./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem17_label06.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3289d67d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/eca-rers2012/Problem17_label06.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 e9764aa77a297d88a5c4424b1d4363c7dc0ea34b016b7ff505243e4a2273d457 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-16 04:16:06,149 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-16 04:16:06,228 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-16 04:16:06,233 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-16 04:16:06,233 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-16 04:16:06,269 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-16 04:16:06,269 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-16 04:16:06,270 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-16 04:16:06,270 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-16 04:16:06,272 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-16 04:16:06,272 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-16 04:16:06,272 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-16 04:16:06,273 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-16 04:16:06,273 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-16 04:16:06,276 INFO L153 SettingsManager]: * Use SBE=true [2024-11-16 04:16:06,276 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-16 04:16:06,276 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-16 04:16:06,277 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-16 04:16:06,277 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-16 04:16:06,277 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-16 04:16:06,278 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-16 04:16:06,282 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-16 04:16:06,282 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-16 04:16:06,283 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-16 04:16:06,283 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-16 04:16:06,283 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-16 04:16:06,283 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-16 04:16:06,284 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-16 04:16:06,284 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-16 04:16:06,284 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-16 04:16:06,284 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-16 04:16:06,284 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-16 04:16:06,285 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 04:16:06,285 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-16 04:16:06,286 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-16 04:16:06,286 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-16 04:16:06,286 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-16 04:16:06,287 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-16 04:16:06,287 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-16 04:16:06,288 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-16 04:16:06,288 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-16 04:16:06,289 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-16 04:16:06,289 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e9764aa77a297d88a5c4424b1d4363c7dc0ea34b016b7ff505243e4a2273d457 [2024-11-16 04:16:06,535 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-16 04:16:06,560 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-16 04:16:06,564 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-16 04:16:06,565 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-16 04:16:06,565 INFO L274 PluginConnector]: CDTParser initialized [2024-11-16 04:16:06,567 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem17_label06.c [2024-11-16 04:16:08,022 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-16 04:16:08,382 INFO L384 CDTParser]: Found 1 translation units. [2024-11-16 04:16:08,384 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem17_label06.c [2024-11-16 04:16:08,411 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f1add6099/c2f653e1e8cf496fa2a1e668440faa96/FLAG9d2479c88 [2024-11-16 04:16:08,426 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f1add6099/c2f653e1e8cf496fa2a1e668440faa96 [2024-11-16 04:16:08,429 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-16 04:16:08,430 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-16 04:16:08,431 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-16 04:16:08,432 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-16 04:16:08,436 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-16 04:16:08,438 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 04:16:08" (1/1) ... [2024-11-16 04:16:08,439 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59ebd016 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:16:08, skipping insertion in model container [2024-11-16 04:16:08,439 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 04:16:08" (1/1) ... [2024-11-16 04:16:08,521 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-16 04:16:08,755 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem17_label06.c[4782,4795] [2024-11-16 04:16:09,306 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 04:16:09,316 INFO L200 MainTranslator]: Completed pre-run [2024-11-16 04:16:09,340 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem17_label06.c[4782,4795] [2024-11-16 04:16:09,597 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 04:16:09,618 INFO L204 MainTranslator]: Completed translation [2024-11-16 04:16:09,619 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:16:09 WrapperNode [2024-11-16 04:16:09,620 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-16 04:16:09,621 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-16 04:16:09,621 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-16 04:16:09,621 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-16 04:16:09,627 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:16:09" (1/1) ... [2024-11-16 04:16:09,683 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:16:09" (1/1) ... [2024-11-16 04:16:10,027 INFO L138 Inliner]: procedures = 15, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 2612 [2024-11-16 04:16:10,028 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-16 04:16:10,028 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-16 04:16:10,029 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-16 04:16:10,029 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-16 04:16:10,059 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:16:09" (1/1) ... [2024-11-16 04:16:10,059 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:16:09" (1/1) ... [2024-11-16 04:16:10,092 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:16:09" (1/1) ... [2024-11-16 04:16:10,301 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]. [2024-11-16 04:16:10,302 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:16:09" (1/1) ... [2024-11-16 04:16:10,302 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:16:09" (1/1) ... [2024-11-16 04:16:10,415 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:16:09" (1/1) ... [2024-11-16 04:16:10,429 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:16:09" (1/1) ... [2024-11-16 04:16:10,448 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:16:09" (1/1) ... [2024-11-16 04:16:10,461 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:16:09" (1/1) ... [2024-11-16 04:16:10,498 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-16 04:16:10,500 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-16 04:16:10,500 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-16 04:16:10,501 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-16 04:16:10,502 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:16:09" (1/1) ... [2024-11-16 04:16:10,507 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 04:16:10,518 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 04:16:10,535 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) [2024-11-16 04:16:10,537 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 [2024-11-16 04:16:10,573 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-16 04:16:10,573 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-16 04:16:10,573 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-16 04:16:10,573 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-16 04:16:10,629 INFO L256 CfgBuilder]: Building ICFG [2024-11-16 04:16:10,631 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-16 04:16:13,964 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L1653: havoc calculate_output_#t~ret7#1; [2024-11-16 04:16:14,138 INFO L? ?]: Removed 372 outVars from TransFormulas that were not future-live. [2024-11-16 04:16:14,140 INFO L307 CfgBuilder]: Performing block encoding [2024-11-16 04:16:14,177 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-16 04:16:14,181 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-16 04:16:14,182 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 04:16:14 BoogieIcfgContainer [2024-11-16 04:16:14,182 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-16 04:16:14,184 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-16 04:16:14,184 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-16 04:16:14,189 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-16 04:16:14,189 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 04:16:08" (1/3) ... [2024-11-16 04:16:14,190 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28380f0c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 04:16:14, skipping insertion in model container [2024-11-16 04:16:14,190 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:16:09" (2/3) ... [2024-11-16 04:16:14,191 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28380f0c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 04:16:14, skipping insertion in model container [2024-11-16 04:16:14,192 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 04:16:14" (3/3) ... [2024-11-16 04:16:14,194 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label06.c [2024-11-16 04:16:14,210 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-16 04:16:14,210 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-16 04:16:14,295 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-16 04:16:14,304 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;@497f438c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-16 04:16:14,304 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-16 04:16:14,311 INFO L276 IsEmpty]: Start isEmpty. Operand has 593 states, 591 states have (on average 1.8020304568527918) internal successors, (1065), 592 states have internal predecessors, (1065), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:16:14,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-11-16 04:16:14,322 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:16:14,323 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] [2024-11-16 04:16:14,323 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:16:14,329 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:16:14,330 INFO L85 PathProgramCache]: Analyzing trace with hash 275071499, now seen corresponding path program 1 times [2024-11-16 04:16:14,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:16:14,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810639174] [2024-11-16 04:16:14,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:16:14,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:16:14,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:16:14,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 04:16:14,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:16:14,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810639174] [2024-11-16 04:16:14,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1810639174] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 04:16:14,692 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 04:16:14,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-16 04:16:14,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809207194] [2024-11-16 04:16:14,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:16:14,698 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 04:16:14,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:16:14,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 04:16:14,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 04:16:14,722 INFO L87 Difference]: Start difference. First operand has 593 states, 591 states have (on average 1.8020304568527918) internal successors, (1065), 592 states have internal predecessors, (1065), 0 states have call successors, (0), 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 11.0) internal successors, (33), 2 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:16:17,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:16:17,044 INFO L93 Difference]: Finished difference Result 1648 states and 3030 transitions. [2024-11-16 04:16:17,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 04:16:17,046 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 2 states have internal predecessors, (33), 0 states have call successors, (0), 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 33 [2024-11-16 04:16:17,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:16:17,063 INFO L225 Difference]: With dead ends: 1648 [2024-11-16 04:16:17,064 INFO L226 Difference]: Without dead ends: 978 [2024-11-16 04:16:17,070 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 [2024-11-16 04:16:17,073 INFO L432 NwaCegarLoop]: 477 mSDtfsCounter, 459 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 1413 mSolverCounterSat, 372 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 459 SdHoareTripleChecker+Valid, 555 SdHoareTripleChecker+Invalid, 1785 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 372 IncrementalHoareTripleChecker+Valid, 1413 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-11-16 04:16:17,074 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [459 Valid, 555 Invalid, 1785 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [372 Valid, 1413 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-11-16 04:16:17,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 978 states. [2024-11-16 04:16:17,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 978 to 975. [2024-11-16 04:16:17,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 975 states, 974 states have (on average 1.5061601642710472) internal successors, (1467), 974 states have internal predecessors, (1467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:16:17,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 975 states to 975 states and 1467 transitions. [2024-11-16 04:16:17,158 INFO L78 Accepts]: Start accepts. Automaton has 975 states and 1467 transitions. Word has length 33 [2024-11-16 04:16:17,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:16:17,158 INFO L471 AbstractCegarLoop]: Abstraction has 975 states and 1467 transitions. [2024-11-16 04:16:17,159 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 2 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:16:17,159 INFO L276 IsEmpty]: Start isEmpty. Operand 975 states and 1467 transitions. [2024-11-16 04:16:17,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-11-16 04:16:17,165 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:16:17,165 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 04:16:17,165 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-16 04:16:17,169 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:16:17,170 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:16:17,170 INFO L85 PathProgramCache]: Analyzing trace with hash 500733069, now seen corresponding path program 1 times [2024-11-16 04:16:17,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:16:17,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015703359] [2024-11-16 04:16:17,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:16:17,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:16:17,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:16:17,522 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 04:16:17,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:16:17,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015703359] [2024-11-16 04:16:17,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1015703359] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 04:16:17,523 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 04:16:17,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 04:16:17,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625092154] [2024-11-16 04:16:17,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:16:17,526 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 04:16:17,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:16:17,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 04:16:17,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 04:16:17,531 INFO L87 Difference]: Start difference. First operand 975 states and 1467 transitions. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:16:19,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:16:19,684 INFO L93 Difference]: Finished difference Result 2822 states and 4250 transitions. [2024-11-16 04:16:19,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 04:16:19,685 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 104 [2024-11-16 04:16:19,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:16:19,693 INFO L225 Difference]: With dead ends: 2822 [2024-11-16 04:16:19,693 INFO L226 Difference]: Without dead ends: 1849 [2024-11-16 04:16:19,695 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 [2024-11-16 04:16:19,696 INFO L432 NwaCegarLoop]: 856 mSDtfsCounter, 460 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 1283 mSolverCounterSat, 414 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 460 SdHoareTripleChecker+Valid, 926 SdHoareTripleChecker+Invalid, 1697 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 414 IncrementalHoareTripleChecker+Valid, 1283 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-11-16 04:16:19,697 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [460 Valid, 926 Invalid, 1697 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [414 Valid, 1283 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-11-16 04:16:19,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1849 states. [2024-11-16 04:16:19,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1849 to 1847. [2024-11-16 04:16:19,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1847 states, 1846 states have (on average 1.3591549295774648) internal successors, (2509), 1846 states have internal predecessors, (2509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:16:19,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1847 states to 1847 states and 2509 transitions. [2024-11-16 04:16:19,740 INFO L78 Accepts]: Start accepts. Automaton has 1847 states and 2509 transitions. Word has length 104 [2024-11-16 04:16:19,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:16:19,742 INFO L471 AbstractCegarLoop]: Abstraction has 1847 states and 2509 transitions. [2024-11-16 04:16:19,743 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:16:19,743 INFO L276 IsEmpty]: Start isEmpty. Operand 1847 states and 2509 transitions. [2024-11-16 04:16:19,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2024-11-16 04:16:19,751 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:16:19,752 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 04:16:19,752 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-16 04:16:19,752 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:16:19,752 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:16:19,756 INFO L85 PathProgramCache]: Analyzing trace with hash -1603601864, now seen corresponding path program 1 times [2024-11-16 04:16:19,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:16:19,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514575206] [2024-11-16 04:16:19,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:16:19,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:16:19,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:16:19,977 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 04:16:19,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:16:19,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514575206] [2024-11-16 04:16:19,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [514575206] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 04:16:19,979 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 04:16:19,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-16 04:16:19,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595113117] [2024-11-16 04:16:19,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:16:19,981 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 04:16:19,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:16:19,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 04:16:19,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 04:16:19,983 INFO L87 Difference]: Start difference. First operand 1847 states and 2509 transitions. Second operand has 3 states, 3 states have (on average 42.0) internal successors, (126), 2 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:16:22,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:16:22,037 INFO L93 Difference]: Finished difference Result 5409 states and 7340 transitions. [2024-11-16 04:16:22,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 04:16:22,037 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 2 states have internal predecessors, (126), 0 states have call successors, (0), 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 126 [2024-11-16 04:16:22,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:16:22,046 INFO L225 Difference]: With dead ends: 5409 [2024-11-16 04:16:22,047 INFO L226 Difference]: Without dead ends: 2708 [2024-11-16 04:16:22,049 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 [2024-11-16 04:16:22,050 INFO L432 NwaCegarLoop]: 517 mSDtfsCounter, 369 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 1081 mSolverCounterSat, 548 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 369 SdHoareTripleChecker+Valid, 593 SdHoareTripleChecker+Invalid, 1629 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 548 IncrementalHoareTripleChecker+Valid, 1081 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-11-16 04:16:22,051 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [369 Valid, 593 Invalid, 1629 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [548 Valid, 1081 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-11-16 04:16:22,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2708 states. [2024-11-16 04:16:22,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2708 to 2708. [2024-11-16 04:16:22,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2708 states, 2707 states have (on average 1.1913557443664573) internal successors, (3225), 2707 states have internal predecessors, (3225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:16:22,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2708 states to 2708 states and 3225 transitions. [2024-11-16 04:16:22,096 INFO L78 Accepts]: Start accepts. Automaton has 2708 states and 3225 transitions. Word has length 126 [2024-11-16 04:16:22,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:16:22,097 INFO L471 AbstractCegarLoop]: Abstraction has 2708 states and 3225 transitions. [2024-11-16 04:16:22,097 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 2 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:16:22,097 INFO L276 IsEmpty]: Start isEmpty. Operand 2708 states and 3225 transitions. [2024-11-16 04:16:22,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2024-11-16 04:16:22,103 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:16:22,103 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-16 04:16:22,103 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-16 04:16:22,103 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:16:22,104 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:16:22,104 INFO L85 PathProgramCache]: Analyzing trace with hash 725404546, now seen corresponding path program 1 times [2024-11-16 04:16:22,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:16:22,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205038594] [2024-11-16 04:16:22,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:16:22,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:16:22,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:16:22,426 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 128 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 04:16:22,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:16:22,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [205038594] [2024-11-16 04:16:22,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [205038594] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 04:16:22,427 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 04:16:22,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 04:16:22,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500401612] [2024-11-16 04:16:22,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:16:22,429 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 04:16:22,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:16:22,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 04:16:22,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 04:16:22,431 INFO L87 Difference]: Start difference. First operand 2708 states and 3225 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) [2024-11-16 04:16:24,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:16:24,049 INFO L93 Difference]: Finished difference Result 7126 states and 8616 transitions. [2024-11-16 04:16:24,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 04:16:24,050 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 187 [2024-11-16 04:16:24,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:16:24,064 INFO L225 Difference]: With dead ends: 7126 [2024-11-16 04:16:24,064 INFO L226 Difference]: Without dead ends: 4420 [2024-11-16 04:16:24,068 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 [2024-11-16 04:16:24,071 INFO L432 NwaCegarLoop]: 729 mSDtfsCounter, 496 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 1136 mSolverCounterSat, 306 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 496 SdHoareTripleChecker+Valid, 789 SdHoareTripleChecker+Invalid, 1442 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 306 IncrementalHoareTripleChecker+Valid, 1136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-16 04:16:24,074 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [496 Valid, 789 Invalid, 1442 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [306 Valid, 1136 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-16 04:16:24,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4420 states. [2024-11-16 04:16:24,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4420 to 4420. [2024-11-16 04:16:24,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4420 states, 4419 states have (on average 1.170174247567323) internal successors, (5171), 4419 states have internal predecessors, (5171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:16:24,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4420 states to 4420 states and 5171 transitions. [2024-11-16 04:16:24,186 INFO L78 Accepts]: Start accepts. Automaton has 4420 states and 5171 transitions. Word has length 187 [2024-11-16 04:16:24,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:16:24,187 INFO L471 AbstractCegarLoop]: Abstraction has 4420 states and 5171 transitions. [2024-11-16 04:16:24,188 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) [2024-11-16 04:16:24,188 INFO L276 IsEmpty]: Start isEmpty. Operand 4420 states and 5171 transitions. [2024-11-16 04:16:24,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2024-11-16 04:16:24,191 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:16:24,191 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-16 04:16:24,192 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-16 04:16:24,192 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:16:24,192 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:16:24,193 INFO L85 PathProgramCache]: Analyzing trace with hash 659555527, now seen corresponding path program 1 times [2024-11-16 04:16:24,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:16:24,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [604765470] [2024-11-16 04:16:24,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:16:24,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:16:24,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:16:24,377 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2024-11-16 04:16:24,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:16:24,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [604765470] [2024-11-16 04:16:24,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [604765470] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 04:16:24,379 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 04:16:24,379 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 04:16:24,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827865172] [2024-11-16 04:16:24,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:16:24,381 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 04:16:24,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:16:24,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 04:16:24,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 04:16:24,382 INFO L87 Difference]: Start difference. First operand 4420 states and 5171 transitions. Second operand has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:16:25,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:16:25,987 INFO L93 Difference]: Finished difference Result 10963 states and 12997 transitions. [2024-11-16 04:16:25,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 04:16:25,988 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 189 [2024-11-16 04:16:25,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:16:26,008 INFO L225 Difference]: With dead ends: 10963 [2024-11-16 04:16:26,008 INFO L226 Difference]: Without dead ends: 6544 [2024-11-16 04:16:26,014 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 [2024-11-16 04:16:26,015 INFO L432 NwaCegarLoop]: 385 mSDtfsCounter, 420 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 1215 mSolverCounterSat, 274 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 420 SdHoareTripleChecker+Valid, 449 SdHoareTripleChecker+Invalid, 1489 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 274 IncrementalHoareTripleChecker+Valid, 1215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-16 04:16:26,015 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [420 Valid, 449 Invalid, 1489 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [274 Valid, 1215 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-16 04:16:26,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6544 states. [2024-11-16 04:16:26,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6544 to 4393. [2024-11-16 04:16:26,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4393 states, 4392 states have (on average 1.1680327868852458) internal successors, (5130), 4392 states have internal predecessors, (5130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:16:26,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4393 states to 4393 states and 5130 transitions. [2024-11-16 04:16:26,093 INFO L78 Accepts]: Start accepts. Automaton has 4393 states and 5130 transitions. Word has length 189 [2024-11-16 04:16:26,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:16:26,094 INFO L471 AbstractCegarLoop]: Abstraction has 4393 states and 5130 transitions. [2024-11-16 04:16:26,095 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:16:26,095 INFO L276 IsEmpty]: Start isEmpty. Operand 4393 states and 5130 transitions. [2024-11-16 04:16:26,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2024-11-16 04:16:26,098 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:16:26,098 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-16 04:16:26,098 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-16 04:16:26,098 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:16:26,099 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:16:26,099 INFO L85 PathProgramCache]: Analyzing trace with hash 1124007103, now seen corresponding path program 1 times [2024-11-16 04:16:26,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:16:26,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565138504] [2024-11-16 04:16:26,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:16:26,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:16:26,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:16:26,486 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2024-11-16 04:16:26,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:16:26,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1565138504] [2024-11-16 04:16:26,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1565138504] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 04:16:26,487 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 04:16:26,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 04:16:26,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793862070] [2024-11-16 04:16:26,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:16:26,488 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 04:16:26,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:16:26,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 04:16:26,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 04:16:26,488 INFO L87 Difference]: Start difference. First operand 4393 states and 5130 transitions. Second operand has 3 states, 3 states have (on average 57.666666666666664) internal successors, (173), 3 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:16:28,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:16:28,123 INFO L93 Difference]: Finished difference Result 10937 states and 12951 transitions. [2024-11-16 04:16:28,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 04:16:28,124 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 57.666666666666664) internal successors, (173), 3 states have internal predecessors, (173), 0 states have call successors, (0), 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 255 [2024-11-16 04:16:28,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:16:28,145 INFO L225 Difference]: With dead ends: 10937 [2024-11-16 04:16:28,146 INFO L226 Difference]: Without dead ends: 6546 [2024-11-16 04:16:28,152 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 [2024-11-16 04:16:28,154 INFO L432 NwaCegarLoop]: 370 mSDtfsCounter, 474 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 1294 mSolverCounterSat, 262 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 474 SdHoareTripleChecker+Valid, 418 SdHoareTripleChecker+Invalid, 1556 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 262 IncrementalHoareTripleChecker+Valid, 1294 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-16 04:16:28,154 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [474 Valid, 418 Invalid, 1556 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [262 Valid, 1294 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-16 04:16:28,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6546 states. [2024-11-16 04:16:28,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6546 to 6111. [2024-11-16 04:16:28,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6111 states, 6110 states have (on average 1.1880523731587562) internal successors, (7259), 6110 states have internal predecessors, (7259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:16:28,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6111 states to 6111 states and 7259 transitions. [2024-11-16 04:16:28,260 INFO L78 Accepts]: Start accepts. Automaton has 6111 states and 7259 transitions. Word has length 255 [2024-11-16 04:16:28,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:16:28,261 INFO L471 AbstractCegarLoop]: Abstraction has 6111 states and 7259 transitions. [2024-11-16 04:16:28,261 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.666666666666664) internal successors, (173), 3 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:16:28,261 INFO L276 IsEmpty]: Start isEmpty. Operand 6111 states and 7259 transitions. [2024-11-16 04:16:28,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2024-11-16 04:16:28,264 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:16:28,264 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 04:16:28,265 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-16 04:16:28,265 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:16:28,265 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:16:28,266 INFO L85 PathProgramCache]: Analyzing trace with hash -2121227964, now seen corresponding path program 1 times [2024-11-16 04:16:28,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:16:28,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942595303] [2024-11-16 04:16:28,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:16:28,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:16:28,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:16:28,562 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 224 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2024-11-16 04:16:28,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:16:28,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [942595303] [2024-11-16 04:16:28,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [942595303] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 04:16:28,563 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 04:16:28,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 04:16:28,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688711305] [2024-11-16 04:16:28,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:16:28,564 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 04:16:28,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:16:28,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 04:16:28,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 04:16:28,564 INFO L87 Difference]: Start difference. First operand 6111 states and 7259 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) [2024-11-16 04:16:30,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:16:30,324 INFO L93 Difference]: Finished difference Result 15660 states and 18770 transitions. [2024-11-16 04:16:30,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 04:16:30,325 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 268 [2024-11-16 04:16:30,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:16:30,351 INFO L225 Difference]: With dead ends: 15660 [2024-11-16 04:16:30,351 INFO L226 Difference]: Without dead ends: 9113 [2024-11-16 04:16:30,360 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 [2024-11-16 04:16:30,361 INFO L432 NwaCegarLoop]: 587 mSDtfsCounter, 495 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 1238 mSolverCounterSat, 350 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 495 SdHoareTripleChecker+Valid, 630 SdHoareTripleChecker+Invalid, 1588 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 350 IncrementalHoareTripleChecker+Valid, 1238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-16 04:16:30,361 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [495 Valid, 630 Invalid, 1588 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [350 Valid, 1238 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-16 04:16:30,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9113 states. [2024-11-16 04:16:30,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9113 to 8681. [2024-11-16 04:16:30,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8681 states, 8680 states have (on average 1.1805299539170506) internal successors, (10247), 8680 states have internal predecessors, (10247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:16:30,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8681 states to 8681 states and 10247 transitions. [2024-11-16 04:16:30,558 INFO L78 Accepts]: Start accepts. Automaton has 8681 states and 10247 transitions. Word has length 268 [2024-11-16 04:16:30,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:16:30,558 INFO L471 AbstractCegarLoop]: Abstraction has 8681 states and 10247 transitions. [2024-11-16 04:16:30,559 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) [2024-11-16 04:16:30,559 INFO L276 IsEmpty]: Start isEmpty. Operand 8681 states and 10247 transitions. [2024-11-16 04:16:30,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2024-11-16 04:16:30,564 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:16:30,564 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 04:16:30,564 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-16 04:16:30,564 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:16:30,565 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:16:30,566 INFO L85 PathProgramCache]: Analyzing trace with hash -1340304403, now seen corresponding path program 1 times [2024-11-16 04:16:30,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:16:30,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566462171] [2024-11-16 04:16:30,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:16:30,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:16:30,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:16:30,847 INFO L134 CoverageAnalysis]: Checked inductivity of 316 backedges. 234 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2024-11-16 04:16:30,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:16:30,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566462171] [2024-11-16 04:16:30,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [566462171] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 04:16:30,848 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 04:16:30,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 04:16:30,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182854542] [2024-11-16 04:16:30,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:16:30,849 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 04:16:30,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:16:30,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 04:16:30,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 04:16:30,850 INFO L87 Difference]: Start difference. First operand 8681 states and 10247 transitions. Second operand has 3 states, 3 states have (on average 64.0) internal successors, (192), 3 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:16:32,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:16:32,453 INFO L93 Difference]: Finished difference Result 20768 states and 24660 transitions. [2024-11-16 04:16:32,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 04:16:32,453 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 64.0) internal successors, (192), 3 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 273 [2024-11-16 04:16:32,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:16:32,473 INFO L225 Difference]: With dead ends: 20768 [2024-11-16 04:16:32,473 INFO L226 Difference]: Without dead ends: 12089 [2024-11-16 04:16:32,484 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 [2024-11-16 04:16:32,485 INFO L432 NwaCegarLoop]: 763 mSDtfsCounter, 380 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 1178 mSolverCounterSat, 239 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 380 SdHoareTripleChecker+Valid, 830 SdHoareTripleChecker+Invalid, 1417 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 239 IncrementalHoareTripleChecker+Valid, 1178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-16 04:16:32,485 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [380 Valid, 830 Invalid, 1417 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [239 Valid, 1178 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-16 04:16:32,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12089 states. [2024-11-16 04:16:32,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12089 to 11237. [2024-11-16 04:16:32,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11237 states, 11236 states have (on average 1.157440370238519) internal successors, (13005), 11236 states have internal predecessors, (13005), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:16:32,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11237 states to 11237 states and 13005 transitions. [2024-11-16 04:16:32,643 INFO L78 Accepts]: Start accepts. Automaton has 11237 states and 13005 transitions. Word has length 273 [2024-11-16 04:16:32,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:16:32,644 INFO L471 AbstractCegarLoop]: Abstraction has 11237 states and 13005 transitions. [2024-11-16 04:16:32,644 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 64.0) internal successors, (192), 3 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:16:32,645 INFO L276 IsEmpty]: Start isEmpty. Operand 11237 states and 13005 transitions. [2024-11-16 04:16:32,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 297 [2024-11-16 04:16:32,649 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:16:32,649 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-16 04:16:32,649 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-16 04:16:32,649 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:16:32,650 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:16:32,650 INFO L85 PathProgramCache]: Analyzing trace with hash -1269985190, now seen corresponding path program 1 times [2024-11-16 04:16:32,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:16:32,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [207038854] [2024-11-16 04:16:32,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:16:32,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:16:32,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:16:33,160 INFO L134 CoverageAnalysis]: Checked inductivity of 317 backedges. 234 proven. 0 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2024-11-16 04:16:33,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:16:33,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [207038854] [2024-11-16 04:16:33,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [207038854] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 04:16:33,161 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 04:16:33,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-16 04:16:33,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960100063] [2024-11-16 04:16:33,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:16:33,162 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 04:16:33,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:16:33,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 04:16:33,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-16 04:16:33,164 INFO L87 Difference]: Start difference. First operand 11237 states and 13005 transitions. Second operand has 4 states, 4 states have (on average 53.5) internal successors, (214), 4 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:16:36,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:16:36,223 INFO L93 Difference]: Finished difference Result 40466 states and 46668 transitions. [2024-11-16 04:16:36,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-16 04:16:36,223 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 53.5) internal successors, (214), 4 states have internal predecessors, (214), 0 states have call successors, (0), 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 296 [2024-11-16 04:16:36,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:16:36,265 INFO L225 Difference]: With dead ends: 40466 [2024-11-16 04:16:36,265 INFO L226 Difference]: Without dead ends: 27514 [2024-11-16 04:16:36,284 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-16 04:16:36,285 INFO L432 NwaCegarLoop]: 207 mSDtfsCounter, 876 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 2777 mSolverCounterSat, 433 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 876 SdHoareTripleChecker+Valid, 333 SdHoareTripleChecker+Invalid, 3210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 433 IncrementalHoareTripleChecker+Valid, 2777 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2024-11-16 04:16:36,285 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [876 Valid, 333 Invalid, 3210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [433 Valid, 2777 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2024-11-16 04:16:36,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27514 states. [2024-11-16 04:16:36,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27514 to 27044. [2024-11-16 04:16:36,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27044 states, 27043 states have (on average 1.1287209259327737) internal successors, (30524), 27043 states have internal predecessors, (30524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:16:36,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27044 states to 27044 states and 30524 transitions. [2024-11-16 04:16:36,734 INFO L78 Accepts]: Start accepts. Automaton has 27044 states and 30524 transitions. Word has length 296 [2024-11-16 04:16:36,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:16:36,734 INFO L471 AbstractCegarLoop]: Abstraction has 27044 states and 30524 transitions. [2024-11-16 04:16:36,734 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 53.5) internal successors, (214), 4 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:16:36,735 INFO L276 IsEmpty]: Start isEmpty. Operand 27044 states and 30524 transitions. [2024-11-16 04:16:36,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 378 [2024-11-16 04:16:36,743 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:16:36,743 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-16 04:16:36,744 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-16 04:16:36,744 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:16:36,747 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:16:36,748 INFO L85 PathProgramCache]: Analyzing trace with hash -1085542911, now seen corresponding path program 1 times [2024-11-16 04:16:36,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:16:36,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941109421] [2024-11-16 04:16:36,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:16:36,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:16:36,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:16:37,240 INFO L134 CoverageAnalysis]: Checked inductivity of 317 backedges. 204 proven. 83 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-16 04:16:37,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:16:37,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941109421] [2024-11-16 04:16:37,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [941109421] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 04:16:37,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1879274135] [2024-11-16 04:16:37,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:16:37,241 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 04:16:37,241 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 04:16:37,243 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) [2024-11-16 04:16:37,245 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-16 04:16:37,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:16:37,402 INFO L255 TraceCheckSpWp]: Trace formula consists of 503 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-16 04:16:37,414 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 04:16:37,996 INFO L134 CoverageAnalysis]: Checked inductivity of 317 backedges. 162 proven. 155 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 04:16:37,997 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 04:16:38,495 INFO L134 CoverageAnalysis]: Checked inductivity of 317 backedges. 317 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 04:16:38,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1879274135] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-16 04:16:38,495 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-16 04:16:38,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [3, 4] total 7 [2024-11-16 04:16:38,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559375354] [2024-11-16 04:16:38,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:16:38,497 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-16 04:16:38,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:16:38,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-16 04:16:38,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2024-11-16 04:16:38,498 INFO L87 Difference]: Start difference. First operand 27044 states and 30524 transitions. Second operand has 5 states, 5 states have (on average 75.4) internal successors, (377), 4 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:16:41,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:16:41,720 INFO L93 Difference]: Finished difference Result 75849 states and 85424 transitions. [2024-11-16 04:16:41,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-16 04:16:41,720 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 75.4) internal successors, (377), 4 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 377 [2024-11-16 04:16:41,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:16:41,796 INFO L225 Difference]: With dead ends: 75849 [2024-11-16 04:16:41,796 INFO L226 Difference]: Without dead ends: 47953 [2024-11-16 04:16:41,829 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 755 GetRequests, 749 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2024-11-16 04:16:41,830 INFO L432 NwaCegarLoop]: 76 mSDtfsCounter, 1119 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 3145 mSolverCounterSat, 482 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1119 SdHoareTripleChecker+Valid, 198 SdHoareTripleChecker+Invalid, 3627 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 482 IncrementalHoareTripleChecker+Valid, 3145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2024-11-16 04:16:41,831 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1119 Valid, 198 Invalid, 3627 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [482 Valid, 3145 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2024-11-16 04:16:41,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47953 states. [2024-11-16 04:16:42,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47953 to 46232. [2024-11-16 04:16:42,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46232 states, 46231 states have (on average 1.1017715385780105) internal successors, (50936), 46231 states have internal predecessors, (50936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:16:42,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46232 states to 46232 states and 50936 transitions. [2024-11-16 04:16:42,632 INFO L78 Accepts]: Start accepts. Automaton has 46232 states and 50936 transitions. Word has length 377 [2024-11-16 04:16:42,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:16:42,633 INFO L471 AbstractCegarLoop]: Abstraction has 46232 states and 50936 transitions. [2024-11-16 04:16:42,633 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 75.4) internal successors, (377), 4 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:16:42,634 INFO L276 IsEmpty]: Start isEmpty. Operand 46232 states and 50936 transitions. [2024-11-16 04:16:42,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 384 [2024-11-16 04:16:42,648 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:16:42,649 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 04:16:42,668 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-16 04:16:42,850 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 [2024-11-16 04:16:42,851 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:16:42,851 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:16:42,851 INFO L85 PathProgramCache]: Analyzing trace with hash -1047367468, now seen corresponding path program 1 times [2024-11-16 04:16:42,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:16:42,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913077780] [2024-11-16 04:16:42,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:16:42,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:16:42,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:16:43,173 INFO L134 CoverageAnalysis]: Checked inductivity of 615 backedges. 503 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-11-16 04:16:43,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:16:43,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913077780] [2024-11-16 04:16:43,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1913077780] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 04:16:43,174 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 04:16:43,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 04:16:43,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578557123] [2024-11-16 04:16:43,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:16:43,175 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 04:16:43,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:16:43,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 04:16:43,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 04:16:43,176 INFO L87 Difference]: Start difference. First operand 46232 states and 50936 transitions. Second operand has 3 states, 3 states have (on average 91.0) internal successors, (273), 3 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:16:44,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:16:44,975 INFO L93 Difference]: Finished difference Result 109115 states and 120494 transitions. [2024-11-16 04:16:44,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 04:16:44,975 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 91.0) internal successors, (273), 3 states have internal predecessors, (273), 0 states have call successors, (0), 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 383 [2024-11-16 04:16:44,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:16:45,069 INFO L225 Difference]: With dead ends: 109115 [2024-11-16 04:16:45,069 INFO L226 Difference]: Without dead ends: 62456 [2024-11-16 04:16:45,098 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 [2024-11-16 04:16:45,099 INFO L432 NwaCegarLoop]: 288 mSDtfsCounter, 395 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 1187 mSolverCounterSat, 194 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 395 SdHoareTripleChecker+Valid, 339 SdHoareTripleChecker+Invalid, 1381 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 194 IncrementalHoareTripleChecker+Valid, 1187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-16 04:16:45,099 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [395 Valid, 339 Invalid, 1381 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [194 Valid, 1187 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-16 04:16:45,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62456 states. [2024-11-16 04:16:45,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62456 to 61580. [2024-11-16 04:16:45,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61580 states, 61579 states have (on average 1.0886341122785366) internal successors, (67037), 61579 states have internal predecessors, (67037), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:16:46,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61580 states to 61580 states and 67037 transitions. [2024-11-16 04:16:46,273 INFO L78 Accepts]: Start accepts. Automaton has 61580 states and 67037 transitions. Word has length 383 [2024-11-16 04:16:46,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:16:46,278 INFO L471 AbstractCegarLoop]: Abstraction has 61580 states and 67037 transitions. [2024-11-16 04:16:46,279 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 91.0) internal successors, (273), 3 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:16:46,279 INFO L276 IsEmpty]: Start isEmpty. Operand 61580 states and 67037 transitions. [2024-11-16 04:16:46,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 418 [2024-11-16 04:16:46,321 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:16:46,321 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 04:16:46,321 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-16 04:16:46,322 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:16:46,322 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:16:46,322 INFO L85 PathProgramCache]: Analyzing trace with hash -1348930675, now seen corresponding path program 1 times [2024-11-16 04:16:46,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:16:46,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334879411] [2024-11-16 04:16:46,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:16:46,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:16:46,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:16:47,464 INFO L134 CoverageAnalysis]: Checked inductivity of 609 backedges. 307 proven. 30 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2024-11-16 04:16:47,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:16:47,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334879411] [2024-11-16 04:16:47,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1334879411] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 04:16:47,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [179907689] [2024-11-16 04:16:47,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:16:47,466 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 04:16:47,466 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 04:16:47,468 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) [2024-11-16 04:16:47,469 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-16 04:16:47,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:16:47,664 INFO L255 TraceCheckSpWp]: Trace formula consists of 564 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-16 04:16:47,670 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 04:16:48,102 INFO L134 CoverageAnalysis]: Checked inductivity of 609 backedges. 393 proven. 83 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2024-11-16 04:16:48,102 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 04:16:49,036 INFO L134 CoverageAnalysis]: Checked inductivity of 609 backedges. 393 proven. 83 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2024-11-16 04:16:49,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [179907689] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 04:16:49,037 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 04:16:49,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 3, 3] total 9 [2024-11-16 04:16:49,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646325878] [2024-11-16 04:16:49,037 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 04:16:49,039 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-16 04:16:49,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:16:49,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-16 04:16:49,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-11-16 04:16:49,040 INFO L87 Difference]: Start difference. First operand 61580 states and 67037 transitions. Second operand has 9 states, 9 states have (on average 81.66666666666667) internal successors, (735), 9 states have internal predecessors, (735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:16:57,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:16:57,760 INFO L93 Difference]: Finished difference Result 168862 states and 183625 transitions. [2024-11-16 04:16:57,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-16 04:16:57,761 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 81.66666666666667) internal successors, (735), 9 states have internal predecessors, (735), 0 states have call successors, (0), 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 417 [2024-11-16 04:16:57,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:16:57,877 INFO L225 Difference]: With dead ends: 168862 [2024-11-16 04:16:57,877 INFO L226 Difference]: Without dead ends: 105578 [2024-11-16 04:16:58,060 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 854 GetRequests, 838 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=100, Invalid=206, Unknown=0, NotChecked=0, Total=306 [2024-11-16 04:16:58,065 INFO L432 NwaCegarLoop]: 69 mSDtfsCounter, 7851 mSDsluCounter, 289 mSDsCounter, 0 mSdLazyCounter, 9669 mSolverCounterSat, 1643 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7851 SdHoareTripleChecker+Valid, 358 SdHoareTripleChecker+Invalid, 11312 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1643 IncrementalHoareTripleChecker+Valid, 9669 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.9s IncrementalHoareTripleChecker+Time [2024-11-16 04:16:58,066 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7851 Valid, 358 Invalid, 11312 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1643 Valid, 9669 Invalid, 0 Unknown, 0 Unchecked, 7.9s Time] [2024-11-16 04:16:58,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105578 states. [2024-11-16 04:16:59,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105578 to 85849. [2024-11-16 04:16:59,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85849 states, 85848 states have (on average 1.0751211443481503) internal successors, (92297), 85848 states have internal predecessors, (92297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:16:59,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85849 states to 85849 states and 92297 transitions. [2024-11-16 04:16:59,337 INFO L78 Accepts]: Start accepts. Automaton has 85849 states and 92297 transitions. Word has length 417 [2024-11-16 04:16:59,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:16:59,337 INFO L471 AbstractCegarLoop]: Abstraction has 85849 states and 92297 transitions. [2024-11-16 04:16:59,337 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 81.66666666666667) internal successors, (735), 9 states have internal predecessors, (735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:16:59,337 INFO L276 IsEmpty]: Start isEmpty. Operand 85849 states and 92297 transitions. [2024-11-16 04:16:59,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 503 [2024-11-16 04:16:59,351 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:16:59,351 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 04:16:59,369 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-16 04:16:59,552 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-16 04:16:59,552 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:16:59,553 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:16:59,553 INFO L85 PathProgramCache]: Analyzing trace with hash -141936491, now seen corresponding path program 1 times [2024-11-16 04:16:59,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:16:59,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676087413] [2024-11-16 04:16:59,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:16:59,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:16:59,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:17:00,208 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 89 proven. 0 refuted. 0 times theorem prover too weak. 346 trivial. 0 not checked. [2024-11-16 04:17:00,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:17:00,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1676087413] [2024-11-16 04:17:00,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1676087413] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 04:17:00,209 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 04:17:00,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 04:17:00,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854900607] [2024-11-16 04:17:00,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:17:00,210 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 04:17:00,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:17:00,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 04:17:00,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 04:17:00,212 INFO L87 Difference]: Start difference. First operand 85849 states and 92297 transitions. Second operand has 3 states, 3 states have (on average 80.33333333333333) internal successors, (241), 3 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:17:01,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:17:01,867 INFO L93 Difference]: Finished difference Result 169987 states and 182755 transitions. [2024-11-16 04:17:01,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 04:17:01,868 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 80.33333333333333) internal successors, (241), 3 states have internal predecessors, (241), 0 states have call successors, (0), 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 502 [2024-11-16 04:17:01,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:17:01,953 INFO L225 Difference]: With dead ends: 169987 [2024-11-16 04:17:01,953 INFO L226 Difference]: Without dead ends: 84140 [2024-11-16 04:17:01,989 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 [2024-11-16 04:17:01,990 INFO L432 NwaCegarLoop]: 632 mSDtfsCounter, 451 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 1131 mSolverCounterSat, 117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 451 SdHoareTripleChecker+Valid, 690 SdHoareTripleChecker+Invalid, 1248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 117 IncrementalHoareTripleChecker+Valid, 1131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-16 04:17:01,990 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [451 Valid, 690 Invalid, 1248 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [117 Valid, 1131 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-16 04:17:02,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84140 states. [2024-11-16 04:17:02,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84140 to 84138. [2024-11-16 04:17:02,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84138 states, 84137 states have (on average 1.0620060140009746) internal successors, (89354), 84137 states have internal predecessors, (89354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:17:02,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84138 states to 84138 states and 89354 transitions. [2024-11-16 04:17:02,959 INFO L78 Accepts]: Start accepts. Automaton has 84138 states and 89354 transitions. Word has length 502 [2024-11-16 04:17:02,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:17:02,960 INFO L471 AbstractCegarLoop]: Abstraction has 84138 states and 89354 transitions. [2024-11-16 04:17:02,960 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 80.33333333333333) internal successors, (241), 3 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:17:02,960 INFO L276 IsEmpty]: Start isEmpty. Operand 84138 states and 89354 transitions. [2024-11-16 04:17:02,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 582 [2024-11-16 04:17:02,982 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:17:02,982 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 04:17:02,983 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-16 04:17:02,983 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:17:02,983 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:17:02,983 INFO L85 PathProgramCache]: Analyzing trace with hash -2040498546, now seen corresponding path program 1 times [2024-11-16 04:17:02,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:17:02,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434506604] [2024-11-16 04:17:02,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:17:02,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:17:03,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:17:03,547 INFO L134 CoverageAnalysis]: Checked inductivity of 957 backedges. 592 proven. 0 refuted. 0 times theorem prover too weak. 365 trivial. 0 not checked. [2024-11-16 04:17:03,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:17:03,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434506604] [2024-11-16 04:17:03,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [434506604] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 04:17:03,548 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 04:17:03,548 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-16 04:17:03,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055002881] [2024-11-16 04:17:03,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:17:03,550 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 04:17:03,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:17:03,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 04:17:03,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 04:17:03,551 INFO L87 Difference]: Start difference. First operand 84138 states and 89354 transitions. Second operand has 3 states, 3 states have (on average 108.0) internal successors, (324), 2 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:17:04,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:17:04,625 INFO L93 Difference]: Finished difference Result 163574 states and 173746 transitions. [2024-11-16 04:17:04,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 04:17:04,626 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 108.0) internal successors, (324), 2 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 581 [2024-11-16 04:17:04,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:17:04,709 INFO L225 Difference]: With dead ends: 163574 [2024-11-16 04:17:04,709 INFO L226 Difference]: Without dead ends: 79437 [2024-11-16 04:17:04,753 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 [2024-11-16 04:17:04,754 INFO L432 NwaCegarLoop]: 86 mSDtfsCounter, 584 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 629 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 584 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 635 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 629 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-16 04:17:04,754 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [584 Valid, 86 Invalid, 635 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 629 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-16 04:17:04,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79437 states. [2024-11-16 04:17:05,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79437 to 79430. [2024-11-16 04:17:05,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79430 states, 79429 states have (on average 1.0619672915433909) internal successors, (84351), 79429 states have internal predecessors, (84351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:17:06,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79430 states to 79430 states and 84351 transitions. [2024-11-16 04:17:06,022 INFO L78 Accepts]: Start accepts. Automaton has 79430 states and 84351 transitions. Word has length 581 [2024-11-16 04:17:06,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:17:06,023 INFO L471 AbstractCegarLoop]: Abstraction has 79430 states and 84351 transitions. [2024-11-16 04:17:06,023 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 108.0) internal successors, (324), 2 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:17:06,023 INFO L276 IsEmpty]: Start isEmpty. Operand 79430 states and 84351 transitions. [2024-11-16 04:17:06,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 591 [2024-11-16 04:17:06,037 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:17:06,038 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 04:17:06,038 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-16 04:17:06,038 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:17:06,038 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:17:06,038 INFO L85 PathProgramCache]: Analyzing trace with hash 40401399, now seen corresponding path program 1 times [2024-11-16 04:17:06,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:17:06,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1822521058] [2024-11-16 04:17:06,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:17:06,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:17:06,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:17:07,307 INFO L134 CoverageAnalysis]: Checked inductivity of 696 backedges. 359 proven. 262 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2024-11-16 04:17:07,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:17:07,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1822521058] [2024-11-16 04:17:07,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1822521058] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 04:17:07,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1931728747] [2024-11-16 04:17:07,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:17:07,308 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 04:17:07,308 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 04:17:07,310 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) [2024-11-16 04:17:07,312 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-16 04:17:07,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:17:07,481 INFO L255 TraceCheckSpWp]: Trace formula consists of 739 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-16 04:17:07,486 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 04:17:07,864 INFO L134 CoverageAnalysis]: Checked inductivity of 696 backedges. 622 proven. 0 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2024-11-16 04:17:07,864 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 04:17:07,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1931728747] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 04:17:07,865 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 04:17:07,865 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2024-11-16 04:17:07,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658974535] [2024-11-16 04:17:07,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:17:07,866 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 04:17:07,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:17:07,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 04:17:07,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-16 04:17:07,867 INFO L87 Difference]: Start difference. First operand 79430 states and 84351 transitions. Second operand has 4 states, 4 states have (on average 129.25) internal successors, (517), 4 states have internal predecessors, (517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:17:10,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:17:10,323 INFO L93 Difference]: Finished difference Result 182328 states and 193394 transitions. [2024-11-16 04:17:10,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-16 04:17:10,324 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 129.25) internal successors, (517), 4 states have internal predecessors, (517), 0 states have call successors, (0), 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 590 [2024-11-16 04:17:10,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:17:10,453 INFO L225 Difference]: With dead ends: 182328 [2024-11-16 04:17:10,454 INFO L226 Difference]: Without dead ends: 102900 [2024-11-16 04:17:10,516 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 594 GetRequests, 589 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-16 04:17:10,517 INFO L432 NwaCegarLoop]: 63 mSDtfsCounter, 607 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 2239 mSolverCounterSat, 363 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 607 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 2602 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 363 IncrementalHoareTripleChecker+Valid, 2239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-11-16 04:17:10,517 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [607 Valid, 134 Invalid, 2602 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [363 Valid, 2239 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-11-16 04:17:10,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102900 states. [2024-11-16 04:17:11,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102900 to 95218. [2024-11-16 04:17:11,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95218 states, 95217 states have (on average 1.0596007015553945) internal successors, (100892), 95217 states have internal predecessors, (100892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:17:12,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95218 states to 95218 states and 100892 transitions. [2024-11-16 04:17:12,028 INFO L78 Accepts]: Start accepts. Automaton has 95218 states and 100892 transitions. Word has length 590 [2024-11-16 04:17:12,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:17:12,029 INFO L471 AbstractCegarLoop]: Abstraction has 95218 states and 100892 transitions. [2024-11-16 04:17:12,029 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 129.25) internal successors, (517), 4 states have internal predecessors, (517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:17:12,029 INFO L276 IsEmpty]: Start isEmpty. Operand 95218 states and 100892 transitions. [2024-11-16 04:17:12,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 602 [2024-11-16 04:17:12,046 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:17:12,046 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 04:17:12,059 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-16 04:17:12,246 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 04:17:12,247 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:17:12,247 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:17:12,247 INFO L85 PathProgramCache]: Analyzing trace with hash -500156631, now seen corresponding path program 1 times [2024-11-16 04:17:12,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:17:12,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076681824] [2024-11-16 04:17:12,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:17:12,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:17:12,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:17:13,014 INFO L134 CoverageAnalysis]: Checked inductivity of 569 backedges. 465 proven. 0 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2024-11-16 04:17:13,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:17:13,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076681824] [2024-11-16 04:17:13,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1076681824] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 04:17:13,015 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 04:17:13,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 04:17:13,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519473672] [2024-11-16 04:17:13,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:17:13,016 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 04:17:13,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:17:13,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 04:17:13,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 04:17:13,017 INFO L87 Difference]: Start difference. First operand 95218 states and 100892 transitions. Second operand has 3 states, 3 states have (on average 166.33333333333334) internal successors, (499), 3 states have internal predecessors, (499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:17:14,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:17:14,683 INFO L93 Difference]: Finished difference Result 192141 states and 203555 transitions. [2024-11-16 04:17:14,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 04:17:14,684 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 166.33333333333334) internal successors, (499), 3 states have internal predecessors, (499), 0 states have call successors, (0), 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 601 [2024-11-16 04:17:14,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:17:14,797 INFO L225 Difference]: With dead ends: 192141 [2024-11-16 04:17:14,798 INFO L226 Difference]: Without dead ends: 96925 [2024-11-16 04:17:14,830 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 [2024-11-16 04:17:14,830 INFO L432 NwaCegarLoop]: 711 mSDtfsCounter, 94 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 1109 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 757 SdHoareTripleChecker+Invalid, 1145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 1109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-16 04:17:14,830 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 757 Invalid, 1145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 1109 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-16 04:17:14,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96925 states. [2024-11-16 04:17:15,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96925 to 96497. [2024-11-16 04:17:15,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96497 states, 96496 states have (on average 1.0582407560935168) internal successors, (102116), 96496 states have internal predecessors, (102116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:17:16,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96497 states to 96497 states and 102116 transitions. [2024-11-16 04:17:16,055 INFO L78 Accepts]: Start accepts. Automaton has 96497 states and 102116 transitions. Word has length 601 [2024-11-16 04:17:16,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:17:16,056 INFO L471 AbstractCegarLoop]: Abstraction has 96497 states and 102116 transitions. [2024-11-16 04:17:16,056 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 166.33333333333334) internal successors, (499), 3 states have internal predecessors, (499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:17:16,056 INFO L276 IsEmpty]: Start isEmpty. Operand 96497 states and 102116 transitions. [2024-11-16 04:17:16,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 714 [2024-11-16 04:17:16,080 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:17:16,081 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 04:17:16,081 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-16 04:17:16,081 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:17:16,081 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:17:16,081 INFO L85 PathProgramCache]: Analyzing trace with hash -1406745763, now seen corresponding path program 1 times [2024-11-16 04:17:16,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:17:16,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [127269024] [2024-11-16 04:17:16,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:17:16,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:17:16,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:17:17,055 INFO L134 CoverageAnalysis]: Checked inductivity of 958 backedges. 440 proven. 0 refuted. 0 times theorem prover too weak. 518 trivial. 0 not checked. [2024-11-16 04:17:17,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:17:17,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [127269024] [2024-11-16 04:17:17,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [127269024] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 04:17:17,056 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 04:17:17,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-16 04:17:17,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376989921] [2024-11-16 04:17:17,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:17:17,058 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 04:17:17,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:17:17,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 04:17:17,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-16 04:17:17,059 INFO L87 Difference]: Start difference. First operand 96497 states and 102116 transitions. Second operand has 4 states, 4 states have (on average 111.5) internal successors, (446), 4 states have internal predecessors, (446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:17:19,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:17:19,536 INFO L93 Difference]: Finished difference Result 113597 states and 120018 transitions. [2024-11-16 04:17:19,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-16 04:17:19,536 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 111.5) internal successors, (446), 4 states have internal predecessors, (446), 0 states have call successors, (0), 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 713 [2024-11-16 04:17:19,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:17:19,665 INFO L225 Difference]: With dead ends: 113597 [2024-11-16 04:17:19,666 INFO L226 Difference]: Without dead ends: 113168 [2024-11-16 04:17:19,695 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-16 04:17:19,696 INFO L432 NwaCegarLoop]: 74 mSDtfsCounter, 876 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 2350 mSolverCounterSat, 387 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 876 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 2737 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 387 IncrementalHoareTripleChecker+Valid, 2350 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-11-16 04:17:19,696 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [876 Valid, 133 Invalid, 2737 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [387 Valid, 2350 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-11-16 04:17:19,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113168 states.