./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-industry-pattern/array_shadowinit.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 61a67961 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 /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-industry-pattern/array_shadowinit.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 03931b69e9073178e54f20b91a2b2a66154a89c69758aa4d312927278c5c0104 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.fs.cvc5-61a6796-m [2024-10-13 22:06:43,784 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-13 22:06:43,851 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-13 22:06:43,856 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-13 22:06:43,856 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-13 22:06:43,895 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-13 22:06:43,896 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-13 22:06:43,896 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-13 22:06:43,897 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-13 22:06:43,897 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-13 22:06:43,897 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-13 22:06:43,898 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-13 22:06:43,899 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-13 22:06:43,899 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-13 22:06:43,900 INFO L153 SettingsManager]: * Use SBE=true [2024-10-13 22:06:43,901 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-13 22:06:43,901 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-13 22:06:43,901 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-13 22:06:43,901 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-13 22:06:43,902 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-13 22:06:43,902 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-13 22:06:43,905 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-13 22:06:43,905 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-13 22:06:43,906 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-13 22:06:43,906 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-13 22:06:43,906 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-13 22:06:43,906 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-13 22:06:43,906 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-13 22:06:43,907 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-13 22:06:43,907 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-13 22:06:43,907 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-13 22:06:43,907 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-13 22:06:43,907 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 22:06:43,907 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-13 22:06:43,907 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-13 22:06:43,908 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-13 22:06:43,908 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-13 22:06:43,908 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-13 22:06:43,908 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-13 22:06:43,908 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-13 22:06:43,908 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-13 22:06:43,909 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-13 22:06:43,909 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 03931b69e9073178e54f20b91a2b2a66154a89c69758aa4d312927278c5c0104 [2024-10-13 22:06:44,102 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-13 22:06:44,121 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-13 22:06:44,124 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-13 22:06:44,124 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-13 22:06:44,125 INFO L274 PluginConnector]: CDTParser initialized [2024-10-13 22:06:44,126 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-industry-pattern/array_shadowinit.i [2024-10-13 22:06:45,315 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-13 22:06:45,451 INFO L384 CDTParser]: Found 1 translation units. [2024-10-13 22:06:45,452 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-industry-pattern/array_shadowinit.i [2024-10-13 22:06:45,458 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9b62690bd/9315dd34d68043368ddb9aa23eea3c00/FLAG437f57da9 [2024-10-13 22:06:45,869 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9b62690bd/9315dd34d68043368ddb9aa23eea3c00 [2024-10-13 22:06:45,871 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-13 22:06:45,872 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-13 22:06:45,873 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-13 22:06:45,873 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-13 22:06:45,878 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-13 22:06:45,878 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 10:06:45" (1/1) ... [2024-10-13 22:06:45,879 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@414ba4ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:06:45, skipping insertion in model container [2024-10-13 22:06:45,879 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 10:06:45" (1/1) ... [2024-10-13 22:06:45,892 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-13 22:06:46,002 WARN L248 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-industry-pattern/array_shadowinit.i[809,822] [2024-10-13 22:06:46,012 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 22:06:46,018 INFO L200 MainTranslator]: Completed pre-run [2024-10-13 22:06:46,026 WARN L248 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-industry-pattern/array_shadowinit.i[809,822] [2024-10-13 22:06:46,029 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 22:06:46,040 INFO L204 MainTranslator]: Completed translation [2024-10-13 22:06:46,040 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:06:46 WrapperNode [2024-10-13 22:06:46,040 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-13 22:06:46,041 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-13 22:06:46,041 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-13 22:06:46,041 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-13 22:06:46,046 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:06:46" (1/1) ... [2024-10-13 22:06:46,051 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:06:46" (1/1) ... [2024-10-13 22:06:46,063 INFO L138 Inliner]: procedures = 16, calls = 11, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 45 [2024-10-13 22:06:46,064 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-13 22:06:46,064 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-13 22:06:46,064 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-13 22:06:46,065 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-13 22:06:46,071 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:06:46" (1/1) ... [2024-10-13 22:06:46,072 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:06:46" (1/1) ... [2024-10-13 22:06:46,073 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:06:46" (1/1) ... [2024-10-13 22:06:46,081 INFO L175 MemorySlicer]: Split 4 memory accesses to 2 slices as follows [2, 2]. 50 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2024-10-13 22:06:46,081 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:06:46" (1/1) ... [2024-10-13 22:06:46,081 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:06:46" (1/1) ... [2024-10-13 22:06:46,083 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:06:46" (1/1) ... [2024-10-13 22:06:46,085 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:06:46" (1/1) ... [2024-10-13 22:06:46,089 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:06:46" (1/1) ... [2024-10-13 22:06:46,090 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:06:46" (1/1) ... [2024-10-13 22:06:46,091 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-13 22:06:46,091 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-13 22:06:46,091 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-13 22:06:46,092 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-13 22:06:46,092 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:06:46" (1/1) ... [2024-10-13 22:06:46,097 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 22:06:46,107 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 22:06:46,120 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) [2024-10-13 22:06:46,123 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 [2024-10-13 22:06:46,157 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-13 22:06:46,157 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-13 22:06:46,157 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-13 22:06:46,157 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-10-13 22:06:46,157 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-13 22:06:46,157 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-13 22:06:46,157 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-13 22:06:46,159 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-13 22:06:46,159 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-13 22:06:46,159 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-13 22:06:46,159 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-13 22:06:46,263 INFO L238 CfgBuilder]: Building ICFG [2024-10-13 22:06:46,264 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-13 22:06:46,349 INFO L? ?]: Removed 8 outVars from TransFormulas that were not future-live. [2024-10-13 22:06:46,349 INFO L287 CfgBuilder]: Performing block encoding [2024-10-13 22:06:46,365 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-13 22:06:46,365 INFO L314 CfgBuilder]: Removed 2 assume(true) statements. [2024-10-13 22:06:46,366 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 10:06:46 BoogieIcfgContainer [2024-10-13 22:06:46,366 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-13 22:06:46,367 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-13 22:06:46,367 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-13 22:06:46,370 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-13 22:06:46,371 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 10:06:45" (1/3) ... [2024-10-13 22:06:46,371 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c45bfe5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 10:06:46, skipping insertion in model container [2024-10-13 22:06:46,371 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:06:46" (2/3) ... [2024-10-13 22:06:46,371 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c45bfe5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 10:06:46, skipping insertion in model container [2024-10-13 22:06:46,372 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 10:06:46" (3/3) ... [2024-10-13 22:06:46,373 INFO L112 eAbstractionObserver]: Analyzing ICFG array_shadowinit.i [2024-10-13 22:06:46,384 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-13 22:06:46,384 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-13 22:06:46,420 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-13 22:06:46,424 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;@7f4ba45d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-13 22:06:46,425 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-13 22:06:46,427 INFO L276 IsEmpty]: Start isEmpty. Operand has 12 states, 10 states have (on average 1.7) internal successors, (17), 11 states have internal predecessors, (17), 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) [2024-10-13 22:06:46,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-10-13 22:06:46,431 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 22:06:46,431 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-10-13 22:06:46,432 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 22:06:46,435 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 22:06:46,436 INFO L85 PathProgramCache]: Analyzing trace with hash -968160633, now seen corresponding path program 1 times [2024-10-13 22:06:46,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 22:06:46,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107244757] [2024-10-13 22:06:46,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 22:06:46,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 22:06:46,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 22:06:46,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 22:06:46,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 22:06:46,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107244757] [2024-10-13 22:06:46,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2107244757] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 22:06:46,556 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 22:06:46,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 22:06:46,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492147945] [2024-10-13 22:06:46,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 22:06:46,561 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-13 22:06:46,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 22:06:46,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-13 22:06:46,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-13 22:06:46,579 INFO L87 Difference]: Start difference. First operand has 12 states, 10 states have (on average 1.7) internal successors, (17), 11 states have internal predecessors, (17), 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 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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) [2024-10-13 22:06:46,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 22:06:46,592 INFO L93 Difference]: Finished difference Result 21 states and 28 transitions. [2024-10-13 22:06:46,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-13 22:06:46,593 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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 7 [2024-10-13 22:06:46,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 22:06:46,598 INFO L225 Difference]: With dead ends: 21 [2024-10-13 22:06:46,598 INFO L226 Difference]: Without dead ends: 9 [2024-10-13 22:06:46,601 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 [2024-10-13 22:06:46,603 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-13 22:06:46,607 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 12 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-13 22:06:46,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2024-10-13 22:06:46,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2024-10-13 22:06:46,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.25) internal successors, (10), 8 states have internal predecessors, (10), 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) [2024-10-13 22:06:46,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 10 transitions. [2024-10-13 22:06:46,628 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 10 transitions. Word has length 7 [2024-10-13 22:06:46,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 22:06:46,628 INFO L471 AbstractCegarLoop]: Abstraction has 9 states and 10 transitions. [2024-10-13 22:06:46,628 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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) [2024-10-13 22:06:46,628 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 10 transitions. [2024-10-13 22:06:46,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-10-13 22:06:46,628 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 22:06:46,629 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-10-13 22:06:46,629 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-13 22:06:46,629 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 22:06:46,629 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 22:06:46,629 INFO L85 PathProgramCache]: Analyzing trace with hash -971854717, now seen corresponding path program 1 times [2024-10-13 22:06:46,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 22:06:46,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738710810] [2024-10-13 22:06:46,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 22:06:46,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 22:06:46,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 22:06:46,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 22:06:46,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 22:06:46,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738710810] [2024-10-13 22:06:46,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [738710810] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 22:06:46,719 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 22:06:46,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 22:06:46,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190578201] [2024-10-13 22:06:46,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 22:06:46,720 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 22:06:46,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 22:06:46,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 22:06:46,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 22:06:46,721 INFO L87 Difference]: Start difference. First operand 9 states and 10 transitions. Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 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) [2024-10-13 22:06:46,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 22:06:46,738 INFO L93 Difference]: Finished difference Result 16 states and 18 transitions. [2024-10-13 22:06:46,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 22:06:46,738 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 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 7 [2024-10-13 22:06:46,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 22:06:46,739 INFO L225 Difference]: With dead ends: 16 [2024-10-13 22:06:46,739 INFO L226 Difference]: Without dead ends: 10 [2024-10-13 22:06:46,739 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 22:06:46,740 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 0 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-13 22:06:46,741 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 11 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-13 22:06:46,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2024-10-13 22:06:46,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2024-10-13 22:06:46,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 9 states have internal predecessors, (11), 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) [2024-10-13 22:06:46,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 11 transitions. [2024-10-13 22:06:46,745 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 11 transitions. Word has length 7 [2024-10-13 22:06:46,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 22:06:46,746 INFO L471 AbstractCegarLoop]: Abstraction has 10 states and 11 transitions. [2024-10-13 22:06:46,746 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 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) [2024-10-13 22:06:46,746 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 11 transitions. [2024-10-13 22:06:46,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-10-13 22:06:46,746 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 22:06:46,746 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 22:06:46,746 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-13 22:06:46,746 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 22:06:46,747 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 22:06:46,747 INFO L85 PathProgramCache]: Analyzing trace with hash -11279011, now seen corresponding path program 1 times [2024-10-13 22:06:46,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 22:06:46,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950631317] [2024-10-13 22:06:46,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 22:06:46,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 22:06:46,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 22:06:47,051 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 22:06:47,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 22:06:47,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950631317] [2024-10-13 22:06:47,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [950631317] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 22:06:47,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [883093505] [2024-10-13 22:06:47,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 22:06:47,052 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 22:06:47,052 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 22:06:47,054 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) [2024-10-13 22:06:47,055 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-13 22:06:47,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 22:06:47,106 INFO L255 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-13 22:06:47,110 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 22:06:47,158 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-10-13 22:06:47,210 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 22:06:47,213 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 22:06:47,266 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 12 [2024-10-13 22:06:47,270 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 12 [2024-10-13 22:06:47,281 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 22:06:47,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [883093505] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 22:06:47,282 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 22:06:47,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 10 [2024-10-13 22:06:47,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459770843] [2024-10-13 22:06:47,283 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 22:06:47,285 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-13 22:06:47,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 22:06:47,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-13 22:06:47,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-10-13 22:06:47,286 INFO L87 Difference]: Start difference. First operand 10 states and 11 transitions. Second operand has 10 states, 10 states have (on average 1.5) internal successors, (15), 10 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) [2024-10-13 22:06:47,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 22:06:47,339 INFO L93 Difference]: Finished difference Result 15 states and 16 transitions. [2024-10-13 22:06:47,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-13 22:06:47,340 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.5) internal successors, (15), 10 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 8 [2024-10-13 22:06:47,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 22:06:47,341 INFO L225 Difference]: With dead ends: 15 [2024-10-13 22:06:47,341 INFO L226 Difference]: Without dead ends: 13 [2024-10-13 22:06:47,341 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-10-13 22:06:47,342 INFO L432 NwaCegarLoop]: 5 mSDtfsCounter, 20 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-13 22:06:47,342 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 20 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-13 22:06:47,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2024-10-13 22:06:47,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 12. [2024-10-13 22:06:47,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.1818181818181819) internal successors, (13), 11 states have internal predecessors, (13), 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) [2024-10-13 22:06:47,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 13 transitions. [2024-10-13 22:06:47,348 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 13 transitions. Word has length 8 [2024-10-13 22:06:47,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 22:06:47,348 INFO L471 AbstractCegarLoop]: Abstraction has 12 states and 13 transitions. [2024-10-13 22:06:47,349 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 1.5) internal successors, (15), 10 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) [2024-10-13 22:06:47,349 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 13 transitions. [2024-10-13 22:06:47,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-10-13 22:06:47,350 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 22:06:47,350 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 22:06:47,383 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-13 22:06:47,554 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 22:06:47,555 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 22:06:47,556 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 22:06:47,556 INFO L85 PathProgramCache]: Analyzing trace with hash -1000774144, now seen corresponding path program 1 times [2024-10-13 22:06:47,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 22:06:47,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922141709] [2024-10-13 22:06:47,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 22:06:47,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 22:06:47,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 22:06:47,651 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 22:06:47,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 22:06:47,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922141709] [2024-10-13 22:06:47,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [922141709] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 22:06:47,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1651024505] [2024-10-13 22:06:47,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 22:06:47,654 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 22:06:47,654 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 22:06:47,656 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) [2024-10-13 22:06:47,657 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-13 22:06:47,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 22:06:47,704 INFO L255 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-13 22:06:47,705 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 22:06:47,752 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 22:06:47,753 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 22:06:47,792 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 22:06:47,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1651024505] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 22:06:47,794 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 22:06:47,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2024-10-13 22:06:47,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120949773] [2024-10-13 22:06:47,794 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 22:06:47,795 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-13 22:06:47,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 22:06:47,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-13 22:06:47,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-10-13 22:06:47,797 INFO L87 Difference]: Start difference. First operand 12 states and 13 transitions. Second operand has 11 states, 11 states have (on average 2.0) internal successors, (22), 11 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) [2024-10-13 22:06:47,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 22:06:47,840 INFO L93 Difference]: Finished difference Result 29 states and 31 transitions. [2024-10-13 22:06:47,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-13 22:06:47,841 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.0) internal successors, (22), 11 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 11 [2024-10-13 22:06:47,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 22:06:47,841 INFO L225 Difference]: With dead ends: 29 [2024-10-13 22:06:47,841 INFO L226 Difference]: Without dead ends: 19 [2024-10-13 22:06:47,842 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 15 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2024-10-13 22:06:47,843 INFO L432 NwaCegarLoop]: 5 mSDtfsCounter, 8 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-13 22:06:47,843 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 24 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-13 22:06:47,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2024-10-13 22:06:47,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 13. [2024-10-13 22:06:47,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 12 states have internal predecessors, (14), 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) [2024-10-13 22:06:47,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2024-10-13 22:06:47,845 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 11 [2024-10-13 22:06:47,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 22:06:47,846 INFO L471 AbstractCegarLoop]: Abstraction has 13 states and 14 transitions. [2024-10-13 22:06:47,846 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.0) internal successors, (22), 11 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) [2024-10-13 22:06:47,846 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 14 transitions. [2024-10-13 22:06:47,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-10-13 22:06:47,846 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 22:06:47,846 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 22:06:47,859 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-10-13 22:06:48,046 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,SelfDestructingSolverStorable3 [2024-10-13 22:06:48,047 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 22:06:48,048 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 22:06:48,048 INFO L85 PathProgramCache]: Analyzing trace with hash -1774280230, now seen corresponding path program 2 times [2024-10-13 22:06:48,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 22:06:48,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993797989] [2024-10-13 22:06:48,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 22:06:48,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 22:06:48,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 22:06:48,219 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 22:06:48,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 22:06:48,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993797989] [2024-10-13 22:06:48,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [993797989] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 22:06:48,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1360463511] [2024-10-13 22:06:48,220 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-13 22:06:48,220 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 22:06:48,220 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 22:06:48,221 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) [2024-10-13 22:06:48,222 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-13 22:06:48,259 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-13 22:06:48,259 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 22:06:48,260 INFO L255 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-10-13 22:06:48,261 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 22:06:48,286 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-10-13 22:06:48,365 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 22:06:48,365 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 22:06:48,419 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2024-10-13 22:06:48,422 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2024-10-13 22:06:48,427 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 22:06:48,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1360463511] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 22:06:48,428 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 22:06:48,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 16 [2024-10-13 22:06:48,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125941324] [2024-10-13 22:06:48,428 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 22:06:48,428 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-10-13 22:06:48,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 22:06:48,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-10-13 22:06:48,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2024-10-13 22:06:48,429 INFO L87 Difference]: Start difference. First operand 13 states and 14 transitions. Second operand has 16 states, 16 states have (on average 1.6875) internal successors, (27), 16 states have internal predecessors, (27), 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) [2024-10-13 22:06:48,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 22:06:48,506 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2024-10-13 22:06:48,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-13 22:06:48,507 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.6875) internal successors, (27), 16 states have internal predecessors, (27), 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 12 [2024-10-13 22:06:48,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 22:06:48,507 INFO L225 Difference]: With dead ends: 19 [2024-10-13 22:06:48,507 INFO L226 Difference]: Without dead ends: 17 [2024-10-13 22:06:48,507 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=218, Unknown=0, NotChecked=0, Total=272 [2024-10-13 22:06:48,508 INFO L432 NwaCegarLoop]: 6 mSDtfsCounter, 16 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-13 22:06:48,508 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 38 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-13 22:06:48,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2024-10-13 22:06:48,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 16. [2024-10-13 22:06:48,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 15 states have internal predecessors, (17), 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) [2024-10-13 22:06:48,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2024-10-13 22:06:48,511 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 12 [2024-10-13 22:06:48,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 22:06:48,511 INFO L471 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2024-10-13 22:06:48,511 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.6875) internal successors, (27), 16 states have internal predecessors, (27), 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) [2024-10-13 22:06:48,511 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2024-10-13 22:06:48,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-10-13 22:06:48,512 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 22:06:48,512 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-10-13 22:06:48,526 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-10-13 22:06:48,715 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 22:06:48,716 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 22:06:48,716 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 22:06:48,717 INFO L85 PathProgramCache]: Analyzing trace with hash 584973411, now seen corresponding path program 3 times [2024-10-13 22:06:48,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 22:06:48,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345768047] [2024-10-13 22:06:48,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 22:06:48,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 22:06:48,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 22:06:48,801 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 22:06:48,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 22:06:48,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1345768047] [2024-10-13 22:06:48,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1345768047] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 22:06:48,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1424859696] [2024-10-13 22:06:48,802 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-13 22:06:48,802 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 22:06:48,802 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 22:06:48,804 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) [2024-10-13 22:06:48,805 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-13 22:06:48,843 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-10-13 22:06:48,844 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 22:06:48,844 INFO L255 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-13 22:06:48,845 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 22:06:48,908 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 22:06:48,909 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 22:06:48,969 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 22:06:48,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1424859696] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 22:06:48,970 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 22:06:48,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2024-10-13 22:06:48,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808772769] [2024-10-13 22:06:48,970 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 22:06:48,971 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-13 22:06:48,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 22:06:48,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-13 22:06:48,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2024-10-13 22:06:48,971 INFO L87 Difference]: Start difference. First operand 16 states and 17 transitions. Second operand has 14 states, 14 states have (on average 2.0714285714285716) internal successors, (29), 14 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) [2024-10-13 22:06:49,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 22:06:49,030 INFO L93 Difference]: Finished difference Result 36 states and 38 transitions. [2024-10-13 22:06:49,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-13 22:06:49,031 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.0714285714285716) internal successors, (29), 14 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 15 [2024-10-13 22:06:49,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 22:06:49,032 INFO L225 Difference]: With dead ends: 36 [2024-10-13 22:06:49,032 INFO L226 Difference]: Without dead ends: 23 [2024-10-13 22:06:49,032 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 20 SyntacticMatches, 5 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2024-10-13 22:06:49,033 INFO L432 NwaCegarLoop]: 6 mSDtfsCounter, 14 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-13 22:06:49,033 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 28 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-13 22:06:49,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2024-10-13 22:06:49,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 17. [2024-10-13 22:06:49,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.125) internal successors, (18), 16 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) [2024-10-13 22:06:49,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2024-10-13 22:06:49,037 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 15 [2024-10-13 22:06:49,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 22:06:49,037 INFO L471 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2024-10-13 22:06:49,037 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.0714285714285716) internal successors, (29), 14 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) [2024-10-13 22:06:49,037 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2024-10-13 22:06:49,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-10-13 22:06:49,039 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 22:06:49,039 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1] [2024-10-13 22:06:49,052 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-13 22:06:49,239 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 22:06:49,239 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 22:06:49,240 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 22:06:49,240 INFO L85 PathProgramCache]: Analyzing trace with hash -978470083, now seen corresponding path program 4 times [2024-10-13 22:06:49,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 22:06:49,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957840545] [2024-10-13 22:06:49,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 22:06:49,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 22:06:49,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 22:06:49,414 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 22:06:49,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 22:06:49,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957840545] [2024-10-13 22:06:49,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [957840545] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 22:06:49,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [314767285] [2024-10-13 22:06:49,415 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-13 22:06:49,415 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 22:06:49,415 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 22:06:49,417 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) [2024-10-13 22:06:49,418 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-13 22:06:49,461 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-13 22:06:49,461 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 22:06:49,462 INFO L255 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-10-13 22:06:49,464 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 22:06:49,474 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-10-13 22:06:49,563 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 22:06:49,564 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 22:06:49,637 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2024-10-13 22:06:49,640 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2024-10-13 22:06:49,646 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 22:06:49,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [314767285] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 22:06:49,647 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 22:06:49,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 11] total 16 [2024-10-13 22:06:49,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748244694] [2024-10-13 22:06:49,647 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 22:06:49,647 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-10-13 22:06:49,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 22:06:49,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-10-13 22:06:49,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2024-10-13 22:06:49,648 INFO L87 Difference]: Start difference. First operand 17 states and 18 transitions. Second operand has 16 states, 16 states have (on average 1.75) internal successors, (28), 16 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) [2024-10-13 22:06:49,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 22:06:49,745 INFO L93 Difference]: Finished difference Result 23 states and 24 transitions. [2024-10-13 22:06:49,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-13 22:06:49,746 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.75) internal successors, (28), 16 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 16 [2024-10-13 22:06:49,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 22:06:49,746 INFO L225 Difference]: With dead ends: 23 [2024-10-13 22:06:49,746 INFO L226 Difference]: Without dead ends: 21 [2024-10-13 22:06:49,746 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=223, Unknown=0, NotChecked=0, Total=272 [2024-10-13 22:06:49,747 INFO L432 NwaCegarLoop]: 6 mSDtfsCounter, 8 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 154 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-13 22:06:49,747 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 39 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 154 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-13 22:06:49,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2024-10-13 22:06:49,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 20. [2024-10-13 22:06:49,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.105263157894737) internal successors, (21), 19 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) [2024-10-13 22:06:49,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2024-10-13 22:06:49,755 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 16 [2024-10-13 22:06:49,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 22:06:49,755 INFO L471 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2024-10-13 22:06:49,755 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.75) internal successors, (28), 16 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) [2024-10-13 22:06:49,755 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2024-10-13 22:06:49,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-10-13 22:06:49,756 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 22:06:49,756 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1, 1] [2024-10-13 22:06:49,769 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-13 22:06:49,960 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 22:06:49,961 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 22:06:49,961 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 22:06:49,961 INFO L85 PathProgramCache]: Analyzing trace with hash 345588768, now seen corresponding path program 5 times [2024-10-13 22:06:49,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 22:06:49,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79778600] [2024-10-13 22:06:49,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 22:06:49,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 22:06:49,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 22:06:50,069 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 8 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 22:06:50,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 22:06:50,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79778600] [2024-10-13 22:06:50,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [79778600] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 22:06:50,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1864703704] [2024-10-13 22:06:50,069 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-13 22:06:50,069 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 22:06:50,070 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 22:06:50,071 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) [2024-10-13 22:06:50,072 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-13 22:06:50,124 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-10-13 22:06:50,125 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 22:06:50,126 INFO L255 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-13 22:06:50,126 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 22:06:50,200 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 15 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 22:06:50,200 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 22:06:50,251 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 15 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 22:06:50,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1864703704] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 22:06:50,252 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 22:06:50,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 17 [2024-10-13 22:06:50,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282618974] [2024-10-13 22:06:50,252 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 22:06:50,252 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-10-13 22:06:50,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 22:06:50,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-10-13 22:06:50,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2024-10-13 22:06:50,253 INFO L87 Difference]: Start difference. First operand 20 states and 21 transitions. Second operand has 17 states, 17 states have (on average 2.1176470588235294) internal successors, (36), 17 states have internal predecessors, (36), 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) [2024-10-13 22:06:50,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 22:06:50,306 INFO L93 Difference]: Finished difference Result 43 states and 45 transitions. [2024-10-13 22:06:50,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-13 22:06:50,306 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.1176470588235294) internal successors, (36), 17 states have internal predecessors, (36), 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 19 [2024-10-13 22:06:50,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 22:06:50,307 INFO L225 Difference]: With dead ends: 43 [2024-10-13 22:06:50,307 INFO L226 Difference]: Without dead ends: 27 [2024-10-13 22:06:50,307 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 25 SyntacticMatches, 7 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=108, Invalid=272, Unknown=0, NotChecked=0, Total=380 [2024-10-13 22:06:50,307 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 22 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-13 22:06:50,308 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 34 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-13 22:06:50,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2024-10-13 22:06:50,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 21. [2024-10-13 22:06:50,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 20 states have (on average 1.1) internal successors, (22), 20 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) [2024-10-13 22:06:50,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2024-10-13 22:06:50,311 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 19 [2024-10-13 22:06:50,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 22:06:50,311 INFO L471 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2024-10-13 22:06:50,311 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.1176470588235294) internal successors, (36), 17 states have internal predecessors, (36), 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) [2024-10-13 22:06:50,311 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2024-10-13 22:06:50,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-10-13 22:06:50,312 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 22:06:50,312 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 1, 1, 1, 1, 1, 1] [2024-10-13 22:06:50,324 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-10-13 22:06:50,515 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 22:06:50,516 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 22:06:50,516 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 22:06:50,516 INFO L85 PathProgramCache]: Analyzing trace with hash 962201082, now seen corresponding path program 6 times [2024-10-13 22:06:50,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 22:06:50,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156296893] [2024-10-13 22:06:50,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 22:06:50,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 22:06:50,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 22:06:50,709 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 22:06:50,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 22:06:50,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156296893] [2024-10-13 22:06:50,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1156296893] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 22:06:50,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1945079855] [2024-10-13 22:06:50,710 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-10-13 22:06:50,710 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 22:06:50,710 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 22:06:50,711 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) [2024-10-13 22:06:50,712 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-13 22:06:50,756 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2024-10-13 22:06:50,756 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 22:06:50,757 INFO L255 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-10-13 22:06:50,758 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 22:06:50,765 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-10-13 22:06:50,840 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 22:06:50,841 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 22:06:50,877 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2024-10-13 22:06:50,879 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2024-10-13 22:06:50,884 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 22:06:50,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1945079855] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 22:06:50,884 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 22:06:50,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 17 [2024-10-13 22:06:50,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778090176] [2024-10-13 22:06:50,884 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 22:06:50,885 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-10-13 22:06:50,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 22:06:50,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-10-13 22:06:50,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=232, Unknown=0, NotChecked=0, Total=272 [2024-10-13 22:06:50,886 INFO L87 Difference]: Start difference. First operand 21 states and 22 transitions. Second operand has 17 states, 17 states have (on average 1.9411764705882353) internal successors, (33), 17 states have internal predecessors, (33), 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) [2024-10-13 22:06:50,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 22:06:50,984 INFO L93 Difference]: Finished difference Result 27 states and 28 transitions. [2024-10-13 22:06:50,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-13 22:06:50,985 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.9411764705882353) internal successors, (33), 17 states have internal predecessors, (33), 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 20 [2024-10-13 22:06:50,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 22:06:50,985 INFO L225 Difference]: With dead ends: 27 [2024-10-13 22:06:50,985 INFO L226 Difference]: Without dead ends: 25 [2024-10-13 22:06:50,986 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2024-10-13 22:06:50,986 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 12 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 222 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 222 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-13 22:06:50,986 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 73 Invalid, 223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 222 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-13 22:06:50,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2024-10-13 22:06:50,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 24. [2024-10-13 22:06:50,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 23 states have (on average 1.0869565217391304) internal successors, (25), 23 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) [2024-10-13 22:06:50,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions. [2024-10-13 22:06:50,990 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 20 [2024-10-13 22:06:50,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 22:06:50,991 INFO L471 AbstractCegarLoop]: Abstraction has 24 states and 25 transitions. [2024-10-13 22:06:50,991 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 1.9411764705882353) internal successors, (33), 17 states have internal predecessors, (33), 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) [2024-10-13 22:06:50,991 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions. [2024-10-13 22:06:50,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-10-13 22:06:50,991 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 22:06:50,991 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 1, 1, 1, 1, 1, 1] [2024-10-13 22:06:51,003 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-10-13 22:06:51,192 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 22:06:51,192 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 22:06:51,192 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 22:06:51,192 INFO L85 PathProgramCache]: Analyzing trace with hash 325493827, now seen corresponding path program 7 times [2024-10-13 22:06:51,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 22:06:51,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964321424] [2024-10-13 22:06:51,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 22:06:51,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 22:06:51,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 22:06:51,306 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 16 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 22:06:51,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 22:06:51,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964321424] [2024-10-13 22:06:51,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1964321424] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 22:06:51,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1606988464] [2024-10-13 22:06:51,306 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-10-13 22:06:51,306 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 22:06:51,306 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 22:06:51,307 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) [2024-10-13 22:06:51,309 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-13 22:06:51,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 22:06:51,362 INFO L255 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-13 22:06:51,363 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 22:06:51,449 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 26 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 22:06:51,449 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 22:06:51,513 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 26 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 22:06:51,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1606988464] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 22:06:51,514 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 22:06:51,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 20 [2024-10-13 22:06:51,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456104825] [2024-10-13 22:06:51,514 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 22:06:51,514 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-10-13 22:06:51,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 22:06:51,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-10-13 22:06:51,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=279, Unknown=0, NotChecked=0, Total=380 [2024-10-13 22:06:51,515 INFO L87 Difference]: Start difference. First operand 24 states and 25 transitions. Second operand has 20 states, 20 states have (on average 2.15) internal successors, (43), 20 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) [2024-10-13 22:06:51,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 22:06:51,584 INFO L93 Difference]: Finished difference Result 50 states and 52 transitions. [2024-10-13 22:06:51,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-10-13 22:06:51,584 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.15) internal successors, (43), 20 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) Word has length 23 [2024-10-13 22:06:51,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 22:06:51,584 INFO L225 Difference]: With dead ends: 50 [2024-10-13 22:06:51,585 INFO L226 Difference]: Without dead ends: 31 [2024-10-13 22:06:51,585 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 30 SyntacticMatches, 9 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 237 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=151, Invalid=401, Unknown=0, NotChecked=0, Total=552 [2024-10-13 22:06:51,585 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 24 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-13 22:06:51,586 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 41 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-13 22:06:51,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2024-10-13 22:06:51,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 25. [2024-10-13 22:06:51,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 24 states have (on average 1.0833333333333333) internal successors, (26), 24 states have internal predecessors, (26), 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) [2024-10-13 22:06:51,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 26 transitions. [2024-10-13 22:06:51,590 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 26 transitions. Word has length 23 [2024-10-13 22:06:51,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 22:06:51,591 INFO L471 AbstractCegarLoop]: Abstraction has 25 states and 26 transitions. [2024-10-13 22:06:51,591 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.15) internal successors, (43), 20 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) [2024-10-13 22:06:51,591 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 26 transitions. [2024-10-13 22:06:51,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-10-13 22:06:51,591 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 22:06:51,591 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 1, 1, 1, 1, 1, 1] [2024-10-13 22:06:51,607 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-10-13 22:06:51,791 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,SelfDestructingSolverStorable9 [2024-10-13 22:06:51,792 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 22:06:51,793 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 22:06:51,793 INFO L85 PathProgramCache]: Analyzing trace with hash -2082543331, now seen corresponding path program 8 times [2024-10-13 22:06:51,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 22:06:51,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981087835] [2024-10-13 22:06:51,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 22:06:51,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 22:06:51,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 22:06:52,091 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 22:06:52,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 22:06:52,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981087835] [2024-10-13 22:06:52,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1981087835] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 22:06:52,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1576636223] [2024-10-13 22:06:52,092 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-13 22:06:52,092 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 22:06:52,092 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 22:06:52,093 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) [2024-10-13 22:06:52,094 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-13 22:06:52,151 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-13 22:06:52,151 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 22:06:52,152 INFO L255 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-10-13 22:06:52,153 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 22:06:52,170 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-10-13 22:06:52,300 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 22:06:52,300 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 22:06:52,423 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2024-10-13 22:06:52,425 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2024-10-13 22:06:52,507 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 22:06:52,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1576636223] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 22:06:52,508 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 22:06:52,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 30 [2024-10-13 22:06:52,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849996047] [2024-10-13 22:06:52,508 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 22:06:52,508 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-10-13 22:06:52,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 22:06:52,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-10-13 22:06:52,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=783, Unknown=0, NotChecked=0, Total=870 [2024-10-13 22:06:52,510 INFO L87 Difference]: Start difference. First operand 25 states and 26 transitions. Second operand has 30 states, 30 states have (on average 1.9) internal successors, (57), 30 states have internal predecessors, (57), 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) [2024-10-13 22:06:52,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 22:06:52,693 INFO L93 Difference]: Finished difference Result 31 states and 32 transitions. [2024-10-13 22:06:52,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-13 22:06:52,694 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 1.9) internal successors, (57), 30 states have internal predecessors, (57), 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 24 [2024-10-13 22:06:52,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 22:06:52,694 INFO L225 Difference]: With dead ends: 31 [2024-10-13 22:06:52,694 INFO L226 Difference]: Without dead ends: 29 [2024-10-13 22:06:52,695 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=96, Invalid=834, Unknown=0, NotChecked=0, Total=930 [2024-10-13 22:06:52,695 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 8 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 399 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 400 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 399 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-13 22:06:52,695 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 134 Invalid, 400 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 399 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-13 22:06:52,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2024-10-13 22:06:52,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 28. [2024-10-13 22:06:52,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 27 states have (on average 1.0740740740740742) internal successors, (29), 27 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) [2024-10-13 22:06:52,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 29 transitions. [2024-10-13 22:06:52,698 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 29 transitions. Word has length 24 [2024-10-13 22:06:52,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 22:06:52,699 INFO L471 AbstractCegarLoop]: Abstraction has 28 states and 29 transitions. [2024-10-13 22:06:52,699 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 1.9) internal successors, (57), 30 states have internal predecessors, (57), 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) [2024-10-13 22:06:52,699 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 29 transitions. [2024-10-13 22:06:52,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-10-13 22:06:52,699 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 22:06:52,699 INFO L215 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 1, 1, 1, 1, 1, 1] [2024-10-13 22:06:52,711 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-10-13 22:06:52,903 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 22:06:52,904 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 22:06:52,904 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 22:06:52,904 INFO L85 PathProgramCache]: Analyzing trace with hash -240989632, now seen corresponding path program 9 times [2024-10-13 22:06:52,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 22:06:52,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099276820] [2024-10-13 22:06:52,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 22:06:52,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 22:06:52,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 22:06:53,024 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 27 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 22:06:53,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 22:06:53,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099276820] [2024-10-13 22:06:53,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2099276820] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 22:06:53,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [740342064] [2024-10-13 22:06:53,025 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-13 22:06:53,025 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 22:06:53,025 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 22:06:53,026 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) [2024-10-13 22:06:53,027 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-10-13 22:06:53,108 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-10-13 22:06:53,108 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 22:06:53,109 INFO L255 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-10-13 22:06:53,109 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 22:06:53,220 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 40 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 22:06:53,220 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 22:06:53,300 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 40 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 22:06:53,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [740342064] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 22:06:53,301 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 22:06:53,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 23 [2024-10-13 22:06:53,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68662449] [2024-10-13 22:06:53,301 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 22:06:53,301 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-10-13 22:06:53,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 22:06:53,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-10-13 22:06:53,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=375, Unknown=0, NotChecked=0, Total=506 [2024-10-13 22:06:53,302 INFO L87 Difference]: Start difference. First operand 28 states and 29 transitions. Second operand has 23 states, 23 states have (on average 2.1739130434782608) internal successors, (50), 23 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) [2024-10-13 22:06:53,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 22:06:53,387 INFO L93 Difference]: Finished difference Result 57 states and 59 transitions. [2024-10-13 22:06:53,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-13 22:06:53,388 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.1739130434782608) internal successors, (50), 23 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) Word has length 27 [2024-10-13 22:06:53,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 22:06:53,388 INFO L225 Difference]: With dead ends: 57 [2024-10-13 22:06:53,388 INFO L226 Difference]: Without dead ends: 35 [2024-10-13 22:06:53,388 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 35 SyntacticMatches, 11 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 333 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=201, Invalid=555, Unknown=0, NotChecked=0, Total=756 [2024-10-13 22:06:53,389 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 40 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-13 22:06:53,389 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 49 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-13 22:06:53,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2024-10-13 22:06:53,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 29. [2024-10-13 22:06:53,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 28 states have (on average 1.0714285714285714) internal successors, (30), 28 states have internal predecessors, (30), 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) [2024-10-13 22:06:53,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 30 transitions. [2024-10-13 22:06:53,393 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 30 transitions. Word has length 27 [2024-10-13 22:06:53,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 22:06:53,393 INFO L471 AbstractCegarLoop]: Abstraction has 29 states and 30 transitions. [2024-10-13 22:06:53,393 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.1739130434782608) internal successors, (50), 23 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) [2024-10-13 22:06:53,393 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 30 transitions. [2024-10-13 22:06:53,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-10-13 22:06:53,393 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 22:06:53,393 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 1, 1, 1, 1, 1, 1] [2024-10-13 22:06:53,405 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-10-13 22:06:53,597 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-10-13 22:06:53,598 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 22:06:53,598 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 22:06:53,598 INFO L85 PathProgramCache]: Analyzing trace with hash 811143706, now seen corresponding path program 10 times [2024-10-13 22:06:53,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 22:06:53,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322058857] [2024-10-13 22:06:53,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 22:06:53,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 22:06:53,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 22:06:53,862 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 61 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 22:06:53,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 22:06:53,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1322058857] [2024-10-13 22:06:53,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1322058857] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 22:06:53,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [811383360] [2024-10-13 22:06:53,863 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-13 22:06:53,863 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 22:06:53,863 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 22:06:53,865 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) [2024-10-13 22:06:53,869 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-10-13 22:06:53,938 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-13 22:06:53,938 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 22:06:53,939 INFO L255 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-10-13 22:06:53,941 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 22:06:53,949 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-10-13 22:06:54,083 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 61 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 22:06:54,083 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 22:06:54,151 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2024-10-13 22:06:54,154 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2024-10-13 22:06:54,159 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 61 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 22:06:54,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [811383360] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 22:06:54,160 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 22:06:54,160 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 23 [2024-10-13 22:06:54,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477260729] [2024-10-13 22:06:54,160 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 22:06:54,160 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-10-13 22:06:54,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 22:06:54,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-10-13 22:06:54,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=450, Unknown=0, NotChecked=0, Total=506 [2024-10-13 22:06:54,161 INFO L87 Difference]: Start difference. First operand 29 states and 30 transitions. Second operand has 23 states, 23 states have (on average 2.0869565217391304) internal successors, (48), 23 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) [2024-10-13 22:06:54,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 22:06:54,330 INFO L93 Difference]: Finished difference Result 35 states and 36 transitions. [2024-10-13 22:06:54,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-10-13 22:06:54,332 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.0869565217391304) internal successors, (48), 23 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) Word has length 28 [2024-10-13 22:06:54,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 22:06:54,333 INFO L225 Difference]: With dead ends: 35 [2024-10-13 22:06:54,333 INFO L226 Difference]: Without dead ends: 33 [2024-10-13 22:06:54,333 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 48 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=489, Unknown=0, NotChecked=0, Total=552 [2024-10-13 22:06:54,333 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 12 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 396 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 397 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 396 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-13 22:06:54,334 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 127 Invalid, 397 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 396 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-13 22:06:54,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2024-10-13 22:06:54,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 32. [2024-10-13 22:06:54,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 31 states have (on average 1.064516129032258) internal successors, (33), 31 states have internal predecessors, (33), 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) [2024-10-13 22:06:54,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 33 transitions. [2024-10-13 22:06:54,339 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 33 transitions. Word has length 28 [2024-10-13 22:06:54,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 22:06:54,339 INFO L471 AbstractCegarLoop]: Abstraction has 32 states and 33 transitions. [2024-10-13 22:06:54,339 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.0869565217391304) internal successors, (48), 23 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) [2024-10-13 22:06:54,341 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 33 transitions. [2024-10-13 22:06:54,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-10-13 22:06:54,341 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 22:06:54,341 INFO L215 NwaCegarLoop]: trace histogram [7, 6, 6, 6, 1, 1, 1, 1, 1, 1] [2024-10-13 22:06:54,353 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-10-13 22:06:54,541 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-10-13 22:06:54,542 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 22:06:54,542 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 22:06:54,542 INFO L85 PathProgramCache]: Analyzing trace with hash 1300931619, now seen corresponding path program 11 times [2024-10-13 22:06:54,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 22:06:54,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686772333] [2024-10-13 22:06:54,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 22:06:54,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 22:06:54,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 22:06:54,726 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 41 proven. 37 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 22:06:54,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 22:06:54,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686772333] [2024-10-13 22:06:54,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [686772333] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 22:06:54,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1884272796] [2024-10-13 22:06:54,727 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-13 22:06:54,727 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 22:06:54,727 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 22:06:54,729 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 22:06:54,730 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-10-13 22:06:54,800 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2024-10-13 22:06:54,800 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 22:06:54,801 INFO L255 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-10-13 22:06:54,805 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 22:06:54,946 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 57 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 22:06:54,947 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 22:06:55,039 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 57 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 22:06:55,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1884272796] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 22:06:55,040 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 22:06:55,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 26 [2024-10-13 22:06:55,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084005076] [2024-10-13 22:06:55,040 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 22:06:55,040 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-10-13 22:06:55,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 22:06:55,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-10-13 22:06:55,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=485, Unknown=0, NotChecked=0, Total=650 [2024-10-13 22:06:55,041 INFO L87 Difference]: Start difference. First operand 32 states and 33 transitions. Second operand has 26 states, 26 states have (on average 2.1923076923076925) internal successors, (57), 26 states have internal predecessors, (57), 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) [2024-10-13 22:06:55,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 22:06:55,149 INFO L93 Difference]: Finished difference Result 64 states and 66 transitions. [2024-10-13 22:06:55,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-10-13 22:06:55,149 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.1923076923076925) internal successors, (57), 26 states have internal predecessors, (57), 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 31 [2024-10-13 22:06:55,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 22:06:55,149 INFO L225 Difference]: With dead ends: 64 [2024-10-13 22:06:55,149 INFO L226 Difference]: Without dead ends: 39 [2024-10-13 22:06:55,150 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 40 SyntacticMatches, 13 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 444 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=258, Invalid=734, Unknown=0, NotChecked=0, Total=992 [2024-10-13 22:06:55,150 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 46 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-13 22:06:55,150 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 72 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-13 22:06:55,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2024-10-13 22:06:55,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 33. [2024-10-13 22:06:55,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 32 states have (on average 1.0625) internal successors, (34), 32 states have internal predecessors, (34), 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) [2024-10-13 22:06:55,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 34 transitions. [2024-10-13 22:06:55,156 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 34 transitions. Word has length 31 [2024-10-13 22:06:55,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 22:06:55,156 INFO L471 AbstractCegarLoop]: Abstraction has 33 states and 34 transitions. [2024-10-13 22:06:55,156 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.1923076923076925) internal successors, (57), 26 states have internal predecessors, (57), 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) [2024-10-13 22:06:55,156 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 34 transitions. [2024-10-13 22:06:55,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-10-13 22:06:55,158 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 22:06:55,158 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 1, 1, 1, 1, 1, 1] [2024-10-13 22:06:55,173 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-10-13 22:06:55,359 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-10-13 22:06:55,359 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 22:06:55,359 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 22:06:55,359 INFO L85 PathProgramCache]: Analyzing trace with hash 902131453, now seen corresponding path program 12 times [2024-10-13 22:06:55,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 22:06:55,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662717439] [2024-10-13 22:06:55,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 22:06:55,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 22:06:55,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 22:06:55,669 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 85 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 22:06:55,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 22:06:55,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [662717439] [2024-10-13 22:06:55,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [662717439] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 22:06:55,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1714212015] [2024-10-13 22:06:55,669 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-10-13 22:06:55,669 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 22:06:55,670 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 22:06:55,670 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 22:06:55,671 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-10-13 22:06:55,745 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2024-10-13 22:06:55,746 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 22:06:55,747 INFO L255 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 45 conjuncts are in the unsatisfiable core [2024-10-13 22:06:55,748 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 22:06:55,872 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-10-13 22:06:56,155 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 85 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 22:06:56,155 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 22:06:56,440 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2024-10-13 22:06:56,442 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2024-10-13 22:06:56,608 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 85 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 22:06:56,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1714212015] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 22:06:56,608 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 22:06:56,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 19, 19] total 51 [2024-10-13 22:06:56,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791995464] [2024-10-13 22:06:56,609 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 22:06:56,609 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2024-10-13 22:06:56,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 22:06:56,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2024-10-13 22:06:56,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=265, Invalid=2285, Unknown=0, NotChecked=0, Total=2550 [2024-10-13 22:06:56,610 INFO L87 Difference]: Start difference. First operand 33 states and 34 transitions. Second operand has 51 states, 51 states have (on average 1.7843137254901962) internal successors, (91), 51 states have internal predecessors, (91), 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) [2024-10-13 22:06:57,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 22:06:57,813 INFO L93 Difference]: Finished difference Result 88 states and 98 transitions. [2024-10-13 22:06:57,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2024-10-13 22:06:57,813 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 1.7843137254901962) internal successors, (91), 51 states have internal predecessors, (91), 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 [2024-10-13 22:06:57,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 22:06:57,814 INFO L225 Difference]: With dead ends: 88 [2024-10-13 22:06:57,814 INFO L226 Difference]: Without dead ends: 86 [2024-10-13 22:06:57,815 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1501 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=841, Invalid=5639, Unknown=0, NotChecked=0, Total=6480 [2024-10-13 22:06:57,815 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 109 mSDsluCounter, 299 mSDsCounter, 0 mSdLazyCounter, 855 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 311 SdHoareTripleChecker+Invalid, 894 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 855 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-13 22:06:57,816 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 311 Invalid, 894 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 855 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-13 22:06:57,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2024-10-13 22:06:57,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 59. [2024-10-13 22:06:57,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 58 states have (on average 1.0517241379310345) internal successors, (61), 58 states have internal predecessors, (61), 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) [2024-10-13 22:06:57,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 61 transitions. [2024-10-13 22:06:57,823 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 61 transitions. Word has length 32 [2024-10-13 22:06:57,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 22:06:57,824 INFO L471 AbstractCegarLoop]: Abstraction has 59 states and 61 transitions. [2024-10-13 22:06:57,824 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 1.7843137254901962) internal successors, (91), 51 states have internal predecessors, (91), 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) [2024-10-13 22:06:57,824 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 61 transitions. [2024-10-13 22:06:57,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-10-13 22:06:57,824 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 22:06:57,824 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 7, 7, 1, 1, 1, 1, 1, 1] [2024-10-13 22:06:57,839 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-10-13 22:06:58,025 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-10-13 22:06:58,025 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 22:06:58,025 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 22:06:58,025 INFO L85 PathProgramCache]: Analyzing trace with hash -794966470, now seen corresponding path program 13 times [2024-10-13 22:06:58,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 22:06:58,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141035194] [2024-10-13 22:06:58,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 22:06:58,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 22:06:58,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 22:06:58,411 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 0 proven. 113 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 22:06:58,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 22:06:58,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141035194] [2024-10-13 22:06:58,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [141035194] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 22:06:58,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [912207139] [2024-10-13 22:06:58,412 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-10-13 22:06:58,412 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 22:06:58,412 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 22:06:58,413 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 22:06:58,415 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-10-13 22:06:58,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 22:06:58,479 INFO L255 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 41 conjuncts are in the unsatisfiable core [2024-10-13 22:06:58,481 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 22:06:58,636 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-10-13 22:06:58,906 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 0 proven. 113 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 22:06:58,906 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 22:06:58,972 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2024-10-13 22:06:58,973 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2024-10-13 22:06:58,980 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 0 proven. 113 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 22:06:58,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [912207139] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 22:06:58,980 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 22:06:58,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 39 [2024-10-13 22:06:58,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974769463] [2024-10-13 22:06:58,980 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 22:06:58,980 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2024-10-13 22:06:58,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 22:06:58,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2024-10-13 22:06:58,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=1370, Unknown=0, NotChecked=0, Total=1482 [2024-10-13 22:06:58,981 INFO L87 Difference]: Start difference. First operand 59 states and 61 transitions. Second operand has 39 states, 39 states have (on average 1.9230769230769231) internal successors, (75), 39 states have internal predecessors, (75), 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) [2024-10-13 22:06:59,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 22:06:59,225 INFO L93 Difference]: Finished difference Result 90 states and 92 transitions. [2024-10-13 22:06:59,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-10-13 22:06:59,226 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 1.9230769230769231) internal successors, (75), 39 states have internal predecessors, (75), 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 [2024-10-13 22:06:59,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 22:06:59,226 INFO L225 Difference]: With dead ends: 90 [2024-10-13 22:06:59,227 INFO L226 Difference]: Without dead ends: 88 [2024-10-13 22:06:59,227 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 52 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 215 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=120, Invalid=1440, Unknown=0, NotChecked=0, Total=1560 [2024-10-13 22:06:59,227 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 32 mSDsluCounter, 302 mSDsCounter, 0 mSdLazyCounter, 689 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 320 SdHoareTripleChecker+Invalid, 691 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 689 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-13 22:06:59,228 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 320 Invalid, 691 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 689 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-13 22:06:59,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2024-10-13 22:06:59,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 59. [2024-10-13 22:06:59,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 58 states have (on average 1.0517241379310345) internal successors, (61), 58 states have internal predecessors, (61), 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) [2024-10-13 22:06:59,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 61 transitions. [2024-10-13 22:06:59,244 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 61 transitions. Word has length 36 [2024-10-13 22:06:59,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 22:06:59,244 INFO L471 AbstractCegarLoop]: Abstraction has 59 states and 61 transitions. [2024-10-13 22:06:59,244 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 1.9230769230769231) internal successors, (75), 39 states have internal predecessors, (75), 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) [2024-10-13 22:06:59,244 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 61 transitions. [2024-10-13 22:06:59,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-10-13 22:06:59,245 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 22:06:59,245 INFO L215 NwaCegarLoop]: trace histogram [9, 8, 8, 8, 1, 1, 1, 1, 1, 1] [2024-10-13 22:06:59,257 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-10-13 22:06:59,445 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 22:06:59,445 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 22:06:59,446 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 22:06:59,446 INFO L85 PathProgramCache]: Analyzing trace with hash -391644157, now seen corresponding path program 14 times [2024-10-13 22:06:59,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 22:06:59,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462396179] [2024-10-13 22:06:59,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 22:06:59,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 22:06:59,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 22:06:59,652 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 78 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 22:06:59,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 22:06:59,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [462396179] [2024-10-13 22:06:59,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [462396179] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 22:06:59,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [189383220] [2024-10-13 22:06:59,652 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-13 22:06:59,652 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 22:06:59,653 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 22:06:59,654 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 22:06:59,655 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-10-13 22:06:59,721 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-13 22:06:59,721 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 22:06:59,722 INFO L255 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-10-13 22:06:59,723 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 22:06:59,916 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 100 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 22:06:59,916 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 22:07:00,071 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 100 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 22:07:00,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [189383220] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 22:07:00,072 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 22:07:00,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 32 [2024-10-13 22:07:00,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505759474] [2024-10-13 22:07:00,072 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 22:07:00,072 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-10-13 22:07:00,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 22:07:00,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-10-13 22:07:00,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=245, Invalid=747, Unknown=0, NotChecked=0, Total=992 [2024-10-13 22:07:00,074 INFO L87 Difference]: Start difference. First operand 59 states and 61 transitions. Second operand has 32 states, 32 states have (on average 2.21875) internal successors, (71), 32 states have internal predecessors, (71), 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) [2024-10-13 22:07:00,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 22:07:00,210 INFO L93 Difference]: Finished difference Result 120 states and 123 transitions. [2024-10-13 22:07:00,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-10-13 22:07:00,210 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 2.21875) internal successors, (71), 32 states have internal predecessors, (71), 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 [2024-10-13 22:07:00,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 22:07:00,211 INFO L225 Difference]: With dead ends: 120 [2024-10-13 22:07:00,211 INFO L226 Difference]: Without dead ends: 47 [2024-10-13 22:07:00,211 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 50 SyntacticMatches, 17 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 711 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=393, Invalid=1167, Unknown=0, NotChecked=0, Total=1560 [2024-10-13 22:07:00,211 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 80 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-13 22:07:00,212 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 62 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-13 22:07:00,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2024-10-13 22:07:00,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 41. [2024-10-13 22:07:00,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 40 states have (on average 1.05) internal successors, (42), 40 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) [2024-10-13 22:07:00,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 42 transitions. [2024-10-13 22:07:00,220 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 42 transitions. Word has length 39 [2024-10-13 22:07:00,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 22:07:00,220 INFO L471 AbstractCegarLoop]: Abstraction has 41 states and 42 transitions. [2024-10-13 22:07:00,220 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 2.21875) internal successors, (71), 32 states have internal predecessors, (71), 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) [2024-10-13 22:07:00,220 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 42 transitions. [2024-10-13 22:07:00,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-10-13 22:07:00,221 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 22:07:00,221 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 8, 8, 1, 1, 1, 1, 1, 1] [2024-10-13 22:07:00,233 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-10-13 22:07:00,421 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-10-13 22:07:00,421 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 22:07:00,421 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 22:07:00,422 INFO L85 PathProgramCache]: Analyzing trace with hash 952061149, now seen corresponding path program 15 times [2024-10-13 22:07:00,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 22:07:00,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247893664] [2024-10-13 22:07:00,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 22:07:00,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 22:07:00,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 22:07:00,971 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 22:07:00,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 22:07:00,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247893664] [2024-10-13 22:07:00,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1247893664] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 22:07:00,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [192628509] [2024-10-13 22:07:00,972 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-13 22:07:00,972 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 22:07:00,972 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 22:07:00,973 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 22:07:00,975 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-10-13 22:07:01,160 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2024-10-13 22:07:01,160 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 22:07:01,162 INFO L255 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 48 conjuncts are in the unsatisfiable core [2024-10-13 22:07:01,163 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 22:07:01,181 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-10-13 22:07:01,431 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 22:07:01,431 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 22:07:01,667 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2024-10-13 22:07:01,668 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2024-10-13 22:07:01,844 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 22:07:01,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [192628509] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 22:07:01,844 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 22:07:01,844 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 22] total 50 [2024-10-13 22:07:01,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406527844] [2024-10-13 22:07:01,845 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 22:07:01,845 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2024-10-13 22:07:01,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 22:07:01,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2024-10-13 22:07:01,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=2299, Unknown=0, NotChecked=0, Total=2450 [2024-10-13 22:07:01,846 INFO L87 Difference]: Start difference. First operand 41 states and 42 transitions. Second operand has 50 states, 50 states have (on average 2.02) internal successors, (101), 50 states have internal predecessors, (101), 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) [2024-10-13 22:07:02,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 22:07:02,173 INFO L93 Difference]: Finished difference Result 47 states and 48 transitions. [2024-10-13 22:07:02,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-10-13 22:07:02,174 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 2.02) internal successors, (101), 50 states have internal predecessors, (101), 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 40 [2024-10-13 22:07:02,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 22:07:02,174 INFO L225 Difference]: With dead ends: 47 [2024-10-13 22:07:02,174 INFO L226 Difference]: Without dead ends: 45 [2024-10-13 22:07:02,174 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 430 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=160, Invalid=2390, Unknown=0, NotChecked=0, Total=2550 [2024-10-13 22:07:02,175 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 10 mSDsluCounter, 319 mSDsCounter, 0 mSdLazyCounter, 1031 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 332 SdHoareTripleChecker+Invalid, 1032 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1031 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-13 22:07:02,175 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 332 Invalid, 1032 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1031 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-13 22:07:02,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2024-10-13 22:07:02,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 44. [2024-10-13 22:07:02,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 43 states have (on average 1.0465116279069768) internal successors, (45), 43 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) [2024-10-13 22:07:02,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 45 transitions. [2024-10-13 22:07:02,182 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 45 transitions. Word has length 40 [2024-10-13 22:07:02,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 22:07:02,182 INFO L471 AbstractCegarLoop]: Abstraction has 44 states and 45 transitions. [2024-10-13 22:07:02,183 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 2.02) internal successors, (101), 50 states have internal predecessors, (101), 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) [2024-10-13 22:07:02,183 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 45 transitions. [2024-10-13 22:07:02,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-10-13 22:07:02,183 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 22:07:02,183 INFO L215 NwaCegarLoop]: trace histogram [10, 9, 9, 9, 1, 1, 1, 1, 1, 1] [2024-10-13 22:07:02,199 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-10-13 22:07:02,383 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-10-13 22:07:02,384 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 22:07:02,384 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 22:07:02,384 INFO L85 PathProgramCache]: Analyzing trace with hash -1105539456, now seen corresponding path program 16 times [2024-10-13 22:07:02,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 22:07:02,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532131027] [2024-10-13 22:07:02,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 22:07:02,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 22:07:02,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 22:07:02,617 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 101 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 22:07:02,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 22:07:02,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532131027] [2024-10-13 22:07:02,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [532131027] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 22:07:02,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [893916395] [2024-10-13 22:07:02,618 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-13 22:07:02,618 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 22:07:02,618 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 22:07:02,620 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 22:07:02,621 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-10-13 22:07:02,736 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-13 22:07:02,736 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 22:07:02,738 INFO L255 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-10-13 22:07:02,738 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 22:07:02,954 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 126 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 22:07:02,954 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 22:07:03,094 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 126 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 22:07:03,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [893916395] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 22:07:03,094 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 22:07:03,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 35 [2024-10-13 22:07:03,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350090653] [2024-10-13 22:07:03,095 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 22:07:03,095 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-10-13 22:07:03,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 22:07:03,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-10-13 22:07:03,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=291, Invalid=899, Unknown=0, NotChecked=0, Total=1190 [2024-10-13 22:07:03,096 INFO L87 Difference]: Start difference. First operand 44 states and 45 transitions. Second operand has 35 states, 35 states have (on average 2.2285714285714286) internal successors, (78), 35 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) [2024-10-13 22:07:03,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 22:07:03,208 INFO L93 Difference]: Finished difference Result 85 states and 87 transitions. [2024-10-13 22:07:03,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-10-13 22:07:03,209 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 2.2285714285714286) internal successors, (78), 35 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 43 [2024-10-13 22:07:03,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 22:07:03,209 INFO L225 Difference]: With dead ends: 85 [2024-10-13 22:07:03,209 INFO L226 Difference]: Without dead ends: 51 [2024-10-13 22:07:03,210 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 55 SyntacticMatches, 19 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 867 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=471, Invalid=1421, Unknown=0, NotChecked=0, Total=1892 [2024-10-13 22:07:03,210 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 76 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-13 22:07:03,210 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 87 Invalid, 202 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-13 22:07:03,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2024-10-13 22:07:03,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 45. [2024-10-13 22:07:03,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 44 states have (on average 1.0454545454545454) internal successors, (46), 44 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) [2024-10-13 22:07:03,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 46 transitions. [2024-10-13 22:07:03,217 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 46 transitions. Word has length 43 [2024-10-13 22:07:03,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 22:07:03,217 INFO L471 AbstractCegarLoop]: Abstraction has 45 states and 46 transitions. [2024-10-13 22:07:03,217 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 2.2285714285714286) internal successors, (78), 35 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) [2024-10-13 22:07:03,217 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 46 transitions. [2024-10-13 22:07:03,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-10-13 22:07:03,218 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 22:07:03,218 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 9, 9, 1, 1, 1, 1, 1, 1] [2024-10-13 22:07:03,232 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2024-10-13 22:07:03,418 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 22:07:03,418 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 22:07:03,419 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 22:07:03,419 INFO L85 PathProgramCache]: Analyzing trace with hash -1643503014, now seen corresponding path program 17 times [2024-10-13 22:07:03,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 22:07:03,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619964219] [2024-10-13 22:07:03,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 22:07:03,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 22:07:03,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 22:07:03,830 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 0 proven. 181 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 22:07:03,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 22:07:03,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619964219] [2024-10-13 22:07:03,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1619964219] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 22:07:03,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1724243533] [2024-10-13 22:07:03,830 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-13 22:07:03,830 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 22:07:03,830 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 22:07:03,831 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 22:07:03,832 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-10-13 22:07:03,937 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2024-10-13 22:07:03,937 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 22:07:03,939 INFO L255 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 49 conjuncts are in the unsatisfiable core [2024-10-13 22:07:03,940 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 22:07:04,120 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-10-13 22:07:04,462 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 0 proven. 181 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 22:07:04,462 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 22:07:04,544 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2024-10-13 22:07:04,545 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2024-10-13 22:07:04,554 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 0 proven. 181 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 22:07:04,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1724243533] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 22:07:04,555 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 22:07:04,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 47 [2024-10-13 22:07:04,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35454707] [2024-10-13 22:07:04,555 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 22:07:04,555 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2024-10-13 22:07:04,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 22:07:04,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2024-10-13 22:07:04,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=2026, Unknown=0, NotChecked=0, Total=2162 [2024-10-13 22:07:04,556 INFO L87 Difference]: Start difference. First operand 45 states and 46 transitions. Second operand has 47 states, 47 states have (on average 1.9361702127659575) internal successors, (91), 47 states have internal predecessors, (91), 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) [2024-10-13 22:07:04,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 22:07:04,931 INFO L93 Difference]: Finished difference Result 51 states and 52 transitions. [2024-10-13 22:07:04,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-10-13 22:07:04,931 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 1.9361702127659575) internal successors, (91), 47 states have internal predecessors, (91), 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 44 [2024-10-13 22:07:04,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 22:07:04,931 INFO L225 Difference]: With dead ends: 51 [2024-10-13 22:07:04,931 INFO L226 Difference]: Without dead ends: 49 [2024-10-13 22:07:04,932 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 64 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 307 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=144, Invalid=2112, Unknown=0, NotChecked=0, Total=2256 [2024-10-13 22:07:04,932 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 16 mSDsluCounter, 377 mSDsCounter, 0 mSdLazyCounter, 1100 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 391 SdHoareTripleChecker+Invalid, 1102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-13 22:07:04,932 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 391 Invalid, 1102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1100 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-13 22:07:04,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2024-10-13 22:07:04,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 48. [2024-10-13 22:07:04,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 47 states have (on average 1.0425531914893618) internal successors, (49), 47 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) [2024-10-13 22:07:04,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 49 transitions. [2024-10-13 22:07:04,940 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 49 transitions. Word has length 44 [2024-10-13 22:07:04,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 22:07:04,940 INFO L471 AbstractCegarLoop]: Abstraction has 48 states and 49 transitions. [2024-10-13 22:07:04,941 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 1.9361702127659575) internal successors, (91), 47 states have internal predecessors, (91), 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) [2024-10-13 22:07:04,941 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 49 transitions. [2024-10-13 22:07:04,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-10-13 22:07:04,941 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 22:07:04,941 INFO L215 NwaCegarLoop]: trace histogram [11, 10, 10, 10, 1, 1, 1, 1, 1, 1] [2024-10-13 22:07:04,954 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2024-10-13 22:07:05,141 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 22:07:05,142 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 22:07:05,142 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 22:07:05,142 INFO L85 PathProgramCache]: Analyzing trace with hash 1033677795, now seen corresponding path program 18 times [2024-10-13 22:07:05,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 22:07:05,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447653814] [2024-10-13 22:07:05,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 22:07:05,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 22:07:05,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 22:07:05,456 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 127 proven. 83 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 22:07:05,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 22:07:05,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [447653814] [2024-10-13 22:07:05,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [447653814] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 22:07:05,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1654722081] [2024-10-13 22:07:05,457 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-10-13 22:07:05,457 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 22:07:05,457 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 22:07:05,458 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 22:07:05,460 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-10-13 22:07:05,726 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2024-10-13 22:07:05,726 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 22:07:05,728 INFO L255 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-10-13 22:07:05,729 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 22:07:05,933 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 155 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 22:07:05,933 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 22:07:06,093 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 155 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 22:07:06,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1654722081] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 22:07:06,093 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 22:07:06,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 38 [2024-10-13 22:07:06,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449146464] [2024-10-13 22:07:06,093 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 22:07:06,093 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-10-13 22:07:06,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 22:07:06,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-10-13 22:07:06,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=341, Invalid=1065, Unknown=0, NotChecked=0, Total=1406 [2024-10-13 22:07:06,094 INFO L87 Difference]: Start difference. First operand 48 states and 49 transitions. Second operand has 38 states, 38 states have (on average 2.236842105263158) internal successors, (85), 38 states have internal predecessors, (85), 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) [2024-10-13 22:07:06,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 22:07:06,245 INFO L93 Difference]: Finished difference Result 92 states and 94 transitions. [2024-10-13 22:07:06,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-10-13 22:07:06,246 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 2.236842105263158) internal successors, (85), 38 states have internal predecessors, (85), 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 47 [2024-10-13 22:07:06,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 22:07:06,246 INFO L225 Difference]: With dead ends: 92 [2024-10-13 22:07:06,246 INFO L226 Difference]: Without dead ends: 55 [2024-10-13 22:07:06,247 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 60 SyntacticMatches, 21 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1038 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=556, Invalid=1700, Unknown=0, NotChecked=0, Total=2256 [2024-10-13 22:07:06,248 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 90 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 184 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-13 22:07:06,248 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 91 Invalid, 229 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 184 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-13 22:07:06,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2024-10-13 22:07:06,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 49. [2024-10-13 22:07:06,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 48 states have (on average 1.0416666666666667) internal successors, (50), 48 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) [2024-10-13 22:07:06,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 50 transitions. [2024-10-13 22:07:06,256 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 50 transitions. Word has length 47 [2024-10-13 22:07:06,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 22:07:06,256 INFO L471 AbstractCegarLoop]: Abstraction has 49 states and 50 transitions. [2024-10-13 22:07:06,256 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 2.236842105263158) internal successors, (85), 38 states have internal predecessors, (85), 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) [2024-10-13 22:07:06,256 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 50 transitions. [2024-10-13 22:07:06,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-10-13 22:07:06,256 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 22:07:06,257 INFO L215 NwaCegarLoop]: trace histogram [11, 11, 10, 10, 1, 1, 1, 1, 1, 1] [2024-10-13 22:07:06,271 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-10-13 22:07:06,457 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 22:07:06,457 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 22:07:06,458 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 22:07:06,458 INFO L85 PathProgramCache]: Analyzing trace with hash 732594877, now seen corresponding path program 19 times [2024-10-13 22:07:06,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 22:07:06,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1604578984] [2024-10-13 22:07:06,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 22:07:06,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 22:07:06,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 22:07:06,894 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 0 proven. 221 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 22:07:06,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 22:07:06,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1604578984] [2024-10-13 22:07:06,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1604578984] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 22:07:06,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1744519004] [2024-10-13 22:07:06,895 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-10-13 22:07:06,895 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 22:07:06,895 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 22:07:06,896 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 22:07:06,898 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-10-13 22:07:06,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 22:07:06,976 INFO L255 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 53 conjuncts are in the unsatisfiable core [2024-10-13 22:07:06,977 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 22:07:07,190 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-10-13 22:07:07,651 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 0 proven. 221 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 22:07:07,651 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 22:07:07,751 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2024-10-13 22:07:07,753 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2024-10-13 22:07:07,764 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 0 proven. 221 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 22:07:07,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1744519004] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 22:07:07,764 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 22:07:07,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26, 26] total 51 [2024-10-13 22:07:07,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586875879] [2024-10-13 22:07:07,765 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 22:07:07,765 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2024-10-13 22:07:07,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 22:07:07,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2024-10-13 22:07:07,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=2402, Unknown=0, NotChecked=0, Total=2550 [2024-10-13 22:07:07,766 INFO L87 Difference]: Start difference. First operand 49 states and 50 transitions. Second operand has 51 states, 51 states have (on average 1.9411764705882353) internal successors, (99), 51 states have internal predecessors, (99), 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) [2024-10-13 22:07:08,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 22:07:08,179 INFO L93 Difference]: Finished difference Result 55 states and 56 transitions. [2024-10-13 22:07:08,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-10-13 22:07:08,179 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 1.9411764705882353) internal successors, (99), 51 states have internal predecessors, (99), 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 48 [2024-10-13 22:07:08,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 22:07:08,180 INFO L225 Difference]: With dead ends: 55 [2024-10-13 22:07:08,180 INFO L226 Difference]: Without dead ends: 53 [2024-10-13 22:07:08,181 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 70 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 359 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=156, Invalid=2496, Unknown=0, NotChecked=0, Total=2652 [2024-10-13 22:07:08,181 INFO L432 NwaCegarLoop]: 15 mSDtfsCounter, 10 mSDsluCounter, 425 mSDsCounter, 0 mSdLazyCounter, 1263 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 440 SdHoareTripleChecker+Invalid, 1264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1263 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-13 22:07:08,181 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 440 Invalid, 1264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1263 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-13 22:07:08,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2024-10-13 22:07:08,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 52. [2024-10-13 22:07:08,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 51 states have (on average 1.0392156862745099) internal successors, (53), 51 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) [2024-10-13 22:07:08,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 53 transitions. [2024-10-13 22:07:08,191 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 53 transitions. Word has length 48 [2024-10-13 22:07:08,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 22:07:08,191 INFO L471 AbstractCegarLoop]: Abstraction has 52 states and 53 transitions. [2024-10-13 22:07:08,191 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 1.9411764705882353) internal successors, (99), 51 states have internal predecessors, (99), 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) [2024-10-13 22:07:08,191 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 53 transitions. [2024-10-13 22:07:08,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-10-13 22:07:08,192 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 22:07:08,192 INFO L215 NwaCegarLoop]: trace histogram [12, 11, 11, 11, 1, 1, 1, 1, 1, 1] [2024-10-13 22:07:08,205 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2024-10-13 22:07:08,392 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-10-13 22:07:08,392 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 22:07:08,393 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 22:07:08,393 INFO L85 PathProgramCache]: Analyzing trace with hash 2009943200, now seen corresponding path program 20 times [2024-10-13 22:07:08,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 22:07:08,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389149984] [2024-10-13 22:07:08,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 22:07:08,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 22:07:08,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 22:07:08,686 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 156 proven. 97 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 22:07:08,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 22:07:08,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389149984] [2024-10-13 22:07:08,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [389149984] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 22:07:08,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [292237846] [2024-10-13 22:07:08,686 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-13 22:07:08,687 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 22:07:08,687 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 22:07:08,688 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 22:07:08,688 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-10-13 22:07:08,778 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-13 22:07:08,778 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 22:07:08,779 INFO L255 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-10-13 22:07:08,780 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 22:07:09,044 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 187 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 22:07:09,044 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 22:07:09,246 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 187 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 22:07:09,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [292237846] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 22:07:09,246 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 22:07:09,246 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27, 27] total 41 [2024-10-13 22:07:09,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861558644] [2024-10-13 22:07:09,247 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 22:07:09,247 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2024-10-13 22:07:09,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 22:07:09,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2024-10-13 22:07:09,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=395, Invalid=1245, Unknown=0, NotChecked=0, Total=1640 [2024-10-13 22:07:09,248 INFO L87 Difference]: Start difference. First operand 52 states and 53 transitions. Second operand has 41 states, 41 states have (on average 2.2439024390243905) internal successors, (92), 41 states have internal predecessors, (92), 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) [2024-10-13 22:07:09,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 22:07:09,388 INFO L93 Difference]: Finished difference Result 99 states and 101 transitions. [2024-10-13 22:07:09,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-10-13 22:07:09,388 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 2.2439024390243905) internal successors, (92), 41 states have internal predecessors, (92), 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 51 [2024-10-13 22:07:09,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 22:07:09,389 INFO L225 Difference]: With dead ends: 99 [2024-10-13 22:07:09,389 INFO L226 Difference]: Without dead ends: 59 [2024-10-13 22:07:09,390 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 65 SyntacticMatches, 23 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1224 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=648, Invalid=2004, Unknown=0, NotChecked=0, Total=2652 [2024-10-13 22:07:09,390 INFO L432 NwaCegarLoop]: 15 mSDtfsCounter, 78 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 191 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-13 22:07:09,390 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 94 Invalid, 230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 191 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-13 22:07:09,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2024-10-13 22:07:09,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 53. [2024-10-13 22:07:09,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 52 states have (on average 1.0384615384615385) internal successors, (54), 52 states have internal predecessors, (54), 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) [2024-10-13 22:07:09,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 54 transitions. [2024-10-13 22:07:09,397 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 54 transitions. Word has length 51 [2024-10-13 22:07:09,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 22:07:09,397 INFO L471 AbstractCegarLoop]: Abstraction has 53 states and 54 transitions. [2024-10-13 22:07:09,397 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 2.2439024390243905) internal successors, (92), 41 states have internal predecessors, (92), 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) [2024-10-13 22:07:09,397 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 54 transitions. [2024-10-13 22:07:09,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-10-13 22:07:09,398 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 22:07:09,398 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 11, 11, 1, 1, 1, 1, 1, 1] [2024-10-13 22:07:09,412 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2024-10-13 22:07:09,598 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-10-13 22:07:09,602 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 22:07:09,602 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 22:07:09,602 INFO L85 PathProgramCache]: Analyzing trace with hash 1795171962, now seen corresponding path program 21 times [2024-10-13 22:07:09,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 22:07:09,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1252263051] [2024-10-13 22:07:09,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 22:07:09,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 22:07:09,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 22:07:10,127 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 0 proven. 265 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 22:07:10,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 22:07:10,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1252263051] [2024-10-13 22:07:10,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1252263051] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 22:07:10,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2112244604] [2024-10-13 22:07:10,128 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-13 22:07:10,128 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 22:07:10,128 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 22:07:10,129 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 22:07:10,130 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-10-13 22:07:10,501 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2024-10-13 22:07:10,501 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 22:07:10,503 INFO L255 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 65 conjuncts are in the unsatisfiable core [2024-10-13 22:07:10,505 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 22:07:10,517 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-10-13 22:07:10,888 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 0 proven. 265 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 22:07:10,888 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 22:07:10,994 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2024-10-13 22:07:10,998 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2024-10-13 22:07:11,010 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 0 proven. 265 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 22:07:11,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2112244604] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 22:07:11,010 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 22:07:11,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 29, 29] total 43 [2024-10-13 22:07:11,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165959236] [2024-10-13 22:07:11,010 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 22:07:11,010 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2024-10-13 22:07:11,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 22:07:11,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2024-10-13 22:07:11,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=1692, Unknown=0, NotChecked=0, Total=1806 [2024-10-13 22:07:11,011 INFO L87 Difference]: Start difference. First operand 53 states and 54 transitions. Second operand has 43 states, 43 states have (on average 2.116279069767442) internal successors, (91), 43 states have internal predecessors, (91), 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) [2024-10-13 22:07:11,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 22:07:11,386 INFO L93 Difference]: Finished difference Result 59 states and 60 transitions. [2024-10-13 22:07:11,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-10-13 22:07:11,387 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 2.116279069767442) internal successors, (91), 43 states have internal predecessors, (91), 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 52 [2024-10-13 22:07:11,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 22:07:11,387 INFO L225 Difference]: With dead ends: 59 [2024-10-13 22:07:11,387 INFO L226 Difference]: Without dead ends: 57 [2024-10-13 22:07:11,388 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=121, Invalid=1771, Unknown=0, NotChecked=0, Total=1892 [2024-10-13 22:07:11,388 INFO L432 NwaCegarLoop]: 15 mSDtfsCounter, 12 mSDsluCounter, 355 mSDsCounter, 0 mSdLazyCounter, 1340 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 370 SdHoareTripleChecker+Invalid, 1341 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1340 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-13 22:07:11,388 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 370 Invalid, 1341 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1340 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-13 22:07:11,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2024-10-13 22:07:11,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 56. [2024-10-13 22:07:11,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 55 states have (on average 1.0363636363636364) internal successors, (57), 55 states have internal predecessors, (57), 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) [2024-10-13 22:07:11,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 57 transitions. [2024-10-13 22:07:11,396 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 57 transitions. Word has length 52 [2024-10-13 22:07:11,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 22:07:11,396 INFO L471 AbstractCegarLoop]: Abstraction has 56 states and 57 transitions. [2024-10-13 22:07:11,396 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 2.116279069767442) internal successors, (91), 43 states have internal predecessors, (91), 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) [2024-10-13 22:07:11,396 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 57 transitions. [2024-10-13 22:07:11,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-10-13 22:07:11,396 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 22:07:11,396 INFO L215 NwaCegarLoop]: trace histogram [13, 12, 12, 12, 1, 1, 1, 1, 1, 1] [2024-10-13 22:07:11,409 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2024-10-13 22:07:11,596 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 22:07:11,597 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 22:07:11,597 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 22:07:11,597 INFO L85 PathProgramCache]: Analyzing trace with hash -960056381, now seen corresponding path program 22 times [2024-10-13 22:07:11,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 22:07:11,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132410048] [2024-10-13 22:07:11,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 22:07:11,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 22:07:11,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 22:07:11,905 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 188 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 22:07:11,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 22:07:11,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1132410048] [2024-10-13 22:07:11,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1132410048] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 22:07:11,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [69214482] [2024-10-13 22:07:11,905 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-13 22:07:11,905 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 22:07:11,905 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 22:07:11,906 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 22:07:11,907 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-10-13 22:07:12,082 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-13 22:07:12,083 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 22:07:12,084 INFO L255 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-10-13 22:07:12,085 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 22:07:12,406 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 222 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 22:07:12,406 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 22:07:12,599 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 222 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 22:07:12,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [69214482] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 22:07:12,599 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 22:07:12,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29, 29] total 44 [2024-10-13 22:07:12,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91965741] [2024-10-13 22:07:12,600 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 22:07:12,600 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2024-10-13 22:07:12,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 22:07:12,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2024-10-13 22:07:12,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=453, Invalid=1439, Unknown=0, NotChecked=0, Total=1892 [2024-10-13 22:07:12,601 INFO L87 Difference]: Start difference. First operand 56 states and 57 transitions. Second operand has 44 states, 44 states have (on average 2.25) internal successors, (99), 44 states have internal predecessors, (99), 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) [2024-10-13 22:07:12,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 22:07:12,767 INFO L93 Difference]: Finished difference Result 106 states and 108 transitions. [2024-10-13 22:07:12,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-10-13 22:07:12,767 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 2.25) internal successors, (99), 44 states have internal predecessors, (99), 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 55 [2024-10-13 22:07:12,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 22:07:12,768 INFO L225 Difference]: With dead ends: 106 [2024-10-13 22:07:12,768 INFO L226 Difference]: Without dead ends: 63 [2024-10-13 22:07:12,769 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 70 SyntacticMatches, 25 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1425 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=747, Invalid=2333, Unknown=0, NotChecked=0, Total=3080 [2024-10-13 22:07:12,769 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 132 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 209 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-13 22:07:12,769 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [132 Valid, 104 Invalid, 275 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 209 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-13 22:07:12,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2024-10-13 22:07:12,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 57. [2024-10-13 22:07:12,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 56 states have (on average 1.0357142857142858) internal successors, (58), 56 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) [2024-10-13 22:07:12,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 58 transitions. [2024-10-13 22:07:12,777 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 58 transitions. Word has length 55 [2024-10-13 22:07:12,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 22:07:12,777 INFO L471 AbstractCegarLoop]: Abstraction has 57 states and 58 transitions. [2024-10-13 22:07:12,777 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 2.25) internal successors, (99), 44 states have internal predecessors, (99), 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) [2024-10-13 22:07:12,777 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 58 transitions. [2024-10-13 22:07:12,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-10-13 22:07:12,777 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 22:07:12,777 INFO L215 NwaCegarLoop]: trace histogram [13, 13, 12, 12, 1, 1, 1, 1, 1, 1] [2024-10-13 22:07:12,792 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2024-10-13 22:07:12,977 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 22:07:12,978 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 22:07:12,978 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 22:07:12,978 INFO L85 PathProgramCache]: Analyzing trace with hash -823848803, now seen corresponding path program 23 times [2024-10-13 22:07:12,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 22:07:12,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159784218] [2024-10-13 22:07:12,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 22:07:12,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 22:07:13,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 22:07:13,638 INFO L134 CoverageAnalysis]: Checked inductivity of 313 backedges. 0 proven. 313 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 22:07:13,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 22:07:13,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159784218] [2024-10-13 22:07:13,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [159784218] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 22:07:13,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [457281436] [2024-10-13 22:07:13,638 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-13 22:07:13,639 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 22:07:13,639 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 22:07:13,639 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 22:07:13,640 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-10-13 22:07:13,824 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2024-10-13 22:07:13,824 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 22:07:13,826 INFO L255 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 61 conjuncts are in the unsatisfiable core [2024-10-13 22:07:13,827 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 22:07:13,850 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-10-13 22:07:13,982 INFO L134 CoverageAnalysis]: Checked inductivity of 313 backedges. 0 proven. 313 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 22:07:13,982 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 22:07:14,279 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2024-10-13 22:07:14,280 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2024-10-13 22:07:14,536 INFO L134 CoverageAnalysis]: Checked inductivity of 313 backedges. 0 proven. 313 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 22:07:14,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [457281436] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 22:07:14,537 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 22:07:14,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30, 30] total 58 [2024-10-13 22:07:14,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410226225] [2024-10-13 22:07:14,537 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 22:07:14,537 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2024-10-13 22:07:14,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 22:07:14,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2024-10-13 22:07:14,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=167, Invalid=3139, Unknown=0, NotChecked=0, Total=3306 [2024-10-13 22:07:14,538 INFO L87 Difference]: Start difference. First operand 57 states and 58 transitions. Second operand has 58 states, 58 states have (on average 1.9137931034482758) internal successors, (111), 58 states have internal predecessors, (111), 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) [2024-10-13 22:07:14,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 22:07:14,981 INFO L93 Difference]: Finished difference Result 63 states and 64 transitions. [2024-10-13 22:07:14,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-10-13 22:07:14,982 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 58 states have (on average 1.9137931034482758) internal successors, (111), 58 states have internal predecessors, (111), 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 56 [2024-10-13 22:07:14,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 22:07:14,982 INFO L225 Difference]: With dead ends: 63 [2024-10-13 22:07:14,982 INFO L226 Difference]: Without dead ends: 61 [2024-10-13 22:07:14,982 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 83 SyntacticMatches, 1 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 768 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=175, Invalid=3247, Unknown=0, NotChecked=0, Total=3422 [2024-10-13 22:07:14,983 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 10 mSDsluCounter, 541 mSDsCounter, 0 mSdLazyCounter, 1625 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 558 SdHoareTripleChecker+Invalid, 1626 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1625 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-13 22:07:14,983 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 558 Invalid, 1626 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1625 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-13 22:07:14,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2024-10-13 22:07:14,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 60. [2024-10-13 22:07:14,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 59 states have (on average 1.0338983050847457) internal successors, (61), 59 states have internal predecessors, (61), 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) [2024-10-13 22:07:14,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 61 transitions. [2024-10-13 22:07:14,991 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 61 transitions. Word has length 56 [2024-10-13 22:07:14,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 22:07:14,992 INFO L471 AbstractCegarLoop]: Abstraction has 60 states and 61 transitions. [2024-10-13 22:07:14,992 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 58 states have (on average 1.9137931034482758) internal successors, (111), 58 states have internal predecessors, (111), 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) [2024-10-13 22:07:14,992 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 61 transitions. [2024-10-13 22:07:14,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-10-13 22:07:14,992 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 22:07:14,992 INFO L215 NwaCegarLoop]: trace histogram [14, 13, 13, 13, 1, 1, 1, 1, 1, 1] [2024-10-13 22:07:15,006 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2024-10-13 22:07:15,192 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-10-13 22:07:15,193 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 22:07:15,193 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 22:07:15,193 INFO L85 PathProgramCache]: Analyzing trace with hash -1831767360, now seen corresponding path program 24 times [2024-10-13 22:07:15,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 22:07:15,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580056374] [2024-10-13 22:07:15,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 22:07:15,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 22:07:15,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 22:07:15,571 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 223 proven. 128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 22:07:15,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 22:07:15,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580056374] [2024-10-13 22:07:15,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1580056374] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 22:07:15,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1996824806] [2024-10-13 22:07:15,571 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-10-13 22:07:15,571 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 22:07:15,571 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 22:07:15,572 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 22:07:15,573 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-10-13 22:07:15,842 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 14 check-sat command(s) [2024-10-13 22:07:15,842 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 22:07:15,844 INFO L255 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-10-13 22:07:15,845 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 22:07:16,162 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 260 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 22:07:16,162 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 22:07:16,415 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 260 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 22:07:16,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1996824806] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 22:07:16,415 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 22:07:16,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31, 31] total 47 [2024-10-13 22:07:16,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636199316] [2024-10-13 22:07:16,415 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 22:07:16,416 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2024-10-13 22:07:16,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 22:07:16,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2024-10-13 22:07:16,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=515, Invalid=1647, Unknown=0, NotChecked=0, Total=2162 [2024-10-13 22:07:16,416 INFO L87 Difference]: Start difference. First operand 60 states and 61 transitions. Second operand has 47 states, 47 states have (on average 2.25531914893617) internal successors, (106), 47 states have internal predecessors, (106), 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) [2024-10-13 22:07:16,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 22:07:16,579 INFO L93 Difference]: Finished difference Result 113 states and 115 transitions. [2024-10-13 22:07:16,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-10-13 22:07:16,579 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 2.25531914893617) internal successors, (106), 47 states have internal predecessors, (106), 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 59 [2024-10-13 22:07:16,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 22:07:16,580 INFO L225 Difference]: With dead ends: 113 [2024-10-13 22:07:16,580 INFO L226 Difference]: Without dead ends: 67 [2024-10-13 22:07:16,580 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 75 SyntacticMatches, 27 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1641 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=853, Invalid=2687, Unknown=0, NotChecked=0, Total=3540 [2024-10-13 22:07:16,581 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 194 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 221 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 194 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 318 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 221 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-13 22:07:16,581 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [194 Valid, 110 Invalid, 318 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 221 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-13 22:07:16,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2024-10-13 22:07:16,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 61. [2024-10-13 22:07:16,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 60 states have (on average 1.0333333333333334) internal successors, (62), 60 states have internal predecessors, (62), 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) [2024-10-13 22:07:16,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 62 transitions. [2024-10-13 22:07:16,589 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 62 transitions. Word has length 59 [2024-10-13 22:07:16,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 22:07:16,589 INFO L471 AbstractCegarLoop]: Abstraction has 61 states and 62 transitions. [2024-10-13 22:07:16,589 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 2.25531914893617) internal successors, (106), 47 states have internal predecessors, (106), 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) [2024-10-13 22:07:16,589 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 62 transitions. [2024-10-13 22:07:16,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-10-13 22:07:16,589 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 22:07:16,589 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 13, 13, 1, 1, 1, 1, 1, 1] [2024-10-13 22:07:16,603 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2024-10-13 22:07:16,790 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-10-13 22:07:16,790 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 22:07:16,790 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 22:07:16,790 INFO L85 PathProgramCache]: Analyzing trace with hash 2019676826, now seen corresponding path program 25 times [2024-10-13 22:07:16,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 22:07:16,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138181476] [2024-10-13 22:07:16,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 22:07:16,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 22:07:16,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 22:07:17,453 INFO L134 CoverageAnalysis]: Checked inductivity of 365 backedges. 0 proven. 365 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 22:07:17,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 22:07:17,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [138181476] [2024-10-13 22:07:17,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [138181476] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 22:07:17,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [158313533] [2024-10-13 22:07:17,453 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-10-13 22:07:17,453 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 22:07:17,454 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 22:07:17,454 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 22:07:17,455 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-10-13 22:07:17,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 22:07:17,557 INFO L255 TraceCheckSpWp]: Trace formula consists of 305 conjuncts, 65 conjuncts are in the unsatisfiable core [2024-10-13 22:07:17,558 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 22:07:17,882 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-10-13 22:07:18,452 INFO L134 CoverageAnalysis]: Checked inductivity of 365 backedges. 0 proven. 365 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 22:07:18,452 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 22:07:18,561 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2024-10-13 22:07:18,563 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2024-10-13 22:07:18,579 INFO L134 CoverageAnalysis]: Checked inductivity of 365 backedges. 0 proven. 365 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 22:07:18,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [158313533] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 22:07:18,580 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 22:07:18,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32, 32] total 63 [2024-10-13 22:07:18,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433728533] [2024-10-13 22:07:18,580 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 22:07:18,580 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2024-10-13 22:07:18,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 22:07:18,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2024-10-13 22:07:18,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=184, Invalid=3722, Unknown=0, NotChecked=0, Total=3906 [2024-10-13 22:07:18,581 INFO L87 Difference]: Start difference. First operand 61 states and 62 transitions. Second operand has 63 states, 63 states have (on average 1.9523809523809523) internal successors, (123), 63 states have internal predecessors, (123), 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) [2024-10-13 22:07:19,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 22:07:19,170 INFO L93 Difference]: Finished difference Result 67 states and 68 transitions. [2024-10-13 22:07:19,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-10-13 22:07:19,170 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 63 states have (on average 1.9523809523809523) internal successors, (123), 63 states have internal predecessors, (123), 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 60 [2024-10-13 22:07:19,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 22:07:19,170 INFO L225 Difference]: With dead ends: 67 [2024-10-13 22:07:19,170 INFO L226 Difference]: Without dead ends: 65 [2024-10-13 22:07:19,171 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 88 SyntacticMatches, 1 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 539 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=192, Invalid=3840, Unknown=0, NotChecked=0, Total=4032 [2024-10-13 22:07:19,171 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 10 mSDsluCounter, 759 mSDsCounter, 0 mSdLazyCounter, 2212 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 777 SdHoareTripleChecker+Invalid, 2213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-13 22:07:19,171 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 777 Invalid, 2213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2212 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-13 22:07:19,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2024-10-13 22:07:19,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 64. [2024-10-13 22:07:19,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 63 states have (on average 1.0317460317460319) internal successors, (65), 63 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) [2024-10-13 22:07:19,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 65 transitions. [2024-10-13 22:07:19,180 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 65 transitions. Word has length 60 [2024-10-13 22:07:19,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 22:07:19,180 INFO L471 AbstractCegarLoop]: Abstraction has 64 states and 65 transitions. [2024-10-13 22:07:19,180 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 63 states have (on average 1.9523809523809523) internal successors, (123), 63 states have internal predecessors, (123), 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) [2024-10-13 22:07:19,180 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 65 transitions. [2024-10-13 22:07:19,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-10-13 22:07:19,180 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 22:07:19,180 INFO L215 NwaCegarLoop]: trace histogram [15, 14, 14, 14, 1, 1, 1, 1, 1, 1] [2024-10-13 22:07:19,193 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2024-10-13 22:07:19,381 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-10-13 22:07:19,381 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 22:07:19,381 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 22:07:19,381 INFO L85 PathProgramCache]: Analyzing trace with hash 267171, now seen corresponding path program 26 times [2024-10-13 22:07:19,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 22:07:19,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308857196] [2024-10-13 22:07:19,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 22:07:19,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 22:07:19,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 22:07:19,806 INFO L134 CoverageAnalysis]: Checked inductivity of 406 backedges. 261 proven. 145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 22:07:19,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 22:07:19,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1308857196] [2024-10-13 22:07:19,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1308857196] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 22:07:19,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1687028433] [2024-10-13 22:07:19,806 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-13 22:07:19,806 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 22:07:19,806 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 22:07:19,808 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 22:07:19,809 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2024-10-13 22:07:19,930 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-13 22:07:19,930 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 22:07:19,935 INFO L255 TraceCheckSpWp]: Trace formula consists of 315 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-10-13 22:07:19,936 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 22:07:20,302 INFO L134 CoverageAnalysis]: Checked inductivity of 406 backedges. 301 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 22:07:20,302 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 22:07:20,584 INFO L134 CoverageAnalysis]: Checked inductivity of 406 backedges. 301 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 22:07:20,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1687028433] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 22:07:20,584 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 22:07:20,584 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33, 33] total 50 [2024-10-13 22:07:20,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756889393] [2024-10-13 22:07:20,585 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 22:07:20,585 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2024-10-13 22:07:20,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 22:07:20,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2024-10-13 22:07:20,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=581, Invalid=1869, Unknown=0, NotChecked=0, Total=2450 [2024-10-13 22:07:20,586 INFO L87 Difference]: Start difference. First operand 64 states and 65 transitions. Second operand has 50 states, 50 states have (on average 2.26) internal successors, (113), 50 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) [2024-10-13 22:07:20,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 22:07:20,753 INFO L93 Difference]: Finished difference Result 120 states and 122 transitions. [2024-10-13 22:07:20,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-10-13 22:07:20,753 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 2.26) internal successors, (113), 50 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 63 [2024-10-13 22:07:20,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 22:07:20,754 INFO L225 Difference]: With dead ends: 120 [2024-10-13 22:07:20,754 INFO L226 Difference]: Without dead ends: 71 [2024-10-13 22:07:20,754 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 80 SyntacticMatches, 29 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1872 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=966, Invalid=3066, Unknown=0, NotChecked=0, Total=4032 [2024-10-13 22:07:20,755 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 142 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 243 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 314 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-13 22:07:20,755 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 119 Invalid, 314 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 243 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-13 22:07:20,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2024-10-13 22:07:20,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 65. [2024-10-13 22:07:20,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 64 states have (on average 1.03125) internal successors, (66), 64 states have internal predecessors, (66), 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) [2024-10-13 22:07:20,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 66 transitions. [2024-10-13 22:07:20,763 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 66 transitions. Word has length 63 [2024-10-13 22:07:20,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 22:07:20,763 INFO L471 AbstractCegarLoop]: Abstraction has 65 states and 66 transitions. [2024-10-13 22:07:20,764 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 2.26) internal successors, (113), 50 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) [2024-10-13 22:07:20,764 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 66 transitions. [2024-10-13 22:07:20,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-10-13 22:07:20,764 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 22:07:20,764 INFO L215 NwaCegarLoop]: trace histogram [15, 15, 14, 14, 1, 1, 1, 1, 1, 1] [2024-10-13 22:07:20,777 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2024-10-13 22:07:20,968 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-10-13 22:07:20,969 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 22:07:20,969 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 22:07:20,969 INFO L85 PathProgramCache]: Analyzing trace with hash -464718211, now seen corresponding path program 27 times [2024-10-13 22:07:20,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 22:07:20,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1616824046] [2024-10-13 22:07:20,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 22:07:20,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 22:07:20,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 22:07:21,704 INFO L134 CoverageAnalysis]: Checked inductivity of 421 backedges. 0 proven. 421 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 22:07:21,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 22:07:21,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1616824046] [2024-10-13 22:07:21,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1616824046] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 22:07:21,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [175507548] [2024-10-13 22:07:21,705 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-13 22:07:21,705 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 22:07:21,705 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 22:07:21,707 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 22:07:21,709 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2024-10-13 22:07:22,489 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) [2024-10-13 22:07:22,489 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 22:07:22,492 INFO L255 TraceCheckSpWp]: Trace formula consists of 324 conjuncts, 67 conjuncts are in the unsatisfiable core [2024-10-13 22:07:22,493 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 22:07:22,507 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-10-13 22:07:22,952 INFO L134 CoverageAnalysis]: Checked inductivity of 421 backedges. 0 proven. 421 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 22:07:22,952 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 22:07:23,052 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2024-10-13 22:07:23,054 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2024-10-13 22:07:23,066 INFO L134 CoverageAnalysis]: Checked inductivity of 421 backedges. 0 proven. 421 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 22:07:23,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [175507548] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 22:07:23,066 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 22:07:23,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34, 34] total 50 [2024-10-13 22:07:23,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335369706] [2024-10-13 22:07:23,066 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 22:07:23,067 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2024-10-13 22:07:23,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 22:07:23,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2024-10-13 22:07:23,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=2322, Unknown=0, NotChecked=0, Total=2450 [2024-10-13 22:07:23,067 INFO L87 Difference]: Start difference. First operand 65 states and 66 transitions. Second operand has 50 states, 50 states have (on average 2.22) internal successors, (111), 50 states have internal predecessors, (111), 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) [2024-10-13 22:07:23,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 22:07:23,610 INFO L93 Difference]: Finished difference Result 71 states and 72 transitions. [2024-10-13 22:07:23,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-10-13 22:07:23,611 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 2.22) internal successors, (111), 50 states have internal predecessors, (111), 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 64 [2024-10-13 22:07:23,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 22:07:23,611 INFO L225 Difference]: With dead ends: 71 [2024-10-13 22:07:23,611 INFO L226 Difference]: Without dead ends: 69 [2024-10-13 22:07:23,611 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 111 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=135, Invalid=2415, Unknown=0, NotChecked=0, Total=2550 [2024-10-13 22:07:23,612 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 8 mSDsluCounter, 606 mSDsCounter, 0 mSdLazyCounter, 1922 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 625 SdHoareTripleChecker+Invalid, 1923 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1922 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-13 22:07:23,612 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 625 Invalid, 1923 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1922 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-13 22:07:23,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2024-10-13 22:07:23,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 68. [2024-10-13 22:07:23,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 67 states have (on average 1.0298507462686568) internal successors, (69), 67 states have internal predecessors, (69), 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) [2024-10-13 22:07:23,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 69 transitions. [2024-10-13 22:07:23,621 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 69 transitions. Word has length 64 [2024-10-13 22:07:23,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 22:07:23,621 INFO L471 AbstractCegarLoop]: Abstraction has 68 states and 69 transitions. [2024-10-13 22:07:23,622 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 2.22) internal successors, (111), 50 states have internal predecessors, (111), 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) [2024-10-13 22:07:23,622 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 69 transitions. [2024-10-13 22:07:23,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-10-13 22:07:23,622 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 22:07:23,622 INFO L215 NwaCegarLoop]: trace histogram [16, 15, 15, 15, 1, 1, 1, 1, 1, 1] [2024-10-13 22:07:23,640 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2024-10-13 22:07:23,822 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 22:07:23,823 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 22:07:23,823 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 22:07:23,823 INFO L85 PathProgramCache]: Analyzing trace with hash -1735835424, now seen corresponding path program 28 times [2024-10-13 22:07:23,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 22:07:23,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536925707] [2024-10-13 22:07:23,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 22:07:23,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 22:07:23,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 22:07:24,277 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 302 proven. 163 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 22:07:24,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 22:07:24,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536925707] [2024-10-13 22:07:24,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [536925707] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 22:07:24,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [836496650] [2024-10-13 22:07:24,277 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-13 22:07:24,277 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 22:07:24,277 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 22:07:24,278 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 22:07:24,279 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2024-10-13 22:07:24,655 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-13 22:07:24,655 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 22:07:24,657 INFO L255 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-10-13 22:07:24,659 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 22:07:25,038 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 345 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 22:07:25,038 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 22:07:25,316 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 345 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 22:07:25,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [836496650] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 22:07:25,316 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 22:07:25,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35, 35] total 53 [2024-10-13 22:07:25,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035629277] [2024-10-13 22:07:25,317 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 22:07:25,317 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2024-10-13 22:07:25,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 22:07:25,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2024-10-13 22:07:25,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=651, Invalid=2105, Unknown=0, NotChecked=0, Total=2756 [2024-10-13 22:07:25,318 INFO L87 Difference]: Start difference. First operand 68 states and 69 transitions. Second operand has 53 states, 53 states have (on average 2.2641509433962264) internal successors, (120), 53 states have internal predecessors, (120), 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) [2024-10-13 22:07:25,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 22:07:25,509 INFO L93 Difference]: Finished difference Result 127 states and 129 transitions. [2024-10-13 22:07:25,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2024-10-13 22:07:25,509 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 2.2641509433962264) internal successors, (120), 53 states have internal predecessors, (120), 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 67 [2024-10-13 22:07:25,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 22:07:25,510 INFO L225 Difference]: With dead ends: 127 [2024-10-13 22:07:25,510 INFO L226 Difference]: Without dead ends: 75 [2024-10-13 22:07:25,510 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 85 SyntacticMatches, 31 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2118 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1086, Invalid=3470, Unknown=0, NotChecked=0, Total=4556 [2024-10-13 22:07:25,510 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 110 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 267 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 322 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 267 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-13 22:07:25,511 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 132 Invalid, 322 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 267 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-13 22:07:25,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2024-10-13 22:07:25,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 69. [2024-10-13 22:07:25,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 68 states have (on average 1.0294117647058822) internal successors, (70), 68 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) [2024-10-13 22:07:25,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 70 transitions. [2024-10-13 22:07:25,521 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 70 transitions. Word has length 67 [2024-10-13 22:07:25,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 22:07:25,522 INFO L471 AbstractCegarLoop]: Abstraction has 69 states and 70 transitions. [2024-10-13 22:07:25,522 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 2.2641509433962264) internal successors, (120), 53 states have internal predecessors, (120), 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) [2024-10-13 22:07:25,522 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 70 transitions. [2024-10-13 22:07:25,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-10-13 22:07:25,522 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 22:07:25,522 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 15, 15, 1, 1, 1, 1, 1, 1] [2024-10-13 22:07:25,538 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2024-10-13 22:07:25,722 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 22:07:25,723 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 22:07:25,723 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 22:07:25,723 INFO L85 PathProgramCache]: Analyzing trace with hash -1785649478, now seen corresponding path program 29 times [2024-10-13 22:07:25,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 22:07:25,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225475331] [2024-10-13 22:07:25,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 22:07:25,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 22:07:25,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 22:07:26,460 INFO L134 CoverageAnalysis]: Checked inductivity of 481 backedges. 0 proven. 481 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 22:07:26,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 22:07:26,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [225475331] [2024-10-13 22:07:26,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [225475331] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 22:07:26,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [441436668] [2024-10-13 22:07:26,461 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-13 22:07:26,461 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 22:07:26,461 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 22:07:26,462 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 22:07:26,463 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2024-10-13 22:07:26,942 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 16 check-sat command(s) [2024-10-13 22:07:26,942 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 22:07:26,945 INFO L255 TraceCheckSpWp]: Trace formula consists of 343 conjuncts, 73 conjuncts are in the unsatisfiable core [2024-10-13 22:07:26,946 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 22:07:27,343 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-10-13 22:07:28,068 INFO L134 CoverageAnalysis]: Checked inductivity of 481 backedges. 0 proven. 481 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 22:07:28,068 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 22:07:28,181 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2024-10-13 22:07:28,182 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2024-10-13 22:07:28,194 INFO L134 CoverageAnalysis]: Checked inductivity of 481 backedges. 0 proven. 481 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 22:07:28,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [441436668] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 22:07:28,194 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 22:07:28,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36, 36] total 71 [2024-10-13 22:07:28,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781216387] [2024-10-13 22:07:28,194 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 22:07:28,195 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 71 states [2024-10-13 22:07:28,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 22:07:28,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2024-10-13 22:07:28,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=208, Invalid=4762, Unknown=0, NotChecked=0, Total=4970 [2024-10-13 22:07:28,196 INFO L87 Difference]: Start difference. First operand 69 states and 70 transitions. Second operand has 71 states, 71 states have (on average 1.9577464788732395) internal successors, (139), 71 states have internal predecessors, (139), 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) [2024-10-13 22:07:28,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 22:07:28,871 INFO L93 Difference]: Finished difference Result 75 states and 76 transitions. [2024-10-13 22:07:28,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2024-10-13 22:07:28,872 INFO L78 Accepts]: Start accepts. Automaton has has 71 states, 71 states have (on average 1.9577464788732395) internal successors, (139), 71 states have internal predecessors, (139), 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 68 [2024-10-13 22:07:28,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 22:07:28,872 INFO L225 Difference]: With dead ends: 75 [2024-10-13 22:07:28,872 INFO L226 Difference]: Without dead ends: 73 [2024-10-13 22:07:28,873 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 100 SyntacticMatches, 1 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 679 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=216, Invalid=4896, Unknown=0, NotChecked=0, Total=5112 [2024-10-13 22:07:28,873 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 16 mSDsluCounter, 845 mSDsCounter, 0 mSdLazyCounter, 2520 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 865 SdHoareTripleChecker+Invalid, 2522 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 2520 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-13 22:07:28,873 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 865 Invalid, 2522 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 2520 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-13 22:07:28,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2024-10-13 22:07:28,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 72. [2024-10-13 22:07:28,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 71 states have (on average 1.028169014084507) internal successors, (73), 71 states have internal predecessors, (73), 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) [2024-10-13 22:07:28,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 73 transitions. [2024-10-13 22:07:28,884 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 73 transitions. Word has length 68 [2024-10-13 22:07:28,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 22:07:28,884 INFO L471 AbstractCegarLoop]: Abstraction has 72 states and 73 transitions. [2024-10-13 22:07:28,884 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 71 states, 71 states have (on average 1.9577464788732395) internal successors, (139), 71 states have internal predecessors, (139), 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) [2024-10-13 22:07:28,884 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 73 transitions. [2024-10-13 22:07:28,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-10-13 22:07:28,884 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 22:07:28,884 INFO L215 NwaCegarLoop]: trace histogram [17, 16, 16, 16, 1, 1, 1, 1, 1, 1] [2024-10-13 22:07:28,898 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2024-10-13 22:07:29,084 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2024-10-13 22:07:29,085 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 22:07:29,085 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 22:07:29,085 INFO L85 PathProgramCache]: Analyzing trace with hash 1186122627, now seen corresponding path program 30 times [2024-10-13 22:07:29,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 22:07:29,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414296698] [2024-10-13 22:07:29,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 22:07:29,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 22:07:29,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 22:07:29,607 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 346 proven. 182 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 22:07:29,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 22:07:29,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414296698] [2024-10-13 22:07:29,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1414296698] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 22:07:29,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [13170208] [2024-10-13 22:07:29,608 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-10-13 22:07:29,608 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 22:07:29,608 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 22:07:29,609 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 22:07:29,610 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2024-10-13 22:07:30,223 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 17 check-sat command(s) [2024-10-13 22:07:30,223 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 22:07:30,226 INFO L255 TraceCheckSpWp]: Trace formula consists of 353 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-10-13 22:07:30,227 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 22:07:30,642 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 392 proven. 136 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 22:07:30,642 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 22:07:30,948 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 392 proven. 136 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 22:07:30,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [13170208] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 22:07:30,949 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 22:07:30,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37, 37] total 56 [2024-10-13 22:07:30,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407590641] [2024-10-13 22:07:30,949 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 22:07:30,949 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2024-10-13 22:07:30,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 22:07:30,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2024-10-13 22:07:30,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=725, Invalid=2355, Unknown=0, NotChecked=0, Total=3080 [2024-10-13 22:07:30,950 INFO L87 Difference]: Start difference. First operand 72 states and 73 transitions. Second operand has 56 states, 56 states have (on average 2.267857142857143) internal successors, (127), 56 states have internal predecessors, (127), 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) [2024-10-13 22:07:31,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 22:07:31,205 INFO L93 Difference]: Finished difference Result 134 states and 136 transitions. [2024-10-13 22:07:31,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-10-13 22:07:31,206 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 56 states have (on average 2.267857142857143) internal successors, (127), 56 states have internal predecessors, (127), 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 71 [2024-10-13 22:07:31,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 22:07:31,206 INFO L225 Difference]: With dead ends: 134 [2024-10-13 22:07:31,206 INFO L226 Difference]: Without dead ends: 79 [2024-10-13 22:07:31,207 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 90 SyntacticMatches, 33 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2379 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1213, Invalid=3899, Unknown=0, NotChecked=0, Total=5112 [2024-10-13 22:07:31,207 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 210 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 322 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 210 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 427 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 322 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-13 22:07:31,207 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [210 Valid, 156 Invalid, 427 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 322 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-13 22:07:31,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2024-10-13 22:07:31,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 73. [2024-10-13 22:07:31,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 72 states have (on average 1.0277777777777777) internal successors, (74), 72 states have internal predecessors, (74), 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) [2024-10-13 22:07:31,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 74 transitions. [2024-10-13 22:07:31,218 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 74 transitions. Word has length 71 [2024-10-13 22:07:31,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 22:07:31,218 INFO L471 AbstractCegarLoop]: Abstraction has 73 states and 74 transitions. [2024-10-13 22:07:31,218 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 56 states have (on average 2.267857142857143) internal successors, (127), 56 states have internal predecessors, (127), 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) [2024-10-13 22:07:31,218 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 74 transitions. [2024-10-13 22:07:31,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-10-13 22:07:31,219 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 22:07:31,219 INFO L215 NwaCegarLoop]: trace histogram [17, 17, 16, 16, 1, 1, 1, 1, 1, 1] [2024-10-13 22:07:31,234 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2024-10-13 22:07:31,419 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 22:07:31,419 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 22:07:31,420 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 22:07:31,420 INFO L85 PathProgramCache]: Analyzing trace with hash 255865949, now seen corresponding path program 31 times [2024-10-13 22:07:31,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 22:07:31,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [952189486] [2024-10-13 22:07:31,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 22:07:31,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 22:07:31,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 22:07:32,225 INFO L134 CoverageAnalysis]: Checked inductivity of 545 backedges. 0 proven. 545 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 22:07:32,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 22:07:32,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [952189486] [2024-10-13 22:07:32,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [952189486] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 22:07:32,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [447062894] [2024-10-13 22:07:32,225 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-10-13 22:07:32,225 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 22:07:32,225 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 22:07:32,226 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 22:07:32,227 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2024-10-13 22:07:32,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 22:07:32,363 INFO L255 TraceCheckSpWp]: Trace formula consists of 362 conjuncts, 77 conjuncts are in the unsatisfiable core [2024-10-13 22:07:32,364 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 22:07:32,839 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-10-13 22:07:33,613 INFO L134 CoverageAnalysis]: Checked inductivity of 545 backedges. 0 proven. 545 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 22:07:33,613 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 22:07:33,740 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2024-10-13 22:07:33,741 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2024-10-13 22:07:33,754 INFO L134 CoverageAnalysis]: Checked inductivity of 545 backedges. 0 proven. 545 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 22:07:33,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [447062894] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 22:07:33,754 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 22:07:33,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38, 38] total 75 [2024-10-13 22:07:33,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371678626] [2024-10-13 22:07:33,754 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 22:07:33,754 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 75 states [2024-10-13 22:07:33,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 22:07:33,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2024-10-13 22:07:33,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=220, Invalid=5330, Unknown=0, NotChecked=0, Total=5550 [2024-10-13 22:07:33,755 INFO L87 Difference]: Start difference. First operand 73 states and 74 transitions. Second operand has 75 states, 75 states have (on average 1.96) internal successors, (147), 75 states have internal predecessors, (147), 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) [2024-10-13 22:07:34,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 22:07:34,560 INFO L93 Difference]: Finished difference Result 79 states and 80 transitions. [2024-10-13 22:07:34,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2024-10-13 22:07:34,560 INFO L78 Accepts]: Start accepts. Automaton has has 75 states, 75 states have (on average 1.96) internal successors, (147), 75 states have internal predecessors, (147), 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 72 [2024-10-13 22:07:34,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 22:07:34,561 INFO L225 Difference]: With dead ends: 79 [2024-10-13 22:07:34,561 INFO L226 Difference]: Without dead ends: 77 [2024-10-13 22:07:34,561 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 106 SyntacticMatches, 1 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 755 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=228, Invalid=5472, Unknown=0, NotChecked=0, Total=5700 [2024-10-13 22:07:34,561 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 8 mSDsluCounter, 991 mSDsCounter, 0 mSdLazyCounter, 3027 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 1012 SdHoareTripleChecker+Invalid, 3028 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3027 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-10-13 22:07:34,562 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 1012 Invalid, 3028 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3027 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-10-13 22:07:34,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2024-10-13 22:07:34,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 76. [2024-10-13 22:07:34,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 75 states have (on average 1.0266666666666666) internal successors, (77), 75 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) [2024-10-13 22:07:34,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 77 transitions. [2024-10-13 22:07:34,574 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 77 transitions. Word has length 72 [2024-10-13 22:07:34,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 22:07:34,574 INFO L471 AbstractCegarLoop]: Abstraction has 76 states and 77 transitions. [2024-10-13 22:07:34,574 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 75 states, 75 states have (on average 1.96) internal successors, (147), 75 states have internal predecessors, (147), 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) [2024-10-13 22:07:34,574 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 77 transitions. [2024-10-13 22:07:34,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-10-13 22:07:34,574 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 22:07:34,574 INFO L215 NwaCegarLoop]: trace histogram [18, 17, 17, 17, 1, 1, 1, 1, 1, 1] [2024-10-13 22:07:34,589 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2024-10-13 22:07:34,775 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 22:07:34,775 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 22:07:34,775 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 22:07:34,775 INFO L85 PathProgramCache]: Analyzing trace with hash -1059670272, now seen corresponding path program 32 times [2024-10-13 22:07:34,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 22:07:34,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869549167] [2024-10-13 22:07:34,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 22:07:34,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 22:07:34,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 22:07:35,274 INFO L134 CoverageAnalysis]: Checked inductivity of 595 backedges. 393 proven. 202 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 22:07:35,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 22:07:35,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869549167] [2024-10-13 22:07:35,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [869549167] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 22:07:35,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [884375798] [2024-10-13 22:07:35,275 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-13 22:07:35,275 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 22:07:35,275 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 22:07:35,276 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 22:07:35,277 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2024-10-13 22:07:35,419 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-13 22:07:35,420 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 22:07:35,421 INFO L255 TraceCheckSpWp]: Trace formula consists of 372 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-10-13 22:07:35,422 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 22:07:35,870 INFO L134 CoverageAnalysis]: Checked inductivity of 595 backedges. 442 proven. 153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 22:07:35,870 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 22:07:36,212 INFO L134 CoverageAnalysis]: Checked inductivity of 595 backedges. 442 proven. 153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 22:07:36,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [884375798] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 22:07:36,213 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 22:07:36,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39, 39] total 59 [2024-10-13 22:07:36,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109993462] [2024-10-13 22:07:36,213 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 22:07:36,213 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2024-10-13 22:07:36,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 22:07:36,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2024-10-13 22:07:36,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=803, Invalid=2619, Unknown=0, NotChecked=0, Total=3422 [2024-10-13 22:07:36,214 INFO L87 Difference]: Start difference. First operand 76 states and 77 transitions. Second operand has 59 states, 59 states have (on average 2.2711864406779663) internal successors, (134), 59 states have internal predecessors, (134), 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) [2024-10-13 22:07:36,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 22:07:36,450 INFO L93 Difference]: Finished difference Result 141 states and 143 transitions. [2024-10-13 22:07:36,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2024-10-13 22:07:36,450 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 59 states have (on average 2.2711864406779663) internal successors, (134), 59 states have internal predecessors, (134), 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 75 [2024-10-13 22:07:36,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 22:07:36,450 INFO L225 Difference]: With dead ends: 141 [2024-10-13 22:07:36,451 INFO L226 Difference]: Without dead ends: 83 [2024-10-13 22:07:36,451 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 95 SyntacticMatches, 35 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2655 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1347, Invalid=4353, Unknown=0, NotChecked=0, Total=5700 [2024-10-13 22:07:36,452 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 168 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 347 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 168 SdHoareTripleChecker+Invalid, 431 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 347 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-13 22:07:36,452 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [168 Valid, 168 Invalid, 431 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 347 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-13 22:07:36,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2024-10-13 22:07:36,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 77. [2024-10-13 22:07:36,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 76 states have (on average 1.0263157894736843) internal successors, (78), 76 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) [2024-10-13 22:07:36,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 78 transitions. [2024-10-13 22:07:36,463 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 78 transitions. Word has length 75 [2024-10-13 22:07:36,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 22:07:36,463 INFO L471 AbstractCegarLoop]: Abstraction has 77 states and 78 transitions. [2024-10-13 22:07:36,463 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 59 states have (on average 2.2711864406779663) internal successors, (134), 59 states have internal predecessors, (134), 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) [2024-10-13 22:07:36,463 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 78 transitions. [2024-10-13 22:07:36,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-10-13 22:07:36,463 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 22:07:36,463 INFO L215 NwaCegarLoop]: trace histogram [18, 18, 17, 17, 1, 1, 1, 1, 1, 1] [2024-10-13 22:07:36,476 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2024-10-13 22:07:36,664 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2024-10-13 22:07:36,664 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 22:07:36,664 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 22:07:36,664 INFO L85 PathProgramCache]: Analyzing trace with hash 1081090778, now seen corresponding path program 33 times [2024-10-13 22:07:36,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 22:07:36,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59054941] [2024-10-13 22:07:36,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 22:07:36,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 22:07:36,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 22:07:37,531 INFO L134 CoverageAnalysis]: Checked inductivity of 613 backedges. 0 proven. 613 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 22:07:37,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 22:07:37,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59054941] [2024-10-13 22:07:37,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [59054941] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 22:07:37,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [681826949] [2024-10-13 22:07:37,531 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-13 22:07:37,531 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 22:07:37,532 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 22:07:37,532 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 22:07:37,533 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2024-10-13 22:07:38,886 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 18 check-sat command(s) [2024-10-13 22:07:38,886 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 22:07:38,890 INFO L255 TraceCheckSpWp]: Trace formula consists of 381 conjuncts, 118 conjuncts are in the unsatisfiable core [2024-10-13 22:07:38,892 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 22:07:39,383 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-10-13 22:07:40,087 INFO L134 CoverageAnalysis]: Checked inductivity of 613 backedges. 0 proven. 613 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 22:07:40,087 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 22:07:40,197 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2024-10-13 22:07:40,198 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2024-10-13 22:07:40,217 INFO L134 CoverageAnalysis]: Checked inductivity of 613 backedges. 0 proven. 613 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 22:07:40,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [681826949] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 22:07:40,217 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 22:07:40,217 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40, 40] total 76 [2024-10-13 22:07:40,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614542767] [2024-10-13 22:07:40,217 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 22:07:40,218 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 76 states [2024-10-13 22:07:40,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 22:07:40,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2024-10-13 22:07:40,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=203, Invalid=5497, Unknown=0, NotChecked=0, Total=5700 [2024-10-13 22:07:40,219 INFO L87 Difference]: Start difference. First operand 77 states and 78 transitions. Second operand has 76 states, 76 states have (on average 1.9605263157894737) internal successors, (149), 76 states have internal predecessors, (149), 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) [2024-10-13 22:07:41,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 22:07:41,174 INFO L93 Difference]: Finished difference Result 83 states and 84 transitions. [2024-10-13 22:07:41,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2024-10-13 22:07:41,174 INFO L78 Accepts]: Start accepts. Automaton has has 76 states, 76 states have (on average 1.9605263157894737) internal successors, (149), 76 states have internal predecessors, (149), 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 76 [2024-10-13 22:07:41,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 22:07:41,175 INFO L225 Difference]: With dead ends: 83 [2024-10-13 22:07:41,175 INFO L226 Difference]: Without dead ends: 81 [2024-10-13 22:07:41,175 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 700 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=210, Invalid=5642, Unknown=0, NotChecked=0, Total=5852 [2024-10-13 22:07:41,175 INFO L432 NwaCegarLoop]: 22 mSDtfsCounter, 8 mSDsluCounter, 1114 mSDsCounter, 0 mSdLazyCounter, 3504 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 1136 SdHoareTripleChecker+Invalid, 3505 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3504 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-10-13 22:07:41,176 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 1136 Invalid, 3505 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3504 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-10-13 22:07:41,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2024-10-13 22:07:41,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 80. [2024-10-13 22:07:41,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 79 states have (on average 1.0253164556962024) internal successors, (81), 79 states have internal predecessors, (81), 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) [2024-10-13 22:07:41,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 81 transitions. [2024-10-13 22:07:41,188 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 81 transitions. Word has length 76 [2024-10-13 22:07:41,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 22:07:41,188 INFO L471 AbstractCegarLoop]: Abstraction has 80 states and 81 transitions. [2024-10-13 22:07:41,188 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 76 states, 76 states have (on average 1.9605263157894737) internal successors, (149), 76 states have internal predecessors, (149), 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) [2024-10-13 22:07:41,189 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 81 transitions. [2024-10-13 22:07:41,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-10-13 22:07:41,189 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 22:07:41,189 INFO L215 NwaCegarLoop]: trace histogram [19, 18, 18, 18, 1, 1, 1, 1, 1, 1] [2024-10-13 22:07:41,204 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2024-10-13 22:07:41,389 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2024-10-13 22:07:41,390 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 22:07:41,390 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 22:07:41,390 INFO L85 PathProgramCache]: Analyzing trace with hash -1179591837, now seen corresponding path program 34 times [2024-10-13 22:07:41,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 22:07:41,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3169530] [2024-10-13 22:07:41,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 22:07:41,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 22:07:41,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 22:07:41,947 INFO L134 CoverageAnalysis]: Checked inductivity of 666 backedges. 443 proven. 223 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 22:07:41,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 22:07:41,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [3169530] [2024-10-13 22:07:41,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [3169530] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 22:07:41,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1090834588] [2024-10-13 22:07:41,947 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-13 22:07:41,947 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 22:07:41,948 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 22:07:41,948 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 22:07:41,949 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2024-10-13 22:07:42,567 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-13 22:07:42,567 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 22:07:42,569 INFO L255 TraceCheckSpWp]: Trace formula consists of 391 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-10-13 22:07:42,571 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 22:07:43,100 INFO L134 CoverageAnalysis]: Checked inductivity of 666 backedges. 495 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 22:07:43,100 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 22:07:43,474 INFO L134 CoverageAnalysis]: Checked inductivity of 666 backedges. 495 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 22:07:43,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1090834588] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 22:07:43,475 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 22:07:43,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41, 41] total 62 [2024-10-13 22:07:43,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79318893] [2024-10-13 22:07:43,475 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 22:07:43,475 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2024-10-13 22:07:43,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 22:07:43,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2024-10-13 22:07:43,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=885, Invalid=2897, Unknown=0, NotChecked=0, Total=3782 [2024-10-13 22:07:43,477 INFO L87 Difference]: Start difference. First operand 80 states and 81 transitions. Second operand has 62 states, 62 states have (on average 2.274193548387097) internal successors, (141), 62 states have internal predecessors, (141), 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) [2024-10-13 22:07:43,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 22:07:43,737 INFO L93 Difference]: Finished difference Result 148 states and 150 transitions. [2024-10-13 22:07:43,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2024-10-13 22:07:43,737 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 62 states have (on average 2.274193548387097) internal successors, (141), 62 states have internal predecessors, (141), 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 79 [2024-10-13 22:07:43,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 22:07:43,738 INFO L225 Difference]: With dead ends: 148 [2024-10-13 22:07:43,738 INFO L226 Difference]: Without dead ends: 87 [2024-10-13 22:07:43,738 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 100 SyntacticMatches, 37 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2946 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1488, Invalid=4832, Unknown=0, NotChecked=0, Total=6320 [2024-10-13 22:07:43,739 INFO L432 NwaCegarLoop]: 22 mSDtfsCounter, 276 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 320 mSolverCounterSat, 138 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 276 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 458 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 138 IncrementalHoareTripleChecker+Valid, 320 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-13 22:07:43,739 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [276 Valid, 154 Invalid, 458 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [138 Valid, 320 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-13 22:07:43,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2024-10-13 22:07:43,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 81. [2024-10-13 22:07:43,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 80 states have (on average 1.025) internal successors, (82), 80 states have internal predecessors, (82), 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) [2024-10-13 22:07:43,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 82 transitions. [2024-10-13 22:07:43,751 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 82 transitions. Word has length 79 [2024-10-13 22:07:43,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 22:07:43,751 INFO L471 AbstractCegarLoop]: Abstraction has 81 states and 82 transitions. [2024-10-13 22:07:43,751 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 62 states have (on average 2.274193548387097) internal successors, (141), 62 states have internal predecessors, (141), 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) [2024-10-13 22:07:43,751 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 82 transitions. [2024-10-13 22:07:43,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-10-13 22:07:43,752 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 22:07:43,752 INFO L215 NwaCegarLoop]: trace histogram [19, 19, 18, 18, 1, 1, 1, 1, 1, 1] [2024-10-13 22:07:43,766 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Ended with exit code 0 [2024-10-13 22:07:43,952 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2024-10-13 22:07:43,952 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 22:07:43,952 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 22:07:43,952 INFO L85 PathProgramCache]: Analyzing trace with hash -1264793027, now seen corresponding path program 35 times [2024-10-13 22:07:43,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 22:07:43,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899303018] [2024-10-13 22:07:43,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 22:07:43,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 22:07:43,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 22:07:44,889 INFO L134 CoverageAnalysis]: Checked inductivity of 685 backedges. 0 proven. 685 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 22:07:44,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 22:07:44,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [899303018] [2024-10-13 22:07:44,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [899303018] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 22:07:44,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [464846969] [2024-10-13 22:07:44,890 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-13 22:07:44,890 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 22:07:44,890 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 22:07:44,891 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 22:07:44,891 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2024-10-13 22:07:45,393 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 19 check-sat command(s) [2024-10-13 22:07:45,394 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 22:07:45,397 INFO L255 TraceCheckSpWp]: Trace formula consists of 400 conjuncts, 85 conjuncts are in the unsatisfiable core [2024-10-13 22:07:45,399 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 22:07:45,944 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-10-13 22:07:46,870 INFO L134 CoverageAnalysis]: Checked inductivity of 685 backedges. 0 proven. 685 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 22:07:46,870 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 22:07:47,005 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2024-10-13 22:07:47,006 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2024-10-13 22:07:47,024 INFO L134 CoverageAnalysis]: Checked inductivity of 685 backedges. 0 proven. 685 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 22:07:47,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [464846969] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 22:07:47,024 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 22:07:47,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42, 42] total 83 [2024-10-13 22:07:47,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173573373] [2024-10-13 22:07:47,024 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 22:07:47,025 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 83 states [2024-10-13 22:07:47,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 22:07:47,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2024-10-13 22:07:47,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=244, Invalid=6562, Unknown=0, NotChecked=0, Total=6806 [2024-10-13 22:07:47,026 INFO L87 Difference]: Start difference. First operand 81 states and 82 transitions. Second operand has 83 states, 83 states have (on average 1.963855421686747) internal successors, (163), 83 states have internal predecessors, (163), 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) [2024-10-13 22:07:48,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 22:07:48,103 INFO L93 Difference]: Finished difference Result 87 states and 88 transitions. [2024-10-13 22:07:48,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2024-10-13 22:07:48,104 INFO L78 Accepts]: Start accepts. Automaton has has 83 states, 83 states have (on average 1.963855421686747) internal successors, (163), 83 states have internal predecessors, (163), 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 80 [2024-10-13 22:07:48,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 22:07:48,104 INFO L225 Difference]: With dead ends: 87 [2024-10-13 22:07:48,104 INFO L226 Difference]: Without dead ends: 85 [2024-10-13 22:07:48,105 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 118 SyntacticMatches, 1 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 919 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=252, Invalid=6720, Unknown=0, NotChecked=0, Total=6972 [2024-10-13 22:07:48,105 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 10 mSDsluCounter, 1219 mSDsCounter, 0 mSdLazyCounter, 3685 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 1242 SdHoareTripleChecker+Invalid, 3686 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3685 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-10-13 22:07:48,105 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 1242 Invalid, 3686 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3685 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-10-13 22:07:48,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2024-10-13 22:07:48,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 84. [2024-10-13 22:07:48,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 83 states have (on average 1.0240963855421688) internal successors, (85), 83 states have internal predecessors, (85), 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) [2024-10-13 22:07:48,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 85 transitions. [2024-10-13 22:07:48,119 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 85 transitions. Word has length 80 [2024-10-13 22:07:48,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 22:07:48,119 INFO L471 AbstractCegarLoop]: Abstraction has 84 states and 85 transitions. [2024-10-13 22:07:48,119 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 83 states, 83 states have (on average 1.963855421686747) internal successors, (163), 83 states have internal predecessors, (163), 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) [2024-10-13 22:07:48,119 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 85 transitions. [2024-10-13 22:07:48,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2024-10-13 22:07:48,119 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 22:07:48,119 INFO L215 NwaCegarLoop]: trace histogram [20, 19, 19, 19, 1, 1, 1, 1, 1, 1] [2024-10-13 22:07:48,134 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Ended with exit code 0 [2024-10-13 22:07:48,319 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37,37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 22:07:48,320 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 22:07:48,320 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 22:07:48,320 INFO L85 PathProgramCache]: Analyzing trace with hash 303813920, now seen corresponding path program 36 times [2024-10-13 22:07:48,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 22:07:48,320 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614530241] [2024-10-13 22:07:48,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 22:07:48,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 22:07:48,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 22:07:48,975 INFO L134 CoverageAnalysis]: Checked inductivity of 741 backedges. 496 proven. 245 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 22:07:48,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 22:07:48,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [614530241] [2024-10-13 22:07:48,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [614530241] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 22:07:48,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [377451568] [2024-10-13 22:07:48,975 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-10-13 22:07:48,975 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 22:07:48,975 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 22:07:48,977 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 22:07:48,977 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2024-10-13 22:07:49,684 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 20 check-sat command(s) [2024-10-13 22:07:49,685 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 22:07:49,688 INFO L255 TraceCheckSpWp]: Trace formula consists of 410 conjuncts, 42 conjuncts are in the unsatisfiable core [2024-10-13 22:07:49,689 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 22:07:50,217 INFO L134 CoverageAnalysis]: Checked inductivity of 741 backedges. 551 proven. 190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 22:07:50,217 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 22:07:50,637 INFO L134 CoverageAnalysis]: Checked inductivity of 741 backedges. 551 proven. 190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 22:07:50,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [377451568] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 22:07:50,637 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 22:07:50,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43, 43] total 65 [2024-10-13 22:07:50,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712301033] [2024-10-13 22:07:50,638 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 22:07:50,638 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2024-10-13 22:07:50,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 22:07:50,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2024-10-13 22:07:50,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=971, Invalid=3189, Unknown=0, NotChecked=0, Total=4160 [2024-10-13 22:07:50,639 INFO L87 Difference]: Start difference. First operand 84 states and 85 transitions. Second operand has 65 states, 65 states have (on average 2.276923076923077) internal successors, (148), 65 states have internal predecessors, (148), 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) [2024-10-13 22:07:50,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 22:07:50,944 INFO L93 Difference]: Finished difference Result 155 states and 157 transitions. [2024-10-13 22:07:50,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2024-10-13 22:07:50,944 INFO L78 Accepts]: Start accepts. Automaton has has 65 states, 65 states have (on average 2.276923076923077) internal successors, (148), 65 states have internal predecessors, (148), 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 83 [2024-10-13 22:07:50,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 22:07:50,945 INFO L225 Difference]: With dead ends: 155 [2024-10-13 22:07:50,945 INFO L226 Difference]: Without dead ends: 91 [2024-10-13 22:07:50,945 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 105 SyntacticMatches, 39 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3252 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1636, Invalid=5336, Unknown=0, NotChecked=0, Total=6972 [2024-10-13 22:07:50,946 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 298 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 328 mSolverCounterSat, 149 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 298 SdHoareTripleChecker+Valid, 161 SdHoareTripleChecker+Invalid, 477 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 149 IncrementalHoareTripleChecker+Valid, 328 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-13 22:07:50,946 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [298 Valid, 161 Invalid, 477 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [149 Valid, 328 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-13 22:07:50,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2024-10-13 22:07:50,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 85. [2024-10-13 22:07:50,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 84 states have (on average 1.0238095238095237) internal successors, (86), 84 states have internal predecessors, (86), 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) [2024-10-13 22:07:50,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 86 transitions. [2024-10-13 22:07:50,959 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 86 transitions. Word has length 83 [2024-10-13 22:07:50,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 22:07:50,959 INFO L471 AbstractCegarLoop]: Abstraction has 85 states and 86 transitions. [2024-10-13 22:07:50,959 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 65 states, 65 states have (on average 2.276923076923077) internal successors, (148), 65 states have internal predecessors, (148), 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) [2024-10-13 22:07:50,959 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 86 transitions. [2024-10-13 22:07:50,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2024-10-13 22:07:50,959 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 22:07:50,959 INFO L215 NwaCegarLoop]: trace histogram [20, 20, 19, 19, 1, 1, 1, 1, 1, 1] [2024-10-13 22:07:50,973 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Forceful destruction successful, exit code 0 [2024-10-13 22:07:51,160 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2024-10-13 22:07:51,160 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 22:07:51,160 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 22:07:51,160 INFO L85 PathProgramCache]: Analyzing trace with hash -983513350, now seen corresponding path program 37 times [2024-10-13 22:07:51,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 22:07:51,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328867860] [2024-10-13 22:07:51,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 22:07:51,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 22:07:51,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 22:07:52,143 INFO L134 CoverageAnalysis]: Checked inductivity of 761 backedges. 0 proven. 761 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 22:07:52,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 22:07:52,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [328867860] [2024-10-13 22:07:52,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [328867860] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 22:07:52,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1968651665] [2024-10-13 22:07:52,143 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-10-13 22:07:52,144 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 22:07:52,144 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 22:07:52,145 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 22:07:52,145 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2024-10-13 22:07:52,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 22:07:52,312 INFO L255 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 89 conjuncts are in the unsatisfiable core [2024-10-13 22:07:52,313 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 22:07:52,917 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-10-13 22:07:53,988 INFO L134 CoverageAnalysis]: Checked inductivity of 761 backedges. 0 proven. 761 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 22:07:53,988 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 22:07:54,141 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2024-10-13 22:07:54,143 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2024-10-13 22:07:54,157 INFO L134 CoverageAnalysis]: Checked inductivity of 761 backedges. 0 proven. 761 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 22:07:54,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1968651665] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 22:07:54,157 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 22:07:54,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 44, 44] total 87 [2024-10-13 22:07:54,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953476361] [2024-10-13 22:07:54,157 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 22:07:54,157 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 87 states [2024-10-13 22:07:54,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 22:07:54,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2024-10-13 22:07:54,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=256, Invalid=7226, Unknown=0, NotChecked=0, Total=7482 [2024-10-13 22:07:54,158 INFO L87 Difference]: Start difference. First operand 85 states and 86 transitions. Second operand has 87 states, 87 states have (on average 1.9655172413793103) internal successors, (171), 87 states have internal predecessors, (171), 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) [2024-10-13 22:07:55,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 22:07:55,271 INFO L93 Difference]: Finished difference Result 91 states and 92 transitions. [2024-10-13 22:07:55,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2024-10-13 22:07:55,271 INFO L78 Accepts]: Start accepts. Automaton has has 87 states, 87 states have (on average 1.9655172413793103) internal successors, (171), 87 states have internal predecessors, (171), 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 84 [2024-10-13 22:07:55,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 22:07:55,272 INFO L225 Difference]: With dead ends: 91 [2024-10-13 22:07:55,272 INFO L226 Difference]: Without dead ends: 89 [2024-10-13 22:07:55,272 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 124 SyntacticMatches, 1 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1007 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=264, Invalid=7392, Unknown=0, NotChecked=0, Total=7656 [2024-10-13 22:07:55,273 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 20 mSDsluCounter, 1331 mSDsCounter, 0 mSdLazyCounter, 4117 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 1355 SdHoareTripleChecker+Invalid, 4119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-10-13 22:07:55,273 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 1355 Invalid, 4119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4117 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-10-13 22:07:55,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2024-10-13 22:07:55,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 88. [2024-10-13 22:07:55,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 87 states have (on average 1.0229885057471264) internal successors, (89), 87 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) [2024-10-13 22:07:55,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 89 transitions. [2024-10-13 22:07:55,286 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 89 transitions. Word has length 84 [2024-10-13 22:07:55,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 22:07:55,286 INFO L471 AbstractCegarLoop]: Abstraction has 88 states and 89 transitions. [2024-10-13 22:07:55,286 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 87 states, 87 states have (on average 1.9655172413793103) internal successors, (171), 87 states have internal predecessors, (171), 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) [2024-10-13 22:07:55,287 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 89 transitions. [2024-10-13 22:07:55,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2024-10-13 22:07:55,287 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 22:07:55,287 INFO L215 NwaCegarLoop]: trace histogram [21, 20, 20, 20, 1, 1, 1, 1, 1, 1] [2024-10-13 22:07:55,300 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Forceful destruction successful, exit code 0 [2024-10-13 22:07:55,487 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2024-10-13 22:07:55,487 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 22:07:55,488 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 22:07:55,488 INFO L85 PathProgramCache]: Analyzing trace with hash 425476931, now seen corresponding path program 38 times [2024-10-13 22:07:55,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 22:07:55,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175402136] [2024-10-13 22:07:55,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 22:07:55,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 22:07:55,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 22:07:56,131 INFO L134 CoverageAnalysis]: Checked inductivity of 820 backedges. 552 proven. 268 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 22:07:56,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 22:07:56,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175402136] [2024-10-13 22:07:56,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [175402136] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 22:07:56,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [630999639] [2024-10-13 22:07:56,132 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-13 22:07:56,132 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 22:07:56,132 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 22:07:56,133 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 22:07:56,134 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2024-10-13 22:07:56,308 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-13 22:07:56,308 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 22:07:56,310 INFO L255 TraceCheckSpWp]: Trace formula consists of 429 conjuncts, 44 conjuncts are in the unsatisfiable core [2024-10-13 22:07:56,311 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 22:07:56,931 INFO L134 CoverageAnalysis]: Checked inductivity of 820 backedges. 610 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 22:07:56,931 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 22:07:57,385 INFO L134 CoverageAnalysis]: Checked inductivity of 820 backedges. 610 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 22:07:57,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [630999639] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 22:07:57,386 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 22:07:57,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 45, 45] total 68 [2024-10-13 22:07:57,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755884684] [2024-10-13 22:07:57,386 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 22:07:57,386 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 68 states [2024-10-13 22:07:57,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 22:07:57,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2024-10-13 22:07:57,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1061, Invalid=3495, Unknown=0, NotChecked=0, Total=4556 [2024-10-13 22:07:57,387 INFO L87 Difference]: Start difference. First operand 88 states and 89 transitions. Second operand has 68 states, 68 states have (on average 2.2794117647058822) internal successors, (155), 68 states have internal predecessors, (155), 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) [2024-10-13 22:07:57,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 22:07:57,716 INFO L93 Difference]: Finished difference Result 162 states and 164 transitions. [2024-10-13 22:07:57,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2024-10-13 22:07:57,716 INFO L78 Accepts]: Start accepts. Automaton has has 68 states, 68 states have (on average 2.2794117647058822) internal successors, (155), 68 states have internal predecessors, (155), 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 87 [2024-10-13 22:07:57,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 22:07:57,717 INFO L225 Difference]: With dead ends: 162 [2024-10-13 22:07:57,717 INFO L226 Difference]: Without dead ends: 95 [2024-10-13 22:07:57,717 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 110 SyntacticMatches, 41 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3573 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1791, Invalid=5865, Unknown=0, NotChecked=0, Total=7656 [2024-10-13 22:07:57,717 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 262 mSDsluCounter, 228 mSDsCounter, 0 mSdLazyCounter, 519 mSolverCounterSat, 131 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 262 SdHoareTripleChecker+Valid, 252 SdHoareTripleChecker+Invalid, 650 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 131 IncrementalHoareTripleChecker+Valid, 519 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-13 22:07:57,718 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [262 Valid, 252 Invalid, 650 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [131 Valid, 519 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-13 22:07:57,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2024-10-13 22:07:57,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 89. [2024-10-13 22:07:57,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 88 states have (on average 1.0227272727272727) internal successors, (90), 88 states have internal predecessors, (90), 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) [2024-10-13 22:07:57,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 90 transitions. [2024-10-13 22:07:57,733 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 90 transitions. Word has length 87 [2024-10-13 22:07:57,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 22:07:57,733 INFO L471 AbstractCegarLoop]: Abstraction has 89 states and 90 transitions. [2024-10-13 22:07:57,733 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 68 states, 68 states have (on average 2.2794117647058822) internal successors, (155), 68 states have internal predecessors, (155), 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) [2024-10-13 22:07:57,733 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 90 transitions. [2024-10-13 22:07:57,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2024-10-13 22:07:57,733 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 22:07:57,733 INFO L215 NwaCegarLoop]: trace histogram [21, 21, 20, 20, 1, 1, 1, 1, 1, 1] [2024-10-13 22:07:57,746 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Forceful destruction successful, exit code 0 [2024-10-13 22:07:57,934 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,40 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 22:07:57,934 INFO L396 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 22:07:57,934 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 22:07:57,934 INFO L85 PathProgramCache]: Analyzing trace with hash -624904163, now seen corresponding path program 39 times [2024-10-13 22:07:57,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 22:07:57,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121525619] [2024-10-13 22:07:57,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 22:07:57,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 22:07:57,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 22:07:59,229 INFO L134 CoverageAnalysis]: Checked inductivity of 841 backedges. 0 proven. 841 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 22:07:59,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 22:07:59,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121525619] [2024-10-13 22:07:59,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2121525619] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 22:07:59,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [546061183] [2024-10-13 22:07:59,230 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-13 22:07:59,230 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 22:07:59,230 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 22:07:59,231 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 22:07:59,232 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2024-10-13 22:08:01,552 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 21 check-sat command(s) [2024-10-13 22:08:01,553 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 22:08:01,557 INFO L255 TraceCheckSpWp]: Trace formula consists of 438 conjuncts, 101 conjuncts are in the unsatisfiable core [2024-10-13 22:08:01,560 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 22:08:01,599 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-10-13 22:08:02,530 INFO L134 CoverageAnalysis]: Checked inductivity of 841 backedges. 0 proven. 841 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 22:08:02,531 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 22:08:03,586 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2024-10-13 22:08:03,587 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2024-10-13 22:08:04,489 INFO L134 CoverageAnalysis]: Checked inductivity of 841 backedges. 0 proven. 841 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 22:08:04,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [546061183] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 22:08:04,490 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 22:08:04,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 47, 47] total 112 [2024-10-13 22:08:04,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578813763] [2024-10-13 22:08:04,490 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 22:08:04,490 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 112 states [2024-10-13 22:08:04,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 22:08:04,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 112 interpolants. [2024-10-13 22:08:04,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=356, Invalid=12076, Unknown=0, NotChecked=0, Total=12432 [2024-10-13 22:08:04,492 INFO L87 Difference]: Start difference. First operand 89 states and 90 transitions. Second operand has 112 states, 112 states have (on average 2.080357142857143) internal successors, (233), 112 states have internal predecessors, (233), 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) [2024-10-13 22:08:05,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 22:08:05,928 INFO L93 Difference]: Finished difference Result 95 states and 96 transitions. [2024-10-13 22:08:05,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2024-10-13 22:08:05,928 INFO L78 Accepts]: Start accepts. Automaton has has 112 states, 112 states have (on average 2.080357142857143) internal successors, (233), 112 states have internal predecessors, (233), 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 88 [2024-10-13 22:08:05,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 22:08:05,929 INFO L225 Difference]: With dead ends: 95 [2024-10-13 22:08:05,929 INFO L226 Difference]: Without dead ends: 93 [2024-10-13 22:08:05,930 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2273 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=365, Invalid=12291, Unknown=0, NotChecked=0, Total=12656 [2024-10-13 22:08:05,930 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 22 mSDsluCounter, 1515 mSDsCounter, 0 mSdLazyCounter, 5138 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 1539 SdHoareTripleChecker+Invalid, 5140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-10-13 22:08:05,930 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 1539 Invalid, 5140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5138 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-10-13 22:08:05,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2024-10-13 22:08:05,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 92. [2024-10-13 22:08:05,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 91 states have (on average 1.021978021978022) internal successors, (93), 91 states have internal predecessors, (93), 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) [2024-10-13 22:08:05,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 93 transitions. [2024-10-13 22:08:05,944 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 93 transitions. Word has length 88 [2024-10-13 22:08:05,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 22:08:05,944 INFO L471 AbstractCegarLoop]: Abstraction has 92 states and 93 transitions. [2024-10-13 22:08:05,945 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 112 states, 112 states have (on average 2.080357142857143) internal successors, (233), 112 states have internal predecessors, (233), 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) [2024-10-13 22:08:05,945 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 93 transitions. [2024-10-13 22:08:05,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-10-13 22:08:05,945 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 22:08:05,945 INFO L215 NwaCegarLoop]: trace histogram [22, 21, 21, 21, 1, 1, 1, 1, 1, 1] [2024-10-13 22:08:05,961 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Ended with exit code 0 [2024-10-13 22:08:06,145 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2024-10-13 22:08:06,145 INFO L396 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 22:08:06,146 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 22:08:06,146 INFO L85 PathProgramCache]: Analyzing trace with hash -2126865600, now seen corresponding path program 40 times [2024-10-13 22:08:06,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 22:08:06,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839736894] [2024-10-13 22:08:06,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 22:08:06,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 22:08:06,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 22:08:06,831 INFO L134 CoverageAnalysis]: Checked inductivity of 903 backedges. 611 proven. 292 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 22:08:06,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 22:08:06,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [839736894] [2024-10-13 22:08:06,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [839736894] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 22:08:06,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1313135030] [2024-10-13 22:08:06,831 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-13 22:08:06,831 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 22:08:06,832 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 22:08:06,832 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 22:08:06,834 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2024-10-13 22:08:07,535 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-13 22:08:07,535 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 22:08:07,539 INFO L255 TraceCheckSpWp]: Trace formula consists of 448 conjuncts, 46 conjuncts are in the unsatisfiable core [2024-10-13 22:08:07,540 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 22:08:08,187 INFO L134 CoverageAnalysis]: Checked inductivity of 903 backedges. 672 proven. 231 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 22:08:08,187 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 22:08:08,686 INFO L134 CoverageAnalysis]: Checked inductivity of 903 backedges. 672 proven. 231 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 22:08:08,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1313135030] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 22:08:08,686 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 22:08:08,686 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47, 47] total 71 [2024-10-13 22:08:08,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980160604] [2024-10-13 22:08:08,686 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 22:08:08,686 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 71 states [2024-10-13 22:08:08,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 22:08:08,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2024-10-13 22:08:08,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1155, Invalid=3815, Unknown=0, NotChecked=0, Total=4970 [2024-10-13 22:08:08,687 INFO L87 Difference]: Start difference. First operand 92 states and 93 transitions. Second operand has 71 states, 71 states have (on average 2.2816901408450705) internal successors, (162), 71 states have internal predecessors, (162), 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) [2024-10-13 22:08:09,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 22:08:09,021 INFO L93 Difference]: Finished difference Result 169 states and 171 transitions. [2024-10-13 22:08:09,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2024-10-13 22:08:09,021 INFO L78 Accepts]: Start accepts. Automaton has has 71 states, 71 states have (on average 2.2816901408450705) internal successors, (162), 71 states have internal predecessors, (162), 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 91 [2024-10-13 22:08:09,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 22:08:09,022 INFO L225 Difference]: With dead ends: 169 [2024-10-13 22:08:09,022 INFO L226 Difference]: Without dead ends: 99 [2024-10-13 22:08:09,023 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 115 SyntacticMatches, 43 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3909 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1953, Invalid=6419, Unknown=0, NotChecked=0, Total=8372 [2024-10-13 22:08:09,024 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 226 mSDsluCounter, 199 mSDsCounter, 0 mSdLazyCounter, 461 mSolverCounterSat, 113 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 226 SdHoareTripleChecker+Valid, 224 SdHoareTripleChecker+Invalid, 574 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 113 IncrementalHoareTripleChecker+Valid, 461 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-13 22:08:09,024 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [226 Valid, 224 Invalid, 574 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [113 Valid, 461 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-13 22:08:09,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2024-10-13 22:08:09,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 93. [2024-10-13 22:08:09,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 92 states have (on average 1.0217391304347827) internal successors, (94), 92 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) [2024-10-13 22:08:09,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 94 transitions. [2024-10-13 22:08:09,050 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 94 transitions. Word has length 91 [2024-10-13 22:08:09,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 22:08:09,051 INFO L471 AbstractCegarLoop]: Abstraction has 93 states and 94 transitions. [2024-10-13 22:08:09,051 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 71 states, 71 states have (on average 2.2816901408450705) internal successors, (162), 71 states have internal predecessors, (162), 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) [2024-10-13 22:08:09,051 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 94 transitions. [2024-10-13 22:08:09,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2024-10-13 22:08:09,051 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 22:08:09,051 INFO L215 NwaCegarLoop]: trace histogram [22, 22, 21, 21, 1, 1, 1, 1, 1, 1] [2024-10-13 22:08:09,067 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Ended with exit code 0 [2024-10-13 22:08:09,251 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,42 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 22:08:09,252 INFO L396 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 22:08:09,252 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 22:08:09,252 INFO L85 PathProgramCache]: Analyzing trace with hash 1598362394, now seen corresponding path program 41 times [2024-10-13 22:08:09,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 22:08:09,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787932014] [2024-10-13 22:08:09,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 22:08:09,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 22:08:09,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 22:08:10,365 INFO L134 CoverageAnalysis]: Checked inductivity of 925 backedges. 0 proven. 925 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 22:08:10,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 22:08:10,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787932014] [2024-10-13 22:08:10,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1787932014] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 22:08:10,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [356202884] [2024-10-13 22:08:10,365 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-13 22:08:10,366 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 22:08:10,366 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 22:08:10,367 INFO L229 MonitoredProcess]: Starting monitored process 43 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 22:08:10,368 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2024-10-13 22:08:11,786 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 22 check-sat command(s) [2024-10-13 22:08:11,786 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 22:08:11,792 INFO L255 TraceCheckSpWp]: Trace formula consists of 457 conjuncts, 141 conjuncts are in the unsatisfiable core [2024-10-13 22:08:11,795 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 22:08:12,580 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-10-13 22:08:13,837 INFO L134 CoverageAnalysis]: Checked inductivity of 925 backedges. 0 proven. 925 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 22:08:13,837 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 22:08:13,993 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2024-10-13 22:08:13,995 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2024-10-13 22:08:14,013 INFO L134 CoverageAnalysis]: Checked inductivity of 925 backedges. 0 proven. 925 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 22:08:14,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [356202884] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 22:08:14,014 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 22:08:14,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48, 48] total 95 [2024-10-13 22:08:14,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632116421] [2024-10-13 22:08:14,014 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 22:08:14,014 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 95 states [2024-10-13 22:08:14,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 22:08:14,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 95 interpolants. [2024-10-13 22:08:14,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=280, Invalid=8650, Unknown=0, NotChecked=0, Total=8930 [2024-10-13 22:08:14,015 INFO L87 Difference]: Start difference. First operand 93 states and 94 transitions. Second operand has 95 states, 95 states have (on average 1.9684210526315788) internal successors, (187), 95 states have internal predecessors, (187), 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) [2024-10-13 22:08:15,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 22:08:15,374 INFO L93 Difference]: Finished difference Result 99 states and 100 transitions. [2024-10-13 22:08:15,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2024-10-13 22:08:15,374 INFO L78 Accepts]: Start accepts. Automaton has has 95 states, 95 states have (on average 1.9684210526315788) internal successors, (187), 95 states have internal predecessors, (187), 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 92 [2024-10-13 22:08:15,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 22:08:15,375 INFO L225 Difference]: With dead ends: 99 [2024-10-13 22:08:15,375 INFO L226 Difference]: Without dead ends: 97 [2024-10-13 22:08:15,375 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 136 SyntacticMatches, 1 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1195 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=288, Invalid=8832, Unknown=0, NotChecked=0, Total=9120 [2024-10-13 22:08:15,376 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 14 mSDsluCounter, 1586 mSDsCounter, 0 mSdLazyCounter, 5018 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 1612 SdHoareTripleChecker+Invalid, 5020 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5018 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-10-13 22:08:15,376 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 1612 Invalid, 5020 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5018 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-10-13 22:08:15,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2024-10-13 22:08:15,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 96. [2024-10-13 22:08:15,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 95 states have (on average 1.0210526315789474) internal successors, (97), 95 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) [2024-10-13 22:08:15,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 97 transitions. [2024-10-13 22:08:15,392 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 97 transitions. Word has length 92 [2024-10-13 22:08:15,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 22:08:15,392 INFO L471 AbstractCegarLoop]: Abstraction has 96 states and 97 transitions. [2024-10-13 22:08:15,392 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 95 states, 95 states have (on average 1.9684210526315788) internal successors, (187), 95 states have internal predecessors, (187), 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) [2024-10-13 22:08:15,392 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 97 transitions. [2024-10-13 22:08:15,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2024-10-13 22:08:15,393 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 22:08:15,393 INFO L215 NwaCegarLoop]: trace histogram [23, 22, 22, 22, 1, 1, 1, 1, 1, 1] [2024-10-13 22:08:15,412 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Forceful destruction successful, exit code 0 [2024-10-13 22:08:15,593 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,43 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 22:08:15,594 INFO L396 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 22:08:15,594 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 22:08:15,594 INFO L85 PathProgramCache]: Analyzing trace with hash -1483537629, now seen corresponding path program 42 times [2024-10-13 22:08:15,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 22:08:15,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [935838258] [2024-10-13 22:08:15,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 22:08:15,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 22:08:15,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 22:08:16,341 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 673 proven. 317 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 22:08:16,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 22:08:16,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [935838258] [2024-10-13 22:08:16,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [935838258] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 22:08:16,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [652928049] [2024-10-13 22:08:16,341 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-10-13 22:08:16,341 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 22:08:16,341 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 22:08:16,342 INFO L229 MonitoredProcess]: Starting monitored process 44 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 22:08:16,343 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2024-10-13 22:08:18,363 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 23 check-sat command(s) [2024-10-13 22:08:18,363 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 22:08:18,369 INFO L255 TraceCheckSpWp]: Trace formula consists of 467 conjuncts, 48 conjuncts are in the unsatisfiable core [2024-10-13 22:08:18,371 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 22:08:19,067 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 737 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 22:08:19,067 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 22:08:19,618 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 737 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 22:08:19,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [652928049] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 22:08:19,618 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 22:08:19,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49, 49] total 74 [2024-10-13 22:08:19,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849565249] [2024-10-13 22:08:19,618 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 22:08:19,619 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 74 states [2024-10-13 22:08:19,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 22:08:19,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2024-10-13 22:08:19,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1253, Invalid=4149, Unknown=0, NotChecked=0, Total=5402 [2024-10-13 22:08:19,620 INFO L87 Difference]: Start difference. First operand 96 states and 97 transitions. Second operand has 74 states, 74 states have (on average 2.2837837837837838) internal successors, (169), 74 states have internal predecessors, (169), 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)