./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem13_label34.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 803cd42f Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/eca-rers2012/Problem13_label34.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 c727ce378f9c6151587faf5638863d5f3634ffe42c74bcfcd0e6318a1faa4f2e --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-803cd42-m [2024-11-21 22:14:48,923 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-21 22:14:48,975 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-21 22:14:48,978 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-21 22:14:48,978 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-21 22:14:49,002 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-21 22:14:49,003 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-21 22:14:49,003 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-21 22:14:49,004 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-21 22:14:49,005 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-21 22:14:49,005 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-21 22:14:49,005 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-21 22:14:49,006 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-21 22:14:49,007 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-21 22:14:49,008 INFO L153 SettingsManager]: * Use SBE=true [2024-11-21 22:14:49,008 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-21 22:14:49,008 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-21 22:14:49,008 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-21 22:14:49,009 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-21 22:14:49,009 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-21 22:14:49,009 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-21 22:14:49,009 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-21 22:14:49,010 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-21 22:14:49,010 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-21 22:14:49,010 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-21 22:14:49,010 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-21 22:14:49,011 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-21 22:14:49,011 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-21 22:14:49,011 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-21 22:14:49,012 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-21 22:14:49,012 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-21 22:14:49,012 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-21 22:14:49,012 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-21 22:14:49,013 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-21 22:14:49,013 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-21 22:14:49,013 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-21 22:14:49,013 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-21 22:14:49,014 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-21 22:14:49,014 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-21 22:14:49,014 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-21 22:14:49,014 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-21 22:14:49,016 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-21 22:14:49,016 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c727ce378f9c6151587faf5638863d5f3634ffe42c74bcfcd0e6318a1faa4f2e [2024-11-21 22:14:49,242 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-21 22:14:49,266 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-21 22:14:49,269 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-21 22:14:49,270 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-21 22:14:49,270 INFO L274 PluginConnector]: CDTParser initialized [2024-11-21 22:14:49,271 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem13_label34.c [2024-11-21 22:14:50,468 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-21 22:14:50,812 INFO L384 CDTParser]: Found 1 translation units. [2024-11-21 22:14:50,813 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem13_label34.c [2024-11-21 22:14:50,839 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/581365ef1/d5bc2a9fa602476597bd36a348569402/FLAG59467e7d4 [2024-11-21 22:14:50,851 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/581365ef1/d5bc2a9fa602476597bd36a348569402 [2024-11-21 22:14:50,853 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-21 22:14:50,856 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-21 22:14:50,857 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-21 22:14:50,857 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-21 22:14:50,862 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-21 22:14:50,862 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 10:14:50" (1/1) ... [2024-11-21 22:14:50,863 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5971e0c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:14:50, skipping insertion in model container [2024-11-21 22:14:50,863 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 10:14:50" (1/1) ... [2024-11-21 22:14:50,944 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-21 22:14:51,169 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/Problem13_label34.c[7959,7972] [2024-11-21 22:14:51,794 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-21 22:14:51,804 INFO L200 MainTranslator]: Completed pre-run [2024-11-21 22:14:51,828 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/Problem13_label34.c[7959,7972] [2024-11-21 22:14:52,156 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-21 22:14:52,177 INFO L204 MainTranslator]: Completed translation [2024-11-21 22:14:52,178 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:14:52 WrapperNode [2024-11-21 22:14:52,178 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-21 22:14:52,179 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-21 22:14:52,179 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-21 22:14:52,179 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-21 22:14:52,184 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:14:52" (1/1) ... [2024-11-21 22:14:52,228 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:14:52" (1/1) ... [2024-11-21 22:14:52,658 INFO L138 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 5587 [2024-11-21 22:14:52,659 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-21 22:14:52,660 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-21 22:14:52,660 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-21 22:14:52,660 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-21 22:14:52,669 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:14:52" (1/1) ... [2024-11-21 22:14:52,669 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:14:52" (1/1) ... [2024-11-21 22:14:52,806 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:14:52" (1/1) ... [2024-11-21 22:14:52,954 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]. [2024-11-21 22:14:52,955 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:14:52" (1/1) ... [2024-11-21 22:14:52,955 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:14:52" (1/1) ... [2024-11-21 22:14:53,084 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:14:52" (1/1) ... [2024-11-21 22:14:53,109 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:14:52" (1/1) ... [2024-11-21 22:14:53,138 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:14:52" (1/1) ... [2024-11-21 22:14:53,153 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:14:52" (1/1) ... [2024-11-21 22:14:53,226 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-21 22:14:53,227 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-21 22:14:53,227 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-21 22:14:53,227 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-21 22:14:53,227 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:14:52" (1/1) ... [2024-11-21 22:14:53,232 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-21 22:14:53,240 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 22:14:53,254 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) [2024-11-21 22:14:53,255 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 [2024-11-21 22:14:53,292 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-21 22:14:53,292 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-21 22:14:53,292 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-21 22:14:53,292 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-21 22:14:53,350 INFO L238 CfgBuilder]: Building ICFG [2024-11-21 22:14:53,351 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-21 22:14:58,158 INFO L? ?]: Removed 738 outVars from TransFormulas that were not future-live. [2024-11-21 22:14:58,158 INFO L287 CfgBuilder]: Performing block encoding [2024-11-21 22:14:58,193 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-21 22:14:58,196 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-21 22:14:58,196 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:14:58 BoogieIcfgContainer [2024-11-21 22:14:58,196 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-21 22:14:58,198 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-21 22:14:58,198 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-21 22:14:58,200 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-21 22:14:58,201 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 10:14:50" (1/3) ... [2024-11-21 22:14:58,201 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@bf70a29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 10:14:58, skipping insertion in model container [2024-11-21 22:14:58,201 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:14:52" (2/3) ... [2024-11-21 22:14:58,201 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@bf70a29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 10:14:58, skipping insertion in model container [2024-11-21 22:14:58,202 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:14:58" (3/3) ... [2024-11-21 22:14:58,202 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label34.c [2024-11-21 22:14:58,215 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-21 22:14:58,216 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-21 22:14:58,286 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-21 22:14:58,290 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;@2e1df7a9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-21 22:14:58,291 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-21 22:14:58,299 INFO L276 IsEmpty]: Start isEmpty. Operand has 1098 states, 1096 states have (on average 1.8275547445255473) internal successors, (2003), 1097 states have internal predecessors, (2003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:14:58,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-21 22:14:58,305 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 22:14:58,305 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 22:14:58,306 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 22:14:58,309 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 22:14:58,310 INFO L85 PathProgramCache]: Analyzing trace with hash -2158734, now seen corresponding path program 1 times [2024-11-21 22:14:58,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 22:14:58,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496973846] [2024-11-21 22:14:58,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:14:58,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 22:14:58,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:14:58,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-21 22:14:58,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 22:14:58,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496973846] [2024-11-21 22:14:58,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1496973846] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 22:14:58,630 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-21 22:14:58,630 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-21 22:14:58,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412773490] [2024-11-21 22:14:58,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 22:14:58,634 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-21 22:14:58,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 22:14:58,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-21 22:14:58,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-21 22:14:58,654 INFO L87 Difference]: Start difference. First operand has 1098 states, 1096 states have (on average 1.8275547445255473) internal successors, (2003), 1097 states have internal predecessors, (2003), 0 states have call successors, (0), 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 18.666666666666668) internal successors, (56), 2 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:15:02,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 22:15:02,105 INFO L93 Difference]: Finished difference Result 3082 states and 5689 transitions. [2024-11-21 22:15:02,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 22:15:02,108 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 2 states have internal predecessors, (56), 0 states have call successors, (0), 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 56 [2024-11-21 22:15:02,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 22:15:02,132 INFO L225 Difference]: With dead ends: 3082 [2024-11-21 22:15:02,132 INFO L226 Difference]: Without dead ends: 1899 [2024-11-21 22:15:02,140 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 [2024-11-21 22:15:02,143 INFO L432 NwaCegarLoop]: 470 mSDtfsCounter, 983 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 2955 mSolverCounterSat, 599 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 983 SdHoareTripleChecker+Valid, 641 SdHoareTripleChecker+Invalid, 3554 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 599 IncrementalHoareTripleChecker+Valid, 2955 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2024-11-21 22:15:02,144 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [983 Valid, 641 Invalid, 3554 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [599 Valid, 2955 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2024-11-21 22:15:02,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1899 states. [2024-11-21 22:15:02,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1899 to 1894. [2024-11-21 22:15:02,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1894 states, 1893 states have (on average 1.7374537770734284) internal successors, (3289), 1893 states have internal predecessors, (3289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:15:02,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1894 states to 1894 states and 3289 transitions. [2024-11-21 22:15:02,264 INFO L78 Accepts]: Start accepts. Automaton has 1894 states and 3289 transitions. Word has length 56 [2024-11-21 22:15:02,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 22:15:02,265 INFO L471 AbstractCegarLoop]: Abstraction has 1894 states and 3289 transitions. [2024-11-21 22:15:02,265 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 2 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:15:02,265 INFO L276 IsEmpty]: Start isEmpty. Operand 1894 states and 3289 transitions. [2024-11-21 22:15:02,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2024-11-21 22:15:02,268 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 22:15:02,268 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-21 22:15:02,269 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-21 22:15:02,269 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 22:15:02,270 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 22:15:02,270 INFO L85 PathProgramCache]: Analyzing trace with hash 2024645466, now seen corresponding path program 1 times [2024-11-21 22:15:02,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 22:15:02,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50641828] [2024-11-21 22:15:02,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:15:02,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 22:15:02,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:15:02,501 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-21 22:15:02,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 22:15:02,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [50641828] [2024-11-21 22:15:02,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [50641828] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 22:15:02,503 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-21 22:15:02,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-21 22:15:02,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226989526] [2024-11-21 22:15:02,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 22:15:02,506 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-21 22:15:02,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 22:15:02,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-21 22:15:02,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-21 22:15:02,507 INFO L87 Difference]: Start difference. First operand 1894 states and 3289 transitions. Second operand has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 2 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:15:06,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 22:15:06,024 INFO L93 Difference]: Finished difference Result 5384 states and 9441 transitions. [2024-11-21 22:15:06,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 22:15:06,025 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 2 states have internal predecessors, (121), 0 states have call successors, (0), 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 121 [2024-11-21 22:15:06,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 22:15:06,033 INFO L225 Difference]: With dead ends: 5384 [2024-11-21 22:15:06,034 INFO L226 Difference]: Without dead ends: 3492 [2024-11-21 22:15:06,035 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 [2024-11-21 22:15:06,036 INFO L432 NwaCegarLoop]: 860 mSDtfsCounter, 922 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 2310 mSolverCounterSat, 879 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 922 SdHoareTripleChecker+Valid, 1013 SdHoareTripleChecker+Invalid, 3189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 879 IncrementalHoareTripleChecker+Valid, 2310 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2024-11-21 22:15:06,036 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [922 Valid, 1013 Invalid, 3189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [879 Valid, 2310 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2024-11-21 22:15:06,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3492 states. [2024-11-21 22:15:06,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3492 to 3491. [2024-11-21 22:15:06,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3491 states, 3490 states have (on average 1.5383954154727795) internal successors, (5369), 3490 states have internal predecessors, (5369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:15:06,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3491 states to 3491 states and 5369 transitions. [2024-11-21 22:15:06,075 INFO L78 Accepts]: Start accepts. Automaton has 3491 states and 5369 transitions. Word has length 121 [2024-11-21 22:15:06,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 22:15:06,075 INFO L471 AbstractCegarLoop]: Abstraction has 3491 states and 5369 transitions. [2024-11-21 22:15:06,076 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 2 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:15:06,076 INFO L276 IsEmpty]: Start isEmpty. Operand 3491 states and 5369 transitions. [2024-11-21 22:15:06,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2024-11-21 22:15:06,077 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 22:15:06,078 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-21 22:15:06,078 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-21 22:15:06,078 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 22:15:06,078 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 22:15:06,078 INFO L85 PathProgramCache]: Analyzing trace with hash 1368710357, now seen corresponding path program 1 times [2024-11-21 22:15:06,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 22:15:06,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052395021] [2024-11-21 22:15:06,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:15:06,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 22:15:06,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:15:06,161 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-21 22:15:06,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 22:15:06,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052395021] [2024-11-21 22:15:06,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2052395021] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 22:15:06,162 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-21 22:15:06,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-21 22:15:06,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108901778] [2024-11-21 22:15:06,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 22:15:06,163 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-21 22:15:06,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 22:15:06,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-21 22:15:06,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-21 22:15:06,164 INFO L87 Difference]: Start difference. First operand 3491 states and 5369 transitions. Second operand has 3 states, 3 states have (on average 41.0) internal successors, (123), 2 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:15:08,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 22:15:08,647 INFO L93 Difference]: Finished difference Result 10169 states and 15700 transitions. [2024-11-21 22:15:08,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 22:15:08,647 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 2 states have internal predecessors, (123), 0 states have call successors, (0), 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 123 [2024-11-21 22:15:08,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 22:15:08,663 INFO L225 Difference]: With dead ends: 10169 [2024-11-21 22:15:08,663 INFO L226 Difference]: Without dead ends: 6680 [2024-11-21 22:15:08,668 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 [2024-11-21 22:15:08,669 INFO L432 NwaCegarLoop]: 714 mSDtfsCounter, 977 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 2533 mSolverCounterSat, 775 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 977 SdHoareTripleChecker+Valid, 847 SdHoareTripleChecker+Invalid, 3308 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 775 IncrementalHoareTripleChecker+Valid, 2533 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2024-11-21 22:15:08,669 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [977 Valid, 847 Invalid, 3308 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [775 Valid, 2533 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2024-11-21 22:15:08,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6680 states. [2024-11-21 22:15:08,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6680 to 6669. [2024-11-21 22:15:08,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6669 states, 6668 states have (on average 1.375224955008998) internal successors, (9170), 6668 states have internal predecessors, (9170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:15:08,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6669 states to 6669 states and 9170 transitions. [2024-11-21 22:15:08,756 INFO L78 Accepts]: Start accepts. Automaton has 6669 states and 9170 transitions. Word has length 123 [2024-11-21 22:15:08,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 22:15:08,757 INFO L471 AbstractCegarLoop]: Abstraction has 6669 states and 9170 transitions. [2024-11-21 22:15:08,758 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 2 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:15:08,760 INFO L276 IsEmpty]: Start isEmpty. Operand 6669 states and 9170 transitions. [2024-11-21 22:15:08,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2024-11-21 22:15:08,764 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 22:15:08,764 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-21 22:15:08,764 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-21 22:15:08,764 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 22:15:08,765 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 22:15:08,765 INFO L85 PathProgramCache]: Analyzing trace with hash -1275120761, now seen corresponding path program 1 times [2024-11-21 22:15:08,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 22:15:08,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535964483] [2024-11-21 22:15:08,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:15:08,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 22:15:08,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:15:09,129 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-21 22:15:09,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 22:15:09,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1535964483] [2024-11-21 22:15:09,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1535964483] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 22:15:09,130 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-21 22:15:09,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-21 22:15:09,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239651207] [2024-11-21 22:15:09,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 22:15:09,131 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-21 22:15:09,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 22:15:09,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-21 22:15:09,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-21 22:15:09,131 INFO L87 Difference]: Start difference. First operand 6669 states and 9170 transitions. Second operand has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 2 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:15:11,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 22:15:11,294 INFO L93 Difference]: Finished difference Result 14123 states and 19185 transitions. [2024-11-21 22:15:11,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 22:15:11,294 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 2 states have internal predecessors, (167), 0 states have call successors, (0), 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 167 [2024-11-21 22:15:11,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 22:15:11,312 INFO L225 Difference]: With dead ends: 14123 [2024-11-21 22:15:11,312 INFO L226 Difference]: Without dead ends: 7456 [2024-11-21 22:15:11,320 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 [2024-11-21 22:15:11,321 INFO L432 NwaCegarLoop]: 1086 mSDtfsCounter, 678 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 2523 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 678 SdHoareTripleChecker+Valid, 1215 SdHoareTripleChecker+Invalid, 2577 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 2523 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-11-21 22:15:11,322 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [678 Valid, 1215 Invalid, 2577 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 2523 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-11-21 22:15:11,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7456 states. [2024-11-21 22:15:11,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7456 to 7456. [2024-11-21 22:15:11,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7456 states, 7455 states have (on average 1.3362843729040912) internal successors, (9962), 7455 states have internal predecessors, (9962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:15:11,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7456 states to 7456 states and 9962 transitions. [2024-11-21 22:15:11,418 INFO L78 Accepts]: Start accepts. Automaton has 7456 states and 9962 transitions. Word has length 167 [2024-11-21 22:15:11,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 22:15:11,419 INFO L471 AbstractCegarLoop]: Abstraction has 7456 states and 9962 transitions. [2024-11-21 22:15:11,419 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 2 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:15:11,420 INFO L276 IsEmpty]: Start isEmpty. Operand 7456 states and 9962 transitions. [2024-11-21 22:15:11,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2024-11-21 22:15:11,421 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 22:15:11,421 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-21 22:15:11,421 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-21 22:15:11,422 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 22:15:11,422 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 22:15:11,422 INFO L85 PathProgramCache]: Analyzing trace with hash 1023420253, now seen corresponding path program 1 times [2024-11-21 22:15:11,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 22:15:11,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033634749] [2024-11-21 22:15:11,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:15:11,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 22:15:11,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:15:11,604 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-21 22:15:11,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 22:15:11,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033634749] [2024-11-21 22:15:11,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1033634749] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 22:15:11,605 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-21 22:15:11,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-21 22:15:11,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686945751] [2024-11-21 22:15:11,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 22:15:11,607 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-21 22:15:11,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 22:15:11,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-21 22:15:11,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-21 22:15:11,609 INFO L87 Difference]: Start difference. First operand 7456 states and 9962 transitions. Second operand has 4 states, 4 states have (on average 45.25) internal successors, (181), 3 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:15:17,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 22:15:17,077 INFO L93 Difference]: Finished difference Result 26116 states and 35959 transitions. [2024-11-21 22:15:17,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-21 22:15:17,078 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 45.25) internal successors, (181), 3 states have internal predecessors, (181), 0 states have call successors, (0), 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 181 [2024-11-21 22:15:17,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 22:15:17,115 INFO L225 Difference]: With dead ends: 26116 [2024-11-21 22:15:17,115 INFO L226 Difference]: Without dead ends: 19449 [2024-11-21 22:15:17,124 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-21 22:15:17,127 INFO L432 NwaCegarLoop]: 899 mSDtfsCounter, 1633 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 6106 mSolverCounterSat, 650 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1633 SdHoareTripleChecker+Valid, 1071 SdHoareTripleChecker+Invalid, 6756 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 650 IncrementalHoareTripleChecker+Valid, 6106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2024-11-21 22:15:17,127 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1633 Valid, 1071 Invalid, 6756 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [650 Valid, 6106 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2024-11-21 22:15:17,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19449 states. [2024-11-21 22:15:17,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19449 to 19303. [2024-11-21 22:15:17,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19303 states, 19302 states have (on average 1.2778468552481608) internal successors, (24665), 19302 states have internal predecessors, (24665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:15:17,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19303 states to 19303 states and 24665 transitions. [2024-11-21 22:15:17,376 INFO L78 Accepts]: Start accepts. Automaton has 19303 states and 24665 transitions. Word has length 181 [2024-11-21 22:15:17,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 22:15:17,376 INFO L471 AbstractCegarLoop]: Abstraction has 19303 states and 24665 transitions. [2024-11-21 22:15:17,377 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 45.25) internal successors, (181), 3 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:15:17,377 INFO L276 IsEmpty]: Start isEmpty. Operand 19303 states and 24665 transitions. [2024-11-21 22:15:17,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2024-11-21 22:15:17,381 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 22:15:17,381 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 22:15:17,382 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-21 22:15:17,382 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 22:15:17,382 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 22:15:17,382 INFO L85 PathProgramCache]: Analyzing trace with hash -1740885801, now seen corresponding path program 1 times [2024-11-21 22:15:17,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 22:15:17,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526702249] [2024-11-21 22:15:17,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:15:17,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 22:15:17,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:15:17,653 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 107 proven. 0 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2024-11-21 22:15:17,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 22:15:17,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526702249] [2024-11-21 22:15:17,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [526702249] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 22:15:17,654 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-21 22:15:17,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-21 22:15:17,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556146404] [2024-11-21 22:15:17,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 22:15:17,655 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-21 22:15:17,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 22:15:17,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-21 22:15:17,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-21 22:15:17,656 INFO L87 Difference]: Start difference. First operand 19303 states and 24665 transitions. Second operand has 3 states, 3 states have (on average 58.0) internal successors, (174), 2 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:15:19,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 22:15:19,920 INFO L93 Difference]: Finished difference Result 33881 states and 44171 transitions. [2024-11-21 22:15:19,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 22:15:19,920 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.0) internal successors, (174), 2 states have internal predecessors, (174), 0 states have call successors, (0), 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 268 [2024-11-21 22:15:19,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 22:15:19,950 INFO L225 Difference]: With dead ends: 33881 [2024-11-21 22:15:19,951 INFO L226 Difference]: Without dead ends: 19312 [2024-11-21 22:15:19,965 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 [2024-11-21 22:15:19,966 INFO L432 NwaCegarLoop]: 1028 mSDtfsCounter, 728 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 2715 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 728 SdHoareTripleChecker+Valid, 1212 SdHoareTripleChecker+Invalid, 2719 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 2715 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-11-21 22:15:19,966 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [728 Valid, 1212 Invalid, 2719 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 2715 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-11-21 22:15:20,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19312 states. [2024-11-21 22:15:20,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19312 to 19303. [2024-11-21 22:15:20,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19303 states, 19302 states have (on average 1.2765516526784788) internal successors, (24640), 19302 states have internal predecessors, (24640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:15:20,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19303 states to 19303 states and 24640 transitions. [2024-11-21 22:15:20,295 INFO L78 Accepts]: Start accepts. Automaton has 19303 states and 24640 transitions. Word has length 268 [2024-11-21 22:15:20,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 22:15:20,296 INFO L471 AbstractCegarLoop]: Abstraction has 19303 states and 24640 transitions. [2024-11-21 22:15:20,296 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.0) internal successors, (174), 2 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:15:20,297 INFO L276 IsEmpty]: Start isEmpty. Operand 19303 states and 24640 transitions. [2024-11-21 22:15:20,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2024-11-21 22:15:20,300 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 22:15:20,300 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 22:15:20,300 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-21 22:15:20,300 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 22:15:20,301 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 22:15:20,301 INFO L85 PathProgramCache]: Analyzing trace with hash 2013422099, now seen corresponding path program 1 times [2024-11-21 22:15:20,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 22:15:20,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333619512] [2024-11-21 22:15:20,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:15:20,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 22:15:20,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:15:20,498 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 195 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-21 22:15:20,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 22:15:20,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1333619512] [2024-11-21 22:15:20,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1333619512] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 22:15:20,499 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-21 22:15:20,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-21 22:15:20,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984354875] [2024-11-21 22:15:20,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 22:15:20,500 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-21 22:15:20,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 22:15:20,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-21 22:15:20,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-21 22:15:20,501 INFO L87 Difference]: Start difference. First operand 19303 states and 24640 transitions. Second operand has 3 states, 3 states have (on average 90.0) internal successors, (270), 3 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:15:23,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 22:15:23,245 INFO L93 Difference]: Finished difference Result 51975 states and 67214 transitions. [2024-11-21 22:15:23,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 22:15:23,246 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 90.0) internal successors, (270), 3 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 270 [2024-11-21 22:15:23,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 22:15:23,289 INFO L225 Difference]: With dead ends: 51975 [2024-11-21 22:15:23,289 INFO L226 Difference]: Without dead ends: 32674 [2024-11-21 22:15:23,309 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 [2024-11-21 22:15:23,310 INFO L432 NwaCegarLoop]: 1854 mSDtfsCounter, 842 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 2479 mSolverCounterSat, 807 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 842 SdHoareTripleChecker+Valid, 1994 SdHoareTripleChecker+Invalid, 3286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 807 IncrementalHoareTripleChecker+Valid, 2479 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-11-21 22:15:23,310 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [842 Valid, 1994 Invalid, 3286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [807 Valid, 2479 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-11-21 22:15:23,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32674 states. [2024-11-21 22:15:23,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32674 to 31090. [2024-11-21 22:15:23,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31090 states, 31089 states have (on average 1.2295667277815305) internal successors, (38226), 31089 states have internal predecessors, (38226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:15:23,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31090 states to 31090 states and 38226 transitions. [2024-11-21 22:15:23,582 INFO L78 Accepts]: Start accepts. Automaton has 31090 states and 38226 transitions. Word has length 270 [2024-11-21 22:15:23,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 22:15:23,583 INFO L471 AbstractCegarLoop]: Abstraction has 31090 states and 38226 transitions. [2024-11-21 22:15:23,583 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 90.0) internal successors, (270), 3 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:15:23,583 INFO L276 IsEmpty]: Start isEmpty. Operand 31090 states and 38226 transitions. [2024-11-21 22:15:23,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 293 [2024-11-21 22:15:23,586 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 22:15:23,586 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 22:15:23,587 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-21 22:15:23,587 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 22:15:23,587 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 22:15:23,587 INFO L85 PathProgramCache]: Analyzing trace with hash -1544530878, now seen corresponding path program 1 times [2024-11-21 22:15:23,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 22:15:23,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89578781] [2024-11-21 22:15:23,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:15:23,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 22:15:23,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:15:23,719 INFO L134 CoverageAnalysis]: Checked inductivity of 366 backedges. 312 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2024-11-21 22:15:23,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 22:15:23,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89578781] [2024-11-21 22:15:23,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [89578781] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 22:15:23,719 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-21 22:15:23,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-21 22:15:23,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034222125] [2024-11-21 22:15:23,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 22:15:23,721 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-21 22:15:23,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 22:15:23,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-21 22:15:23,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-21 22:15:23,721 INFO L87 Difference]: Start difference. First operand 31090 states and 38226 transitions. Second operand has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:15:26,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 22:15:26,529 INFO L93 Difference]: Finished difference Result 85799 states and 106634 transitions. [2024-11-21 22:15:26,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 22:15:26,529 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 0 states have call successors, (0), 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 292 [2024-11-21 22:15:26,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 22:15:26,590 INFO L225 Difference]: With dead ends: 85799 [2024-11-21 22:15:26,591 INFO L226 Difference]: Without dead ends: 55498 [2024-11-21 22:15:26,619 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 [2024-11-21 22:15:26,619 INFO L432 NwaCegarLoop]: 784 mSDtfsCounter, 883 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 2379 mSolverCounterSat, 916 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 883 SdHoareTripleChecker+Valid, 902 SdHoareTripleChecker+Invalid, 3295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 916 IncrementalHoareTripleChecker+Valid, 2379 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2024-11-21 22:15:26,620 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [883 Valid, 902 Invalid, 3295 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [916 Valid, 2379 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2024-11-21 22:15:26,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55498 states. [2024-11-21 22:15:27,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55498 to 54701. [2024-11-21 22:15:27,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54701 states, 54700 states have (on average 1.186764168190128) internal successors, (64916), 54700 states have internal predecessors, (64916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:15:27,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54701 states to 54701 states and 64916 transitions. [2024-11-21 22:15:27,119 INFO L78 Accepts]: Start accepts. Automaton has 54701 states and 64916 transitions. Word has length 292 [2024-11-21 22:15:27,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 22:15:27,120 INFO L471 AbstractCegarLoop]: Abstraction has 54701 states and 64916 transitions. [2024-11-21 22:15:27,120 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:15:27,120 INFO L276 IsEmpty]: Start isEmpty. Operand 54701 states and 64916 transitions. [2024-11-21 22:15:27,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 348 [2024-11-21 22:15:27,125 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 22:15:27,125 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 22:15:27,125 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-21 22:15:27,126 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 22:15:27,126 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 22:15:27,126 INFO L85 PathProgramCache]: Analyzing trace with hash -1243297026, now seen corresponding path program 1 times [2024-11-21 22:15:27,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 22:15:27,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254828586] [2024-11-21 22:15:27,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:15:27,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 22:15:27,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:15:27,297 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 107 proven. 0 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2024-11-21 22:15:27,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 22:15:27,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254828586] [2024-11-21 22:15:27,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1254828586] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 22:15:27,297 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-21 22:15:27,298 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-21 22:15:27,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100690406] [2024-11-21 22:15:27,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 22:15:27,298 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-21 22:15:27,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 22:15:27,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-21 22:15:27,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-21 22:15:27,300 INFO L87 Difference]: Start difference. First operand 54701 states and 64916 transitions. Second operand has 3 states, 3 states have (on average 74.66666666666667) internal successors, (224), 3 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:15:30,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 22:15:30,225 INFO L93 Difference]: Finished difference Result 129084 states and 155214 transitions. [2024-11-21 22:15:30,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 22:15:30,226 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 74.66666666666667) internal successors, (224), 3 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 347 [2024-11-21 22:15:30,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 22:15:30,303 INFO L225 Difference]: With dead ends: 129084 [2024-11-21 22:15:30,303 INFO L226 Difference]: Without dead ends: 75172 [2024-11-21 22:15:30,342 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 [2024-11-21 22:15:30,342 INFO L432 NwaCegarLoop]: 1815 mSDtfsCounter, 805 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 2557 mSolverCounterSat, 723 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 805 SdHoareTripleChecker+Valid, 1959 SdHoareTripleChecker+Invalid, 3280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 723 IncrementalHoareTripleChecker+Valid, 2557 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-11-21 22:15:30,342 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [805 Valid, 1959 Invalid, 3280 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [723 Valid, 2557 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-11-21 22:15:30,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75172 states. [2024-11-21 22:15:30,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75172 to 74380. [2024-11-21 22:15:30,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74380 states, 74379 states have (on average 1.1514271501364632) internal successors, (85642), 74379 states have internal predecessors, (85642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:15:31,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74380 states to 74380 states and 85642 transitions. [2024-11-21 22:15:31,311 INFO L78 Accepts]: Start accepts. Automaton has 74380 states and 85642 transitions. Word has length 347 [2024-11-21 22:15:31,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 22:15:31,311 INFO L471 AbstractCegarLoop]: Abstraction has 74380 states and 85642 transitions. [2024-11-21 22:15:31,311 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 74.66666666666667) internal successors, (224), 3 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:15:31,312 INFO L276 IsEmpty]: Start isEmpty. Operand 74380 states and 85642 transitions. [2024-11-21 22:15:31,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 363 [2024-11-21 22:15:31,317 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 22:15:31,317 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-21 22:15:31,317 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-21 22:15:31,317 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 22:15:31,318 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 22:15:31,318 INFO L85 PathProgramCache]: Analyzing trace with hash 652420715, now seen corresponding path program 1 times [2024-11-21 22:15:31,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 22:15:31,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282735807] [2024-11-21 22:15:31,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:15:31,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 22:15:31,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:15:32,358 INFO L134 CoverageAnalysis]: Checked inductivity of 403 backedges. 239 proven. 110 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2024-11-21 22:15:32,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 22:15:32,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282735807] [2024-11-21 22:15:32,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [282735807] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-21 22:15:32,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2051792627] [2024-11-21 22:15:32,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:15:32,359 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 22:15:32,359 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 22:15:32,360 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) [2024-11-21 22:15:32,361 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-21 22:15:32,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:15:32,480 INFO L255 TraceCheckSpWp]: Trace formula consists of 498 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-21 22:15:32,489 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-21 22:15:32,597 INFO L134 CoverageAnalysis]: Checked inductivity of 403 backedges. 290 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2024-11-21 22:15:32,600 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-21 22:15:32,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2051792627] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 22:15:32,600 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-21 22:15:32,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2024-11-21 22:15:32,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907577549] [2024-11-21 22:15:32,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 22:15:32,601 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-21 22:15:32,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 22:15:32,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-21 22:15:32,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-21 22:15:32,601 INFO L87 Difference]: Start difference. First operand 74380 states and 85642 transitions. Second operand has 3 states, 3 states have (on average 83.33333333333333) internal successors, (250), 3 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:15:35,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 22:15:35,114 INFO L93 Difference]: Finished difference Result 147962 states and 170482 transitions. [2024-11-21 22:15:35,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 22:15:35,115 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 83.33333333333333) internal successors, (250), 3 states have internal predecessors, (250), 0 states have call successors, (0), 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 362 [2024-11-21 22:15:35,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 22:15:35,190 INFO L225 Difference]: With dead ends: 147962 [2024-11-21 22:15:35,190 INFO L226 Difference]: Without dead ends: 74371 [2024-11-21 22:15:35,230 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 366 GetRequests, 361 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-21 22:15:35,230 INFO L432 NwaCegarLoop]: 689 mSDtfsCounter, 1078 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 2395 mSolverCounterSat, 527 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1078 SdHoareTripleChecker+Valid, 817 SdHoareTripleChecker+Invalid, 2922 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 527 IncrementalHoareTripleChecker+Valid, 2395 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-11-21 22:15:35,230 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1078 Valid, 817 Invalid, 2922 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [527 Valid, 2395 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-11-21 22:15:35,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74371 states. [2024-11-21 22:15:35,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74371 to 74370. [2024-11-21 22:15:36,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74370 states, 74369 states have (on average 1.1130847530557086) internal successors, (82779), 74369 states have internal predecessors, (82779), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:15:36,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74370 states to 74370 states and 82779 transitions. [2024-11-21 22:15:36,128 INFO L78 Accepts]: Start accepts. Automaton has 74370 states and 82779 transitions. Word has length 362 [2024-11-21 22:15:36,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 22:15:36,128 INFO L471 AbstractCegarLoop]: Abstraction has 74370 states and 82779 transitions. [2024-11-21 22:15:36,128 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 83.33333333333333) internal successors, (250), 3 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:15:36,128 INFO L276 IsEmpty]: Start isEmpty. Operand 74370 states and 82779 transitions. [2024-11-21 22:15:36,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 382 [2024-11-21 22:15:36,133 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 22:15:36,133 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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] [2024-11-21 22:15:36,141 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-21 22:15:36,334 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-21 22:15:36,334 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 22:15:36,335 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 22:15:36,335 INFO L85 PathProgramCache]: Analyzing trace with hash 315445644, now seen corresponding path program 1 times [2024-11-21 22:15:36,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 22:15:36,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590872706] [2024-11-21 22:15:36,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:15:36,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 22:15:36,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:15:36,992 INFO L134 CoverageAnalysis]: Checked inductivity of 648 backedges. 215 proven. 0 refuted. 0 times theorem prover too weak. 433 trivial. 0 not checked. [2024-11-21 22:15:36,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 22:15:36,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590872706] [2024-11-21 22:15:36,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1590872706] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 22:15:36,993 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-21 22:15:36,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-21 22:15:36,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084865154] [2024-11-21 22:15:36,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 22:15:36,994 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-21 22:15:36,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 22:15:36,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-21 22:15:36,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-21 22:15:36,995 INFO L87 Difference]: Start difference. First operand 74370 states and 82779 transitions. Second operand has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:15:39,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 22:15:39,622 INFO L93 Difference]: Finished difference Result 145587 states and 162051 transitions. [2024-11-21 22:15:39,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 22:15:39,623 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 381 [2024-11-21 22:15:39,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 22:15:39,690 INFO L225 Difference]: With dead ends: 145587 [2024-11-21 22:15:39,691 INFO L226 Difference]: Without dead ends: 72006 [2024-11-21 22:15:39,711 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-21 22:15:39,711 INFO L432 NwaCegarLoop]: 1342 mSDtfsCounter, 1146 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 2463 mSolverCounterSat, 444 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1146 SdHoareTripleChecker+Valid, 1421 SdHoareTripleChecker+Invalid, 2907 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 444 IncrementalHoareTripleChecker+Valid, 2463 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-11-21 22:15:39,711 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1146 Valid, 1421 Invalid, 2907 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [444 Valid, 2463 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-11-21 22:15:39,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72006 states. [2024-11-21 22:15:40,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72006 to 72005. [2024-11-21 22:15:40,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72005 states, 72004 states have (on average 1.0866618521193268) internal successors, (78244), 72004 states have internal predecessors, (78244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:15:40,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72005 states to 72005 states and 78244 transitions. [2024-11-21 22:15:40,317 INFO L78 Accepts]: Start accepts. Automaton has 72005 states and 78244 transitions. Word has length 381 [2024-11-21 22:15:40,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 22:15:40,317 INFO L471 AbstractCegarLoop]: Abstraction has 72005 states and 78244 transitions. [2024-11-21 22:15:40,318 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:15:40,318 INFO L276 IsEmpty]: Start isEmpty. Operand 72005 states and 78244 transitions. [2024-11-21 22:15:40,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 405 [2024-11-21 22:15:40,323 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 22:15:40,323 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 22:15:40,323 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-21 22:15:40,323 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 22:15:40,323 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 22:15:40,323 INFO L85 PathProgramCache]: Analyzing trace with hash -718507191, now seen corresponding path program 1 times [2024-11-21 22:15:40,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 22:15:40,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556384454] [2024-11-21 22:15:40,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:15:40,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 22:15:40,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:15:40,795 INFO L134 CoverageAnalysis]: Checked inductivity of 671 backedges. 498 proven. 0 refuted. 0 times theorem prover too weak. 173 trivial. 0 not checked. [2024-11-21 22:15:40,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 22:15:40,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556384454] [2024-11-21 22:15:40,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [556384454] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 22:15:40,796 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-21 22:15:40,796 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-21 22:15:40,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466859075] [2024-11-21 22:15:40,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 22:15:40,796 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-21 22:15:40,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 22:15:40,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-21 22:15:40,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-21 22:15:40,797 INFO L87 Difference]: Start difference. First operand 72005 states and 78244 transitions. Second operand has 4 states, 4 states have (on average 71.75) internal successors, (287), 3 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:15:46,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 22:15:46,204 INFO L93 Difference]: Finished difference Result 195375 states and 213138 transitions. [2024-11-21 22:15:46,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-21 22:15:46,205 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 71.75) internal successors, (287), 3 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 404 [2024-11-21 22:15:46,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 22:15:46,335 INFO L225 Difference]: With dead ends: 195375 [2024-11-21 22:15:46,336 INFO L226 Difference]: Without dead ends: 124159 [2024-11-21 22:15:46,360 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-21 22:15:46,361 INFO L432 NwaCegarLoop]: 560 mSDtfsCounter, 1708 mSDsluCounter, 235 mSDsCounter, 0 mSdLazyCounter, 6634 mSolverCounterSat, 1037 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1708 SdHoareTripleChecker+Valid, 795 SdHoareTripleChecker+Invalid, 7671 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1037 IncrementalHoareTripleChecker+Valid, 6634 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2024-11-21 22:15:46,361 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1708 Valid, 795 Invalid, 7671 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1037 Valid, 6634 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2024-11-21 22:15:46,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124159 states. [2024-11-21 22:15:47,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124159 to 121667. [2024-11-21 22:15:47,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121667 states, 121666 states have (on average 1.084608682787303) internal successors, (131960), 121666 states have internal predecessors, (131960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:15:47,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121667 states to 121667 states and 131960 transitions. [2024-11-21 22:15:47,761 INFO L78 Accepts]: Start accepts. Automaton has 121667 states and 131960 transitions. Word has length 404 [2024-11-21 22:15:47,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 22:15:47,762 INFO L471 AbstractCegarLoop]: Abstraction has 121667 states and 131960 transitions. [2024-11-21 22:15:47,762 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 71.75) internal successors, (287), 3 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:15:47,762 INFO L276 IsEmpty]: Start isEmpty. Operand 121667 states and 131960 transitions. [2024-11-21 22:15:47,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 438 [2024-11-21 22:15:47,770 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 22:15:47,770 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 22:15:47,770 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-21 22:15:47,770 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 22:15:47,770 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 22:15:47,770 INFO L85 PathProgramCache]: Analyzing trace with hash -2122716563, now seen corresponding path program 1 times [2024-11-21 22:15:47,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 22:15:47,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008493853] [2024-11-21 22:15:47,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:15:47,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 22:15:47,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:15:48,342 INFO L134 CoverageAnalysis]: Checked inductivity of 681 backedges. 409 proven. 0 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2024-11-21 22:15:48,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 22:15:48,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008493853] [2024-11-21 22:15:48,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1008493853] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 22:15:48,343 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-21 22:15:48,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-21 22:15:48,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050147430] [2024-11-21 22:15:48,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 22:15:48,343 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-21 22:15:48,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 22:15:48,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-21 22:15:48,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-21 22:15:48,345 INFO L87 Difference]: Start difference. First operand 121667 states and 131960 transitions. Second operand has 3 states, 3 states have (on average 85.0) internal successors, (255), 3 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:15:51,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 22:15:51,183 INFO L93 Difference]: Finished difference Result 274840 states and 297848 transitions. [2024-11-21 22:15:51,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 22:15:51,184 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 85.0) internal successors, (255), 3 states have internal predecessors, (255), 0 states have call successors, (0), 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 437 [2024-11-21 22:15:51,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 22:15:51,352 INFO L225 Difference]: With dead ends: 274840 [2024-11-21 22:15:51,352 INFO L226 Difference]: Without dead ends: 153962 [2024-11-21 22:15:51,394 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 [2024-11-21 22:15:51,395 INFO L432 NwaCegarLoop]: 997 mSDtfsCounter, 795 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 2480 mSolverCounterSat, 373 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 795 SdHoareTripleChecker+Valid, 1138 SdHoareTripleChecker+Invalid, 2853 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 373 IncrementalHoareTripleChecker+Valid, 2480 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-11-21 22:15:51,395 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [795 Valid, 1138 Invalid, 2853 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [373 Valid, 2480 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-11-21 22:15:51,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153962 states. [2024-11-21 22:15:52,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153962 to 150001. [2024-11-21 22:15:53,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150001 states, 150000 states have (on average 1.0774533333333334) internal successors, (161618), 150000 states have internal predecessors, (161618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:15:53,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150001 states to 150001 states and 161618 transitions. [2024-11-21 22:15:53,482 INFO L78 Accepts]: Start accepts. Automaton has 150001 states and 161618 transitions. Word has length 437 [2024-11-21 22:15:53,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 22:15:53,483 INFO L471 AbstractCegarLoop]: Abstraction has 150001 states and 161618 transitions. [2024-11-21 22:15:53,483 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 85.0) internal successors, (255), 3 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:15:53,483 INFO L276 IsEmpty]: Start isEmpty. Operand 150001 states and 161618 transitions. [2024-11-21 22:15:53,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 448 [2024-11-21 22:15:53,489 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 22:15:53,489 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 22:15:53,489 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-21 22:15:53,489 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 22:15:53,490 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 22:15:53,490 INFO L85 PathProgramCache]: Analyzing trace with hash -1901999821, now seen corresponding path program 1 times [2024-11-21 22:15:53,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 22:15:53,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51537080] [2024-11-21 22:15:53,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:15:53,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 22:15:53,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:15:54,481 INFO L134 CoverageAnalysis]: Checked inductivity of 691 backedges. 408 proven. 110 refuted. 0 times theorem prover too weak. 173 trivial. 0 not checked. [2024-11-21 22:15:54,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 22:15:54,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51537080] [2024-11-21 22:15:54,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [51537080] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-21 22:15:54,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [862683434] [2024-11-21 22:15:54,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:15:54,482 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 22:15:54,482 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 22:15:54,484 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) [2024-11-21 22:15:54,485 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-21 22:15:54,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:15:54,627 INFO L255 TraceCheckSpWp]: Trace formula consists of 612 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-21 22:15:54,634 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-21 22:15:54,709 INFO L134 CoverageAnalysis]: Checked inductivity of 691 backedges. 215 proven. 0 refuted. 0 times theorem prover too weak. 476 trivial. 0 not checked. [2024-11-21 22:15:54,709 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-21 22:15:54,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [862683434] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 22:15:54,710 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-21 22:15:54,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2024-11-21 22:15:54,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361440288] [2024-11-21 22:15:54,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 22:15:54,711 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-21 22:15:54,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 22:15:54,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-21 22:15:54,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-21 22:15:54,711 INFO L87 Difference]: Start difference. First operand 150001 states and 161618 transitions. Second operand has 3 states, 3 states have (on average 62.333333333333336) internal successors, (187), 3 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:15:58,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 22:15:58,074 INFO L93 Difference]: Finished difference Result 331486 states and 359581 transitions. [2024-11-21 22:15:58,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 22:15:58,075 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 62.333333333333336) internal successors, (187), 3 states have internal predecessors, (187), 0 states have call successors, (0), 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 447 [2024-11-21 22:15:58,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 22:15:58,289 INFO L225 Difference]: With dead ends: 331486 [2024-11-21 22:15:58,289 INFO L226 Difference]: Without dead ends: 182274 [2024-11-21 22:15:58,362 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 451 GetRequests, 446 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-21 22:15:58,362 INFO L432 NwaCegarLoop]: 807 mSDtfsCounter, 930 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 2420 mSolverCounterSat, 936 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 930 SdHoareTripleChecker+Valid, 889 SdHoareTripleChecker+Invalid, 3356 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 936 IncrementalHoareTripleChecker+Valid, 2420 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-11-21 22:15:58,362 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [930 Valid, 889 Invalid, 3356 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [936 Valid, 2420 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-11-21 22:15:58,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182274 states. [2024-11-21 22:16:00,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182274 to 180680. [2024-11-21 22:16:00,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180680 states, 180679 states have (on average 1.0821124757166023) internal successors, (195515), 180679 states have internal predecessors, (195515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:16:00,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180680 states to 180680 states and 195515 transitions. [2024-11-21 22:16:00,444 INFO L78 Accepts]: Start accepts. Automaton has 180680 states and 195515 transitions. Word has length 447 [2024-11-21 22:16:00,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 22:16:00,444 INFO L471 AbstractCegarLoop]: Abstraction has 180680 states and 195515 transitions. [2024-11-21 22:16:00,444 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 62.333333333333336) internal successors, (187), 3 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:16:00,444 INFO L276 IsEmpty]: Start isEmpty. Operand 180680 states and 195515 transitions. [2024-11-21 22:16:00,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 517 [2024-11-21 22:16:00,456 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 22:16:00,457 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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] [2024-11-21 22:16:00,463 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-21 22:16:00,657 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,SelfDestructingSolverStorable13 [2024-11-21 22:16:00,657 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 22:16:00,658 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 22:16:00,658 INFO L85 PathProgramCache]: Analyzing trace with hash -1149099589, now seen corresponding path program 1 times [2024-11-21 22:16:00,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 22:16:00,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445869083] [2024-11-21 22:16:00,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:16:00,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 22:16:00,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:16:01,415 INFO L134 CoverageAnalysis]: Checked inductivity of 705 backedges. 544 proven. 0 refuted. 0 times theorem prover too weak. 161 trivial. 0 not checked. [2024-11-21 22:16:01,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 22:16:01,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445869083] [2024-11-21 22:16:01,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1445869083] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 22:16:01,416 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-21 22:16:01,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-21 22:16:01,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190965176] [2024-11-21 22:16:01,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 22:16:01,416 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-21 22:16:01,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 22:16:01,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-21 22:16:01,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-21 22:16:01,417 INFO L87 Difference]: Start difference. First operand 180680 states and 195515 transitions. Second operand has 3 states, 3 states have (on average 119.0) internal successors, (357), 3 states have internal predecessors, (357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:16:04,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 22:16:04,836 INFO L93 Difference]: Finished difference Result 362149 states and 391828 transitions. [2024-11-21 22:16:04,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 22:16:04,836 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 119.0) internal successors, (357), 3 states have internal predecessors, (357), 0 states have call successors, (0), 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 516 [2024-11-21 22:16:04,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 22:16:05,044 INFO L225 Difference]: With dead ends: 362149 [2024-11-21 22:16:05,044 INFO L226 Difference]: Without dead ends: 182258 [2024-11-21 22:16:05,136 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-21 22:16:05,137 INFO L432 NwaCegarLoop]: 1384 mSDtfsCounter, 835 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 2483 mSolverCounterSat, 607 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 835 SdHoareTripleChecker+Valid, 1469 SdHoareTripleChecker+Invalid, 3090 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 607 IncrementalHoareTripleChecker+Valid, 2483 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2024-11-21 22:16:05,137 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [835 Valid, 1469 Invalid, 3090 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [607 Valid, 2483 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2024-11-21 22:16:05,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182258 states. [2024-11-21 22:16:06,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182258 to 180669. [2024-11-21 22:16:06,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180669 states, 180668 states have (on average 1.0637190869440079) internal successors, (192180), 180668 states have internal predecessors, (192180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:16:07,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180669 states to 180669 states and 192180 transitions. [2024-11-21 22:16:07,614 INFO L78 Accepts]: Start accepts. Automaton has 180669 states and 192180 transitions. Word has length 516 [2024-11-21 22:16:07,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 22:16:07,615 INFO L471 AbstractCegarLoop]: Abstraction has 180669 states and 192180 transitions. [2024-11-21 22:16:07,615 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 119.0) internal successors, (357), 3 states have internal predecessors, (357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:16:07,615 INFO L276 IsEmpty]: Start isEmpty. Operand 180669 states and 192180 transitions. [2024-11-21 22:16:07,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 529 [2024-11-21 22:16:07,636 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 22:16:07,636 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2024-11-21 22:16:07,636 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-21 22:16:07,636 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 22:16:07,637 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 22:16:07,637 INFO L85 PathProgramCache]: Analyzing trace with hash 582012110, now seen corresponding path program 1 times [2024-11-21 22:16:07,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 22:16:07,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874610368] [2024-11-21 22:16:07,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:16:07,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 22:16:07,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:16:09,122 INFO L134 CoverageAnalysis]: Checked inductivity of 512 backedges. 345 proven. 113 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2024-11-21 22:16:09,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 22:16:09,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874610368] [2024-11-21 22:16:09,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1874610368] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-21 22:16:09,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2071358522] [2024-11-21 22:16:09,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:16:09,123 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 22:16:09,123 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 22:16:09,124 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) [2024-11-21 22:16:09,124 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-21 22:16:09,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:16:09,243 INFO L255 TraceCheckSpWp]: Trace formula consists of 659 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-21 22:16:09,247 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-21 22:16:09,429 INFO L134 CoverageAnalysis]: Checked inductivity of 512 backedges. 399 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2024-11-21 22:16:09,430 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-21 22:16:09,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2071358522] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 22:16:09,430 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-21 22:16:09,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2024-11-21 22:16:09,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751977102] [2024-11-21 22:16:09,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 22:16:09,431 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-21 22:16:09,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 22:16:09,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-21 22:16:09,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-11-21 22:16:09,431 INFO L87 Difference]: Start difference. First operand 180669 states and 192180 transitions. Second operand has 3 states, 3 states have (on average 138.66666666666666) internal successors, (416), 3 states have internal predecessors, (416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:16:12,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 22:16:12,462 INFO L93 Difference]: Finished difference Result 355016 states and 378663 transitions. [2024-11-21 22:16:12,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 22:16:12,463 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 138.66666666666666) internal successors, (416), 3 states have internal predecessors, (416), 0 states have call successors, (0), 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 528 [2024-11-21 22:16:12,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted.