./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem17_label48.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3061b6dc Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/eca-rers2012/Problem17_label48.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 0d929df4a838f03b0a70e3f4a24ac63ec6782a4f298757e5a2174a7cc8e9071c --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-18 10:52:45,183 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-18 10:52:45,252 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-18 10:52:45,256 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-18 10:52:45,259 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-18 10:52:45,292 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-18 10:52:45,293 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-18 10:52:45,293 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-18 10:52:45,293 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-18 10:52:45,294 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-18 10:52:45,294 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-18 10:52:45,294 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-18 10:52:45,294 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-18 10:52:45,295 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-18 10:52:45,295 INFO L153 SettingsManager]: * Use SBE=true [2024-11-18 10:52:45,295 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-18 10:52:45,295 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-18 10:52:45,295 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-18 10:52:45,296 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-18 10:52:45,296 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-18 10:52:45,296 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-18 10:52:45,297 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-18 10:52:45,297 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-18 10:52:45,297 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-18 10:52:45,298 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-18 10:52:45,298 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-18 10:52:45,298 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-18 10:52:45,298 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-18 10:52:45,299 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-18 10:52:45,299 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-18 10:52:45,299 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-18 10:52:45,299 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-18 10:52:45,299 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 10:52:45,300 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-18 10:52:45,300 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-18 10:52:45,300 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-18 10:52:45,300 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-18 10:52:45,301 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-18 10:52:45,301 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-18 10:52:45,301 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-18 10:52:45,301 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-18 10:52:45,303 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-18 10:52:45,303 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0d929df4a838f03b0a70e3f4a24ac63ec6782a4f298757e5a2174a7cc8e9071c [2024-11-18 10:52:45,508 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-18 10:52:45,534 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-18 10:52:45,536 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-18 10:52:45,537 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-18 10:52:45,538 INFO L274 PluginConnector]: CDTParser initialized [2024-11-18 10:52:45,539 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem17_label48.c [2024-11-18 10:52:46,794 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-18 10:52:47,079 INFO L384 CDTParser]: Found 1 translation units. [2024-11-18 10:52:47,081 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem17_label48.c [2024-11-18 10:52:47,108 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/17175f36a/aa3a8e25b3b445bb982761ae47dc3d1d/FLAG584e505b5 [2024-11-18 10:52:47,364 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/17175f36a/aa3a8e25b3b445bb982761ae47dc3d1d [2024-11-18 10:52:47,366 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-18 10:52:47,367 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-18 10:52:47,368 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-18 10:52:47,368 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-18 10:52:47,373 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-18 10:52:47,374 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 10:52:47" (1/1) ... [2024-11-18 10:52:47,374 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@10430a7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:52:47, skipping insertion in model container [2024-11-18 10:52:47,374 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 10:52:47" (1/1) ... [2024-11-18 10:52:47,440 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-18 10:52:47,674 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem17_label48.c[6493,6506] [2024-11-18 10:52:48,036 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 10:52:48,044 INFO L200 MainTranslator]: Completed pre-run [2024-11-18 10:52:48,062 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem17_label48.c[6493,6506] [2024-11-18 10:52:48,266 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 10:52:48,281 INFO L204 MainTranslator]: Completed translation [2024-11-18 10:52:48,282 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:52:48 WrapperNode [2024-11-18 10:52:48,282 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-18 10:52:48,282 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-18 10:52:48,283 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-18 10:52:48,283 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-18 10:52:48,288 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:52:48" (1/1) ... [2024-11-18 10:52:48,316 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:52:48" (1/1) ... [2024-11-18 10:52:48,500 INFO L138 Inliner]: procedures = 15, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 2613 [2024-11-18 10:52:48,501 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-18 10:52:48,502 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-18 10:52:48,502 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-18 10:52:48,502 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-18 10:52:48,510 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:52:48" (1/1) ... [2024-11-18 10:52:48,510 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:52:48" (1/1) ... [2024-11-18 10:52:48,541 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:52:48" (1/1) ... [2024-11-18 10:52:48,705 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-18 10:52:48,705 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:52:48" (1/1) ... [2024-11-18 10:52:48,705 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:52:48" (1/1) ... [2024-11-18 10:52:48,801 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:52:48" (1/1) ... [2024-11-18 10:52:48,847 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:52:48" (1/1) ... [2024-11-18 10:52:48,870 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:52:48" (1/1) ... [2024-11-18 10:52:48,881 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:52:48" (1/1) ... [2024-11-18 10:52:48,907 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-18 10:52:48,909 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-18 10:52:48,909 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-18 10:52:48,910 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-18 10:52:48,910 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:52:48" (1/1) ... [2024-11-18 10:52:48,915 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 10:52:48,924 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 10:52:48,938 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-18 10:52:48,940 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-18 10:52:48,973 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-18 10:52:48,973 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-18 10:52:48,973 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-18 10:52:48,973 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-18 10:52:49,024 INFO L238 CfgBuilder]: Building ICFG [2024-11-18 10:52:49,025 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-18 10:52:51,367 INFO L? ?]: Removed 372 outVars from TransFormulas that were not future-live. [2024-11-18 10:52:51,368 INFO L287 CfgBuilder]: Performing block encoding [2024-11-18 10:52:51,395 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-18 10:52:51,397 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-18 10:52:51,398 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 10:52:51 BoogieIcfgContainer [2024-11-18 10:52:51,398 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-18 10:52:51,399 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-18 10:52:51,399 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-18 10:52:51,402 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-18 10:52:51,402 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 10:52:47" (1/3) ... [2024-11-18 10:52:51,402 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@bc0b1c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 10:52:51, skipping insertion in model container [2024-11-18 10:52:51,403 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:52:48" (2/3) ... [2024-11-18 10:52:51,403 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@bc0b1c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 10:52:51, skipping insertion in model container [2024-11-18 10:52:51,403 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 10:52:51" (3/3) ... [2024-11-18 10:52:51,407 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label48.c [2024-11-18 10:52:51,422 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-18 10:52:51,422 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-18 10:52:51,496 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-18 10:52:51,502 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;@6927d03, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-18 10:52:51,503 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-18 10:52:51,508 INFO L276 IsEmpty]: Start isEmpty. Operand has 590 states, 588 states have (on average 1.8061224489795917) internal successors, (1062), 589 states have internal predecessors, (1062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:52:51,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-11-18 10:52:51,515 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:52:51,515 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 10:52:51,516 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:52:51,519 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:52:51,520 INFO L85 PathProgramCache]: Analyzing trace with hash 712930081, now seen corresponding path program 1 times [2024-11-18 10:52:51,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:52:51,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882756107] [2024-11-18 10:52:51,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:52:51,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:52:51,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:52:51,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 10:52:51,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:52:51,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882756107] [2024-11-18 10:52:51,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1882756107] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:52:51,819 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:52:51,819 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-18 10:52:51,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032055952] [2024-11-18 10:52:51,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:52:51,825 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 10:52:51,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:52:51,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 10:52:51,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:52:51,850 INFO L87 Difference]: Start difference. First operand has 590 states, 588 states have (on average 1.8061224489795917) internal successors, (1062), 589 states have internal predecessors, (1062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 2 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:52:53,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:52:53,820 INFO L93 Difference]: Finished difference Result 1644 states and 3029 transitions. [2024-11-18 10:52:53,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 10:52:53,822 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 2 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2024-11-18 10:52:53,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:52:53,835 INFO L225 Difference]: With dead ends: 1644 [2024-11-18 10:52:53,836 INFO L226 Difference]: Without dead ends: 977 [2024-11-18 10:52:53,841 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:52:53,843 INFO L432 NwaCegarLoop]: 425 mSDtfsCounter, 445 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 1470 mSolverCounterSat, 332 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 445 SdHoareTripleChecker+Valid, 503 SdHoareTripleChecker+Invalid, 1802 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 332 IncrementalHoareTripleChecker+Valid, 1470 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-11-18 10:52:53,845 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [445 Valid, 503 Invalid, 1802 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [332 Valid, 1470 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-11-18 10:52:53,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 977 states. [2024-11-18 10:52:53,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 977 to 971. [2024-11-18 10:52:53,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 971 states, 970 states have (on average 1.5536082474226804) internal successors, (1507), 970 states have internal predecessors, (1507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:52:53,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 971 states to 971 states and 1507 transitions. [2024-11-18 10:52:53,919 INFO L78 Accepts]: Start accepts. Automaton has 971 states and 1507 transitions. Word has length 43 [2024-11-18 10:52:53,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:52:53,920 INFO L471 AbstractCegarLoop]: Abstraction has 971 states and 1507 transitions. [2024-11-18 10:52:53,920 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 2 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:52:53,921 INFO L276 IsEmpty]: Start isEmpty. Operand 971 states and 1507 transitions. [2024-11-18 10:52:53,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2024-11-18 10:52:53,923 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:52:53,924 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 10:52:53,924 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-18 10:52:53,924 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:52:53,924 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:52:53,925 INFO L85 PathProgramCache]: Analyzing trace with hash -1850762806, now seen corresponding path program 1 times [2024-11-18 10:52:53,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:52:53,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526020265] [2024-11-18 10:52:53,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:52:53,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:52:53,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:52:54,108 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 10:52:54,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:52:54,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526020265] [2024-11-18 10:52:54,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [526020265] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:52:54,109 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:52:54,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-18 10:52:54,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205303723] [2024-11-18 10:52:54,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:52:54,110 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 10:52:54,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:52:54,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 10:52:54,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:52:54,113 INFO L87 Difference]: Start difference. First operand 971 states and 1507 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:52:55,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:52:55,775 INFO L93 Difference]: Finished difference Result 2815 states and 4382 transitions. [2024-11-18 10:52:55,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 10:52:55,775 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 0 states have call successors, (0), 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 110 [2024-11-18 10:52:55,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:52:55,781 INFO L225 Difference]: With dead ends: 2815 [2024-11-18 10:52:55,781 INFO L226 Difference]: Without dead ends: 1846 [2024-11-18 10:52:55,783 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:52:55,784 INFO L432 NwaCegarLoop]: 507 mSDtfsCounter, 407 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 1382 mSolverCounterSat, 324 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 407 SdHoareTripleChecker+Valid, 580 SdHoareTripleChecker+Invalid, 1706 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 324 IncrementalHoareTripleChecker+Valid, 1382 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-18 10:52:55,784 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [407 Valid, 580 Invalid, 1706 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [324 Valid, 1382 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-18 10:52:55,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1846 states. [2024-11-18 10:52:55,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1846 to 1841. [2024-11-18 10:52:55,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1841 states, 1840 states have (on average 1.3505434782608696) internal successors, (2485), 1840 states have internal predecessors, (2485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:52:55,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1841 states to 1841 states and 2485 transitions. [2024-11-18 10:52:55,823 INFO L78 Accepts]: Start accepts. Automaton has 1841 states and 2485 transitions. Word has length 110 [2024-11-18 10:52:55,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:52:55,824 INFO L471 AbstractCegarLoop]: Abstraction has 1841 states and 2485 transitions. [2024-11-18 10:52:55,825 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:52:55,825 INFO L276 IsEmpty]: Start isEmpty. Operand 1841 states and 2485 transitions. [2024-11-18 10:52:55,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2024-11-18 10:52:55,828 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:52:55,828 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 10:52:55,830 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-18 10:52:55,831 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:52:55,831 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:52:55,831 INFO L85 PathProgramCache]: Analyzing trace with hash -995864428, now seen corresponding path program 1 times [2024-11-18 10:52:55,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:52:55,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872811281] [2024-11-18 10:52:55,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:52:55,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:52:55,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:52:56,165 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 10:52:56,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:52:56,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [872811281] [2024-11-18 10:52:56,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [872811281] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:52:56,168 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:52:56,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 10:52:56,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11520385] [2024-11-18 10:52:56,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:52:56,169 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 10:52:56,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:52:56,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 10:52:56,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-18 10:52:56,171 INFO L87 Difference]: Start difference. First operand 1841 states and 2485 transitions. Second operand has 4 states, 4 states have (on average 28.25) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:52:59,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:52:59,205 INFO L93 Difference]: Finished difference Result 6767 states and 9263 transitions. [2024-11-18 10:52:59,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 10:52:59,206 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.25) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 113 [2024-11-18 10:52:59,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:52:59,218 INFO L225 Difference]: With dead ends: 6767 [2024-11-18 10:52:59,219 INFO L226 Difference]: Without dead ends: 4928 [2024-11-18 10:52:59,221 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-18 10:52:59,225 INFO L432 NwaCegarLoop]: 200 mSDtfsCounter, 925 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 2516 mSolverCounterSat, 774 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 925 SdHoareTripleChecker+Valid, 286 SdHoareTripleChecker+Invalid, 3290 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 774 IncrementalHoareTripleChecker+Valid, 2516 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2024-11-18 10:52:59,226 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [925 Valid, 286 Invalid, 3290 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [774 Valid, 2516 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2024-11-18 10:52:59,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4928 states. [2024-11-18 10:52:59,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4928 to 4875. [2024-11-18 10:52:59,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4875 states, 4874 states have (on average 1.2870332375871973) internal successors, (6273), 4874 states have internal predecessors, (6273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:52:59,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4875 states to 4875 states and 6273 transitions. [2024-11-18 10:52:59,286 INFO L78 Accepts]: Start accepts. Automaton has 4875 states and 6273 transitions. Word has length 113 [2024-11-18 10:52:59,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:52:59,287 INFO L471 AbstractCegarLoop]: Abstraction has 4875 states and 6273 transitions. [2024-11-18 10:52:59,287 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.25) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:52:59,287 INFO L276 IsEmpty]: Start isEmpty. Operand 4875 states and 6273 transitions. [2024-11-18 10:52:59,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2024-11-18 10:52:59,289 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:52:59,289 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 10:52:59,290 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-18 10:52:59,290 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:52:59,290 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:52:59,290 INFO L85 PathProgramCache]: Analyzing trace with hash -2113802819, now seen corresponding path program 1 times [2024-11-18 10:52:59,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:52:59,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45644340] [2024-11-18 10:52:59,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:52:59,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:52:59,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:52:59,439 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 81 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2024-11-18 10:52:59,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:52:59,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45644340] [2024-11-18 10:52:59,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [45644340] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:52:59,439 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:52:59,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-18 10:52:59,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433992857] [2024-11-18 10:52:59,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:52:59,440 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 10:52:59,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:52:59,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 10:52:59,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:52:59,441 INFO L87 Difference]: Start difference. First operand 4875 states and 6273 transitions. Second operand has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 2 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:53:00,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:53:00,805 INFO L93 Difference]: Finished difference Result 14436 states and 18550 transitions. [2024-11-18 10:53:00,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 10:53:00,805 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 2 states have internal predecessors, (115), 0 states have call successors, (0), 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 179 [2024-11-18 10:53:00,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:53:00,824 INFO L225 Difference]: With dead ends: 14436 [2024-11-18 10:53:00,824 INFO L226 Difference]: Without dead ends: 8277 [2024-11-18 10:53:00,831 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:53:00,832 INFO L432 NwaCegarLoop]: 516 mSDtfsCounter, 386 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 1081 mSolverCounterSat, 548 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 386 SdHoareTripleChecker+Valid, 591 SdHoareTripleChecker+Invalid, 1629 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 548 IncrementalHoareTripleChecker+Valid, 1081 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-18 10:53:00,832 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [386 Valid, 591 Invalid, 1629 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [548 Valid, 1081 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-18 10:53:00,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8277 states. [2024-11-18 10:53:00,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8277 to 6571. [2024-11-18 10:53:00,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6571 states, 6570 states have (on average 1.1796042617960427) internal successors, (7750), 6570 states have internal predecessors, (7750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:53:00,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6571 states to 6571 states and 7750 transitions. [2024-11-18 10:53:00,957 INFO L78 Accepts]: Start accepts. Automaton has 6571 states and 7750 transitions. Word has length 179 [2024-11-18 10:53:00,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:53:00,957 INFO L471 AbstractCegarLoop]: Abstraction has 6571 states and 7750 transitions. [2024-11-18 10:53:00,958 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 2 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:53:00,959 INFO L276 IsEmpty]: Start isEmpty. Operand 6571 states and 7750 transitions. [2024-11-18 10:53:00,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2024-11-18 10:53:00,960 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:53:00,960 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 10:53:00,962 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-18 10:53:00,962 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:53:00,963 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:53:00,963 INFO L85 PathProgramCache]: Analyzing trace with hash 280509979, now seen corresponding path program 1 times [2024-11-18 10:53:00,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:53:00,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122571239] [2024-11-18 10:53:00,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:53:00,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:53:01,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:53:01,114 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 146 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 10:53:01,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:53:01,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122571239] [2024-11-18 10:53:01,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [122571239] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:53:01,116 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:53:01,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 10:53:01,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752924666] [2024-11-18 10:53:01,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:53:01,117 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 10:53:01,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:53:01,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 10:53:01,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:53:01,120 INFO L87 Difference]: Start difference. First operand 6571 states and 7750 transitions. Second operand has 3 states, 3 states have (on average 64.0) internal successors, (192), 3 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:53:02,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:53:02,399 INFO L93 Difference]: Finished difference Result 16550 states and 19925 transitions. [2024-11-18 10:53:02,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 10:53:02,400 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 64.0) internal successors, (192), 3 states have internal predecessors, (192), 0 states have call successors, (0), 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 192 [2024-11-18 10:53:02,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:53:02,426 INFO L225 Difference]: With dead ends: 16550 [2024-11-18 10:53:02,426 INFO L226 Difference]: Without dead ends: 9981 [2024-11-18 10:53:02,433 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:53:02,434 INFO L432 NwaCegarLoop]: 743 mSDtfsCounter, 499 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 1227 mSolverCounterSat, 321 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 499 SdHoareTripleChecker+Valid, 801 SdHoareTripleChecker+Invalid, 1548 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 321 IncrementalHoareTripleChecker+Valid, 1227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-18 10:53:02,434 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [499 Valid, 801 Invalid, 1548 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [321 Valid, 1227 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-18 10:53:02,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9981 states. [2024-11-18 10:53:02,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9981 to 9981. [2024-11-18 10:53:02,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9981 states, 9980 states have (on average 1.1698396793587174) internal successors, (11675), 9980 states have internal predecessors, (11675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:53:02,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9981 states to 9981 states and 11675 transitions. [2024-11-18 10:53:02,591 INFO L78 Accepts]: Start accepts. Automaton has 9981 states and 11675 transitions. Word has length 192 [2024-11-18 10:53:02,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:53:02,591 INFO L471 AbstractCegarLoop]: Abstraction has 9981 states and 11675 transitions. [2024-11-18 10:53:02,592 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 64.0) internal successors, (192), 3 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:53:02,592 INFO L276 IsEmpty]: Start isEmpty. Operand 9981 states and 11675 transitions. [2024-11-18 10:53:02,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2024-11-18 10:53:02,593 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:53:02,593 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 10:53:02,593 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-18 10:53:02,594 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:53:02,594 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:53:02,594 INFO L85 PathProgramCache]: Analyzing trace with hash 193566755, now seen corresponding path program 1 times [2024-11-18 10:53:02,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:53:02,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145866071] [2024-11-18 10:53:02,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:53:02,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:53:02,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:53:02,757 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 81 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-11-18 10:53:02,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:53:02,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145866071] [2024-11-18 10:53:02,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1145866071] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:53:02,757 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:53:02,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 10:53:02,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537456653] [2024-11-18 10:53:02,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:53:02,759 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 10:53:02,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:53:02,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 10:53:02,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:53:02,759 INFO L87 Difference]: Start difference. First operand 9981 states and 11675 transitions. Second operand has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:53:04,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:53:04,310 INFO L93 Difference]: Finished difference Result 24248 states and 28757 transitions. [2024-11-18 10:53:04,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 10:53:04,311 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 0 states have call successors, (0), 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 197 [2024-11-18 10:53:04,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:53:04,341 INFO L225 Difference]: With dead ends: 24248 [2024-11-18 10:53:04,341 INFO L226 Difference]: Without dead ends: 14269 [2024-11-18 10:53:04,351 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:53:04,352 INFO L432 NwaCegarLoop]: 387 mSDtfsCounter, 477 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 1453 mSolverCounterSat, 254 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 477 SdHoareTripleChecker+Valid, 444 SdHoareTripleChecker+Invalid, 1707 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 254 IncrementalHoareTripleChecker+Valid, 1453 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-18 10:53:04,352 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [477 Valid, 444 Invalid, 1707 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [254 Valid, 1453 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-18 10:53:04,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14269 states. [2024-11-18 10:53:04,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14269 to 13397. [2024-11-18 10:53:04,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13397 states, 13396 states have (on average 1.1923708569722304) internal successors, (15973), 13396 states have internal predecessors, (15973), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:53:04,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13397 states to 13397 states and 15973 transitions. [2024-11-18 10:53:04,531 INFO L78 Accepts]: Start accepts. Automaton has 13397 states and 15973 transitions. Word has length 197 [2024-11-18 10:53:04,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:53:04,532 INFO L471 AbstractCegarLoop]: Abstraction has 13397 states and 15973 transitions. [2024-11-18 10:53:04,532 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:53:04,532 INFO L276 IsEmpty]: Start isEmpty. Operand 13397 states and 15973 transitions. [2024-11-18 10:53:04,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2024-11-18 10:53:04,534 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:53:04,534 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 10:53:04,534 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-18 10:53:04,534 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:53:04,535 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:53:04,535 INFO L85 PathProgramCache]: Analyzing trace with hash -256455219, now seen corresponding path program 1 times [2024-11-18 10:53:04,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:53:04,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268409580] [2024-11-18 10:53:04,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:53:04,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:53:04,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:53:04,646 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 81 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2024-11-18 10:53:04,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:53:04,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268409580] [2024-11-18 10:53:04,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1268409580] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:53:04,647 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:53:04,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 10:53:04,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887865458] [2024-11-18 10:53:04,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:53:04,648 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 10:53:04,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:53:04,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 10:53:04,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:53:04,648 INFO L87 Difference]: Start difference. First operand 13397 states and 15973 transitions. Second operand has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:53:06,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:53:06,343 INFO L93 Difference]: Finished difference Result 30624 states and 36860 transitions. [2024-11-18 10:53:06,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 10:53:06,343 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 0 states have call successors, (0), 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 242 [2024-11-18 10:53:06,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:53:06,367 INFO L225 Difference]: With dead ends: 30624 [2024-11-18 10:53:06,367 INFO L226 Difference]: Without dead ends: 17229 [2024-11-18 10:53:06,378 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:53:06,381 INFO L432 NwaCegarLoop]: 366 mSDtfsCounter, 460 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 1392 mSolverCounterSat, 293 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 460 SdHoareTripleChecker+Valid, 410 SdHoareTripleChecker+Invalid, 1685 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 293 IncrementalHoareTripleChecker+Valid, 1392 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-18 10:53:06,381 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [460 Valid, 410 Invalid, 1685 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [293 Valid, 1392 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-18 10:53:06,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17229 states. [2024-11-18 10:53:06,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17229 to 13379. [2024-11-18 10:53:06,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13379 states, 13378 states have (on average 1.190611451637016) internal successors, (15928), 13378 states have internal predecessors, (15928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:53:06,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13379 states to 13379 states and 15928 transitions. [2024-11-18 10:53:06,532 INFO L78 Accepts]: Start accepts. Automaton has 13379 states and 15928 transitions. Word has length 242 [2024-11-18 10:53:06,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:53:06,533 INFO L471 AbstractCegarLoop]: Abstraction has 13379 states and 15928 transitions. [2024-11-18 10:53:06,534 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:53:06,534 INFO L276 IsEmpty]: Start isEmpty. Operand 13379 states and 15928 transitions. [2024-11-18 10:53:06,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2024-11-18 10:53:06,537 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:53:06,537 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 10:53:06,538 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-18 10:53:06,538 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:53:06,538 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:53:06,538 INFO L85 PathProgramCache]: Analyzing trace with hash -1929609517, now seen corresponding path program 1 times [2024-11-18 10:53:06,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:53:06,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180657560] [2024-11-18 10:53:06,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:53:06,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:53:06,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:53:06,733 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 163 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 10:53:06,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:53:06,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180657560] [2024-11-18 10:53:06,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [180657560] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:53:06,734 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:53:06,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 10:53:06,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593014156] [2024-11-18 10:53:06,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:53:06,734 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 10:53:06,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:53:06,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 10:53:06,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:53:06,735 INFO L87 Difference]: Start difference. First operand 13379 states and 15928 transitions. Second operand has 3 states, 3 states have (on average 86.33333333333333) internal successors, (259), 3 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:53:08,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:53:08,362 INFO L93 Difference]: Finished difference Result 30622 states and 36711 transitions. [2024-11-18 10:53:08,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 10:53:08,363 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 86.33333333333333) internal successors, (259), 3 states have internal predecessors, (259), 0 states have call successors, (0), 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 259 [2024-11-18 10:53:08,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:53:08,386 INFO L225 Difference]: With dead ends: 30622 [2024-11-18 10:53:08,387 INFO L226 Difference]: Without dead ends: 17245 [2024-11-18 10:53:08,398 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:53:08,399 INFO L432 NwaCegarLoop]: 812 mSDtfsCounter, 356 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 1300 mSolverCounterSat, 300 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 356 SdHoareTripleChecker+Valid, 887 SdHoareTripleChecker+Invalid, 1600 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 300 IncrementalHoareTripleChecker+Valid, 1300 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-18 10:53:08,399 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [356 Valid, 887 Invalid, 1600 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [300 Valid, 1300 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-18 10:53:08,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17245 states. [2024-11-18 10:53:08,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17245 to 16812. [2024-11-18 10:53:08,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16812 states, 16811 states have (on average 1.1727440366426745) internal successors, (19715), 16811 states have internal predecessors, (19715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:53:08,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16812 states to 16812 states and 19715 transitions. [2024-11-18 10:53:08,549 INFO L78 Accepts]: Start accepts. Automaton has 16812 states and 19715 transitions. Word has length 259 [2024-11-18 10:53:08,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:53:08,550 INFO L471 AbstractCegarLoop]: Abstraction has 16812 states and 19715 transitions. [2024-11-18 10:53:08,550 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 86.33333333333333) internal successors, (259), 3 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:53:08,550 INFO L276 IsEmpty]: Start isEmpty. Operand 16812 states and 19715 transitions. [2024-11-18 10:53:08,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2024-11-18 10:53:08,555 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:53:08,556 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 10:53:08,556 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-18 10:53:08,556 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:53:08,556 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:53:08,556 INFO L85 PathProgramCache]: Analyzing trace with hash -1330701290, now seen corresponding path program 1 times [2024-11-18 10:53:08,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:53:08,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577742852] [2024-11-18 10:53:08,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:53:08,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:53:08,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:53:08,857 INFO L134 CoverageAnalysis]: Checked inductivity of 331 backedges. 220 proven. 70 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2024-11-18 10:53:08,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:53:08,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1577742852] [2024-11-18 10:53:08,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1577742852] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 10:53:08,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1095809485] [2024-11-18 10:53:08,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:53:08,858 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 10:53:08,858 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 10:53:08,860 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 10:53:08,861 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-18 10:53:08,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:53:08,969 INFO L255 TraceCheckSpWp]: Trace formula consists of 391 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-18 10:53:08,978 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 10:53:09,185 INFO L134 CoverageAnalysis]: Checked inductivity of 331 backedges. 220 proven. 70 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2024-11-18 10:53:09,185 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 10:53:09,410 INFO L134 CoverageAnalysis]: Checked inductivity of 331 backedges. 290 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2024-11-18 10:53:09,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1095809485] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-18 10:53:09,410 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-18 10:53:09,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 5 [2024-11-18 10:53:09,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468911766] [2024-11-18 10:53:09,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:53:09,411 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 10:53:09,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:53:09,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 10:53:09,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-18 10:53:09,412 INFO L87 Difference]: Start difference. First operand 16812 states and 19715 transitions. Second operand has 4 states, 4 states have (on average 56.75) internal successors, (227), 3 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:53:12,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:53:12,028 INFO L93 Difference]: Finished difference Result 47275 states and 56056 transitions. [2024-11-18 10:53:12,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 10:53:12,028 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 56.75) internal successors, (227), 3 states have internal predecessors, (227), 0 states have call successors, (0), 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 267 [2024-11-18 10:53:12,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:53:12,068 INFO L225 Difference]: With dead ends: 47275 [2024-11-18 10:53:12,068 INFO L226 Difference]: Without dead ends: 28306 [2024-11-18 10:53:12,082 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 535 GetRequests, 531 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-18 10:53:12,083 INFO L432 NwaCegarLoop]: 86 mSDtfsCounter, 1063 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 2266 mSolverCounterSat, 1224 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1063 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 3490 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1224 IncrementalHoareTripleChecker+Valid, 2266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2024-11-18 10:53:12,083 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1063 Valid, 149 Invalid, 3490 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1224 Valid, 2266 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2024-11-18 10:53:12,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28306 states. [2024-11-18 10:53:12,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28306 to 27875. [2024-11-18 10:53:12,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27875 states, 27874 states have (on average 1.1424625098658248) internal successors, (31845), 27874 states have internal predecessors, (31845), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:53:12,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27875 states to 27875 states and 31845 transitions. [2024-11-18 10:53:12,322 INFO L78 Accepts]: Start accepts. Automaton has 27875 states and 31845 transitions. Word has length 267 [2024-11-18 10:53:12,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:53:12,323 INFO L471 AbstractCegarLoop]: Abstraction has 27875 states and 31845 transitions. [2024-11-18 10:53:12,323 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 56.75) internal successors, (227), 3 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:53:12,323 INFO L276 IsEmpty]: Start isEmpty. Operand 27875 states and 31845 transitions. [2024-11-18 10:53:12,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 362 [2024-11-18 10:53:12,328 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:53:12,328 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2024-11-18 10:53:12,343 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-18 10:53:12,529 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 10:53:12,529 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:53:12,530 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:53:12,530 INFO L85 PathProgramCache]: Analyzing trace with hash -1288715760, now seen corresponding path program 1 times [2024-11-18 10:53:12,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:53:12,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [708249073] [2024-11-18 10:53:12,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:53:12,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:53:12,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:53:12,717 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 122 proven. 0 refuted. 0 times theorem prover too weak. 229 trivial. 0 not checked. [2024-11-18 10:53:12,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:53:12,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [708249073] [2024-11-18 10:53:12,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [708249073] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:53:12,718 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:53:12,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 10:53:12,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026004499] [2024-11-18 10:53:12,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:53:12,719 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 10:53:12,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:53:12,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 10:53:12,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:53:12,719 INFO L87 Difference]: Start difference. First operand 27875 states and 31845 transitions. Second operand has 3 states, 3 states have (on average 69.0) internal successors, (207), 3 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:53:14,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:53:14,228 INFO L93 Difference]: Finished difference Result 64690 states and 73399 transitions. [2024-11-18 10:53:14,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 10:53:14,228 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 69.0) internal successors, (207), 3 states have internal predecessors, (207), 0 states have call successors, (0), 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 361 [2024-11-18 10:53:14,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:53:14,267 INFO L225 Difference]: With dead ends: 64690 [2024-11-18 10:53:14,267 INFO L226 Difference]: Without dead ends: 36817 [2024-11-18 10:53:14,287 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:53:14,288 INFO L432 NwaCegarLoop]: 239 mSDtfsCounter, 485 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 1269 mSolverCounterSat, 212 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 485 SdHoareTripleChecker+Valid, 282 SdHoareTripleChecker+Invalid, 1481 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 212 IncrementalHoareTripleChecker+Valid, 1269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-18 10:53:14,288 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [485 Valid, 282 Invalid, 1481 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [212 Valid, 1269 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-18 10:53:14,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36817 states. [2024-11-18 10:53:14,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36817 to 36367. [2024-11-18 10:53:14,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36367 states, 36366 states have (on average 1.122422042567233) internal successors, (40818), 36366 states have internal predecessors, (40818), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:53:14,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36367 states to 36367 states and 40818 transitions. [2024-11-18 10:53:14,782 INFO L78 Accepts]: Start accepts. Automaton has 36367 states and 40818 transitions. Word has length 361 [2024-11-18 10:53:14,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:53:14,783 INFO L471 AbstractCegarLoop]: Abstraction has 36367 states and 40818 transitions. [2024-11-18 10:53:14,783 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 69.0) internal successors, (207), 3 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:53:14,783 INFO L276 IsEmpty]: Start isEmpty. Operand 36367 states and 40818 transitions. [2024-11-18 10:53:14,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 383 [2024-11-18 10:53:14,789 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:53:14,789 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2024-11-18 10:53:14,789 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-18 10:53:14,789 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:53:14,790 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:53:14,790 INFO L85 PathProgramCache]: Analyzing trace with hash -1181895680, now seen corresponding path program 1 times [2024-11-18 10:53:14,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:53:14,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768954419] [2024-11-18 10:53:14,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:53:14,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:53:14,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:53:15,050 INFO L134 CoverageAnalysis]: Checked inductivity of 367 backedges. 286 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2024-11-18 10:53:15,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:53:15,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [768954419] [2024-11-18 10:53:15,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [768954419] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:53:15,050 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:53:15,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 10:53:15,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340961576] [2024-11-18 10:53:15,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:53:15,051 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 10:53:15,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:53:15,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 10:53:15,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:53:15,051 INFO L87 Difference]: Start difference. First operand 36367 states and 40818 transitions. Second operand has 3 states, 3 states have (on average 100.66666666666667) internal successors, (302), 3 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:53:16,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:53:16,390 INFO L93 Difference]: Finished difference Result 79526 states and 89552 transitions. [2024-11-18 10:53:16,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 10:53:16,390 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 100.66666666666667) internal successors, (302), 3 states have internal predecessors, (302), 0 states have call successors, (0), 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 382 [2024-11-18 10:53:16,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:53:16,439 INFO L225 Difference]: With dead ends: 79526 [2024-11-18 10:53:16,439 INFO L226 Difference]: Without dead ends: 43161 [2024-11-18 10:53:16,468 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:53:16,469 INFO L432 NwaCegarLoop]: 731 mSDtfsCounter, 272 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 1155 mSolverCounterSat, 159 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 272 SdHoareTripleChecker+Valid, 793 SdHoareTripleChecker+Invalid, 1314 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 159 IncrementalHoareTripleChecker+Valid, 1155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-18 10:53:16,469 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [272 Valid, 793 Invalid, 1314 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [159 Valid, 1155 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-18 10:53:16,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43161 states. [2024-11-18 10:53:16,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43161 to 43161. [2024-11-18 10:53:16,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43161 states, 43160 states have (on average 1.1083178869323447) internal successors, (47835), 43160 states have internal predecessors, (47835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:53:17,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43161 states to 43161 states and 47835 transitions. [2024-11-18 10:53:17,109 INFO L78 Accepts]: Start accepts. Automaton has 43161 states and 47835 transitions. Word has length 382 [2024-11-18 10:53:17,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:53:17,110 INFO L471 AbstractCegarLoop]: Abstraction has 43161 states and 47835 transitions. [2024-11-18 10:53:17,114 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 100.66666666666667) internal successors, (302), 3 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:53:17,118 INFO L276 IsEmpty]: Start isEmpty. Operand 43161 states and 47835 transitions. [2024-11-18 10:53:17,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 406 [2024-11-18 10:53:17,128 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:53:17,128 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 10:53:17,128 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-18 10:53:17,129 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:53:17,129 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:53:17,129 INFO L85 PathProgramCache]: Analyzing trace with hash -728615819, now seen corresponding path program 1 times [2024-11-18 10:53:17,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:53:17,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579920915] [2024-11-18 10:53:17,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:53:17,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:53:17,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:53:17,403 INFO L134 CoverageAnalysis]: Checked inductivity of 391 backedges. 309 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2024-11-18 10:53:17,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:53:17,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579920915] [2024-11-18 10:53:17,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1579920915] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:53:17,404 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:53:17,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 10:53:17,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460821172] [2024-11-18 10:53:17,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:53:17,405 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 10:53:17,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:53:17,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 10:53:17,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:53:17,406 INFO L87 Difference]: Start difference. First operand 43161 states and 47835 transitions. Second operand has 3 states, 3 states have (on average 108.0) internal successors, (324), 3 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:53:18,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:53:18,822 INFO L93 Difference]: Finished difference Result 98273 states and 108802 transitions. [2024-11-18 10:53:18,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 10:53:18,823 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 108.0) internal successors, (324), 3 states have internal predecessors, (324), 0 states have call successors, (0), 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 405 [2024-11-18 10:53:18,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:53:18,887 INFO L225 Difference]: With dead ends: 98273 [2024-11-18 10:53:18,887 INFO L226 Difference]: Without dead ends: 55114 [2024-11-18 10:53:18,917 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:53:18,918 INFO L432 NwaCegarLoop]: 594 mSDtfsCounter, 336 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 1287 mSolverCounterSat, 202 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 336 SdHoareTripleChecker+Valid, 636 SdHoareTripleChecker+Invalid, 1489 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 202 IncrementalHoareTripleChecker+Valid, 1287 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-18 10:53:18,918 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [336 Valid, 636 Invalid, 1489 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [202 Valid, 1287 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-18 10:53:18,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55114 states. [2024-11-18 10:53:19,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55114 to 52106. [2024-11-18 10:53:19,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52106 states, 52105 states have (on average 1.1077055944726995) internal successors, (57717), 52105 states have internal predecessors, (57717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:53:19,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52106 states to 52106 states and 57717 transitions. [2024-11-18 10:53:19,656 INFO L78 Accepts]: Start accepts. Automaton has 52106 states and 57717 transitions. Word has length 405 [2024-11-18 10:53:19,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:53:19,657 INFO L471 AbstractCegarLoop]: Abstraction has 52106 states and 57717 transitions. [2024-11-18 10:53:19,657 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 108.0) internal successors, (324), 3 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:53:19,657 INFO L276 IsEmpty]: Start isEmpty. Operand 52106 states and 57717 transitions. [2024-11-18 10:53:19,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 449 [2024-11-18 10:53:19,665 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:53:19,665 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-18 10:53:19,666 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-18 10:53:19,666 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:53:19,666 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:53:19,667 INFO L85 PathProgramCache]: Analyzing trace with hash 2010516335, now seen corresponding path program 1 times [2024-11-18 10:53:19,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:53:19,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952884200] [2024-11-18 10:53:19,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:53:19,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:53:19,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:53:20,281 INFO L134 CoverageAnalysis]: Checked inductivity of 434 backedges. 352 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2024-11-18 10:53:20,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:53:20,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952884200] [2024-11-18 10:53:20,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1952884200] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:53:20,282 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:53:20,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 10:53:20,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143547938] [2024-11-18 10:53:20,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:53:20,282 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 10:53:20,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:53:20,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 10:53:20,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-18 10:53:20,283 INFO L87 Difference]: Start difference. First operand 52106 states and 57717 transitions. Second operand has 4 states, 4 states have (on average 91.75) internal successors, (367), 4 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:53:22,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:53:22,679 INFO L93 Difference]: Finished difference Result 130213 states and 143849 transitions. [2024-11-18 10:53:22,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 10:53:22,679 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 91.75) internal successors, (367), 4 states have internal predecessors, (367), 0 states have call successors, (0), 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 448 [2024-11-18 10:53:22,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:53:22,764 INFO L225 Difference]: With dead ends: 130213 [2024-11-18 10:53:22,765 INFO L226 Difference]: Without dead ends: 77684 [2024-11-18 10:53:22,798 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-18 10:53:22,798 INFO L432 NwaCegarLoop]: 92 mSDtfsCounter, 780 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 2522 mSolverCounterSat, 460 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 780 SdHoareTripleChecker+Valid, 161 SdHoareTripleChecker+Invalid, 2982 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 460 IncrementalHoareTripleChecker+Valid, 2522 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-11-18 10:53:22,799 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [780 Valid, 161 Invalid, 2982 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [460 Valid, 2522 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-11-18 10:53:22,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77684 states. [2024-11-18 10:53:23,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77684 to 69116. [2024-11-18 10:53:23,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69116 states, 69115 states have (on average 1.1004991680532445) internal successors, (76061), 69115 states have internal predecessors, (76061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:53:23,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69116 states to 69116 states and 76061 transitions. [2024-11-18 10:53:23,570 INFO L78 Accepts]: Start accepts. Automaton has 69116 states and 76061 transitions. Word has length 448 [2024-11-18 10:53:23,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:53:23,571 INFO L471 AbstractCegarLoop]: Abstraction has 69116 states and 76061 transitions. [2024-11-18 10:53:23,571 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 91.75) internal successors, (367), 4 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:53:23,571 INFO L276 IsEmpty]: Start isEmpty. Operand 69116 states and 76061 transitions. [2024-11-18 10:53:23,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 456 [2024-11-18 10:53:23,759 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:53:23,759 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 10:53:23,760 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-18 10:53:23,760 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:53:23,760 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:53:23,760 INFO L85 PathProgramCache]: Analyzing trace with hash -647586439, now seen corresponding path program 1 times [2024-11-18 10:53:23,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:53:23,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942521281] [2024-11-18 10:53:23,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:53:23,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:53:23,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:53:24,205 INFO L134 CoverageAnalysis]: Checked inductivity of 391 backedges. 122 proven. 0 refuted. 0 times theorem prover too weak. 269 trivial. 0 not checked. [2024-11-18 10:53:24,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:53:24,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942521281] [2024-11-18 10:53:24,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1942521281] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:53:24,206 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:53:24,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 10:53:24,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456635079] [2024-11-18 10:53:24,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:53:24,207 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 10:53:24,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:53:24,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 10:53:24,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:53:24,208 INFO L87 Difference]: Start difference. First operand 69116 states and 76061 transitions. Second operand has 3 states, 3 states have (on average 90.0) internal successors, (270), 3 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:53:25,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:53:25,827 INFO L93 Difference]: Finished difference Result 153595 states and 169224 transitions. [2024-11-18 10:53:25,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 10:53:25,828 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 90.0) internal successors, (270), 3 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 455 [2024-11-18 10:53:25,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:53:25,915 INFO L225 Difference]: With dead ends: 153595 [2024-11-18 10:53:25,916 INFO L226 Difference]: Without dead ends: 84056 [2024-11-18 10:53:25,945 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:53:25,945 INFO L432 NwaCegarLoop]: 649 mSDtfsCounter, 446 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 1313 mSolverCounterSat, 132 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 446 SdHoareTripleChecker+Valid, 701 SdHoareTripleChecker+Invalid, 1445 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 132 IncrementalHoareTripleChecker+Valid, 1313 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-18 10:53:25,945 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [446 Valid, 701 Invalid, 1445 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [132 Valid, 1313 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-18 10:53:25,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84056 states. [2024-11-18 10:53:26,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84056 to 82333. [2024-11-18 10:53:26,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82333 states, 82332 states have (on average 1.1011149978137298) internal successors, (90657), 82332 states have internal predecessors, (90657), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:53:26,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82333 states to 82333 states and 90657 transitions. [2024-11-18 10:53:26,845 INFO L78 Accepts]: Start accepts. Automaton has 82333 states and 90657 transitions. Word has length 455 [2024-11-18 10:53:26,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:53:26,846 INFO L471 AbstractCegarLoop]: Abstraction has 82333 states and 90657 transitions. [2024-11-18 10:53:26,846 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 90.0) internal successors, (270), 3 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:53:26,846 INFO L276 IsEmpty]: Start isEmpty. Operand 82333 states and 90657 transitions. [2024-11-18 10:53:26,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 470 [2024-11-18 10:53:26,858 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:53:26,858 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 4, 3, 3, 3, 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] [2024-11-18 10:53:26,858 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-18 10:53:26,859 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:53:26,859 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:53:26,859 INFO L85 PathProgramCache]: Analyzing trace with hash -1334333508, now seen corresponding path program 1 times [2024-11-18 10:53:26,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:53:26,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258637565] [2024-11-18 10:53:26,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:53:26,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:53:27,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:53:27,306 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 543 proven. 0 refuted. 0 times theorem prover too weak. 381 trivial. 0 not checked. [2024-11-18 10:53:27,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:53:27,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258637565] [2024-11-18 10:53:27,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [258637565] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:53:27,306 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:53:27,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-18 10:53:27,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302574534] [2024-11-18 10:53:27,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:53:27,309 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 10:53:27,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:53:27,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 10:53:27,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:53:27,309 INFO L87 Difference]: Start difference. First operand 82333 states and 90657 transitions. Second operand has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 2 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:53:28,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:53:28,312 INFO L93 Difference]: Finished difference Result 162524 states and 178775 transitions. [2024-11-18 10:53:28,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 10:53:28,312 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 2 states have internal predecessors, (206), 0 states have call successors, (0), 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 [2024-11-18 10:53:28,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:53:28,400 INFO L225 Difference]: With dead ends: 162524 [2024-11-18 10:53:28,400 INFO L226 Difference]: Without dead ends: 80193 [2024-11-18 10:53:28,447 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:53:28,447 INFO L432 NwaCegarLoop]: 103 mSDtfsCounter, 622 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 649 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 622 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 654 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 649 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-18 10:53:28,448 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [622 Valid, 103 Invalid, 654 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 649 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-18 10:53:28,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80193 states. [2024-11-18 10:53:29,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80193 to 80178. [2024-11-18 10:53:29,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80178 states, 80177 states have (on average 1.0985569427641344) internal successors, (88079), 80177 states have internal predecessors, (88079), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:53:29,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80178 states to 80178 states and 88079 transitions. [2024-11-18 10:53:29,722 INFO L78 Accepts]: Start accepts. Automaton has 80178 states and 88079 transitions. Word has length 469 [2024-11-18 10:53:29,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:53:29,723 INFO L471 AbstractCegarLoop]: Abstraction has 80178 states and 88079 transitions. [2024-11-18 10:53:29,723 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 2 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:53:29,723 INFO L276 IsEmpty]: Start isEmpty. Operand 80178 states and 88079 transitions. [2024-11-18 10:53:29,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 488 [2024-11-18 10:53:29,746 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:53:29,746 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 10:53:29,746 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-18 10:53:29,746 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:53:29,746 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:53:29,747 INFO L85 PathProgramCache]: Analyzing trace with hash 1193487407, now seen corresponding path program 1 times [2024-11-18 10:53:29,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:53:29,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063094022] [2024-11-18 10:53:29,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:53:29,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:53:29,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:53:30,317 INFO L134 CoverageAnalysis]: Checked inductivity of 670 backedges. 425 proven. 0 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2024-11-18 10:53:30,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:53:30,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063094022] [2024-11-18 10:53:30,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1063094022] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:53:30,317 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:53:30,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 10:53:30,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259837430] [2024-11-18 10:53:30,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:53:30,318 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 10:53:30,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:53:30,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 10:53:30,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-18 10:53:30,319 INFO L87 Difference]: Start difference. First operand 80178 states and 88079 transitions. Second operand has 4 states, 4 states have (on average 81.25) internal successors, (325), 4 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:53:32,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:53:32,641 INFO L93 Difference]: Finished difference Result 189350 states and 207625 transitions. [2024-11-18 10:53:32,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 10:53:32,641 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 81.25) internal successors, (325), 4 states have internal predecessors, (325), 0 states have call successors, (0), 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 487 [2024-11-18 10:53:32,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:53:32,781 INFO L225 Difference]: With dead ends: 189350 [2024-11-18 10:53:32,781 INFO L226 Difference]: Without dead ends: 104916 [2024-11-18 10:53:32,831 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-18 10:53:32,831 INFO L432 NwaCegarLoop]: 146 mSDtfsCounter, 746 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 2449 mSolverCounterSat, 403 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 746 SdHoareTripleChecker+Valid, 220 SdHoareTripleChecker+Invalid, 2852 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 403 IncrementalHoareTripleChecker+Valid, 2449 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-11-18 10:53:32,832 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [746 Valid, 220 Invalid, 2852 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [403 Valid, 2449 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-11-18 10:53:32,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104916 states. [2024-11-18 10:53:34,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104916 to 100611. [2024-11-18 10:53:34,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100611 states, 100610 states have (on average 1.0951197694066197) internal successors, (110180), 100610 states have internal predecessors, (110180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:53:34,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100611 states to 100611 states and 110180 transitions. [2024-11-18 10:53:34,242 INFO L78 Accepts]: Start accepts. Automaton has 100611 states and 110180 transitions. Word has length 487 [2024-11-18 10:53:34,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:53:34,243 INFO L471 AbstractCegarLoop]: Abstraction has 100611 states and 110180 transitions. [2024-11-18 10:53:34,243 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 81.25) internal successors, (325), 4 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:53:34,243 INFO L276 IsEmpty]: Start isEmpty. Operand 100611 states and 110180 transitions. [2024-11-18 10:53:34,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 493 [2024-11-18 10:53:34,258 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:53:34,259 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 4, 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] [2024-11-18 10:53:34,259 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-18 10:53:34,259 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:53:34,259 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:53:34,259 INFO L85 PathProgramCache]: Analyzing trace with hash -966903065, now seen corresponding path program 1 times [2024-11-18 10:53:34,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:53:34,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112301423] [2024-11-18 10:53:34,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:53:34,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:53:34,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:53:34,658 INFO L134 CoverageAnalysis]: Checked inductivity of 964 backedges. 654 proven. 0 refuted. 0 times theorem prover too weak. 310 trivial. 0 not checked. [2024-11-18 10:53:34,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:53:34,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112301423] [2024-11-18 10:53:34,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1112301423] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:53:34,658 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:53:34,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 10:53:34,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027640690] [2024-11-18 10:53:34,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:53:34,659 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 10:53:34,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:53:34,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 10:53:34,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:53:34,660 INFO L87 Difference]: Start difference. First operand 100611 states and 110180 transitions. Second operand has 3 states, 3 states have (on average 89.0) internal successors, (267), 3 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:53:36,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:53:36,371 INFO L93 Difference]: Finished difference Result 213971 states and 234379 transitions. [2024-11-18 10:53:36,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 10:53:36,371 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 89.0) internal successors, (267), 3 states have internal predecessors, (267), 0 states have call successors, (0), 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 492 [2024-11-18 10:53:36,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:53:36,509 INFO L225 Difference]: With dead ends: 213971 [2024-11-18 10:53:36,509 INFO L226 Difference]: Without dead ends: 113362 [2024-11-18 10:53:36,575 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:53:36,575 INFO L432 NwaCegarLoop]: 274 mSDtfsCounter, 399 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 1164 mSolverCounterSat, 174 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 399 SdHoareTripleChecker+Valid, 320 SdHoareTripleChecker+Invalid, 1338 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 174 IncrementalHoareTripleChecker+Valid, 1164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-18 10:53:36,575 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [399 Valid, 320 Invalid, 1338 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [174 Valid, 1164 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-18 10:53:36,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113362 states. [2024-11-18 10:53:37,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113362 to 110800. [2024-11-18 10:53:37,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110800 states, 110799 states have (on average 1.0898564066462693) internal successors, (120755), 110799 states have internal predecessors, (120755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:53:38,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110800 states to 110800 states and 120755 transitions. [2024-11-18 10:53:38,053 INFO L78 Accepts]: Start accepts. Automaton has 110800 states and 120755 transitions. Word has length 492 [2024-11-18 10:53:38,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:53:38,054 INFO L471 AbstractCegarLoop]: Abstraction has 110800 states and 120755 transitions. [2024-11-18 10:53:38,054 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 89.0) internal successors, (267), 3 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:53:38,054 INFO L276 IsEmpty]: Start isEmpty. Operand 110800 states and 120755 transitions. [2024-11-18 10:53:38,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 504 [2024-11-18 10:53:38,066 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:53:38,066 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 10:53:38,066 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-18 10:53:38,066 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:53:38,066 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:53:38,067 INFO L85 PathProgramCache]: Analyzing trace with hash 56960881, now seen corresponding path program 1 times [2024-11-18 10:53:38,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:53:38,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807544901] [2024-11-18 10:53:38,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:53:38,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:53:38,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:53:38,874 INFO L134 CoverageAnalysis]: Checked inductivity of 964 backedges. 654 proven. 0 refuted. 0 times theorem prover too weak. 310 trivial. 0 not checked. [2024-11-18 10:53:38,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:53:38,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1807544901] [2024-11-18 10:53:38,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1807544901] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:53:38,875 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:53:38,875 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 10:53:38,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573799955] [2024-11-18 10:53:38,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:53:38,876 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 10:53:38,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:53:38,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 10:53:38,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-18 10:53:38,877 INFO L87 Difference]: Start difference. First operand 110800 states and 120755 transitions. Second operand has 4 states, 4 states have (on average 69.5) internal successors, (278), 4 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:53:41,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:53:41,267 INFO L93 Difference]: Finished difference Result 232233 states and 253625 transitions. [2024-11-18 10:53:41,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 10:53:41,268 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 69.5) internal successors, (278), 4 states have internal predecessors, (278), 0 states have call successors, (0), 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 503 [2024-11-18 10:53:41,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:53:41,407 INFO L225 Difference]: With dead ends: 232233 [2024-11-18 10:53:41,407 INFO L226 Difference]: Without dead ends: 121010 [2024-11-18 10:53:41,460 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-18 10:53:41,460 INFO L432 NwaCegarLoop]: 684 mSDtfsCounter, 827 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 2092 mSolverCounterSat, 309 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 827 SdHoareTripleChecker+Valid, 748 SdHoareTripleChecker+Invalid, 2401 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 309 IncrementalHoareTripleChecker+Valid, 2092 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-18 10:53:41,460 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [827 Valid, 748 Invalid, 2401 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [309 Valid, 2092 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-18 10:53:41,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121010 states. [2024-11-18 10:53:42,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121010 to 106945. [2024-11-18 10:53:42,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106945 states, 106944 states have (on average 1.0883640035906643) internal successors, (116394), 106944 states have internal predecessors, (116394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:53:42,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106945 states to 106945 states and 116394 transitions. [2024-11-18 10:53:42,713 INFO L78 Accepts]: Start accepts. Automaton has 106945 states and 116394 transitions. Word has length 503 [2024-11-18 10:53:42,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:53:42,714 INFO L471 AbstractCegarLoop]: Abstraction has 106945 states and 116394 transitions. [2024-11-18 10:53:42,714 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 69.5) internal successors, (278), 4 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:53:42,714 INFO L276 IsEmpty]: Start isEmpty. Operand 106945 states and 116394 transitions. [2024-11-18 10:53:43,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 533 [2024-11-18 10:53:43,077 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:53:43,077 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 10:53:43,078 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-18 10:53:43,078 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:53:43,078 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:53:43,078 INFO L85 PathProgramCache]: Analyzing trace with hash -1996166593, now seen corresponding path program 1 times [2024-11-18 10:53:43,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:53:43,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1757773852] [2024-11-18 10:53:43,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:53:43,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:53:43,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:53:44,014 INFO L134 CoverageAnalysis]: Checked inductivity of 737 backedges. 427 proven. 41 refuted. 0 times theorem prover too weak. 269 trivial. 0 not checked. [2024-11-18 10:53:44,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:53:44,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1757773852] [2024-11-18 10:53:44,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1757773852] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 10:53:44,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1760292929] [2024-11-18 10:53:44,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:53:44,015 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 10:53:44,016 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 10:53:44,017 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 10:53:44,018 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-18 10:53:44,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:53:44,190 INFO L255 TraceCheckSpWp]: Trace formula consists of 678 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-18 10:53:44,200 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 10:53:44,544 INFO L134 CoverageAnalysis]: Checked inductivity of 737 backedges. 455 proven. 82 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2024-11-18 10:53:44,544 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 10:53:45,425 INFO L134 CoverageAnalysis]: Checked inductivity of 737 backedges. 455 proven. 82 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2024-11-18 10:53:45,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1760292929] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 10:53:45,426 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 10:53:45,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 3, 3] total 9 [2024-11-18 10:53:45,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368648699] [2024-11-18 10:53:45,427 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 10:53:45,428 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-18 10:53:45,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:53:45,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-18 10:53:45,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-11-18 10:53:45,430 INFO L87 Difference]: Start difference. First operand 106945 states and 116394 transitions. Second operand has 9 states, 9 states have (on average 101.11111111111111) internal successors, (910), 9 states have internal predecessors, (910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:53:55,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:53:55,549 INFO L93 Difference]: Finished difference Result 279039 states and 303155 transitions. [2024-11-18 10:53:55,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-18 10:53:55,549 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 101.11111111111111) internal successors, (910), 9 states have internal predecessors, (910), 0 states have call successors, (0), 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 532 [2024-11-18 10:53:55,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:53:55,719 INFO L225 Difference]: With dead ends: 279039 [2024-11-18 10:53:55,719 INFO L226 Difference]: Without dead ends: 166556 [2024-11-18 10:53:55,764 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1099 GetRequests, 1076 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=164, Invalid=436, Unknown=0, NotChecked=0, Total=600 [2024-11-18 10:53:55,765 INFO L432 NwaCegarLoop]: 82 mSDtfsCounter, 10027 mSDsluCounter, 308 mSDsCounter, 0 mSdLazyCounter, 14012 mSolverCounterSat, 2213 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10027 SdHoareTripleChecker+Valid, 390 SdHoareTripleChecker+Invalid, 16225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2213 IncrementalHoareTripleChecker+Valid, 14012 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.9s IncrementalHoareTripleChecker+Time [2024-11-18 10:53:55,765 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10027 Valid, 390 Invalid, 16225 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2213 Valid, 14012 Invalid, 0 Unknown, 0 Unchecked, 8.9s Time] [2024-11-18 10:53:55,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166556 states. [2024-11-18 10:53:57,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166556 to 141824. [2024-11-18 10:53:57,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141824 states, 141823 states have (on average 1.0730558513076158) internal successors, (152184), 141823 states have internal predecessors, (152184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:53:57,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141824 states to 141824 states and 152184 transitions. [2024-11-18 10:53:57,589 INFO L78 Accepts]: Start accepts. Automaton has 141824 states and 152184 transitions. Word has length 532 [2024-11-18 10:53:57,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:53:57,589 INFO L471 AbstractCegarLoop]: Abstraction has 141824 states and 152184 transitions. [2024-11-18 10:53:57,589 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 101.11111111111111) internal successors, (910), 9 states have internal predecessors, (910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:53:57,589 INFO L276 IsEmpty]: Start isEmpty. Operand 141824 states and 152184 transitions. [2024-11-18 10:53:57,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 615 [2024-11-18 10:53:57,602 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:53:57,602 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 10:53:57,616 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-18 10:53:57,803 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 10:53:57,803 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:53:57,804 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:53:57,804 INFO L85 PathProgramCache]: Analyzing trace with hash 118337143, now seen corresponding path program 1 times [2024-11-18 10:53:57,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:53:57,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735204153] [2024-11-18 10:53:57,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:53:57,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:53:57,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:53:58,454 INFO L134 CoverageAnalysis]: Checked inductivity of 460 backedges. 378 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2024-11-18 10:53:58,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:53:58,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735204153] [2024-11-18 10:53:58,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1735204153] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:53:58,454 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:53:58,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 10:53:58,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506536693] [2024-11-18 10:53:58,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:53:58,456 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 10:53:58,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:53:58,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 10:53:58,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:53:58,456 INFO L87 Difference]: Start difference. First operand 141824 states and 152184 transitions. Second operand has 3 states, 3 states have (on average 177.66666666666666) internal successors, (533), 3 states have internal predecessors, (533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:54:00,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:54:00,384 INFO L93 Difference]: Finished difference Result 284916 states and 305615 transitions. [2024-11-18 10:54:00,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 10:54:00,384 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 177.66666666666666) internal successors, (533), 3 states have internal predecessors, (533), 0 states have call successors, (0), 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 614 [2024-11-18 10:54:00,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:54:00,566 INFO L225 Difference]: With dead ends: 284916 [2024-11-18 10:54:00,566 INFO L226 Difference]: Without dead ends: 143944 [2024-11-18 10:54:00,628 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:54:00,628 INFO L432 NwaCegarLoop]: 629 mSDtfsCounter, 291 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 1154 mSolverCounterSat, 134 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 291 SdHoareTripleChecker+Valid, 671 SdHoareTripleChecker+Invalid, 1288 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 134 IncrementalHoareTripleChecker+Valid, 1154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-18 10:54:00,629 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [291 Valid, 671 Invalid, 1288 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [134 Valid, 1154 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-18 10:54:00,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143944 states. [2024-11-18 10:54:02,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143944 to 142239. [2024-11-18 10:54:02,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142239 states, 142238 states have (on average 1.069306373824154) internal successors, (152096), 142238 states have internal predecessors, (152096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:54:02,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142239 states to 142239 states and 152096 transitions. [2024-11-18 10:54:02,696 INFO L78 Accepts]: Start accepts. Automaton has 142239 states and 152096 transitions. Word has length 614 [2024-11-18 10:54:02,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:54:02,696 INFO L471 AbstractCegarLoop]: Abstraction has 142239 states and 152096 transitions. [2024-11-18 10:54:02,696 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 177.66666666666666) internal successors, (533), 3 states have internal predecessors, (533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:54:02,697 INFO L276 IsEmpty]: Start isEmpty. Operand 142239 states and 152096 transitions. [2024-11-18 10:54:02,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 693 [2024-11-18 10:54:02,718 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:54:02,719 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-18 10:54:02,719 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-18 10:54:02,719 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:54:02,719 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:54:02,719 INFO L85 PathProgramCache]: Analyzing trace with hash 1585088990, now seen corresponding path program 1 times [2024-11-18 10:54:02,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:54:02,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262869333] [2024-11-18 10:54:02,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:54:02,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:54:02,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:54:03,069 INFO L134 CoverageAnalysis]: Checked inductivity of 1176 backedges. 947 proven. 0 refuted. 0 times theorem prover too weak. 229 trivial. 0 not checked. [2024-11-18 10:54:03,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:54:03,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1262869333] [2024-11-18 10:54:03,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1262869333] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:54:03,070 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:54:03,070 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 10:54:03,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187079809] [2024-11-18 10:54:03,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:54:03,071 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 10:54:03,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:54:03,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 10:54:03,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-18 10:54:03,072 INFO L87 Difference]: Start difference. First operand 142239 states and 152096 transitions. Second operand has 4 states, 4 states have (on average 134.5) internal successors, (538), 4 states have internal predecessors, (538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:54:05,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:54:05,653 INFO L93 Difference]: Finished difference Result 322368 states and 344571 transitions. [2024-11-18 10:54:05,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 10:54:05,653 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 134.5) internal successors, (538), 4 states have internal predecessors, (538), 0 states have call successors, (0), 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 692 [2024-11-18 10:54:05,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:54:05,872 INFO L225 Difference]: With dead ends: 322368 [2024-11-18 10:54:05,872 INFO L226 Difference]: Without dead ends: 180131 [2024-11-18 10:54:05,967 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-18 10:54:05,968 INFO L432 NwaCegarLoop]: 121 mSDtfsCounter, 611 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 2269 mSolverCounterSat, 392 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 611 SdHoareTripleChecker+Valid, 193 SdHoareTripleChecker+Invalid, 2661 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 392 IncrementalHoareTripleChecker+Valid, 2269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-11-18 10:54:05,968 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [611 Valid, 193 Invalid, 2661 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [392 Valid, 2269 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-11-18 10:54:06,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180131 states. [2024-11-18 10:54:08,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180131 to 171196. [2024-11-18 10:54:08,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171196 states, 171195 states have (on average 1.0670872396974211) internal successors, (182680), 171195 states have internal predecessors, (182680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)