./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem17_label31.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version fca748b1 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem17_label31.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 af3862af5b8a27b2989fe566f1104f15a4544b51e9167db28055ff534e84b220 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dd.update-z3-fca748b-m [2024-11-19 18:31:18,797 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-19 18:31:18,863 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-19 18:31:18,868 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-19 18:31:18,870 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-19 18:31:18,902 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-19 18:31:18,903 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-19 18:31:18,903 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-19 18:31:18,904 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-19 18:31:18,904 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-19 18:31:18,905 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-19 18:31:18,905 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-19 18:31:18,905 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-19 18:31:18,906 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-19 18:31:18,906 INFO L153 SettingsManager]: * Use SBE=true [2024-11-19 18:31:18,907 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-19 18:31:18,907 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-19 18:31:18,907 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-19 18:31:18,908 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-19 18:31:18,908 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-19 18:31:18,908 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-19 18:31:18,909 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-19 18:31:18,909 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-19 18:31:18,909 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-19 18:31:18,910 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-19 18:31:18,910 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-19 18:31:18,910 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-19 18:31:18,911 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-19 18:31:18,911 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-19 18:31:18,911 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-19 18:31:18,912 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-19 18:31:18,912 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-19 18:31:18,912 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 18:31:18,912 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-19 18:31:18,913 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-19 18:31:18,913 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-19 18:31:18,913 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-19 18:31:18,914 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-19 18:31:18,914 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-19 18:31:18,914 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-19 18:31:18,915 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-19 18:31:18,916 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-19 18:31:18,917 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> af3862af5b8a27b2989fe566f1104f15a4544b51e9167db28055ff534e84b220 [2024-11-19 18:31:19,159 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-19 18:31:19,183 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-19 18:31:19,187 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-19 18:31:19,188 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-19 18:31:19,189 INFO L274 PluginConnector]: CDTParser initialized [2024-11-19 18:31:19,190 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem17_label31.c [2024-11-19 18:31:20,598 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-19 18:31:20,979 INFO L384 CDTParser]: Found 1 translation units. [2024-11-19 18:31:20,980 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem17_label31.c [2024-11-19 18:31:21,009 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5fbb59e7f/f6974e2b344d438d9802597203ba2812/FLAG06b42300f [2024-11-19 18:31:21,161 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5fbb59e7f/f6974e2b344d438d9802597203ba2812 [2024-11-19 18:31:21,164 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-19 18:31:21,165 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-19 18:31:21,166 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-19 18:31:21,166 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-19 18:31:21,172 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-19 18:31:21,172 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 06:31:21" (1/1) ... [2024-11-19 18:31:21,173 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60fe713c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:31:21, skipping insertion in model container [2024-11-19 18:31:21,173 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 06:31:21" (1/1) ... [2024-11-19 18:31:21,249 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-19 18:31:21,469 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/Problem17_label31.c[1403,1416] [2024-11-19 18:31:22,124 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 18:31:22,135 INFO L200 MainTranslator]: Completed pre-run [2024-11-19 18:31:22,148 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/Problem17_label31.c[1403,1416] [2024-11-19 18:31:22,383 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 18:31:22,405 INFO L204 MainTranslator]: Completed translation [2024-11-19 18:31:22,406 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:31:22 WrapperNode [2024-11-19 18:31:22,406 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-19 18:31:22,407 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-19 18:31:22,407 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-19 18:31:22,408 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-19 18:31:22,451 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:31:22" (1/1) ... [2024-11-19 18:31:22,528 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:31:22" (1/1) ... [2024-11-19 18:31:22,779 INFO L138 Inliner]: procedures = 15, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 2613 [2024-11-19 18:31:22,779 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-19 18:31:22,781 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-19 18:31:22,781 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-19 18:31:22,781 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-19 18:31:22,792 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:31:22" (1/1) ... [2024-11-19 18:31:22,793 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:31:22" (1/1) ... [2024-11-19 18:31:22,836 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:31:22" (1/1) ... [2024-11-19 18:31:23,034 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]. [2024-11-19 18:31:23,034 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:31:22" (1/1) ... [2024-11-19 18:31:23,034 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:31:22" (1/1) ... [2024-11-19 18:31:23,124 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:31:22" (1/1) ... [2024-11-19 18:31:23,183 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:31:22" (1/1) ... [2024-11-19 18:31:23,218 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:31:22" (1/1) ... [2024-11-19 18:31:23,235 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:31:22" (1/1) ... [2024-11-19 18:31:23,266 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-19 18:31:23,267 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-19 18:31:23,268 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-19 18:31:23,268 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-19 18:31:23,269 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:31:22" (1/1) ... [2024-11-19 18:31:23,274 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 18:31:23,287 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 18:31:23,305 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) [2024-11-19 18:31:23,308 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 [2024-11-19 18:31:23,359 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-19 18:31:23,359 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-19 18:31:23,359 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-19 18:31:23,359 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-19 18:31:23,421 INFO L238 CfgBuilder]: Building ICFG [2024-11-19 18:31:23,423 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-19 18:31:26,725 INFO L? ?]: Removed 372 outVars from TransFormulas that were not future-live. [2024-11-19 18:31:26,725 INFO L287 CfgBuilder]: Performing block encoding [2024-11-19 18:31:26,757 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-19 18:31:26,760 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-19 18:31:26,762 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 06:31:26 BoogieIcfgContainer [2024-11-19 18:31:26,763 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-19 18:31:26,764 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-19 18:31:26,765 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-19 18:31:26,768 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-19 18:31:26,769 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 06:31:21" (1/3) ... [2024-11-19 18:31:26,769 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42026ebe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 06:31:26, skipping insertion in model container [2024-11-19 18:31:26,770 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:31:22" (2/3) ... [2024-11-19 18:31:26,770 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42026ebe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 06:31:26, skipping insertion in model container [2024-11-19 18:31:26,770 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 06:31:26" (3/3) ... [2024-11-19 18:31:26,772 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label31.c [2024-11-19 18:31:26,788 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-19 18:31:26,788 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-19 18:31:26,859 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 18:31:26,865 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;@3b8d7d03, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 18:31:26,866 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-19 18:31:26,872 INFO L276 IsEmpty]: Start isEmpty. Operand has 590 states, 588 states have (on average 1.8061224489795917) internal successors, (1062), 589 states have internal predecessors, (1062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:31:26,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-19 18:31:26,880 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:31:26,881 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 18:31:26,882 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:31:26,887 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:31:26,887 INFO L85 PathProgramCache]: Analyzing trace with hash 297966002, now seen corresponding path program 1 times [2024-11-19 18:31:26,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:31:26,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602783615] [2024-11-19 18:31:26,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:31:26,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:31:26,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:31:27,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 18:31:27,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:31:27,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602783615] [2024-11-19 18:31:27,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1602783615] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 18:31:27,120 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 18:31:27,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 18:31:27,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799838886] [2024-11-19 18:31:27,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 18:31:27,127 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 18:31:27,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:31:27,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 18:31:27,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 18:31:27,158 INFO L87 Difference]: Start difference. First operand has 590 states, 588 states have (on average 1.8061224489795917) internal successors, (1062), 589 states have internal predecessors, (1062), 0 states have call successors, (0), 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 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:31:29,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:31:29,435 INFO L93 Difference]: Finished difference Result 1644 states and 3029 transitions. [2024-11-19 18:31:29,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 18:31:29,438 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2024-11-19 18:31:29,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:31:29,466 INFO L225 Difference]: With dead ends: 1644 [2024-11-19 18:31:29,467 INFO L226 Difference]: Without dead ends: 977 [2024-11-19 18:31:29,473 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 [2024-11-19 18:31:29,476 INFO L432 NwaCegarLoop]: 425 mSDtfsCounter, 480 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 1470 mSolverCounterSat, 332 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 480 SdHoareTripleChecker+Valid, 503 SdHoareTripleChecker+Invalid, 1802 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 332 IncrementalHoareTripleChecker+Valid, 1470 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-11-19 18:31:29,477 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [480 Valid, 503 Invalid, 1802 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [332 Valid, 1470 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-11-19 18:31:29,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 977 states. [2024-11-19 18:31:29,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 977 to 971. [2024-11-19 18:31:29,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 971 states, 970 states have (on average 1.5536082474226804) internal successors, (1507), 970 states have internal predecessors, (1507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:31:29,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 971 states to 971 states and 1507 transitions. [2024-11-19 18:31:29,587 INFO L78 Accepts]: Start accepts. Automaton has 971 states and 1507 transitions. Word has length 8 [2024-11-19 18:31:29,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:31:29,588 INFO L471 AbstractCegarLoop]: Abstraction has 971 states and 1507 transitions. [2024-11-19 18:31:29,589 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:31:29,589 INFO L276 IsEmpty]: Start isEmpty. Operand 971 states and 1507 transitions. [2024-11-19 18:31:29,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-11-19 18:31:29,591 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:31:29,591 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 18:31:29,591 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-19 18:31:29,592 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:31:29,592 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:31:29,593 INFO L85 PathProgramCache]: Analyzing trace with hash -623083190, now seen corresponding path program 1 times [2024-11-19 18:31:29,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:31:29,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123213623] [2024-11-19 18:31:29,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:31:29,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:31:29,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:31:29,913 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 18:31:29,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:31:29,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123213623] [2024-11-19 18:31:29,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [123213623] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 18:31:29,915 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 18:31:29,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 18:31:29,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821061945] [2024-11-19 18:31:29,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 18:31:29,918 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 18:31:29,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:31:29,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 18:31:29,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 18:31:29,920 INFO L87 Difference]: Start difference. First operand 971 states and 1507 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 2 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:31:32,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:31:32,028 INFO L93 Difference]: Finished difference Result 2813 states and 4381 transitions. [2024-11-19 18:31:32,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 18:31:32,029 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 2 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2024-11-19 18:31:32,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:31:32,036 INFO L225 Difference]: With dead ends: 2813 [2024-11-19 18:31:32,036 INFO L226 Difference]: Without dead ends: 1844 [2024-11-19 18:31:32,038 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 [2024-11-19 18:31:32,040 INFO L432 NwaCegarLoop]: 506 mSDtfsCounter, 405 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 1381 mSolverCounterSat, 325 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 405 SdHoareTripleChecker+Valid, 579 SdHoareTripleChecker+Invalid, 1706 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 325 IncrementalHoareTripleChecker+Valid, 1381 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-11-19 18:31:32,040 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [405 Valid, 579 Invalid, 1706 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [325 Valid, 1381 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-11-19 18:31:32,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1844 states. [2024-11-19 18:31:32,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1844 to 1841. [2024-11-19 18:31:32,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1841 states, 1840 states have (on average 1.35) internal successors, (2484), 1840 states have internal predecessors, (2484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:31:32,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1841 states to 1841 states and 2484 transitions. [2024-11-19 18:31:32,078 INFO L78 Accepts]: Start accepts. Automaton has 1841 states and 2484 transitions. Word has length 75 [2024-11-19 18:31:32,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:31:32,079 INFO L471 AbstractCegarLoop]: Abstraction has 1841 states and 2484 transitions. [2024-11-19 18:31:32,079 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 2 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:31:32,080 INFO L276 IsEmpty]: Start isEmpty. Operand 1841 states and 2484 transitions. [2024-11-19 18:31:32,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-11-19 18:31:32,081 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:31:32,081 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 18:31:32,082 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-19 18:31:32,082 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:31:32,082 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:31:32,083 INFO L85 PathProgramCache]: Analyzing trace with hash 464036830, now seen corresponding path program 1 times [2024-11-19 18:31:32,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:31:32,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531229836] [2024-11-19 18:31:32,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:31:32,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:31:32,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:31:32,324 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 18:31:32,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:31:32,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531229836] [2024-11-19 18:31:32,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [531229836] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 18:31:32,328 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 18:31:32,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 18:31:32,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719971890] [2024-11-19 18:31:32,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 18:31:32,329 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 18:31:32,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:31:32,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 18:31:32,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-19 18:31:32,351 INFO L87 Difference]: Start difference. First operand 1841 states and 2484 transitions. Second operand has 4 states, 4 states have (on average 19.5) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:31:35,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:31:35,899 INFO L93 Difference]: Finished difference Result 5863 states and 8156 transitions. [2024-11-19 18:31:35,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 18:31:35,899 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2024-11-19 18:31:35,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:31:35,915 INFO L225 Difference]: With dead ends: 5863 [2024-11-19 18:31:35,915 INFO L226 Difference]: Without dead ends: 4024 [2024-11-19 18:31:35,920 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 [2024-11-19 18:31:35,923 INFO L432 NwaCegarLoop]: 304 mSDtfsCounter, 972 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 2906 mSolverCounterSat, 697 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 972 SdHoareTripleChecker+Valid, 437 SdHoareTripleChecker+Invalid, 3603 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 697 IncrementalHoareTripleChecker+Valid, 2906 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2024-11-19 18:31:35,924 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [972 Valid, 437 Invalid, 3603 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [697 Valid, 2906 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2024-11-19 18:31:35,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4024 states. [2024-11-19 18:31:36,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4024 to 4020. [2024-11-19 18:31:36,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4020 states, 4019 states have (on average 1.3262005473998506) internal successors, (5330), 4019 states have internal predecessors, (5330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:31:36,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4020 states to 4020 states and 5330 transitions. [2024-11-19 18:31:36,023 INFO L78 Accepts]: Start accepts. Automaton has 4020 states and 5330 transitions. Word has length 78 [2024-11-19 18:31:36,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:31:36,024 INFO L471 AbstractCegarLoop]: Abstraction has 4020 states and 5330 transitions. [2024-11-19 18:31:36,024 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:31:36,025 INFO L276 IsEmpty]: Start isEmpty. Operand 4020 states and 5330 transitions. [2024-11-19 18:31:36,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2024-11-19 18:31:36,027 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:31:36,027 INFO L215 NwaCegarLoop]: trace histogram [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, 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] [2024-11-19 18:31:36,027 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-19 18:31:36,027 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:31:36,028 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:31:36,028 INFO L85 PathProgramCache]: Analyzing trace with hash 476193059, now seen corresponding path program 1 times [2024-11-19 18:31:36,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:31:36,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078180161] [2024-11-19 18:31:36,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:31:36,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:31:36,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:31:36,258 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2024-11-19 18:31:36,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:31:36,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078180161] [2024-11-19 18:31:36,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1078180161] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 18:31:36,259 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 18:31:36,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 18:31:36,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230564664] [2024-11-19 18:31:36,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 18:31:36,259 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 18:31:36,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:31:36,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 18:31:36,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 18:31:36,260 INFO L87 Difference]: Start difference. First operand 4020 states and 5330 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 2 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:31:37,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:31:37,886 INFO L93 Difference]: Finished difference Result 10602 states and 14364 transitions. [2024-11-19 18:31:37,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 18:31:37,886 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 2 states have internal predecessors, (80), 0 states have call successors, (0), 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 143 [2024-11-19 18:31:37,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:31:37,910 INFO L225 Difference]: With dead ends: 10602 [2024-11-19 18:31:37,911 INFO L226 Difference]: Without dead ends: 6580 [2024-11-19 18:31:37,918 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 [2024-11-19 18:31:37,919 INFO L432 NwaCegarLoop]: 516 mSDtfsCounter, 386 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 1081 mSolverCounterSat, 548 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 386 SdHoareTripleChecker+Valid, 591 SdHoareTripleChecker+Invalid, 1629 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 548 IncrementalHoareTripleChecker+Valid, 1081 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-19 18:31:37,920 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [386 Valid, 591 Invalid, 1629 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [548 Valid, 1081 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-19 18:31:37,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6580 states. [2024-11-19 18:31:37,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6580 to 5305. [2024-11-19 18:31:38,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5305 states, 5304 states have (on average 1.2268099547511313) internal successors, (6507), 5304 states have internal predecessors, (6507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:31:38,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5305 states to 5305 states and 6507 transitions. [2024-11-19 18:31:38,013 INFO L78 Accepts]: Start accepts. Automaton has 5305 states and 6507 transitions. Word has length 143 [2024-11-19 18:31:38,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:31:38,013 INFO L471 AbstractCegarLoop]: Abstraction has 5305 states and 6507 transitions. [2024-11-19 18:31:38,014 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 2 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:31:38,014 INFO L276 IsEmpty]: Start isEmpty. Operand 5305 states and 6507 transitions. [2024-11-19 18:31:38,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2024-11-19 18:31:38,019 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:31:38,019 INFO L215 NwaCegarLoop]: trace histogram [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, 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] [2024-11-19 18:31:38,020 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-19 18:31:38,020 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:31:38,020 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:31:38,020 INFO L85 PathProgramCache]: Analyzing trace with hash -1155607585, now seen corresponding path program 1 times [2024-11-19 18:31:38,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:31:38,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594281929] [2024-11-19 18:31:38,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:31:38,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:31:38,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:31:38,480 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 75 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 18:31:38,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:31:38,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594281929] [2024-11-19 18:31:38,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1594281929] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 18:31:38,481 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 18:31:38,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-19 18:31:38,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212685906] [2024-11-19 18:31:38,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 18:31:38,482 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 18:31:38,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:31:38,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 18:31:38,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-19 18:31:38,483 INFO L87 Difference]: Start difference. First operand 5305 states and 6507 transitions. Second operand has 5 states, 5 states have (on average 31.2) internal successors, (156), 5 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:31:40,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:31:40,660 INFO L93 Difference]: Finished difference Result 13180 states and 16551 transitions. [2024-11-19 18:31:40,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 18:31:40,661 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.2) internal successors, (156), 5 states have internal predecessors, (156), 0 states have call successors, (0), 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 156 [2024-11-19 18:31:40,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:31:40,683 INFO L225 Difference]: With dead ends: 13180 [2024-11-19 18:31:40,683 INFO L226 Difference]: Without dead ends: 7877 [2024-11-19 18:31:40,691 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-19 18:31:40,692 INFO L432 NwaCegarLoop]: 757 mSDtfsCounter, 593 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 2425 mSolverCounterSat, 589 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 593 SdHoareTripleChecker+Valid, 917 SdHoareTripleChecker+Invalid, 3014 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 589 IncrementalHoareTripleChecker+Valid, 2425 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-11-19 18:31:40,692 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [593 Valid, 917 Invalid, 3014 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [589 Valid, 2425 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-11-19 18:31:40,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7877 states. [2024-11-19 18:31:40,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7877 to 7862. [2024-11-19 18:31:40,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7862 states, 7861 states have (on average 1.2101513802315227) internal successors, (9513), 7861 states have internal predecessors, (9513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:31:40,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7862 states to 7862 states and 9513 transitions. [2024-11-19 18:31:40,816 INFO L78 Accepts]: Start accepts. Automaton has 7862 states and 9513 transitions. Word has length 156 [2024-11-19 18:31:40,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:31:40,818 INFO L471 AbstractCegarLoop]: Abstraction has 7862 states and 9513 transitions. [2024-11-19 18:31:40,818 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.2) internal successors, (156), 5 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:31:40,818 INFO L276 IsEmpty]: Start isEmpty. Operand 7862 states and 9513 transitions. [2024-11-19 18:31:40,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2024-11-19 18:31:40,821 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:31:40,821 INFO L215 NwaCegarLoop]: trace histogram [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, 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] [2024-11-19 18:31:40,821 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-19 18:31:40,821 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:31:40,822 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:31:40,822 INFO L85 PathProgramCache]: Analyzing trace with hash 1429759075, now seen corresponding path program 1 times [2024-11-19 18:31:40,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:31:40,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087138130] [2024-11-19 18:31:40,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:31:40,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:31:40,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:31:41,118 INFO L134 CoverageAnalysis]: Checked inductivity of 232 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 215 trivial. 0 not checked. [2024-11-19 18:31:41,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:31:41,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087138130] [2024-11-19 18:31:41,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1087138130] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 18:31:41,120 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 18:31:41,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 18:31:41,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963798987] [2024-11-19 18:31:41,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 18:31:41,122 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 18:31:41,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:31:41,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 18:31:41,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 18:31:41,124 INFO L87 Difference]: Start difference. First operand 7862 states and 9513 transitions. Second operand has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:31:42,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:31:42,760 INFO L93 Difference]: Finished difference Result 19110 states and 23099 transitions. [2024-11-19 18:31:42,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 18:31:42,761 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 0 states have call successors, (0), 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 261 [2024-11-19 18:31:42,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:31:42,792 INFO L225 Difference]: With dead ends: 19110 [2024-11-19 18:31:42,792 INFO L226 Difference]: Without dead ends: 10400 [2024-11-19 18:31:42,803 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 [2024-11-19 18:31:42,807 INFO L432 NwaCegarLoop]: 881 mSDtfsCounter, 436 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 1275 mSolverCounterSat, 345 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 436 SdHoareTripleChecker+Valid, 952 SdHoareTripleChecker+Invalid, 1620 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 345 IncrementalHoareTripleChecker+Valid, 1275 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-19 18:31:42,807 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [436 Valid, 952 Invalid, 1620 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [345 Valid, 1275 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-19 18:31:42,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10400 states. [2024-11-19 18:31:42,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10400 to 7415. [2024-11-19 18:31:42,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7415 states, 7414 states have (on average 1.1657674669544105) internal successors, (8643), 7414 states have internal predecessors, (8643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:31:42,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7415 states to 7415 states and 8643 transitions. [2024-11-19 18:31:42,944 INFO L78 Accepts]: Start accepts. Automaton has 7415 states and 8643 transitions. Word has length 261 [2024-11-19 18:31:42,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:31:42,945 INFO L471 AbstractCegarLoop]: Abstraction has 7415 states and 8643 transitions. [2024-11-19 18:31:42,945 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:31:42,945 INFO L276 IsEmpty]: Start isEmpty. Operand 7415 states and 8643 transitions. [2024-11-19 18:31:42,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2024-11-19 18:31:42,950 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:31:42,950 INFO L215 NwaCegarLoop]: trace histogram [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, 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] [2024-11-19 18:31:42,950 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-19 18:31:42,950 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:31:42,951 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:31:42,951 INFO L85 PathProgramCache]: Analyzing trace with hash -1211264295, now seen corresponding path program 1 times [2024-11-19 18:31:42,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:31:42,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399023701] [2024-11-19 18:31:42,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:31:42,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:31:43,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:31:43,164 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 223 trivial. 0 not checked. [2024-11-19 18:31:43,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:31:43,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399023701] [2024-11-19 18:31:43,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1399023701] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 18:31:43,165 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 18:31:43,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 18:31:43,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972805672] [2024-11-19 18:31:43,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 18:31:43,166 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 18:31:43,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:31:43,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 18:31:43,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 18:31:43,167 INFO L87 Difference]: Start difference. First operand 7415 states and 8643 transitions. Second operand has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:31:44,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:31:44,931 INFO L93 Difference]: Finished difference Result 18651 states and 21996 transitions. [2024-11-19 18:31:44,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 18:31:44,932 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 0 states have call successors, (0), 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 265 [2024-11-19 18:31:44,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:31:44,956 INFO L225 Difference]: With dead ends: 18651 [2024-11-19 18:31:44,956 INFO L226 Difference]: Without dead ends: 11237 [2024-11-19 18:31:44,965 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 [2024-11-19 18:31:44,966 INFO L432 NwaCegarLoop]: 361 mSDtfsCounter, 452 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 1217 mSolverCounterSat, 278 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 452 SdHoareTripleChecker+Valid, 425 SdHoareTripleChecker+Invalid, 1495 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 278 IncrementalHoareTripleChecker+Valid, 1217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-19 18:31:44,966 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [452 Valid, 425 Invalid, 1495 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [278 Valid, 1217 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-19 18:31:44,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11237 states. [2024-11-19 18:31:45,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11237 to 8667. [2024-11-19 18:31:45,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8667 states, 8666 states have (on average 1.1520886222017077) internal successors, (9984), 8666 states have internal predecessors, (9984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:31:45,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8667 states to 8667 states and 9984 transitions. [2024-11-19 18:31:45,091 INFO L78 Accepts]: Start accepts. Automaton has 8667 states and 9984 transitions. Word has length 265 [2024-11-19 18:31:45,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:31:45,091 INFO L471 AbstractCegarLoop]: Abstraction has 8667 states and 9984 transitions. [2024-11-19 18:31:45,092 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:31:45,092 INFO L276 IsEmpty]: Start isEmpty. Operand 8667 states and 9984 transitions. [2024-11-19 18:31:45,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2024-11-19 18:31:45,095 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:31:45,096 INFO L215 NwaCegarLoop]: trace histogram [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, 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] [2024-11-19 18:31:45,096 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-19 18:31:45,096 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:31:45,096 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:31:45,097 INFO L85 PathProgramCache]: Analyzing trace with hash 579184571, now seen corresponding path program 1 times [2024-11-19 18:31:45,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:31:45,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397329390] [2024-11-19 18:31:45,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:31:45,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:31:45,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:31:45,330 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 248 trivial. 0 not checked. [2024-11-19 18:31:45,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:31:45,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397329390] [2024-11-19 18:31:45,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [397329390] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 18:31:45,331 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 18:31:45,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 18:31:45,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904119795] [2024-11-19 18:31:45,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 18:31:45,331 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 18:31:45,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:31:45,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 18:31:45,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 18:31:45,332 INFO L87 Difference]: Start difference. First operand 8667 states and 9984 transitions. Second operand has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:31:47,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:31:47,121 INFO L93 Difference]: Finished difference Result 22011 states and 25365 transitions. [2024-11-19 18:31:47,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 18:31:47,122 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 0 states have call successors, (0), 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 278 [2024-11-19 18:31:47,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:31:47,143 INFO L225 Difference]: With dead ends: 22011 [2024-11-19 18:31:47,143 INFO L226 Difference]: Without dead ends: 13346 [2024-11-19 18:31:47,150 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 [2024-11-19 18:31:47,150 INFO L432 NwaCegarLoop]: 340 mSDtfsCounter, 484 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 1261 mSolverCounterSat, 289 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 484 SdHoareTripleChecker+Valid, 396 SdHoareTripleChecker+Invalid, 1550 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 289 IncrementalHoareTripleChecker+Valid, 1261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-19 18:31:47,151 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [484 Valid, 396 Invalid, 1550 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [289 Valid, 1261 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-19 18:31:47,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13346 states. [2024-11-19 18:31:47,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13346 to 11642. [2024-11-19 18:31:47,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11642 states, 11641 states have (on average 1.1441456919508632) internal successors, (13319), 11641 states have internal predecessors, (13319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:31:47,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11642 states to 11642 states and 13319 transitions. [2024-11-19 18:31:47,271 INFO L78 Accepts]: Start accepts. Automaton has 11642 states and 13319 transitions. Word has length 278 [2024-11-19 18:31:47,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:31:47,272 INFO L471 AbstractCegarLoop]: Abstraction has 11642 states and 13319 transitions. [2024-11-19 18:31:47,272 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:31:47,272 INFO L276 IsEmpty]: Start isEmpty. Operand 11642 states and 13319 transitions. [2024-11-19 18:31:47,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2024-11-19 18:31:47,277 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:31:47,277 INFO L215 NwaCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 18:31:47,277 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-19 18:31:47,278 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:31:47,278 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:31:47,278 INFO L85 PathProgramCache]: Analyzing trace with hash -386597272, now seen corresponding path program 1 times [2024-11-19 18:31:47,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:31:47,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093933364] [2024-11-19 18:31:47,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:31:47,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:31:47,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:31:47,647 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 273 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-19 18:31:47,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:31:47,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093933364] [2024-11-19 18:31:47,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1093933364] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 18:31:47,648 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 18:31:47,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 18:31:47,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726413456] [2024-11-19 18:31:47,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 18:31:47,649 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 18:31:47,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:31:47,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 18:31:47,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 18:31:47,651 INFO L87 Difference]: Start difference. First operand 11642 states and 13319 transitions. Second operand has 3 states, 3 states have (on average 105.66666666666667) internal successors, (317), 3 states have internal predecessors, (317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:31:49,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:31:49,139 INFO L93 Difference]: Finished difference Result 28847 states and 33336 transitions. [2024-11-19 18:31:49,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 18:31:49,140 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 105.66666666666667) internal successors, (317), 3 states have internal predecessors, (317), 0 states have call successors, (0), 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 322 [2024-11-19 18:31:49,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:31:49,171 INFO L225 Difference]: With dead ends: 28847 [2024-11-19 18:31:49,172 INFO L226 Difference]: Without dead ends: 16782 [2024-11-19 18:31:49,187 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 [2024-11-19 18:31:49,188 INFO L432 NwaCegarLoop]: 841 mSDtfsCounter, 382 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 1290 mSolverCounterSat, 248 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 382 SdHoareTripleChecker+Valid, 915 SdHoareTripleChecker+Invalid, 1538 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 248 IncrementalHoareTripleChecker+Valid, 1290 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-19 18:31:49,188 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [382 Valid, 915 Invalid, 1538 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [248 Valid, 1290 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-19 18:31:49,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16782 states. [2024-11-19 18:31:49,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16782 to 16349. [2024-11-19 18:31:49,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16349 states, 16348 states have (on average 1.1292512845608025) internal successors, (18461), 16348 states have internal predecessors, (18461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:31:49,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16349 states to 16349 states and 18461 transitions. [2024-11-19 18:31:49,455 INFO L78 Accepts]: Start accepts. Automaton has 16349 states and 18461 transitions. Word has length 322 [2024-11-19 18:31:49,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:31:49,455 INFO L471 AbstractCegarLoop]: Abstraction has 16349 states and 18461 transitions. [2024-11-19 18:31:49,455 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 105.66666666666667) internal successors, (317), 3 states have internal predecessors, (317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:31:49,456 INFO L276 IsEmpty]: Start isEmpty. Operand 16349 states and 18461 transitions. [2024-11-19 18:31:49,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 330 [2024-11-19 18:31:49,460 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:31:49,462 INFO L215 NwaCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 18:31:49,462 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-19 18:31:49,462 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:31:49,462 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:31:49,463 INFO L85 PathProgramCache]: Analyzing trace with hash -1998283090, now seen corresponding path program 1 times [2024-11-19 18:31:49,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:31:49,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1408157227] [2024-11-19 18:31:49,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:31:49,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:31:49,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:31:49,811 INFO L134 CoverageAnalysis]: Checked inductivity of 286 backedges. 204 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2024-11-19 18:31:49,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:31:49,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1408157227] [2024-11-19 18:31:49,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1408157227] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 18:31:49,812 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 18:31:49,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 18:31:49,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27293328] [2024-11-19 18:31:49,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 18:31:49,813 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 18:31:49,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:31:49,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 18:31:49,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 18:31:49,817 INFO L87 Difference]: Start difference. First operand 16349 states and 18461 transitions. Second operand has 3 states, 3 states have (on average 82.66666666666667) internal successors, (248), 3 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:31:51,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:31:51,426 INFO L93 Difference]: Finished difference Result 39113 states and 44253 transitions. [2024-11-19 18:31:51,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 18:31:51,426 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 82.66666666666667) internal successors, (248), 3 states have internal predecessors, (248), 0 states have call successors, (0), 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 329 [2024-11-19 18:31:51,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:31:51,539 INFO L225 Difference]: With dead ends: 39113 [2024-11-19 18:31:51,539 INFO L226 Difference]: Without dead ends: 22333 [2024-11-19 18:31:51,551 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 [2024-11-19 18:31:51,552 INFO L432 NwaCegarLoop]: 715 mSDtfsCounter, 393 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 1309 mSolverCounterSat, 270 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 393 SdHoareTripleChecker+Valid, 771 SdHoareTripleChecker+Invalid, 1579 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 270 IncrementalHoareTripleChecker+Valid, 1309 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-19 18:31:51,552 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [393 Valid, 771 Invalid, 1579 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [270 Valid, 1309 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-19 18:31:51,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22333 states. [2024-11-19 18:31:51,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22333 to 19346. [2024-11-19 18:31:51,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19346 states, 19345 states have (on average 1.1327991729128974) internal successors, (21914), 19345 states have internal predecessors, (21914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:31:51,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19346 states to 19346 states and 21914 transitions. [2024-11-19 18:31:51,761 INFO L78 Accepts]: Start accepts. Automaton has 19346 states and 21914 transitions. Word has length 329 [2024-11-19 18:31:51,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:31:51,762 INFO L471 AbstractCegarLoop]: Abstraction has 19346 states and 21914 transitions. [2024-11-19 18:31:51,762 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 82.66666666666667) internal successors, (248), 3 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:31:51,762 INFO L276 IsEmpty]: Start isEmpty. Operand 19346 states and 21914 transitions. [2024-11-19 18:31:51,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 404 [2024-11-19 18:31:51,770 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:31:51,771 INFO L215 NwaCegarLoop]: trace histogram [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, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 18:31:51,772 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-19 18:31:51,772 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:31:51,772 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:31:51,772 INFO L85 PathProgramCache]: Analyzing trace with hash -1995698420, now seen corresponding path program 1 times [2024-11-19 18:31:51,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:31:51,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751384793] [2024-11-19 18:31:51,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:31:51,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:31:51,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:31:52,038 INFO L134 CoverageAnalysis]: Checked inductivity of 513 backedges. 284 proven. 0 refuted. 0 times theorem prover too weak. 229 trivial. 0 not checked. [2024-11-19 18:31:52,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:31:52,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751384793] [2024-11-19 18:31:52,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [751384793] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 18:31:52,038 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 18:31:52,039 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 18:31:52,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706237028] [2024-11-19 18:31:52,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 18:31:52,039 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 18:31:52,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:31:52,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 18:31:52,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 18:31:52,040 INFO L87 Difference]: Start difference. First operand 19346 states and 21914 transitions. Second operand has 3 states, 3 states have (on average 83.0) internal successors, (249), 3 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:31:53,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:31:53,578 INFO L93 Difference]: Finished difference Result 45075 states and 51541 transitions. [2024-11-19 18:31:53,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 18:31:53,579 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 83.0) internal successors, (249), 3 states have internal predecessors, (249), 0 states have call successors, (0), 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 403 [2024-11-19 18:31:53,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:31:53,617 INFO L225 Difference]: With dead ends: 45075 [2024-11-19 18:31:53,618 INFO L226 Difference]: Without dead ends: 25306 [2024-11-19 18:31:53,632 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 [2024-11-19 18:31:53,633 INFO L432 NwaCegarLoop]: 732 mSDtfsCounter, 341 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 1177 mSolverCounterSat, 270 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 341 SdHoareTripleChecker+Valid, 791 SdHoareTripleChecker+Invalid, 1447 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 270 IncrementalHoareTripleChecker+Valid, 1177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-19 18:31:53,634 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [341 Valid, 791 Invalid, 1447 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [270 Valid, 1177 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-19 18:31:53,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25306 states. [2024-11-19 18:31:53,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25306 to 19320. [2024-11-19 18:31:53,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19320 states, 19319 states have (on average 1.132512034784409) internal successors, (21879), 19319 states have internal predecessors, (21879), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:31:53,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19320 states to 19320 states and 21879 transitions. [2024-11-19 18:31:53,957 INFO L78 Accepts]: Start accepts. Automaton has 19320 states and 21879 transitions. Word has length 403 [2024-11-19 18:31:53,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:31:53,959 INFO L471 AbstractCegarLoop]: Abstraction has 19320 states and 21879 transitions. [2024-11-19 18:31:53,960 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 83.0) internal successors, (249), 3 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:31:53,960 INFO L276 IsEmpty]: Start isEmpty. Operand 19320 states and 21879 transitions. [2024-11-19 18:31:53,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 405 [2024-11-19 18:31:53,967 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:31:53,968 INFO L215 NwaCegarLoop]: trace histogram [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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 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] [2024-11-19 18:31:53,968 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-19 18:31:53,969 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:31:53,969 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:31:53,969 INFO L85 PathProgramCache]: Analyzing trace with hash 2107972097, now seen corresponding path program 1 times [2024-11-19 18:31:53,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:31:53,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284854681] [2024-11-19 18:31:53,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:31:53,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:31:54,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:31:54,396 INFO L134 CoverageAnalysis]: Checked inductivity of 530 backedges. 443 proven. 0 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2024-11-19 18:31:54,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:31:54,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284854681] [2024-11-19 18:31:54,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [284854681] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 18:31:54,396 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 18:31:54,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 18:31:54,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427061713] [2024-11-19 18:31:54,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 18:31:54,397 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 18:31:54,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:31:54,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 18:31:54,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 18:31:54,398 INFO L87 Difference]: Start difference. First operand 19320 states and 21879 transitions. Second operand has 3 states, 3 states have (on average 106.33333333333333) internal successors, (319), 3 states have internal predecessors, (319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:31:55,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:31:56,000 INFO L93 Difference]: Finished difference Result 47156 states and 53418 transitions. [2024-11-19 18:31:56,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 18:31:56,000 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 106.33333333333333) internal successors, (319), 3 states have internal predecessors, (319), 0 states have call successors, (0), 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 404 [2024-11-19 18:31:56,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:31:56,028 INFO L225 Difference]: With dead ends: 47156 [2024-11-19 18:31:56,028 INFO L226 Difference]: Without dead ends: 26977 [2024-11-19 18:31:56,036 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 [2024-11-19 18:31:56,038 INFO L432 NwaCegarLoop]: 624 mSDtfsCounter, 446 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 1217 mSolverCounterSat, 326 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 446 SdHoareTripleChecker+Valid, 663 SdHoareTripleChecker+Invalid, 1543 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 326 IncrementalHoareTripleChecker+Valid, 1217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-19 18:31:56,038 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [446 Valid, 663 Invalid, 1543 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [326 Valid, 1217 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-19 18:31:56,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26977 states. [2024-11-19 18:31:56,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26977 to 24414. [2024-11-19 18:31:56,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24414 states, 24413 states have (on average 1.1234997747101954) internal successors, (27428), 24413 states have internal predecessors, (27428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:31:56,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24414 states to 24414 states and 27428 transitions. [2024-11-19 18:31:56,289 INFO L78 Accepts]: Start accepts. Automaton has 24414 states and 27428 transitions. Word has length 404 [2024-11-19 18:31:56,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:31:56,289 INFO L471 AbstractCegarLoop]: Abstraction has 24414 states and 27428 transitions. [2024-11-19 18:31:56,290 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 106.33333333333333) internal successors, (319), 3 states have internal predecessors, (319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:31:56,290 INFO L276 IsEmpty]: Start isEmpty. Operand 24414 states and 27428 transitions. [2024-11-19 18:31:56,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 409 [2024-11-19 18:31:56,296 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:31:56,297 INFO L215 NwaCegarLoop]: trace histogram [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, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 18:31:56,297 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-19 18:31:56,297 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:31:56,297 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:31:56,298 INFO L85 PathProgramCache]: Analyzing trace with hash -19573192, now seen corresponding path program 1 times [2024-11-19 18:31:56,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:31:56,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932734428] [2024-11-19 18:31:56,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:31:56,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:31:56,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:31:56,825 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 522 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-19 18:31:56,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:31:56,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1932734428] [2024-11-19 18:31:56,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1932734428] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 18:31:56,826 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 18:31:56,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 18:31:56,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717041464] [2024-11-19 18:31:56,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 18:31:56,827 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 18:31:56,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:31:56,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 18:31:56,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-19 18:31:56,829 INFO L87 Difference]: Start difference. First operand 24414 states and 27428 transitions. Second operand has 4 states, 4 states have (on average 100.75) internal successors, (403), 4 states have internal predecessors, (403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:31:59,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:31:59,130 INFO L93 Difference]: Finished difference Result 62487 states and 70116 transitions. [2024-11-19 18:31:59,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 18:31:59,130 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 100.75) internal successors, (403), 4 states have internal predecessors, (403), 0 states have call successors, (0), 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 408 [2024-11-19 18:31:59,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:31:59,164 INFO L225 Difference]: With dead ends: 62487 [2024-11-19 18:31:59,165 INFO L226 Difference]: Without dead ends: 38075 [2024-11-19 18:31:59,185 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 [2024-11-19 18:31:59,185 INFO L432 NwaCegarLoop]: 101 mSDtfsCounter, 826 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 2377 mSolverCounterSat, 485 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 826 SdHoareTripleChecker+Valid, 211 SdHoareTripleChecker+Invalid, 2862 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 485 IncrementalHoareTripleChecker+Valid, 2377 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-11-19 18:31:59,186 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [826 Valid, 211 Invalid, 2862 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [485 Valid, 2377 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-11-19 18:31:59,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38075 states. [2024-11-19 18:31:59,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38075 to 34226. [2024-11-19 18:31:59,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34226 states, 34225 states have (on average 1.1238860482103725) internal successors, (38465), 34225 states have internal predecessors, (38465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:31:59,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34226 states to 34226 states and 38465 transitions. [2024-11-19 18:31:59,562 INFO L78 Accepts]: Start accepts. Automaton has 34226 states and 38465 transitions. Word has length 408 [2024-11-19 18:31:59,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:31:59,562 INFO L471 AbstractCegarLoop]: Abstraction has 34226 states and 38465 transitions. [2024-11-19 18:31:59,563 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 100.75) internal successors, (403), 4 states have internal predecessors, (403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:31:59,563 INFO L276 IsEmpty]: Start isEmpty. Operand 34226 states and 38465 transitions. [2024-11-19 18:31:59,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 428 [2024-11-19 18:31:59,569 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:31:59,569 INFO L215 NwaCegarLoop]: trace histogram [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, 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, 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] [2024-11-19 18:31:59,570 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-19 18:31:59,570 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:31:59,570 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:31:59,570 INFO L85 PathProgramCache]: Analyzing trace with hash -1516530698, now seen corresponding path program 1 times [2024-11-19 18:31:59,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:31:59,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153846019] [2024-11-19 18:31:59,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:31:59,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:31:59,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:32:00,002 INFO L134 CoverageAnalysis]: Checked inductivity of 570 backedges. 482 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2024-11-19 18:32:00,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:32:00,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153846019] [2024-11-19 18:32:00,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1153846019] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 18:32:00,002 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 18:32:00,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 18:32:00,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422089357] [2024-11-19 18:32:00,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 18:32:00,003 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 18:32:00,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:32:00,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 18:32:00,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 18:32:00,005 INFO L87 Difference]: Start difference. First operand 34226 states and 38465 transitions. Second operand has 3 states, 3 states have (on average 113.66666666666667) internal successors, (341), 3 states have internal predecessors, (341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:32:01,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:32:01,567 INFO L93 Difference]: Finished difference Result 77395 states and 87186 transitions. [2024-11-19 18:32:01,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 18:32:01,567 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 113.66666666666667) internal successors, (341), 3 states have internal predecessors, (341), 0 states have call successors, (0), 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 427 [2024-11-19 18:32:01,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:32:01,609 INFO L225 Difference]: With dead ends: 77395 [2024-11-19 18:32:01,609 INFO L226 Difference]: Without dead ends: 43171 [2024-11-19 18:32:01,635 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 [2024-11-19 18:32:01,635 INFO L432 NwaCegarLoop]: 290 mSDtfsCounter, 393 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 1247 mSolverCounterSat, 210 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 393 SdHoareTripleChecker+Valid, 334 SdHoareTripleChecker+Invalid, 1457 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 210 IncrementalHoareTripleChecker+Valid, 1247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-19 18:32:01,636 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [393 Valid, 334 Invalid, 1457 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [210 Valid, 1247 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-19 18:32:01,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43171 states. [2024-11-19 18:32:02,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43171 to 42736. [2024-11-19 18:32:02,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42736 states, 42735 states have (on average 1.1186381186381187) internal successors, (47805), 42735 states have internal predecessors, (47805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:32:02,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42736 states to 42736 states and 47805 transitions. [2024-11-19 18:32:02,178 INFO L78 Accepts]: Start accepts. Automaton has 42736 states and 47805 transitions. Word has length 427 [2024-11-19 18:32:02,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:32:02,179 INFO L471 AbstractCegarLoop]: Abstraction has 42736 states and 47805 transitions. [2024-11-19 18:32:02,180 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 113.66666666666667) internal successors, (341), 3 states have internal predecessors, (341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:32:02,180 INFO L276 IsEmpty]: Start isEmpty. Operand 42736 states and 47805 transitions. [2024-11-19 18:32:02,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 429 [2024-11-19 18:32:02,189 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:32:02,189 INFO L215 NwaCegarLoop]: trace histogram [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, 4, 4, 4, 4, 4, 4, 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, 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] [2024-11-19 18:32:02,189 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-19 18:32:02,189 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:32:02,190 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:32:02,190 INFO L85 PathProgramCache]: Analyzing trace with hash 1883498630, now seen corresponding path program 1 times [2024-11-19 18:32:02,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:32:02,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265956663] [2024-11-19 18:32:02,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:32:02,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:32:02,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:32:02,776 INFO L134 CoverageAnalysis]: Checked inductivity of 548 backedges. 460 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2024-11-19 18:32:02,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:32:02,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265956663] [2024-11-19 18:32:02,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1265956663] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 18:32:02,777 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 18:32:02,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 18:32:02,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304199925] [2024-11-19 18:32:02,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 18:32:02,778 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 18:32:02,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:32:02,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 18:32:02,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 18:32:02,779 INFO L87 Difference]: Start difference. First operand 42736 states and 47805 transitions. Second operand has 3 states, 3 states have (on average 114.0) internal successors, (342), 3 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:32:04,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:32:04,521 INFO L93 Difference]: Finished difference Result 98672 states and 109854 transitions. [2024-11-19 18:32:04,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 18:32:04,522 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 114.0) internal successors, (342), 3 states have internal predecessors, (342), 0 states have call successors, (0), 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 428 [2024-11-19 18:32:04,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:32:04,575 INFO L225 Difference]: With dead ends: 98672 [2024-11-19 18:32:04,575 INFO L226 Difference]: Without dead ends: 55086 [2024-11-19 18:32:04,592 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 [2024-11-19 18:32:04,593 INFO L432 NwaCegarLoop]: 770 mSDtfsCounter, 373 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 1321 mSolverCounterSat, 165 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 373 SdHoareTripleChecker+Valid, 825 SdHoareTripleChecker+Invalid, 1486 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 165 IncrementalHoareTripleChecker+Valid, 1321 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-19 18:32:04,593 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [373 Valid, 825 Invalid, 1486 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [165 Valid, 1321 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-19 18:32:04,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55086 states. [2024-11-19 18:32:05,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55086 to 52941. [2024-11-19 18:32:05,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52941 states, 52940 states have (on average 1.1039478655081223) internal successors, (58443), 52940 states have internal predecessors, (58443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:32:05,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52941 states to 52941 states and 58443 transitions. [2024-11-19 18:32:05,294 INFO L78 Accepts]: Start accepts. Automaton has 52941 states and 58443 transitions. Word has length 428 [2024-11-19 18:32:05,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:32:05,295 INFO L471 AbstractCegarLoop]: Abstraction has 52941 states and 58443 transitions. [2024-11-19 18:32:05,295 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 114.0) internal successors, (342), 3 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:32:05,295 INFO L276 IsEmpty]: Start isEmpty. Operand 52941 states and 58443 transitions. [2024-11-19 18:32:05,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 452 [2024-11-19 18:32:05,300 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:32:05,301 INFO L215 NwaCegarLoop]: trace histogram [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, 4, 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, 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] [2024-11-19 18:32:05,301 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-19 18:32:05,301 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:32:05,301 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:32:05,301 INFO L85 PathProgramCache]: Analyzing trace with hash -114413348, now seen corresponding path program 1 times [2024-11-19 18:32:05,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:32:05,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023295064] [2024-11-19 18:32:05,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:32:05,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:32:05,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:32:05,897 INFO L134 CoverageAnalysis]: Checked inductivity of 533 backedges. 304 proven. 0 refuted. 0 times theorem prover too weak. 229 trivial. 0 not checked. [2024-11-19 18:32:05,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:32:05,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023295064] [2024-11-19 18:32:05,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2023295064] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 18:32:05,900 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 18:32:05,900 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 18:32:05,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718598004] [2024-11-19 18:32:05,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 18:32:05,901 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 18:32:05,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:32:05,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 18:32:05,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 18:32:05,902 INFO L87 Difference]: Start difference. First operand 52941 states and 58443 transitions. Second operand has 3 states, 3 states have (on average 99.0) internal successors, (297), 3 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:32:07,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:32:07,665 INFO L93 Difference]: Finished difference Result 122065 states and 134672 transitions. [2024-11-19 18:32:07,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 18:32:07,666 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 99.0) internal successors, (297), 3 states have internal predecessors, (297), 0 states have call successors, (0), 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 451 [2024-11-19 18:32:07,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:32:07,767 INFO L225 Difference]: With dead ends: 122065 [2024-11-19 18:32:07,767 INFO L226 Difference]: Without dead ends: 68698 [2024-11-19 18:32:07,917 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 [2024-11-19 18:32:07,919 INFO L432 NwaCegarLoop]: 772 mSDtfsCounter, 295 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 1333 mSolverCounterSat, 151 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 295 SdHoareTripleChecker+Valid, 828 SdHoareTripleChecker+Invalid, 1484 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 151 IncrementalHoareTripleChecker+Valid, 1333 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-19 18:32:07,919 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [295 Valid, 828 Invalid, 1484 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [151 Valid, 1333 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-19 18:32:07,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68698 states. [2024-11-19 18:32:08,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68698 to 67828. [2024-11-19 18:32:08,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67828 states, 67827 states have (on average 1.0920724785115072) internal successors, (74072), 67827 states have internal predecessors, (74072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:32:08,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67828 states to 67828 states and 74072 transitions. [2024-11-19 18:32:08,922 INFO L78 Accepts]: Start accepts. Automaton has 67828 states and 74072 transitions. Word has length 451 [2024-11-19 18:32:08,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:32:08,923 INFO L471 AbstractCegarLoop]: Abstraction has 67828 states and 74072 transitions. [2024-11-19 18:32:08,923 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 99.0) internal successors, (297), 3 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:32:08,923 INFO L276 IsEmpty]: Start isEmpty. Operand 67828 states and 74072 transitions. [2024-11-19 18:32:08,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 452 [2024-11-19 18:32:08,939 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:32:08,940 INFO L215 NwaCegarLoop]: trace histogram [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, 4, 4, 4, 4, 4, 4, 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, 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] [2024-11-19 18:32:08,941 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-19 18:32:08,941 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:32:08,944 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:32:08,945 INFO L85 PathProgramCache]: Analyzing trace with hash -422599618, now seen corresponding path program 1 times [2024-11-19 18:32:08,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:32:08,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112243482] [2024-11-19 18:32:08,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:32:08,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:32:09,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:32:09,412 INFO L134 CoverageAnalysis]: Checked inductivity of 556 backedges. 468 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2024-11-19 18:32:09,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:32:09,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112243482] [2024-11-19 18:32:09,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [112243482] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 18:32:09,412 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 18:32:09,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 18:32:09,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513732028] [2024-11-19 18:32:09,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 18:32:09,413 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 18:32:09,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:32:09,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 18:32:09,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 18:32:09,415 INFO L87 Difference]: Start difference. First operand 67828 states and 74072 transitions. Second operand has 3 states, 3 states have (on average 121.66666666666667) internal successors, (365), 3 states have internal predecessors, (365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:32:11,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:32:11,191 INFO L93 Difference]: Finished difference Result 143340 states and 156657 transitions. [2024-11-19 18:32:11,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 18:32:11,191 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 121.66666666666667) internal successors, (365), 3 states have internal predecessors, (365), 0 states have call successors, (0), 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 451 [2024-11-19 18:32:11,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:32:11,272 INFO L225 Difference]: With dead ends: 143340 [2024-11-19 18:32:11,272 INFO L226 Difference]: Without dead ends: 75085 [2024-11-19 18:32:11,303 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 [2024-11-19 18:32:11,304 INFO L432 NwaCegarLoop]: 196 mSDtfsCounter, 435 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 1256 mSolverCounterSat, 219 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 435 SdHoareTripleChecker+Valid, 249 SdHoareTripleChecker+Invalid, 1475 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 219 IncrementalHoareTripleChecker+Valid, 1256 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-19 18:32:11,304 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [435 Valid, 249 Invalid, 1475 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [219 Valid, 1256 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-19 18:32:11,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75085 states. [2024-11-19 18:32:12,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75085 to 72932. [2024-11-19 18:32:12,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72932 states, 72931 states have (on average 1.0914563080171669) internal successors, (79601), 72931 states have internal predecessors, (79601), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:32:12,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72932 states to 72932 states and 79601 transitions. [2024-11-19 18:32:12,426 INFO L78 Accepts]: Start accepts. Automaton has 72932 states and 79601 transitions. Word has length 451 [2024-11-19 18:32:12,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:32:12,426 INFO L471 AbstractCegarLoop]: Abstraction has 72932 states and 79601 transitions. [2024-11-19 18:32:12,427 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 121.66666666666667) internal successors, (365), 3 states have internal predecessors, (365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:32:12,427 INFO L276 IsEmpty]: Start isEmpty. Operand 72932 states and 79601 transitions. [2024-11-19 18:32:12,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 455 [2024-11-19 18:32:12,432 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:32:12,432 INFO L215 NwaCegarLoop]: trace histogram [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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 18:32:12,432 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-19 18:32:12,433 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:32:12,433 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:32:12,433 INFO L85 PathProgramCache]: Analyzing trace with hash 1138166129, now seen corresponding path program 1 times [2024-11-19 18:32:12,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:32:12,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130459759] [2024-11-19 18:32:12,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:32:12,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:32:12,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:32:13,122 INFO L134 CoverageAnalysis]: Checked inductivity of 329 backedges. 247 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2024-11-19 18:32:13,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:32:13,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1130459759] [2024-11-19 18:32:13,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1130459759] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 18:32:13,122 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 18:32:13,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 18:32:13,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222217018] [2024-11-19 18:32:13,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 18:32:13,123 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 18:32:13,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:32:13,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 18:32:13,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 18:32:13,124 INFO L87 Difference]: Start difference. First operand 72932 states and 79601 transitions. Second operand has 3 states, 3 states have (on average 124.33333333333333) internal successors, (373), 3 states have internal predecessors, (373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:32:14,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:32:14,950 INFO L93 Difference]: Finished difference Result 156511 states and 170702 transitions. [2024-11-19 18:32:14,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 18:32:14,951 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 124.33333333333333) internal successors, (373), 3 states have internal predecessors, (373), 0 states have call successors, (0), 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 454 [2024-11-19 18:32:14,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:32:15,051 INFO L225 Difference]: With dead ends: 156511 [2024-11-19 18:32:15,051 INFO L226 Difference]: Without dead ends: 83156 [2024-11-19 18:32:15,101 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 [2024-11-19 18:32:15,102 INFO L432 NwaCegarLoop]: 718 mSDtfsCounter, 247 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 1246 mSolverCounterSat, 130 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 247 SdHoareTripleChecker+Valid, 781 SdHoareTripleChecker+Invalid, 1376 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 130 IncrementalHoareTripleChecker+Valid, 1246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-19 18:32:15,102 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [247 Valid, 781 Invalid, 1376 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [130 Valid, 1246 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-19 18:32:15,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83156 states. [2024-11-19 18:32:15,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83156 to 78468. [2024-11-19 18:32:15,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78468 states, 78467 states have (on average 1.0862783080785554) internal successors, (85237), 78467 states have internal predecessors, (85237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:32:16,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78468 states to 78468 states and 85237 transitions. [2024-11-19 18:32:16,352 INFO L78 Accepts]: Start accepts. Automaton has 78468 states and 85237 transitions. Word has length 454 [2024-11-19 18:32:16,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:32:16,352 INFO L471 AbstractCegarLoop]: Abstraction has 78468 states and 85237 transitions. [2024-11-19 18:32:16,353 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 124.33333333333333) internal successors, (373), 3 states have internal predecessors, (373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:32:16,353 INFO L276 IsEmpty]: Start isEmpty. Operand 78468 states and 85237 transitions. [2024-11-19 18:32:16,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 500 [2024-11-19 18:32:16,375 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:32:16,375 INFO L215 NwaCegarLoop]: trace histogram [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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 18:32:16,375 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-19 18:32:16,375 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:32:16,376 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:32:16,376 INFO L85 PathProgramCache]: Analyzing trace with hash -875416535, now seen corresponding path program 1 times [2024-11-19 18:32:16,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:32:16,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103793277] [2024-11-19 18:32:16,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:32:16,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:32:16,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:32:16,775 INFO L134 CoverageAnalysis]: Checked inductivity of 329 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-11-19 18:32:16,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:32:16,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103793277] [2024-11-19 18:32:16,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1103793277] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 18:32:16,776 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 18:32:16,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 18:32:16,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639829767] [2024-11-19 18:32:16,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 18:32:16,777 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 18:32:16,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:32:16,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 18:32:16,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 18:32:16,779 INFO L87 Difference]: Start difference. First operand 78468 states and 85237 transitions. Second operand has 3 states, 3 states have (on average 90.33333333333333) internal successors, (271), 3 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:32:18,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:32:18,616 INFO L93 Difference]: Finished difference Result 180774 states and 196655 transitions. [2024-11-19 18:32:18,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 18:32:18,616 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 90.33333333333333) internal successors, (271), 3 states have internal predecessors, (271), 0 states have call successors, (0), 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 499 [2024-11-19 18:32:18,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:32:18,734 INFO L225 Difference]: With dead ends: 180774 [2024-11-19 18:32:18,734 INFO L226 Difference]: Without dead ends: 101870 [2024-11-19 18:32:18,785 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 [2024-11-19 18:32:18,785 INFO L432 NwaCegarLoop]: 664 mSDtfsCounter, 484 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 1268 mSolverCounterSat, 223 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 484 SdHoareTripleChecker+Valid, 704 SdHoareTripleChecker+Invalid, 1491 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 223 IncrementalHoareTripleChecker+Valid, 1268 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-19 18:32:18,785 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [484 Valid, 704 Invalid, 1491 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [223 Valid, 1268 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-19 18:32:18,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101870 states. [2024-11-19 18:32:19,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101870 to 96739. [2024-11-19 18:32:20,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96739 states, 96738 states have (on average 1.0824598399801526) internal successors, (104715), 96738 states have internal predecessors, (104715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:32:20,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96739 states to 96739 states and 104715 transitions. [2024-11-19 18:32:20,508 INFO L78 Accepts]: Start accepts. Automaton has 96739 states and 104715 transitions. Word has length 499 [2024-11-19 18:32:20,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:32:20,509 INFO L471 AbstractCegarLoop]: Abstraction has 96739 states and 104715 transitions. [2024-11-19 18:32:20,509 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 90.33333333333333) internal successors, (271), 3 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:32:20,509 INFO L276 IsEmpty]: Start isEmpty. Operand 96739 states and 104715 transitions. [2024-11-19 18:32:20,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 544 [2024-11-19 18:32:20,520 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:32:20,521 INFO L215 NwaCegarLoop]: trace histogram [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, 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, 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] [2024-11-19 18:32:20,521 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-19 18:32:20,521 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:32:20,521 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:32:20,521 INFO L85 PathProgramCache]: Analyzing trace with hash -1327725426, now seen corresponding path program 1 times [2024-11-19 18:32:20,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:32:20,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747313563] [2024-11-19 18:32:20,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:32:20,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:32:20,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:32:20,885 INFO L134 CoverageAnalysis]: Checked inductivity of 699 backedges. 394 proven. 0 refuted. 0 times theorem prover too weak. 305 trivial. 0 not checked. [2024-11-19 18:32:20,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:32:20,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747313563] [2024-11-19 18:32:20,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1747313563] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 18:32:20,885 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 18:32:20,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 18:32:20,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000467182] [2024-11-19 18:32:20,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 18:32:20,887 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 18:32:20,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:32:20,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 18:32:20,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 18:32:20,887 INFO L87 Difference]: Start difference. First operand 96739 states and 104715 transitions. Second operand has 3 states, 3 states have (on average 107.33333333333333) internal successors, (322), 3 states have internal predecessors, (322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:32:22,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:32:22,743 INFO L93 Difference]: Finished difference Result 209258 states and 226540 transitions. [2024-11-19 18:32:22,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 18:32:22,744 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 107.33333333333333) internal successors, (322), 3 states have internal predecessors, (322), 0 states have call successors, (0), 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 543 [2024-11-19 18:32:22,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:32:22,891 INFO L225 Difference]: With dead ends: 209258 [2024-11-19 18:32:22,891 INFO L226 Difference]: Without dead ends: 112521 [2024-11-19 18:32:22,950 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 [2024-11-19 18:32:22,951 INFO L432 NwaCegarLoop]: 247 mSDtfsCounter, 308 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 1286 mSolverCounterSat, 136 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 308 SdHoareTripleChecker+Valid, 294 SdHoareTripleChecker+Invalid, 1422 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 136 IncrementalHoareTripleChecker+Valid, 1286 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-19 18:32:22,951 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [308 Valid, 294 Invalid, 1422 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [136 Valid, 1286 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-19 18:32:23,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112521 states. [2024-11-19 18:32:24,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112521 to 109521. [2024-11-19 18:32:24,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109521 states, 109520 states have (on average 1.081300219138057) internal successors, (118424), 109520 states have internal predecessors, (118424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:32:24,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109521 states to 109521 states and 118424 transitions. [2024-11-19 18:32:24,662 INFO L78 Accepts]: Start accepts. Automaton has 109521 states and 118424 transitions. Word has length 543 [2024-11-19 18:32:24,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:32:24,663 INFO L471 AbstractCegarLoop]: Abstraction has 109521 states and 118424 transitions. [2024-11-19 18:32:24,663 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 107.33333333333333) internal successors, (322), 3 states have internal predecessors, (322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:32:24,663 INFO L276 IsEmpty]: Start isEmpty. Operand 109521 states and 118424 transitions. [2024-11-19 18:32:24,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 564 [2024-11-19 18:32:24,678 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:32:24,679 INFO L215 NwaCegarLoop]: trace histogram [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, 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, 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] [2024-11-19 18:32:24,679 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-19 18:32:24,679 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:32:24,679 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:32:24,680 INFO L85 PathProgramCache]: Analyzing trace with hash -1057515593, now seen corresponding path program 1 times [2024-11-19 18:32:24,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:32:24,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339680759] [2024-11-19 18:32:24,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:32:24,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:32:24,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:32:25,144 INFO L134 CoverageAnalysis]: Checked inductivity of 699 backedges. 394 proven. 0 refuted. 0 times theorem prover too weak. 305 trivial. 0 not checked. [2024-11-19 18:32:25,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:32:25,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339680759] [2024-11-19 18:32:25,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1339680759] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 18:32:25,145 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 18:32:25,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-19 18:32:25,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492254908] [2024-11-19 18:32:25,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 18:32:25,146 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 18:32:25,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:32:25,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 18:32:25,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-19 18:32:25,147 INFO L87 Difference]: Start difference. First operand 109521 states and 118424 transitions. Second operand has 5 states, 5 states have (on average 68.4) internal successors, (342), 5 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:32:28,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:32:28,655 INFO L93 Difference]: Finished difference Result 257793 states and 278713 transitions. [2024-11-19 18:32:28,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 18:32:28,656 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 68.4) internal successors, (342), 5 states have internal predecessors, (342), 0 states have call successors, (0), 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 563 [2024-11-19 18:32:28,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:32:29,250 INFO L225 Difference]: With dead ends: 257793 [2024-11-19 18:32:29,251 INFO L226 Difference]: Without dead ends: 147846 [2024-11-19 18:32:29,272 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-19 18:32:29,273 INFO L432 NwaCegarLoop]: 153 mSDtfsCounter, 1215 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 3336 mSolverCounterSat, 467 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1215 SdHoareTripleChecker+Valid, 252 SdHoareTripleChecker+Invalid, 3803 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 467 IncrementalHoareTripleChecker+Valid, 3336 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2024-11-19 18:32:29,273 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1215 Valid, 252 Invalid, 3803 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [467 Valid, 3336 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2024-11-19 18:32:29,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147846 states. [2024-11-19 18:32:30,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147846 to 128678. [2024-11-19 18:32:30,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128678 states, 128677 states have (on average 1.0749473487880508) internal successors, (138321), 128677 states have internal predecessors, (138321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:32:30,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128678 states to 128678 states and 138321 transitions. [2024-11-19 18:32:30,833 INFO L78 Accepts]: Start accepts. Automaton has 128678 states and 138321 transitions. Word has length 563 [2024-11-19 18:32:30,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:32:30,834 INFO L471 AbstractCegarLoop]: Abstraction has 128678 states and 138321 transitions. [2024-11-19 18:32:30,834 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 68.4) internal successors, (342), 5 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:32:30,834 INFO L276 IsEmpty]: Start isEmpty. Operand 128678 states and 138321 transitions. [2024-11-19 18:32:30,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 564 [2024-11-19 18:32:30,844 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:32:30,844 INFO L215 NwaCegarLoop]: trace histogram [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, 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, 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] [2024-11-19 18:32:30,845 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-19 18:32:30,845 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:32:30,845 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:32:30,845 INFO L85 PathProgramCache]: Analyzing trace with hash -1530751243, now seen corresponding path program 1 times [2024-11-19 18:32:30,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:32:30,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371011848] [2024-11-19 18:32:30,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:32:30,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:32:30,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:32:31,728 INFO L134 CoverageAnalysis]: Checked inductivity of 699 backedges. 394 proven. 0 refuted. 0 times theorem prover too weak. 305 trivial. 0 not checked. [2024-11-19 18:32:31,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:32:31,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371011848] [2024-11-19 18:32:31,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1371011848] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 18:32:31,728 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 18:32:31,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-19 18:32:31,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450158986] [2024-11-19 18:32:31,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 18:32:31,730 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 18:32:31,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:32:31,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 18:32:31,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-19 18:32:31,731 INFO L87 Difference]: Start difference. First operand 128678 states and 138321 transitions. Second operand has 5 states, 5 states have (on average 68.4) internal successors, (342), 5 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:32:35,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:32:35,458 INFO L93 Difference]: Finished difference Result 293133 states and 315248 transitions. [2024-11-19 18:32:35,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 18:32:35,459 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 68.4) internal successors, (342), 5 states have internal predecessors, (342), 0 states have call successors, (0), 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 563 [2024-11-19 18:32:35,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:32:35,657 INFO L225 Difference]: With dead ends: 293133 [2024-11-19 18:32:35,658 INFO L226 Difference]: Without dead ends: 163607 [2024-11-19 18:32:35,731 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-19 18:32:35,732 INFO L432 NwaCegarLoop]: 98 mSDtfsCounter, 1723 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 2716 mSolverCounterSat, 742 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1723 SdHoareTripleChecker+Valid, 171 SdHoareTripleChecker+Invalid, 3458 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 742 IncrementalHoareTripleChecker+Valid, 2716 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2024-11-19 18:32:35,732 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1723 Valid, 171 Invalid, 3458 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [742 Valid, 2716 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2024-11-19 18:32:35,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163607 states.