./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-multidimensional/copy-partial-3-u.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 803cd42f Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/array-multidimensional/copy-partial-3-u.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 52a248b2b2cf395cf0c12ea6447af889ed3691d7fa3d2de2504a7728d19c705b --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-803cd42-m [2024-11-21 20:55:56,988 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-21 20:55:57,065 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-21 20:55:57,068 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-21 20:55:57,069 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-21 20:55:57,082 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-21 20:55:57,083 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-21 20:55:57,083 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-21 20:55:57,084 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-21 20:55:57,084 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-21 20:55:57,084 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-21 20:55:57,085 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-21 20:55:57,085 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-21 20:55:57,087 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-21 20:55:57,087 INFO L153 SettingsManager]: * Use SBE=true [2024-11-21 20:55:57,087 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-21 20:55:57,087 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-21 20:55:57,087 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-21 20:55:57,088 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-21 20:55:57,088 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-21 20:55:57,088 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-21 20:55:57,090 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-21 20:55:57,092 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-21 20:55:57,092 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-21 20:55:57,092 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-21 20:55:57,092 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-21 20:55:57,093 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-21 20:55:57,093 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-21 20:55:57,093 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-21 20:55:57,093 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-21 20:55:57,093 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-21 20:55:57,093 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-21 20:55:57,093 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-21 20:55:57,094 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-21 20:55:57,094 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-21 20:55:57,094 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-21 20:55:57,094 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-21 20:55:57,094 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-21 20:55:57,094 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-21 20:55:57,094 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-21 20:55:57,095 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-21 20:55:57,097 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-21 20:55:57,097 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 52a248b2b2cf395cf0c12ea6447af889ed3691d7fa3d2de2504a7728d19c705b [2024-11-21 20:55:57,310 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-21 20:55:57,331 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-21 20:55:57,333 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-21 20:55:57,334 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-21 20:55:57,334 INFO L274 PluginConnector]: CDTParser initialized [2024-11-21 20:55:57,335 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-multidimensional/copy-partial-3-u.c [2024-11-21 20:55:58,571 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-21 20:55:58,731 INFO L384 CDTParser]: Found 1 translation units. [2024-11-21 20:55:58,732 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-multidimensional/copy-partial-3-u.c [2024-11-21 20:55:58,737 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c87f402a5/c01d9a6c9e7b4921916f551b0f01d204/FLAG3bddc931c [2024-11-21 20:55:58,748 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c87f402a5/c01d9a6c9e7b4921916f551b0f01d204 [2024-11-21 20:55:58,750 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-21 20:55:58,751 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-21 20:55:58,758 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-21 20:55:58,759 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-21 20:55:58,763 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-21 20:55:58,764 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 08:55:58" (1/1) ... [2024-11-21 20:55:58,766 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51c4f297 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:55:58, skipping insertion in model container [2024-11-21 20:55:58,766 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 08:55:58" (1/1) ... [2024-11-21 20:55:58,784 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-21 20:55:58,927 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/array-multidimensional/copy-partial-3-u.c[414,427] [2024-11-21 20:55:58,944 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-21 20:55:58,950 INFO L200 MainTranslator]: Completed pre-run [2024-11-21 20:55:58,959 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/array-multidimensional/copy-partial-3-u.c[414,427] [2024-11-21 20:55:58,970 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-21 20:55:58,983 INFO L204 MainTranslator]: Completed translation [2024-11-21 20:55:58,983 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:55:58 WrapperNode [2024-11-21 20:55:58,983 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-21 20:55:58,984 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-21 20:55:58,984 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-21 20:55:58,984 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-21 20:55:58,990 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:55:58" (1/1) ... [2024-11-21 20:55:58,996 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:55:58" (1/1) ... [2024-11-21 20:55:59,017 INFO L138 Inliner]: procedures = 15, calls = 22, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 132 [2024-11-21 20:55:59,018 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-21 20:55:59,018 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-21 20:55:59,018 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-21 20:55:59,018 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-21 20:55:59,030 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:55:58" (1/1) ... [2024-11-21 20:55:59,030 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:55:58" (1/1) ... [2024-11-21 20:55:59,032 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:55:58" (1/1) ... [2024-11-21 20:55:59,042 INFO L175 MemorySlicer]: Split 9 memory accesses to 3 slices as follows [2, 3, 4]. 44 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 3 writes are split as follows [0, 2, 1]. [2024-11-21 20:55:59,043 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:55:58" (1/1) ... [2024-11-21 20:55:59,043 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:55:58" (1/1) ... [2024-11-21 20:55:59,047 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:55:58" (1/1) ... [2024-11-21 20:55:59,051 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:55:58" (1/1) ... [2024-11-21 20:55:59,052 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:55:58" (1/1) ... [2024-11-21 20:55:59,053 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:55:58" (1/1) ... [2024-11-21 20:55:59,055 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-21 20:55:59,055 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-21 20:55:59,055 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-21 20:55:59,056 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-21 20:55:59,056 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:55:58" (1/1) ... [2024-11-21 20:55:59,066 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-21 20:55:59,075 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 20:55:59,096 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) [2024-11-21 20:55:59,099 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 [2024-11-21 20:55:59,137 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-21 20:55:59,138 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-21 20:55:59,139 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-21 20:55:59,139 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-21 20:55:59,139 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-21 20:55:59,139 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-21 20:55:59,139 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-21 20:55:59,139 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-21 20:55:59,141 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-21 20:55:59,141 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-21 20:55:59,141 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-21 20:55:59,141 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-21 20:55:59,141 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-21 20:55:59,141 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-21 20:55:59,223 INFO L238 CfgBuilder]: Building ICFG [2024-11-21 20:55:59,225 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-21 20:55:59,412 INFO L? ?]: Removed 31 outVars from TransFormulas that were not future-live. [2024-11-21 20:55:59,412 INFO L287 CfgBuilder]: Performing block encoding [2024-11-21 20:55:59,425 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-21 20:55:59,426 INFO L316 CfgBuilder]: Removed 12 assume(true) statements. [2024-11-21 20:55:59,427 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 08:55:59 BoogieIcfgContainer [2024-11-21 20:55:59,427 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-21 20:55:59,430 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-21 20:55:59,431 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-21 20:55:59,433 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-21 20:55:59,434 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 08:55:58" (1/3) ... [2024-11-21 20:55:59,435 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29ae630f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 08:55:59, skipping insertion in model container [2024-11-21 20:55:59,435 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:55:58" (2/3) ... [2024-11-21 20:55:59,435 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29ae630f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 08:55:59, skipping insertion in model container [2024-11-21 20:55:59,436 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 08:55:59" (3/3) ... [2024-11-21 20:55:59,437 INFO L112 eAbstractionObserver]: Analyzing ICFG copy-partial-3-u.c [2024-11-21 20:55:59,449 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-21 20:55:59,449 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-21 20:55:59,497 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-21 20:55:59,502 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;@51245d2a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-21 20:55:59,503 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-21 20:55:59,506 INFO L276 IsEmpty]: Start isEmpty. Operand has 35 states, 33 states have (on average 1.8181818181818181) internal successors, (60), 34 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 20:55:59,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-21 20:55:59,511 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 20:55:59,511 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 20:55:59,512 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 20:55:59,515 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 20:55:59,516 INFO L85 PathProgramCache]: Analyzing trace with hash -1247519481, now seen corresponding path program 1 times [2024-11-21 20:55:59,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 20:55:59,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050601264] [2024-11-21 20:55:59,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 20:55:59,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 20:55:59,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 20:55:59,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-21 20:55:59,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 20:55:59,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050601264] [2024-11-21 20:55:59,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2050601264] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 20:55:59,646 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-21 20:55:59,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-21 20:55:59,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563137954] [2024-11-21 20:55:59,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 20:55:59,650 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-21 20:55:59,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 20:55:59,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-21 20:55:59,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-21 20:55:59,673 INFO L87 Difference]: Start difference. First operand has 35 states, 33 states have (on average 1.8181818181818181) internal successors, (60), 34 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 20:55:59,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 20:55:59,685 INFO L93 Difference]: Finished difference Result 67 states and 116 transitions. [2024-11-21 20:55:59,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-21 20:55:59,687 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2024-11-21 20:55:59,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 20:55:59,692 INFO L225 Difference]: With dead ends: 67 [2024-11-21 20:55:59,692 INFO L226 Difference]: Without dead ends: 31 [2024-11-21 20:55:59,694 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-21 20:55:59,696 INFO L432 NwaCegarLoop]: 46 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, 46 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 [2024-11-21 20:55:59,697 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-21 20:55:59,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2024-11-21 20:55:59,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2024-11-21 20:55:59,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 30 states have (on average 1.4) internal successors, (42), 30 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 20:55:59,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 42 transitions. [2024-11-21 20:55:59,719 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 42 transitions. Word has length 15 [2024-11-21 20:55:59,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 20:55:59,720 INFO L471 AbstractCegarLoop]: Abstraction has 31 states and 42 transitions. [2024-11-21 20:55:59,720 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 20:55:59,720 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 42 transitions. [2024-11-21 20:55:59,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-21 20:55:59,721 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 20:55:59,721 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 20:55:59,721 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-21 20:55:59,721 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 20:55:59,721 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 20:55:59,722 INFO L85 PathProgramCache]: Analyzing trace with hash -5605811, now seen corresponding path program 1 times [2024-11-21 20:55:59,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 20:55:59,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361671329] [2024-11-21 20:55:59,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 20:55:59,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 20:55:59,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 20:55:59,894 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-21 20:55:59,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 20:55:59,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [361671329] [2024-11-21 20:55:59,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [361671329] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 20:55:59,895 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-21 20:55:59,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-21 20:55:59,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917425837] [2024-11-21 20:55:59,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 20:55:59,897 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-21 20:55:59,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 20:55:59,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-21 20:55:59,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-21 20:55:59,898 INFO L87 Difference]: Start difference. First operand 31 states and 42 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 20:55:59,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 20:55:59,987 INFO L93 Difference]: Finished difference Result 72 states and 99 transitions. [2024-11-21 20:55:59,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-21 20:55:59,987 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2024-11-21 20:55:59,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 20:55:59,988 INFO L225 Difference]: With dead ends: 72 [2024-11-21 20:55:59,988 INFO L226 Difference]: Without dead ends: 50 [2024-11-21 20:55:59,988 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-21 20:55:59,989 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 62 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-21 20:55:59,990 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 33 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-21 20:55:59,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2024-11-21 20:55:59,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 32. [2024-11-21 20:55:59,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 31 states have (on average 1.3870967741935485) internal successors, (43), 31 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 20:55:59,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 43 transitions. [2024-11-21 20:55:59,997 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 43 transitions. Word has length 15 [2024-11-21 20:55:59,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 20:55:59,998 INFO L471 AbstractCegarLoop]: Abstraction has 32 states and 43 transitions. [2024-11-21 20:55:59,998 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 20:55:59,998 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 43 transitions. [2024-11-21 20:55:59,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-11-21 20:55:59,998 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 20:55:59,998 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 20:55:59,999 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-21 20:55:59,999 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 20:56:00,000 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 20:56:00,001 INFO L85 PathProgramCache]: Analyzing trace with hash -785961326, now seen corresponding path program 1 times [2024-11-21 20:56:00,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 20:56:00,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878900164] [2024-11-21 20:56:00,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 20:56:00,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 20:56:00,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 20:56:00,088 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-21 20:56:00,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 20:56:00,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878900164] [2024-11-21 20:56:00,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [878900164] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 20:56:00,089 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-21 20:56:00,089 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-21 20:56:00,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643842077] [2024-11-21 20:56:00,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 20:56:00,091 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-21 20:56:00,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 20:56:00,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-21 20:56:00,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-21 20:56:00,093 INFO L87 Difference]: Start difference. First operand 32 states and 43 transitions. Second operand has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 20:56:00,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 20:56:00,160 INFO L93 Difference]: Finished difference Result 72 states and 100 transitions. [2024-11-21 20:56:00,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-21 20:56:00,161 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2024-11-21 20:56:00,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 20:56:00,161 INFO L225 Difference]: With dead ends: 72 [2024-11-21 20:56:00,161 INFO L226 Difference]: Without dead ends: 45 [2024-11-21 20:56:00,162 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-21 20:56:00,162 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 67 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-21 20:56:00,163 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 35 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-21 20:56:00,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2024-11-21 20:56:00,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 34. [2024-11-21 20:56:00,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 33 states have (on average 1.3636363636363635) internal successors, (45), 33 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 20:56:00,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 45 transitions. [2024-11-21 20:56:00,173 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 45 transitions. Word has length 18 [2024-11-21 20:56:00,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 20:56:00,174 INFO L471 AbstractCegarLoop]: Abstraction has 34 states and 45 transitions. [2024-11-21 20:56:00,174 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 20:56:00,174 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 45 transitions. [2024-11-21 20:56:00,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-21 20:56:00,175 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 20:56:00,175 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 20:56:00,175 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-21 20:56:00,175 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 20:56:00,176 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 20:56:00,176 INFO L85 PathProgramCache]: Analyzing trace with hash -1148207861, now seen corresponding path program 1 times [2024-11-21 20:56:00,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 20:56:00,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258605987] [2024-11-21 20:56:00,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 20:56:00,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 20:56:00,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 20:56:00,265 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-21 20:56:00,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 20:56:00,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258605987] [2024-11-21 20:56:00,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [258605987] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 20:56:00,266 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-21 20:56:00,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-21 20:56:00,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984671937] [2024-11-21 20:56:00,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 20:56:00,266 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-21 20:56:00,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 20:56:00,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-21 20:56:00,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-21 20:56:00,267 INFO L87 Difference]: Start difference. First operand 34 states and 45 transitions. Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 20:56:00,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 20:56:00,322 INFO L93 Difference]: Finished difference Result 70 states and 95 transitions. [2024-11-21 20:56:00,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-21 20:56:00,322 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2024-11-21 20:56:00,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 20:56:00,323 INFO L225 Difference]: With dead ends: 70 [2024-11-21 20:56:00,324 INFO L226 Difference]: Without dead ends: 41 [2024-11-21 20:56:00,325 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-21 20:56:00,326 INFO L432 NwaCegarLoop]: 22 mSDtfsCounter, 42 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-21 20:56:00,326 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 43 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-21 20:56:00,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2024-11-21 20:56:00,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 36. [2024-11-21 20:56:00,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 35 states have (on average 1.3428571428571427) internal successors, (47), 35 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 20:56:00,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 47 transitions. [2024-11-21 20:56:00,333 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 47 transitions. Word has length 21 [2024-11-21 20:56:00,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 20:56:00,334 INFO L471 AbstractCegarLoop]: Abstraction has 36 states and 47 transitions. [2024-11-21 20:56:00,334 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 20:56:00,334 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 47 transitions. [2024-11-21 20:56:00,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-21 20:56:00,334 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 20:56:00,334 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 20:56:00,335 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-21 20:56:00,335 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 20:56:00,335 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 20:56:00,335 INFO L85 PathProgramCache]: Analyzing trace with hash 1730545667, now seen corresponding path program 1 times [2024-11-21 20:56:00,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 20:56:00,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568898359] [2024-11-21 20:56:00,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 20:56:00,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 20:56:00,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 20:56:00,389 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-21 20:56:00,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 20:56:00,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568898359] [2024-11-21 20:56:00,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [568898359] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 20:56:00,390 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-21 20:56:00,390 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-21 20:56:00,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327237916] [2024-11-21 20:56:00,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 20:56:00,391 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-21 20:56:00,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 20:56:00,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-21 20:56:00,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-21 20:56:00,392 INFO L87 Difference]: Start difference. First operand 36 states and 47 transitions. Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 20:56:00,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 20:56:00,448 INFO L93 Difference]: Finished difference Result 76 states and 99 transitions. [2024-11-21 20:56:00,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-21 20:56:00,450 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2024-11-21 20:56:00,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 20:56:00,450 INFO L225 Difference]: With dead ends: 76 [2024-11-21 20:56:00,450 INFO L226 Difference]: Without dead ends: 58 [2024-11-21 20:56:00,451 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-21 20:56:00,451 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 52 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-21 20:56:00,452 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 45 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-21 20:56:00,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2024-11-21 20:56:00,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 37. [2024-11-21 20:56:00,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 36 states have (on average 1.3333333333333333) internal successors, (48), 36 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 20:56:00,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 48 transitions. [2024-11-21 20:56:00,460 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 48 transitions. Word has length 22 [2024-11-21 20:56:00,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 20:56:00,460 INFO L471 AbstractCegarLoop]: Abstraction has 37 states and 48 transitions. [2024-11-21 20:56:00,460 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 20:56:00,460 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 48 transitions. [2024-11-21 20:56:00,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-21 20:56:00,461 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 20:56:00,461 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 20:56:00,461 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-21 20:56:00,461 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 20:56:00,462 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 20:56:00,462 INFO L85 PathProgramCache]: Analyzing trace with hash -1794892619, now seen corresponding path program 1 times [2024-11-21 20:56:00,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 20:56:00,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766617497] [2024-11-21 20:56:00,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 20:56:00,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 20:56:00,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 20:56:00,534 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-21 20:56:00,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 20:56:00,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [766617497] [2024-11-21 20:56:00,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [766617497] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 20:56:00,535 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-21 20:56:00,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-21 20:56:00,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318318444] [2024-11-21 20:56:00,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 20:56:00,537 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-21 20:56:00,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 20:56:00,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-21 20:56:00,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-21 20:56:00,538 INFO L87 Difference]: Start difference. First operand 37 states and 48 transitions. Second operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 20:56:00,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 20:56:00,590 INFO L93 Difference]: Finished difference Result 73 states and 96 transitions. [2024-11-21 20:56:00,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-21 20:56:00,590 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2024-11-21 20:56:00,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 20:56:00,591 INFO L225 Difference]: With dead ends: 73 [2024-11-21 20:56:00,591 INFO L226 Difference]: Without dead ends: 50 [2024-11-21 20:56:00,591 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-21 20:56:00,592 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 42 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-21 20:56:00,592 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 45 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-21 20:56:00,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2024-11-21 20:56:00,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 38. [2024-11-21 20:56:00,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 37 states have (on average 1.3243243243243243) internal successors, (49), 37 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 20:56:00,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 49 transitions. [2024-11-21 20:56:00,605 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 49 transitions. Word has length 25 [2024-11-21 20:56:00,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 20:56:00,607 INFO L471 AbstractCegarLoop]: Abstraction has 38 states and 49 transitions. [2024-11-21 20:56:00,607 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 20:56:00,607 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 49 transitions. [2024-11-21 20:56:00,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-21 20:56:00,608 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 20:56:00,608 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 20:56:00,608 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-21 20:56:00,609 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 20:56:00,609 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 20:56:00,609 INFO L85 PathProgramCache]: Analyzing trace with hash 1471150881, now seen corresponding path program 1 times [2024-11-21 20:56:00,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 20:56:00,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836573667] [2024-11-21 20:56:00,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 20:56:00,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 20:56:00,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 20:56:00,679 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-21 20:56:00,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 20:56:00,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836573667] [2024-11-21 20:56:00,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1836573667] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 20:56:00,681 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-21 20:56:00,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-21 20:56:00,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441206082] [2024-11-21 20:56:00,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 20:56:00,682 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-21 20:56:00,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 20:56:00,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-21 20:56:00,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-21 20:56:00,683 INFO L87 Difference]: Start difference. First operand 38 states and 49 transitions. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 20:56:00,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 20:56:00,731 INFO L93 Difference]: Finished difference Result 67 states and 87 transitions. [2024-11-21 20:56:00,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-21 20:56:00,732 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2024-11-21 20:56:00,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 20:56:00,732 INFO L225 Difference]: With dead ends: 67 [2024-11-21 20:56:00,732 INFO L226 Difference]: Without dead ends: 43 [2024-11-21 20:56:00,732 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-21 20:56:00,733 INFO L432 NwaCegarLoop]: 30 mSDtfsCounter, 32 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-21 20:56:00,733 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 54 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-21 20:56:00,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2024-11-21 20:56:00,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 39. [2024-11-21 20:56:00,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 38 states have (on average 1.3157894736842106) internal successors, (50), 38 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 20:56:00,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 50 transitions. [2024-11-21 20:56:00,744 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 50 transitions. Word has length 28 [2024-11-21 20:56:00,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 20:56:00,745 INFO L471 AbstractCegarLoop]: Abstraction has 39 states and 50 transitions. [2024-11-21 20:56:00,746 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 20:56:00,746 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 50 transitions. [2024-11-21 20:56:00,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-21 20:56:00,747 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 20:56:00,747 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 20:56:00,748 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-21 20:56:00,748 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 20:56:00,748 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 20:56:00,748 INFO L85 PathProgramCache]: Analyzing trace with hash -585856218, now seen corresponding path program 1 times [2024-11-21 20:56:00,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 20:56:00,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210292361] [2024-11-21 20:56:00,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 20:56:00,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 20:56:00,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 20:56:00,838 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-21 20:56:00,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 20:56:00,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1210292361] [2024-11-21 20:56:00,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1210292361] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 20:56:00,839 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-21 20:56:00,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-21 20:56:00,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658738954] [2024-11-21 20:56:00,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 20:56:00,840 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-21 20:56:00,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 20:56:00,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-21 20:56:00,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-21 20:56:00,840 INFO L87 Difference]: Start difference. First operand 39 states and 50 transitions. Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 20:56:00,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 20:56:00,902 INFO L93 Difference]: Finished difference Result 56 states and 72 transitions. [2024-11-21 20:56:00,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-21 20:56:00,903 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2024-11-21 20:56:00,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 20:56:00,903 INFO L225 Difference]: With dead ends: 56 [2024-11-21 20:56:00,904 INFO L226 Difference]: Without dead ends: 44 [2024-11-21 20:56:00,904 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-21 20:56:00,905 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 39 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-21 20:56:00,908 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 26 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-21 20:56:00,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2024-11-21 20:56:00,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 40. [2024-11-21 20:56:00,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 39 states have (on average 1.3076923076923077) internal successors, (51), 39 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 20:56:00,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 51 transitions. [2024-11-21 20:56:00,920 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 51 transitions. Word has length 29 [2024-11-21 20:56:00,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 20:56:00,920 INFO L471 AbstractCegarLoop]: Abstraction has 40 states and 51 transitions. [2024-11-21 20:56:00,921 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 20:56:00,921 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 51 transitions. [2024-11-21 20:56:00,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-11-21 20:56:00,922 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 20:56:00,922 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 20:56:00,923 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-21 20:56:00,923 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 20:56:00,923 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 20:56:00,924 INFO L85 PathProgramCache]: Analyzing trace with hash 628365451, now seen corresponding path program 1 times [2024-11-21 20:56:00,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 20:56:00,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023434182] [2024-11-21 20:56:00,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 20:56:00,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 20:56:00,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 20:56:00,991 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-21 20:56:00,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 20:56:00,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023434182] [2024-11-21 20:56:00,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1023434182] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 20:56:00,993 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-21 20:56:00,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-21 20:56:00,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983772179] [2024-11-21 20:56:00,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 20:56:00,994 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-21 20:56:00,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 20:56:00,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-21 20:56:00,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-21 20:56:00,996 INFO L87 Difference]: Start difference. First operand 40 states and 51 transitions. Second operand has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 20:56:01,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 20:56:01,045 INFO L93 Difference]: Finished difference Result 60 states and 78 transitions. [2024-11-21 20:56:01,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-21 20:56:01,047 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2024-11-21 20:56:01,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 20:56:01,047 INFO L225 Difference]: With dead ends: 60 [2024-11-21 20:56:01,047 INFO L226 Difference]: Without dead ends: 43 [2024-11-21 20:56:01,048 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-21 20:56:01,048 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 29 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-21 20:56:01,049 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 30 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-21 20:56:01,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2024-11-21 20:56:01,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 41. [2024-11-21 20:56:01,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 40 states have (on average 1.3) internal successors, (52), 40 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 20:56:01,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 52 transitions. [2024-11-21 20:56:01,057 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 52 transitions. Word has length 32 [2024-11-21 20:56:01,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 20:56:01,058 INFO L471 AbstractCegarLoop]: Abstraction has 41 states and 52 transitions. [2024-11-21 20:56:01,058 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 20:56:01,058 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 52 transitions. [2024-11-21 20:56:01,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-11-21 20:56:01,058 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 20:56:01,059 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 20:56:01,059 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-21 20:56:01,059 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 20:56:01,059 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 20:56:01,059 INFO L85 PathProgramCache]: Analyzing trace with hash -1983947548, now seen corresponding path program 1 times [2024-11-21 20:56:01,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 20:56:01,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873925000] [2024-11-21 20:56:01,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 20:56:01,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 20:56:01,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 20:56:01,101 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-21 20:56:01,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 20:56:01,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873925000] [2024-11-21 20:56:01,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1873925000] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 20:56:01,101 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-21 20:56:01,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-21 20:56:01,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458130647] [2024-11-21 20:56:01,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 20:56:01,102 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-21 20:56:01,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 20:56:01,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-21 20:56:01,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-21 20:56:01,103 INFO L87 Difference]: Start difference. First operand 41 states and 52 transitions. Second operand has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 20:56:01,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 20:56:01,145 INFO L93 Difference]: Finished difference Result 60 states and 77 transitions. [2024-11-21 20:56:01,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-21 20:56:01,146 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2024-11-21 20:56:01,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 20:56:01,146 INFO L225 Difference]: With dead ends: 60 [2024-11-21 20:56:01,146 INFO L226 Difference]: Without dead ends: 42 [2024-11-21 20:56:01,146 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-21 20:56:01,147 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 20 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-21 20:56:01,147 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 35 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-21 20:56:01,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2024-11-21 20:56:01,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2024-11-21 20:56:01,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 41 states have (on average 1.2926829268292683) internal successors, (53), 41 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 20:56:01,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 53 transitions. [2024-11-21 20:56:01,153 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 53 transitions. Word has length 35 [2024-11-21 20:56:01,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 20:56:01,153 INFO L471 AbstractCegarLoop]: Abstraction has 42 states and 53 transitions. [2024-11-21 20:56:01,153 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 20:56:01,153 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 53 transitions. [2024-11-21 20:56:01,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-11-21 20:56:01,154 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 20:56:01,154 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 20:56:01,154 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-21 20:56:01,154 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 20:56:01,154 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 20:56:01,154 INFO L85 PathProgramCache]: Analyzing trace with hash 1063758460, now seen corresponding path program 1 times [2024-11-21 20:56:01,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 20:56:01,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023483540] [2024-11-21 20:56:01,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 20:56:01,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 20:56:01,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 20:56:01,205 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-21 20:56:01,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 20:56:01,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023483540] [2024-11-21 20:56:01,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2023483540] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-21 20:56:01,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1636040369] [2024-11-21 20:56:01,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 20:56:01,206 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 20:56:01,206 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 20:56:01,208 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) [2024-11-21 20:56:01,209 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-21 20:56:01,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 20:56:01,272 INFO L255 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-21 20:56:01,275 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-21 20:56:01,329 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-21 20:56:01,329 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-21 20:56:01,361 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-21 20:56:01,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1636040369] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-21 20:56:01,361 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-21 20:56:01,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-11-21 20:56:01,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092998740] [2024-11-21 20:56:01,362 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-21 20:56:01,362 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-21 20:56:01,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 20:56:01,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-21 20:56:01,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2024-11-21 20:56:01,362 INFO L87 Difference]: Start difference. First operand 42 states and 53 transitions. Second operand has 10 states, 10 states have (on average 4.6) internal successors, (46), 10 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 20:56:01,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 20:56:01,454 INFO L93 Difference]: Finished difference Result 100 states and 131 transitions. [2024-11-21 20:56:01,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-21 20:56:01,454 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.6) internal successors, (46), 10 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2024-11-21 20:56:01,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 20:56:01,455 INFO L225 Difference]: With dead ends: 100 [2024-11-21 20:56:01,456 INFO L226 Difference]: Without dead ends: 63 [2024-11-21 20:56:01,456 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2024-11-21 20:56:01,456 INFO L432 NwaCegarLoop]: 22 mSDtfsCounter, 86 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-21 20:56:01,456 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 73 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-21 20:56:01,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2024-11-21 20:56:01,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 54. [2024-11-21 20:56:01,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 53 states have (on average 1.2830188679245282) internal successors, (68), 53 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 20:56:01,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 68 transitions. [2024-11-21 20:56:01,471 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 68 transitions. Word has length 36 [2024-11-21 20:56:01,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 20:56:01,472 INFO L471 AbstractCegarLoop]: Abstraction has 54 states and 68 transitions. [2024-11-21 20:56:01,474 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.6) internal successors, (46), 10 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 20:56:01,474 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 68 transitions. [2024-11-21 20:56:01,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-21 20:56:01,475 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 20:56:01,475 INFO L215 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 20:56:01,484 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-21 20:56:01,675 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,SelfDestructingSolverStorable10 [2024-11-21 20:56:01,676 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 20:56:01,676 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 20:56:01,676 INFO L85 PathProgramCache]: Analyzing trace with hash -1364299900, now seen corresponding path program 2 times [2024-11-21 20:56:01,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 20:56:01,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1975797087] [2024-11-21 20:56:01,676 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-21 20:56:01,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 20:56:01,697 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-21 20:56:01,698 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-21 20:56:01,756 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-21 20:56:01,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 20:56:01,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1975797087] [2024-11-21 20:56:01,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1975797087] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-21 20:56:01,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [659746080] [2024-11-21 20:56:01,757 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-21 20:56:01,757 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 20:56:01,757 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 20:56:01,759 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) [2024-11-21 20:56:01,760 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-21 20:56:01,834 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-21 20:56:01,834 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-21 20:56:01,835 INFO L255 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-21 20:56:01,836 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-21 20:56:01,905 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-21 20:56:01,907 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-21 20:56:01,976 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-21 20:56:01,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [659746080] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-21 20:56:01,977 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-21 20:56:01,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 8, 8] total 16 [2024-11-21 20:56:01,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662214247] [2024-11-21 20:56:01,977 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-21 20:56:01,977 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-21 20:56:01,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 20:56:01,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-21 20:56:01,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=152, Unknown=0, NotChecked=0, Total=240 [2024-11-21 20:56:01,978 INFO L87 Difference]: Start difference. First operand 54 states and 68 transitions. Second operand has 16 states, 16 states have (on average 3.625) internal successors, (58), 16 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 20:56:02,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 20:56:02,506 INFO L93 Difference]: Finished difference Result 328 states and 430 transitions. [2024-11-21 20:56:02,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2024-11-21 20:56:02,507 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.625) internal successors, (58), 16 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2024-11-21 20:56:02,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 20:56:02,508 INFO L225 Difference]: With dead ends: 328 [2024-11-21 20:56:02,508 INFO L226 Difference]: Without dead ends: 279 [2024-11-21 20:56:02,509 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 454 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=629, Invalid=1093, Unknown=0, NotChecked=0, Total=1722 [2024-11-21 20:56:02,509 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 957 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 138 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 957 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 327 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 138 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-21 20:56:02,509 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [957 Valid, 111 Invalid, 327 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [138 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-21 20:56:02,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2024-11-21 20:56:02,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 94. [2024-11-21 20:56:02,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 93 states have (on average 1.2473118279569892) internal successors, (116), 93 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 20:56:02,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 116 transitions. [2024-11-21 20:56:02,523 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 116 transitions. Word has length 39 [2024-11-21 20:56:02,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 20:56:02,523 INFO L471 AbstractCegarLoop]: Abstraction has 94 states and 116 transitions. [2024-11-21 20:56:02,523 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.625) internal successors, (58), 16 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 20:56:02,523 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 116 transitions. [2024-11-21 20:56:02,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-11-21 20:56:02,524 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 20:56:02,524 INFO L215 NwaCegarLoop]: trace histogram [20, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 20:56:02,531 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-21 20:56:02,728 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,SelfDestructingSolverStorable11 [2024-11-21 20:56:02,729 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 20:56:02,729 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 20:56:02,729 INFO L85 PathProgramCache]: Analyzing trace with hash -543322686, now seen corresponding path program 3 times [2024-11-21 20:56:02,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 20:56:02,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128650951] [2024-11-21 20:56:02,729 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-21 20:56:02,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 20:56:02,751 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-21 20:56:02,751 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-21 20:56:02,797 INFO L134 CoverageAnalysis]: Checked inductivity of 248 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 247 trivial. 0 not checked. [2024-11-21 20:56:02,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 20:56:02,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1128650951] [2024-11-21 20:56:02,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1128650951] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-21 20:56:02,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1549496430] [2024-11-21 20:56:02,798 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-21 20:56:02,798 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 20:56:02,798 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 20:56:02,800 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) [2024-11-21 20:56:02,801 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-21 20:56:02,867 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-21 20:56:02,867 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-21 20:56:02,868 INFO L255 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-21 20:56:02,869 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-21 20:56:03,025 INFO L134 CoverageAnalysis]: Checked inductivity of 248 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 247 trivial. 0 not checked. [2024-11-21 20:56:03,026 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-21 20:56:03,108 INFO L134 CoverageAnalysis]: Checked inductivity of 248 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 247 trivial. 0 not checked. [2024-11-21 20:56:03,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1549496430] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-21 20:56:03,109 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-21 20:56:03,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-21 20:56:03,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539943691] [2024-11-21 20:56:03,111 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-21 20:56:03,111 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-21 20:56:03,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 20:56:03,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-21 20:56:03,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-11-21 20:56:03,112 INFO L87 Difference]: Start difference. First operand 94 states and 116 transitions. Second operand has 11 states, 11 states have (on average 8.545454545454545) internal successors, (94), 11 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 20:56:03,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 20:56:03,272 INFO L93 Difference]: Finished difference Result 319 states and 406 transitions. [2024-11-21 20:56:03,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-21 20:56:03,273 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.545454545454545) internal successors, (94), 11 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2024-11-21 20:56:03,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 20:56:03,274 INFO L225 Difference]: With dead ends: 319 [2024-11-21 20:56:03,274 INFO L226 Difference]: Without dead ends: 262 [2024-11-21 20:56:03,274 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=75, Invalid=135, Unknown=0, NotChecked=0, Total=210 [2024-11-21 20:56:03,275 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 413 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 413 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-21 20:56:03,275 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [413 Valid, 45 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-21 20:56:03,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2024-11-21 20:56:03,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 147. [2024-11-21 20:56:03,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 146 states have (on average 1.226027397260274) internal successors, (179), 146 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 20:56:03,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 179 transitions. [2024-11-21 20:56:03,294 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 179 transitions. Word has length 61 [2024-11-21 20:56:03,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 20:56:03,294 INFO L471 AbstractCegarLoop]: Abstraction has 147 states and 179 transitions. [2024-11-21 20:56:03,294 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.545454545454545) internal successors, (94), 11 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 20:56:03,294 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 179 transitions. [2024-11-21 20:56:03,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2024-11-21 20:56:03,295 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 20:56:03,295 INFO L215 NwaCegarLoop]: trace histogram [40, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 20:56:03,303 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-21 20:56:03,495 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 20:56:03,496 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 20:56:03,496 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 20:56:03,496 INFO L85 PathProgramCache]: Analyzing trace with hash -1527243484, now seen corresponding path program 4 times [2024-11-21 20:56:03,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 20:56:03,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113750913] [2024-11-21 20:56:03,496 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-21 20:56:03,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 20:56:03,525 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-21 20:56:03,525 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-21 20:56:03,597 INFO L134 CoverageAnalysis]: Checked inductivity of 1077 backedges. 8 proven. 380 refuted. 0 times theorem prover too weak. 689 trivial. 0 not checked. [2024-11-21 20:56:03,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 20:56:03,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113750913] [2024-11-21 20:56:03,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [113750913] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-21 20:56:03,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [429626725] [2024-11-21 20:56:03,598 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-21 20:56:03,598 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 20:56:03,599 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 20:56:03,600 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) [2024-11-21 20:56:03,601 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-21 20:56:03,702 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-21 20:56:03,702 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-21 20:56:03,703 INFO L255 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-21 20:56:03,705 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-21 20:56:03,800 INFO L134 CoverageAnalysis]: Checked inductivity of 1077 backedges. 388 proven. 1 refuted. 0 times theorem prover too weak. 688 trivial. 0 not checked. [2024-11-21 20:56:03,804 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-21 20:56:03,860 INFO L134 CoverageAnalysis]: Checked inductivity of 1077 backedges. 387 proven. 2 refuted. 0 times theorem prover too weak. 688 trivial. 0 not checked. [2024-11-21 20:56:03,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [429626725] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-21 20:56:03,860 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-21 20:56:03,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 15 [2024-11-21 20:56:03,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526312231] [2024-11-21 20:56:03,860 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-21 20:56:03,861 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-21 20:56:03,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 20:56:03,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-21 20:56:03,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2024-11-21 20:56:03,862 INFO L87 Difference]: Start difference. First operand 147 states and 179 transitions. Second operand has 15 states, 15 states have (on average 5.2) internal successors, (78), 15 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 20:56:04,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 20:56:04,126 INFO L93 Difference]: Finished difference Result 494 states and 606 transitions. [2024-11-21 20:56:04,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-21 20:56:04,126 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 5.2) internal successors, (78), 15 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2024-11-21 20:56:04,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 20:56:04,128 INFO L225 Difference]: With dead ends: 494 [2024-11-21 20:56:04,128 INFO L226 Difference]: Without dead ends: 323 [2024-11-21 20:56:04,128 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 243 GetRequests, 219 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=162, Invalid=390, Unknown=0, NotChecked=0, Total=552 [2024-11-21 20:56:04,129 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 248 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 261 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 248 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-21 20:56:04,129 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [248 Valid, 100 Invalid, 302 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 261 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-21 20:56:04,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2024-11-21 20:56:04,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 232. [2024-11-21 20:56:04,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 231 states have (on average 1.2077922077922079) internal successors, (279), 231 states have internal predecessors, (279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 20:56:04,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 279 transitions. [2024-11-21 20:56:04,161 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 279 transitions. Word has length 114 [2024-11-21 20:56:04,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 20:56:04,161 INFO L471 AbstractCegarLoop]: Abstraction has 232 states and 279 transitions. [2024-11-21 20:56:04,162 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 5.2) internal successors, (78), 15 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 20:56:04,162 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 279 transitions. [2024-11-21 20:56:04,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2024-11-21 20:56:04,163 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 20:56:04,163 INFO L215 NwaCegarLoop]: trace histogram [80, 8, 8, 8, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 20:56:04,171 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-21 20:56:04,364 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 20:56:04,364 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 20:56:04,364 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 20:56:04,364 INFO L85 PathProgramCache]: Analyzing trace with hash 1675809500, now seen corresponding path program 5 times [2024-11-21 20:56:04,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 20:56:04,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349232747] [2024-11-21 20:56:04,365 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-21 20:56:04,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 20:56:04,454 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2024-11-21 20:56:04,454 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-21 20:56:04,649 INFO L134 CoverageAnalysis]: Checked inductivity of 4019 backedges. 2539 proven. 135 refuted. 0 times theorem prover too weak. 1345 trivial. 0 not checked. [2024-11-21 20:56:04,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 20:56:04,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349232747] [2024-11-21 20:56:04,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [349232747] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-21 20:56:04,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [874886499] [2024-11-21 20:56:04,650 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-21 20:56:04,650 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 20:56:04,650 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 20:56:04,652 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-21 20:56:04,653 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-21 20:56:08,237 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2024-11-21 20:56:08,238 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-21 20:56:08,243 INFO L255 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-21 20:56:08,248 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-21 20:56:08,524 INFO L134 CoverageAnalysis]: Checked inductivity of 4019 backedges. 2539 proven. 135 refuted. 0 times theorem prover too weak. 1345 trivial. 0 not checked. [2024-11-21 20:56:08,524 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-21 20:56:08,682 INFO L134 CoverageAnalysis]: Checked inductivity of 4019 backedges. 2539 proven. 135 refuted. 0 times theorem prover too weak. 1345 trivial. 0 not checked. [2024-11-21 20:56:08,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [874886499] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-21 20:56:08,682 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-21 20:56:08,682 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 40 [2024-11-21 20:56:08,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301335602] [2024-11-21 20:56:08,682 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-21 20:56:08,683 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2024-11-21 20:56:08,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 20:56:08,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2024-11-21 20:56:08,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=441, Invalid=1119, Unknown=0, NotChecked=0, Total=1560 [2024-11-21 20:56:08,684 INFO L87 Difference]: Start difference. First operand 232 states and 279 transitions. Second operand has 40 states, 40 states have (on average 2.425) internal successors, (97), 40 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 20:56:10,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 20:56:10,907 INFO L93 Difference]: Finished difference Result 1646 states and 1984 transitions. [2024-11-21 20:56:10,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 146 states. [2024-11-21 20:56:10,908 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 2.425) internal successors, (97), 40 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 166 [2024-11-21 20:56:10,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 20:56:10,914 INFO L225 Difference]: With dead ends: 1646 [2024-11-21 20:56:10,914 INFO L226 Difference]: Without dead ends: 1446 [2024-11-21 20:56:10,921 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 573 GetRequests, 408 SyntacticMatches, 3 SemanticMatches, 162 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11407 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=7081, Invalid=19651, Unknown=0, NotChecked=0, Total=26732 [2024-11-21 20:56:10,921 INFO L432 NwaCegarLoop]: 52 mSDtfsCounter, 441 mSDsluCounter, 618 mSDsCounter, 0 mSdLazyCounter, 1092 mSolverCounterSat, 155 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 441 SdHoareTripleChecker+Valid, 670 SdHoareTripleChecker+Invalid, 1247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 155 IncrementalHoareTripleChecker+Valid, 1092 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-21 20:56:10,922 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [441 Valid, 670 Invalid, 1247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [155 Valid, 1092 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-21 20:56:10,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1446 states. [2024-11-21 20:56:11,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1446 to 1215. [2024-11-21 20:56:11,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1215 states, 1214 states have (on average 1.257001647446458) internal successors, (1526), 1214 states have internal predecessors, (1526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 20:56:11,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1215 states to 1215 states and 1526 transitions. [2024-11-21 20:56:11,110 INFO L78 Accepts]: Start accepts. Automaton has 1215 states and 1526 transitions. Word has length 166 [2024-11-21 20:56:11,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 20:56:11,110 INFO L471 AbstractCegarLoop]: Abstraction has 1215 states and 1526 transitions. [2024-11-21 20:56:11,111 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 2.425) internal successors, (97), 40 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 20:56:11,111 INFO L276 IsEmpty]: Start isEmpty. Operand 1215 states and 1526 transitions. [2024-11-21 20:56:11,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 375 [2024-11-21 20:56:11,114 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 20:56:11,114 INFO L215 NwaCegarLoop]: trace histogram [240, 24, 24, 24, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 20:56:11,126 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-21 20:56:11,314 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-21 20:56:11,314 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 20:56:11,315 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 20:56:11,315 INFO L85 PathProgramCache]: Analyzing trace with hash 309514716, now seen corresponding path program 6 times [2024-11-21 20:56:11,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 20:56:11,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338314823] [2024-11-21 20:56:11,315 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-21 20:56:11,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 20:56:11,395 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-11-21 20:56:11,395 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-21 20:56:11,438 INFO L134 CoverageAnalysis]: Checked inductivity of 35467 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 35466 trivial. 0 not checked. [2024-11-21 20:56:11,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 20:56:11,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338314823] [2024-11-21 20:56:11,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [338314823] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-21 20:56:11,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [451167520] [2024-11-21 20:56:11,439 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-21 20:56:11,439 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 20:56:11,439 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 20:56:11,441 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-21 20:56:11,442 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-21 20:56:11,675 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-11-21 20:56:11,676 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-21 20:56:11,677 INFO L255 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-21 20:56:11,683 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-21 20:56:11,975 INFO L134 CoverageAnalysis]: Checked inductivity of 35467 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 35466 trivial. 0 not checked. [2024-11-21 20:56:11,975 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-21 20:56:12,224 INFO L134 CoverageAnalysis]: Checked inductivity of 35467 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 35466 trivial. 0 not checked. [2024-11-21 20:56:12,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [451167520] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-21 20:56:12,224 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-21 20:56:12,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-11-21 20:56:12,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644651863] [2024-11-21 20:56:12,224 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-21 20:56:12,225 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-21 20:56:12,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 20:56:12,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-21 20:56:12,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2024-11-21 20:56:12,226 INFO L87 Difference]: Start difference. First operand 1215 states and 1526 transitions. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 20:56:12,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 20:56:12,660 INFO L93 Difference]: Finished difference Result 3734 states and 4945 transitions. [2024-11-21 20:56:12,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-21 20:56:12,661 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 374 [2024-11-21 20:56:12,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 20:56:12,670 INFO L225 Difference]: With dead ends: 3734 [2024-11-21 20:56:12,670 INFO L226 Difference]: Without dead ends: 3245 [2024-11-21 20:56:12,671 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 753 GetRequests, 743 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2024-11-21 20:56:12,672 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 168 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-21 20:56:12,672 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [168 Valid, 115 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-21 20:56:12,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3245 states. [2024-11-21 20:56:12,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3245 to 1236. [2024-11-21 20:56:12,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1236 states, 1235 states have (on average 1.2574898785425102) internal successors, (1553), 1235 states have internal predecessors, (1553), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 20:56:12,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1236 states to 1236 states and 1553 transitions. [2024-11-21 20:56:12,858 INFO L78 Accepts]: Start accepts. Automaton has 1236 states and 1553 transitions. Word has length 374 [2024-11-21 20:56:12,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 20:56:12,859 INFO L471 AbstractCegarLoop]: Abstraction has 1236 states and 1553 transitions. [2024-11-21 20:56:12,859 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 20:56:12,859 INFO L276 IsEmpty]: Start isEmpty. Operand 1236 states and 1553 transitions. [2024-11-21 20:56:12,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 396 [2024-11-21 20:56:12,866 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 20:56:12,866 INFO L215 NwaCegarLoop]: trace histogram [240, 24, 24, 24, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 20:56:12,873 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-21 20:56:13,066 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-21 20:56:13,067 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 20:56:13,068 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 20:56:13,068 INFO L85 PathProgramCache]: Analyzing trace with hash 2107825101, now seen corresponding path program 7 times [2024-11-21 20:56:13,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 20:56:13,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498411568] [2024-11-21 20:56:13,068 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-21 20:56:13,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 20:56:13,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 20:56:14,233 INFO L134 CoverageAnalysis]: Checked inductivity of 35542 backedges. 2814 proven. 55 refuted. 0 times theorem prover too weak. 32673 trivial. 0 not checked. [2024-11-21 20:56:14,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 20:56:14,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498411568] [2024-11-21 20:56:14,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [498411568] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-21 20:56:14,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1096001447] [2024-11-21 20:56:14,233 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-21 20:56:14,233 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 20:56:14,234 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 20:56:14,236 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-21 20:56:14,237 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-21 20:56:14,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 20:56:14,729 INFO L255 TraceCheckSpWp]: Trace formula consists of 2591 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-21 20:56:14,733 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-21 20:56:14,837 INFO L134 CoverageAnalysis]: Checked inductivity of 35542 backedges. 2814 proven. 55 refuted. 0 times theorem prover too weak. 32673 trivial. 0 not checked. [2024-11-21 20:56:14,837 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-21 20:56:15,022 INFO L134 CoverageAnalysis]: Checked inductivity of 35542 backedges. 2814 proven. 55 refuted. 0 times theorem prover too weak. 32673 trivial. 0 not checked. [2024-11-21 20:56:15,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1096001447] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-21 20:56:15,023 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-21 20:56:15,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 37 [2024-11-21 20:56:15,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858738790] [2024-11-21 20:56:15,023 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-21 20:56:15,024 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2024-11-21 20:56:15,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 20:56:15,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2024-11-21 20:56:15,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=579, Invalid=753, Unknown=0, NotChecked=0, Total=1332 [2024-11-21 20:56:15,025 INFO L87 Difference]: Start difference. First operand 1236 states and 1553 transitions. Second operand has 37 states, 37 states have (on average 2.081081081081081) internal successors, (77), 37 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 20:56:15,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 20:56:15,588 INFO L93 Difference]: Finished difference Result 2949 states and 4134 transitions. [2024-11-21 20:56:15,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-21 20:56:15,588 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 2.081081081081081) internal successors, (77), 37 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 395 [2024-11-21 20:56:15,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 20:56:15,593 INFO L225 Difference]: With dead ends: 2949 [2024-11-21 20:56:15,593 INFO L226 Difference]: Without dead ends: 1730 [2024-11-21 20:56:15,595 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 813 GetRequests, 767 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 745 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=876, Invalid=1380, Unknown=0, NotChecked=0, Total=2256 [2024-11-21 20:56:15,595 INFO L432 NwaCegarLoop]: 22 mSDtfsCounter, 610 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 188 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 610 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 353 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 188 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-21 20:56:15,595 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [610 Valid, 141 Invalid, 353 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [188 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-21 20:56:15,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1730 states. [2024-11-21 20:56:15,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1730 to 1604. [2024-11-21 20:56:15,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1604 states, 1603 states have (on average 1.1665626949469745) internal successors, (1870), 1603 states have internal predecessors, (1870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 20:56:15,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1604 states to 1604 states and 1870 transitions. [2024-11-21 20:56:15,857 INFO L78 Accepts]: Start accepts. Automaton has 1604 states and 1870 transitions. Word has length 395 [2024-11-21 20:56:15,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 20:56:15,857 INFO L471 AbstractCegarLoop]: Abstraction has 1604 states and 1870 transitions. [2024-11-21 20:56:15,857 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 2.081081081081081) internal successors, (77), 37 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 20:56:15,857 INFO L276 IsEmpty]: Start isEmpty. Operand 1604 states and 1870 transitions. [2024-11-21 20:56:15,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 984 [2024-11-21 20:56:15,880 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 20:56:15,880 INFO L215 NwaCegarLoop]: trace histogram [792, 36, 36, 36, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 20:56:15,891 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-21 20:56:16,081 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 20:56:16,081 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 20:56:16,082 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 20:56:16,082 INFO L85 PathProgramCache]: Analyzing trace with hash -1104539259, now seen corresponding path program 8 times [2024-11-21 20:56:16,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 20:56:16,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1435345826] [2024-11-21 20:56:16,082 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-21 20:56:16,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 20:56:16,675 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-21 20:56:16,675 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-21 20:56:20,204 INFO L134 CoverageAnalysis]: Checked inductivity of 343960 backedges. 18558 proven. 253 refuted. 0 times theorem prover too weak. 325149 trivial. 0 not checked. [2024-11-21 20:56:20,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 20:56:20,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1435345826] [2024-11-21 20:56:20,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1435345826] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-21 20:56:20,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [76316044] [2024-11-21 20:56:20,204 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-21 20:56:20,205 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 20:56:20,205 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 20:56:20,206 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-21 20:56:20,207 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-21 20:56:21,406 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-21 20:56:21,406 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-21 20:56:21,435 INFO L255 TraceCheckSpWp]: Trace formula consists of 7631 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-21 20:56:21,447 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-21 20:56:21,789 INFO L134 CoverageAnalysis]: Checked inductivity of 343960 backedges. 18558 proven. 253 refuted. 0 times theorem prover too weak. 325149 trivial. 0 not checked. [2024-11-21 20:56:21,789 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-21 20:56:22,374 INFO L134 CoverageAnalysis]: Checked inductivity of 343960 backedges. 18558 proven. 253 refuted. 0 times theorem prover too weak. 325149 trivial. 0 not checked. [2024-11-21 20:56:22,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [76316044] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-21 20:56:22,375 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-21 20:56:22,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26, 26] total 73 [2024-11-21 20:56:22,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576074312] [2024-11-21 20:56:22,375 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-21 20:56:22,376 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 73 states [2024-11-21 20:56:22,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 20:56:22,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2024-11-21 20:56:22,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2307, Invalid=2949, Unknown=0, NotChecked=0, Total=5256 [2024-11-21 20:56:22,379 INFO L87 Difference]: Start difference. First operand 1604 states and 1870 transitions. Second operand has 73 states, 73 states have (on average 1.547945205479452) internal successors, (113), 73 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 20:56:24,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 20:56:24,048 INFO L93 Difference]: Finished difference Result 4961 states and 6923 transitions. [2024-11-21 20:56:24,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2024-11-21 20:56:24,049 INFO L78 Accepts]: Start accepts. Automaton has has 73 states, 73 states have (on average 1.547945205479452) internal successors, (113), 73 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 983 [2024-11-21 20:56:24,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 20:56:24,058 INFO L225 Difference]: With dead ends: 4961 [2024-11-21 20:56:24,059 INFO L226 Difference]: Without dead ends: 3386 [2024-11-21 20:56:24,062 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2013 GetRequests, 1919 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3217 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=3480, Invalid=5640, Unknown=0, NotChecked=0, Total=9120 [2024-11-21 20:56:24,063 INFO L432 NwaCegarLoop]: 22 mSDtfsCounter, 925 mSDsluCounter, 261 mSDsCounter, 0 mSdLazyCounter, 330 mSolverCounterSat, 360 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 925 SdHoareTripleChecker+Valid, 283 SdHoareTripleChecker+Invalid, 690 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 360 IncrementalHoareTripleChecker+Valid, 330 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-21 20:56:24,063 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [925 Valid, 283 Invalid, 690 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [360 Valid, 330 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-21 20:56:24,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3386 states. [2024-11-21 20:56:24,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3386 to 3116. [2024-11-21 20:56:24,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3116 states, 3115 states have (on average 1.155056179775281) internal successors, (3598), 3115 states have internal predecessors, (3598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 20:56:24,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3116 states to 3116 states and 3598 transitions. [2024-11-21 20:56:24,513 INFO L78 Accepts]: Start accepts. Automaton has 3116 states and 3598 transitions. Word has length 983 [2024-11-21 20:56:24,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 20:56:24,513 INFO L471 AbstractCegarLoop]: Abstraction has 3116 states and 3598 transitions. [2024-11-21 20:56:24,513 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 73 states, 73 states have (on average 1.547945205479452) internal successors, (113), 73 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 20:56:24,514 INFO L276 IsEmpty]: Start isEmpty. Operand 3116 states and 3598 transitions. [2024-11-21 20:56:24,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1848 [2024-11-21 20:56:24,527 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 20:56:24,527 INFO L215 NwaCegarLoop]: trace histogram [1656, 36, 36, 36, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 20:56:24,547 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-21 20:56:24,728 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-21 20:56:24,728 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 20:56:24,729 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 20:56:24,729 INFO L85 PathProgramCache]: Analyzing trace with hash -256297595, now seen corresponding path program 9 times [2024-11-21 20:56:24,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 20:56:24,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067461486] [2024-11-21 20:56:24,729 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-21 20:56:24,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 20:56:25,173 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2024-11-21 20:56:25,173 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-21 20:56:25,290 INFO L134 CoverageAnalysis]: Checked inductivity of 1432168 backedges. 23 proven. 1 refuted. 0 times theorem prover too weak. 1432144 trivial. 0 not checked. [2024-11-21 20:56:25,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 20:56:25,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067461486] [2024-11-21 20:56:25,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2067461486] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-21 20:56:25,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [620299384] [2024-11-21 20:56:25,291 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-21 20:56:25,291 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 20:56:25,291 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 20:56:25,293 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-21 20:56:25,294 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-21 20:56:26,721 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2024-11-21 20:56:26,721 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-21 20:56:26,728 INFO L255 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-21 20:56:26,743 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-21 20:56:28,078 INFO L134 CoverageAnalysis]: Checked inductivity of 1432168 backedges. 29 proven. 1 refuted. 0 times theorem prover too weak. 1432138 trivial. 0 not checked. [2024-11-21 20:56:28,079 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-21 20:56:29,410 INFO L134 CoverageAnalysis]: Checked inductivity of 1432168 backedges. 17 proven. 13 refuted. 0 times theorem prover too weak. 1432138 trivial. 0 not checked. [2024-11-21 20:56:29,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [620299384] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-21 20:56:29,410 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-21 20:56:29,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-21 20:56:29,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971094856] [2024-11-21 20:56:29,413 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-21 20:56:29,415 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-21 20:56:29,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 20:56:29,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-21 20:56:29,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-11-21 20:56:29,417 INFO L87 Difference]: Start difference. First operand 3116 states and 3598 transitions. Second operand has 11 states, 11 states have (on average 8.090909090909092) internal successors, (89), 11 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 20:56:30,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 20:56:30,300 INFO L93 Difference]: Finished difference Result 4476 states and 5409 transitions. [2024-11-21 20:56:30,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-21 20:56:30,301 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.090909090909092) internal successors, (89), 11 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1847 [2024-11-21 20:56:30,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 20:56:30,314 INFO L225 Difference]: With dead ends: 4476 [2024-11-21 20:56:30,314 INFO L226 Difference]: Without dead ends: 3144 [2024-11-21 20:56:30,316 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3704 GetRequests, 3688 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=108, Invalid=198, Unknown=0, NotChecked=0, Total=306 [2024-11-21 20:56:30,317 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 192 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 192 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-21 20:56:30,317 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [192 Valid, 89 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-21 20:56:30,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3144 states. [2024-11-21 20:56:30,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3144 to 3132. [2024-11-21 20:56:30,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3132 states, 3131 states have (on average 1.154263813478122) internal successors, (3614), 3131 states have internal predecessors, (3614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 20:56:30,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3132 states to 3132 states and 3614 transitions. [2024-11-21 20:56:30,837 INFO L78 Accepts]: Start accepts. Automaton has 3132 states and 3614 transitions. Word has length 1847 [2024-11-21 20:56:30,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 20:56:30,838 INFO L471 AbstractCegarLoop]: Abstraction has 3132 states and 3614 transitions. [2024-11-21 20:56:30,838 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.090909090909092) internal successors, (89), 11 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 20:56:30,839 INFO L276 IsEmpty]: Start isEmpty. Operand 3132 states and 3614 transitions. [2024-11-21 20:56:30,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1864 [2024-11-21 20:56:30,852 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 20:56:30,852 INFO L215 NwaCegarLoop]: trace histogram [1656, 36, 36, 36, 16, 8, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 20:56:30,861 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-21 20:56:31,053 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 20:56:31,053 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 20:56:31,053 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 20:56:31,053 INFO L85 PathProgramCache]: Analyzing trace with hash -1170557259, now seen corresponding path program 10 times [2024-11-21 20:56:31,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 20:56:31,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343911334] [2024-11-21 20:56:31,054 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-21 20:56:31,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 20:56:31,487 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-21 20:56:31,487 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-21 20:56:31,583 INFO L134 CoverageAnalysis]: Checked inductivity of 1432368 backedges. 47 proven. 3 refuted. 0 times theorem prover too weak. 1432318 trivial. 0 not checked. [2024-11-21 20:56:31,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 20:56:31,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343911334] [2024-11-21 20:56:31,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [343911334] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-21 20:56:31,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1365087176] [2024-11-21 20:56:31,584 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-21 20:56:31,584 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 20:56:31,584 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 20:56:31,587 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-21 20:56:31,588 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-21 20:56:33,131 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-21 20:56:33,131 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-21 20:56:33,139 INFO L255 TraceCheckSpWp]: Trace formula consists of 566 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-21 20:56:33,153 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-21 20:56:33,266 INFO L134 CoverageAnalysis]: Checked inductivity of 1432368 backedges. 100 proven. 5 refuted. 0 times theorem prover too weak. 1432263 trivial. 0 not checked. [2024-11-21 20:56:33,266 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-21 20:56:33,346 INFO L134 CoverageAnalysis]: Checked inductivity of 1432368 backedges. 100 proven. 5 refuted. 0 times theorem prover too weak. 1432263 trivial. 0 not checked. [2024-11-21 20:56:33,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1365087176] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-21 20:56:33,346 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-21 20:56:33,347 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9, 9] total 19 [2024-11-21 20:56:33,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589014022] [2024-11-21 20:56:33,347 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-21 20:56:33,348 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-21 20:56:33,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 20:56:33,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-21 20:56:33,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=257, Unknown=0, NotChecked=0, Total=342 [2024-11-21 20:56:33,349 INFO L87 Difference]: Start difference. First operand 3132 states and 3614 transitions. Second operand has 19 states, 19 states have (on average 3.6842105263157894) internal successors, (70), 19 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 20:56:34,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 20:56:34,254 INFO L93 Difference]: Finished difference Result 4593 states and 5538 transitions. [2024-11-21 20:56:34,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2024-11-21 20:56:34,254 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.6842105263157894) internal successors, (70), 19 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1863 [2024-11-21 20:56:34,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 20:56:34,266 INFO L225 Difference]: With dead ends: 4593 [2024-11-21 20:56:34,266 INFO L226 Difference]: Without dead ends: 3252 [2024-11-21 20:56:34,268 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3773 GetRequests, 3724 SyntacticMatches, 2 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 690 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=482, Invalid=1870, Unknown=0, NotChecked=0, Total=2352 [2024-11-21 20:56:34,270 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 115 mSDsluCounter, 209 mSDsCounter, 0 mSdLazyCounter, 426 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 242 SdHoareTripleChecker+Invalid, 472 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 426 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-21 20:56:34,270 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 242 Invalid, 472 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 426 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-21 20:56:34,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3252 states. [2024-11-21 20:56:34,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3252 to 3236. [2024-11-21 20:56:34,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3236 states, 3235 states have (on average 1.1542503863987634) internal successors, (3734), 3235 states have internal predecessors, (3734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 20:56:34,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3236 states to 3236 states and 3734 transitions. [2024-11-21 20:56:34,847 INFO L78 Accepts]: Start accepts. Automaton has 3236 states and 3734 transitions. Word has length 1863 [2024-11-21 20:56:34,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 20:56:34,848 INFO L471 AbstractCegarLoop]: Abstraction has 3236 states and 3734 transitions. [2024-11-21 20:56:34,848 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.6842105263157894) internal successors, (70), 19 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 20:56:34,848 INFO L276 IsEmpty]: Start isEmpty. Operand 3236 states and 3734 transitions. [2024-11-21 20:56:34,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1968 [2024-11-21 20:56:34,862 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 20:56:34,863 INFO L215 NwaCegarLoop]: trace histogram [1656, 64, 36, 36, 36, 16, 16, 16, 16, 8, 8, 8, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 20:56:34,874 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-21 20:56:35,063 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 20:56:35,063 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 20:56:35,064 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 20:56:35,064 INFO L85 PathProgramCache]: Analyzing trace with hash 1971071109, now seen corresponding path program 11 times [2024-11-21 20:56:35,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 20:56:35,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1318645744] [2024-11-21 20:56:35,064 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-21 20:56:35,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 20:57:10,770 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 171 check-sat command(s) [2024-11-21 20:57:10,770 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-21 20:57:14,869 INFO L134 CoverageAnalysis]: Checked inductivity of 1435884 backedges. 896594 proven. 79651 refuted. 0 times theorem prover too weak. 459639 trivial. 0 not checked. [2024-11-21 20:57:14,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 20:57:14,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1318645744] [2024-11-21 20:57:14,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1318645744] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-21 20:57:14,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1816882520] [2024-11-21 20:57:14,870 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-21 20:57:14,870 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 20:57:14,870 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 20:57:14,871 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-21 20:57:14,872 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process