./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem16_label37.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/Problem16_label37.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 0c9b36c4432c83400aecd1170e3c902f5356c89b28a319ce0e390f2a9fbc6f35 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-18 10:46:15,163 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-18 10:46:15,243 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-18 10:46:15,251 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-18 10:46:15,252 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-18 10:46:15,279 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-18 10:46:15,279 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-18 10:46:15,279 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-18 10:46:15,280 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-18 10:46:15,284 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-18 10:46:15,284 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-18 10:46:15,285 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-18 10:46:15,285 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-18 10:46:15,286 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-18 10:46:15,286 INFO L153 SettingsManager]: * Use SBE=true [2024-11-18 10:46:15,287 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-18 10:46:15,288 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-18 10:46:15,288 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-18 10:46:15,288 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-18 10:46:15,289 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-18 10:46:15,289 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-18 10:46:15,289 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-18 10:46:15,290 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-18 10:46:15,290 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-18 10:46:15,290 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-18 10:46:15,290 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-18 10:46:15,291 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-18 10:46:15,291 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-18 10:46:15,291 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-18 10:46:15,291 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-18 10:46:15,292 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-18 10:46:15,292 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-18 10:46:15,292 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 10:46:15,293 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-18 10:46:15,293 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-18 10:46:15,293 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-18 10:46:15,293 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-18 10:46:15,294 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-18 10:46:15,294 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-18 10:46:15,294 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-18 10:46:15,295 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-18 10:46:15,296 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-18 10:46:15,296 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0c9b36c4432c83400aecd1170e3c902f5356c89b28a319ce0e390f2a9fbc6f35 [2024-11-18 10:46:15,564 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-18 10:46:15,590 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-18 10:46:15,593 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-18 10:46:15,594 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-18 10:46:15,595 INFO L274 PluginConnector]: CDTParser initialized [2024-11-18 10:46:15,597 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem16_label37.c [2024-11-18 10:46:17,003 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-18 10:46:17,346 INFO L384 CDTParser]: Found 1 translation units. [2024-11-18 10:46:17,347 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem16_label37.c [2024-11-18 10:46:17,369 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c42dad2ba/87b03e98e83441a4b05749e2fa5a912f/FLAGe974c02f3 [2024-11-18 10:46:17,591 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c42dad2ba/87b03e98e83441a4b05749e2fa5a912f [2024-11-18 10:46:17,593 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-18 10:46:17,595 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-18 10:46:17,597 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-18 10:46:17,597 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-18 10:46:17,602 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-18 10:46:17,603 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 10:46:17" (1/1) ... [2024-11-18 10:46:17,604 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@311b2d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:46:17, skipping insertion in model container [2024-11-18 10:46:17,606 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 10:46:17" (1/1) ... [2024-11-18 10:46:17,670 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-18 10:46:17,898 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem16_label37.c[2305,2318] [2024-11-18 10:46:18,261 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 10:46:18,273 INFO L200 MainTranslator]: Completed pre-run [2024-11-18 10:46:18,293 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem16_label37.c[2305,2318] [2024-11-18 10:46:18,457 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 10:46:18,482 INFO L204 MainTranslator]: Completed translation [2024-11-18 10:46:18,483 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:46:18 WrapperNode [2024-11-18 10:46:18,483 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-18 10:46:18,484 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-18 10:46:18,485 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-18 10:46:18,485 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-18 10:46:18,492 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:46:18" (1/1) ... [2024-11-18 10:46:18,527 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:46:18" (1/1) ... [2024-11-18 10:46:18,657 INFO L138 Inliner]: procedures = 15, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 1770 [2024-11-18 10:46:18,658 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-18 10:46:18,659 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-18 10:46:18,659 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-18 10:46:18,659 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-18 10:46:18,670 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:46:18" (1/1) ... [2024-11-18 10:46:18,671 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:46:18" (1/1) ... [2024-11-18 10:46:18,693 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:46:18" (1/1) ... [2024-11-18 10:46:18,834 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 10:46:18,835 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:46:18" (1/1) ... [2024-11-18 10:46:18,835 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:46:18" (1/1) ... [2024-11-18 10:46:18,890 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:46:18" (1/1) ... [2024-11-18 10:46:18,911 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:46:18" (1/1) ... [2024-11-18 10:46:18,937 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:46:18" (1/1) ... [2024-11-18 10:46:18,949 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:46:18" (1/1) ... [2024-11-18 10:46:18,972 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-18 10:46:18,974 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-18 10:46:18,974 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-18 10:46:18,975 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-18 10:46:18,976 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:46:18" (1/1) ... [2024-11-18 10:46:18,982 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 10:46:18,994 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 10:46:19,013 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 10:46:19,020 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 10:46:19,066 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-18 10:46:19,067 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-18 10:46:19,068 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-18 10:46:19,068 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-18 10:46:19,185 INFO L238 CfgBuilder]: Building ICFG [2024-11-18 10:46:19,187 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-18 10:46:21,218 INFO L? ?]: Removed 276 outVars from TransFormulas that were not future-live. [2024-11-18 10:46:21,219 INFO L287 CfgBuilder]: Performing block encoding [2024-11-18 10:46:21,239 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-18 10:46:21,239 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-18 10:46:21,240 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 10:46:21 BoogieIcfgContainer [2024-11-18 10:46:21,240 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-18 10:46:21,245 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-18 10:46:21,245 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-18 10:46:21,249 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-18 10:46:21,249 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 10:46:17" (1/3) ... [2024-11-18 10:46:21,250 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ebbd87f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 10:46:21, skipping insertion in model container [2024-11-18 10:46:21,251 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:46:18" (2/3) ... [2024-11-18 10:46:21,251 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ebbd87f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 10:46:21, skipping insertion in model container [2024-11-18 10:46:21,251 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 10:46:21" (3/3) ... [2024-11-18 10:46:21,253 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem16_label37.c [2024-11-18 10:46:21,270 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-18 10:46:21,271 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-18 10:46:21,359 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-18 10:46:21,368 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;@22c748bf, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-18 10:46:21,369 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-18 10:46:21,376 INFO L276 IsEmpty]: Start isEmpty. Operand has 396 states, 394 states have (on average 1.8350253807106598) internal successors, (723), 395 states have internal predecessors, (723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:46:21,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-18 10:46:21,384 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:46:21,387 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] [2024-11-18 10:46:21,387 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:46:21,393 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:46:21,393 INFO L85 PathProgramCache]: Analyzing trace with hash -279853278, now seen corresponding path program 1 times [2024-11-18 10:46:21,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:46:21,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168211517] [2024-11-18 10:46:21,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:46:21,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:46:21,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:46:21,641 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 10:46:21,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:46:21,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168211517] [2024-11-18 10:46:21,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1168211517] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:46:21,643 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:46:21,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-18 10:46:21,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450556261] [2024-11-18 10:46:21,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:46:21,649 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 10:46:21,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:46:21,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 10:46:21,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:46:21,672 INFO L87 Difference]: Start difference. First operand has 396 states, 394 states have (on average 1.8350253807106598) internal successors, (723), 395 states have internal predecessors, (723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 2 states have internal predecessors, (20), 0 states have call successors, (0), 0 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 10:46:23,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:46:23,463 INFO L93 Difference]: Finished difference Result 1137 states and 2118 transitions. [2024-11-18 10:46:23,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 10:46:23,466 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 2 states have internal predecessors, (20), 0 states have call successors, (0), 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 20 [2024-11-18 10:46:23,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:46:23,480 INFO L225 Difference]: With dead ends: 1137 [2024-11-18 10:46:23,481 INFO L226 Difference]: Without dead ends: 662 [2024-11-18 10:46:23,485 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 10:46:23,488 INFO L432 NwaCegarLoop]: 106 mSDtfsCounter, 364 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 1009 mSolverCounterSat, 429 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 364 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 1438 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 429 IncrementalHoareTripleChecker+Valid, 1009 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-18 10:46:23,489 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [364 Valid, 114 Invalid, 1438 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [429 Valid, 1009 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-18 10:46:23,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 662 states. [2024-11-18 10:46:23,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 662 to 662. [2024-11-18 10:46:23,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 662 states, 661 states have (on average 1.7004538577912254) internal successors, (1124), 661 states have internal predecessors, (1124), 0 states have call successors, (0), 0 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 10:46:23,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 662 states to 662 states and 1124 transitions. [2024-11-18 10:46:23,576 INFO L78 Accepts]: Start accepts. Automaton has 662 states and 1124 transitions. Word has length 20 [2024-11-18 10:46:23,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:46:23,577 INFO L471 AbstractCegarLoop]: Abstraction has 662 states and 1124 transitions. [2024-11-18 10:46:23,577 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 2 states have internal predecessors, (20), 0 states have call successors, (0), 0 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 10:46:23,578 INFO L276 IsEmpty]: Start isEmpty. Operand 662 states and 1124 transitions. [2024-11-18 10:46:23,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2024-11-18 10:46:23,580 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:46:23,580 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-18 10:46:23,581 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-18 10:46:23,581 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:46:23,582 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:46:23,582 INFO L85 PathProgramCache]: Analyzing trace with hash -2108596511, now seen corresponding path program 1 times [2024-11-18 10:46:23,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:46:23,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082841738] [2024-11-18 10:46:23,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:46:23,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:46:23,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:46:23,840 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 10:46:23,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:46:23,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082841738] [2024-11-18 10:46:23,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2082841738] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:46:23,842 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:46:23,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-18 10:46:23,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923437449] [2024-11-18 10:46:23,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:46:23,844 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 10:46:23,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:46:23,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 10:46:23,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:46:23,847 INFO L87 Difference]: Start difference. First operand 662 states and 1124 transitions. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 2 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:46:25,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:46:25,082 INFO L93 Difference]: Finished difference Result 1980 states and 3367 transitions. [2024-11-18 10:46:25,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 10:46:25,083 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 2 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2024-11-18 10:46:25,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:46:25,089 INFO L225 Difference]: With dead ends: 1980 [2024-11-18 10:46:25,090 INFO L226 Difference]: Without dead ends: 1320 [2024-11-18 10:46:25,092 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 10:46:25,094 INFO L432 NwaCegarLoop]: 73 mSDtfsCounter, 343 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 882 mSolverCounterSat, 401 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 343 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 1283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 401 IncrementalHoareTripleChecker+Valid, 882 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-18 10:46:25,094 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [343 Valid, 77 Invalid, 1283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [401 Valid, 882 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-18 10:46:25,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1320 states. [2024-11-18 10:46:25,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1320 to 1320. [2024-11-18 10:46:25,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1320 states, 1319 states have (on average 1.620166793025019) internal successors, (2137), 1319 states have internal predecessors, (2137), 0 states have call successors, (0), 0 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 10:46:25,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1320 states to 1320 states and 2137 transitions. [2024-11-18 10:46:25,133 INFO L78 Accepts]: Start accepts. Automaton has 1320 states and 2137 transitions. Word has length 86 [2024-11-18 10:46:25,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:46:25,134 INFO L471 AbstractCegarLoop]: Abstraction has 1320 states and 2137 transitions. [2024-11-18 10:46:25,134 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 2 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:46:25,134 INFO L276 IsEmpty]: Start isEmpty. Operand 1320 states and 2137 transitions. [2024-11-18 10:46:25,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2024-11-18 10:46:25,136 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:46:25,137 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-18 10:46:25,137 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-18 10:46:25,137 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:46:25,138 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:46:25,138 INFO L85 PathProgramCache]: Analyzing trace with hash -1344907261, now seen corresponding path program 1 times [2024-11-18 10:46:25,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:46:25,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058025487] [2024-11-18 10:46:25,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:46:25,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:46:25,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:46:25,322 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 10:46:25,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:46:25,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058025487] [2024-11-18 10:46:25,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2058025487] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:46:25,323 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:46:25,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-18 10:46:25,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237167597] [2024-11-18 10:46:25,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:46:25,324 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 10:46:25,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:46:25,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 10:46:25,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:46:25,326 INFO L87 Difference]: Start difference. First operand 1320 states and 2137 transitions. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 2 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:46:26,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:46:26,662 INFO L93 Difference]: Finished difference Result 3296 states and 5285 transitions. [2024-11-18 10:46:26,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 10:46:26,663 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 2 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 87 [2024-11-18 10:46:26,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:46:26,672 INFO L225 Difference]: With dead ends: 3296 [2024-11-18 10:46:26,673 INFO L226 Difference]: Without dead ends: 1978 [2024-11-18 10:46:26,676 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 10:46:26,678 INFO L432 NwaCegarLoop]: 151 mSDtfsCounter, 381 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 811 mSolverCounterSat, 307 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 381 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 1118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 307 IncrementalHoareTripleChecker+Valid, 811 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-18 10:46:26,680 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [381 Valid, 155 Invalid, 1118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [307 Valid, 811 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-18 10:46:26,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1978 states. [2024-11-18 10:46:26,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1978 to 1978. [2024-11-18 10:46:26,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1978 states, 1977 states have (on average 1.3323216995447649) internal successors, (2634), 1977 states have internal predecessors, (2634), 0 states have call successors, (0), 0 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 10:46:26,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1978 states to 1978 states and 2634 transitions. [2024-11-18 10:46:26,720 INFO L78 Accepts]: Start accepts. Automaton has 1978 states and 2634 transitions. Word has length 87 [2024-11-18 10:46:26,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:46:26,721 INFO L471 AbstractCegarLoop]: Abstraction has 1978 states and 2634 transitions. [2024-11-18 10:46:26,721 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 2 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:46:26,722 INFO L276 IsEmpty]: Start isEmpty. Operand 1978 states and 2634 transitions. [2024-11-18 10:46:26,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2024-11-18 10:46:26,724 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:46:26,724 INFO L215 NwaCegarLoop]: trace histogram [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 10:46:26,725 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-18 10:46:26,725 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:46:26,726 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:46:26,726 INFO L85 PathProgramCache]: Analyzing trace with hash 1874433309, now seen corresponding path program 1 times [2024-11-18 10:46:26,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:46:26,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165095418] [2024-11-18 10:46:26,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:46:26,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:46:26,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:46:27,001 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 10:46:27,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:46:27,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165095418] [2024-11-18 10:46:27,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [165095418] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:46:27,003 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:46:27,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-18 10:46:27,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539806996] [2024-11-18 10:46:27,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:46:27,005 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 10:46:27,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:46:27,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 10:46:27,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:46:27,007 INFO L87 Difference]: Start difference. First operand 1978 states and 2634 transitions. Second operand has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 2 states have internal predecessors, (179), 0 states have call successors, (0), 0 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 10:46:28,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:46:28,211 INFO L93 Difference]: Finished difference Result 5928 states and 7897 transitions. [2024-11-18 10:46:28,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 10:46:28,212 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 2 states have internal predecessors, (179), 0 states have call successors, (0), 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 10:46:28,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:46:28,226 INFO L225 Difference]: With dead ends: 5928 [2024-11-18 10:46:28,226 INFO L226 Difference]: Without dead ends: 3952 [2024-11-18 10:46:28,230 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 10:46:28,231 INFO L432 NwaCegarLoop]: 254 mSDtfsCounter, 181 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 825 mSolverCounterSat, 380 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 181 SdHoareTripleChecker+Valid, 259 SdHoareTripleChecker+Invalid, 1205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 380 IncrementalHoareTripleChecker+Valid, 825 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-18 10:46:28,231 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [181 Valid, 259 Invalid, 1205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [380 Valid, 825 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-18 10:46:28,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3952 states. [2024-11-18 10:46:28,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3952 to 3952. [2024-11-18 10:46:28,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3952 states, 3951 states have (on average 1.216400911161731) internal successors, (4806), 3951 states have internal predecessors, (4806), 0 states have call successors, (0), 0 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 10:46:28,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3952 states to 3952 states and 4806 transitions. [2024-11-18 10:46:28,294 INFO L78 Accepts]: Start accepts. Automaton has 3952 states and 4806 transitions. Word has length 179 [2024-11-18 10:46:28,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:46:28,296 INFO L471 AbstractCegarLoop]: Abstraction has 3952 states and 4806 transitions. [2024-11-18 10:46:28,297 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 2 states have internal predecessors, (179), 0 states have call successors, (0), 0 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 10:46:28,297 INFO L276 IsEmpty]: Start isEmpty. Operand 3952 states and 4806 transitions. [2024-11-18 10:46:28,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2024-11-18 10:46:28,305 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:46:28,306 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:46:28,306 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-18 10:46:28,306 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:46:28,307 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:46:28,307 INFO L85 PathProgramCache]: Analyzing trace with hash -820593338, now seen corresponding path program 1 times [2024-11-18 10:46:28,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:46:28,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172868837] [2024-11-18 10:46:28,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:46:28,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:46:28,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:46:28,936 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 10:46:28,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:46:28,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172868837] [2024-11-18 10:46:28,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1172868837] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:46:28,937 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:46:28,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 10:46:28,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483491874] [2024-11-18 10:46:28,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:46:28,938 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 10:46:28,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:46:28,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 10:46:28,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 10:46:28,941 INFO L87 Difference]: Start difference. First operand 3952 states and 4806 transitions. Second operand has 4 states, 4 states have (on average 66.25) internal successors, (265), 3 states have internal predecessors, (265), 0 states have call successors, (0), 0 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 10:46:30,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:46:30,077 INFO L93 Difference]: Finished difference Result 8231 states and 9951 transitions. [2024-11-18 10:46:30,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 10:46:30,077 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 66.25) internal successors, (265), 3 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 265 [2024-11-18 10:46:30,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:46:30,092 INFO L225 Difference]: With dead ends: 8231 [2024-11-18 10:46:30,092 INFO L226 Difference]: Without dead ends: 4281 [2024-11-18 10:46:30,098 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-18 10:46:30,099 INFO L432 NwaCegarLoop]: 267 mSDtfsCounter, 127 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 1469 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 322 SdHoareTripleChecker+Invalid, 1474 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 1469 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-18 10:46:30,099 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [127 Valid, 322 Invalid, 1474 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 1469 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-18 10:46:30,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4281 states. [2024-11-18 10:46:30,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4281 to 4281. [2024-11-18 10:46:30,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4281 states, 4280 states have (on average 1.2011682242990653) internal successors, (5141), 4280 states have internal predecessors, (5141), 0 states have call successors, (0), 0 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 10:46:30,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4281 states to 4281 states and 5141 transitions. [2024-11-18 10:46:30,171 INFO L78 Accepts]: Start accepts. Automaton has 4281 states and 5141 transitions. Word has length 265 [2024-11-18 10:46:30,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:46:30,172 INFO L471 AbstractCegarLoop]: Abstraction has 4281 states and 5141 transitions. [2024-11-18 10:46:30,173 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 66.25) internal successors, (265), 3 states have internal predecessors, (265), 0 states have call successors, (0), 0 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 10:46:30,173 INFO L276 IsEmpty]: Start isEmpty. Operand 4281 states and 5141 transitions. [2024-11-18 10:46:30,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 353 [2024-11-18 10:46:30,178 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:46:30,178 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:46:30,178 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-18 10:46:30,178 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:46:30,179 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:46:30,179 INFO L85 PathProgramCache]: Analyzing trace with hash -552863241, now seen corresponding path program 1 times [2024-11-18 10:46:30,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:46:30,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067983402] [2024-11-18 10:46:30,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:46:30,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:46:30,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:46:30,935 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 121 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 10:46:30,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:46:30,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1067983402] [2024-11-18 10:46:30,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1067983402] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:46:30,935 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:46:30,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 10:46:30,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723772770] [2024-11-18 10:46:30,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:46:30,937 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-18 10:46:30,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:46:30,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-18 10:46:30,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-18 10:46:30,939 INFO L87 Difference]: Start difference. First operand 4281 states and 5141 transitions. Second operand has 7 states, 7 states have (on average 50.285714285714285) internal successors, (352), 6 states have internal predecessors, (352), 0 states have call successors, (0), 0 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 10:46:32,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:46:32,772 INFO L93 Difference]: Finished difference Result 8090 states and 9792 transitions. [2024-11-18 10:46:32,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-18 10:46:32,772 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 50.285714285714285) internal successors, (352), 6 states have internal predecessors, (352), 0 states have call successors, (0), 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 352 [2024-11-18 10:46:32,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:46:32,788 INFO L225 Difference]: With dead ends: 8090 [2024-11-18 10:46:32,788 INFO L226 Difference]: Without dead ends: 3952 [2024-11-18 10:46:32,794 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-18 10:46:32,797 INFO L432 NwaCegarLoop]: 263 mSDtfsCounter, 288 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 2450 mSolverCounterSat, 185 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 288 SdHoareTripleChecker+Valid, 302 SdHoareTripleChecker+Invalid, 2635 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 185 IncrementalHoareTripleChecker+Valid, 2450 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-18 10:46:32,799 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [288 Valid, 302 Invalid, 2635 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [185 Valid, 2450 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-18 10:46:32,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3952 states. [2024-11-18 10:46:32,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3952 to 3952. [2024-11-18 10:46:32,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3952 states, 3951 states have (on average 1.0802328524424196) internal successors, (4268), 3951 states have internal predecessors, (4268), 0 states have call successors, (0), 0 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 10:46:32,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3952 states to 3952 states and 4268 transitions. [2024-11-18 10:46:32,863 INFO L78 Accepts]: Start accepts. Automaton has 3952 states and 4268 transitions. Word has length 352 [2024-11-18 10:46:32,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:46:32,863 INFO L471 AbstractCegarLoop]: Abstraction has 3952 states and 4268 transitions. [2024-11-18 10:46:32,864 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 50.285714285714285) internal successors, (352), 6 states have internal predecessors, (352), 0 states have call successors, (0), 0 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 10:46:32,865 INFO L276 IsEmpty]: Start isEmpty. Operand 3952 states and 4268 transitions. [2024-11-18 10:46:32,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 360 [2024-11-18 10:46:32,869 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:46:32,870 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:46:32,870 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-18 10:46:32,870 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:46:32,870 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:46:32,871 INFO L85 PathProgramCache]: Analyzing trace with hash 1931305887, now seen corresponding path program 1 times [2024-11-18 10:46:32,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:46:32,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45291952] [2024-11-18 10:46:32,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:46:32,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:46:32,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:46:33,463 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2024-11-18 10:46:33,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:46:33,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45291952] [2024-11-18 10:46:33,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [45291952] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 10:46:33,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [345512876] [2024-11-18 10:46:33,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:46:33,465 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 10:46:33,465 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 10:46:33,467 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 10:46:33,469 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 10:46:33,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:46:33,626 INFO L255 TraceCheckSpWp]: Trace formula consists of 455 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-18 10:46:33,642 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 10:46:33,713 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2024-11-18 10:46:33,715 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 10:46:33,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [345512876] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:46:33,716 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 10:46:33,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-11-18 10:46:33,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794518644] [2024-11-18 10:46:33,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:46:33,717 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 10:46:33,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:46:33,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 10:46:33,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-18 10:46:33,718 INFO L87 Difference]: Start difference. First operand 3952 states and 4268 transitions. Second operand has 3 states, 3 states have (on average 88.33333333333333) internal successors, (265), 3 states have internal predecessors, (265), 0 states have call successors, (0), 0 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 10:46:34,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:46:34,674 INFO L93 Difference]: Finished difference Result 9547 states and 10414 transitions. [2024-11-18 10:46:34,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 10:46:34,675 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 88.33333333333333) internal successors, (265), 3 states have internal predecessors, (265), 0 states have call successors, (0), 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 359 [2024-11-18 10:46:34,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:46:34,693 INFO L225 Difference]: With dead ends: 9547 [2024-11-18 10:46:34,694 INFO L226 Difference]: Without dead ends: 5926 [2024-11-18 10:46:34,700 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 361 GetRequests, 358 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-18 10:46:34,701 INFO L432 NwaCegarLoop]: 35 mSDtfsCounter, 329 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 769 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 329 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 889 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 769 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-18 10:46:34,701 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [329 Valid, 40 Invalid, 889 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 769 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-18 10:46:34,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5926 states. [2024-11-18 10:46:34,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5926 to 5926. [2024-11-18 10:46:34,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5926 states, 5925 states have (on average 1.0828691983122363) internal successors, (6416), 5925 states have internal predecessors, (6416), 0 states have call successors, (0), 0 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 10:46:34,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5926 states to 5926 states and 6416 transitions. [2024-11-18 10:46:34,826 INFO L78 Accepts]: Start accepts. Automaton has 5926 states and 6416 transitions. Word has length 359 [2024-11-18 10:46:34,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:46:34,827 INFO L471 AbstractCegarLoop]: Abstraction has 5926 states and 6416 transitions. [2024-11-18 10:46:34,827 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 88.33333333333333) internal successors, (265), 3 states have internal predecessors, (265), 0 states have call successors, (0), 0 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 10:46:34,827 INFO L276 IsEmpty]: Start isEmpty. Operand 5926 states and 6416 transitions. [2024-11-18 10:46:34,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 477 [2024-11-18 10:46:34,835 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:46:34,835 INFO L215 NwaCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-18 10:46:34,855 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 10:46:35,037 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 10:46:35,038 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:46:35,038 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:46:35,038 INFO L85 PathProgramCache]: Analyzing trace with hash 868031333, now seen corresponding path program 1 times [2024-11-18 10:46:35,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:46:35,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [520328671] [2024-11-18 10:46:35,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:46:35,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:46:35,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:46:35,675 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 217 trivial. 0 not checked. [2024-11-18 10:46:35,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:46:35,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [520328671] [2024-11-18 10:46:35,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [520328671] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 10:46:35,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2039130115] [2024-11-18 10:46:35,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:46:35,676 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 10:46:35,677 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 10:46:35,678 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 10:46:35,680 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 10:46:35,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:46:35,854 INFO L255 TraceCheckSpWp]: Trace formula consists of 572 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-18 10:46:35,860 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 10:46:35,912 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-11-18 10:46:35,913 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 10:46:35,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2039130115] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:46:35,913 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 10:46:35,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-11-18 10:46:35,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311196743] [2024-11-18 10:46:35,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:46:35,914 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 10:46:35,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:46:35,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 10:46:35,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-18 10:46:35,915 INFO L87 Difference]: Start difference. First operand 5926 states and 6416 transitions. Second operand has 3 states, 3 states have (on average 85.66666666666667) internal successors, (257), 3 states have internal predecessors, (257), 0 states have call successors, (0), 0 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 10:46:36,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:46:36,868 INFO L93 Difference]: Finished difference Result 13495 states and 14710 transitions. [2024-11-18 10:46:36,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 10:46:36,869 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 85.66666666666667) internal successors, (257), 3 states have internal predecessors, (257), 0 states have call successors, (0), 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 476 [2024-11-18 10:46:36,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:46:36,893 INFO L225 Difference]: With dead ends: 13495 [2024-11-18 10:46:36,893 INFO L226 Difference]: Without dead ends: 7900 [2024-11-18 10:46:36,901 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 478 GetRequests, 475 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-18 10:46:36,902 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 330 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 763 mSolverCounterSat, 146 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 330 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 909 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 146 IncrementalHoareTripleChecker+Valid, 763 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-18 10:46:36,903 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [330 Valid, 33 Invalid, 909 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [146 Valid, 763 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-18 10:46:36,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7900 states. [2024-11-18 10:46:36,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7900 to 7571. [2024-11-18 10:46:37,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7571 states, 7570 states have (on average 1.090885072655218) internal successors, (8258), 7570 states have internal predecessors, (8258), 0 states have call successors, (0), 0 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 10:46:37,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7571 states to 7571 states and 8258 transitions. [2024-11-18 10:46:37,032 INFO L78 Accepts]: Start accepts. Automaton has 7571 states and 8258 transitions. Word has length 476 [2024-11-18 10:46:37,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:46:37,033 INFO L471 AbstractCegarLoop]: Abstraction has 7571 states and 8258 transitions. [2024-11-18 10:46:37,034 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 85.66666666666667) internal successors, (257), 3 states have internal predecessors, (257), 0 states have call successors, (0), 0 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 10:46:37,034 INFO L276 IsEmpty]: Start isEmpty. Operand 7571 states and 8258 transitions. [2024-11-18 10:46:37,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 544 [2024-11-18 10:46:37,047 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:46:37,068 INFO L215 NwaCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-18 10:46:37,088 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 10:46:37,269 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-11-18 10:46:37,269 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:46:37,270 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:46:37,270 INFO L85 PathProgramCache]: Analyzing trace with hash -916546939, now seen corresponding path program 1 times [2024-11-18 10:46:37,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:46:37,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909439054] [2024-11-18 10:46:37,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:46:37,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:46:37,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:46:37,900 INFO L134 CoverageAnalysis]: Checked inductivity of 269 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2024-11-18 10:46:37,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:46:37,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909439054] [2024-11-18 10:46:37,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [909439054] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 10:46:37,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1940797483] [2024-11-18 10:46:37,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:46:37,902 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 10:46:37,902 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 10:46:37,904 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 10:46:37,905 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-18 10:46:38,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:46:38,078 INFO L255 TraceCheckSpWp]: Trace formula consists of 644 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-18 10:46:38,085 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 10:46:38,718 INFO L134 CoverageAnalysis]: Checked inductivity of 269 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 269 trivial. 0 not checked. [2024-11-18 10:46:38,718 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 10:46:38,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1940797483] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:46:38,718 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 10:46:38,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2024-11-18 10:46:38,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531506855] [2024-11-18 10:46:38,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:46:38,719 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 10:46:38,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:46:38,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 10:46:38,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-18 10:46:38,721 INFO L87 Difference]: Start difference. First operand 7571 states and 8258 transitions. Second operand has 3 states, 3 states have (on average 97.66666666666667) internal successors, (293), 2 states have internal predecessors, (293), 0 states have call successors, (0), 0 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 10:46:39,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:46:39,484 INFO L93 Difference]: Finished difference Result 9547 states and 10297 transitions. [2024-11-18 10:46:39,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 10:46:39,484 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 97.66666666666667) internal successors, (293), 2 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 543 [2024-11-18 10:46:39,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:46:39,500 INFO L225 Difference]: With dead ends: 9547 [2024-11-18 10:46:39,500 INFO L226 Difference]: Without dead ends: 9545 [2024-11-18 10:46:39,503 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 545 GetRequests, 542 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-18 10:46:39,504 INFO L432 NwaCegarLoop]: 78 mSDtfsCounter, 63 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 748 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 780 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 748 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-18 10:46:39,504 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 83 Invalid, 780 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 748 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-18 10:46:39,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9545 states. [2024-11-18 10:46:39,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9545 to 7571. [2024-11-18 10:46:39,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7571 states, 7570 states have (on average 1.0907529722589169) internal successors, (8257), 7570 states have internal predecessors, (8257), 0 states have call successors, (0), 0 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 10:46:39,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7571 states to 7571 states and 8257 transitions. [2024-11-18 10:46:39,626 INFO L78 Accepts]: Start accepts. Automaton has 7571 states and 8257 transitions. Word has length 543 [2024-11-18 10:46:39,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:46:39,627 INFO L471 AbstractCegarLoop]: Abstraction has 7571 states and 8257 transitions. [2024-11-18 10:46:39,628 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 97.66666666666667) internal successors, (293), 2 states have internal predecessors, (293), 0 states have call successors, (0), 0 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 10:46:39,628 INFO L276 IsEmpty]: Start isEmpty. Operand 7571 states and 8257 transitions. [2024-11-18 10:46:39,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 890 [2024-11-18 10:46:39,641 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:46:39,641 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 10:46:39,658 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-18 10:46:39,841 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 10:46:39,842 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:46:39,843 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:46:39,843 INFO L85 PathProgramCache]: Analyzing trace with hash -572968532, now seen corresponding path program 1 times [2024-11-18 10:46:39,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:46:39,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52850386] [2024-11-18 10:46:39,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:46:39,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:46:39,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:46:40,966 INFO L134 CoverageAnalysis]: Checked inductivity of 1558 backedges. 809 proven. 0 refuted. 0 times theorem prover too weak. 749 trivial. 0 not checked. [2024-11-18 10:46:40,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:46:40,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52850386] [2024-11-18 10:46:40,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [52850386] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:46:40,967 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:46:40,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-18 10:46:40,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786296495] [2024-11-18 10:46:40,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:46:40,968 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 10:46:40,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:46:40,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 10:46:40,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:46:40,970 INFO L87 Difference]: Start difference. First operand 7571 states and 8257 transitions. Second operand has 3 states, 3 states have (on average 132.66666666666666) internal successors, (398), 2 states have internal predecessors, (398), 0 states have call successors, (0), 0 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 10:46:41,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:46:41,668 INFO L93 Difference]: Finished difference Result 15140 states and 16518 transitions. [2024-11-18 10:46:41,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 10:46:41,669 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 132.66666666666666) internal successors, (398), 2 states have internal predecessors, (398), 0 states have call successors, (0), 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 889 [2024-11-18 10:46:41,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:46:41,680 INFO L225 Difference]: With dead ends: 15140 [2024-11-18 10:46:41,680 INFO L226 Difference]: Without dead ends: 7900 [2024-11-18 10:46:41,689 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 10:46:41,689 INFO L432 NwaCegarLoop]: 105 mSDtfsCounter, 85 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 762 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 762 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 762 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-18 10:46:41,690 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 110 Invalid, 762 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 762 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-18 10:46:41,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7900 states. [2024-11-18 10:46:41,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7900 to 7900. [2024-11-18 10:46:41,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7900 states, 7899 states have (on average 1.087859222686416) internal successors, (8593), 7899 states have internal predecessors, (8593), 0 states have call successors, (0), 0 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 10:46:41,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7900 states to 7900 states and 8593 transitions. [2024-11-18 10:46:41,778 INFO L78 Accepts]: Start accepts. Automaton has 7900 states and 8593 transitions. Word has length 889 [2024-11-18 10:46:41,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:46:41,779 INFO L471 AbstractCegarLoop]: Abstraction has 7900 states and 8593 transitions. [2024-11-18 10:46:41,779 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 132.66666666666666) internal successors, (398), 2 states have internal predecessors, (398), 0 states have call successors, (0), 0 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 10:46:41,779 INFO L276 IsEmpty]: Start isEmpty. Operand 7900 states and 8593 transitions. [2024-11-18 10:46:41,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 898 [2024-11-18 10:46:41,793 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:46:41,794 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 10:46:41,794 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-18 10:46:41,794 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:46:41,795 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:46:41,795 INFO L85 PathProgramCache]: Analyzing trace with hash -1999493480, now seen corresponding path program 1 times [2024-11-18 10:46:41,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:46:41,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530074898] [2024-11-18 10:46:41,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:46:41,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:46:41,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:46:42,439 INFO L134 CoverageAnalysis]: Checked inductivity of 1566 backedges. 888 proven. 0 refuted. 0 times theorem prover too weak. 678 trivial. 0 not checked. [2024-11-18 10:46:42,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:46:42,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530074898] [2024-11-18 10:46:42,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [530074898] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:46:42,440 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:46:42,440 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 10:46:42,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505060942] [2024-11-18 10:46:42,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:46:42,441 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 10:46:42,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:46:42,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 10:46:42,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:46:42,443 INFO L87 Difference]: Start difference. First operand 7900 states and 8593 transitions. Second operand has 3 states, 3 states have (on average 154.66666666666666) internal successors, (464), 3 states have internal predecessors, (464), 0 states have call successors, (0), 0 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 10:46:43,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:46:43,218 INFO L93 Difference]: Finished difference Result 19417 states and 21299 transitions. [2024-11-18 10:46:43,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 10:46:43,220 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 154.66666666666666) internal successors, (464), 3 states have internal predecessors, (464), 0 states have call successors, (0), 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 897 [2024-11-18 10:46:43,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:46:43,238 INFO L225 Difference]: With dead ends: 19417 [2024-11-18 10:46:43,238 INFO L226 Difference]: Without dead ends: 10532 [2024-11-18 10:46:43,249 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 10:46:43,250 INFO L432 NwaCegarLoop]: 424 mSDtfsCounter, 270 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 747 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 270 SdHoareTripleChecker+Valid, 430 SdHoareTripleChecker+Invalid, 840 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 747 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-18 10:46:43,250 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [270 Valid, 430 Invalid, 840 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 747 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-18 10:46:43,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10532 states. [2024-11-18 10:46:43,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10532 to 10203. [2024-11-18 10:46:43,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10203 states, 10202 states have (on average 1.072926877082925) internal successors, (10946), 10202 states have internal predecessors, (10946), 0 states have call successors, (0), 0 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 10:46:43,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10203 states to 10203 states and 10946 transitions. [2024-11-18 10:46:43,367 INFO L78 Accepts]: Start accepts. Automaton has 10203 states and 10946 transitions. Word has length 897 [2024-11-18 10:46:43,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:46:43,368 INFO L471 AbstractCegarLoop]: Abstraction has 10203 states and 10946 transitions. [2024-11-18 10:46:43,368 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 154.66666666666666) internal successors, (464), 3 states have internal predecessors, (464), 0 states have call successors, (0), 0 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 10:46:43,368 INFO L276 IsEmpty]: Start isEmpty. Operand 10203 states and 10946 transitions. [2024-11-18 10:46:43,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1193 [2024-11-18 10:46:43,389 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:46:43,389 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 10:46:43,390 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-18 10:46:43,390 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:46:43,390 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:46:43,390 INFO L85 PathProgramCache]: Analyzing trace with hash 742569005, now seen corresponding path program 1 times [2024-11-18 10:46:43,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:46:43,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978105826] [2024-11-18 10:46:43,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:46:43,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:46:43,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:46:45,083 INFO L134 CoverageAnalysis]: Checked inductivity of 2538 backedges. 1775 proven. 0 refuted. 0 times theorem prover too weak. 763 trivial. 0 not checked. [2024-11-18 10:46:45,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:46:45,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1978105826] [2024-11-18 10:46:45,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1978105826] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:46:45,084 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:46:45,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 10:46:45,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239226987] [2024-11-18 10:46:45,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:46:45,085 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 10:46:45,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:46:45,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 10:46:45,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-18 10:46:45,087 INFO L87 Difference]: Start difference. First operand 10203 states and 10946 transitions. Second operand has 6 states, 6 states have (on average 115.5) internal successors, (693), 6 states have internal predecessors, (693), 0 states have call successors, (0), 0 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 10:46:46,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:46:46,374 INFO L93 Difference]: Finished difference Result 20405 states and 21909 transitions. [2024-11-18 10:46:46,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 10:46:46,375 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 115.5) internal successors, (693), 6 states have internal predecessors, (693), 0 states have call successors, (0), 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 1192 [2024-11-18 10:46:46,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:46:46,388 INFO L225 Difference]: With dead ends: 20405 [2024-11-18 10:46:46,388 INFO L226 Difference]: Without dead ends: 10862 [2024-11-18 10:46:46,399 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-11-18 10:46:46,399 INFO L432 NwaCegarLoop]: 430 mSDtfsCounter, 417 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 2336 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 417 SdHoareTripleChecker+Valid, 572 SdHoareTripleChecker+Invalid, 2350 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 2336 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-18 10:46:46,400 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [417 Valid, 572 Invalid, 2350 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 2336 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-18 10:46:46,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10862 states. [2024-11-18 10:46:46,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10862 to 10861. [2024-11-18 10:46:46,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10861 states, 10860 states have (on average 1.0689686924493553) internal successors, (11609), 10860 states have internal predecessors, (11609), 0 states have call successors, (0), 0 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 10:46:46,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10861 states to 10861 states and 11609 transitions. [2024-11-18 10:46:46,510 INFO L78 Accepts]: Start accepts. Automaton has 10861 states and 11609 transitions. Word has length 1192 [2024-11-18 10:46:46,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:46:46,511 INFO L471 AbstractCegarLoop]: Abstraction has 10861 states and 11609 transitions. [2024-11-18 10:46:46,511 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 115.5) internal successors, (693), 6 states have internal predecessors, (693), 0 states have call successors, (0), 0 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 10:46:46,511 INFO L276 IsEmpty]: Start isEmpty. Operand 10861 states and 11609 transitions. [2024-11-18 10:46:46,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1207 [2024-11-18 10:46:46,533 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:46:46,534 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 10:46:46,534 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-18 10:46:46,534 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:46:46,535 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:46:46,535 INFO L85 PathProgramCache]: Analyzing trace with hash 2107555254, now seen corresponding path program 1 times [2024-11-18 10:46:46,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:46:46,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246790597] [2024-11-18 10:46:46,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:46:46,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:46:46,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:46:47,887 INFO L134 CoverageAnalysis]: Checked inductivity of 2425 backedges. 1699 proven. 0 refuted. 0 times theorem prover too weak. 726 trivial. 0 not checked. [2024-11-18 10:46:47,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:46:47,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246790597] [2024-11-18 10:46:47,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1246790597] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:46:47,888 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:46:47,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 10:46:47,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483553499] [2024-11-18 10:46:47,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:46:47,889 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 10:46:47,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:46:47,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 10:46:47,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 10:46:47,891 INFO L87 Difference]: Start difference. First operand 10861 states and 11609 transitions. Second operand has 4 states, 4 states have (on average 173.0) internal successors, (692), 4 states have internal predecessors, (692), 0 states have call successors, (0), 0 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 10:46:48,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:46:48,937 INFO L93 Difference]: Finished difference Result 21071 states and 22558 transitions. [2024-11-18 10:46:48,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 10:46:48,937 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 173.0) internal successors, (692), 4 states have internal predecessors, (692), 0 states have call successors, (0), 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 1206 [2024-11-18 10:46:48,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:46:48,952 INFO L225 Difference]: With dead ends: 21071 [2024-11-18 10:46:48,953 INFO L226 Difference]: Without dead ends: 10870 [2024-11-18 10:46:48,964 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-18 10:46:48,965 INFO L432 NwaCegarLoop]: 430 mSDtfsCounter, 217 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 1331 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 217 SdHoareTripleChecker+Valid, 444 SdHoareTripleChecker+Invalid, 1354 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 1331 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-18 10:46:48,966 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [217 Valid, 444 Invalid, 1354 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 1331 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-18 10:46:48,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10870 states. [2024-11-18 10:46:49,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10870 to 10532. [2024-11-18 10:46:49,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10532 states, 10531 states have (on average 1.0702687304149654) internal successors, (11271), 10531 states have internal predecessors, (11271), 0 states have call successors, (0), 0 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 10:46:49,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10532 states to 10532 states and 11271 transitions. [2024-11-18 10:46:49,070 INFO L78 Accepts]: Start accepts. Automaton has 10532 states and 11271 transitions. Word has length 1206 [2024-11-18 10:46:49,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:46:49,071 INFO L471 AbstractCegarLoop]: Abstraction has 10532 states and 11271 transitions. [2024-11-18 10:46:49,072 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 173.0) internal successors, (692), 4 states have internal predecessors, (692), 0 states have call successors, (0), 0 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 10:46:49,072 INFO L276 IsEmpty]: Start isEmpty. Operand 10532 states and 11271 transitions. [2024-11-18 10:46:49,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1209 [2024-11-18 10:46:49,092 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:46:49,092 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 10:46:49,093 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-18 10:46:49,093 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:46:49,093 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:46:49,094 INFO L85 PathProgramCache]: Analyzing trace with hash -278567954, now seen corresponding path program 1 times [2024-11-18 10:46:49,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:46:49,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044299837] [2024-11-18 10:46:49,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:46:49,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:46:49,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:46:49,725 INFO L134 CoverageAnalysis]: Checked inductivity of 2733 backedges. 920 proven. 0 refuted. 0 times theorem prover too weak. 1813 trivial. 0 not checked. [2024-11-18 10:46:49,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:46:49,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044299837] [2024-11-18 10:46:49,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1044299837] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:46:49,726 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:46:49,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 10:46:49,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562028086] [2024-11-18 10:46:49,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:46:49,727 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 10:46:49,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:46:49,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 10:46:49,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:46:49,729 INFO L87 Difference]: Start difference. First operand 10532 states and 11271 transitions. Second operand has 3 states, 3 states have (on average 147.66666666666666) internal successors, (443), 3 states have internal predecessors, (443), 0 states have call successors, (0), 0 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 10:46:50,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:46:50,409 INFO L93 Difference]: Finished difference Result 23365 states and 25035 transitions. [2024-11-18 10:46:50,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 10:46:50,410 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 147.66666666666666) internal successors, (443), 3 states have internal predecessors, (443), 0 states have call successors, (0), 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 1208 [2024-11-18 10:46:50,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:46:50,424 INFO L225 Difference]: With dead ends: 23365 [2024-11-18 10:46:50,425 INFO L226 Difference]: Without dead ends: 11848 [2024-11-18 10:46:50,435 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 10:46:50,436 INFO L432 NwaCegarLoop]: 405 mSDtfsCounter, 172 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 756 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 172 SdHoareTripleChecker+Valid, 410 SdHoareTripleChecker+Invalid, 820 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 756 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-18 10:46:50,436 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [172 Valid, 410 Invalid, 820 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 756 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-18 10:46:50,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11848 states. [2024-11-18 10:46:50,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11848 to 11848. [2024-11-18 10:46:50,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11848 states, 11847 states have (on average 1.04980163754537) internal successors, (12437), 11847 states have internal predecessors, (12437), 0 states have call successors, (0), 0 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 10:46:50,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11848 states to 11848 states and 12437 transitions. [2024-11-18 10:46:50,554 INFO L78 Accepts]: Start accepts. Automaton has 11848 states and 12437 transitions. Word has length 1208 [2024-11-18 10:46:50,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:46:50,555 INFO L471 AbstractCegarLoop]: Abstraction has 11848 states and 12437 transitions. [2024-11-18 10:46:50,556 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 147.66666666666666) internal successors, (443), 3 states have internal predecessors, (443), 0 states have call successors, (0), 0 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 10:46:50,556 INFO L276 IsEmpty]: Start isEmpty. Operand 11848 states and 12437 transitions. [2024-11-18 10:46:50,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1341 [2024-11-18 10:46:50,577 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:46:50,577 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 10:46:50,578 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-18 10:46:50,578 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:46:50,578 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:46:50,578 INFO L85 PathProgramCache]: Analyzing trace with hash -1784658100, now seen corresponding path program 1 times [2024-11-18 10:46:50,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:46:50,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384933771] [2024-11-18 10:46:50,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:46:50,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:46:50,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:46:51,398 INFO L134 CoverageAnalysis]: Checked inductivity of 3662 backedges. 2452 proven. 0 refuted. 0 times theorem prover too weak. 1210 trivial. 0 not checked. [2024-11-18 10:46:51,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:46:51,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384933771] [2024-11-18 10:46:51,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [384933771] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:46:51,398 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:46:51,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 10:46:51,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639435387] [2024-11-18 10:46:51,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:46:51,399 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 10:46:51,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:46:51,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 10:46:51,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:46:51,400 INFO L87 Difference]: Start difference. First operand 11848 states and 12437 transitions. Second operand has 3 states, 3 states have (on average 201.66666666666666) internal successors, (605), 3 states have internal predecessors, (605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:46:52,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:46:52,132 INFO L93 Difference]: Finished difference Result 24023 states and 25231 transitions. [2024-11-18 10:46:52,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 10:46:52,133 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 201.66666666666666) internal successors, (605), 3 states have internal predecessors, (605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1340 [2024-11-18 10:46:52,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:46:52,145 INFO L225 Difference]: With dead ends: 24023 [2024-11-18 10:46:52,145 INFO L226 Difference]: Without dead ends: 12835 [2024-11-18 10:46:52,153 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 10:46:52,153 INFO L432 NwaCegarLoop]: 413 mSDtfsCounter, 195 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 751 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 195 SdHoareTripleChecker+Valid, 418 SdHoareTripleChecker+Invalid, 818 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 751 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-18 10:46:52,154 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [195 Valid, 418 Invalid, 818 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 751 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-18 10:46:52,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12835 states. [2024-11-18 10:46:52,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12835 to 12506. [2024-11-18 10:46:52,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12506 states, 12505 states have (on average 1.0407836865253899) internal successors, (13015), 12505 states have internal predecessors, (13015), 0 states have call successors, (0), 0 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 10:46:52,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12506 states to 12506 states and 13015 transitions. [2024-11-18 10:46:52,314 INFO L78 Accepts]: Start accepts. Automaton has 12506 states and 13015 transitions. Word has length 1340 [2024-11-18 10:46:52,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:46:52,315 INFO L471 AbstractCegarLoop]: Abstraction has 12506 states and 13015 transitions. [2024-11-18 10:46:52,315 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 201.66666666666666) internal successors, (605), 3 states have internal predecessors, (605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:46:52,315 INFO L276 IsEmpty]: Start isEmpty. Operand 12506 states and 13015 transitions. [2024-11-18 10:46:52,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1366 [2024-11-18 10:46:52,338 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:46:52,339 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 10:46:52,339 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-18 10:46:52,339 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:46:52,340 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:46:52,340 INFO L85 PathProgramCache]: Analyzing trace with hash 1486103772, now seen corresponding path program 1 times [2024-11-18 10:46:52,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:46:52,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103588288] [2024-11-18 10:46:52,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:46:52,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:46:52,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:46:53,560 INFO L134 CoverageAnalysis]: Checked inductivity of 3837 backedges. 2333 proven. 0 refuted. 0 times theorem prover too weak. 1504 trivial. 0 not checked. [2024-11-18 10:46:53,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:46:53,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [103588288] [2024-11-18 10:46:53,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [103588288] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:46:53,561 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:46:53,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 10:46:53,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454523250] [2024-11-18 10:46:53,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:46:53,562 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 10:46:53,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:46:53,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 10:46:53,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:46:53,564 INFO L87 Difference]: Start difference. First operand 12506 states and 13015 transitions. Second operand has 3 states, 3 states have (on average 190.33333333333334) internal successors, (571), 3 states have internal predecessors, (571), 0 states have call successors, (0), 0 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 10:46:54,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:46:54,307 INFO L93 Difference]: Finished difference Result 25010 states and 26054 transitions. [2024-11-18 10:46:54,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 10:46:54,307 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 190.33333333333334) internal successors, (571), 3 states have internal predecessors, (571), 0 states have call successors, (0), 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 1365 [2024-11-18 10:46:54,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:46:54,321 INFO L225 Difference]: With dead ends: 25010 [2024-11-18 10:46:54,321 INFO L226 Difference]: Without dead ends: 13164 [2024-11-18 10:46:54,329 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 10:46:54,330 INFO L432 NwaCegarLoop]: 426 mSDtfsCounter, 224 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 749 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 224 SdHoareTripleChecker+Valid, 432 SdHoareTripleChecker+Invalid, 782 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 749 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-18 10:46:54,330 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [224 Valid, 432 Invalid, 782 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 749 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-18 10:46:54,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13164 states. [2024-11-18 10:46:54,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13164 to 13164. [2024-11-18 10:46:54,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13164 states, 13163 states have (on average 1.038213173288764) internal successors, (13666), 13163 states have internal predecessors, (13666), 0 states have call successors, (0), 0 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 10:46:54,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13164 states to 13164 states and 13666 transitions. [2024-11-18 10:46:54,463 INFO L78 Accepts]: Start accepts. Automaton has 13164 states and 13666 transitions. Word has length 1365 [2024-11-18 10:46:54,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:46:54,464 INFO L471 AbstractCegarLoop]: Abstraction has 13164 states and 13666 transitions. [2024-11-18 10:46:54,464 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 190.33333333333334) internal successors, (571), 3 states have internal predecessors, (571), 0 states have call successors, (0), 0 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 10:46:54,465 INFO L276 IsEmpty]: Start isEmpty. Operand 13164 states and 13666 transitions. [2024-11-18 10:46:54,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1391 [2024-11-18 10:46:54,484 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:46:54,485 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 10:46:54,485 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-18 10:46:54,485 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:46:54,486 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:46:54,486 INFO L85 PathProgramCache]: Analyzing trace with hash 1422206462, now seen corresponding path program 1 times [2024-11-18 10:46:54,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:46:54,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689548520] [2024-11-18 10:46:54,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:46:54,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:46:54,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:46:55,766 INFO L134 CoverageAnalysis]: Checked inductivity of 3413 backedges. 2413 proven. 0 refuted. 0 times theorem prover too weak. 1000 trivial. 0 not checked. [2024-11-18 10:46:55,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:46:55,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1689548520] [2024-11-18 10:46:55,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1689548520] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:46:55,769 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:46:55,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 10:46:55,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998706060] [2024-11-18 10:46:55,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:46:55,771 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 10:46:55,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:46:55,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 10:46:55,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 10:46:55,772 INFO L87 Difference]: Start difference. First operand 13164 states and 13666 transitions. Second operand has 4 states, 4 states have (on average 183.25) internal successors, (733), 4 states have internal predecessors, (733), 0 states have call successors, (0), 0 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 10:46:56,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:46:56,622 INFO L93 Difference]: Finished difference Result 25668 states and 26663 transitions. [2024-11-18 10:46:56,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 10:46:56,623 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 183.25) internal successors, (733), 4 states have internal predecessors, (733), 0 states have call successors, (0), 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 1390 [2024-11-18 10:46:56,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:46:56,636 INFO L225 Difference]: With dead ends: 25668 [2024-11-18 10:46:56,637 INFO L226 Difference]: Without dead ends: 13164 [2024-11-18 10:46:56,645 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-18 10:46:56,645 INFO L432 NwaCegarLoop]: 426 mSDtfsCounter, 120 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 1312 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 555 SdHoareTripleChecker+Invalid, 1323 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 1312 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-18 10:46:56,645 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 555 Invalid, 1323 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 1312 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-18 10:46:56,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13164 states. [2024-11-18 10:46:56,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13164 to 13164. [2024-11-18 10:46:56,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13164 states, 13163 states have (on average 1.037301527007521) internal successors, (13654), 13163 states have internal predecessors, (13654), 0 states have call successors, (0), 0 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 10:46:56,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13164 states to 13164 states and 13654 transitions. [2024-11-18 10:46:56,751 INFO L78 Accepts]: Start accepts. Automaton has 13164 states and 13654 transitions. Word has length 1390 [2024-11-18 10:46:56,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:46:56,752 INFO L471 AbstractCegarLoop]: Abstraction has 13164 states and 13654 transitions. [2024-11-18 10:46:56,752 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 183.25) internal successors, (733), 4 states have internal predecessors, (733), 0 states have call successors, (0), 0 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 10:46:56,752 INFO L276 IsEmpty]: Start isEmpty. Operand 13164 states and 13654 transitions. [2024-11-18 10:46:56,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1420 [2024-11-18 10:46:56,767 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:46:56,768 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 10:46:56,768 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-18 10:46:56,768 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:46:56,768 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:46:56,769 INFO L85 PathProgramCache]: Analyzing trace with hash 1141777559, now seen corresponding path program 1 times [2024-11-18 10:46:56,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:46:56,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387455739] [2024-11-18 10:46:56,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:46:56,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:46:56,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:46:57,587 INFO L134 CoverageAnalysis]: Checked inductivity of 3837 backedges. 1109 proven. 0 refuted. 0 times theorem prover too weak. 2728 trivial. 0 not checked. [2024-11-18 10:46:57,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:46:57,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387455739] [2024-11-18 10:46:57,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [387455739] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:46:57,587 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:46:57,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 10:46:57,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596119318] [2024-11-18 10:46:57,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:46:57,588 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 10:46:57,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:46:57,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 10:46:57,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:46:57,589 INFO L87 Difference]: Start difference. First operand 13164 states and 13654 transitions. Second operand has 3 states, 3 states have (on average 148.0) internal successors, (444), 3 states have internal predecessors, (444), 0 states have call successors, (0), 0 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 10:46:58,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:46:58,265 INFO L93 Difference]: Finished difference Result 27313 states and 28355 transitions. [2024-11-18 10:46:58,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 10:46:58,265 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 148.0) internal successors, (444), 3 states have internal predecessors, (444), 0 states have call successors, (0), 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 1419 [2024-11-18 10:46:58,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:46:58,278 INFO L225 Difference]: With dead ends: 27313 [2024-11-18 10:46:58,278 INFO L226 Difference]: Without dead ends: 14480 [2024-11-18 10:46:58,287 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 10:46:58,288 INFO L432 NwaCegarLoop]: 404 mSDtfsCounter, 163 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 754 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 410 SdHoareTripleChecker+Invalid, 808 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 754 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-18 10:46:58,288 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [163 Valid, 410 Invalid, 808 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 754 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-18 10:46:58,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14480 states. [2024-11-18 10:46:58,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14480 to 13822. [2024-11-18 10:46:58,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13822 states, 13821 states have (on average 1.0316185514796326) internal successors, (14258), 13821 states have internal predecessors, (14258), 0 states have call successors, (0), 0 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 10:46:58,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13822 states to 13822 states and 14258 transitions. [2024-11-18 10:46:58,392 INFO L78 Accepts]: Start accepts. Automaton has 13822 states and 14258 transitions. Word has length 1419 [2024-11-18 10:46:58,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:46:58,393 INFO L471 AbstractCegarLoop]: Abstraction has 13822 states and 14258 transitions. [2024-11-18 10:46:58,393 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 148.0) internal successors, (444), 3 states have internal predecessors, (444), 0 states have call successors, (0), 0 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 10:46:58,393 INFO L276 IsEmpty]: Start isEmpty. Operand 13822 states and 14258 transitions. [2024-11-18 10:46:58,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1658 [2024-11-18 10:46:58,410 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:46:58,411 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 10:46:58,411 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-18 10:46:58,411 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:46:58,412 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:46:58,412 INFO L85 PathProgramCache]: Analyzing trace with hash -266828456, now seen corresponding path program 1 times [2024-11-18 10:46:58,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:46:58,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478927481] [2024-11-18 10:46:58,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:46:58,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:46:58,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:47:00,209 INFO L134 CoverageAnalysis]: Checked inductivity of 5203 backedges. 1902 proven. 1393 refuted. 0 times theorem prover too weak. 1908 trivial. 0 not checked. [2024-11-18 10:47:00,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:47:00,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478927481] [2024-11-18 10:47:00,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [478927481] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 10:47:00,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1601427448] [2024-11-18 10:47:00,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:47:00,210 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 10:47:00,210 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 10:47:00,212 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 10:47:00,212 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-18 10:47:00,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:47:00,611 INFO L255 TraceCheckSpWp]: Trace formula consists of 1908 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-18 10:47:00,639 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 10:47:01,730 INFO L134 CoverageAnalysis]: Checked inductivity of 5203 backedges. 2878 proven. 0 refuted. 0 times theorem prover too weak. 2325 trivial. 0 not checked. [2024-11-18 10:47:01,731 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 10:47:01,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1601427448] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:47:01,732 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 10:47:01,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-11-18 10:47:01,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876615463] [2024-11-18 10:47:01,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:47:01,735 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 10:47:01,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:47:01,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 10:47:01,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-18 10:47:01,737 INFO L87 Difference]: Start difference. First operand 13822 states and 14258 transitions. Second operand has 3 states, 3 states have (on average 168.0) internal successors, (504), 3 states have internal predecessors, (504), 0 states have call successors, (0), 0 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 10:47:02,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:47:02,429 INFO L93 Difference]: Finished difference Result 27313 states and 28183 transitions. [2024-11-18 10:47:02,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 10:47:02,430 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 168.0) internal successors, (504), 3 states have internal predecessors, (504), 0 states have call successors, (0), 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 1657 [2024-11-18 10:47:02,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:47:02,441 INFO L225 Difference]: With dead ends: 27313 [2024-11-18 10:47:02,441 INFO L226 Difference]: Without dead ends: 13822 [2024-11-18 10:47:02,448 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1661 GetRequests, 1657 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-18 10:47:02,449 INFO L432 NwaCegarLoop]: 371 mSDtfsCounter, 112 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 758 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 377 SdHoareTripleChecker+Invalid, 772 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 758 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-18 10:47:02,449 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 377 Invalid, 772 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 758 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-18 10:47:02,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13822 states. [2024-11-18 10:47:02,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13822 to 13822. [2024-11-18 10:47:02,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13822 states, 13821 states have (on average 1.0302438318500833) internal successors, (14239), 13821 states have internal predecessors, (14239), 0 states have call successors, (0), 0 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 10:47:02,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13822 states to 13822 states and 14239 transitions. [2024-11-18 10:47:02,547 INFO L78 Accepts]: Start accepts. Automaton has 13822 states and 14239 transitions. Word has length 1657 [2024-11-18 10:47:02,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:47:02,548 INFO L471 AbstractCegarLoop]: Abstraction has 13822 states and 14239 transitions. [2024-11-18 10:47:02,548 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 168.0) internal successors, (504), 3 states have internal predecessors, (504), 0 states have call successors, (0), 0 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 10:47:02,548 INFO L276 IsEmpty]: Start isEmpty. Operand 13822 states and 14239 transitions. [2024-11-18 10:47:02,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1748 [2024-11-18 10:47:02,571 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:47:02,572 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 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] [2024-11-18 10:47:02,586 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-18 10:47:02,774 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 10:47:02,774 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:47:02,775 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:47:02,775 INFO L85 PathProgramCache]: Analyzing trace with hash 1100834381, now seen corresponding path program 1 times [2024-11-18 10:47:02,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:47:02,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419298699] [2024-11-18 10:47:02,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:47:02,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:47:02,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:47:04,637 INFO L134 CoverageAnalysis]: Checked inductivity of 5253 backedges. 4080 proven. 90 refuted. 0 times theorem prover too weak. 1083 trivial. 0 not checked. [2024-11-18 10:47:04,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:47:04,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419298699] [2024-11-18 10:47:04,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1419298699] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 10:47:04,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1922345483] [2024-11-18 10:47:04,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:47:04,638 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 10:47:04,638 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 10:47:04,642 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 10:47:04,644 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-18 10:47:05,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:47:05,137 INFO L255 TraceCheckSpWp]: Trace formula consists of 2007 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-18 10:47:05,164 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 10:47:08,210 INFO L134 CoverageAnalysis]: Checked inductivity of 5253 backedges. 2334 proven. 201 refuted. 0 times theorem prover too weak. 2718 trivial. 0 not checked. [2024-11-18 10:47:08,210 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 10:47:12,179 INFO L134 CoverageAnalysis]: Checked inductivity of 5253 backedges. 2334 proven. 201 refuted. 0 times theorem prover too weak. 2718 trivial. 0 not checked. [2024-11-18 10:47:12,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1922345483] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 10:47:12,180 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 10:47:12,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 3, 3] total 11 [2024-11-18 10:47:12,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384475743] [2024-11-18 10:47:12,181 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 10:47:12,182 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-18 10:47:12,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:47:12,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-18 10:47:12,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-11-18 10:47:12,185 INFO L87 Difference]: Start difference. First operand 13822 states and 14239 transitions. Second operand has 11 states, 11 states have (on average 202.8181818181818) internal successors, (2231), 11 states have internal predecessors, (2231), 0 states have call successors, (0), 0 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 10:47:16,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:47:16,089 INFO L93 Difference]: Finished difference Result 28301 states and 29161 transitions. [2024-11-18 10:47:16,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-18 10:47:16,090 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 202.8181818181818) internal successors, (2231), 11 states have internal predecessors, (2231), 0 states have call successors, (0), 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 1747 [2024-11-18 10:47:16,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:47:16,101 INFO L225 Difference]: With dead ends: 28301 [2024-11-18 10:47:16,102 INFO L226 Difference]: Without dead ends: 14810 [2024-11-18 10:47:16,108 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3507 GetRequests, 3494 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2024-11-18 10:47:16,109 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 1008 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 8048 mSolverCounterSat, 140 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1008 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 8188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 140 IncrementalHoareTripleChecker+Valid, 8048 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2024-11-18 10:47:16,109 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1008 Valid, 101 Invalid, 8188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [140 Valid, 8048 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2024-11-18 10:47:16,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14810 states. [2024-11-18 10:47:16,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14810 to 14480. [2024-11-18 10:47:16,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14480 states, 14479 states have (on average 1.0247945300089785) internal successors, (14838), 14479 states have internal predecessors, (14838), 0 states have call successors, (0), 0 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 10:47:16,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14480 states to 14480 states and 14838 transitions. [2024-11-18 10:47:16,265 INFO L78 Accepts]: Start accepts. Automaton has 14480 states and 14838 transitions. Word has length 1747 [2024-11-18 10:47:16,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:47:16,266 INFO L471 AbstractCegarLoop]: Abstraction has 14480 states and 14838 transitions. [2024-11-18 10:47:16,266 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 202.8181818181818) internal successors, (2231), 11 states have internal predecessors, (2231), 0 states have call successors, (0), 0 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 10:47:16,266 INFO L276 IsEmpty]: Start isEmpty. Operand 14480 states and 14838 transitions. [2024-11-18 10:47:16,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1970 [2024-11-18 10:47:16,296 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:47:16,297 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 10:47:16,316 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-18 10:47:16,497 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 10:47:16,498 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:47:16,498 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:47:16,499 INFO L85 PathProgramCache]: Analyzing trace with hash -1044087620, now seen corresponding path program 1 times [2024-11-18 10:47:16,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:47:16,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329213986] [2024-11-18 10:47:16,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:47:16,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:47:16,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:47:19,127 INFO L134 CoverageAnalysis]: Checked inductivity of 7606 backedges. 2710 proven. 156 refuted. 0 times theorem prover too weak. 4740 trivial. 0 not checked. [2024-11-18 10:47:19,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:47:19,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329213986] [2024-11-18 10:47:19,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1329213986] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 10:47:19,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1082611458] [2024-11-18 10:47:19,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:47:19,128 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 10:47:19,128 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 10:47:19,129 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 10:47:19,131 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-18 10:47:19,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:47:19,767 INFO L255 TraceCheckSpWp]: Trace formula consists of 2265 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-18 10:47:19,795 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 10:47:20,474 INFO L134 CoverageAnalysis]: Checked inductivity of 7606 backedges. 2866 proven. 0 refuted. 0 times theorem prover too weak. 4740 trivial. 0 not checked. [2024-11-18 10:47:20,474 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 10:47:20,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1082611458] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:47:20,474 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 10:47:20,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2024-11-18 10:47:20,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494743348] [2024-11-18 10:47:20,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:47:20,476 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 10:47:20,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:47:20,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 10:47:20,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-18 10:47:20,477 INFO L87 Difference]: Start difference. First operand 14480 states and 14838 transitions. Second operand has 3 states, 3 states have (on average 228.66666666666666) internal successors, (686), 3 states have internal predecessors, (686), 0 states have call successors, (0), 0 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 10:47:21,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:47:21,171 INFO L93 Difference]: Finished difference Result 30603 states and 31359 transitions. [2024-11-18 10:47:21,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 10:47:21,172 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 228.66666666666666) internal successors, (686), 3 states have internal predecessors, (686), 0 states have call successors, (0), 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 1969 [2024-11-18 10:47:21,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:47:21,189 INFO L225 Difference]: With dead ends: 30603 [2024-11-18 10:47:21,189 INFO L226 Difference]: Without dead ends: 16454 [2024-11-18 10:47:21,199 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1973 GetRequests, 1968 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-18 10:47:21,199 INFO L432 NwaCegarLoop]: 85 mSDtfsCounter, 173 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 748 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 773 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 748 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-18 10:47:21,200 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [173 Valid, 90 Invalid, 773 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 748 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-18 10:47:21,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16454 states. [2024-11-18 10:47:21,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16454 to 14809. [2024-11-18 10:47:21,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14809 states, 14808 states have (on average 1.023568341437061) internal successors, (15157), 14808 states have internal predecessors, (15157), 0 states have call successors, (0), 0 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 10:47:21,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14809 states to 14809 states and 15157 transitions. [2024-11-18 10:47:21,317 INFO L78 Accepts]: Start accepts. Automaton has 14809 states and 15157 transitions. Word has length 1969 [2024-11-18 10:47:21,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:47:21,318 INFO L471 AbstractCegarLoop]: Abstraction has 14809 states and 15157 transitions. [2024-11-18 10:47:21,318 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 228.66666666666666) internal successors, (686), 3 states have internal predecessors, (686), 0 states have call successors, (0), 0 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 10:47:21,318 INFO L276 IsEmpty]: Start isEmpty. Operand 14809 states and 15157 transitions. [2024-11-18 10:47:21,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2078 [2024-11-18 10:47:21,343 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:47:21,343 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 10:47:21,358 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-18 10:47:21,544 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 10:47:21,544 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:47:21,545 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:47:21,545 INFO L85 PathProgramCache]: Analyzing trace with hash -394898374, now seen corresponding path program 1 times [2024-11-18 10:47:21,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:47:21,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53841815] [2024-11-18 10:47:21,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:47:21,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:47:21,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:47:24,696 INFO L134 CoverageAnalysis]: Checked inductivity of 7744 backedges. 4318 proven. 1581 refuted. 0 times theorem prover too weak. 1845 trivial. 0 not checked. [2024-11-18 10:47:24,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:47:24,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [53841815] [2024-11-18 10:47:24,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [53841815] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 10:47:24,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1192069858] [2024-11-18 10:47:24,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:47:24,696 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 10:47:24,697 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 10:47:24,699 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 10:47:24,700 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-18 10:47:25,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:47:25,209 INFO L255 TraceCheckSpWp]: Trace formula consists of 2381 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-18 10:47:25,225 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 10:47:25,446 INFO L134 CoverageAnalysis]: Checked inductivity of 7744 backedges. 4294 proven. 0 refuted. 0 times theorem prover too weak. 3450 trivial. 0 not checked. [2024-11-18 10:47:25,447 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 10:47:25,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1192069858] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:47:25,447 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 10:47:25,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-11-18 10:47:25,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319321792] [2024-11-18 10:47:25,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:47:25,449 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 10:47:25,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:47:25,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 10:47:25,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-18 10:47:25,450 INFO L87 Difference]: Start difference. First operand 14809 states and 15157 transitions. Second operand has 3 states, 3 states have (on average 218.0) internal successors, (654), 3 states have internal predecessors, (654), 0 states have call successors, (0), 0 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 10:47:26,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:47:26,154 INFO L93 Difference]: Finished difference Result 29945 states and 30650 transitions. [2024-11-18 10:47:26,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 10:47:26,155 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 218.0) internal successors, (654), 3 states have internal predecessors, (654), 0 states have call successors, (0), 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 2077 [2024-11-18 10:47:26,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:47:26,167 INFO L225 Difference]: With dead ends: 29945 [2024-11-18 10:47:26,167 INFO L226 Difference]: Without dead ends: 15467 [2024-11-18 10:47:26,177 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2082 GetRequests, 2078 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-18 10:47:26,178 INFO L432 NwaCegarLoop]: 426 mSDtfsCounter, 263 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 758 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 263 SdHoareTripleChecker+Valid, 432 SdHoareTripleChecker+Invalid, 767 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 758 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-18 10:47:26,178 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [263 Valid, 432 Invalid, 767 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 758 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-18 10:47:26,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15467 states. [2024-11-18 10:47:26,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15467 to 15467. [2024-11-18 10:47:26,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15467 states, 15466 states have (on average 1.022824259666365) internal successors, (15819), 15466 states have internal predecessors, (15819), 0 states have call successors, (0), 0 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 10:47:26,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15467 states to 15467 states and 15819 transitions. [2024-11-18 10:47:26,347 INFO L78 Accepts]: Start accepts. Automaton has 15467 states and 15819 transitions. Word has length 2077 [2024-11-18 10:47:26,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:47:26,348 INFO L471 AbstractCegarLoop]: Abstraction has 15467 states and 15819 transitions. [2024-11-18 10:47:26,348 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 218.0) internal successors, (654), 3 states have internal predecessors, (654), 0 states have call successors, (0), 0 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 10:47:26,348 INFO L276 IsEmpty]: Start isEmpty. Operand 15467 states and 15819 transitions. [2024-11-18 10:47:26,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2162 [2024-11-18 10:47:26,373 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:47:26,374 INFO L215 NwaCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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] [2024-11-18 10:47:26,388 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-18 10:47:26,574 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 10:47:26,575 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:47:26,575 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:47:26,576 INFO L85 PathProgramCache]: Analyzing trace with hash 1070975489, now seen corresponding path program 1 times [2024-11-18 10:47:26,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:47:26,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449898758] [2024-11-18 10:47:26,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:47:26,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:47:26,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat