./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/Problem13_label16.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4a390ef5 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/Problem13_label16.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 8b5d267cd1e473b445c52ec06f60f3c8a73f12a2c5a7f8cdb18f8745b90aa156 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4a390ef-m [2024-10-23 21:11:25,187 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-23 21:11:25,242 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-23 21:11:25,247 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-23 21:11:25,248 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-23 21:11:25,273 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-23 21:11:25,274 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-23 21:11:25,274 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-23 21:11:25,275 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-23 21:11:25,277 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-23 21:11:25,277 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-23 21:11:25,278 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-23 21:11:25,278 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-23 21:11:25,278 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-23 21:11:25,279 INFO L153 SettingsManager]: * Use SBE=true [2024-10-23 21:11:25,279 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-23 21:11:25,280 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-23 21:11:25,281 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-23 21:11:25,281 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-23 21:11:25,281 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-23 21:11:25,281 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-23 21:11:25,282 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-23 21:11:25,282 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-23 21:11:25,282 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-23 21:11:25,282 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-23 21:11:25,282 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-23 21:11:25,282 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-23 21:11:25,283 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-23 21:11:25,283 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-23 21:11:25,283 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-23 21:11:25,283 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-23 21:11:25,283 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-23 21:11:25,284 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-23 21:11:25,284 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-23 21:11:25,284 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-23 21:11:25,284 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-23 21:11:25,284 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-23 21:11:25,284 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-23 21:11:25,285 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-23 21:11:25,285 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-23 21:11:25,285 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-23 21:11:25,289 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-23 21:11:25,290 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8b5d267cd1e473b445c52ec06f60f3c8a73f12a2c5a7f8cdb18f8745b90aa156 [2024-10-23 21:11:25,480 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-23 21:11:25,498 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-23 21:11:25,500 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-23 21:11:25,501 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-23 21:11:25,501 INFO L274 PluginConnector]: CDTParser initialized [2024-10-23 21:11:25,502 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem13_label16.c [2024-10-23 21:11:26,683 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-23 21:11:27,095 INFO L384 CDTParser]: Found 1 translation units. [2024-10-23 21:11:27,096 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem13_label16.c [2024-10-23 21:11:27,119 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/27f56d6a4/f145cce3d42b4ae7b80aa798962b4b93/FLAG83306f33d [2024-10-23 21:11:27,134 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/27f56d6a4/f145cce3d42b4ae7b80aa798962b4b93 [2024-10-23 21:11:27,137 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-23 21:11:27,138 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-23 21:11:27,140 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-23 21:11:27,140 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-23 21:11:27,145 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-23 21:11:27,146 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 09:11:27" (1/1) ... [2024-10-23 21:11:27,146 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55d86fa5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:11:27, skipping insertion in model container [2024-10-23 21:11:27,147 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 09:11:27" (1/1) ... [2024-10-23 21:11:27,227 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-23 21:11:27,422 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem13_label16.c[3388,3401] [2024-10-23 21:11:28,093 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-23 21:11:28,116 INFO L200 MainTranslator]: Completed pre-run [2024-10-23 21:11:28,151 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem13_label16.c[3388,3401] [2024-10-23 21:11:28,496 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-23 21:11:28,515 INFO L204 MainTranslator]: Completed translation [2024-10-23 21:11:28,516 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:11:28 WrapperNode [2024-10-23 21:11:28,516 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-23 21:11:28,517 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-23 21:11:28,517 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-23 21:11:28,517 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-23 21:11:28,522 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:11:28" (1/1) ... [2024-10-23 21:11:28,568 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:11:28" (1/1) ... [2024-10-23 21:11:28,934 INFO L138 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 5587 [2024-10-23 21:11:28,934 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-23 21:11:28,935 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-23 21:11:28,935 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-23 21:11:28,935 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-23 21:11:28,943 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:11:28" (1/1) ... [2024-10-23 21:11:28,943 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:11:28" (1/1) ... [2024-10-23 21:11:29,014 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:11:28" (1/1) ... [2024-10-23 21:11:29,194 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]. [2024-10-23 21:11:29,195 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:11:28" (1/1) ... [2024-10-23 21:11:29,195 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:11:28" (1/1) ... [2024-10-23 21:11:29,327 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:11:28" (1/1) ... [2024-10-23 21:11:29,345 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:11:28" (1/1) ... [2024-10-23 21:11:29,372 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:11:28" (1/1) ... [2024-10-23 21:11:29,389 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:11:28" (1/1) ... [2024-10-23 21:11:29,434 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-23 21:11:29,435 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-23 21:11:29,435 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-23 21:11:29,435 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-23 21:11:29,436 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:11:28" (1/1) ... [2024-10-23 21:11:29,440 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-23 21:11:29,447 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 21:11:29,460 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-23 21:11:29,469 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-23 21:11:29,506 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-23 21:11:29,506 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-23 21:11:29,506 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-23 21:11:29,506 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-23 21:11:29,567 INFO L238 CfgBuilder]: Building ICFG [2024-10-23 21:11:29,569 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-23 21:11:33,915 INFO L? ?]: Removed 738 outVars from TransFormulas that were not future-live. [2024-10-23 21:11:33,915 INFO L287 CfgBuilder]: Performing block encoding [2024-10-23 21:11:33,968 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-23 21:11:33,968 INFO L314 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-23 21:11:33,969 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 09:11:33 BoogieIcfgContainer [2024-10-23 21:11:33,969 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-23 21:11:33,972 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-23 21:11:33,972 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-23 21:11:33,975 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-23 21:11:33,975 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 09:11:27" (1/3) ... [2024-10-23 21:11:33,975 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77cef9e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 09:11:33, skipping insertion in model container [2024-10-23 21:11:33,976 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:11:28" (2/3) ... [2024-10-23 21:11:33,976 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77cef9e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 09:11:33, skipping insertion in model container [2024-10-23 21:11:33,976 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 09:11:33" (3/3) ... [2024-10-23 21:11:33,977 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label16.c [2024-10-23 21:11:33,991 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-23 21:11:33,991 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-23 21:11:34,058 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-23 21:11:34,065 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;@6116d242, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-23 21:11:34,066 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-23 21:11:34,073 INFO L276 IsEmpty]: Start isEmpty. Operand has 1036 states, 1034 states have (on average 1.877176015473888) internal successors, (1941), 1035 states have internal predecessors, (1941), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:11:34,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-10-23 21:11:34,078 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:11:34,080 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:11:34,080 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:11:34,084 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:11:34,084 INFO L85 PathProgramCache]: Analyzing trace with hash 1493496235, now seen corresponding path program 1 times [2024-10-23 21:11:34,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:11:34,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327612825] [2024-10-23 21:11:34,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:11:34,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:11:34,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:11:34,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 21:11:34,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:11:34,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327612825] [2024-10-23 21:11:34,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [327612825] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:11:34,219 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:11:34,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-23 21:11:34,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964978335] [2024-10-23 21:11:34,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:11:34,224 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-23 21:11:34,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:11:34,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-23 21:11:34,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-23 21:11:34,246 INFO L87 Difference]: Start difference. First operand has 1036 states, 1034 states have (on average 1.877176015473888) internal successors, (1941), 1035 states have internal predecessors, (1941), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:11:34,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:11:34,330 INFO L93 Difference]: Finished difference Result 2071 states and 3881 transitions. [2024-10-23 21:11:34,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-23 21:11:34,333 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2024-10-23 21:11:34,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:11:34,347 INFO L225 Difference]: With dead ends: 2071 [2024-10-23 21:11:34,348 INFO L226 Difference]: Without dead ends: 1034 [2024-10-23 21:11:34,352 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-23 21:11:34,354 INFO L432 NwaCegarLoop]: 1876 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1876 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-23 21:11:34,355 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1876 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-23 21:11:34,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1034 states. [2024-10-23 21:11:34,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1034 to 1034. [2024-10-23 21:11:34,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1034 states, 1033 states have (on average 1.8160696999031947) internal successors, (1876), 1033 states have internal predecessors, (1876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:11:34,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1034 states to 1034 states and 1876 transitions. [2024-10-23 21:11:34,419 INFO L78 Accepts]: Start accepts. Automaton has 1034 states and 1876 transitions. Word has length 21 [2024-10-23 21:11:34,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:11:34,420 INFO L471 AbstractCegarLoop]: Abstraction has 1034 states and 1876 transitions. [2024-10-23 21:11:34,420 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:11:34,420 INFO L276 IsEmpty]: Start isEmpty. Operand 1034 states and 1876 transitions. [2024-10-23 21:11:34,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-10-23 21:11:34,421 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:11:34,421 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:11:34,421 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-23 21:11:34,421 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:11:34,421 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:11:34,422 INFO L85 PathProgramCache]: Analyzing trace with hash 1014620499, now seen corresponding path program 1 times [2024-10-23 21:11:34,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:11:34,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772923895] [2024-10-23 21:11:34,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:11:34,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:11:34,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:11:34,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 21:11:34,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:11:34,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772923895] [2024-10-23 21:11:34,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1772923895] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:11:34,530 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:11:34,530 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-23 21:11:34,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969694470] [2024-10-23 21:11:34,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:11:34,531 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:11:34,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:11:34,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:11:34,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:11:34,532 INFO L87 Difference]: Start difference. First operand 1034 states and 1876 transitions. Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 2 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:11:37,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:11:37,706 INFO L93 Difference]: Finished difference Result 2905 states and 5325 transitions. [2024-10-23 21:11:37,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:11:37,707 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 2 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2024-10-23 21:11:37,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:11:37,712 INFO L225 Difference]: With dead ends: 2905 [2024-10-23 21:11:37,713 INFO L226 Difference]: Without dead ends: 1872 [2024-10-23 21:11:37,715 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 [2024-10-23 21:11:37,716 INFO L432 NwaCegarLoop]: 939 mSDtfsCounter, 867 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 2446 mSolverCounterSat, 798 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 867 SdHoareTripleChecker+Valid, 1090 SdHoareTripleChecker+Invalid, 3244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 798 IncrementalHoareTripleChecker+Valid, 2446 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2024-10-23 21:11:37,717 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [867 Valid, 1090 Invalid, 3244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [798 Valid, 2446 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2024-10-23 21:11:37,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1872 states. [2024-10-23 21:11:37,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1872 to 1858. [2024-10-23 21:11:37,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1858 states, 1857 states have (on average 1.5444264943457189) internal successors, (2868), 1857 states have internal predecessors, (2868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:11:37,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1858 states to 1858 states and 2868 transitions. [2024-10-23 21:11:37,754 INFO L78 Accepts]: Start accepts. Automaton has 1858 states and 2868 transitions. Word has length 21 [2024-10-23 21:11:37,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:11:37,754 INFO L471 AbstractCegarLoop]: Abstraction has 1858 states and 2868 transitions. [2024-10-23 21:11:37,755 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 2 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:11:37,755 INFO L276 IsEmpty]: Start isEmpty. Operand 1858 states and 2868 transitions. [2024-10-23 21:11:37,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2024-10-23 21:11:37,760 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:11:37,760 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-23 21:11:37,761 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-23 21:11:37,761 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:11:37,762 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:11:37,763 INFO L85 PathProgramCache]: Analyzing trace with hash 1785583294, now seen corresponding path program 1 times [2024-10-23 21:11:37,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:11:37,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41399912] [2024-10-23 21:11:37,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:11:37,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:11:37,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:11:38,002 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 21:11:38,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:11:38,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41399912] [2024-10-23 21:11:38,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [41399912] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:11:38,003 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:11:38,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-23 21:11:38,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679848325] [2024-10-23 21:11:38,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:11:38,004 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:11:38,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:11:38,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:11:38,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:11:38,005 INFO L87 Difference]: Start difference. First operand 1858 states and 2868 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 2 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:11:41,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:11:41,520 INFO L93 Difference]: Finished difference Result 5316 states and 8228 transitions. [2024-10-23 21:11:41,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:11:41,520 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 2 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2024-10-23 21:11:41,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:11:41,530 INFO L225 Difference]: With dead ends: 5316 [2024-10-23 21:11:41,530 INFO L226 Difference]: Without dead ends: 3459 [2024-10-23 21:11:41,533 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 [2024-10-23 21:11:41,534 INFO L432 NwaCegarLoop]: 1037 mSDtfsCounter, 826 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 2403 mSolverCounterSat, 877 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 826 SdHoareTripleChecker+Valid, 1190 SdHoareTripleChecker+Invalid, 3280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 877 IncrementalHoareTripleChecker+Valid, 2403 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2024-10-23 21:11:41,534 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [826 Valid, 1190 Invalid, 3280 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [877 Valid, 2403 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2024-10-23 21:11:41,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3459 states. [2024-10-23 21:11:41,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3459 to 3458. [2024-10-23 21:11:41,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3458 states, 3457 states have (on average 1.380676887474689) internal successors, (4773), 3457 states have internal predecessors, (4773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:11:41,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3458 states to 3458 states and 4773 transitions. [2024-10-23 21:11:41,584 INFO L78 Accepts]: Start accepts. Automaton has 3458 states and 4773 transitions. Word has length 93 [2024-10-23 21:11:41,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:11:41,584 INFO L471 AbstractCegarLoop]: Abstraction has 3458 states and 4773 transitions. [2024-10-23 21:11:41,585 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 2 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:11:41,585 INFO L276 IsEmpty]: Start isEmpty. Operand 3458 states and 4773 transitions. [2024-10-23 21:11:41,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-10-23 21:11:41,586 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:11:41,586 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-23 21:11:41,586 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-23 21:11:41,586 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:11:41,587 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:11:41,587 INFO L85 PathProgramCache]: Analyzing trace with hash -280279371, now seen corresponding path program 1 times [2024-10-23 21:11:41,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:11:41,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1711913724] [2024-10-23 21:11:41,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:11:41,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:11:41,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:11:41,908 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 21:11:41,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:11:41,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1711913724] [2024-10-23 21:11:41,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1711913724] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:11:41,910 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:11:41,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:11:41,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039479922] [2024-10-23 21:11:41,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:11:41,910 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-23 21:11:41,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:11:41,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-23 21:11:41,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-23 21:11:41,912 INFO L87 Difference]: Start difference. First operand 3458 states and 4773 transitions. Second operand has 4 states, 4 states have (on average 26.75) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:11:45,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:11:45,770 INFO L93 Difference]: Finished difference Result 10869 states and 14767 transitions. [2024-10-23 21:11:45,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-23 21:11:45,771 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.75) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 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 107 [2024-10-23 21:11:45,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:11:45,792 INFO L225 Difference]: With dead ends: 10869 [2024-10-23 21:11:45,793 INFO L226 Difference]: Without dead ends: 7412 [2024-10-23 21:11:45,798 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 [2024-10-23 21:11:45,798 INFO L432 NwaCegarLoop]: 707 mSDtfsCounter, 2581 mSDsluCounter, 294 mSDsCounter, 0 mSdLazyCounter, 4118 mSolverCounterSat, 831 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2581 SdHoareTripleChecker+Valid, 1001 SdHoareTripleChecker+Invalid, 4949 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 831 IncrementalHoareTripleChecker+Valid, 4118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2024-10-23 21:11:45,799 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2581 Valid, 1001 Invalid, 4949 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [831 Valid, 4118 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2024-10-23 21:11:45,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7412 states. [2024-10-23 21:11:45,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7412 to 7411. [2024-10-23 21:11:45,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7411 states, 7410 states have (on average 1.269905533063428) internal successors, (9410), 7410 states have internal predecessors, (9410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:11:45,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7411 states to 7411 states and 9410 transitions. [2024-10-23 21:11:45,885 INFO L78 Accepts]: Start accepts. Automaton has 7411 states and 9410 transitions. Word has length 107 [2024-10-23 21:11:45,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:11:45,886 INFO L471 AbstractCegarLoop]: Abstraction has 7411 states and 9410 transitions. [2024-10-23 21:11:45,886 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.75) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:11:45,886 INFO L276 IsEmpty]: Start isEmpty. Operand 7411 states and 9410 transitions. [2024-10-23 21:11:45,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2024-10-23 21:11:45,888 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:11:45,888 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:11:45,889 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-23 21:11:45,889 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:11:45,889 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:11:45,892 INFO L85 PathProgramCache]: Analyzing trace with hash 1400005433, now seen corresponding path program 1 times [2024-10-23 21:11:45,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:11:45,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723771001] [2024-10-23 21:11:45,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:11:45,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:11:45,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:11:46,107 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-10-23 21:11:46,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:11:46,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723771001] [2024-10-23 21:11:46,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [723771001] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:11:46,108 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:11:46,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-23 21:11:46,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3106199] [2024-10-23 21:11:46,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:11:46,109 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:11:46,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:11:46,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:11:46,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:11:46,110 INFO L87 Difference]: Start difference. First operand 7411 states and 9410 transitions. Second operand has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 2 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:11:49,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:11:49,192 INFO L93 Difference]: Finished difference Result 20354 states and 26250 transitions. [2024-10-23 21:11:49,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:11:49,192 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 2 states have internal predecessors, (119), 0 states have call successors, (0), 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 188 [2024-10-23 21:11:49,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:11:49,225 INFO L225 Difference]: With dead ends: 20354 [2024-10-23 21:11:49,225 INFO L226 Difference]: Without dead ends: 13731 [2024-10-23 21:11:49,234 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 [2024-10-23 21:11:49,235 INFO L432 NwaCegarLoop]: 848 mSDtfsCounter, 888 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 2576 mSolverCounterSat, 748 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 888 SdHoareTripleChecker+Valid, 976 SdHoareTripleChecker+Invalid, 3324 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 748 IncrementalHoareTripleChecker+Valid, 2576 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2024-10-23 21:11:49,235 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [888 Valid, 976 Invalid, 3324 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [748 Valid, 2576 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2024-10-23 21:11:49,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13731 states. [2024-10-23 21:11:49,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13731 to 12936. [2024-10-23 21:11:49,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12936 states, 12935 states have (on average 1.2152299961345188) internal successors, (15719), 12935 states have internal predecessors, (15719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:11:49,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12936 states to 12936 states and 15719 transitions. [2024-10-23 21:11:49,378 INFO L78 Accepts]: Start accepts. Automaton has 12936 states and 15719 transitions. Word has length 188 [2024-10-23 21:11:49,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:11:49,379 INFO L471 AbstractCegarLoop]: Abstraction has 12936 states and 15719 transitions. [2024-10-23 21:11:49,379 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 2 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:11:49,379 INFO L276 IsEmpty]: Start isEmpty. Operand 12936 states and 15719 transitions. [2024-10-23 21:11:49,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2024-10-23 21:11:49,381 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:11:49,382 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:11:49,382 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-23 21:11:49,382 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:11:49,382 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:11:49,383 INFO L85 PathProgramCache]: Analyzing trace with hash 245263337, now seen corresponding path program 1 times [2024-10-23 21:11:49,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:11:49,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416978684] [2024-10-23 21:11:49,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:11:49,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:11:49,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:11:49,534 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 134 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 21:11:49,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:11:49,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416978684] [2024-10-23 21:11:49,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1416978684] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:11:49,535 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:11:49,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:11:49,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905813973] [2024-10-23 21:11:49,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:11:49,536 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:11:49,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:11:49,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:11:49,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:11:49,537 INFO L87 Difference]: Start difference. First operand 12936 states and 15719 transitions. Second operand has 3 states, 3 states have (on average 73.33333333333333) internal successors, (220), 3 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:11:52,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:11:52,091 INFO L93 Difference]: Finished difference Result 31391 states and 39118 transitions. [2024-10-23 21:11:52,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:11:52,092 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 73.33333333333333) internal successors, (220), 3 states have internal predecessors, (220), 0 states have call successors, (0), 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 220 [2024-10-23 21:11:52,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:11:52,127 INFO L225 Difference]: With dead ends: 31391 [2024-10-23 21:11:52,127 INFO L226 Difference]: Without dead ends: 19243 [2024-10-23 21:11:52,136 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:11:52,138 INFO L432 NwaCegarLoop]: 807 mSDtfsCounter, 857 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 2382 mSolverCounterSat, 914 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 857 SdHoareTripleChecker+Valid, 924 SdHoareTripleChecker+Invalid, 3296 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 914 IncrementalHoareTripleChecker+Valid, 2382 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2024-10-23 21:11:52,139 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [857 Valid, 924 Invalid, 3296 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [914 Valid, 2382 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2024-10-23 21:11:52,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19243 states. [2024-10-23 21:11:52,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19243 to 18446. [2024-10-23 21:11:52,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18446 states, 18445 states have (on average 1.20243968555164) internal successors, (22179), 18445 states have internal predecessors, (22179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:11:52,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18446 states to 18446 states and 22179 transitions. [2024-10-23 21:11:52,307 INFO L78 Accepts]: Start accepts. Automaton has 18446 states and 22179 transitions. Word has length 220 [2024-10-23 21:11:52,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:11:52,308 INFO L471 AbstractCegarLoop]: Abstraction has 18446 states and 22179 transitions. [2024-10-23 21:11:52,308 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 73.33333333333333) internal successors, (220), 3 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:11:52,308 INFO L276 IsEmpty]: Start isEmpty. Operand 18446 states and 22179 transitions. [2024-10-23 21:11:52,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2024-10-23 21:11:52,312 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:11:52,313 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:11:52,313 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-23 21:11:52,313 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:11:52,313 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:11:52,314 INFO L85 PathProgramCache]: Analyzing trace with hash 4006641, now seen corresponding path program 1 times [2024-10-23 21:11:52,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:11:52,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [148681852] [2024-10-23 21:11:52,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:11:52,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:11:52,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:11:52,622 INFO L134 CoverageAnalysis]: Checked inductivity of 331 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2024-10-23 21:11:52,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:11:52,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [148681852] [2024-10-23 21:11:52,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [148681852] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:11:52,623 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:11:52,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:11:52,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265023220] [2024-10-23 21:11:52,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:11:52,623 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:11:52,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:11:52,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:11:52,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:11:52,624 INFO L87 Difference]: Start difference. First operand 18446 states and 22179 transitions. Second operand has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:11:55,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:11:55,855 INFO L93 Difference]: Finished difference Result 52771 states and 63783 transitions. [2024-10-23 21:11:55,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:11:55,855 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 309 [2024-10-23 21:11:55,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:11:55,909 INFO L225 Difference]: With dead ends: 52771 [2024-10-23 21:11:55,909 INFO L226 Difference]: Without dead ends: 35113 [2024-10-23 21:11:55,925 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:11:55,927 INFO L432 NwaCegarLoop]: 1698 mSDtfsCounter, 951 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 3129 mSolverCounterSat, 603 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 951 SdHoareTripleChecker+Valid, 1816 SdHoareTripleChecker+Invalid, 3732 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 603 IncrementalHoareTripleChecker+Valid, 3129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2024-10-23 21:11:55,927 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [951 Valid, 1816 Invalid, 3732 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [603 Valid, 3129 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2024-10-23 21:11:55,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35113 states. [2024-10-23 21:11:56,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35113 to 34273. [2024-10-23 21:11:56,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34273 states, 34272 states have (on average 1.1858951914098972) internal successors, (40643), 34272 states have internal predecessors, (40643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:11:56,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34273 states to 34273 states and 40643 transitions. [2024-10-23 21:11:56,284 INFO L78 Accepts]: Start accepts. Automaton has 34273 states and 40643 transitions. Word has length 309 [2024-10-23 21:11:56,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:11:56,285 INFO L471 AbstractCegarLoop]: Abstraction has 34273 states and 40643 transitions. [2024-10-23 21:11:56,285 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:11:56,285 INFO L276 IsEmpty]: Start isEmpty. Operand 34273 states and 40643 transitions. [2024-10-23 21:11:56,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2024-10-23 21:11:56,288 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:11:56,288 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:11:56,288 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-23 21:11:56,289 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:11:56,289 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:11:56,289 INFO L85 PathProgramCache]: Analyzing trace with hash 1616873581, now seen corresponding path program 1 times [2024-10-23 21:11:56,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:11:56,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158608032] [2024-10-23 21:11:56,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:11:56,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:11:56,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:11:56,507 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 315 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-10-23 21:11:56,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:11:56,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158608032] [2024-10-23 21:11:56,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1158608032] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:11:56,507 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:11:56,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:11:56,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519024570] [2024-10-23 21:11:56,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:11:56,509 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-23 21:11:56,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:11:56,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-23 21:11:56,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-23 21:11:56,510 INFO L87 Difference]: Start difference. First operand 34273 states and 40643 transitions. Second operand has 4 states, 4 states have (on average 72.5) internal successors, (290), 3 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:12:01,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:12:01,591 INFO L93 Difference]: Finished difference Result 108143 states and 129354 transitions. [2024-10-23 21:12:01,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-23 21:12:01,591 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 72.5) internal successors, (290), 3 states have internal predecessors, (290), 0 states have call successors, (0), 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 309 [2024-10-23 21:12:01,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:12:01,692 INFO L225 Difference]: With dead ends: 108143 [2024-10-23 21:12:01,692 INFO L226 Difference]: Without dead ends: 74658 [2024-10-23 21:12:01,722 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 [2024-10-23 21:12:01,723 INFO L432 NwaCegarLoop]: 594 mSDtfsCounter, 1737 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 6124 mSolverCounterSat, 1147 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1737 SdHoareTripleChecker+Valid, 795 SdHoareTripleChecker+Invalid, 7271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1147 IncrementalHoareTripleChecker+Valid, 6124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2024-10-23 21:12:01,724 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1737 Valid, 795 Invalid, 7271 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1147 Valid, 6124 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2024-10-23 21:12:01,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74658 states. [2024-10-23 21:12:02,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74658 to 74497. [2024-10-23 21:12:02,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74497 states, 74496 states have (on average 1.1708950816151202) internal successors, (87227), 74496 states have internal predecessors, (87227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:12:02,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74497 states to 74497 states and 87227 transitions. [2024-10-23 21:12:02,334 INFO L78 Accepts]: Start accepts. Automaton has 74497 states and 87227 transitions. Word has length 309 [2024-10-23 21:12:02,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:12:02,334 INFO L471 AbstractCegarLoop]: Abstraction has 74497 states and 87227 transitions. [2024-10-23 21:12:02,335 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 72.5) internal successors, (290), 3 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:12:02,335 INFO L276 IsEmpty]: Start isEmpty. Operand 74497 states and 87227 transitions. [2024-10-23 21:12:02,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 348 [2024-10-23 21:12:02,339 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:12:02,339 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-10-23 21:12:02,340 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-23 21:12:02,340 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:12:02,340 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:12:02,340 INFO L85 PathProgramCache]: Analyzing trace with hash -1945723768, now seen corresponding path program 1 times [2024-10-23 21:12:02,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:12:02,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776966412] [2024-10-23 21:12:02,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:12:02,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:12:02,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:12:02,833 INFO L134 CoverageAnalysis]: Checked inductivity of 361 backedges. 246 proven. 0 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2024-10-23 21:12:02,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:12:02,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776966412] [2024-10-23 21:12:02,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1776966412] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:12:02,834 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:12:02,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-23 21:12:02,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088044961] [2024-10-23 21:12:02,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:12:02,835 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:12:02,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:12:02,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:12:02,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:12:02,836 INFO L87 Difference]: Start difference. First operand 74497 states and 87227 transitions. Second operand has 3 states, 3 states have (on average 78.0) internal successors, (234), 2 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:12:06,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:12:06,086 INFO L93 Difference]: Finished difference Result 160033 states and 187016 transitions. [2024-10-23 21:12:06,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:12:06,086 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 78.0) internal successors, (234), 2 states have internal predecessors, (234), 0 states have call successors, (0), 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 [2024-10-23 21:12:06,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:12:06,188 INFO L225 Difference]: With dead ends: 160033 [2024-10-23 21:12:06,189 INFO L226 Difference]: Without dead ends: 86324 [2024-10-23 21:12:06,215 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 [2024-10-23 21:12:06,216 INFO L432 NwaCegarLoop]: 1018 mSDtfsCounter, 728 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 2706 mSolverCounterSat, 181 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 728 SdHoareTripleChecker+Valid, 1199 SdHoareTripleChecker+Invalid, 2887 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 181 IncrementalHoareTripleChecker+Valid, 2706 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2024-10-23 21:12:06,216 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [728 Valid, 1199 Invalid, 2887 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [181 Valid, 2706 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2024-10-23 21:12:06,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86324 states. [2024-10-23 21:12:06,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86324 to 86315. [2024-10-23 21:12:07,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86315 states, 86314 states have (on average 1.1568691058229257) internal successors, (99854), 86314 states have internal predecessors, (99854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:12:07,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86315 states to 86315 states and 99854 transitions. [2024-10-23 21:12:07,350 INFO L78 Accepts]: Start accepts. Automaton has 86315 states and 99854 transitions. Word has length 347 [2024-10-23 21:12:07,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:12:07,350 INFO L471 AbstractCegarLoop]: Abstraction has 86315 states and 99854 transitions. [2024-10-23 21:12:07,350 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 78.0) internal successors, (234), 2 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:12:07,350 INFO L276 IsEmpty]: Start isEmpty. Operand 86315 states and 99854 transitions. [2024-10-23 21:12:07,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 377 [2024-10-23 21:12:07,357 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:12:07,357 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:12:07,357 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-23 21:12:07,358 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:12:07,358 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:12:07,358 INFO L85 PathProgramCache]: Analyzing trace with hash 1402159424, now seen corresponding path program 1 times [2024-10-23 21:12:07,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:12:07,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [58908112] [2024-10-23 21:12:07,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:12:07,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:12:07,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:12:08,640 INFO L134 CoverageAnalysis]: Checked inductivity of 395 backedges. 262 proven. 113 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-10-23 21:12:08,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:12:08,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [58908112] [2024-10-23 21:12:08,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [58908112] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 21:12:08,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [82227823] [2024-10-23 21:12:08,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:12:08,641 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 21:12:08,641 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 21:12:08,642 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-23 21:12:08,643 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-23 21:12:08,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:12:08,829 INFO L255 TraceCheckSpWp]: Trace formula consists of 506 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-23 21:12:08,840 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 21:12:08,983 INFO L134 CoverageAnalysis]: Checked inductivity of 395 backedges. 262 proven. 0 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2024-10-23 21:12:08,983 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-23 21:12:08,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [82227823] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:12:08,984 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-23 21:12:08,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2024-10-23 21:12:08,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438586660] [2024-10-23 21:12:08,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:12:08,985 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:12:08,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:12:08,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:12:08,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-10-23 21:12:08,985 INFO L87 Difference]: Start difference. First operand 86315 states and 99854 transitions. Second operand has 3 states, 3 states have (on average 81.66666666666667) internal successors, (245), 3 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:12:11,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:12:11,727 INFO L93 Difference]: Finished difference Result 171839 states and 198913 transitions. [2024-10-23 21:12:11,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:12:11,727 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 81.66666666666667) internal successors, (245), 3 states have internal predecessors, (245), 0 states have call successors, (0), 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 376 [2024-10-23 21:12:11,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:12:11,824 INFO L225 Difference]: With dead ends: 171839 [2024-10-23 21:12:11,824 INFO L226 Difference]: Without dead ends: 86312 [2024-10-23 21:12:11,861 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 382 GetRequests, 375 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-10-23 21:12:11,861 INFO L432 NwaCegarLoop]: 1362 mSDtfsCounter, 1094 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 2468 mSolverCounterSat, 451 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1094 SdHoareTripleChecker+Valid, 1443 SdHoareTripleChecker+Invalid, 2919 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 451 IncrementalHoareTripleChecker+Valid, 2468 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-10-23 21:12:11,862 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1094 Valid, 1443 Invalid, 2919 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [451 Valid, 2468 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-10-23 21:12:11,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86312 states. [2024-10-23 21:12:12,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86312 to 86310. [2024-10-23 21:12:12,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86310 states, 86309 states have (on average 1.1199411417117566) internal successors, (96661), 86309 states have internal predecessors, (96661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:12:12,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86310 states to 86310 states and 96661 transitions. [2024-10-23 21:12:12,845 INFO L78 Accepts]: Start accepts. Automaton has 86310 states and 96661 transitions. Word has length 376 [2024-10-23 21:12:12,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:12:12,845 INFO L471 AbstractCegarLoop]: Abstraction has 86310 states and 96661 transitions. [2024-10-23 21:12:12,846 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 81.66666666666667) internal successors, (245), 3 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:12:12,846 INFO L276 IsEmpty]: Start isEmpty. Operand 86310 states and 96661 transitions. [2024-10-23 21:12:12,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 378 [2024-10-23 21:12:12,849 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:12:12,850 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2024-10-23 21:12:12,863 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-10-23 21:12:13,050 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,SelfDestructingSolverStorable9 [2024-10-23 21:12:13,051 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:12:13,052 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:12:13,052 INFO L85 PathProgramCache]: Analyzing trace with hash -2139383432, now seen corresponding path program 1 times [2024-10-23 21:12:13,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:12:13,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598647699] [2024-10-23 21:12:13,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:12:13,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:12:13,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:12:13,425 INFO L134 CoverageAnalysis]: Checked inductivity of 569 backedges. 408 proven. 0 refuted. 0 times theorem prover too weak. 161 trivial. 0 not checked. [2024-10-23 21:12:13,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:12:13,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [598647699] [2024-10-23 21:12:13,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [598647699] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:12:13,425 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:12:13,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:12:13,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672138046] [2024-10-23 21:12:13,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:12:13,426 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:12:13,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:12:13,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:12:13,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:12:13,427 INFO L87 Difference]: Start difference. First operand 86310 states and 96661 transitions. Second operand has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:12:16,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:12:16,922 INFO L93 Difference]: Finished difference Result 198607 states and 224798 transitions. [2024-10-23 21:12:16,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:12:16,923 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 377 [2024-10-23 21:12:16,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:12:17,166 INFO L225 Difference]: With dead ends: 198607 [2024-10-23 21:12:17,166 INFO L226 Difference]: Without dead ends: 113085 [2024-10-23 21:12:17,195 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:12:17,195 INFO L432 NwaCegarLoop]: 826 mSDtfsCounter, 898 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 2414 mSolverCounterSat, 946 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 898 SdHoareTripleChecker+Valid, 911 SdHoareTripleChecker+Invalid, 3360 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 946 IncrementalHoareTripleChecker+Valid, 2414 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2024-10-23 21:12:17,196 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [898 Valid, 911 Invalid, 3360 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [946 Valid, 2414 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2024-10-23 21:12:17,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113085 states. [2024-10-23 21:12:18,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113085 to 111490. [2024-10-23 21:12:18,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111490 states, 111489 states have (on average 1.1249988788131564) internal successors, (125425), 111489 states have internal predecessors, (125425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:12:18,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111490 states to 111490 states and 125425 transitions. [2024-10-23 21:12:18,415 INFO L78 Accepts]: Start accepts. Automaton has 111490 states and 125425 transitions. Word has length 377 [2024-10-23 21:12:18,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:12:18,415 INFO L471 AbstractCegarLoop]: Abstraction has 111490 states and 125425 transitions. [2024-10-23 21:12:18,416 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:12:18,416 INFO L276 IsEmpty]: Start isEmpty. Operand 111490 states and 125425 transitions. [2024-10-23 21:12:18,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 452 [2024-10-23 21:12:18,427 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:12:18,427 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:12:18,428 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-23 21:12:18,428 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:12:18,428 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:12:18,428 INFO L85 PathProgramCache]: Analyzing trace with hash 1225614291, now seen corresponding path program 1 times [2024-10-23 21:12:18,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:12:18,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875153136] [2024-10-23 21:12:18,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:12:18,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:12:18,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:12:19,646 INFO L134 CoverageAnalysis]: Checked inductivity of 410 backedges. 280 proven. 110 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-10-23 21:12:19,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:12:19,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875153136] [2024-10-23 21:12:19,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [875153136] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 21:12:19,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1834294816] [2024-10-23 21:12:19,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:12:19,647 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 21:12:19,647 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 21:12:19,648 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-23 21:12:19,649 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-23 21:12:19,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:12:19,770 INFO L255 TraceCheckSpWp]: Trace formula consists of 586 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-23 21:12:19,775 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 21:12:19,937 INFO L134 CoverageAnalysis]: Checked inductivity of 410 backedges. 297 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2024-10-23 21:12:19,938 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-23 21:12:19,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1834294816] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:12:19,938 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-23 21:12:19,938 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2024-10-23 21:12:19,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595961463] [2024-10-23 21:12:19,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:12:19,939 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:12:19,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:12:19,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:12:19,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-10-23 21:12:19,940 INFO L87 Difference]: Start difference. First operand 111490 states and 125425 transitions. Second operand has 3 states, 3 states have (on average 113.0) internal successors, (339), 3 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:12:22,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:12:22,904 INFO L93 Difference]: Finished difference Result 217427 states and 246760 transitions. [2024-10-23 21:12:22,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:12:22,905 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 113.0) internal successors, (339), 3 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 451 [2024-10-23 21:12:22,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:12:23,051 INFO L225 Difference]: With dead ends: 217427 [2024-10-23 21:12:23,051 INFO L226 Difference]: Without dead ends: 122474 [2024-10-23 21:12:23,092 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 455 GetRequests, 450 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-10-23 21:12:23,092 INFO L432 NwaCegarLoop]: 391 mSDtfsCounter, 1137 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 2263 mSolverCounterSat, 913 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1137 SdHoareTripleChecker+Valid, 409 SdHoareTripleChecker+Invalid, 3176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 913 IncrementalHoareTripleChecker+Valid, 2263 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2024-10-23 21:12:23,092 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1137 Valid, 409 Invalid, 3176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [913 Valid, 2263 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2024-10-23 21:12:23,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122474 states. [2024-10-23 21:12:24,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122474 to 122472. [2024-10-23 21:12:24,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122472 states, 122471 states have (on average 1.1164112320467703) internal successors, (136728), 122471 states have internal predecessors, (136728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:12:24,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122472 states to 122472 states and 136728 transitions. [2024-10-23 21:12:24,610 INFO L78 Accepts]: Start accepts. Automaton has 122472 states and 136728 transitions. Word has length 451 [2024-10-23 21:12:24,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:12:24,611 INFO L471 AbstractCegarLoop]: Abstraction has 122472 states and 136728 transitions. [2024-10-23 21:12:24,611 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 113.0) internal successors, (339), 3 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:12:24,611 INFO L276 IsEmpty]: Start isEmpty. Operand 122472 states and 136728 transitions. [2024-10-23 21:12:24,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 470 [2024-10-23 21:12:24,618 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:12:24,618 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2024-10-23 21:12:24,632 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-10-23 21:12:24,819 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-10-23 21:12:24,819 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:12:24,819 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:12:24,820 INFO L85 PathProgramCache]: Analyzing trace with hash -2010657551, now seen corresponding path program 1 times [2024-10-23 21:12:24,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:12:24,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274431683] [2024-10-23 21:12:24,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:12:24,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:12:24,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:12:25,035 INFO L134 CoverageAnalysis]: Checked inductivity of 664 backedges. 392 proven. 0 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2024-10-23 21:12:25,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:12:25,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274431683] [2024-10-23 21:12:25,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [274431683] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:12:25,035 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:12:25,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:12:25,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534567201] [2024-10-23 21:12:25,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:12:25,036 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:12:25,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:12:25,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:12:25,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:12:25,037 INFO L87 Difference]: Start difference. First operand 122472 states and 136728 transitions. Second operand has 3 states, 3 states have (on average 95.66666666666667) internal successors, (287), 3 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:12:28,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:12:28,322 INFO L93 Difference]: Finished difference Result 266985 states and 299854 transitions. [2024-10-23 21:12:28,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:12:28,323 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 95.66666666666667) internal successors, (287), 3 states have internal predecessors, (287), 0 states have call successors, (0), 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 469 [2024-10-23 21:12:28,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:12:28,475 INFO L225 Difference]: With dead ends: 266985 [2024-10-23 21:12:28,476 INFO L226 Difference]: Without dead ends: 145301 [2024-10-23 21:12:28,524 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:12:28,524 INFO L432 NwaCegarLoop]: 1753 mSDtfsCounter, 723 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 2532 mSolverCounterSat, 683 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 723 SdHoareTripleChecker+Valid, 1896 SdHoareTripleChecker+Invalid, 3215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 683 IncrementalHoareTripleChecker+Valid, 2532 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2024-10-23 21:12:28,524 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [723 Valid, 1896 Invalid, 3215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [683 Valid, 2532 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2024-10-23 21:12:28,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145301 states. [2024-10-23 21:12:30,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145301 to 141345. [2024-10-23 21:12:30,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141345 states, 141344 states have (on average 1.101214059316278) internal successors, (155650), 141344 states have internal predecessors, (155650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:12:30,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141345 states to 141345 states and 155650 transitions. [2024-10-23 21:12:30,306 INFO L78 Accepts]: Start accepts. Automaton has 141345 states and 155650 transitions. Word has length 469 [2024-10-23 21:12:30,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:12:30,306 INFO L471 AbstractCegarLoop]: Abstraction has 141345 states and 155650 transitions. [2024-10-23 21:12:30,306 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 95.66666666666667) internal successors, (287), 3 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:12:30,306 INFO L276 IsEmpty]: Start isEmpty. Operand 141345 states and 155650 transitions. [2024-10-23 21:12:30,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 583 [2024-10-23 21:12:30,324 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:12:30,324 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:12:30,324 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-10-23 21:12:30,325 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:12:30,325 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:12:30,325 INFO L85 PathProgramCache]: Analyzing trace with hash -230516402, now seen corresponding path program 1 times [2024-10-23 21:12:30,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:12:30,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875616625] [2024-10-23 21:12:30,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:12:30,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:12:30,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:12:31,620 INFO L134 CoverageAnalysis]: Checked inductivity of 481 backedges. 351 proven. 110 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-10-23 21:12:31,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:12:31,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1875616625] [2024-10-23 21:12:31,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1875616625] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 21:12:31,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [85213208] [2024-10-23 21:12:31,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:12:31,621 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 21:12:31,622 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 21:12:31,623 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-23 21:12:31,624 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-23 21:12:31,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:12:31,758 INFO L255 TraceCheckSpWp]: Trace formula consists of 718 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-23 21:12:31,763 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 21:12:32,519 INFO L134 CoverageAnalysis]: Checked inductivity of 481 backedges. 337 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-10-23 21:12:32,519 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-23 21:12:32,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [85213208] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:12:32,519 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-23 21:12:32,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2024-10-23 21:12:32,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243646703] [2024-10-23 21:12:32,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:12:32,520 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:12:32,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:12:32,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:12:32,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-10-23 21:12:32,522 INFO L87 Difference]: Start difference. First operand 141345 states and 155650 transitions. Second operand has 3 states, 3 states have (on average 146.66666666666666) internal successors, (440), 2 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:12:35,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:12:35,377 INFO L93 Difference]: Finished difference Result 267742 states and 295780 transitions. [2024-10-23 21:12:35,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:12:35,378 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 146.66666666666666) internal successors, (440), 2 states have internal predecessors, (440), 0 states have call successors, (0), 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 582 [2024-10-23 21:12:35,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:12:35,541 INFO L225 Difference]: With dead ends: 267742 [2024-10-23 21:12:35,541 INFO L226 Difference]: Without dead ends: 145295 [2024-10-23 21:12:35,601 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 586 GetRequests, 581 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-10-23 21:12:35,601 INFO L432 NwaCegarLoop]: 1010 mSDtfsCounter, 544 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 2449 mSolverCounterSat, 109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 544 SdHoareTripleChecker+Valid, 1140 SdHoareTripleChecker+Invalid, 2558 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 2449 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-10-23 21:12:35,601 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [544 Valid, 1140 Invalid, 2558 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 2449 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-10-23 21:12:35,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145295 states. [2024-10-23 21:12:36,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145295 to 145286. [2024-10-23 21:12:36,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145286 states, 145285 states have (on average 1.0995353959458993) internal successors, (159746), 145285 states have internal predecessors, (159746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:12:37,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145286 states to 145286 states and 159746 transitions. [2024-10-23 21:12:37,224 INFO L78 Accepts]: Start accepts. Automaton has 145286 states and 159746 transitions. Word has length 582 [2024-10-23 21:12:37,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:12:37,225 INFO L471 AbstractCegarLoop]: Abstraction has 145286 states and 159746 transitions. [2024-10-23 21:12:37,225 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 146.66666666666666) internal successors, (440), 2 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:12:37,225 INFO L276 IsEmpty]: Start isEmpty. Operand 145286 states and 159746 transitions. [2024-10-23 21:12:37,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 636 [2024-10-23 21:12:37,266 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:12:37,267 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:12:37,395 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-23 21:12:37,476 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 21:12:37,477 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:12:37,477 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:12:37,477 INFO L85 PathProgramCache]: Analyzing trace with hash -817085174, now seen corresponding path program 1 times [2024-10-23 21:12:37,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:12:37,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459953897] [2024-10-23 21:12:37,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:12:37,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:12:37,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:12:37,645 INFO L134 CoverageAnalysis]: Checked inductivity of 674 backedges. 531 proven. 0 refuted. 0 times theorem prover too weak. 143 trivial. 0 not checked. [2024-10-23 21:12:37,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:12:37,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459953897] [2024-10-23 21:12:37,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1459953897] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:12:37,645 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:12:37,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:12:37,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140408120] [2024-10-23 21:12:37,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:12:37,646 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:12:37,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:12:37,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:12:37,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:12:37,647 INFO L87 Difference]: Start difference. First operand 145286 states and 159746 transitions. Second operand has 3 states, 3 states have (on average 171.33333333333334) internal successors, (514), 3 states have internal predecessors, (514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:12:40,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:12:40,695 INFO L93 Difference]: Finished difference Result 299990 states and 329053 transitions. [2024-10-23 21:12:40,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:12:40,696 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 171.33333333333334) internal successors, (514), 3 states have internal predecessors, (514), 0 states have call successors, (0), 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 635 [2024-10-23 21:12:40,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:12:40,854 INFO L225 Difference]: With dead ends: 299990 [2024-10-23 21:12:40,855 INFO L226 Difference]: Without dead ends: 149193 [2024-10-23 21:12:40,928 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:12:40,929 INFO L432 NwaCegarLoop]: 1475 mSDtfsCounter, 1007 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 2327 mSolverCounterSat, 594 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1007 SdHoareTripleChecker+Valid, 1603 SdHoareTripleChecker+Invalid, 2921 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 594 IncrementalHoareTripleChecker+Valid, 2327 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-10-23 21:12:40,929 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1007 Valid, 1603 Invalid, 2921 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [594 Valid, 2327 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-10-23 21:12:41,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149193 states. [2024-10-23 21:12:42,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149193 to 145247. [2024-10-23 21:12:42,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145247 states, 145246 states have (on average 1.0618261432328602) internal successors, (154226), 145246 states have internal predecessors, (154226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:12:42,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145247 states to 145247 states and 154226 transitions. [2024-10-23 21:12:42,874 INFO L78 Accepts]: Start accepts. Automaton has 145247 states and 154226 transitions. Word has length 635 [2024-10-23 21:12:42,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:12:42,875 INFO L471 AbstractCegarLoop]: Abstraction has 145247 states and 154226 transitions. [2024-10-23 21:12:42,875 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 171.33333333333334) internal successors, (514), 3 states have internal predecessors, (514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:12:42,875 INFO L276 IsEmpty]: Start isEmpty. Operand 145247 states and 154226 transitions. [2024-10-23 21:12:42,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 716 [2024-10-23 21:12:42,896 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:12:42,896 INFO L215 NwaCegarLoop]: trace histogram [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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-10-23 21:12:42,896 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-10-23 21:12:42,897 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:12:42,897 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:12:42,897 INFO L85 PathProgramCache]: Analyzing trace with hash -992773250, now seen corresponding path program 1 times [2024-10-23 21:12:42,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:12:42,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323886431] [2024-10-23 21:12:42,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:12:42,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:12:42,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:12:44,074 INFO L134 CoverageAnalysis]: Checked inductivity of 1020 backedges. 789 proven. 75 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2024-10-23 21:12:44,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:12:44,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323886431] [2024-10-23 21:12:44,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1323886431] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 21:12:44,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [449835010] [2024-10-23 21:12:44,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:12:44,075 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 21:12:44,075 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 21:12:44,076 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-23 21:12:44,076 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-23 21:12:44,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:12:44,237 INFO L255 TraceCheckSpWp]: Trace formula consists of 898 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-23 21:12:44,243 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 21:12:44,982 INFO L134 CoverageAnalysis]: Checked inductivity of 1020 backedges. 927 proven. 0 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2024-10-23 21:12:44,982 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-23 21:12:44,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [449835010] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:12:44,984 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-23 21:12:44,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2024-10-23 21:12:44,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950520937] [2024-10-23 21:12:44,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:12:44,985 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-23 21:12:44,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:12:44,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-23 21:12:44,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-23 21:12:44,985 INFO L87 Difference]: Start difference. First operand 145247 states and 154226 transitions. Second operand has 4 states, 4 states have (on average 156.0) internal successors, (624), 4 states have internal predecessors, (624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)