./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem14_label59.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3289d67d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/eca-rers2012/Problem14_label59.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 86b33a3328c808cec34f54492a07e8640c009630cc5a59a5959b66da0514436c --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-16 04:06:37,195 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-16 04:06:37,249 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-16 04:06:37,256 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-16 04:06:37,258 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-16 04:06:37,281 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-16 04:06:37,281 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-16 04:06:37,282 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-16 04:06:37,282 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-16 04:06:37,284 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-16 04:06:37,284 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-16 04:06:37,284 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-16 04:06:37,285 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-16 04:06:37,285 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-16 04:06:37,285 INFO L153 SettingsManager]: * Use SBE=true [2024-11-16 04:06:37,286 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-16 04:06:37,286 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-16 04:06:37,286 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-16 04:06:37,286 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-16 04:06:37,287 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-16 04:06:37,287 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-16 04:06:37,287 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-16 04:06:37,288 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-16 04:06:37,288 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-16 04:06:37,288 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-16 04:06:37,288 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-16 04:06:37,288 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-16 04:06:37,289 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-16 04:06:37,289 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-16 04:06:37,289 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-16 04:06:37,289 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-16 04:06:37,290 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-16 04:06:37,290 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 04:06:37,290 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-16 04:06:37,290 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-16 04:06:37,290 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-16 04:06:37,291 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-16 04:06:37,291 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-16 04:06:37,291 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-16 04:06:37,291 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-16 04:06:37,292 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-16 04:06:37,292 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-16 04:06:37,292 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 86b33a3328c808cec34f54492a07e8640c009630cc5a59a5959b66da0514436c [2024-11-16 04:06:37,505 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-16 04:06:37,534 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-16 04:06:37,537 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-16 04:06:37,538 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-16 04:06:37,538 INFO L274 PluginConnector]: CDTParser initialized [2024-11-16 04:06:37,539 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem14_label59.c [2024-11-16 04:06:38,773 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-16 04:06:38,969 INFO L384 CDTParser]: Found 1 translation units. [2024-11-16 04:06:38,970 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem14_label59.c [2024-11-16 04:06:38,983 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/da95717d8/7d21ba2e3f6a4e3b9cda64b71da82e84/FLAG1a2e7b3bf [2024-11-16 04:06:39,321 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/da95717d8/7d21ba2e3f6a4e3b9cda64b71da82e84 [2024-11-16 04:06:39,323 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-16 04:06:39,324 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-16 04:06:39,325 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-16 04:06:39,326 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-16 04:06:39,329 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-16 04:06:39,330 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 04:06:39" (1/1) ... [2024-11-16 04:06:39,330 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5971e0c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:06:39, skipping insertion in model container [2024-11-16 04:06:39,331 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 04:06:39" (1/1) ... [2024-11-16 04:06:39,366 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-16 04:06:39,542 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem14_label59.c[4234,4247] [2024-11-16 04:06:39,684 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 04:06:39,691 INFO L200 MainTranslator]: Completed pre-run [2024-11-16 04:06:39,711 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem14_label59.c[4234,4247] [2024-11-16 04:06:39,770 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 04:06:39,785 INFO L204 MainTranslator]: Completed translation [2024-11-16 04:06:39,786 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:06:39 WrapperNode [2024-11-16 04:06:39,787 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-16 04:06:39,787 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-16 04:06:39,787 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-16 04:06:39,788 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-16 04:06:39,792 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:06:39" (1/1) ... [2024-11-16 04:06:39,809 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:06:39" (1/1) ... [2024-11-16 04:06:39,894 INFO L138 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 858 [2024-11-16 04:06:39,899 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-16 04:06:39,900 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-16 04:06:39,900 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-16 04:06:39,900 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-16 04:06:39,909 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:06:39" (1/1) ... [2024-11-16 04:06:39,909 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:06:39" (1/1) ... [2024-11-16 04:06:39,916 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:06:39" (1/1) ... [2024-11-16 04:06:39,966 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-16 04:06:39,966 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:06:39" (1/1) ... [2024-11-16 04:06:39,967 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:06:39" (1/1) ... [2024-11-16 04:06:39,989 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:06:39" (1/1) ... [2024-11-16 04:06:39,991 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:06:39" (1/1) ... [2024-11-16 04:06:39,997 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:06:39" (1/1) ... [2024-11-16 04:06:40,000 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:06:39" (1/1) ... [2024-11-16 04:06:40,007 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-16 04:06:40,009 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-16 04:06:40,009 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-16 04:06:40,009 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-16 04:06:40,010 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:06:39" (1/1) ... [2024-11-16 04:06:40,014 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 04:06:40,023 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 04:06:40,037 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-16 04:06:40,039 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-16 04:06:40,070 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-16 04:06:40,070 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-16 04:06:40,070 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-16 04:06:40,070 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-16 04:06:40,123 INFO L256 CfgBuilder]: Building ICFG [2024-11-16 04:06:40,125 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-16 04:06:41,154 INFO L? ?]: Removed 123 outVars from TransFormulas that were not future-live. [2024-11-16 04:06:41,154 INFO L307 CfgBuilder]: Performing block encoding [2024-11-16 04:06:41,178 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-16 04:06:41,181 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-16 04:06:41,181 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 04:06:41 BoogieIcfgContainer [2024-11-16 04:06:41,182 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-16 04:06:41,183 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-16 04:06:41,183 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-16 04:06:41,187 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-16 04:06:41,187 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 04:06:39" (1/3) ... [2024-11-16 04:06:41,188 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c1e6d71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 04:06:41, skipping insertion in model container [2024-11-16 04:06:41,188 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:06:39" (2/3) ... [2024-11-16 04:06:41,189 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c1e6d71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 04:06:41, skipping insertion in model container [2024-11-16 04:06:41,189 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 04:06:41" (3/3) ... [2024-11-16 04:06:41,191 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem14_label59.c [2024-11-16 04:06:41,203 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-16 04:06:41,203 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-16 04:06:41,257 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-16 04:06:41,262 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;@2ce5ce21, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-16 04:06:41,262 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-16 04:06:41,270 INFO L276 IsEmpty]: Start isEmpty. Operand has 248 states, 246 states have (on average 1.7276422764227641) internal successors, (425), 247 states have internal predecessors, (425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:06:41,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-11-16 04:06:41,279 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:06:41,280 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 04:06:41,280 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:06:41,284 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:06:41,284 INFO L85 PathProgramCache]: Analyzing trace with hash 1672488037, now seen corresponding path program 1 times [2024-11-16 04:06:41,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:06:41,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314701387] [2024-11-16 04:06:41,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:06:41,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:06:41,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:06:41,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 04:06:41,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:06:41,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [314701387] [2024-11-16 04:06:41,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [314701387] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 04:06:41,594 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 04:06:41,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-16 04:06:41,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476423534] [2024-11-16 04:06:41,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:06:41,602 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 04:06:41,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:06:41,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 04:06:41,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 04:06:41,629 INFO L87 Difference]: Start difference. First operand has 248 states, 246 states have (on average 1.7276422764227641) internal successors, (425), 247 states have internal predecessors, (425), 0 states have call successors, (0), 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 3 states, 3 states have (on average 14.0) internal successors, (42), 2 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:06:42,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:06:42,354 INFO L93 Difference]: Finished difference Result 675 states and 1206 transitions. [2024-11-16 04:06:42,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 04:06:42,357 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 2 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) Word has length 42 [2024-11-16 04:06:42,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:06:42,365 INFO L225 Difference]: With dead ends: 675 [2024-11-16 04:06:42,365 INFO L226 Difference]: Without dead ends: 363 [2024-11-16 04:06:42,371 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 04:06:42,375 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 196 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 598 mSolverCounterSat, 139 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 196 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 737 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 139 IncrementalHoareTripleChecker+Valid, 598 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-16 04:06:42,376 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [196 Valid, 34 Invalid, 737 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [139 Valid, 598 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-16 04:06:42,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363 states. [2024-11-16 04:06:42,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363 to 363. [2024-11-16 04:06:42,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 363 states, 362 states have (on average 1.632596685082873) internal successors, (591), 362 states have internal predecessors, (591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:06:42,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 591 transitions. [2024-11-16 04:06:42,441 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 591 transitions. Word has length 42 [2024-11-16 04:06:42,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:06:42,441 INFO L471 AbstractCegarLoop]: Abstraction has 363 states and 591 transitions. [2024-11-16 04:06:42,441 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 2 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:06:42,441 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 591 transitions. [2024-11-16 04:06:42,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-11-16 04:06:42,444 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:06:42,444 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 04:06:42,444 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-16 04:06:42,444 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:06:42,445 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:06:42,445 INFO L85 PathProgramCache]: Analyzing trace with hash 1464797089, now seen corresponding path program 1 times [2024-11-16 04:06:42,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:06:42,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65691219] [2024-11-16 04:06:42,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:06:42,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:06:42,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:06:42,595 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 04:06:42,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:06:42,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65691219] [2024-11-16 04:06:42,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [65691219] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 04:06:42,596 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 04:06:42,596 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-16 04:06:42,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614723980] [2024-11-16 04:06:42,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:06:42,597 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 04:06:42,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:06:42,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 04:06:42,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 04:06:42,598 INFO L87 Difference]: Start difference. First operand 363 states and 591 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 2 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:06:43,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:06:43,175 INFO L93 Difference]: Finished difference Result 1085 states and 1769 transitions. [2024-11-16 04:06:43,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 04:06:43,176 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 2 states have internal predecessors, (108), 0 states have call successors, (0), 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 108 [2024-11-16 04:06:43,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:06:43,178 INFO L225 Difference]: With dead ends: 1085 [2024-11-16 04:06:43,178 INFO L226 Difference]: Without dead ends: 724 [2024-11-16 04:06:43,184 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 04:06:43,184 INFO L432 NwaCegarLoop]: 86 mSDtfsCounter, 135 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 460 mSolverCounterSat, 131 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 591 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 131 IncrementalHoareTripleChecker+Valid, 460 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-16 04:06:43,185 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 92 Invalid, 591 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [131 Valid, 460 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-16 04:06:43,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 724 states. [2024-11-16 04:06:43,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 724 to 721. [2024-11-16 04:06:43,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 721 states, 720 states have (on average 1.4194444444444445) internal successors, (1022), 720 states have internal predecessors, (1022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:06:43,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 721 states to 721 states and 1022 transitions. [2024-11-16 04:06:43,212 INFO L78 Accepts]: Start accepts. Automaton has 721 states and 1022 transitions. Word has length 108 [2024-11-16 04:06:43,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:06:43,212 INFO L471 AbstractCegarLoop]: Abstraction has 721 states and 1022 transitions. [2024-11-16 04:06:43,212 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 2 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:06:43,212 INFO L276 IsEmpty]: Start isEmpty. Operand 721 states and 1022 transitions. [2024-11-16 04:06:43,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2024-11-16 04:06:43,214 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:06:43,214 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 04:06:43,215 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-16 04:06:43,215 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:06:43,219 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:06:43,219 INFO L85 PathProgramCache]: Analyzing trace with hash 705386232, now seen corresponding path program 1 times [2024-11-16 04:06:43,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:06:43,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131689447] [2024-11-16 04:06:43,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:06:43,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:06:43,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:06:43,303 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 04:06:43,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:06:43,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [131689447] [2024-11-16 04:06:43,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [131689447] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 04:06:43,305 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 04:06:43,305 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-16 04:06:43,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420551455] [2024-11-16 04:06:43,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:06:43,307 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 04:06:43,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:06:43,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 04:06:43,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 04:06:43,309 INFO L87 Difference]: Start difference. First operand 721 states and 1022 transitions. Second operand has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 2 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:06:43,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:06:43,798 INFO L93 Difference]: Finished difference Result 1798 states and 2629 transitions. [2024-11-16 04:06:43,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 04:06:43,799 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 2 states have internal predecessors, (109), 0 states have call successors, (0), 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 109 [2024-11-16 04:06:43,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:06:43,803 INFO L225 Difference]: With dead ends: 1798 [2024-11-16 04:06:43,803 INFO L226 Difference]: Without dead ends: 1079 [2024-11-16 04:06:43,805 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 04:06:43,806 INFO L432 NwaCegarLoop]: 56 mSDtfsCounter, 126 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 431 mSolverCounterSat, 202 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 633 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 202 IncrementalHoareTripleChecker+Valid, 431 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-16 04:06:43,806 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [126 Valid, 60 Invalid, 633 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [202 Valid, 431 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-16 04:06:43,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1079 states. [2024-11-16 04:06:43,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1079 to 1079. [2024-11-16 04:06:43,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1079 states, 1078 states have (on average 1.3812615955473098) internal successors, (1489), 1078 states have internal predecessors, (1489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:06:43,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1079 states to 1079 states and 1489 transitions. [2024-11-16 04:06:43,831 INFO L78 Accepts]: Start accepts. Automaton has 1079 states and 1489 transitions. Word has length 109 [2024-11-16 04:06:43,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:06:43,832 INFO L471 AbstractCegarLoop]: Abstraction has 1079 states and 1489 transitions. [2024-11-16 04:06:43,832 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 2 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:06:43,832 INFO L276 IsEmpty]: Start isEmpty. Operand 1079 states and 1489 transitions. [2024-11-16 04:06:43,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-11-16 04:06:43,833 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:06:43,834 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 04:06:43,834 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-16 04:06:43,834 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:06:43,834 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:06:43,834 INFO L85 PathProgramCache]: Analyzing trace with hash 571985239, now seen corresponding path program 1 times [2024-11-16 04:06:43,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:06:43,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462459683] [2024-11-16 04:06:43,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:06:43,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:06:43,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:06:44,032 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 04:06:44,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:06:44,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462459683] [2024-11-16 04:06:44,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1462459683] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 04:06:44,033 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 04:06:44,033 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 04:06:44,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280883529] [2024-11-16 04:06:44,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:06:44,034 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 04:06:44,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:06:44,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 04:06:44,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-16 04:06:44,035 INFO L87 Difference]: Start difference. First operand 1079 states and 1489 transitions. Second operand has 4 states, 4 states have (on average 28.0) internal successors, (112), 3 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:06:44,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:06:44,786 INFO L93 Difference]: Finished difference Result 2514 states and 3382 transitions. [2024-11-16 04:06:44,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-16 04:06:44,786 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.0) internal successors, (112), 3 states have internal predecessors, (112), 0 states have call successors, (0), 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 112 [2024-11-16 04:06:44,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:06:44,791 INFO L225 Difference]: With dead ends: 2514 [2024-11-16 04:06:44,791 INFO L226 Difference]: Without dead ends: 1437 [2024-11-16 04:06:44,795 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-16 04:06:44,798 INFO L432 NwaCegarLoop]: 112 mSDtfsCounter, 441 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 941 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 441 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 968 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 941 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-16 04:06:44,799 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [441 Valid, 128 Invalid, 968 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 941 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-16 04:06:44,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1437 states. [2024-11-16 04:06:44,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1437 to 1258. [2024-11-16 04:06:44,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1258 states, 1257 states have (on average 1.3365155131264916) internal successors, (1680), 1257 states have internal predecessors, (1680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:06:44,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1258 states to 1258 states and 1680 transitions. [2024-11-16 04:06:44,828 INFO L78 Accepts]: Start accepts. Automaton has 1258 states and 1680 transitions. Word has length 112 [2024-11-16 04:06:44,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:06:44,828 INFO L471 AbstractCegarLoop]: Abstraction has 1258 states and 1680 transitions. [2024-11-16 04:06:44,828 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.0) internal successors, (112), 3 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:06:44,829 INFO L276 IsEmpty]: Start isEmpty. Operand 1258 states and 1680 transitions. [2024-11-16 04:06:44,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2024-11-16 04:06:44,832 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:06:44,832 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 04:06:44,832 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-16 04:06:44,833 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:06:44,833 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:06:44,833 INFO L85 PathProgramCache]: Analyzing trace with hash 160512085, now seen corresponding path program 1 times [2024-11-16 04:06:44,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:06:44,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423081403] [2024-11-16 04:06:44,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:06:44,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:06:44,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:06:45,023 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 04:06:45,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:06:45,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423081403] [2024-11-16 04:06:45,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1423081403] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 04:06:45,026 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 04:06:45,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 04:06:45,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304934805] [2024-11-16 04:06:45,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:06:45,026 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 04:06:45,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:06:45,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 04:06:45,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-16 04:06:45,029 INFO L87 Difference]: Start difference. First operand 1258 states and 1680 transitions. Second operand has 4 states, 4 states have (on average 30.75) internal successors, (123), 3 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) [2024-11-16 04:06:45,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:06:45,629 INFO L93 Difference]: Finished difference Result 2905 states and 3797 transitions. [2024-11-16 04:06:45,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-16 04:06:45,630 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.75) internal successors, (123), 3 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 123 [2024-11-16 04:06:45,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:06:45,634 INFO L225 Difference]: With dead ends: 2905 [2024-11-16 04:06:45,634 INFO L226 Difference]: Without dead ends: 1619 [2024-11-16 04:06:45,636 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-16 04:06:45,636 INFO L432 NwaCegarLoop]: 116 mSDtfsCounter, 104 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 723 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 784 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 723 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-16 04:06:45,636 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 132 Invalid, 784 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 723 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-16 04:06:45,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1619 states. [2024-11-16 04:06:45,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1619 to 1616. [2024-11-16 04:06:45,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1616 states, 1615 states have (on average 1.1758513931888546) internal successors, (1899), 1615 states have internal predecessors, (1899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:06:45,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1616 states to 1616 states and 1899 transitions. [2024-11-16 04:06:45,660 INFO L78 Accepts]: Start accepts. Automaton has 1616 states and 1899 transitions. Word has length 123 [2024-11-16 04:06:45,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:06:45,660 INFO L471 AbstractCegarLoop]: Abstraction has 1616 states and 1899 transitions. [2024-11-16 04:06:45,660 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.75) internal successors, (123), 3 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) [2024-11-16 04:06:45,660 INFO L276 IsEmpty]: Start isEmpty. Operand 1616 states and 1899 transitions. [2024-11-16 04:06:45,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2024-11-16 04:06:45,662 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:06:45,662 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 04:06:45,662 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-16 04:06:45,662 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:06:45,662 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:06:45,663 INFO L85 PathProgramCache]: Analyzing trace with hash -581068881, now seen corresponding path program 1 times [2024-11-16 04:06:45,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:06:45,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956102235] [2024-11-16 04:06:45,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:06:45,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:06:45,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:06:45,863 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 146 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 04:06:45,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:06:45,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1956102235] [2024-11-16 04:06:45,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1956102235] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 04:06:45,863 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 04:06:45,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 04:06:45,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294826747] [2024-11-16 04:06:45,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:06:45,864 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 04:06:45,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:06:45,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 04:06:45,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 04:06:45,865 INFO L87 Difference]: Start difference. First operand 1616 states and 1899 transitions. Second operand has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:06:46,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:06:46,310 INFO L93 Difference]: Finished difference Result 3767 states and 4447 transitions. [2024-11-16 04:06:46,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 04:06:46,313 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 0 states have call successors, (0), 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 218 [2024-11-16 04:06:46,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:06:46,318 INFO L225 Difference]: With dead ends: 3767 [2024-11-16 04:06:46,318 INFO L226 Difference]: Without dead ends: 2153 [2024-11-16 04:06:46,320 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 04:06:46,320 INFO L432 NwaCegarLoop]: 75 mSDtfsCounter, 111 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 469 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 519 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 469 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-16 04:06:46,320 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [111 Valid, 81 Invalid, 519 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 469 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-16 04:06:46,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2153 states. [2024-11-16 04:06:46,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2153 to 2153. [2024-11-16 04:06:46,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2153 states, 2152 states have (on average 1.1505576208178439) internal successors, (2476), 2152 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:06:46,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2153 states to 2153 states and 2476 transitions. [2024-11-16 04:06:46,363 INFO L78 Accepts]: Start accepts. Automaton has 2153 states and 2476 transitions. Word has length 218 [2024-11-16 04:06:46,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:06:46,363 INFO L471 AbstractCegarLoop]: Abstraction has 2153 states and 2476 transitions. [2024-11-16 04:06:46,363 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:06:46,364 INFO L276 IsEmpty]: Start isEmpty. Operand 2153 states and 2476 transitions. [2024-11-16 04:06:46,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 337 [2024-11-16 04:06:46,366 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:06:46,366 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 04:06:46,366 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-16 04:06:46,366 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:06:46,367 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:06:46,367 INFO L85 PathProgramCache]: Analyzing trace with hash 329781614, now seen corresponding path program 1 times [2024-11-16 04:06:46,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:06:46,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72937886] [2024-11-16 04:06:46,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:06:46,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:06:46,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:06:46,655 INFO L134 CoverageAnalysis]: Checked inductivity of 382 backedges. 116 proven. 0 refuted. 0 times theorem prover too weak. 266 trivial. 0 not checked. [2024-11-16 04:06:46,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:06:46,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72937886] [2024-11-16 04:06:46,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [72937886] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 04:06:46,656 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 04:06:46,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 04:06:46,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008071566] [2024-11-16 04:06:46,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:06:46,656 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 04:06:46,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:06:46,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 04:06:46,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-16 04:06:46,657 INFO L87 Difference]: Start difference. First operand 2153 states and 2476 transitions. Second operand has 4 states, 4 states have (on average 38.0) internal successors, (152), 3 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:06:47,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:06:47,124 INFO L93 Difference]: Finished difference Result 4364 states and 5034 transitions. [2024-11-16 04:06:47,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-16 04:06:47,124 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.0) internal successors, (152), 3 states have internal predecessors, (152), 0 states have call successors, (0), 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 336 [2024-11-16 04:06:47,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:06:47,129 INFO L225 Difference]: With dead ends: 4364 [2024-11-16 04:06:47,129 INFO L226 Difference]: Without dead ends: 2332 [2024-11-16 04:06:47,131 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-16 04:06:47,132 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 125 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 686 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 732 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 686 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-16 04:06:47,132 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [125 Valid, 23 Invalid, 732 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 686 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-16 04:06:47,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2332 states. [2024-11-16 04:06:47,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2332 to 2153. [2024-11-16 04:06:47,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2153 states, 2152 states have (on average 1.1026951672862453) internal successors, (2373), 2152 states have internal predecessors, (2373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:06:47,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2153 states to 2153 states and 2373 transitions. [2024-11-16 04:06:47,156 INFO L78 Accepts]: Start accepts. Automaton has 2153 states and 2373 transitions. Word has length 336 [2024-11-16 04:06:47,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:06:47,157 INFO L471 AbstractCegarLoop]: Abstraction has 2153 states and 2373 transitions. [2024-11-16 04:06:47,157 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.0) internal successors, (152), 3 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:06:47,157 INFO L276 IsEmpty]: Start isEmpty. Operand 2153 states and 2373 transitions. [2024-11-16 04:06:47,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 426 [2024-11-16 04:06:47,160 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:06:47,161 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 04:06:47,161 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-16 04:06:47,161 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:06:47,161 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:06:47,161 INFO L85 PathProgramCache]: Analyzing trace with hash 1594743076, now seen corresponding path program 1 times [2024-11-16 04:06:47,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:06:47,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674047297] [2024-11-16 04:06:47,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:06:47,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:06:47,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:06:47,551 INFO L134 CoverageAnalysis]: Checked inductivity of 433 backedges. 116 proven. 0 refuted. 0 times theorem prover too weak. 317 trivial. 0 not checked. [2024-11-16 04:06:47,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:06:47,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674047297] [2024-11-16 04:06:47,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [674047297] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 04:06:47,552 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 04:06:47,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 04:06:47,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731825776] [2024-11-16 04:06:47,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:06:47,554 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 04:06:47,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:06:47,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 04:06:47,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 04:06:47,554 INFO L87 Difference]: Start difference. First operand 2153 states and 2373 transitions. Second operand has 3 states, 3 states have (on average 71.66666666666667) internal successors, (215), 3 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:06:47,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:06:47,921 INFO L93 Difference]: Finished difference Result 4483 states and 4971 transitions. [2024-11-16 04:06:47,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 04:06:47,922 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 71.66666666666667) internal successors, (215), 3 states have internal predecessors, (215), 0 states have call successors, (0), 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 425 [2024-11-16 04:06:47,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:06:47,927 INFO L225 Difference]: With dead ends: 4483 [2024-11-16 04:06:47,928 INFO L226 Difference]: Without dead ends: 2511 [2024-11-16 04:06:47,930 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 04:06:47,931 INFO L432 NwaCegarLoop]: 245 mSDtfsCounter, 141 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 438 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 SdHoareTripleChecker+Valid, 252 SdHoareTripleChecker+Invalid, 448 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 438 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-16 04:06:47,932 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [141 Valid, 252 Invalid, 448 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 438 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-16 04:06:47,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2511 states. [2024-11-16 04:06:47,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2511 to 2332. [2024-11-16 04:06:47,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2332 states, 2331 states have (on average 1.1016731016731016) internal successors, (2568), 2331 states have internal predecessors, (2568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:06:47,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2332 states to 2332 states and 2568 transitions. [2024-11-16 04:06:47,983 INFO L78 Accepts]: Start accepts. Automaton has 2332 states and 2568 transitions. Word has length 425 [2024-11-16 04:06:47,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:06:47,984 INFO L471 AbstractCegarLoop]: Abstraction has 2332 states and 2568 transitions. [2024-11-16 04:06:47,984 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 71.66666666666667) internal successors, (215), 3 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:06:47,984 INFO L276 IsEmpty]: Start isEmpty. Operand 2332 states and 2568 transitions. [2024-11-16 04:06:47,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 433 [2024-11-16 04:06:47,988 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:06:47,988 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 04:06:47,988 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-16 04:06:47,988 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:06:47,989 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:06:47,989 INFO L85 PathProgramCache]: Analyzing trace with hash 1800822623, now seen corresponding path program 1 times [2024-11-16 04:06:47,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:06:47,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308291943] [2024-11-16 04:06:47,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:06:47,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:06:48,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:06:48,287 INFO L134 CoverageAnalysis]: Checked inductivity of 681 backedges. 364 proven. 0 refuted. 0 times theorem prover too weak. 317 trivial. 0 not checked. [2024-11-16 04:06:48,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:06:48,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1308291943] [2024-11-16 04:06:48,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1308291943] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 04:06:48,288 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 04:06:48,288 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 04:06:48,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024123375] [2024-11-16 04:06:48,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:06:48,289 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 04:06:48,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:06:48,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 04:06:48,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 04:06:48,290 INFO L87 Difference]: Start difference. First operand 2332 states and 2568 transitions. Second operand has 3 states, 3 states have (on average 74.0) internal successors, (222), 3 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:06:48,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:06:48,690 INFO L93 Difference]: Finished difference Result 5020 states and 5574 transitions. [2024-11-16 04:06:48,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 04:06:48,690 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 74.0) internal successors, (222), 3 states have internal predecessors, (222), 0 states have call successors, (0), 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 432 [2024-11-16 04:06:48,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:06:48,697 INFO L225 Difference]: With dead ends: 5020 [2024-11-16 04:06:48,697 INFO L226 Difference]: Without dead ends: 2869 [2024-11-16 04:06:48,699 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 04:06:48,699 INFO L432 NwaCegarLoop]: 243 mSDtfsCounter, 110 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 410 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 250 SdHoareTripleChecker+Invalid, 465 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 410 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-16 04:06:48,700 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 250 Invalid, 465 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 410 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-16 04:06:48,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2869 states. [2024-11-16 04:06:48,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2869 to 2332. [2024-11-16 04:06:48,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2332 states, 2331 states have (on average 1.0965250965250966) internal successors, (2556), 2331 states have internal predecessors, (2556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:06:48,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2332 states to 2332 states and 2556 transitions. [2024-11-16 04:06:48,727 INFO L78 Accepts]: Start accepts. Automaton has 2332 states and 2556 transitions. Word has length 432 [2024-11-16 04:06:48,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:06:48,727 INFO L471 AbstractCegarLoop]: Abstraction has 2332 states and 2556 transitions. [2024-11-16 04:06:48,727 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 74.0) internal successors, (222), 3 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:06:48,728 INFO L276 IsEmpty]: Start isEmpty. Operand 2332 states and 2556 transitions. [2024-11-16 04:06:48,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 440 [2024-11-16 04:06:48,731 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:06:48,731 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 04:06:48,731 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-16 04:06:48,731 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:06:48,732 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:06:48,732 INFO L85 PathProgramCache]: Analyzing trace with hash 1159161570, now seen corresponding path program 1 times [2024-11-16 04:06:48,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:06:48,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352395726] [2024-11-16 04:06:48,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:06:48,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:06:48,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:06:48,973 INFO L134 CoverageAnalysis]: Checked inductivity of 681 backedges. 364 proven. 0 refuted. 0 times theorem prover too weak. 317 trivial. 0 not checked. [2024-11-16 04:06:48,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:06:48,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352395726] [2024-11-16 04:06:48,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [352395726] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 04:06:48,973 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 04:06:48,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 04:06:48,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915070471] [2024-11-16 04:06:48,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:06:48,974 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 04:06:48,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:06:48,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 04:06:48,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 04:06:48,975 INFO L87 Difference]: Start difference. First operand 2332 states and 2556 transitions. Second operand has 3 states, 3 states have (on average 76.33333333333333) internal successors, (229), 3 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:06:49,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:06:49,361 INFO L93 Difference]: Finished difference Result 5020 states and 5564 transitions. [2024-11-16 04:06:49,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 04:06:49,362 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 76.33333333333333) internal successors, (229), 3 states have internal predecessors, (229), 0 states have call successors, (0), 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 439 [2024-11-16 04:06:49,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:06:49,368 INFO L225 Difference]: With dead ends: 5020 [2024-11-16 04:06:49,369 INFO L226 Difference]: Without dead ends: 2869 [2024-11-16 04:06:49,371 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 04:06:49,371 INFO L432 NwaCegarLoop]: 218 mSDtfsCounter, 113 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 425 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 225 SdHoareTripleChecker+Invalid, 468 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 425 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-16 04:06:49,372 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 225 Invalid, 468 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 425 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-16 04:06:49,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2869 states. [2024-11-16 04:06:49,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2869 to 2690. [2024-11-16 04:06:49,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2690 states, 2689 states have (on average 1.0985496467088136) internal successors, (2954), 2689 states have internal predecessors, (2954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:06:49,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2690 states to 2690 states and 2954 transitions. [2024-11-16 04:06:49,404 INFO L78 Accepts]: Start accepts. Automaton has 2690 states and 2954 transitions. Word has length 439 [2024-11-16 04:06:49,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:06:49,419 INFO L471 AbstractCegarLoop]: Abstraction has 2690 states and 2954 transitions. [2024-11-16 04:06:49,420 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 76.33333333333333) internal successors, (229), 3 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:06:49,420 INFO L276 IsEmpty]: Start isEmpty. Operand 2690 states and 2954 transitions. [2024-11-16 04:06:49,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 481 [2024-11-16 04:06:49,426 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:06:49,426 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 04:06:49,427 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-16 04:06:49,427 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:06:49,427 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:06:49,428 INFO L85 PathProgramCache]: Analyzing trace with hash 1051428959, now seen corresponding path program 1 times [2024-11-16 04:06:49,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:06:49,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820858587] [2024-11-16 04:06:49,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:06:49,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:06:49,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:06:49,642 INFO L134 CoverageAnalysis]: Checked inductivity of 795 backedges. 478 proven. 0 refuted. 0 times theorem prover too weak. 317 trivial. 0 not checked. [2024-11-16 04:06:49,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:06:49,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820858587] [2024-11-16 04:06:49,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [820858587] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 04:06:49,643 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 04:06:49,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 04:06:49,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74617317] [2024-11-16 04:06:49,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:06:49,644 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 04:06:49,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:06:49,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 04:06:49,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 04:06:49,644 INFO L87 Difference]: Start difference. First operand 2690 states and 2954 transitions. Second operand has 3 states, 3 states have (on average 90.0) internal successors, (270), 3 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:06:50,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:06:50,034 INFO L93 Difference]: Finished difference Result 6094 states and 6740 transitions. [2024-11-16 04:06:50,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 04:06:50,035 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 90.0) internal successors, (270), 3 states have internal predecessors, (270), 0 states have call successors, (0), 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 480 [2024-11-16 04:06:50,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:06:50,043 INFO L225 Difference]: With dead ends: 6094 [2024-11-16 04:06:50,043 INFO L226 Difference]: Without dead ends: 3585 [2024-11-16 04:06:50,045 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 04:06:50,046 INFO L432 NwaCegarLoop]: 49 mSDtfsCounter, 75 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 423 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 478 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 423 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-16 04:06:50,046 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 53 Invalid, 478 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 423 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-16 04:06:50,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3585 states. [2024-11-16 04:06:50,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3585 to 3585. [2024-11-16 04:06:50,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3585 states, 3584 states have (on average 1.0915178571428572) internal successors, (3912), 3584 states have internal predecessors, (3912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:06:50,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3585 states to 3585 states and 3912 transitions. [2024-11-16 04:06:50,082 INFO L78 Accepts]: Start accepts. Automaton has 3585 states and 3912 transitions. Word has length 480 [2024-11-16 04:06:50,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:06:50,083 INFO L471 AbstractCegarLoop]: Abstraction has 3585 states and 3912 transitions. [2024-11-16 04:06:50,083 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 90.0) internal successors, (270), 3 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:06:50,083 INFO L276 IsEmpty]: Start isEmpty. Operand 3585 states and 3912 transitions. [2024-11-16 04:06:50,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 518 [2024-11-16 04:06:50,098 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:06:50,099 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 04:06:50,099 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-16 04:06:50,099 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:06:50,100 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:06:50,100 INFO L85 PathProgramCache]: Analyzing trace with hash 1371600256, now seen corresponding path program 1 times [2024-11-16 04:06:50,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:06:50,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168940432] [2024-11-16 04:06:50,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:06:50,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:06:50,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:06:50,482 INFO L134 CoverageAnalysis]: Checked inductivity of 1023 backedges. 706 proven. 0 refuted. 0 times theorem prover too weak. 317 trivial. 0 not checked. [2024-11-16 04:06:50,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:06:50,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168940432] [2024-11-16 04:06:50,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [168940432] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 04:06:50,482 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 04:06:50,483 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-16 04:06:50,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652315005] [2024-11-16 04:06:50,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:06:50,483 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 04:06:50,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:06:50,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 04:06:50,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-16 04:06:50,484 INFO L87 Difference]: Start difference. First operand 3585 states and 3912 transitions. Second operand has 4 states, 4 states have (on average 76.75) internal successors, (307), 4 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:06:51,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:06:51,044 INFO L93 Difference]: Finished difference Result 7347 states and 8026 transitions. [2024-11-16 04:06:51,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-16 04:06:51,044 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 76.75) internal successors, (307), 4 states have internal predecessors, (307), 0 states have call successors, (0), 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 517 [2024-11-16 04:06:51,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:06:51,053 INFO L225 Difference]: With dead ends: 7347 [2024-11-16 04:06:51,053 INFO L226 Difference]: Without dead ends: 3943 [2024-11-16 04:06:51,056 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-16 04:06:51,056 INFO L432 NwaCegarLoop]: 63 mSDtfsCounter, 216 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 808 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 216 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 851 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 808 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-16 04:06:51,057 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [216 Valid, 74 Invalid, 851 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 808 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-16 04:06:51,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3943 states. [2024-11-16 04:06:51,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3943 to 3764. [2024-11-16 04:06:51,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3764 states, 3763 states have (on average 1.085835769332979) internal successors, (4086), 3763 states have internal predecessors, (4086), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:06:51,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3764 states to 3764 states and 4086 transitions. [2024-11-16 04:06:51,094 INFO L78 Accepts]: Start accepts. Automaton has 3764 states and 4086 transitions. Word has length 517 [2024-11-16 04:06:51,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:06:51,095 INFO L471 AbstractCegarLoop]: Abstraction has 3764 states and 4086 transitions. [2024-11-16 04:06:51,095 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 76.75) internal successors, (307), 4 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:06:51,095 INFO L276 IsEmpty]: Start isEmpty. Operand 3764 states and 4086 transitions. [2024-11-16 04:06:51,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 596 [2024-11-16 04:06:51,098 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:06:51,099 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 04:06:51,099 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-16 04:06:51,099 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:06:51,099 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:06:51,100 INFO L85 PathProgramCache]: Analyzing trace with hash -1903623715, now seen corresponding path program 1 times [2024-11-16 04:06:51,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:06:51,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71881082] [2024-11-16 04:06:51,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:06:51,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:06:51,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:06:51,440 INFO L134 CoverageAnalysis]: Checked inductivity of 1116 backedges. 473 proven. 0 refuted. 0 times theorem prover too weak. 643 trivial. 0 not checked. [2024-11-16 04:06:51,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:06:51,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [71881082] [2024-11-16 04:06:51,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [71881082] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 04:06:51,440 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 04:06:51,440 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 04:06:51,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354388457] [2024-11-16 04:06:51,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:06:51,441 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 04:06:51,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:06:51,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 04:06:51,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 04:06:51,442 INFO L87 Difference]: Start difference. First operand 3764 states and 4086 transitions. Second operand has 3 states, 3 states have (on average 90.66666666666667) internal successors, (272), 3 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:06:51,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:06:51,815 INFO L93 Difference]: Finished difference Result 7705 states and 8429 transitions. [2024-11-16 04:06:51,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 04:06:51,816 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 90.66666666666667) internal successors, (272), 3 states have internal predecessors, (272), 0 states have call successors, (0), 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 595 [2024-11-16 04:06:51,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:06:51,825 INFO L225 Difference]: With dead ends: 7705 [2024-11-16 04:06:51,825 INFO L226 Difference]: Without dead ends: 4122 [2024-11-16 04:06:51,828 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 04:06:51,828 INFO L432 NwaCegarLoop]: 225 mSDtfsCounter, 110 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 423 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 232 SdHoareTripleChecker+Invalid, 469 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 423 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-16 04:06:51,829 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 232 Invalid, 469 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 423 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-16 04:06:51,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4122 states. [2024-11-16 04:06:51,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4122 to 4122. [2024-11-16 04:06:51,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4122 states, 4121 states have (on average 1.0805629701528756) internal successors, (4453), 4121 states have internal predecessors, (4453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:06:51,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4122 states to 4122 states and 4453 transitions. [2024-11-16 04:06:51,885 INFO L78 Accepts]: Start accepts. Automaton has 4122 states and 4453 transitions. Word has length 595 [2024-11-16 04:06:51,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:06:51,886 INFO L471 AbstractCegarLoop]: Abstraction has 4122 states and 4453 transitions. [2024-11-16 04:06:51,886 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 90.66666666666667) internal successors, (272), 3 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:06:51,886 INFO L276 IsEmpty]: Start isEmpty. Operand 4122 states and 4453 transitions. [2024-11-16 04:06:51,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 637 [2024-11-16 04:06:51,892 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:06:51,892 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 04:06:51,892 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-16 04:06:51,893 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:06:51,893 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:06:51,893 INFO L85 PathProgramCache]: Analyzing trace with hash -1433779260, now seen corresponding path program 1 times [2024-11-16 04:06:51,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:06:51,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1817318604] [2024-11-16 04:06:51,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:06:51,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:06:51,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:06:52,265 INFO L134 CoverageAnalysis]: Checked inductivity of 1271 backedges. 843 proven. 111 refuted. 0 times theorem prover too weak. 317 trivial. 0 not checked. [2024-11-16 04:06:52,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:06:52,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1817318604] [2024-11-16 04:06:52,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1817318604] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 04:06:52,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2138440099] [2024-11-16 04:06:52,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:06:52,266 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 04:06:52,266 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 04:06:52,268 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 04:06:52,279 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-16 04:06:52,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:06:52,454 INFO L255 TraceCheckSpWp]: Trace formula consists of 795 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-16 04:06:52,473 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 04:06:52,576 INFO L134 CoverageAnalysis]: Checked inductivity of 1271 backedges. 194 proven. 0 refuted. 0 times theorem prover too weak. 1077 trivial. 0 not checked. [2024-11-16 04:06:52,576 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 04:06:52,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2138440099] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 04:06:52,576 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 04:06:52,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2024-11-16 04:06:52,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686612276] [2024-11-16 04:06:52,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:06:52,577 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 04:06:52,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:06:52,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 04:06:52,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-16 04:06:52,578 INFO L87 Difference]: Start difference. First operand 4122 states and 4453 transitions. Second operand has 3 states, 3 states have (on average 67.66666666666667) internal successors, (203), 3 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:06:52,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:06:52,959 INFO L93 Difference]: Finished difference Result 9674 states and 10441 transitions. [2024-11-16 04:06:52,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 04:06:52,960 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 67.66666666666667) internal successors, (203), 3 states have internal predecessors, (203), 0 states have call successors, (0), 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 636 [2024-11-16 04:06:52,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:06:52,968 INFO L225 Difference]: With dead ends: 9674 [2024-11-16 04:06:52,968 INFO L226 Difference]: Without dead ends: 4838 [2024-11-16 04:06:52,971 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 639 GetRequests, 636 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-16 04:06:52,972 INFO L432 NwaCegarLoop]: 239 mSDtfsCounter, 141 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 399 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 SdHoareTripleChecker+Valid, 246 SdHoareTripleChecker+Invalid, 434 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 399 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-16 04:06:52,972 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [141 Valid, 246 Invalid, 434 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 399 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-16 04:06:52,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4838 states. [2024-11-16 04:06:53,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4838 to 4122. [2024-11-16 04:06:53,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4122 states, 4121 states have (on average 1.0735258432419317) internal successors, (4424), 4121 states have internal predecessors, (4424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:06:53,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4122 states to 4122 states and 4424 transitions. [2024-11-16 04:06:53,013 INFO L78 Accepts]: Start accepts. Automaton has 4122 states and 4424 transitions. Word has length 636 [2024-11-16 04:06:53,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:06:53,013 INFO L471 AbstractCegarLoop]: Abstraction has 4122 states and 4424 transitions. [2024-11-16 04:06:53,014 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 67.66666666666667) internal successors, (203), 3 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:06:53,014 INFO L276 IsEmpty]: Start isEmpty. Operand 4122 states and 4424 transitions. [2024-11-16 04:06:53,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 729 [2024-11-16 04:06:53,019 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:06:53,020 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 04:06:53,037 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-16 04:06:53,221 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-16 04:06:53,221 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:06:53,222 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:06:53,222 INFO L85 PathProgramCache]: Analyzing trace with hash -159038049, now seen corresponding path program 1 times [2024-11-16 04:06:53,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:06:53,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782123146] [2024-11-16 04:06:53,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:06:53,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:06:53,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:06:53,539 INFO L134 CoverageAnalysis]: Checked inductivity of 1769 backedges. 1302 proven. 111 refuted. 0 times theorem prover too weak. 356 trivial. 0 not checked. [2024-11-16 04:06:53,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:06:53,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782123146] [2024-11-16 04:06:53,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [782123146] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 04:06:53,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [938307093] [2024-11-16 04:06:53,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:06:53,540 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 04:06:53,540 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 04:06:53,542 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 04:06:53,542 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-16 04:06:53,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:06:53,697 INFO L255 TraceCheckSpWp]: Trace formula consists of 907 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-16 04:06:53,703 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 04:06:53,759 INFO L134 CoverageAnalysis]: Checked inductivity of 1769 backedges. 233 proven. 0 refuted. 0 times theorem prover too weak. 1536 trivial. 0 not checked. [2024-11-16 04:06:53,759 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 04:06:53,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [938307093] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 04:06:53,760 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 04:06:53,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2024-11-16 04:06:53,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730959638] [2024-11-16 04:06:53,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:06:53,760 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 04:06:53,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:06:53,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 04:06:53,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-16 04:06:53,761 INFO L87 Difference]: Start difference. First operand 4122 states and 4424 transitions. Second operand has 3 states, 3 states have (on average 68.0) internal successors, (204), 3 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:06:54,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:06:54,109 INFO L93 Difference]: Finished difference Result 8958 states and 9606 transitions. [2024-11-16 04:06:54,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 04:06:54,110 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 68.0) internal successors, (204), 3 states have internal predecessors, (204), 0 states have call successors, (0), 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 728 [2024-11-16 04:06:54,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:06:54,114 INFO L225 Difference]: With dead ends: 8958 [2024-11-16 04:06:54,115 INFO L226 Difference]: Without dead ends: 3764 [2024-11-16 04:06:54,118 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 731 GetRequests, 728 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-16 04:06:54,118 INFO L432 NwaCegarLoop]: 235 mSDtfsCounter, 141 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 381 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 SdHoareTripleChecker+Valid, 242 SdHoareTripleChecker+Invalid, 428 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 381 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-16 04:06:54,118 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [141 Valid, 242 Invalid, 428 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 381 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-16 04:06:54,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3764 states. [2024-11-16 04:06:54,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3764 to 3227. [2024-11-16 04:06:54,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3227 states, 3226 states have (on average 1.06478611283323) internal successors, (3435), 3226 states have internal predecessors, (3435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:06:54,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3227 states to 3227 states and 3435 transitions. [2024-11-16 04:06:54,144 INFO L78 Accepts]: Start accepts. Automaton has 3227 states and 3435 transitions. Word has length 728 [2024-11-16 04:06:54,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:06:54,144 INFO L471 AbstractCegarLoop]: Abstraction has 3227 states and 3435 transitions. [2024-11-16 04:06:54,145 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 68.0) internal successors, (204), 3 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:06:54,145 INFO L276 IsEmpty]: Start isEmpty. Operand 3227 states and 3435 transitions. [2024-11-16 04:06:54,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 826 [2024-11-16 04:06:54,149 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:06:54,150 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 04:06:54,163 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-16 04:06:54,350 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,SelfDestructingSolverStorable14 [2024-11-16 04:06:54,351 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:06:54,351 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:06:54,351 INFO L85 PathProgramCache]: Analyzing trace with hash 1629911871, now seen corresponding path program 1 times [2024-11-16 04:06:54,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:06:54,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580685624] [2024-11-16 04:06:54,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:06:54,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:06:54,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:06:54,737 INFO L134 CoverageAnalysis]: Checked inductivity of 1932 backedges. 1420 proven. 156 refuted. 0 times theorem prover too weak. 356 trivial. 0 not checked. [2024-11-16 04:06:54,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:06:54,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580685624] [2024-11-16 04:06:54,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1580685624] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 04:06:54,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [577423199] [2024-11-16 04:06:54,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:06:54,738 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 04:06:54,739 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 04:06:54,741 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 04:06:54,742 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-16 04:06:54,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:06:54,928 INFO L255 TraceCheckSpWp]: Trace formula consists of 1006 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-16 04:06:54,934 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 04:06:55,097 INFO L134 CoverageAnalysis]: Checked inductivity of 1932 backedges. 768 proven. 0 refuted. 0 times theorem prover too weak. 1164 trivial. 0 not checked. [2024-11-16 04:06:55,098 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 04:06:55,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [577423199] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 04:06:55,098 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 04:06:55,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2024-11-16 04:06:55,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752034255] [2024-11-16 04:06:55,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:06:55,099 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 04:06:55,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:06:55,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 04:06:55,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-16 04:06:55,100 INFO L87 Difference]: Start difference. First operand 3227 states and 3435 transitions. Second operand has 3 states, 3 states have (on average 103.0) internal successors, (309), 3 states have internal predecessors, (309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:06:55,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:06:55,423 INFO L93 Difference]: Finished difference Result 6270 states and 6686 transitions. [2024-11-16 04:06:55,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 04:06:55,424 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 103.0) internal successors, (309), 3 states have internal predecessors, (309), 0 states have call successors, (0), 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 825 [2024-11-16 04:06:55,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:06:55,425 INFO L225 Difference]: With dead ends: 6270 [2024-11-16 04:06:55,425 INFO L226 Difference]: Without dead ends: 0 [2024-11-16 04:06:55,428 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 828 GetRequests, 825 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-16 04:06:55,429 INFO L432 NwaCegarLoop]: 207 mSDtfsCounter, 66 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 411 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 212 SdHoareTripleChecker+Invalid, 427 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 411 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-16 04:06:55,429 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 212 Invalid, 427 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 411 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-16 04:06:55,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-16 04:06:55,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-16 04:06:55,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:06:55,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-16 04:06:55,430 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 825 [2024-11-16 04:06:55,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:06:55,430 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-16 04:06:55,430 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 103.0) internal successors, (309), 3 states have internal predecessors, (309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:06:55,430 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-16 04:06:55,430 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-16 04:06:55,432 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-16 04:06:55,446 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-16 04:06:55,633 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 04:06:55,636 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 04:06:55,638 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-11-16 04:06:55,837 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-16 04:06:55,845 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.11 04:06:55 BoogieIcfgContainer [2024-11-16 04:06:55,846 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-16 04:06:55,846 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-16 04:06:55,846 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-16 04:06:55,846 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-16 04:06:55,846 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 04:06:41" (3/4) ... [2024-11-16 04:06:55,848 INFO L143 WitnessPrinter]: Generating witness for correct program [2024-11-16 04:06:55,863 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2024-11-16 04:06:55,864 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2024-11-16 04:06:55,865 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-11-16 04:06:55,865 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-16 04:06:55,988 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-16 04:06:55,988 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-11-16 04:06:55,988 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-16 04:06:55,989 INFO L158 Benchmark]: Toolchain (without parser) took 16665.13ms. Allocated memory was 167.8MB in the beginning and 576.7MB in the end (delta: 408.9MB). Free memory was 110.3MB in the beginning and 523.5MB in the end (delta: -413.2MB). Peak memory consumption was 331.1MB. Max. memory is 16.1GB. [2024-11-16 04:06:55,989 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 167.8MB. Free memory is still 130.8MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-16 04:06:55,989 INFO L158 Benchmark]: CACSL2BoogieTranslator took 461.46ms. Allocated memory is still 167.8MB. Free memory was 109.7MB in the beginning and 74.6MB in the end (delta: 35.0MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2024-11-16 04:06:55,990 INFO L158 Benchmark]: Boogie Procedure Inliner took 112.27ms. Allocated memory is still 167.8MB. Free memory was 74.6MB in the beginning and 132.8MB in the end (delta: -58.2MB). Peak memory consumption was 19.7MB. Max. memory is 16.1GB. [2024-11-16 04:06:55,990 INFO L158 Benchmark]: Boogie Preprocessor took 107.63ms. Allocated memory is still 167.8MB. Free memory was 132.8MB in the beginning and 121.2MB in the end (delta: 11.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-11-16 04:06:55,990 INFO L158 Benchmark]: IcfgBuilder took 1173.18ms. Allocated memory was 167.8MB in the beginning and 224.4MB in the end (delta: 56.6MB). Free memory was 121.2MB in the beginning and 133.3MB in the end (delta: -12.2MB). Peak memory consumption was 76.7MB. Max. memory is 16.1GB. [2024-11-16 04:06:55,990 INFO L158 Benchmark]: TraceAbstraction took 14662.19ms. Allocated memory was 224.4MB in the beginning and 576.7MB in the end (delta: 352.3MB). Free memory was 132.3MB in the beginning and 195.5MB in the end (delta: -63.2MB). Peak memory consumption was 289.1MB. Max. memory is 16.1GB. [2024-11-16 04:06:55,991 INFO L158 Benchmark]: Witness Printer took 142.49ms. Allocated memory is still 576.7MB. Free memory was 195.5MB in the beginning and 523.5MB in the end (delta: -328.1MB). Peak memory consumption was 4.4MB. Max. memory is 16.1GB. [2024-11-16 04:06:55,996 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 167.8MB. Free memory is still 130.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 461.46ms. Allocated memory is still 167.8MB. Free memory was 109.7MB in the beginning and 74.6MB in the end (delta: 35.0MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 112.27ms. Allocated memory is still 167.8MB. Free memory was 74.6MB in the beginning and 132.8MB in the end (delta: -58.2MB). Peak memory consumption was 19.7MB. Max. memory is 16.1GB. * Boogie Preprocessor took 107.63ms. Allocated memory is still 167.8MB. Free memory was 132.8MB in the beginning and 121.2MB in the end (delta: 11.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * IcfgBuilder took 1173.18ms. Allocated memory was 167.8MB in the beginning and 224.4MB in the end (delta: 56.6MB). Free memory was 121.2MB in the beginning and 133.3MB in the end (delta: -12.2MB). Peak memory consumption was 76.7MB. Max. memory is 16.1GB. * TraceAbstraction took 14662.19ms. Allocated memory was 224.4MB in the beginning and 576.7MB in the end (delta: 352.3MB). Free memory was 132.3MB in the beginning and 195.5MB in the end (delta: -63.2MB). Peak memory consumption was 289.1MB. Max. memory is 16.1GB. * Witness Printer took 142.49ms. Allocated memory is still 576.7MB. Free memory was 195.5MB in the beginning and 523.5MB in the end (delta: -328.1MB). Peak memory consumption was 4.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 134]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 248 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 14.4s, OverallIterations: 16, TraceHistogramMax: 7, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 7.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2351 SdHoareTripleChecker+Valid, 7.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2351 mSDsluCounter, 2336 SdHoareTripleChecker+Invalid, 5.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 130 mSDsCounter, 1006 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 8426 IncrementalHoareTripleChecker+Invalid, 9432 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1006 mSolverCounterUnsat, 2206 mSDtfsCounter, 8426 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2236 GetRequests, 2209 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=4122occurred in iteration=13, InterpolantAutomatonStates: 52, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.5s AutomataMinimizationTime, 16 MinimizatonAttempts, 2691 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 3.8s InterpolantComputationTime, 8314 NumberOfCodeBlocks, 8314 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 8295 ConstructedInterpolants, 0 QuantifiedInterpolants, 15625 SizeOfPredicates, 0 NumberOfNonLiveVariables, 2708 ConjunctsInSsa, 6 ConjunctsInUnsatCore, 19 InterpolantComputations, 16 PerfectInterpolantSequences, 14975/15353 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 890]: Location Invariant Derived location invariant: null RESULT: Ultimate proved your program to be correct! [2024-11-16 04:06:56,019 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE