid, 353 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 345 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-18 23:47:01,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16386 states. [2024-11-18 23:47:03,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16386 to 15934. [2024-11-18 23:47:03,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15934 states, 12520 states have (on average 1.4771565495207668) internal successors, (18494), 12536 states have internal predecessors, (18494), 3348 states have call successors, (3348), 65 states have call predecessors, (3348), 65 states have return successors, (3348), 3332 states have call predecessors, (3348), 3348 states have call successors, (3348) [2024-11-18 23:47:03,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15934 states to 15934 states and 25190 transitions. [2024-11-18 23:47:03,145 INFO L78 Accepts]: Start accepts. Automaton has 15934 states and 25190 transitions. Word has length 355 [2024-11-18 23:47:03,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:47:03,146 INFO L471 AbstractCegarLoop]: Abstraction has 15934 states and 25190 transitions. [2024-11-18 23:47:03,147 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 1 states have call successors, (52), 1 states have call predecessors, (52), 1 states have return successors, (52), 1 states have call predecessors, (52), 1 states have call successors, (52) [2024-11-18 23:47:03,147 INFO L276 IsEmpty]: Start isEmpty. Operand 15934 states and 25190 transitions. [2024-11-18 23:47:03,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 356 [2024-11-18 23:47:03,157 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:47:03,157 INFO L215 NwaCegarLoop]: trace histogram [52, 52, 52, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 23:47:03,157 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-18 23:47:03,157 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:47:03,158 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:47:03,158 INFO L85 PathProgramCache]: Analyzing trace with hash 165015268, now seen corresponding path program 1 times [2024-11-18 23:47:03,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:47:03,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509693521] [2024-11-18 23:47:03,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:47:03,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:47:03,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:47:04,689 INFO L134 CoverageAnalysis]: Checked inductivity of 5304 backedges. 54 proven. 99 refuted. 0 times theorem prover too weak. 5151 trivial. 0 not checked. [2024-11-18 23:47:04,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:47:04,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1509693521] [2024-11-18 23:47:04,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1509693521] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 23:47:04,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1795475511] [2024-11-18 23:47:04,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:47:04,690 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 23:47:04,690 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 23:47:04,693 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) [2024-11-18 23:47:04,694 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-18 23:47:04,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:47:04,973 INFO L255 TraceCheckSpWp]: Trace formula consists of 838 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-18 23:47:04,982 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 23:47:05,883 INFO L134 CoverageAnalysis]: Checked inductivity of 5304 backedges. 1221 proven. 18 refuted. 0 times theorem prover too weak. 4065 trivial. 0 not checked. [2024-11-18 23:47:05,884 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 23:47:07,069 INFO L134 CoverageAnalysis]: Checked inductivity of 5304 backedges. 135 proven. 18 refuted. 0 times theorem prover too weak. 5151 trivial. 0 not checked. [2024-11-18 23:47:07,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1795475511] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 23:47:07,069 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 23:47:07,070 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10, 11] total 26 [2024-11-18 23:47:07,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570299948] [2024-11-18 23:47:07,070 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 23:47:07,071 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-18 23:47:07,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:47:07,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-18 23:47:07,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=562, Unknown=0, NotChecked=0, Total=650 [2024-11-18 23:47:07,073 INFO L87 Difference]: Start difference. First operand 15934 states and 25190 transitions. Second operand has 26 states, 25 states have (on average 10.84) internal successors, (271), 26 states have internal predecessors, (271), 7 states have call successors, (156), 3 states have call predecessors, (156), 6 states have return successors, (156), 6 states have call predecessors, (156), 7 states have call successors, (156) [2024-11-18 23:47:16,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:47:16,273 INFO L93 Difference]: Finished difference Result 52300 states and 80038 transitions. [2024-11-18 23:47:16,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2024-11-18 23:47:16,274 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 10.84) internal successors, (271), 26 states have internal predecessors, (271), 7 states have call successors, (156), 3 states have call predecessors, (156), 6 states have return successors, (156), 6 states have call predecessors, (156), 7 states have call successors, (156) Word has length 355 [2024-11-18 23:47:16,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:47:16,433 INFO L225 Difference]: With dead ends: 52300 [2024-11-18 23:47:16,433 INFO L226 Difference]: Without dead ends: 36488 [2024-11-18 23:47:16,482 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 822 GetRequests, 709 SyntacticMatches, 0 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4570 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=2350, Invalid=10760, Unknown=0, NotChecked=0, Total=13110 [2024-11-18 23:47:16,483 INFO L432 NwaCegarLoop]: 452 mSDtfsCounter, 3427 mSDsluCounter, 4161 mSDsCounter, 0 mSdLazyCounter, 5286 mSolverCounterSat, 1849 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3427 SdHoareTripleChecker+Valid, 4613 SdHoareTripleChecker+Invalid, 7135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1849 IncrementalHoareTripleChecker+Valid, 5286 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2024-11-18 23:47:16,483 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3427 Valid, 4613 Invalid, 7135 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1849 Valid, 5286 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2024-11-18 23:47:16,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36488 states. [2024-11-18 23:47:20,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36488 to 26778. [2024-11-18 23:47:20,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26778 states, 19873 states have (on average 1.3997383384491522) internal successors, (27817), 19953 states have internal predecessors, (27817), 6420 states have call successors, (6420), 484 states have call predecessors, (6420), 484 states have return successors, (6420), 6340 states have call predecessors, (6420), 6420 states have call successors, (6420) [2024-11-18 23:47:20,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26778 states to 26778 states and 40657 transitions. [2024-11-18 23:47:20,258 INFO L78 Accepts]: Start accepts. Automaton has 26778 states and 40657 transitions. Word has length 355 [2024-11-18 23:47:20,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:47:20,259 INFO L471 AbstractCegarLoop]: Abstraction has 26778 states and 40657 transitions. [2024-11-18 23:47:20,259 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 10.84) internal successors, (271), 26 states have internal predecessors, (271), 7 states have call successors, (156), 3 states have call predecessors, (156), 6 states have return successors, (156), 6 states have call predecessors, (156), 7 states have call successors, (156) [2024-11-18 23:47:20,259 INFO L276 IsEmpty]: Start isEmpty. Operand 26778 states and 40657 transitions. [2024-11-18 23:47:20,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 357 [2024-11-18 23:47:20,270 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:47:20,270 INFO L215 NwaCegarLoop]: trace histogram [52, 52, 52, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 23:47:20,290 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-18 23:47:20,471 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-18 23:47:20,472 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:47:20,472 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:47:20,473 INFO L85 PathProgramCache]: Analyzing trace with hash 1114967694, now seen corresponding path program 1 times [2024-11-18 23:47:20,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:47:20,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667257397] [2024-11-18 23:47:20,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:47:20,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:47:20,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:47:21,077 INFO L134 CoverageAnalysis]: Checked inductivity of 5304 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5304 trivial. 0 not checked. [2024-11-18 23:47:21,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:47:21,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [667257397] [2024-11-18 23:47:21,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [667257397] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:47:21,078 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 23:47:21,078 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-18 23:47:21,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126800841] [2024-11-18 23:47:21,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:47:21,079 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-18 23:47:21,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:47:21,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-18 23:47:21,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-11-18 23:47:21,081 INFO L87 Difference]: Start difference. First operand 26778 states and 40657 transitions. Second operand has 10 states, 10 states have (on average 9.9) internal successors, (99), 10 states have internal predecessors, (99), 1 states have call successors, (52), 1 states have call predecessors, (52), 1 states have return successors, (52), 1 states have call predecessors, (52), 1 states have call successors, (52)