./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem11_label28.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 023d838f 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/Problem11_label28.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 8ff48638f08507efa79a38e2e8775c5b4b14feea4f002913b53cd095f4b7874d --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-09 19:22:25,451 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 19:22:25,519 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-09 19:22:25,524 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 19:22:25,525 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 19:22:25,551 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 19:22:25,551 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 19:22:25,552 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 19:22:25,552 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-09 19:22:25,553 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-09 19:22:25,553 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 19:22:25,553 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 19:22:25,554 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 19:22:25,554 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 19:22:25,555 INFO L153 SettingsManager]: * Use SBE=true [2024-11-09 19:22:25,555 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 19:22:25,558 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 19:22:25,558 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 19:22:25,559 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 19:22:25,560 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 19:22:25,560 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 19:22:25,561 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 19:22:25,561 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 19:22:25,561 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 19:22:25,561 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 19:22:25,561 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 19:22:25,562 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 19:22:25,562 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 19:22:25,562 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-09 19:22:25,562 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 19:22:25,563 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 19:22:25,563 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 19:22:25,563 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 19:22:25,564 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 19:22:25,564 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 19:22:25,564 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 19:22:25,564 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-09 19:22:25,564 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 19:22:25,565 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 19:22:25,565 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-09 19:22:25,565 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-09 19:22:25,566 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 19:22:25,567 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8ff48638f08507efa79a38e2e8775c5b4b14feea4f002913b53cd095f4b7874d [2024-11-09 19:22:25,847 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 19:22:25,875 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 19:22:25,879 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 19:22:25,880 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 19:22:25,881 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 19:22:25,882 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem11_label28.c [2024-11-09 19:22:27,356 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 19:22:27,673 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 19:22:27,674 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem11_label28.c [2024-11-09 19:22:27,690 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3bb03a4e2/5f56574211a24a75bd1bf23444daf2a3/FLAG5317a5041 [2024-11-09 19:22:27,942 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3bb03a4e2/5f56574211a24a75bd1bf23444daf2a3 [2024-11-09 19:22:27,944 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 19:22:27,946 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 19:22:27,947 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 19:22:27,947 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 19:22:27,954 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 19:22:27,955 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 07:22:27" (1/1) ... [2024-11-09 19:22:27,956 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4008e6b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:22:27, skipping insertion in model container [2024-11-09 19:22:27,956 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 07:22:27" (1/1) ... [2024-11-09 19:22:28,022 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 19:22:28,274 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/Problem11_label28.c[6999,7012] [2024-11-09 19:22:28,500 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 19:22:28,508 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 19:22:28,529 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/Problem11_label28.c[6999,7012] [2024-11-09 19:22:28,645 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 19:22:28,665 INFO L204 MainTranslator]: Completed translation [2024-11-09 19:22:28,666 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:22:28 WrapperNode [2024-11-09 19:22:28,666 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 19:22:28,667 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 19:22:28,668 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 19:22:28,668 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 19:22:28,675 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:22:28" (1/1) ... [2024-11-09 19:22:28,707 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:22:28" (1/1) ... [2024-11-09 19:22:28,845 INFO L138 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 999 [2024-11-09 19:22:28,846 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 19:22:28,846 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 19:22:28,846 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 19:22:28,847 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 19:22:28,857 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:22:28" (1/1) ... [2024-11-09 19:22:28,858 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:22:28" (1/1) ... [2024-11-09 19:22:28,887 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:22:28" (1/1) ... [2024-11-09 19:22:28,962 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]. [2024-11-09 19:22:28,963 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:22:28" (1/1) ... [2024-11-09 19:22:28,963 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:22:28" (1/1) ... [2024-11-09 19:22:29,008 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:22:28" (1/1) ... [2024-11-09 19:22:29,018 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:22:28" (1/1) ... [2024-11-09 19:22:29,031 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:22:28" (1/1) ... [2024-11-09 19:22:29,038 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:22:28" (1/1) ... [2024-11-09 19:22:29,055 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 19:22:29,057 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-09 19:22:29,057 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-09 19:22:29,057 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-09 19:22:29,058 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:22:28" (1/1) ... [2024-11-09 19:22:29,064 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 19:22:29,079 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 19:22:29,097 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) [2024-11-09 19:22:29,101 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 [2024-11-09 19:22:29,144 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 19:22:29,144 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-09 19:22:29,144 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 19:22:29,145 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 19:22:29,207 INFO L256 CfgBuilder]: Building ICFG [2024-11-09 19:22:29,209 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 19:22:31,108 INFO L? ?]: Removed 248 outVars from TransFormulas that were not future-live. [2024-11-09 19:22:31,108 INFO L307 CfgBuilder]: Performing block encoding [2024-11-09 19:22:31,137 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 19:22:31,138 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-09 19:22:31,141 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.11 07:22:31 BoogieIcfgContainer [2024-11-09 19:22:31,142 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-09 19:22:31,143 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 19:22:31,143 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 19:22:31,148 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 19:22:31,149 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 07:22:27" (1/3) ... [2024-11-09 19:22:31,149 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f5f887 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 07:22:31, skipping insertion in model container [2024-11-09 19:22:31,150 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:22:28" (2/3) ... [2024-11-09 19:22:31,150 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f5f887 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 07:22:31, skipping insertion in model container [2024-11-09 19:22:31,150 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.11 07:22:31" (3/3) ... [2024-11-09 19:22:31,151 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem11_label28.c [2024-11-09 19:22:31,170 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 19:22:31,170 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-09 19:22:31,258 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 19:22:31,267 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;@3b50ab26, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 19:22:31,268 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-09 19:22:31,274 INFO L276 IsEmpty]: Start isEmpty. Operand has 286 states, 284 states have (on average 2.1267605633802815) internal successors, (604), 285 states have internal predecessors, (604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:22:31,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-11-09 19:22:31,283 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:22:31,284 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:22:31,284 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:22:31,289 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:22:31,289 INFO L85 PathProgramCache]: Analyzing trace with hash -1127719687, now seen corresponding path program 1 times [2024-11-09 19:22:31,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:22:31,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402948722] [2024-11-09 19:22:31,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:22:31,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:22:31,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:22:31,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 19:22:31,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:22:31,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402948722] [2024-11-09 19:22:31,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1402948722] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:22:31,726 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:22:31,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 19:22:31,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571520352] [2024-11-09 19:22:31,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:22:31,733 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:22:31,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:22:31,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:22:31,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:22:31,760 INFO L87 Difference]: Start difference. First operand has 286 states, 284 states have (on average 2.1267605633802815) internal successors, (604), 285 states have internal predecessors, (604), 0 states have call successors, (0), 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 16.666666666666668) internal successors, (50), 2 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:22:33,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:22:33,189 INFO L93 Difference]: Finished difference Result 782 states and 1726 transitions. [2024-11-09 19:22:33,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:22:33,193 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 2 states have internal predecessors, (50), 0 states have call successors, (0), 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 50 [2024-11-09 19:22:33,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:22:33,206 INFO L225 Difference]: With dead ends: 782 [2024-11-09 19:22:33,207 INFO L226 Difference]: Without dead ends: 416 [2024-11-09 19:22:33,211 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 [2024-11-09 19:22:33,214 INFO L432 NwaCegarLoop]: 170 mSDtfsCounter, 298 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 870 mSolverCounterSat, 131 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 298 SdHoareTripleChecker+Valid, 200 SdHoareTripleChecker+Invalid, 1001 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 131 IncrementalHoareTripleChecker+Valid, 870 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-09 19:22:33,215 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [298 Valid, 200 Invalid, 1001 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [131 Valid, 870 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-09 19:22:33,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 416 states. [2024-11-09 19:22:33,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 416 to 414. [2024-11-09 19:22:33,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 414 states, 413 states have (on average 2.0314769975786926) internal successors, (839), 413 states have internal predecessors, (839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:22:33,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 414 states to 414 states and 839 transitions. [2024-11-09 19:22:33,277 INFO L78 Accepts]: Start accepts. Automaton has 414 states and 839 transitions. Word has length 50 [2024-11-09 19:22:33,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:22:33,278 INFO L471 AbstractCegarLoop]: Abstraction has 414 states and 839 transitions. [2024-11-09 19:22:33,279 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 2 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:22:33,279 INFO L276 IsEmpty]: Start isEmpty. Operand 414 states and 839 transitions. [2024-11-09 19:22:33,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2024-11-09 19:22:33,285 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:22:33,285 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:22:33,285 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 19:22:33,286 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:22:33,286 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:22:33,286 INFO L85 PathProgramCache]: Analyzing trace with hash 887697343, now seen corresponding path program 1 times [2024-11-09 19:22:33,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:22:33,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049256915] [2024-11-09 19:22:33,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:22:33,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:22:33,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:22:33,545 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 19:22:33,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:22:33,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049256915] [2024-11-09 19:22:33,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2049256915] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:22:33,546 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:22:33,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 19:22:33,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795059464] [2024-11-09 19:22:33,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:22:33,548 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:22:33,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:22:33,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:22:33,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:22:33,549 INFO L87 Difference]: Start difference. First operand 414 states and 839 transitions. Second operand has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 2 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:22:34,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:22:34,451 INFO L93 Difference]: Finished difference Result 1217 states and 2487 transitions. [2024-11-09 19:22:34,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:22:34,452 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 2 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 119 [2024-11-09 19:22:34,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:22:34,457 INFO L225 Difference]: With dead ends: 1217 [2024-11-09 19:22:34,457 INFO L226 Difference]: Without dead ends: 805 [2024-11-09 19:22:34,458 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 [2024-11-09 19:22:34,459 INFO L432 NwaCegarLoop]: 106 mSDtfsCounter, 261 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 761 mSolverCounterSat, 148 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 261 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 909 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 148 IncrementalHoareTripleChecker+Valid, 761 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-09 19:22:34,460 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [261 Valid, 127 Invalid, 909 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [148 Valid, 761 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-09 19:22:34,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 805 states. [2024-11-09 19:22:34,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 805 to 792. [2024-11-09 19:22:34,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 792 states, 791 states have (on average 1.9835651074589127) internal successors, (1569), 791 states have internal predecessors, (1569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:22:34,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 792 states to 792 states and 1569 transitions. [2024-11-09 19:22:34,496 INFO L78 Accepts]: Start accepts. Automaton has 792 states and 1569 transitions. Word has length 119 [2024-11-09 19:22:34,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:22:34,497 INFO L471 AbstractCegarLoop]: Abstraction has 792 states and 1569 transitions. [2024-11-09 19:22:34,497 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 2 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:22:34,497 INFO L276 IsEmpty]: Start isEmpty. Operand 792 states and 1569 transitions. [2024-11-09 19:22:34,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2024-11-09 19:22:34,499 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:22:34,500 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:22:34,500 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 19:22:34,500 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:22:34,501 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:22:34,501 INFO L85 PathProgramCache]: Analyzing trace with hash -1114959303, now seen corresponding path program 1 times [2024-11-09 19:22:34,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:22:34,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574642832] [2024-11-09 19:22:34,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:22:34,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:22:34,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:22:34,838 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 19:22:34,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:22:34,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1574642832] [2024-11-09 19:22:34,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1574642832] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:22:34,841 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:22:34,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 19:22:34,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165184981] [2024-11-09 19:22:34,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:22:34,842 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:22:34,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:22:34,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:22:34,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:22:34,844 INFO L87 Difference]: Start difference. First operand 792 states and 1569 transitions. Second operand has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 2 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:22:35,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:22:35,795 INFO L93 Difference]: Finished difference Result 1953 states and 3830 transitions. [2024-11-09 19:22:35,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:22:35,796 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 2 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 121 [2024-11-09 19:22:35,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:22:35,801 INFO L225 Difference]: With dead ends: 1953 [2024-11-09 19:22:35,801 INFO L226 Difference]: Without dead ends: 1163 [2024-11-09 19:22:35,802 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 [2024-11-09 19:22:35,803 INFO L432 NwaCegarLoop]: 171 mSDtfsCounter, 238 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 760 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 238 SdHoareTripleChecker+Valid, 197 SdHoareTripleChecker+Invalid, 803 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 760 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-09 19:22:35,804 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [238 Valid, 197 Invalid, 803 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 760 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-09 19:22:35,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1163 states. [2024-11-09 19:22:35,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1163 to 1163. [2024-11-09 19:22:35,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1163 states, 1162 states have (on average 1.8898450946643717) internal successors, (2196), 1162 states have internal predecessors, (2196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:22:35,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1163 states to 1163 states and 2196 transitions. [2024-11-09 19:22:35,847 INFO L78 Accepts]: Start accepts. Automaton has 1163 states and 2196 transitions. Word has length 121 [2024-11-09 19:22:35,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:22:35,849 INFO L471 AbstractCegarLoop]: Abstraction has 1163 states and 2196 transitions. [2024-11-09 19:22:35,849 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 2 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:22:35,849 INFO L276 IsEmpty]: Start isEmpty. Operand 1163 states and 2196 transitions. [2024-11-09 19:22:35,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2024-11-09 19:22:35,855 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:22:35,855 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:22:35,856 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-09 19:22:35,856 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:22:35,856 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:22:35,856 INFO L85 PathProgramCache]: Analyzing trace with hash -595635087, now seen corresponding path program 1 times [2024-11-09 19:22:35,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:22:35,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503197524] [2024-11-09 19:22:35,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:22:35,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:22:35,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:22:36,190 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2024-11-09 19:22:36,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:22:36,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503197524] [2024-11-09 19:22:36,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [503197524] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:22:36,193 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:22:36,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 19:22:36,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348696236] [2024-11-09 19:22:36,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:22:36,194 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:22:36,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:22:36,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:22:36,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:22:36,198 INFO L87 Difference]: Start difference. First operand 1163 states and 2196 transitions. Second operand has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 2 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:22:37,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:22:37,255 INFO L93 Difference]: Finished difference Result 3074 states and 5836 transitions. [2024-11-09 19:22:37,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:22:37,255 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 2 states have internal predecessors, (118), 0 states have call successors, (0), 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 163 [2024-11-09 19:22:37,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:22:37,264 INFO L225 Difference]: With dead ends: 3074 [2024-11-09 19:22:37,265 INFO L226 Difference]: Without dead ends: 1913 [2024-11-09 19:22:37,268 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 [2024-11-09 19:22:37,269 INFO L432 NwaCegarLoop]: 130 mSDtfsCounter, 227 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 773 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 227 SdHoareTripleChecker+Valid, 161 SdHoareTripleChecker+Invalid, 871 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 773 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-09 19:22:37,273 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [227 Valid, 161 Invalid, 871 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 773 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-09 19:22:37,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1913 states. [2024-11-09 19:22:37,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1913 to 1912. [2024-11-09 19:22:37,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1912 states, 1911 states have (on average 1.8414442700156985) internal successors, (3519), 1911 states have internal predecessors, (3519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:22:37,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1912 states to 1912 states and 3519 transitions. [2024-11-09 19:22:37,316 INFO L78 Accepts]: Start accepts. Automaton has 1912 states and 3519 transitions. Word has length 163 [2024-11-09 19:22:37,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:22:37,318 INFO L471 AbstractCegarLoop]: Abstraction has 1912 states and 3519 transitions. [2024-11-09 19:22:37,318 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 2 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:22:37,318 INFO L276 IsEmpty]: Start isEmpty. Operand 1912 states and 3519 transitions. [2024-11-09 19:22:37,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2024-11-09 19:22:37,322 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:22:37,322 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:22:37,322 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-09 19:22:37,323 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:22:37,323 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:22:37,323 INFO L85 PathProgramCache]: Analyzing trace with hash 356046248, now seen corresponding path program 1 times [2024-11-09 19:22:37,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:22:37,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051580258] [2024-11-09 19:22:37,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:22:37,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:22:37,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:22:37,538 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 19:22:37,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:22:37,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051580258] [2024-11-09 19:22:37,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2051580258] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:22:37,540 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:22:37,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:22:37,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584820496] [2024-11-09 19:22:37,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:22:37,540 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:22:37,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:22:37,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:22:37,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:22:37,544 INFO L87 Difference]: Start difference. First operand 1912 states and 3519 transitions. Second operand has 3 states, 3 states have (on average 59.333333333333336) internal successors, (178), 3 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:22:38,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:22:38,551 INFO L93 Difference]: Finished difference Result 4407 states and 8271 transitions. [2024-11-09 19:22:38,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:22:38,552 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 59.333333333333336) internal successors, (178), 3 states have internal predecessors, (178), 0 states have call successors, (0), 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 178 [2024-11-09 19:22:38,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:22:38,564 INFO L225 Difference]: With dead ends: 4407 [2024-11-09 19:22:38,565 INFO L226 Difference]: Without dead ends: 2682 [2024-11-09 19:22:38,568 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 [2024-11-09 19:22:38,569 INFO L432 NwaCegarLoop]: 412 mSDtfsCounter, 306 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 821 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 306 SdHoareTripleChecker+Valid, 446 SdHoareTripleChecker+Invalid, 872 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 821 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-09 19:22:38,570 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [306 Valid, 446 Invalid, 872 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 821 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-09 19:22:38,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2682 states. [2024-11-09 19:22:38,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2682 to 2679. [2024-11-09 19:22:38,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2679 states, 2678 states have (on average 1.855862584017924) internal successors, (4970), 2678 states have internal predecessors, (4970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:22:38,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2679 states to 2679 states and 4970 transitions. [2024-11-09 19:22:38,656 INFO L78 Accepts]: Start accepts. Automaton has 2679 states and 4970 transitions. Word has length 178 [2024-11-09 19:22:38,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:22:38,656 INFO L471 AbstractCegarLoop]: Abstraction has 2679 states and 4970 transitions. [2024-11-09 19:22:38,657 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 59.333333333333336) internal successors, (178), 3 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:22:38,657 INFO L276 IsEmpty]: Start isEmpty. Operand 2679 states and 4970 transitions. [2024-11-09 19:22:38,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2024-11-09 19:22:38,661 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:22:38,661 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 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] [2024-11-09 19:22:38,662 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-09 19:22:38,662 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:22:38,663 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:22:38,663 INFO L85 PathProgramCache]: Analyzing trace with hash 2090664897, now seen corresponding path program 1 times [2024-11-09 19:22:38,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:22:38,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67306849] [2024-11-09 19:22:38,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:22:38,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:22:38,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:22:38,966 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 93 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-11-09 19:22:38,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:22:38,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67306849] [2024-11-09 19:22:38,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [67306849] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:22:38,968 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:22:38,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:22:38,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706347003] [2024-11-09 19:22:38,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:22:38,969 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:22:38,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:22:38,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:22:38,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:22:38,970 INFO L87 Difference]: Start difference. First operand 2679 states and 4970 transitions. Second operand has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:22:39,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:22:39,983 INFO L93 Difference]: Finished difference Result 6296 states and 11821 transitions. [2024-11-09 19:22:39,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:22:39,984 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 0 states have call successors, (0), 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 234 [2024-11-09 19:22:39,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:22:39,999 INFO L225 Difference]: With dead ends: 6296 [2024-11-09 19:22:39,999 INFO L226 Difference]: Without dead ends: 3804 [2024-11-09 19:22:40,003 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 [2024-11-09 19:22:40,004 INFO L432 NwaCegarLoop]: 493 mSDtfsCounter, 268 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 834 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 268 SdHoareTripleChecker+Valid, 516 SdHoareTripleChecker+Invalid, 920 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 834 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-09 19:22:40,004 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [268 Valid, 516 Invalid, 920 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 834 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-09 19:22:40,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3804 states. [2024-11-09 19:22:40,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3804 to 3605. [2024-11-09 19:22:40,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3605 states, 3604 states have (on average 1.8393451720310765) internal successors, (6629), 3604 states have internal predecessors, (6629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:22:40,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3605 states to 3605 states and 6629 transitions. [2024-11-09 19:22:40,078 INFO L78 Accepts]: Start accepts. Automaton has 3605 states and 6629 transitions. Word has length 234 [2024-11-09 19:22:40,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:22:40,079 INFO L471 AbstractCegarLoop]: Abstraction has 3605 states and 6629 transitions. [2024-11-09 19:22:40,079 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:22:40,079 INFO L276 IsEmpty]: Start isEmpty. Operand 3605 states and 6629 transitions. [2024-11-09 19:22:40,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2024-11-09 19:22:40,082 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:22:40,083 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-09 19:22:40,083 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-09 19:22:40,083 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:22:40,084 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:22:40,084 INFO L85 PathProgramCache]: Analyzing trace with hash -286722769, now seen corresponding path program 1 times [2024-11-09 19:22:40,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:22:40,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431043211] [2024-11-09 19:22:40,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:22:40,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:22:40,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:22:40,783 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 66 proven. 27 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2024-11-09 19:22:40,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:22:40,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1431043211] [2024-11-09 19:22:40,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1431043211] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 19:22:40,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1874667835] [2024-11-09 19:22:40,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:22:40,784 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 19:22:40,784 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 19:22:40,786 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) [2024-11-09 19:22:40,787 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 19:22:40,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:22:40,910 INFO L255 TraceCheckSpWp]: Trace formula consists of 350 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-09 19:22:40,922 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 19:22:41,078 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 169 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 19:22:41,082 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 19:22:41,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1874667835] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:22:41,083 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 19:22:41,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-11-09 19:22:41,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621967179] [2024-11-09 19:22:41,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:22:41,084 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:22:41,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:22:41,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:22:41,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 19:22:41,085 INFO L87 Difference]: Start difference. First operand 3605 states and 6629 transitions. Second operand has 3 states, 3 states have (on average 80.0) internal successors, (240), 3 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:22:42,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:22:42,201 INFO L93 Difference]: Finished difference Result 7230 states and 13297 transitions. [2024-11-09 19:22:42,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:22:42,202 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 80.0) internal successors, (240), 3 states have internal predecessors, (240), 0 states have call successors, (0), 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 240 [2024-11-09 19:22:42,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:22:42,217 INFO L225 Difference]: With dead ends: 7230 [2024-11-09 19:22:42,218 INFO L226 Difference]: Without dead ends: 3627 [2024-11-09 19:22:42,222 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 239 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 19:22:42,223 INFO L432 NwaCegarLoop]: 405 mSDtfsCounter, 257 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 790 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 257 SdHoareTripleChecker+Valid, 423 SdHoareTripleChecker+Invalid, 893 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 790 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-09 19:22:42,224 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [257 Valid, 423 Invalid, 893 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 790 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-09 19:22:42,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3627 states. [2024-11-09 19:22:42,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3627 to 3604. [2024-11-09 19:22:42,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3604 states, 3603 states have (on average 1.8126561199000832) internal successors, (6531), 3603 states have internal predecessors, (6531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:22:42,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3604 states to 3604 states and 6531 transitions. [2024-11-09 19:22:42,307 INFO L78 Accepts]: Start accepts. Automaton has 3604 states and 6531 transitions. Word has length 240 [2024-11-09 19:22:42,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:22:42,308 INFO L471 AbstractCegarLoop]: Abstraction has 3604 states and 6531 transitions. [2024-11-09 19:22:42,308 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 80.0) internal successors, (240), 3 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:22:42,308 INFO L276 IsEmpty]: Start isEmpty. Operand 3604 states and 6531 transitions. [2024-11-09 19:22:42,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2024-11-09 19:22:42,312 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:22:42,312 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-09 19:22:42,330 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-09 19:22:42,516 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 19:22:42,517 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:22:42,517 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:22:42,518 INFO L85 PathProgramCache]: Analyzing trace with hash 350220854, now seen corresponding path program 1 times [2024-11-09 19:22:42,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:22:42,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081177675] [2024-11-09 19:22:42,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:22:42,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:22:42,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:22:42,771 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 93 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2024-11-09 19:22:42,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:22:42,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081177675] [2024-11-09 19:22:42,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1081177675] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:22:42,772 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:22:42,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:22:42,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22708039] [2024-11-09 19:22:42,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:22:42,773 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:22:42,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:22:42,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:22:42,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:22:42,775 INFO L87 Difference]: Start difference. First operand 3604 states and 6531 transitions. Second operand has 3 states, 3 states have (on average 60.0) internal successors, (180), 3 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:22:43,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:22:43,823 INFO L93 Difference]: Finished difference Result 8132 states and 14846 transitions. [2024-11-09 19:22:43,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:22:43,824 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 60.0) internal successors, (180), 3 states have internal predecessors, (180), 0 states have call successors, (0), 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 245 [2024-11-09 19:22:43,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:22:43,842 INFO L225 Difference]: With dead ends: 8132 [2024-11-09 19:22:43,843 INFO L226 Difference]: Without dead ends: 4530 [2024-11-09 19:22:43,847 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 [2024-11-09 19:22:43,848 INFO L432 NwaCegarLoop]: 127 mSDtfsCounter, 296 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 737 mSolverCounterSat, 132 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 296 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 869 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 132 IncrementalHoareTripleChecker+Valid, 737 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-09 19:22:43,848 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [296 Valid, 156 Invalid, 869 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [132 Valid, 737 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-09 19:22:43,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4530 states. [2024-11-09 19:22:43,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4530 to 4345. [2024-11-09 19:22:43,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4345 states, 4344 states have (on average 1.8084714548802947) internal successors, (7856), 4344 states have internal predecessors, (7856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:22:43,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4345 states to 4345 states and 7856 transitions. [2024-11-09 19:22:43,932 INFO L78 Accepts]: Start accepts. Automaton has 4345 states and 7856 transitions. Word has length 245 [2024-11-09 19:22:43,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:22:43,933 INFO L471 AbstractCegarLoop]: Abstraction has 4345 states and 7856 transitions. [2024-11-09 19:22:43,933 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 60.0) internal successors, (180), 3 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:22:43,934 INFO L276 IsEmpty]: Start isEmpty. Operand 4345 states and 7856 transitions. [2024-11-09 19:22:43,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2024-11-09 19:22:43,937 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:22:43,937 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-09 19:22:43,938 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-09 19:22:43,938 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:22:43,938 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:22:43,939 INFO L85 PathProgramCache]: Analyzing trace with hash -616174837, now seen corresponding path program 1 times [2024-11-09 19:22:43,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:22:43,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626862060] [2024-11-09 19:22:43,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:22:43,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:22:43,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:22:44,222 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 190 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 19:22:44,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:22:44,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626862060] [2024-11-09 19:22:44,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1626862060] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:22:44,223 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:22:44,223 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:22:44,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498732477] [2024-11-09 19:22:44,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:22:44,224 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:22:44,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:22:44,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:22:44,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:22:44,225 INFO L87 Difference]: Start difference. First operand 4345 states and 7856 transitions. Second operand has 3 states, 3 states have (on average 87.0) internal successors, (261), 3 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:22:45,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:22:45,151 INFO L93 Difference]: Finished difference Result 10747 states and 19598 transitions. [2024-11-09 19:22:45,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:22:45,152 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 87.0) internal successors, (261), 3 states have internal predecessors, (261), 0 states have call successors, (0), 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 261 [2024-11-09 19:22:45,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:22:45,183 INFO L225 Difference]: With dead ends: 10747 [2024-11-09 19:22:45,187 INFO L226 Difference]: Without dead ends: 6404 [2024-11-09 19:22:45,195 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:22:45,196 INFO L432 NwaCegarLoop]: 153 mSDtfsCounter, 238 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 844 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 238 SdHoareTripleChecker+Valid, 178 SdHoareTripleChecker+Invalid, 920 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 844 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-09 19:22:45,197 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [238 Valid, 178 Invalid, 920 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 844 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-09 19:22:45,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6404 states. [2024-11-09 19:22:45,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6404 to 6398. [2024-11-09 19:22:45,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6398 states, 6397 states have (on average 1.8120994216038768) internal successors, (11592), 6397 states have internal predecessors, (11592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:22:45,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6398 states to 6398 states and 11592 transitions. [2024-11-09 19:22:45,320 INFO L78 Accepts]: Start accepts. Automaton has 6398 states and 11592 transitions. Word has length 261 [2024-11-09 19:22:45,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:22:45,321 INFO L471 AbstractCegarLoop]: Abstraction has 6398 states and 11592 transitions. [2024-11-09 19:22:45,321 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 87.0) internal successors, (261), 3 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:22:45,321 INFO L276 IsEmpty]: Start isEmpty. Operand 6398 states and 11592 transitions. [2024-11-09 19:22:45,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2024-11-09 19:22:45,325 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:22:45,326 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:22:45,326 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-09 19:22:45,326 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:22:45,326 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:22:45,327 INFO L85 PathProgramCache]: Analyzing trace with hash -401914835, now seen corresponding path program 1 times [2024-11-09 19:22:45,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:22:45,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303253296] [2024-11-09 19:22:45,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:22:45,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:22:45,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:22:45,758 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 169 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 19:22:45,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:22:45,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303253296] [2024-11-09 19:22:45,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [303253296] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:22:45,759 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:22:45,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:22:45,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825739964] [2024-11-09 19:22:45,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:22:45,760 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 19:22:45,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:22:45,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 19:22:45,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 19:22:45,766 INFO L87 Difference]: Start difference. First operand 6398 states and 11592 transitions. Second operand has 4 states, 4 states have (on average 67.75) internal successors, (271), 3 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:22:47,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:22:47,394 INFO L93 Difference]: Finished difference Result 17812 states and 32509 transitions. [2024-11-09 19:22:47,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 19:22:47,395 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 67.75) internal successors, (271), 3 states have internal predecessors, (271), 0 states have call successors, (0), 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 271 [2024-11-09 19:22:47,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:22:47,452 INFO L225 Difference]: With dead ends: 17812 [2024-11-09 19:22:47,452 INFO L226 Difference]: Without dead ends: 11416 [2024-11-09 19:22:47,459 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 19:22:47,460 INFO L432 NwaCegarLoop]: 36 mSDtfsCounter, 468 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 1546 mSolverCounterSat, 274 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 468 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 1820 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 274 IncrementalHoareTripleChecker+Valid, 1546 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-09 19:22:47,460 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [468 Valid, 77 Invalid, 1820 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [274 Valid, 1546 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-09 19:22:47,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11416 states. [2024-11-09 19:22:47,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11416 to 11407. [2024-11-09 19:22:47,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11407 states, 11406 states have (on average 1.8156233561283535) internal successors, (20709), 11406 states have internal predecessors, (20709), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:22:47,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11407 states to 11407 states and 20709 transitions. [2024-11-09 19:22:47,616 INFO L78 Accepts]: Start accepts. Automaton has 11407 states and 20709 transitions. Word has length 271 [2024-11-09 19:22:47,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:22:47,617 INFO L471 AbstractCegarLoop]: Abstraction has 11407 states and 20709 transitions. [2024-11-09 19:22:47,617 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 67.75) internal successors, (271), 3 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:22:47,617 INFO L276 IsEmpty]: Start isEmpty. Operand 11407 states and 20709 transitions. [2024-11-09 19:22:47,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2024-11-09 19:22:47,623 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:22:47,624 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:22:47,624 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-09 19:22:47,624 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:22:47,625 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:22:47,625 INFO L85 PathProgramCache]: Analyzing trace with hash -350955795, now seen corresponding path program 1 times [2024-11-09 19:22:47,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:22:47,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595393800] [2024-11-09 19:22:47,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:22:47,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:22:47,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:22:48,227 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 190 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 19:22:48,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:22:48,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595393800] [2024-11-09 19:22:48,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [595393800] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:22:48,227 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:22:48,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 19:22:48,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841597859] [2024-11-09 19:22:48,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:22:48,229 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 19:22:48,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:22:48,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 19:22:48,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-09 19:22:48,230 INFO L87 Difference]: Start difference. First operand 11407 states and 20709 transitions. Second operand has 5 states, 5 states have (on average 54.2) internal successors, (271), 4 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:22:50,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:22:50,180 INFO L93 Difference]: Finished difference Result 26163 states and 47834 transitions. [2024-11-09 19:22:50,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 19:22:50,180 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 54.2) internal successors, (271), 4 states have internal predecessors, (271), 0 states have call successors, (0), 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 271 [2024-11-09 19:22:50,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:22:50,214 INFO L225 Difference]: With dead ends: 26163 [2024-11-09 19:22:50,215 INFO L226 Difference]: Without dead ends: 15128 [2024-11-09 19:22:50,228 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-09 19:22:50,229 INFO L432 NwaCegarLoop]: 42 mSDtfsCounter, 736 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 2270 mSolverCounterSat, 338 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 736 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 2608 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 338 IncrementalHoareTripleChecker+Valid, 2270 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-09 19:22:50,229 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [736 Valid, 92 Invalid, 2608 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [338 Valid, 2270 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-09 19:22:50,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15128 states. [2024-11-09 19:22:50,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15128 to 13997. [2024-11-09 19:22:50,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13997 states, 13996 states have (on average 1.802157759359817) internal successors, (25223), 13996 states have internal predecessors, (25223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:22:50,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13997 states to 13997 states and 25223 transitions. [2024-11-09 19:22:50,572 INFO L78 Accepts]: Start accepts. Automaton has 13997 states and 25223 transitions. Word has length 271 [2024-11-09 19:22:50,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:22:50,573 INFO L471 AbstractCegarLoop]: Abstraction has 13997 states and 25223 transitions. [2024-11-09 19:22:50,573 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 54.2) internal successors, (271), 4 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:22:50,573 INFO L276 IsEmpty]: Start isEmpty. Operand 13997 states and 25223 transitions. [2024-11-09 19:22:50,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2024-11-09 19:22:50,581 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:22:50,581 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-09 19:22:50,582 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-09 19:22:50,582 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:22:50,583 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:22:50,583 INFO L85 PathProgramCache]: Analyzing trace with hash 1272271696, now seen corresponding path program 1 times [2024-11-09 19:22:50,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:22:50,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704803839] [2024-11-09 19:22:50,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:22:50,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:22:50,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:22:50,815 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 186 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 19:22:50,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:22:50,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704803839] [2024-11-09 19:22:50,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [704803839] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:22:50,816 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:22:50,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:22:50,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264185296] [2024-11-09 19:22:50,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:22:50,818 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 19:22:50,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:22:50,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 19:22:50,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 19:22:50,819 INFO L87 Difference]: Start difference. First operand 13997 states and 25223 transitions. Second operand has 4 states, 4 states have (on average 68.0) internal successors, (272), 3 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:22:52,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:22:52,379 INFO L93 Difference]: Finished difference Result 38593 states and 69896 transitions. [2024-11-09 19:22:52,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 19:22:52,379 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 68.0) internal successors, (272), 3 states have internal predecessors, (272), 0 states have call successors, (0), 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 272 [2024-11-09 19:22:52,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:22:52,437 INFO L225 Difference]: With dead ends: 38593 [2024-11-09 19:22:52,437 INFO L226 Difference]: Without dead ends: 24968 [2024-11-09 19:22:52,455 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 19:22:52,456 INFO L432 NwaCegarLoop]: 47 mSDtfsCounter, 507 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 1624 mSolverCounterSat, 166 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 507 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 1790 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 166 IncrementalHoareTripleChecker+Valid, 1624 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-09 19:22:52,457 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [507 Valid, 101 Invalid, 1790 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [166 Valid, 1624 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-09 19:22:52,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24968 states. [2024-11-09 19:22:52,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24968 to 24407. [2024-11-09 19:22:52,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24407 states, 24406 states have (on average 1.8019749241989675) internal successors, (43979), 24406 states have internal predecessors, (43979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:22:52,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24407 states to 24407 states and 43979 transitions. [2024-11-09 19:22:52,914 INFO L78 Accepts]: Start accepts. Automaton has 24407 states and 43979 transitions. Word has length 272 [2024-11-09 19:22:52,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:22:52,915 INFO L471 AbstractCegarLoop]: Abstraction has 24407 states and 43979 transitions. [2024-11-09 19:22:52,915 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 68.0) internal successors, (272), 3 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:22:52,915 INFO L276 IsEmpty]: Start isEmpty. Operand 24407 states and 43979 transitions. [2024-11-09 19:22:52,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286 [2024-11-09 19:22:52,924 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:22:52,925 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-09 19:22:52,925 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-09 19:22:52,925 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:22:52,925 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:22:52,926 INFO L85 PathProgramCache]: Analyzing trace with hash 1749999035, now seen corresponding path program 1 times [2024-11-09 19:22:52,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:22:52,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462183752] [2024-11-09 19:22:52,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:22:52,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:22:52,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:22:53,440 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 93 proven. 106 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 19:22:53,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:22:53,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [462183752] [2024-11-09 19:22:53,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [462183752] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 19:22:53,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1351129140] [2024-11-09 19:22:53,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:22:53,441 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 19:22:53,441 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 19:22:53,443 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) [2024-11-09 19:22:53,444 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 19:22:53,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:22:53,570 INFO L255 TraceCheckSpWp]: Trace formula consists of 398 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-09 19:22:53,579 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 19:22:53,930 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 199 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 19:22:53,930 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 19:22:53,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1351129140] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:22:53,930 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 19:22:53,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2024-11-09 19:22:53,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735189239] [2024-11-09 19:22:53,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:22:53,931 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:22:53,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:22:53,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:22:53,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-09 19:22:53,933 INFO L87 Difference]: Start difference. First operand 24407 states and 43979 transitions. Second operand has 3 states, 3 states have (on average 95.0) internal successors, (285), 3 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:22:55,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:22:55,053 INFO L93 Difference]: Finished difference Result 48281 states and 87220 transitions. [2024-11-09 19:22:55,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:22:55,054 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 95.0) internal successors, (285), 3 states have internal predecessors, (285), 0 states have call successors, (0), 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 285 [2024-11-09 19:22:55,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:22:55,125 INFO L225 Difference]: With dead ends: 48281 [2024-11-09 19:22:55,125 INFO L226 Difference]: Without dead ends: 25921 [2024-11-09 19:22:55,152 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 288 GetRequests, 284 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-09 19:22:55,153 INFO L432 NwaCegarLoop]: 450 mSDtfsCounter, 218 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 808 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 218 SdHoareTripleChecker+Valid, 474 SdHoareTripleChecker+Invalid, 827 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 808 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-09 19:22:55,154 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [218 Valid, 474 Invalid, 827 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 808 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-09 19:22:55,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25921 states. [2024-11-09 19:22:55,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25921 to 25537. [2024-11-09 19:22:55,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25537 states, 25536 states have (on average 1.8016525689223057) internal successors, (46007), 25536 states have internal predecessors, (46007), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:22:55,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25537 states to 25537 states and 46007 transitions. [2024-11-09 19:22:55,942 INFO L78 Accepts]: Start accepts. Automaton has 25537 states and 46007 transitions. Word has length 285 [2024-11-09 19:22:55,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:22:55,943 INFO L471 AbstractCegarLoop]: Abstraction has 25537 states and 46007 transitions. [2024-11-09 19:22:55,947 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 95.0) internal successors, (285), 3 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:22:55,947 INFO L276 IsEmpty]: Start isEmpty. Operand 25537 states and 46007 transitions. [2024-11-09 19:22:55,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 313 [2024-11-09 19:22:55,972 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:22:55,973 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2024-11-09 19:22:56,009 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-09 19:22:56,173 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,SelfDestructingSolverStorable12 [2024-11-09 19:22:56,173 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:22:56,174 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:22:56,174 INFO L85 PathProgramCache]: Analyzing trace with hash -120371559, now seen corresponding path program 1 times [2024-11-09 19:22:56,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:22:56,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870638085] [2024-11-09 19:22:56,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:22:56,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:22:56,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:22:56,542 INFO L134 CoverageAnalysis]: Checked inductivity of 356 backedges. 309 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2024-11-09 19:22:56,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:22:56,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870638085] [2024-11-09 19:22:56,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [870638085] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:22:56,543 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:22:56,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:22:56,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394927245] [2024-11-09 19:22:56,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:22:56,545 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:22:56,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:22:56,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:22:56,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:22:56,546 INFO L87 Difference]: Start difference. First operand 25537 states and 46007 transitions. Second operand has 3 states, 3 states have (on average 88.66666666666667) internal successors, (266), 3 states have internal predecessors, (266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:22:57,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:22:57,475 INFO L93 Difference]: Finished difference Result 54804 states and 99047 transitions. [2024-11-09 19:22:57,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:22:57,476 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 88.66666666666667) internal successors, (266), 3 states have internal predecessors, (266), 0 states have call successors, (0), 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 312 [2024-11-09 19:22:57,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:22:57,521 INFO L225 Difference]: With dead ends: 54804 [2024-11-09 19:22:57,521 INFO L226 Difference]: Without dead ends: 29639 [2024-11-09 19:22:57,544 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 [2024-11-09 19:22:57,545 INFO L432 NwaCegarLoop]: 444 mSDtfsCounter, 254 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 791 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 254 SdHoareTripleChecker+Valid, 466 SdHoareTripleChecker+Invalid, 851 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 791 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-09 19:22:57,545 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [254 Valid, 466 Invalid, 851 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 791 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-09 19:22:57,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29639 states. [2024-11-09 19:22:58,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29639 to 29420. [2024-11-09 19:22:58,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29420 states, 29419 states have (on average 1.7952003807063461) internal successors, (52813), 29419 states have internal predecessors, (52813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:22:58,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29420 states to 29420 states and 52813 transitions. [2024-11-09 19:22:58,345 INFO L78 Accepts]: Start accepts. Automaton has 29420 states and 52813 transitions. Word has length 312 [2024-11-09 19:22:58,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:22:58,346 INFO L471 AbstractCegarLoop]: Abstraction has 29420 states and 52813 transitions. [2024-11-09 19:22:58,346 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 88.66666666666667) internal successors, (266), 3 states have internal predecessors, (266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:22:58,346 INFO L276 IsEmpty]: Start isEmpty. Operand 29420 states and 52813 transitions. [2024-11-09 19:22:58,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 322 [2024-11-09 19:22:58,355 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:22:58,355 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2024-11-09 19:22:58,356 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-09 19:22:58,356 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:22:58,356 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:22:58,356 INFO L85 PathProgramCache]: Analyzing trace with hash -1671288356, now seen corresponding path program 1 times [2024-11-09 19:22:58,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:22:58,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226682254] [2024-11-09 19:22:58,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:22:58,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:22:58,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:22:58,744 INFO L134 CoverageAnalysis]: Checked inductivity of 347 backedges. 282 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2024-11-09 19:22:58,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:22:58,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226682254] [2024-11-09 19:22:58,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [226682254] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:22:58,744 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:22:58,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:22:58,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567401031] [2024-11-09 19:22:58,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:22:58,745 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:22:58,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:22:58,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:22:58,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:22:58,746 INFO L87 Difference]: Start difference. First operand 29420 states and 52813 transitions. Second operand has 3 states, 3 states have (on average 85.66666666666667) internal successors, (257), 3 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:22:59,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:22:59,770 INFO L93 Difference]: Finished difference Result 59753 states and 107666 transitions. [2024-11-09 19:22:59,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:22:59,770 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 85.66666666666667) internal successors, (257), 3 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 321 [2024-11-09 19:22:59,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:22:59,823 INFO L225 Difference]: With dead ends: 59753 [2024-11-09 19:22:59,823 INFO L226 Difference]: Without dead ends: 32378 [2024-11-09 19:22:59,841 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 [2024-11-09 19:22:59,842 INFO L432 NwaCegarLoop]: 423 mSDtfsCounter, 265 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 799 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 265 SdHoareTripleChecker+Valid, 441 SdHoareTripleChecker+Invalid, 898 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 799 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-09 19:22:59,842 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [265 Valid, 441 Invalid, 898 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 799 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-09 19:22:59,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32378 states. [2024-11-09 19:23:00,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32378 to 32008. [2024-11-09 19:23:00,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32008 states, 32007 states have (on average 1.7895147936388915) internal successors, (57277), 32007 states have internal predecessors, (57277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:23:00,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32008 states to 32008 states and 57277 transitions. [2024-11-09 19:23:00,440 INFO L78 Accepts]: Start accepts. Automaton has 32008 states and 57277 transitions. Word has length 321 [2024-11-09 19:23:00,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:23:00,441 INFO L471 AbstractCegarLoop]: Abstraction has 32008 states and 57277 transitions. [2024-11-09 19:23:00,441 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 85.66666666666667) internal successors, (257), 3 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:23:00,441 INFO L276 IsEmpty]: Start isEmpty. Operand 32008 states and 57277 transitions. [2024-11-09 19:23:00,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 332 [2024-11-09 19:23:00,452 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:23:00,452 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:23:00,452 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-09 19:23:00,453 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:23:00,457 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:23:00,458 INFO L85 PathProgramCache]: Analyzing trace with hash 154384795, now seen corresponding path program 1 times [2024-11-09 19:23:00,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:23:00,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263275681] [2024-11-09 19:23:00,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:23:00,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:23:00,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:23:01,746 INFO L134 CoverageAnalysis]: Checked inductivity of 383 backedges. 297 proven. 72 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-09 19:23:01,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:23:01,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263275681] [2024-11-09 19:23:01,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1263275681] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 19:23:01,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2121815483] [2024-11-09 19:23:01,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:23:01,748 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 19:23:01,748 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 19:23:01,750 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) [2024-11-09 19:23:01,751 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-09 19:23:01,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:23:01,903 INFO L255 TraceCheckSpWp]: Trace formula consists of 465 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-09 19:23:01,909 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 19:23:02,128 INFO L134 CoverageAnalysis]: Checked inductivity of 383 backedges. 140 proven. 0 refuted. 0 times theorem prover too weak. 243 trivial. 0 not checked. [2024-11-09 19:23:02,129 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 19:23:02,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2121815483] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:23:02,129 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 19:23:02,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2024-11-09 19:23:02,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150715907] [2024-11-09 19:23:02,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:23:02,130 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:23:02,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:23:02,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:23:02,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-09 19:23:02,132 INFO L87 Difference]: Start difference. First operand 32008 states and 57277 transitions. Second operand has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 3 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:23:03,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:23:03,449 INFO L93 Difference]: Finished difference Result 72959 states and 130803 transitions. [2024-11-09 19:23:03,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:23:03,450 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 3 states have internal predecessors, (166), 0 states have call successors, (0), 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 331 [2024-11-09 19:23:03,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:23:03,524 INFO L225 Difference]: With dead ends: 72959 [2024-11-09 19:23:03,524 INFO L226 Difference]: Without dead ends: 43183 [2024-11-09 19:23:03,554 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 337 GetRequests, 332 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-09 19:23:03,555 INFO L432 NwaCegarLoop]: 486 mSDtfsCounter, 289 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 846 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 289 SdHoareTripleChecker+Valid, 517 SdHoareTripleChecker+Invalid, 870 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 846 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-09 19:23:03,556 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [289 Valid, 517 Invalid, 870 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 846 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-09 19:23:03,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43183 states. [2024-11-09 19:23:04,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43183 to 41505. [2024-11-09 19:23:04,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41505 states, 41504 states have (on average 1.7884300308404009) internal successors, (74227), 41504 states have internal predecessors, (74227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:23:04,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41505 states to 41505 states and 74227 transitions. [2024-11-09 19:23:04,243 INFO L78 Accepts]: Start accepts. Automaton has 41505 states and 74227 transitions. Word has length 331 [2024-11-09 19:23:04,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:23:04,244 INFO L471 AbstractCegarLoop]: Abstraction has 41505 states and 74227 transitions. [2024-11-09 19:23:04,244 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 3 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:23:04,244 INFO L276 IsEmpty]: Start isEmpty. Operand 41505 states and 74227 transitions. [2024-11-09 19:23:04,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 337 [2024-11-09 19:23:04,256 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:23:04,256 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:23:04,275 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-09 19:23:04,456 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 19:23:04,457 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:23:04,457 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:23:04,457 INFO L85 PathProgramCache]: Analyzing trace with hash 2039459983, now seen corresponding path program 1 times [2024-11-09 19:23:04,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:23:04,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745317445] [2024-11-09 19:23:04,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:23:04,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:23:04,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:23:04,774 INFO L134 CoverageAnalysis]: Checked inductivity of 382 backedges. 312 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-11-09 19:23:04,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:23:04,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745317445] [2024-11-09 19:23:04,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [745317445] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:23:04,775 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:23:04,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:23:04,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723315519] [2024-11-09 19:23:04,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:23:04,775 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:23:04,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:23:04,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:23:04,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:23:04,776 INFO L87 Difference]: Start difference. First operand 41505 states and 74227 transitions. Second operand has 3 states, 3 states have (on average 89.0) internal successors, (267), 3 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:23:05,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:23:05,913 INFO L93 Difference]: Finished difference Result 76076 states and 136074 transitions. [2024-11-09 19:23:05,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:23:05,914 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 89.0) internal successors, (267), 3 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 336 [2024-11-09 19:23:05,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:23:05,951 INFO L225 Difference]: With dead ends: 76076 [2024-11-09 19:23:05,951 INFO L226 Difference]: Without dead ends: 34384 [2024-11-09 19:23:05,963 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 [2024-11-09 19:23:05,963 INFO L432 NwaCegarLoop]: 124 mSDtfsCounter, 258 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 685 mSolverCounterSat, 136 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 258 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 821 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 136 IncrementalHoareTripleChecker+Valid, 685 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-09 19:23:05,964 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [258 Valid, 149 Invalid, 821 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [136 Valid, 685 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-09 19:23:05,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34384 states. [2024-11-09 19:23:06,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34384 to 27698. [2024-11-09 19:23:06,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27698 states, 27697 states have (on average 1.7571578149258043) internal successors, (48668), 27697 states have internal predecessors, (48668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:23:06,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27698 states to 27698 states and 48668 transitions. [2024-11-09 19:23:06,409 INFO L78 Accepts]: Start accepts. Automaton has 27698 states and 48668 transitions. Word has length 336 [2024-11-09 19:23:06,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:23:06,410 INFO L471 AbstractCegarLoop]: Abstraction has 27698 states and 48668 transitions. [2024-11-09 19:23:06,410 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 89.0) internal successors, (267), 3 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:23:06,410 INFO L276 IsEmpty]: Start isEmpty. Operand 27698 states and 48668 transitions. [2024-11-09 19:23:06,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 341 [2024-11-09 19:23:06,418 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:23:06,419 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:23:06,419 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-09 19:23:06,419 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:23:06,419 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:23:06,420 INFO L85 PathProgramCache]: Analyzing trace with hash 380195874, now seen corresponding path program 1 times [2024-11-09 19:23:06,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:23:06,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057622380] [2024-11-09 19:23:06,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:23:06,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:23:06,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:23:07,574 INFO L134 CoverageAnalysis]: Checked inductivity of 385 backedges. 285 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 19:23:07,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:23:07,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057622380] [2024-11-09 19:23:07,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1057622380] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 19:23:07,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2054575890] [2024-11-09 19:23:07,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:23:07,576 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 19:23:07,576 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 19:23:07,578 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 19:23:07,580 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-09 19:23:07,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:23:07,751 INFO L255 TraceCheckSpWp]: Trace formula consists of 473 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-09 19:23:07,755 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 19:23:08,176 INFO L134 CoverageAnalysis]: Checked inductivity of 385 backedges. 316 proven. 0 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2024-11-09 19:23:08,176 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 19:23:08,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2054575890] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:23:08,177 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 19:23:08,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2024-11-09 19:23:08,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928247757] [2024-11-09 19:23:08,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:23:08,178 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:23:08,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:23:08,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:23:08,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-09 19:23:08,179 INFO L87 Difference]: Start difference. First operand 27698 states and 48668 transitions. Second operand has 3 states, 3 states have (on average 90.66666666666667) internal successors, (272), 3 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:23:08,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:23:08,997 INFO L93 Difference]: Finished difference Result 59112 states and 103816 transitions. [2024-11-09 19:23:08,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:23:08,997 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 90.66666666666667) internal successors, (272), 3 states have internal predecessors, (272), 0 states have call successors, (0), 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 340 [2024-11-09 19:23:08,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:23:09,041 INFO L225 Difference]: With dead ends: 59112 [2024-11-09 19:23:09,041 INFO L226 Difference]: Without dead ends: 30861 [2024-11-09 19:23:09,059 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 345 GetRequests, 340 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-09 19:23:09,060 INFO L432 NwaCegarLoop]: 466 mSDtfsCounter, 203 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 737 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 203 SdHoareTripleChecker+Valid, 487 SdHoareTripleChecker+Invalid, 780 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 737 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-09 19:23:09,060 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [203 Valid, 487 Invalid, 780 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 737 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-09 19:23:09,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30861 states. [2024-11-09 19:23:09,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30861 to 28635. [2024-11-09 19:23:09,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28635 states, 28634 states have (on average 1.7477125096039674) internal successors, (50044), 28634 states have internal predecessors, (50044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:23:09,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28635 states to 28635 states and 50044 transitions. [2024-11-09 19:23:09,525 INFO L78 Accepts]: Start accepts. Automaton has 28635 states and 50044 transitions. Word has length 340 [2024-11-09 19:23:09,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:23:09,526 INFO L471 AbstractCegarLoop]: Abstraction has 28635 states and 50044 transitions. [2024-11-09 19:23:09,526 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 90.66666666666667) internal successors, (272), 3 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:23:09,526 INFO L276 IsEmpty]: Start isEmpty. Operand 28635 states and 50044 transitions. [2024-11-09 19:23:09,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 362 [2024-11-09 19:23:09,534 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:23:09,535 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:23:09,548 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-09 19:23:09,735 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-09 19:23:09,735 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:23:09,736 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:23:09,736 INFO L85 PathProgramCache]: Analyzing trace with hash 849109694, now seen corresponding path program 1 times [2024-11-09 19:23:09,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:23:09,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911154309] [2024-11-09 19:23:09,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:23:09,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:23:09,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:23:10,832 INFO L134 CoverageAnalysis]: Checked inductivity of 427 backedges. 256 proven. 51 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2024-11-09 19:23:10,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:23:10,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911154309] [2024-11-09 19:23:10,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1911154309] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 19:23:10,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1670463036] [2024-11-09 19:23:10,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:23:10,833 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 19:23:10,833 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 19:23:10,835 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 19:23:10,837 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-09 19:23:10,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:23:10,980 INFO L255 TraceCheckSpWp]: Trace formula consists of 494 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-09 19:23:10,988 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 19:23:11,262 INFO L134 CoverageAnalysis]: Checked inductivity of 427 backedges. 337 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2024-11-09 19:23:11,263 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 19:23:11,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1670463036] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:23:11,263 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 19:23:11,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2024-11-09 19:23:11,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516315448] [2024-11-09 19:23:11,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:23:11,265 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:23:11,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:23:11,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:23:11,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-09 19:23:11,267 INFO L87 Difference]: Start difference. First operand 28635 states and 50044 transitions. Second operand has 3 states, 3 states have (on average 90.66666666666667) internal successors, (272), 3 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:23:12,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:23:12,106 INFO L93 Difference]: Finished difference Result 55784 states and 97507 transitions. [2024-11-09 19:23:12,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:23:12,108 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 90.66666666666667) internal successors, (272), 3 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 361 [2024-11-09 19:23:12,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:23:12,149 INFO L225 Difference]: With dead ends: 55784 [2024-11-09 19:23:12,149 INFO L226 Difference]: Without dead ends: 29191 [2024-11-09 19:23:12,167 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 365 GetRequests, 361 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-09 19:23:12,167 INFO L432 NwaCegarLoop]: 136 mSDtfsCounter, 210 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 706 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 210 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 766 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 706 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-09 19:23:12,167 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [210 Valid, 155 Invalid, 766 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 706 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-09 19:23:12,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29191 states. [2024-11-09 19:23:12,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29191 to 25674. [2024-11-09 19:23:12,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25674 states, 25673 states have (on average 1.7441280722938495) internal successors, (44777), 25673 states have internal predecessors, (44777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:23:12,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25674 states to 25674 states and 44777 transitions. [2024-11-09 19:23:12,429 INFO L78 Accepts]: Start accepts. Automaton has 25674 states and 44777 transitions. Word has length 361 [2024-11-09 19:23:12,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:23:12,430 INFO L471 AbstractCegarLoop]: Abstraction has 25674 states and 44777 transitions. [2024-11-09 19:23:12,430 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 90.66666666666667) internal successors, (272), 3 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:23:12,430 INFO L276 IsEmpty]: Start isEmpty. Operand 25674 states and 44777 transitions. [2024-11-09 19:23:12,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 379 [2024-11-09 19:23:12,438 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:23:12,439 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:23:12,451 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-09 19:23:12,639 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 19:23:12,640 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:23:12,640 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:23:12,640 INFO L85 PathProgramCache]: Analyzing trace with hash 962218838, now seen corresponding path program 1 times [2024-11-09 19:23:12,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:23:12,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77092611] [2024-11-09 19:23:12,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:23:12,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:23:12,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:23:13,837 INFO L134 CoverageAnalysis]: Checked inductivity of 441 backedges. 285 proven. 59 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2024-11-09 19:23:13,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:23:13,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77092611] [2024-11-09 19:23:13,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [77092611] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 19:23:13,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [938589476] [2024-11-09 19:23:13,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:23:13,838 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 19:23:13,838 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 19:23:13,840 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 19:23:13,841 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-09 19:23:14,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:23:14,020 INFO L255 TraceCheckSpWp]: Trace formula consists of 514 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-09 19:23:14,026 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 19:23:14,654 INFO L134 CoverageAnalysis]: Checked inductivity of 441 backedges. 204 proven. 140 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2024-11-09 19:23:14,654 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 19:23:15,176 INFO L134 CoverageAnalysis]: Checked inductivity of 441 backedges. 297 proven. 47 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2024-11-09 19:23:15,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [938589476] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 19:23:15,177 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 19:23:15,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 11 [2024-11-09 19:23:15,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607079379] [2024-11-09 19:23:15,178 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 19:23:15,179 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-09 19:23:15,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:23:15,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-09 19:23:15,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2024-11-09 19:23:15,181 INFO L87 Difference]: Start difference. First operand 25674 states and 44777 transitions. Second operand has 11 states, 11 states have (on average 76.54545454545455) internal successors, (842), 11 states have internal predecessors, (842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:23:21,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:23:21,206 INFO L93 Difference]: Finished difference Result 63011 states and 110167 transitions. [2024-11-09 19:23:21,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-09 19:23:21,207 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 76.54545454545455) internal successors, (842), 11 states have internal predecessors, (842), 0 states have call successors, (0), 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 378 [2024-11-09 19:23:21,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:23:21,248 INFO L225 Difference]: With dead ends: 63011 [2024-11-09 19:23:21,248 INFO L226 Difference]: Without dead ends: 36599 [2024-11-09 19:23:21,262 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 787 GetRequests, 764 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=193, Invalid=407, Unknown=0, NotChecked=0, Total=600 [2024-11-09 19:23:21,263 INFO L432 NwaCegarLoop]: 51 mSDtfsCounter, 5658 mSDsluCounter, 157 mSDsCounter, 0 mSdLazyCounter, 9219 mSolverCounterSat, 782 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5658 SdHoareTripleChecker+Valid, 208 SdHoareTripleChecker+Invalid, 10001 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 782 IncrementalHoareTripleChecker+Valid, 9219 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2024-11-09 19:23:21,263 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5658 Valid, 208 Invalid, 10001 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [782 Valid, 9219 Invalid, 0 Unknown, 0 Unchecked, 5.5s Time] [2024-11-09 19:23:21,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36599 states. [2024-11-09 19:23:21,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36599 to 27133. [2024-11-09 19:23:21,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27133 states, 27132 states have (on average 1.7349624060150375) internal successors, (47073), 27132 states have internal predecessors, (47073), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:23:21,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27133 states to 27133 states and 47073 transitions. [2024-11-09 19:23:21,576 INFO L78 Accepts]: Start accepts. Automaton has 27133 states and 47073 transitions. Word has length 378 [2024-11-09 19:23:21,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:23:21,576 INFO L471 AbstractCegarLoop]: Abstraction has 27133 states and 47073 transitions. [2024-11-09 19:23:21,577 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 76.54545454545455) internal successors, (842), 11 states have internal predecessors, (842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:23:21,577 INFO L276 IsEmpty]: Start isEmpty. Operand 27133 states and 47073 transitions. [2024-11-09 19:23:21,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 385 [2024-11-09 19:23:21,587 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:23:21,587 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:23:21,605 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-09 19:23:21,791 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 19:23:21,792 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:23:21,792 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:23:21,792 INFO L85 PathProgramCache]: Analyzing trace with hash -4773328, now seen corresponding path program 1 times [2024-11-09 19:23:21,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:23:21,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251152840] [2024-11-09 19:23:21,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:23:21,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:23:21,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:23:22,285 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 140 proven. 204 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2024-11-09 19:23:22,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:23:22,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251152840] [2024-11-09 19:23:22,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [251152840] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 19:23:22,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [968687067] [2024-11-09 19:23:22,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:23:22,286 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 19:23:22,286 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 19:23:22,288 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 19:23:22,289 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-09 19:23:22,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:23:22,434 INFO L255 TraceCheckSpWp]: Trace formula consists of 522 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-09 19:23:22,438 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 19:23:22,663 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 396 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2024-11-09 19:23:22,663 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 19:23:22,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [968687067] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:23:22,664 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 19:23:22,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2024-11-09 19:23:22,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958940111] [2024-11-09 19:23:22,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:23:22,665 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 19:23:22,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:23:22,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 19:23:22,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-09 19:23:22,666 INFO L87 Difference]: Start difference. First operand 27133 states and 47073 transitions. Second operand has 4 states, 4 states have (on average 84.5) internal successors, (338), 3 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:23:23,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:23:23,891 INFO L93 Difference]: Finished difference Result 54466 states and 94585 transitions. [2024-11-09 19:23:23,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 19:23:23,891 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 84.5) internal successors, (338), 3 states have internal predecessors, (338), 0 states have call successors, (0), 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 384 [2024-11-09 19:23:23,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:23:23,937 INFO L225 Difference]: With dead ends: 54466 [2024-11-09 19:23:23,937 INFO L226 Difference]: Without dead ends: 29187 [2024-11-09 19:23:23,956 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 387 GetRequests, 382 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-09 19:23:23,957 INFO L432 NwaCegarLoop]: 77 mSDtfsCounter, 437 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 1484 mSolverCounterSat, 168 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 437 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 1652 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 168 IncrementalHoareTripleChecker+Valid, 1484 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-09 19:23:23,957 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [437 Valid, 118 Invalid, 1652 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [168 Valid, 1484 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-09 19:23:23,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29187 states. [2024-11-09 19:23:24,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29187 to 27507. [2024-11-09 19:23:24,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27507 states, 27506 states have (on average 1.734385225041809) internal successors, (47706), 27506 states have internal predecessors, (47706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:23:24,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27507 states to 27507 states and 47706 transitions. [2024-11-09 19:23:24,243 INFO L78 Accepts]: Start accepts. Automaton has 27507 states and 47706 transitions. Word has length 384 [2024-11-09 19:23:24,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:23:24,243 INFO L471 AbstractCegarLoop]: Abstraction has 27507 states and 47706 transitions. [2024-11-09 19:23:24,243 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 84.5) internal successors, (338), 3 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:23:24,243 INFO L276 IsEmpty]: Start isEmpty. Operand 27507 states and 47706 transitions. [2024-11-09 19:23:24,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 421 [2024-11-09 19:23:24,253 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:23:24,253 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:23:24,268 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-09 19:23:24,457 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 19:23:24,458 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:23:24,458 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:23:24,458 INFO L85 PathProgramCache]: Analyzing trace with hash 668133513, now seen corresponding path program 1 times [2024-11-09 19:23:24,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:23:24,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [773656351] [2024-11-09 19:23:24,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:23:24,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:23:24,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:23:24,979 INFO L134 CoverageAnalysis]: Checked inductivity of 478 backedges. 140 proven. 231 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2024-11-09 19:23:24,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:23:24,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [773656351] [2024-11-09 19:23:24,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [773656351] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 19:23:24,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [143634640] [2024-11-09 19:23:24,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:23:24,981 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 19:23:24,981 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 19:23:24,982 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 19:23:24,985 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-09 19:23:25,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:23:25,174 INFO L255 TraceCheckSpWp]: Trace formula consists of 555 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-09 19:23:25,181 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 19:23:26,577 INFO L134 CoverageAnalysis]: Checked inductivity of 478 backedges. 246 proven. 232 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 19:23:26,577 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 19:23:29,098 INFO L134 CoverageAnalysis]: Checked inductivity of 478 backedges. 246 proven. 232 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 19:23:29,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [143634640] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 19:23:29,098 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 19:23:29,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 5] total 11 [2024-11-09 19:23:29,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313076784] [2024-11-09 19:23:29,099 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 19:23:29,100 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-09 19:23:29,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:23:29,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-09 19:23:29,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2024-11-09 19:23:29,101 INFO L87 Difference]: Start difference. First operand 27507 states and 47706 transitions. Second operand has 12 states, 12 states have (on average 81.33333333333333) internal successors, (976), 11 states have internal predecessors, (976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)