./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/Problem16_label30.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/Problem16_label30.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 12d23798e1ec2473ce2c19acb587b0594ab921b365483c260e8791dd4e57612e --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dd.update-z3-fca748b-m [2024-11-19 18:26:08,131 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-19 18:26:08,198 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-19 18:26:08,203 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-19 18:26:08,205 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-19 18:26:08,230 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-19 18:26:08,232 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-19 18:26:08,232 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-19 18:26:08,233 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-19 18:26:08,236 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-19 18:26:08,236 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-19 18:26:08,236 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-19 18:26:08,237 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-19 18:26:08,237 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-19 18:26:08,237 INFO L153 SettingsManager]: * Use SBE=true [2024-11-19 18:26:08,238 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-19 18:26:08,238 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-19 18:26:08,238 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-19 18:26:08,239 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-19 18:26:08,240 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-19 18:26:08,240 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-19 18:26:08,240 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-19 18:26:08,240 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-19 18:26:08,241 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-19 18:26:08,241 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-19 18:26:08,241 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-19 18:26:08,241 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-19 18:26:08,241 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-19 18:26:08,242 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-19 18:26:08,242 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-19 18:26:08,242 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-19 18:26:08,242 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-19 18:26:08,242 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 18:26:08,242 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-19 18:26:08,243 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-19 18:26:08,243 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-19 18:26:08,243 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-19 18:26:08,243 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-19 18:26:08,244 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-19 18:26:08,244 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-19 18:26:08,245 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-19 18:26:08,245 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-19 18:26:08,245 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 12d23798e1ec2473ce2c19acb587b0594ab921b365483c260e8791dd4e57612e [2024-11-19 18:26:08,465 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-19 18:26:08,484 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-19 18:26:08,487 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-19 18:26:08,489 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-19 18:26:08,489 INFO L274 PluginConnector]: CDTParser initialized [2024-11-19 18:26:08,490 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem16_label30.c [2024-11-19 18:26:09,721 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-19 18:26:10,008 INFO L384 CDTParser]: Found 1 translation units. [2024-11-19 18:26:10,009 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem16_label30.c [2024-11-19 18:26:10,031 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/db36101e3/fa5dbe28777845aeab3cfd4176181c8d/FLAGaf5658441 [2024-11-19 18:26:10,299 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/db36101e3/fa5dbe28777845aeab3cfd4176181c8d [2024-11-19 18:26:10,301 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-19 18:26:10,302 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-19 18:26:10,303 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-19 18:26:10,303 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-19 18:26:10,308 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-19 18:26:10,308 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 06:26:10" (1/1) ... [2024-11-19 18:26:10,309 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@392ed9d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:26:10, skipping insertion in model container [2024-11-19 18:26:10,310 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 06:26:10" (1/1) ... [2024-11-19 18:26:10,378 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-19 18:26:10,559 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/Problem16_label30.c[1812,1825] [2024-11-19 18:26:10,874 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 18:26:10,883 INFO L200 MainTranslator]: Completed pre-run [2024-11-19 18:26:10,893 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/Problem16_label30.c[1812,1825] [2024-11-19 18:26:11,028 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 18:26:11,044 INFO L204 MainTranslator]: Completed translation [2024-11-19 18:26:11,045 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:26:11 WrapperNode [2024-11-19 18:26:11,045 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-19 18:26:11,046 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-19 18:26:11,046 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-19 18:26:11,046 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-19 18:26:11,052 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:26:11" (1/1) ... [2024-11-19 18:26:11,082 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:26:11" (1/1) ... [2024-11-19 18:26:11,176 INFO L138 Inliner]: procedures = 15, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 1770 [2024-11-19 18:26:11,177 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-19 18:26:11,177 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-19 18:26:11,178 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-19 18:26:11,178 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-19 18:26:11,186 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:26:11" (1/1) ... [2024-11-19 18:26:11,187 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:26:11" (1/1) ... [2024-11-19 18:26:11,197 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:26:11" (1/1) ... [2024-11-19 18:26:11,273 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 18:26:11,274 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:26:11" (1/1) ... [2024-11-19 18:26:11,274 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:26:11" (1/1) ... [2024-11-19 18:26:11,320 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:26:11" (1/1) ... [2024-11-19 18:26:11,333 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:26:11" (1/1) ... [2024-11-19 18:26:11,372 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:26:11" (1/1) ... [2024-11-19 18:26:11,388 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:26:11" (1/1) ... [2024-11-19 18:26:11,410 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-19 18:26:11,411 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-19 18:26:11,411 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-19 18:26:11,411 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-19 18:26:11,412 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:26:11" (1/1) ... [2024-11-19 18:26:11,418 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 18:26:11,431 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 18:26:11,446 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 18:26:11,449 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 18:26:11,484 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-19 18:26:11,484 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-19 18:26:11,485 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-19 18:26:11,485 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-19 18:26:11,537 INFO L238 CfgBuilder]: Building ICFG [2024-11-19 18:26:11,539 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-19 18:26:13,053 INFO L? ?]: Removed 276 outVars from TransFormulas that were not future-live. [2024-11-19 18:26:13,053 INFO L287 CfgBuilder]: Performing block encoding [2024-11-19 18:26:13,080 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-19 18:26:13,081 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-19 18:26:13,081 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 06:26:13 BoogieIcfgContainer [2024-11-19 18:26:13,082 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-19 18:26:13,083 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-19 18:26:13,083 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-19 18:26:13,086 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-19 18:26:13,086 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 06:26:10" (1/3) ... [2024-11-19 18:26:13,087 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1cc3c427 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 06:26:13, skipping insertion in model container [2024-11-19 18:26:13,087 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:26:11" (2/3) ... [2024-11-19 18:26:13,087 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1cc3c427 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 06:26:13, skipping insertion in model container [2024-11-19 18:26:13,087 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 06:26:13" (3/3) ... [2024-11-19 18:26:13,088 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem16_label30.c [2024-11-19 18:26:13,103 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-19 18:26:13,103 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-19 18:26:13,177 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 18:26:13,185 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;@6a256fa5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 18:26:13,186 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-19 18:26:13,192 INFO L276 IsEmpty]: Start isEmpty. Operand has 396 states, 394 states have (on average 1.8350253807106598) internal successors, (723), 395 states have internal predecessors, (723), 0 states have call successors, (0), 0 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 18:26:13,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-19 18:26:13,198 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:26:13,199 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 18:26:13,199 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:26:13,203 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:26:13,204 INFO L85 PathProgramCache]: Analyzing trace with hash -884752143, now seen corresponding path program 1 times [2024-11-19 18:26:13,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:26:13,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774243127] [2024-11-19 18:26:13,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:26:13,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:26:13,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:26:13,411 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 18:26:13,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:26:13,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774243127] [2024-11-19 18:26:13,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1774243127] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 18:26:13,412 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 18:26:13,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 18:26:13,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397018193] [2024-11-19 18:26:13,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 18:26:13,419 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 18:26:13,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:26:13,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 18:26:13,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 18:26:13,442 INFO L87 Difference]: Start difference. First operand has 396 states, 394 states have (on average 1.8350253807106598) internal successors, (723), 395 states have internal predecessors, (723), 0 states have call successors, (0), 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 5.0) internal successors, (15), 2 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:26:14,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:26:14,767 INFO L93 Difference]: Finished difference Result 1122 states and 2103 transitions. [2024-11-19 18:26:14,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 18:26:14,769 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 2 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2024-11-19 18:26:14,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:26:14,780 INFO L225 Difference]: With dead ends: 1122 [2024-11-19 18:26:14,780 INFO L226 Difference]: Without dead ends: 662 [2024-11-19 18:26:14,783 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 18:26:14,786 INFO L432 NwaCegarLoop]: 215 mSDtfsCounter, 345 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 1054 mSolverCounterSat, 251 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 345 SdHoareTripleChecker+Valid, 223 SdHoareTripleChecker+Invalid, 1305 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 251 IncrementalHoareTripleChecker+Valid, 1054 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-19 18:26:14,787 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [345 Valid, 223 Invalid, 1305 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [251 Valid, 1054 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-19 18:26:14,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 662 states. [2024-11-19 18:26:14,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 662 to 662. [2024-11-19 18:26:14,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 662 states, 661 states have (on average 1.5824508320726172) internal successors, (1046), 661 states have internal predecessors, (1046), 0 states have call successors, (0), 0 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 18:26:14,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 662 states to 662 states and 1046 transitions. [2024-11-19 18:26:14,839 INFO L78 Accepts]: Start accepts. Automaton has 662 states and 1046 transitions. Word has length 15 [2024-11-19 18:26:14,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:26:14,839 INFO L471 AbstractCegarLoop]: Abstraction has 662 states and 1046 transitions. [2024-11-19 18:26:14,839 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 2 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:26:14,840 INFO L276 IsEmpty]: Start isEmpty. Operand 662 states and 1046 transitions. [2024-11-19 18:26:14,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2024-11-19 18:26:14,841 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:26:14,842 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-19 18:26:14,842 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-19 18:26:14,842 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:26:14,842 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:26:14,843 INFO L85 PathProgramCache]: Analyzing trace with hash -100302085, now seen corresponding path program 1 times [2024-11-19 18:26:14,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:26:14,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008260229] [2024-11-19 18:26:14,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:26:14,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:26:14,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:26:15,025 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 18:26:15,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:26:15,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008260229] [2024-11-19 18:26:15,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2008260229] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 18:26:15,026 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 18:26:15,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 18:26:15,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139563314] [2024-11-19 18:26:15,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 18:26:15,027 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 18:26:15,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:26:15,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 18:26:15,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 18:26:15,028 INFO L87 Difference]: Start difference. First operand 662 states and 1046 transitions. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 2 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:26:15,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:26:15,971 INFO L93 Difference]: Finished difference Result 1651 states and 2539 transitions. [2024-11-19 18:26:15,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 18:26:15,971 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 2 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2024-11-19 18:26:15,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:26:15,974 INFO L225 Difference]: With dead ends: 1651 [2024-11-19 18:26:15,975 INFO L226 Difference]: Without dead ends: 991 [2024-11-19 18:26:15,976 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 18:26:15,976 INFO L432 NwaCegarLoop]: 73 mSDtfsCounter, 338 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 882 mSolverCounterSat, 268 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 338 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 1150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 268 IncrementalHoareTripleChecker+Valid, 882 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-19 18:26:15,977 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [338 Valid, 77 Invalid, 1150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [268 Valid, 882 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-19 18:26:15,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 991 states. [2024-11-19 18:26:15,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 991 to 991. [2024-11-19 18:26:15,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 991 states, 990 states have (on average 1.3767676767676769) internal successors, (1363), 990 states have internal predecessors, (1363), 0 states have call successors, (0), 0 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 18:26:16,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 991 states to 991 states and 1363 transitions. [2024-11-19 18:26:16,001 INFO L78 Accepts]: Start accepts. Automaton has 991 states and 1363 transitions. Word has length 86 [2024-11-19 18:26:16,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:26:16,001 INFO L471 AbstractCegarLoop]: Abstraction has 991 states and 1363 transitions. [2024-11-19 18:26:16,002 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 2 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:26:16,002 INFO L276 IsEmpty]: Start isEmpty. Operand 991 states and 1363 transitions. [2024-11-19 18:26:16,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2024-11-19 18:26:16,003 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:26:16,003 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-19 18:26:16,004 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-19 18:26:16,004 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:26:16,004 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:26:16,004 INFO L85 PathProgramCache]: Analyzing trace with hash -397740096, now seen corresponding path program 1 times [2024-11-19 18:26:16,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:26:16,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170212084] [2024-11-19 18:26:16,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:26:16,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:26:16,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:26:16,109 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 18:26:16,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:26:16,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1170212084] [2024-11-19 18:26:16,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1170212084] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 18:26:16,110 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 18:26:16,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 18:26:16,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106571775] [2024-11-19 18:26:16,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 18:26:16,111 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 18:26:16,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:26:16,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 18:26:16,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 18:26:16,112 INFO L87 Difference]: Start difference. First operand 991 states and 1363 transitions. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 2 states have internal predecessors, (87), 0 states have call successors, (0), 0 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 18:26:17,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:26:17,210 INFO L93 Difference]: Finished difference Result 2967 states and 4084 transitions. [2024-11-19 18:26:17,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 18:26:17,211 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 2 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 87 [2024-11-19 18:26:17,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:26:17,218 INFO L225 Difference]: With dead ends: 2967 [2024-11-19 18:26:17,218 INFO L226 Difference]: Without dead ends: 1978 [2024-11-19 18:26:17,220 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 18:26:17,223 INFO L432 NwaCegarLoop]: 206 mSDtfsCounter, 287 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 806 mSolverCounterSat, 390 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 287 SdHoareTripleChecker+Valid, 211 SdHoareTripleChecker+Invalid, 1196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 390 IncrementalHoareTripleChecker+Valid, 806 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-19 18:26:17,225 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [287 Valid, 211 Invalid, 1196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [390 Valid, 806 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-19 18:26:17,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1978 states. [2024-11-19 18:26:17,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1978 to 1978. [2024-11-19 18:26:17,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1978 states, 1977 states have (on average 1.2463328275164391) internal successors, (2464), 1977 states have internal predecessors, (2464), 0 states have call successors, (0), 0 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 18:26:17,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1978 states to 1978 states and 2464 transitions. [2024-11-19 18:26:17,261 INFO L78 Accepts]: Start accepts. Automaton has 1978 states and 2464 transitions. Word has length 87 [2024-11-19 18:26:17,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:26:17,262 INFO L471 AbstractCegarLoop]: Abstraction has 1978 states and 2464 transitions. [2024-11-19 18:26:17,263 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 2 states have internal predecessors, (87), 0 states have call successors, (0), 0 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 18:26:17,263 INFO L276 IsEmpty]: Start isEmpty. Operand 1978 states and 2464 transitions. [2024-11-19 18:26:17,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2024-11-19 18:26:17,269 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:26:17,269 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 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 18:26:17,270 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-19 18:26:17,270 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:26:17,272 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:26:17,272 INFO L85 PathProgramCache]: Analyzing trace with hash 1984937320, now seen corresponding path program 1 times [2024-11-19 18:26:17,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:26:17,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [795783857] [2024-11-19 18:26:17,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:26:17,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:26:17,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:26:17,459 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2024-11-19 18:26:17,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:26:17,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [795783857] [2024-11-19 18:26:17,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [795783857] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 18:26:17,460 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 18:26:17,460 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 18:26:17,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601359547] [2024-11-19 18:26:17,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 18:26:17,460 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 18:26:17,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:26:17,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 18:26:17,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 18:26:17,461 INFO L87 Difference]: Start difference. First operand 1978 states and 2464 transitions. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 2 states have internal predecessors, (104), 0 states have call successors, (0), 0 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 18:26:18,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:26:18,489 INFO L93 Difference]: Finished difference Result 4612 states and 5849 transitions. [2024-11-19 18:26:18,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 18:26:18,490 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 2 states have internal predecessors, (104), 0 states have call successors, (0), 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 170 [2024-11-19 18:26:18,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:26:18,500 INFO L225 Difference]: With dead ends: 4612 [2024-11-19 18:26:18,501 INFO L226 Difference]: Without dead ends: 2636 [2024-11-19 18:26:18,504 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 18:26:18,505 INFO L432 NwaCegarLoop]: 152 mSDtfsCounter, 358 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 811 mSolverCounterSat, 307 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 358 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 1118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 307 IncrementalHoareTripleChecker+Valid, 811 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-19 18:26:18,507 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [358 Valid, 156 Invalid, 1118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [307 Valid, 811 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-19 18:26:18,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2636 states. [2024-11-19 18:26:18,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2636 to 2307. [2024-11-19 18:26:18,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2307 states, 2306 states have (on average 1.2350390286209887) internal successors, (2848), 2306 states have internal predecessors, (2848), 0 states have call successors, (0), 0 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 18:26:18,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2307 states to 2307 states and 2848 transitions. [2024-11-19 18:26:18,537 INFO L78 Accepts]: Start accepts. Automaton has 2307 states and 2848 transitions. Word has length 170 [2024-11-19 18:26:18,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:26:18,538 INFO L471 AbstractCegarLoop]: Abstraction has 2307 states and 2848 transitions. [2024-11-19 18:26:18,538 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 2 states have internal predecessors, (104), 0 states have call successors, (0), 0 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 18:26:18,539 INFO L276 IsEmpty]: Start isEmpty. Operand 2307 states and 2848 transitions. [2024-11-19 18:26:18,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 348 [2024-11-19 18:26:18,548 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:26:18,548 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-19 18:26:18,548 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-19 18:26:18,549 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:26:18,549 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:26:18,549 INFO L85 PathProgramCache]: Analyzing trace with hash 1627459353, now seen corresponding path program 1 times [2024-11-19 18:26:18,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:26:18,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224590069] [2024-11-19 18:26:18,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:26:18,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:26:18,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:26:18,876 INFO L134 CoverageAnalysis]: Checked inductivity of 339 backedges. 202 proven. 0 refuted. 0 times theorem prover too weak. 137 trivial. 0 not checked. [2024-11-19 18:26:18,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:26:18,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1224590069] [2024-11-19 18:26:18,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1224590069] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 18:26:18,877 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 18:26:18,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 18:26:18,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872558207] [2024-11-19 18:26:18,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 18:26:18,877 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 18:26:18,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:26:18,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 18:26:18,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 18:26:18,878 INFO L87 Difference]: Start difference. First operand 2307 states and 2848 transitions. Second operand has 3 states, 3 states have (on average 75.0) internal successors, (225), 2 states have internal predecessors, (225), 0 states have call successors, (0), 0 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 18:26:19,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:26:19,915 INFO L93 Difference]: Finished difference Result 6915 states and 8539 transitions. [2024-11-19 18:26:19,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 18:26:19,916 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 75.0) internal successors, (225), 2 states have internal predecessors, (225), 0 states have call successors, (0), 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 347 [2024-11-19 18:26:19,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:26:19,928 INFO L225 Difference]: With dead ends: 6915 [2024-11-19 18:26:19,929 INFO L226 Difference]: Without dead ends: 4610 [2024-11-19 18:26:19,932 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 18:26:19,933 INFO L432 NwaCegarLoop]: 116 mSDtfsCounter, 252 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 939 mSolverCounterSat, 352 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 252 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 1291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 352 IncrementalHoareTripleChecker+Valid, 939 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-19 18:26:19,934 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [252 Valid, 121 Invalid, 1291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [352 Valid, 939 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-19 18:26:19,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4610 states. [2024-11-19 18:26:19,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4610 to 4281. [2024-11-19 18:26:20,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4281 states, 4280 states have (on average 1.2121495327102805) internal successors, (5188), 4280 states have internal predecessors, (5188), 0 states have call successors, (0), 0 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 18:26:20,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4281 states to 4281 states and 5188 transitions. [2024-11-19 18:26:20,026 INFO L78 Accepts]: Start accepts. Automaton has 4281 states and 5188 transitions. Word has length 347 [2024-11-19 18:26:20,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:26:20,026 INFO L471 AbstractCegarLoop]: Abstraction has 4281 states and 5188 transitions. [2024-11-19 18:26:20,027 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 75.0) internal successors, (225), 2 states have internal predecessors, (225), 0 states have call successors, (0), 0 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 18:26:20,027 INFO L276 IsEmpty]: Start isEmpty. Operand 4281 states and 5188 transitions. [2024-11-19 18:26:20,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 439 [2024-11-19 18:26:20,032 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:26:20,032 INFO L215 NwaCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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 18:26:20,032 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-19 18:26:20,033 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:26:20,033 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:26:20,034 INFO L85 PathProgramCache]: Analyzing trace with hash 1891737632, now seen corresponding path program 1 times [2024-11-19 18:26:20,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:26:20,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033702778] [2024-11-19 18:26:20,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:26:20,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:26:20,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:26:20,568 INFO L134 CoverageAnalysis]: Checked inductivity of 281 backedges. 188 proven. 0 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2024-11-19 18:26:20,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:26:20,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2033702778] [2024-11-19 18:26:20,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2033702778] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 18:26:20,569 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 18:26:20,569 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 18:26:20,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670752638] [2024-11-19 18:26:20,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 18:26:20,571 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 18:26:20,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:26:20,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 18:26:20,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 18:26:20,572 INFO L87 Difference]: Start difference. First operand 4281 states and 5188 transitions. Second operand has 4 states, 4 states have (on average 90.0) internal successors, (360), 3 states have internal predecessors, (360), 0 states have call successors, (0), 0 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 18:26:21,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:26:21,665 INFO L93 Difference]: Finished difference Result 8889 states and 10715 transitions. [2024-11-19 18:26:21,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 18:26:21,670 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 90.0) internal successors, (360), 3 states have internal predecessors, (360), 0 states have call successors, (0), 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 438 [2024-11-19 18:26:21,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:26:21,683 INFO L225 Difference]: With dead ends: 8889 [2024-11-19 18:26:21,684 INFO L226 Difference]: Without dead ends: 4610 [2024-11-19 18:26:21,688 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-19 18:26:21,690 INFO L432 NwaCegarLoop]: 267 mSDtfsCounter, 127 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 1469 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 322 SdHoareTripleChecker+Invalid, 1474 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 1469 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-19 18:26:21,691 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [127 Valid, 322 Invalid, 1474 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 1469 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-19 18:26:21,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4610 states. [2024-11-19 18:26:21,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4610 to 4610. [2024-11-19 18:26:21,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4610 states, 4609 states have (on average 1.198307658928184) internal successors, (5523), 4609 states have internal predecessors, (5523), 0 states have call successors, (0), 0 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 18:26:21,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4610 states to 4610 states and 5523 transitions. [2024-11-19 18:26:21,748 INFO L78 Accepts]: Start accepts. Automaton has 4610 states and 5523 transitions. Word has length 438 [2024-11-19 18:26:21,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:26:21,750 INFO L471 AbstractCegarLoop]: Abstraction has 4610 states and 5523 transitions. [2024-11-19 18:26:21,750 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 90.0) internal successors, (360), 3 states have internal predecessors, (360), 0 states have call successors, (0), 0 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 18:26:21,750 INFO L276 IsEmpty]: Start isEmpty. Operand 4610 states and 5523 transitions. [2024-11-19 18:26:21,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 526 [2024-11-19 18:26:21,756 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:26:21,757 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:26:21,757 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-19 18:26:21,757 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:26:21,757 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:26:21,758 INFO L85 PathProgramCache]: Analyzing trace with hash -1596327250, now seen corresponding path program 1 times [2024-11-19 18:26:21,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:26:21,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477423895] [2024-11-19 18:26:21,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:26:21,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:26:21,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:26:22,465 INFO L134 CoverageAnalysis]: Checked inductivity of 534 backedges. 381 proven. 0 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2024-11-19 18:26:22,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:26:22,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477423895] [2024-11-19 18:26:22,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1477423895] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 18:26:22,467 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 18:26:22,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-19 18:26:22,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896647919] [2024-11-19 18:26:22,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 18:26:22,468 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-19 18:26:22,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:26:22,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-19 18:26:22,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-19 18:26:22,470 INFO L87 Difference]: Start difference. First operand 4610 states and 5523 transitions. Second operand has 7 states, 7 states have (on average 56.57142857142857) internal successors, (396), 6 states have internal predecessors, (396), 0 states have call successors, (0), 0 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 18:26:23,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:26:23,705 INFO L93 Difference]: Finished difference Result 8748 states and 10556 transitions. [2024-11-19 18:26:23,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-19 18:26:23,705 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 56.57142857142857) internal successors, (396), 6 states have internal predecessors, (396), 0 states have call successors, (0), 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 525 [2024-11-19 18:26:23,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:26:23,717 INFO L225 Difference]: With dead ends: 8748 [2024-11-19 18:26:23,717 INFO L226 Difference]: Without dead ends: 4281 [2024-11-19 18:26:23,721 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-19 18:26:23,722 INFO L432 NwaCegarLoop]: 263 mSDtfsCounter, 308 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 1527 mSolverCounterSat, 485 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 308 SdHoareTripleChecker+Valid, 286 SdHoareTripleChecker+Invalid, 2012 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 485 IncrementalHoareTripleChecker+Valid, 1527 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-19 18:26:23,723 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [308 Valid, 286 Invalid, 2012 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [485 Valid, 1527 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-19 18:26:23,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4281 states. [2024-11-19 18:26:23,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4281 to 4281. [2024-11-19 18:26:23,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4281 states, 4280 states have (on average 1.0771028037383177) internal successors, (4610), 4280 states have internal predecessors, (4610), 0 states have call successors, (0), 0 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 18:26:23,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4281 states to 4281 states and 4610 transitions. [2024-11-19 18:26:23,769 INFO L78 Accepts]: Start accepts. Automaton has 4281 states and 4610 transitions. Word has length 525 [2024-11-19 18:26:23,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:26:23,769 INFO L471 AbstractCegarLoop]: Abstraction has 4281 states and 4610 transitions. [2024-11-19 18:26:23,770 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 56.57142857142857) internal successors, (396), 6 states have internal predecessors, (396), 0 states have call successors, (0), 0 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 18:26:23,770 INFO L276 IsEmpty]: Start isEmpty. Operand 4281 states and 4610 transitions. [2024-11-19 18:26:23,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 554 [2024-11-19 18:26:23,776 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:26:23,777 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:26:23,777 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-19 18:26:23,777 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:26:23,777 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:26:23,777 INFO L85 PathProgramCache]: Analyzing trace with hash -652120176, now seen corresponding path program 1 times [2024-11-19 18:26:23,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:26:23,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498439144] [2024-11-19 18:26:23,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:26:23,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:26:23,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:26:24,360 INFO L134 CoverageAnalysis]: Checked inductivity of 596 backedges. 503 proven. 0 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2024-11-19 18:26:24,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:26:24,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1498439144] [2024-11-19 18:26:24,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1498439144] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 18:26:24,361 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 18:26:24,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 18:26:24,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218057564] [2024-11-19 18:26:24,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 18:26:24,361 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 18:26:24,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:26:24,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 18:26:24,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-19 18:26:24,364 INFO L87 Difference]: Start difference. First operand 4281 states and 4610 transitions. Second operand has 4 states, 4 states have (on average 118.75) internal successors, (475), 3 states have internal predecessors, (475), 0 states have call successors, (0), 0 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 18:26:25,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:26:25,412 INFO L93 Difference]: Finished difference Result 12179 states and 13189 transitions. [2024-11-19 18:26:25,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 18:26:25,412 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 118.75) internal successors, (475), 3 states have internal predecessors, (475), 0 states have call successors, (0), 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 553 [2024-11-19 18:26:25,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:26:25,437 INFO L225 Difference]: With dead ends: 12179 [2024-11-19 18:26:25,437 INFO L226 Difference]: Without dead ends: 8229 [2024-11-19 18:26:25,442 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 18:26:25,442 INFO L432 NwaCegarLoop]: 81 mSDtfsCounter, 402 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 1264 mSolverCounterSat, 138 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 402 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 1402 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 138 IncrementalHoareTripleChecker+Valid, 1264 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-19 18:26:25,443 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [402 Valid, 90 Invalid, 1402 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [138 Valid, 1264 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-19 18:26:25,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8229 states. [2024-11-19 18:26:25,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8229 to 7900. [2024-11-19 18:26:25,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7900 states, 7899 states have (on average 1.0724142296493226) internal successors, (8471), 7899 states have internal predecessors, (8471), 0 states have call successors, (0), 0 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 18:26:25,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7900 states to 7900 states and 8471 transitions. [2024-11-19 18:26:25,535 INFO L78 Accepts]: Start accepts. Automaton has 7900 states and 8471 transitions. Word has length 553 [2024-11-19 18:26:25,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:26:25,536 INFO L471 AbstractCegarLoop]: Abstraction has 7900 states and 8471 transitions. [2024-11-19 18:26:25,536 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 118.75) internal successors, (475), 3 states have internal predecessors, (475), 0 states have call successors, (0), 0 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 18:26:25,536 INFO L276 IsEmpty]: Start isEmpty. Operand 7900 states and 8471 transitions. [2024-11-19 18:26:25,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 658 [2024-11-19 18:26:25,546 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:26:25,546 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 18:26:25,546 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-19 18:26:25,546 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:26:25,547 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:26:25,547 INFO L85 PathProgramCache]: Analyzing trace with hash 1405504529, now seen corresponding path program 1 times [2024-11-19 18:26:25,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:26:25,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340939682] [2024-11-19 18:26:25,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:26:25,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:26:25,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:26:26,009 INFO L134 CoverageAnalysis]: Checked inductivity of 963 backedges. 775 proven. 0 refuted. 0 times theorem prover too weak. 188 trivial. 0 not checked. [2024-11-19 18:26:26,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:26:26,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [340939682] [2024-11-19 18:26:26,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [340939682] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 18:26:26,010 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 18:26:26,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 18:26:26,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551985333] [2024-11-19 18:26:26,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 18:26:26,011 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 18:26:26,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:26:26,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 18:26:26,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 18:26:26,012 INFO L87 Difference]: Start difference. First operand 7900 states and 8471 transitions. Second operand has 3 states, 3 states have (on average 161.66666666666666) internal successors, (485), 3 states have internal predecessors, (485), 0 states have call successors, (0), 0 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 18:26:26,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:26:26,634 INFO L93 Difference]: Finished difference Result 18430 states and 19933 transitions. [2024-11-19 18:26:26,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 18:26:26,635 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 161.66666666666666) internal successors, (485), 3 states have internal predecessors, (485), 0 states have call successors, (0), 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 657 [2024-11-19 18:26:26,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:26:26,652 INFO L225 Difference]: With dead ends: 18430 [2024-11-19 18:26:26,652 INFO L226 Difference]: Without dead ends: 11190 [2024-11-19 18:26:26,660 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 18:26:26,661 INFO L432 NwaCegarLoop]: 34 mSDtfsCounter, 224 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 769 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 224 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 889 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 769 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-19 18:26:26,661 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [224 Valid, 38 Invalid, 889 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 769 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-19 18:26:26,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11190 states. [2024-11-19 18:26:26,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11190 to 11190. [2024-11-19 18:26:26,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11190 states, 11189 states have (on average 1.0761462150326213) internal successors, (12041), 11189 states have internal predecessors, (12041), 0 states have call successors, (0), 0 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 18:26:26,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11190 states to 11190 states and 12041 transitions. [2024-11-19 18:26:26,851 INFO L78 Accepts]: Start accepts. Automaton has 11190 states and 12041 transitions. Word has length 657 [2024-11-19 18:26:26,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:26:26,857 INFO L471 AbstractCegarLoop]: Abstraction has 11190 states and 12041 transitions. [2024-11-19 18:26:26,857 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 161.66666666666666) internal successors, (485), 3 states have internal predecessors, (485), 0 states have call successors, (0), 0 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 18:26:26,857 INFO L276 IsEmpty]: Start isEmpty. Operand 11190 states and 12041 transitions. [2024-11-19 18:26:26,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 777 [2024-11-19 18:26:26,876 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:26:26,876 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:26:26,877 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-19 18:26:26,877 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:26:26,880 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:26:26,881 INFO L85 PathProgramCache]: Analyzing trace with hash -1228823273, now seen corresponding path program 1 times [2024-11-19 18:26:26,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:26:26,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324559635] [2024-11-19 18:26:26,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:26:26,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:26:26,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:26:27,654 INFO L134 CoverageAnalysis]: Checked inductivity of 1406 backedges. 914 proven. 0 refuted. 0 times theorem prover too weak. 492 trivial. 0 not checked. [2024-11-19 18:26:27,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:26:27,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324559635] [2024-11-19 18:26:27,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1324559635] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 18:26:27,655 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 18:26:27,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 18:26:27,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23580368] [2024-11-19 18:26:27,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 18:26:27,656 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 18:26:27,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:26:27,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 18:26:27,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-19 18:26:27,657 INFO L87 Difference]: Start difference. First operand 11190 states and 12041 transitions. Second operand has 4 states, 4 states have (on average 131.0) internal successors, (524), 3 states have internal predecessors, (524), 0 states have call successors, (0), 0 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 18:26:28,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:26:28,448 INFO L93 Difference]: Finished difference Result 21720 states and 23413 transitions. [2024-11-19 18:26:28,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 18:26:28,448 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 131.0) internal successors, (524), 3 states have internal predecessors, (524), 0 states have call successors, (0), 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 776 [2024-11-19 18:26:28,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:26:28,466 INFO L225 Difference]: With dead ends: 21720 [2024-11-19 18:26:28,466 INFO L226 Difference]: Without dead ends: 11190 [2024-11-19 18:26:28,475 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 18:26:28,476 INFO L432 NwaCegarLoop]: 108 mSDtfsCounter, 173 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 1189 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 1192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-19 18:26:28,477 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [173 Valid, 118 Invalid, 1192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1189 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-19 18:26:28,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11190 states. [2024-11-19 18:26:28,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11190 to 11190. [2024-11-19 18:26:28,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11190 states, 11189 states have (on average 1.0758780945571544) internal successors, (12038), 11189 states have internal predecessors, (12038), 0 states have call successors, (0), 0 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 18:26:28,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11190 states to 11190 states and 12038 transitions. [2024-11-19 18:26:28,583 INFO L78 Accepts]: Start accepts. Automaton has 11190 states and 12038 transitions. Word has length 776 [2024-11-19 18:26:28,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:26:28,584 INFO L471 AbstractCegarLoop]: Abstraction has 11190 states and 12038 transitions. [2024-11-19 18:26:28,584 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 131.0) internal successors, (524), 3 states have internal predecessors, (524), 0 states have call successors, (0), 0 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 18:26:28,584 INFO L276 IsEmpty]: Start isEmpty. Operand 11190 states and 12038 transitions. [2024-11-19 18:26:28,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 838 [2024-11-19 18:26:28,594 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:26:28,594 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 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, 2, 2, 2, 2, 2, 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] [2024-11-19 18:26:28,594 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-19 18:26:28,595 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:26:28,595 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:26:28,595 INFO L85 PathProgramCache]: Analyzing trace with hash -190205531, now seen corresponding path program 1 times [2024-11-19 18:26:28,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:26:28,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1990445876] [2024-11-19 18:26:28,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:26:28,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:26:28,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:26:29,073 INFO L134 CoverageAnalysis]: Checked inductivity of 1467 backedges. 793 proven. 0 refuted. 0 times theorem prover too weak. 674 trivial. 0 not checked. [2024-11-19 18:26:29,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:26:29,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1990445876] [2024-11-19 18:26:29,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1990445876] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 18:26:29,073 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 18:26:29,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 18:26:29,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009396692] [2024-11-19 18:26:29,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 18:26:29,074 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 18:26:29,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:26:29,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 18:26:29,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 18:26:29,075 INFO L87 Difference]: Start difference. First operand 11190 states and 12038 transitions. Second operand has 3 states, 3 states have (on average 140.0) internal successors, (420), 3 states have internal predecessors, (420), 0 states have call successors, (0), 0 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 18:26:29,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:26:29,733 INFO L93 Difference]: Finished difference Result 24352 states and 26363 transitions. [2024-11-19 18:26:29,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 18:26:29,734 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 140.0) internal successors, (420), 3 states have internal predecessors, (420), 0 states have call successors, (0), 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 837 [2024-11-19 18:26:29,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:26:29,753 INFO L225 Difference]: With dead ends: 24352 [2024-11-19 18:26:29,753 INFO L226 Difference]: Without dead ends: 13822 [2024-11-19 18:26:29,764 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 18:26:29,765 INFO L432 NwaCegarLoop]: 431 mSDtfsCounter, 220 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 760 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 220 SdHoareTripleChecker+Valid, 437 SdHoareTripleChecker+Invalid, 864 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 760 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-19 18:26:29,765 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [220 Valid, 437 Invalid, 864 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 760 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-19 18:26:29,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13822 states. [2024-11-19 18:26:29,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13822 to 13164. [2024-11-19 18:26:29,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13164 states, 13163 states have (on average 1.0656385322494872) internal successors, (14027), 13163 states have internal predecessors, (14027), 0 states have call successors, (0), 0 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 18:26:29,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13164 states to 13164 states and 14027 transitions. [2024-11-19 18:26:29,958 INFO L78 Accepts]: Start accepts. Automaton has 13164 states and 14027 transitions. Word has length 837 [2024-11-19 18:26:29,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:26:29,959 INFO L471 AbstractCegarLoop]: Abstraction has 13164 states and 14027 transitions. [2024-11-19 18:26:29,959 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 140.0) internal successors, (420), 3 states have internal predecessors, (420), 0 states have call successors, (0), 0 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 18:26:29,960 INFO L276 IsEmpty]: Start isEmpty. Operand 13164 states and 14027 transitions. [2024-11-19 18:26:29,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 839 [2024-11-19 18:26:29,974 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:26:29,975 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-19 18:26:29,975 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-19 18:26:29,975 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:26:29,976 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:26:29,977 INFO L85 PathProgramCache]: Analyzing trace with hash 2057904860, now seen corresponding path program 1 times [2024-11-19 18:26:29,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:26:29,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387696622] [2024-11-19 18:26:29,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:26:29,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:26:30,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:26:30,513 INFO L134 CoverageAnalysis]: Checked inductivity of 1472 backedges. 410 proven. 0 refuted. 0 times theorem prover too weak. 1062 trivial. 0 not checked. [2024-11-19 18:26:30,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:26:30,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387696622] [2024-11-19 18:26:30,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1387696622] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 18:26:30,514 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 18:26:30,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 18:26:30,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930686941] [2024-11-19 18:26:30,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 18:26:30,515 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 18:26:30,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:26:30,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 18:26:30,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 18:26:30,515 INFO L87 Difference]: Start difference. First operand 13164 states and 14027 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 18:26:31,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:26:31,243 INFO L93 Difference]: Finished difference Result 30603 states and 32692 transitions. [2024-11-19 18:26:31,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 18:26:31,244 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 838 [2024-11-19 18:26:31,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:26:31,263 INFO L225 Difference]: With dead ends: 30603 [2024-11-19 18:26:31,263 INFO L226 Difference]: Without dead ends: 16125 [2024-11-19 18:26:31,274 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 18:26:31,274 INFO L432 NwaCegarLoop]: 424 mSDtfsCounter, 270 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 747 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 270 SdHoareTripleChecker+Valid, 430 SdHoareTripleChecker+Invalid, 840 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 747 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-19 18:26:31,275 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [270 Valid, 430 Invalid, 840 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 747 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-19 18:26:31,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16125 states. [2024-11-19 18:26:31,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16125 to 16125. [2024-11-19 18:26:31,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16125 states, 16124 states have (on average 1.0506698089804019) internal successors, (16941), 16124 states have internal predecessors, (16941), 0 states have call successors, (0), 0 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 18:26:31,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16125 states to 16125 states and 16941 transitions. [2024-11-19 18:26:31,421 INFO L78 Accepts]: Start accepts. Automaton has 16125 states and 16941 transitions. Word has length 838 [2024-11-19 18:26:31,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:26:31,422 INFO L471 AbstractCegarLoop]: Abstraction has 16125 states and 16941 transitions. [2024-11-19 18:26:31,422 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 18:26:31,422 INFO L276 IsEmpty]: Start isEmpty. Operand 16125 states and 16941 transitions. [2024-11-19 18:26:31,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1108 [2024-11-19 18:26:31,438 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:26:31,438 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 18:26:31,438 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-19 18:26:31,438 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:26:31,439 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:26:31,439 INFO L85 PathProgramCache]: Analyzing trace with hash 999513901, now seen corresponding path program 1 times [2024-11-19 18:26:31,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:26:31,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193100080] [2024-11-19 18:26:31,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:26:31,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:26:31,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:26:32,369 INFO L134 CoverageAnalysis]: Checked inductivity of 2307 backedges. 1152 proven. 0 refuted. 0 times theorem prover too weak. 1155 trivial. 0 not checked. [2024-11-19 18:26:32,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:26:32,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193100080] [2024-11-19 18:26:32,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1193100080] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 18:26:32,369 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 18:26:32,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 18:26:32,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961985860] [2024-11-19 18:26:32,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 18:26:32,370 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 18:26:32,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:26:32,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 18:26:32,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 18:26:32,372 INFO L87 Difference]: Start difference. First operand 16125 states and 16941 transitions. Second operand has 3 states, 3 states have (on average 171.0) internal successors, (513), 3 states have internal predecessors, (513), 0 states have call successors, (0), 0 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 18:26:32,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:26:32,938 INFO L93 Difference]: Finished difference Result 31590 states and 33216 transitions. [2024-11-19 18:26:32,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 18:26:32,942 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 171.0) internal successors, (513), 3 states have internal predecessors, (513), 0 states have call successors, (0), 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 1107 [2024-11-19 18:26:32,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:26:32,959 INFO L225 Difference]: With dead ends: 31590 [2024-11-19 18:26:32,959 INFO L226 Difference]: Without dead ends: 16125 [2024-11-19 18:26:32,971 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 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 18:26:32,972 INFO L432 NwaCegarLoop]: 371 mSDtfsCounter, 94 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 770 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 377 SdHoareTripleChecker+Invalid, 788 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 770 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-19 18:26:32,972 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 377 Invalid, 788 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 770 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-19 18:26:32,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16125 states. [2024-11-19 18:26:33,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16125 to 15796. [2024-11-19 18:26:33,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15796 states, 15795 states have (on average 1.0457106679328902) internal successors, (16517), 15795 states have internal predecessors, (16517), 0 states have call successors, (0), 0 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 18:26:33,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15796 states to 15796 states and 16517 transitions. [2024-11-19 18:26:33,129 INFO L78 Accepts]: Start accepts. Automaton has 15796 states and 16517 transitions. Word has length 1107 [2024-11-19 18:26:33,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:26:33,130 INFO L471 AbstractCegarLoop]: Abstraction has 15796 states and 16517 transitions. [2024-11-19 18:26:33,130 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 171.0) internal successors, (513), 3 states have internal predecessors, (513), 0 states have call successors, (0), 0 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 18:26:33,130 INFO L276 IsEmpty]: Start isEmpty. Operand 15796 states and 16517 transitions. [2024-11-19 18:26:33,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1176 [2024-11-19 18:26:33,150 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:26:33,150 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 18:26:33,150 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-19 18:26:33,150 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:26:33,151 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:26:33,151 INFO L85 PathProgramCache]: Analyzing trace with hash -1557559950, now seen corresponding path program 1 times [2024-11-19 18:26:33,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:26:33,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675950872] [2024-11-19 18:26:33,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:26:33,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:26:33,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:26:33,928 INFO L134 CoverageAnalysis]: Checked inductivity of 2792 backedges. 908 proven. 0 refuted. 0 times theorem prover too weak. 1884 trivial. 0 not checked. [2024-11-19 18:26:33,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:26:33,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675950872] [2024-11-19 18:26:33,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1675950872] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 18:26:33,929 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 18:26:33,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 18:26:33,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124770430] [2024-11-19 18:26:33,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 18:26:33,930 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 18:26:33,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:26:33,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 18:26:33,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 18:26:33,931 INFO L87 Difference]: Start difference. First operand 15796 states and 16517 transitions. Second operand has 3 states, 3 states have (on average 119.66666666666667) internal successors, (359), 3 states have internal predecessors, (359), 0 states have call successors, (0), 0 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 18:26:34,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:26:34,523 INFO L93 Difference]: Finished difference Result 33893 states and 35500 transitions. [2024-11-19 18:26:34,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 18:26:34,523 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 119.66666666666667) internal successors, (359), 3 states have internal predecessors, (359), 0 states have call successors, (0), 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 1175 [2024-11-19 18:26:34,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:26:34,538 INFO L225 Difference]: With dead ends: 33893 [2024-11-19 18:26:34,538 INFO L226 Difference]: Without dead ends: 17112 [2024-11-19 18:26:34,547 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 18:26:34,548 INFO L432 NwaCegarLoop]: 405 mSDtfsCounter, 274 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 756 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 274 SdHoareTripleChecker+Valid, 410 SdHoareTripleChecker+Invalid, 821 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 756 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-19 18:26:34,548 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [274 Valid, 410 Invalid, 821 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 756 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-19 18:26:34,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17112 states. [2024-11-19 18:26:34,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17112 to 14809. [2024-11-19 18:26:34,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14809 states, 14808 states have (on average 1.0384251755807672) internal successors, (15377), 14808 states have internal predecessors, (15377), 0 states have call successors, (0), 0 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 18:26:34,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14809 states to 14809 states and 15377 transitions. [2024-11-19 18:26:34,671 INFO L78 Accepts]: Start accepts. Automaton has 14809 states and 15377 transitions. Word has length 1175 [2024-11-19 18:26:34,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:26:34,671 INFO L471 AbstractCegarLoop]: Abstraction has 14809 states and 15377 transitions. [2024-11-19 18:26:34,672 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 119.66666666666667) internal successors, (359), 3 states have internal predecessors, (359), 0 states have call successors, (0), 0 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 18:26:34,672 INFO L276 IsEmpty]: Start isEmpty. Operand 14809 states and 15377 transitions. [2024-11-19 18:26:34,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1230 [2024-11-19 18:26:34,691 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:26:34,692 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 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 18:26:34,692 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-19 18:26:34,692 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:26:34,692 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:26:34,693 INFO L85 PathProgramCache]: Analyzing trace with hash 902241264, now seen corresponding path program 1 times [2024-11-19 18:26:34,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:26:34,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [776513006] [2024-11-19 18:26:34,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:26:34,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:26:34,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:26:35,233 INFO L134 CoverageAnalysis]: Checked inductivity of 3310 backedges. 2116 proven. 0 refuted. 0 times theorem prover too weak. 1194 trivial. 0 not checked. [2024-11-19 18:26:35,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:26:35,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [776513006] [2024-11-19 18:26:35,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [776513006] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 18:26:35,234 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 18:26:35,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 18:26:35,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994997395] [2024-11-19 18:26:35,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 18:26:35,235 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 18:26:35,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:26:35,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 18:26:35,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 18:26:35,236 INFO L87 Difference]: Start difference. First operand 14809 states and 15377 transitions. Second operand has 3 states, 3 states have (on average 198.66666666666666) internal successors, (596), 3 states have internal predecessors, (596), 0 states have call successors, (0), 0 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 18:26:35,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:26:35,820 INFO L93 Difference]: Finished difference Result 30274 states and 31444 transitions. [2024-11-19 18:26:35,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 18:26:35,821 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 198.66666666666666) internal successors, (596), 3 states have internal predecessors, (596), 0 states have call successors, (0), 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 1229 [2024-11-19 18:26:35,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:26:35,836 INFO L225 Difference]: With dead ends: 30274 [2024-11-19 18:26:35,836 INFO L226 Difference]: Without dead ends: 16125 [2024-11-19 18:26:35,846 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 18:26:35,846 INFO L432 NwaCegarLoop]: 413 mSDtfsCounter, 194 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 750 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 194 SdHoareTripleChecker+Valid, 418 SdHoareTripleChecker+Invalid, 796 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 750 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-19 18:26:35,847 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [194 Valid, 418 Invalid, 796 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 750 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-19 18:26:35,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16125 states. [2024-11-19 18:26:35,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16125 to 15138. [2024-11-19 18:26:35,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15138 states, 15137 states have (on average 1.03382440377882) internal successors, (15649), 15137 states have internal predecessors, (15649), 0 states have call successors, (0), 0 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 18:26:35,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15138 states to 15138 states and 15649 transitions. [2024-11-19 18:26:35,971 INFO L78 Accepts]: Start accepts. Automaton has 15138 states and 15649 transitions. Word has length 1229 [2024-11-19 18:26:35,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:26:35,972 INFO L471 AbstractCegarLoop]: Abstraction has 15138 states and 15649 transitions. [2024-11-19 18:26:35,972 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 198.66666666666666) internal successors, (596), 3 states have internal predecessors, (596), 0 states have call successors, (0), 0 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 18:26:35,972 INFO L276 IsEmpty]: Start isEmpty. Operand 15138 states and 15649 transitions. [2024-11-19 18:26:35,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1259 [2024-11-19 18:26:35,992 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:26:35,993 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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] [2024-11-19 18:26:35,993 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-19 18:26:35,993 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:26:35,993 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:26:35,993 INFO L85 PathProgramCache]: Analyzing trace with hash -452833651, now seen corresponding path program 1 times [2024-11-19 18:26:35,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:26:35,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591669720] [2024-11-19 18:26:35,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:26:35,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:26:36,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:26:36,580 INFO L134 CoverageAnalysis]: Checked inductivity of 3438 backedges. 2385 proven. 0 refuted. 0 times theorem prover too weak. 1053 trivial. 0 not checked. [2024-11-19 18:26:36,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:26:36,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591669720] [2024-11-19 18:26:36,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [591669720] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 18:26:36,580 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 18:26:36,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 18:26:36,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747596292] [2024-11-19 18:26:36,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 18:26:36,582 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 18:26:36,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:26:36,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 18:26:36,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 18:26:36,583 INFO L87 Difference]: Start difference. First operand 15138 states and 15649 transitions. Second operand has 3 states, 3 states have (on average 199.33333333333334) internal successors, (598), 3 states have internal predecessors, (598), 0 states have call successors, (0), 0 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 18:26:37,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:26:37,183 INFO L93 Difference]: Finished difference Result 29945 states and 30962 transitions. [2024-11-19 18:26:37,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 18:26:37,183 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 199.33333333333334) internal successors, (598), 3 states have internal predecessors, (598), 0 states have call successors, (0), 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 1258 [2024-11-19 18:26:37,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:26:37,201 INFO L225 Difference]: With dead ends: 29945 [2024-11-19 18:26:37,201 INFO L226 Difference]: Without dead ends: 15138 [2024-11-19 18:26:37,213 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 18:26:37,214 INFO L432 NwaCegarLoop]: 415 mSDtfsCounter, 193 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 754 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 193 SdHoareTripleChecker+Valid, 421 SdHoareTripleChecker+Invalid, 822 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 754 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-19 18:26:37,214 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [193 Valid, 421 Invalid, 822 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 754 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-19 18:26:37,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15138 states. [2024-11-19 18:26:37,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15138 to 14809. [2024-11-19 18:26:37,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14809 states, 14808 states have (on average 1.0274851431658563) internal successors, (15215), 14808 states have internal predecessors, (15215), 0 states have call successors, (0), 0 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 18:26:37,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14809 states to 14809 states and 15215 transitions. [2024-11-19 18:26:37,360 INFO L78 Accepts]: Start accepts. Automaton has 14809 states and 15215 transitions. Word has length 1258 [2024-11-19 18:26:37,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:26:37,360 INFO L471 AbstractCegarLoop]: Abstraction has 14809 states and 15215 transitions. [2024-11-19 18:26:37,361 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 199.33333333333334) internal successors, (598), 3 states have internal predecessors, (598), 0 states have call successors, (0), 0 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 18:26:37,361 INFO L276 IsEmpty]: Start isEmpty. Operand 14809 states and 15215 transitions. [2024-11-19 18:26:37,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1269 [2024-11-19 18:26:37,373 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:26:37,374 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 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, 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 18:26:37,374 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-19 18:26:37,374 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:26:37,374 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:26:37,374 INFO L85 PathProgramCache]: Analyzing trace with hash 831999199, now seen corresponding path program 1 times [2024-11-19 18:26:37,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:26:37,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368492216] [2024-11-19 18:26:37,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:26:37,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:26:37,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:26:38,794 INFO L134 CoverageAnalysis]: Checked inductivity of 2776 backedges. 1787 proven. 16 refuted. 0 times theorem prover too weak. 973 trivial. 0 not checked. [2024-11-19 18:26:38,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:26:38,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368492216] [2024-11-19 18:26:38,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1368492216] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 18:26:38,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [739900807] [2024-11-19 18:26:38,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:26:38,795 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 18:26:38,795 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 18:26:38,797 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 18:26:38,798 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-19 18:26:39,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:26:39,080 INFO L255 TraceCheckSpWp]: Trace formula consists of 1454 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-19 18:26:39,101 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 18:26:39,341 INFO L134 CoverageAnalysis]: Checked inductivity of 2776 backedges. 1034 proven. 0 refuted. 0 times theorem prover too weak. 1742 trivial. 0 not checked. [2024-11-19 18:26:39,341 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 18:26:39,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [739900807] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 18:26:39,341 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 18:26:39,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2024-11-19 18:26:39,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543058082] [2024-11-19 18:26:39,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 18:26:39,342 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 18:26:39,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:26:39,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 18:26:39,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-19 18:26:39,343 INFO L87 Difference]: Start difference. First operand 14809 states and 15215 transitions. Second operand has 3 states, 3 states have (on average 167.66666666666666) internal successors, (503), 3 states have internal predecessors, (503), 0 states have call successors, (0), 0 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 18:26:39,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:26:39,929 INFO L93 Difference]: Finished difference Result 29287 states and 30097 transitions. [2024-11-19 18:26:39,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 18:26:39,930 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 167.66666666666666) internal successors, (503), 3 states have internal predecessors, (503), 0 states have call successors, (0), 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 1268 [2024-11-19 18:26:39,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:26:39,944 INFO L225 Difference]: With dead ends: 29287 [2024-11-19 18:26:39,945 INFO L226 Difference]: Without dead ends: 14809 [2024-11-19 18:26:39,954 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1275 GetRequests, 1269 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-19 18:26:39,955 INFO L432 NwaCegarLoop]: 404 mSDtfsCounter, 120 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 754 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 410 SdHoareTripleChecker+Invalid, 800 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 754 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-19 18:26:39,955 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 410 Invalid, 800 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 754 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-19 18:26:39,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14809 states. [2024-11-19 18:26:40,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14809 to 13822. [2024-11-19 18:26:40,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13822 states, 13821 states have (on average 1.020765501772665) internal successors, (14108), 13821 states have internal predecessors, (14108), 0 states have call successors, (0), 0 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 18:26:40,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13822 states to 13822 states and 14108 transitions. [2024-11-19 18:26:40,066 INFO L78 Accepts]: Start accepts. Automaton has 13822 states and 14108 transitions. Word has length 1268 [2024-11-19 18:26:40,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:26:40,067 INFO L471 AbstractCegarLoop]: Abstraction has 13822 states and 14108 transitions. [2024-11-19 18:26:40,067 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 167.66666666666666) internal successors, (503), 3 states have internal predecessors, (503), 0 states have call successors, (0), 0 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 18:26:40,067 INFO L276 IsEmpty]: Start isEmpty. Operand 13822 states and 14108 transitions. [2024-11-19 18:26:40,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1317 [2024-11-19 18:26:40,080 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:26:40,080 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-19 18:26:40,088 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-19 18:26:40,280 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-19 18:26:40,281 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:26:40,281 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:26:40,282 INFO L85 PathProgramCache]: Analyzing trace with hash 313906034, now seen corresponding path program 1 times [2024-11-19 18:26:40,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:26:40,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766911030] [2024-11-19 18:26:40,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:26:40,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:26:40,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:26:41,237 INFO L134 CoverageAnalysis]: Checked inductivity of 3744 backedges. 1771 proven. 0 refuted. 0 times theorem prover too weak. 1973 trivial. 0 not checked. [2024-11-19 18:26:41,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:26:41,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1766911030] [2024-11-19 18:26:41,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1766911030] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 18:26:41,237 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 18:26:41,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 18:26:41,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967672745] [2024-11-19 18:26:41,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 18:26:41,238 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 18:26:41,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:26:41,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 18:26:41,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 18:26:41,239 INFO L87 Difference]: Start difference. First operand 13822 states and 14108 transitions. Second operand has 3 states, 3 states have (on average 190.66666666666666) internal successors, (572), 3 states have internal predecessors, (572), 0 states have call successors, (0), 0 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 18:26:41,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:26:41,870 INFO L93 Difference]: Finished difference Result 27642 states and 28221 transitions. [2024-11-19 18:26:41,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 18:26:41,870 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 190.66666666666666) internal successors, (572), 3 states have internal predecessors, (572), 0 states have call successors, (0), 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 1316 [2024-11-19 18:26:41,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:26:41,883 INFO L225 Difference]: With dead ends: 27642 [2024-11-19 18:26:41,883 INFO L226 Difference]: Without dead ends: 14480 [2024-11-19 18:26:41,891 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 18:26:41,891 INFO L432 NwaCegarLoop]: 425 mSDtfsCounter, 224 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 748 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 224 SdHoareTripleChecker+Valid, 431 SdHoareTripleChecker+Invalid, 753 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 748 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-19 18:26:41,892 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [224 Valid, 431 Invalid, 753 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 748 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-19 18:26:41,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14480 states. [2024-11-19 18:26:41,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14480 to 14480. [2024-11-19 18:26:41,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14480 states, 14479 states have (on average 1.0201671386145452) internal successors, (14771), 14479 states have internal predecessors, (14771), 0 states have call successors, (0), 0 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 18:26:41,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14480 states to 14480 states and 14771 transitions. [2024-11-19 18:26:41,994 INFO L78 Accepts]: Start accepts. Automaton has 14480 states and 14771 transitions. Word has length 1316 [2024-11-19 18:26:41,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:26:41,995 INFO L471 AbstractCegarLoop]: Abstraction has 14480 states and 14771 transitions. [2024-11-19 18:26:41,995 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 190.66666666666666) internal successors, (572), 3 states have internal predecessors, (572), 0 states have call successors, (0), 0 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 18:26:41,995 INFO L276 IsEmpty]: Start isEmpty. Operand 14480 states and 14771 transitions. [2024-11-19 18:26:42,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1340 [2024-11-19 18:26:42,008 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:26:42,008 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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 18:26:42,008 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-19 18:26:42,008 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:26:42,009 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:26:42,009 INFO L85 PathProgramCache]: Analyzing trace with hash -615085213, now seen corresponding path program 1 times [2024-11-19 18:26:42,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:26:42,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203641580] [2024-11-19 18:26:42,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:26:42,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:26:42,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:26:43,494 INFO L134 CoverageAnalysis]: Checked inductivity of 3568 backedges. 2835 proven. 132 refuted. 0 times theorem prover too weak. 601 trivial. 0 not checked. [2024-11-19 18:26:43,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:26:43,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203641580] [2024-11-19 18:26:43,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1203641580] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 18:26:43,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1398588722] [2024-11-19 18:26:43,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:26:43,495 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 18:26:43,496 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 18:26:43,498 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 18:26:43,498 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-19 18:26:43,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:26:43,836 INFO L255 TraceCheckSpWp]: Trace formula consists of 1569 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-19 18:26:43,852 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 18:26:44,457 INFO L134 CoverageAnalysis]: Checked inductivity of 3568 backedges. 1152 proven. 0 refuted. 0 times theorem prover too weak. 2416 trivial. 0 not checked. [2024-11-19 18:26:44,458 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 18:26:44,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1398588722] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 18:26:44,458 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 18:26:44,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-11-19 18:26:44,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062806899] [2024-11-19 18:26:44,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 18:26:44,460 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 18:26:44,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:26:44,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 18:26:44,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-19 18:26:44,462 INFO L87 Difference]: Start difference. First operand 14480 states and 14771 transitions. Second operand has 3 states, 3 states have (on average 160.66666666666666) internal successors, (482), 3 states have internal predecessors, (482), 0 states have call successors, (0), 0 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 18:26:45,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:26:45,104 INFO L93 Difference]: Finished difference Result 28300 states and 28878 transitions. [2024-11-19 18:26:45,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 18:26:45,105 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 160.66666666666666) internal successors, (482), 3 states have internal predecessors, (482), 0 states have call successors, (0), 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 1339 [2024-11-19 18:26:45,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:26:45,121 INFO L225 Difference]: With dead ends: 28300 [2024-11-19 18:26:45,121 INFO L226 Difference]: Without dead ends: 14480 [2024-11-19 18:26:45,130 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1343 GetRequests, 1339 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-19 18:26:45,130 INFO L432 NwaCegarLoop]: 418 mSDtfsCounter, 117 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 742 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 424 SdHoareTripleChecker+Invalid, 754 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 742 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-19 18:26:45,130 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 424 Invalid, 754 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 742 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-19 18:26:45,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14480 states. [2024-11-19 18:26:45,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14480 to 14480. [2024-11-19 18:26:45,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14480 states, 14479 states have (on average 1.0198218108985426) internal successors, (14766), 14479 states have internal predecessors, (14766), 0 states have call successors, (0), 0 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 18:26:45,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14480 states to 14480 states and 14766 transitions. [2024-11-19 18:26:45,251 INFO L78 Accepts]: Start accepts. Automaton has 14480 states and 14766 transitions. Word has length 1339 [2024-11-19 18:26:45,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:26:45,252 INFO L471 AbstractCegarLoop]: Abstraction has 14480 states and 14766 transitions. [2024-11-19 18:26:45,252 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 160.66666666666666) internal successors, (482), 3 states have internal predecessors, (482), 0 states have call successors, (0), 0 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 18:26:45,252 INFO L276 IsEmpty]: Start isEmpty. Operand 14480 states and 14766 transitions. [2024-11-19 18:26:45,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1749 [2024-11-19 18:26:45,270 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:26:45,270 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 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] [2024-11-19 18:26:45,279 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-19 18:26:45,470 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 18:26:45,471 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:26:45,471 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:26:45,471 INFO L85 PathProgramCache]: Analyzing trace with hash -745351527, now seen corresponding path program 1 times [2024-11-19 18:26:45,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:26:45,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [308973011] [2024-11-19 18:26:45,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:26:45,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:26:45,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:26:46,985 INFO L134 CoverageAnalysis]: Checked inductivity of 5679 backedges. 3915 proven. 0 refuted. 0 times theorem prover too weak. 1764 trivial. 0 not checked. [2024-11-19 18:26:46,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:26:46,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [308973011] [2024-11-19 18:26:46,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [308973011] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 18:26:46,986 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 18:26:46,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 18:26:46,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000937578] [2024-11-19 18:26:46,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 18:26:46,989 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 18:26:46,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:26:46,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 18:26:46,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 18:26:46,990 INFO L87 Difference]: Start difference. First operand 14480 states and 14766 transitions. Second operand has 4 states, 4 states have (on average 191.0) internal successors, (764), 4 states have internal predecessors, (764), 0 states have call successors, (0), 0 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 18:26:47,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:26:47,716 INFO L93 Difference]: Finished difference Result 28310 states and 28878 transitions. [2024-11-19 18:26:47,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 18:26:47,717 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 191.0) internal successors, (764), 4 states have internal predecessors, (764), 0 states have call successors, (0), 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 1748 [2024-11-19 18:26:47,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:26:47,729 INFO L225 Difference]: With dead ends: 28310 [2024-11-19 18:26:47,729 INFO L226 Difference]: Without dead ends: 14490 [2024-11-19 18:26:47,736 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-19 18:26:47,736 INFO L432 NwaCegarLoop]: 423 mSDtfsCounter, 217 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 1317 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 217 SdHoareTripleChecker+Valid, 437 SdHoareTripleChecker+Invalid, 1340 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 1317 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-19 18:26:47,736 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [217 Valid, 437 Invalid, 1340 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 1317 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-19 18:26:47,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14490 states. [2024-11-19 18:26:47,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14490 to 14480. [2024-11-19 18:26:47,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14480 states, 14479 states have (on average 1.0196836798121418) internal successors, (14764), 14479 states have internal predecessors, (14764), 0 states have call successors, (0), 0 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 18:26:47,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14480 states to 14480 states and 14764 transitions. [2024-11-19 18:26:47,844 INFO L78 Accepts]: Start accepts. Automaton has 14480 states and 14764 transitions. Word has length 1748 [2024-11-19 18:26:47,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:26:47,845 INFO L471 AbstractCegarLoop]: Abstraction has 14480 states and 14764 transitions. [2024-11-19 18:26:47,845 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 191.0) internal successors, (764), 4 states have internal predecessors, (764), 0 states have call successors, (0), 0 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 18:26:47,845 INFO L276 IsEmpty]: Start isEmpty. Operand 14480 states and 14764 transitions. [2024-11-19 18:26:47,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1981 [2024-11-19 18:26:47,900 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:26:47,901 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 18:26:47,902 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-19 18:26:47,902 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:26:47,902 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:26:47,903 INFO L85 PathProgramCache]: Analyzing trace with hash 1120068063, now seen corresponding path program 1 times [2024-11-19 18:26:47,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:26:47,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [57960810] [2024-11-19 18:26:47,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:26:47,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:26:48,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:26:51,309 INFO L134 CoverageAnalysis]: Checked inductivity of 7525 backedges. 3766 proven. 505 refuted. 0 times theorem prover too weak. 3254 trivial. 0 not checked. [2024-11-19 18:26:51,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:26:51,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [57960810] [2024-11-19 18:26:51,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [57960810] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 18:26:51,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1786364532] [2024-11-19 18:26:51,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:26:51,310 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 18:26:51,310 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 18:26:51,311 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 18:26:51,312 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-19 18:26:51,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:26:51,701 INFO L255 TraceCheckSpWp]: Trace formula consists of 2270 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-19 18:26:51,712 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 18:26:51,840 INFO L134 CoverageAnalysis]: Checked inductivity of 7525 backedges. 4418 proven. 0 refuted. 0 times theorem prover too weak. 3107 trivial. 0 not checked. [2024-11-19 18:26:51,841 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 18:26:51,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1786364532] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 18:26:51,841 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 18:26:51,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2024-11-19 18:26:51,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229220826] [2024-11-19 18:26:51,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 18:26:51,844 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 18:26:51,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:26:51,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 18:26:51,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-19 18:26:51,845 INFO L87 Difference]: Start difference. First operand 14480 states and 14764 transitions. Second operand has 3 states, 3 states have (on average 209.0) internal successors, (627), 3 states have internal predecessors, (627), 0 states have call successors, (0), 0 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 18:26:52,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:26:52,457 INFO L93 Difference]: Finished difference Result 30603 states and 31207 transitions. [2024-11-19 18:26:52,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 18:26:52,457 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 209.0) internal successors, (627), 3 states have internal predecessors, (627), 0 states have call successors, (0), 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 1980 [2024-11-19 18:26:52,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:26:52,473 INFO L225 Difference]: With dead ends: 30603 [2024-11-19 18:26:52,473 INFO L226 Difference]: Without dead ends: 16783 [2024-11-19 18:26:52,482 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1988 GetRequests, 1982 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-19 18:26:52,483 INFO L432 NwaCegarLoop]: 421 mSDtfsCounter, 221 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 781 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 221 SdHoareTripleChecker+Valid, 427 SdHoareTripleChecker+Invalid, 809 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 781 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-19 18:26:52,483 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [221 Valid, 427 Invalid, 809 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 781 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-19 18:26:52,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16783 states. [2024-11-19 18:26:52,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16783 to 15796. [2024-11-19 18:26:52,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15796 states, 15795 states have (on average 1.0189300411522633) internal successors, (16094), 15795 states have internal predecessors, (16094), 0 states have call successors, (0), 0 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 18:26:52,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15796 states to 15796 states and 16094 transitions. [2024-11-19 18:26:52,610 INFO L78 Accepts]: Start accepts. Automaton has 15796 states and 16094 transitions. Word has length 1980 [2024-11-19 18:26:52,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:26:52,611 INFO L471 AbstractCegarLoop]: Abstraction has 15796 states and 16094 transitions. [2024-11-19 18:26:52,611 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 209.0) internal successors, (627), 3 states have internal predecessors, (627), 0 states have call successors, (0), 0 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 18:26:52,611 INFO L276 IsEmpty]: Start isEmpty. Operand 15796 states and 16094 transitions. [2024-11-19 18:26:52,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2012 [2024-11-19 18:26:52,633 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:26:52,634 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 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] [2024-11-19 18:26:52,642 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-19 18:26:52,834 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 18:26:52,835 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:26:52,835 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:26:52,835 INFO L85 PathProgramCache]: Analyzing trace with hash -195337288, now seen corresponding path program 1 times [2024-11-19 18:26:52,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:26:52,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888890212] [2024-11-19 18:26:52,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:26:52,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:26:53,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:26:56,062 INFO L134 CoverageAnalysis]: Checked inductivity of 7938 backedges. 3891 proven. 523 refuted. 0 times theorem prover too weak. 3524 trivial. 0 not checked. [2024-11-19 18:26:56,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:26:56,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1888890212] [2024-11-19 18:26:56,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1888890212] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 18:26:56,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1170027696] [2024-11-19 18:26:56,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:26:56,063 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 18:26:56,064 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 18:26:56,066 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 18:26:56,067 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-19 18:26:56,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:26:56,461 INFO L255 TraceCheckSpWp]: Trace formula consists of 2304 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-19 18:26:56,477 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 18:26:59,656 INFO L134 CoverageAnalysis]: Checked inductivity of 7938 backedges. 6169 proven. 157 refuted. 0 times theorem prover too weak. 1612 trivial. 0 not checked. [2024-11-19 18:26:59,657 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 18:27:02,708 INFO L134 CoverageAnalysis]: Checked inductivity of 7938 backedges. 5905 proven. 421 refuted. 0 times theorem prover too weak. 1612 trivial. 0 not checked. [2024-11-19 18:27:02,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1170027696] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 18:27:02,709 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 18:27:02,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 13 [2024-11-19 18:27:02,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310175404] [2024-11-19 18:27:02,711 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 18:27:02,713 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-19 18:27:02,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:27:02,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-19 18:27:02,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2024-11-19 18:27:02,715 INFO L87 Difference]: Start difference. First operand 15796 states and 16094 transitions. Second operand has 13 states, 13 states have (on average 143.92307692307693) internal successors, (1871), 13 states have internal predecessors, (1871), 0 states have call successors, (0), 0 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 18:27:06,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:27:06,647 INFO L93 Difference]: Finished difference Result 31929 states and 32535 transitions. [2024-11-19 18:27:06,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-19 18:27:06,648 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 143.92307692307693) internal successors, (1871), 13 states have internal predecessors, (1871), 0 states have call successors, (0), 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 2011 [2024-11-19 18:27:06,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:27:06,664 INFO L225 Difference]: With dead ends: 31929 [2024-11-19 18:27:06,664 INFO L226 Difference]: Without dead ends: 16793 [2024-11-19 18:27:06,675 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4036 GetRequests, 4020 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=235, Unknown=0, NotChecked=0, Total=306 [2024-11-19 18:27:06,675 INFO L432 NwaCegarLoop]: 50 mSDtfsCounter, 1158 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 12303 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1158 SdHoareTripleChecker+Valid, 190 SdHoareTripleChecker+Invalid, 12347 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 12303 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2024-11-19 18:27:06,675 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1158 Valid, 190 Invalid, 12347 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 12303 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2024-11-19 18:27:06,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16793 states. [2024-11-19 18:27:06,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16793 to 15796. [2024-11-19 18:27:06,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15796 states, 15795 states have (on average 1.0184235517568851) internal successors, (16086), 15795 states have internal predecessors, (16086), 0 states have call successors, (0), 0 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 18:27:06,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15796 states to 15796 states and 16086 transitions. [2024-11-19 18:27:06,801 INFO L78 Accepts]: Start accepts. Automaton has 15796 states and 16086 transitions. Word has length 2011 [2024-11-19 18:27:06,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:27:06,801 INFO L471 AbstractCegarLoop]: Abstraction has 15796 states and 16086 transitions. [2024-11-19 18:27:06,802 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 143.92307692307693) internal successors, (1871), 13 states have internal predecessors, (1871), 0 states have call successors, (0), 0 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 18:27:06,802 INFO L276 IsEmpty]: Start isEmpty. Operand 15796 states and 16086 transitions. [2024-11-19 18:27:06,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2207 [2024-11-19 18:27:06,827 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:27:06,828 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 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] [2024-11-19 18:27:06,836 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-19 18:27:07,028 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 18:27:07,029 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:27:07,029 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:27:07,029 INFO L85 PathProgramCache]: Analyzing trace with hash -463384000, now seen corresponding path program 1 times [2024-11-19 18:27:07,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:27:07,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578698243] [2024-11-19 18:27:07,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:27:07,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:27:07,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:27:09,251 INFO L134 CoverageAnalysis]: Checked inductivity of 10280 backedges. 7530 proven. 78 refuted. 0 times theorem prover too weak. 2672 trivial. 0 not checked. [2024-11-19 18:27:09,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:27:09,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578698243] [2024-11-19 18:27:09,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1578698243] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 18:27:09,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1312818626] [2024-11-19 18:27:09,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:27:09,252 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 18:27:09,252 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 18:27:09,254 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 18:27:09,255 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-19 18:27:09,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:27:09,661 INFO L255 TraceCheckSpWp]: Trace formula consists of 2541 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-19 18:27:09,677 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 18:27:09,905 INFO L134 CoverageAnalysis]: Checked inductivity of 10280 backedges. 3455 proven. 0 refuted. 0 times theorem prover too weak. 6825 trivial. 0 not checked. [2024-11-19 18:27:09,906 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 18:27:09,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1312818626] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 18:27:09,906 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 18:27:09,906 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-11-19 18:27:09,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136404739] [2024-11-19 18:27:09,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 18:27:09,908 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 18:27:09,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:27:09,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 18:27:09,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-19 18:27:09,908 INFO L87 Difference]: Start difference. First operand 15796 states and 16086 transitions. Second operand has 3 states, 3 states have (on average 217.0) internal successors, (651), 3 states have internal predecessors, (651), 0 states have call successors, (0), 0 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 18:27:10,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:27:10,568 INFO L93 Difference]: Finished difference Result 33893 states and 34520 transitions. [2024-11-19 18:27:10,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 18:27:10,569 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 217.0) internal successors, (651), 3 states have internal predecessors, (651), 0 states have call successors, (0), 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 2206 [2024-11-19 18:27:10,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:27:10,586 INFO L225 Difference]: With dead ends: 33893 [2024-11-19 18:27:10,586 INFO L226 Difference]: Without dead ends: 18757 [2024-11-19 18:27:10,596 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2211 GetRequests, 2206 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-19 18:27:10,597 INFO L432 NwaCegarLoop]: 43 mSDtfsCounter, 182 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 766 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 182 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 849 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 766 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-19 18:27:10,597 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [182 Valid, 47 Invalid, 849 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 766 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-19 18:27:10,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18757 states. [2024-11-19 18:27:10,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18757 to 16454. [2024-11-19 18:27:10,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16454 states, 16453 states have (on average 1.0179906400048624) internal successors, (16749), 16453 states have internal predecessors, (16749), 0 states have call successors, (0), 0 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 18:27:10,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16454 states to 16454 states and 16749 transitions. [2024-11-19 18:27:10,723 INFO L78 Accepts]: Start accepts. Automaton has 16454 states and 16749 transitions. Word has length 2206 [2024-11-19 18:27:10,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:27:10,724 INFO L471 AbstractCegarLoop]: Abstraction has 16454 states and 16749 transitions. [2024-11-19 18:27:10,724 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 217.0) internal successors, (651), 3 states have internal predecessors, (651), 0 states have call successors, (0), 0 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 18:27:10,724 INFO L276 IsEmpty]: Start isEmpty. Operand 16454 states and 16749 transitions. [2024-11-19 18:27:10,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2273 [2024-11-19 18:27:10,788 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:27:10,789 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2024-11-19 18:27:10,798 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-19 18:27:10,989 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-11-19 18:27:10,990 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:27:10,991 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:27:10,991 INFO L85 PathProgramCache]: Analyzing trace with hash -1317483707, now seen corresponding path program 1 times [2024-11-19 18:27:10,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:27:10,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [229576555] [2024-11-19 18:27:10,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:27:10,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:27:11,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:27:13,174 INFO L134 CoverageAnalysis]: Checked inductivity of 10584 backedges. 7715 proven. 78 refuted. 0 times theorem prover too weak. 2791 trivial. 0 not checked. [2024-11-19 18:27:13,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:27:13,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [229576555] [2024-11-19 18:27:13,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [229576555] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 18:27:13,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1387390009] [2024-11-19 18:27:13,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:27:13,175 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 18:27:13,175 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 18:27:13,177 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 18:27:13,178 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-19 18:27:13,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:27:13,578 INFO L255 TraceCheckSpWp]: Trace formula consists of 2607 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-19 18:27:13,591 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 18:27:14,009 INFO L134 CoverageAnalysis]: Checked inductivity of 10584 backedges. 5977 proven. 0 refuted. 0 times theorem prover too weak. 4607 trivial. 0 not checked. [2024-11-19 18:27:14,009 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 18:27:14,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1387390009] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 18:27:14,010 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 18:27:14,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-11-19 18:27:14,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399635409] [2024-11-19 18:27:14,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 18:27:14,011 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 18:27:14,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:27:14,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 18:27:14,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-19 18:27:14,012 INFO L87 Difference]: Start difference. First operand 16454 states and 16749 transitions. Second operand has 3 states, 3 states have (on average 201.66666666666666) internal successors, (605), 3 states have internal predecessors, (605), 0 states have call successors, (0), 0 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 18:27:14,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:27:14,648 INFO L93 Difference]: Finished difference Result 34222 states and 34830 transitions. [2024-11-19 18:27:14,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 18:27:14,648 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 201.66666666666666) internal successors, (605), 3 states have internal predecessors, (605), 0 states have call successors, (0), 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 2272 [2024-11-19 18:27:14,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:27:14,665 INFO L225 Difference]: With dead ends: 34222 [2024-11-19 18:27:14,665 INFO L226 Difference]: Without dead ends: 18428 [2024-11-19 18:27:14,675 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2277 GetRequests, 2272 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-19 18:27:14,675 INFO L432 NwaCegarLoop]: 413 mSDtfsCounter, 253 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 757 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 253 SdHoareTripleChecker+Valid, 419 SdHoareTripleChecker+Invalid, 778 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 757 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-19 18:27:14,676 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [253 Valid, 419 Invalid, 778 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 757 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-19 18:27:14,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18428 states. [2024-11-19 18:27:14,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18428 to 17770. [2024-11-19 18:27:14,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17770 states, 17769 states have (on average 1.0167707805729078) internal successors, (18067), 17769 states have internal predecessors, (18067), 0 states have call successors, (0), 0 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 18:27:14,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17770 states to 17770 states and 18067 transitions. [2024-11-19 18:27:14,817 INFO L78 Accepts]: Start accepts. Automaton has 17770 states and 18067 transitions. Word has length 2272 [2024-11-19 18:27:14,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:27:14,818 INFO L471 AbstractCegarLoop]: Abstraction has 17770 states and 18067 transitions. [2024-11-19 18:27:14,818 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 201.66666666666666) internal successors, (605), 3 states have internal predecessors, (605), 0 states have call successors, (0), 0 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 18:27:14,818 INFO L276 IsEmpty]: Start isEmpty. Operand 17770 states and 18067 transitions. [2024-11-19 18:27:14,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2366 [2024-11-19 18:27:14,846 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:27:14,846 INFO L215 NwaCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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 18:27:14,855 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-19 18:27:15,047 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 18:27:15,047 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:27:15,048 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:27:15,048 INFO L85 PathProgramCache]: Analyzing trace with hash -1834718104, now seen corresponding path program 1 times [2024-11-19 18:27:15,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:27:15,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115163526] [2024-11-19 18:27:15,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:27:15,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:27:15,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:27:17,422 INFO L134 CoverageAnalysis]: Checked inductivity of 10772 backedges. 7650 proven. 140 refuted. 0 times theorem prover too weak. 2982 trivial. 0 not checked. [2024-11-19 18:27:17,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:27:17,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115163526] [2024-11-19 18:27:17,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [115163526] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 18:27:17,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1689420426] [2024-11-19 18:27:17,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:27:17,423 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 18:27:17,423 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 18:27:17,425 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 18:27:17,426 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-19 18:27:17,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:27:17,848 INFO L255 TraceCheckSpWp]: Trace formula consists of 2676 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-19 18:27:17,865 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 18:27:25,549 INFO L134 CoverageAnalysis]: Checked inductivity of 10772 backedges. 7082 proven. 67 refuted. 0 times theorem prover too weak. 3623 trivial. 0 not checked. [2024-11-19 18:27:25,551 INFO L311 TraceCheckSpWp]: Computing backward predicates...