./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_QF_BV_s1269b_p3.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4a390ef5 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_QF_BV_s1269b_p3.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-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 64bit --witnessprinter.graph.data.programhash db87c07dbb7452fd246a98fbd617147a32e88270b5156b64dd08a046f6919e1f --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4a390ef-m [2024-10-24 05:00:19,282 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-24 05:00:19,351 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2024-10-24 05:00:19,357 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-24 05:00:19,360 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-24 05:00:19,388 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-24 05:00:19,389 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-24 05:00:19,390 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-24 05:00:19,390 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-24 05:00:19,394 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-24 05:00:19,394 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-24 05:00:19,394 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-24 05:00:19,395 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-24 05:00:19,395 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-24 05:00:19,395 INFO L153 SettingsManager]: * Use SBE=true [2024-10-24 05:00:19,396 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-24 05:00:19,396 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-24 05:00:19,396 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-24 05:00:19,396 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-24 05:00:19,396 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-24 05:00:19,397 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-24 05:00:19,399 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-24 05:00:19,399 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-24 05:00:19,399 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-24 05:00:19,399 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-24 05:00:19,400 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-24 05:00:19,400 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-24 05:00:19,400 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-24 05:00:19,401 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-24 05:00:19,401 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 05:00:19,401 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-24 05:00:19,402 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-24 05:00:19,402 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-24 05:00:19,402 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-24 05:00:19,403 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-24 05:00:19,403 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-24 05:00:19,403 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-24 05:00:19,403 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-24 05:00:19,404 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-24 05:00:19,404 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> db87c07dbb7452fd246a98fbd617147a32e88270b5156b64dd08a046f6919e1f [2024-10-24 05:00:19,651 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-24 05:00:19,712 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-24 05:00:19,718 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-24 05:00:19,720 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-24 05:00:19,721 INFO L274 PluginConnector]: CDTParser initialized [2024-10-24 05:00:19,723 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_QF_BV_s1269b_p3.c [2024-10-24 05:00:21,091 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-24 05:00:21,314 INFO L384 CDTParser]: Found 1 translation units. [2024-10-24 05:00:21,315 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_QF_BV_s1269b_p3.c [2024-10-24 05:00:21,330 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b83b51d58/3532fad61b35443a8e8a8bbc19af80b7/FLAG25a2457f8 [2024-10-24 05:00:21,347 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b83b51d58/3532fad61b35443a8e8a8bbc19af80b7 [2024-10-24 05:00:21,351 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-24 05:00:21,353 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-24 05:00:21,355 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-24 05:00:21,356 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-24 05:00:21,362 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-24 05:00:21,362 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 05:00:21" (1/1) ... [2024-10-24 05:00:21,365 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f5fbe5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:00:21, skipping insertion in model container [2024-10-24 05:00:21,365 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 05:00:21" (1/1) ... [2024-10-24 05:00:21,398 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-24 05:00:21,584 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_QF_BV_s1269b_p3.c[1259,1272] [2024-10-24 05:00:21,647 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 05:00:21,656 INFO L200 MainTranslator]: Completed pre-run [2024-10-24 05:00:21,665 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_QF_BV_s1269b_p3.c[1259,1272] [2024-10-24 05:00:21,720 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 05:00:21,742 INFO L204 MainTranslator]: Completed translation [2024-10-24 05:00:21,742 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:00:21 WrapperNode [2024-10-24 05:00:21,743 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-24 05:00:21,744 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-24 05:00:21,744 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-24 05:00:21,744 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-24 05:00:21,751 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:00:21" (1/1) ... [2024-10-24 05:00:21,762 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:00:21" (1/1) ... [2024-10-24 05:00:21,828 INFO L138 Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 428 [2024-10-24 05:00:21,828 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-24 05:00:21,829 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-24 05:00:21,829 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-24 05:00:21,829 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-24 05:00:21,845 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:00:21" (1/1) ... [2024-10-24 05:00:21,845 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:00:21" (1/1) ... [2024-10-24 05:00:21,854 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:00:21" (1/1) ... [2024-10-24 05:00:21,885 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]. [2024-10-24 05:00:21,885 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:00:21" (1/1) ... [2024-10-24 05:00:21,885 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:00:21" (1/1) ... [2024-10-24 05:00:21,904 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:00:21" (1/1) ... [2024-10-24 05:00:21,908 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:00:21" (1/1) ... [2024-10-24 05:00:21,914 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:00:21" (1/1) ... [2024-10-24 05:00:21,920 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:00:21" (1/1) ... [2024-10-24 05:00:21,929 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-24 05:00:21,931 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-24 05:00:21,931 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-24 05:00:21,931 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-24 05:00:21,932 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:00:21" (1/1) ... [2024-10-24 05:00:21,937 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 05:00:21,947 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 05:00:21,963 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) [2024-10-24 05:00:21,969 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 [2024-10-24 05:00:22,015 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-24 05:00:22,016 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-24 05:00:22,016 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-24 05:00:22,016 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-24 05:00:22,120 INFO L238 CfgBuilder]: Building ICFG [2024-10-24 05:00:22,122 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-24 05:00:22,832 INFO L? ?]: Removed 211 outVars from TransFormulas that were not future-live. [2024-10-24 05:00:22,833 INFO L287 CfgBuilder]: Performing block encoding [2024-10-24 05:00:22,865 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-24 05:00:22,865 INFO L314 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-24 05:00:22,866 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 05:00:22 BoogieIcfgContainer [2024-10-24 05:00:22,866 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-24 05:00:22,868 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-24 05:00:22,868 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-24 05:00:22,871 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-24 05:00:22,872 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 05:00:21" (1/3) ... [2024-10-24 05:00:22,873 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16158941 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 05:00:22, skipping insertion in model container [2024-10-24 05:00:22,873 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:00:21" (2/3) ... [2024-10-24 05:00:22,873 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16158941 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 05:00:22, skipping insertion in model container [2024-10-24 05:00:22,873 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 05:00:22" (3/3) ... [2024-10-24 05:00:22,875 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.vis_QF_BV_s1269b_p3.c [2024-10-24 05:00:22,888 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-24 05:00:22,889 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-24 05:00:22,943 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-24 05:00:22,950 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;@1452dc57, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-24 05:00:22,950 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-24 05:00:22,956 INFO L276 IsEmpty]: Start isEmpty. Operand has 107 states, 105 states have (on average 1.5047619047619047) internal successors, (158), 106 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 05:00:22,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-10-24 05:00:22,964 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 05:00:22,965 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] [2024-10-24 05:00:22,965 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 05:00:22,971 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 05:00:22,973 INFO L85 PathProgramCache]: Analyzing trace with hash 1873224777, now seen corresponding path program 1 times [2024-10-24 05:00:22,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 05:00:22,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966399326] [2024-10-24 05:00:22,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 05:00:22,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 05:00:23,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 05:00:23,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 05:00:23,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 05:00:23,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966399326] [2024-10-24 05:00:23,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [966399326] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 05:00:23,542 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 05:00:23,542 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 05:00:23,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347801645] [2024-10-24 05:00:23,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 05:00:23,548 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 05:00:23,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 05:00:23,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 05:00:23,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 05:00:23,575 INFO L87 Difference]: Start difference. First operand has 107 states, 105 states have (on average 1.5047619047619047) internal successors, (158), 106 states have internal predecessors, (158), 0 states have call successors, (0), 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 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 05:00:23,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 05:00:23,659 INFO L93 Difference]: Finished difference Result 198 states and 294 transitions. [2024-10-24 05:00:23,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 05:00:23,661 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 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 22 [2024-10-24 05:00:23,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 05:00:23,670 INFO L225 Difference]: With dead ends: 198 [2024-10-24 05:00:23,670 INFO L226 Difference]: Without dead ends: 108 [2024-10-24 05:00:23,674 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 05:00:23,679 INFO L432 NwaCegarLoop]: 153 mSDtfsCounter, 0 mSDsluCounter, 301 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 454 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 05:00:23,680 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 454 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 05:00:23,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2024-10-24 05:00:23,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2024-10-24 05:00:23,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 107 states have (on average 1.4766355140186915) internal successors, (158), 107 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 05:00:23,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 158 transitions. [2024-10-24 05:00:23,725 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 158 transitions. Word has length 22 [2024-10-24 05:00:23,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 05:00:23,726 INFO L471 AbstractCegarLoop]: Abstraction has 108 states and 158 transitions. [2024-10-24 05:00:23,726 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 05:00:23,726 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 158 transitions. [2024-10-24 05:00:23,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-10-24 05:00:23,727 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 05:00:23,727 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] [2024-10-24 05:00:23,727 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-24 05:00:23,728 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 05:00:23,730 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 05:00:23,730 INFO L85 PathProgramCache]: Analyzing trace with hash -2057878787, now seen corresponding path program 1 times [2024-10-24 05:00:23,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 05:00:23,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988399127] [2024-10-24 05:00:23,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 05:00:23,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 05:00:23,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 05:00:23,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 05:00:23,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 05:00:23,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988399127] [2024-10-24 05:00:23,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1988399127] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 05:00:23,888 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 05:00:23,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 05:00:23,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320698347] [2024-10-24 05:00:23,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 05:00:23,892 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 05:00:23,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 05:00:23,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 05:00:23,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 05:00:23,896 INFO L87 Difference]: Start difference. First operand 108 states and 158 transitions. Second operand has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 05:00:23,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 05:00:23,935 INFO L93 Difference]: Finished difference Result 201 states and 294 transitions. [2024-10-24 05:00:23,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 05:00:23,939 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 0 states have call successors, (0), 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 23 [2024-10-24 05:00:23,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 05:00:23,940 INFO L225 Difference]: With dead ends: 201 [2024-10-24 05:00:23,940 INFO L226 Difference]: Without dead ends: 110 [2024-10-24 05:00:23,941 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 05:00:23,941 INFO L432 NwaCegarLoop]: 153 mSDtfsCounter, 0 mSDsluCounter, 298 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 451 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 05:00:23,942 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 451 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 05:00:23,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2024-10-24 05:00:23,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 110. [2024-10-24 05:00:23,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 109 states have (on average 1.4678899082568808) internal successors, (160), 109 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 05:00:23,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 160 transitions. [2024-10-24 05:00:23,956 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 160 transitions. Word has length 23 [2024-10-24 05:00:23,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 05:00:23,957 INFO L471 AbstractCegarLoop]: Abstraction has 110 states and 160 transitions. [2024-10-24 05:00:23,957 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 05:00:23,957 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 160 transitions. [2024-10-24 05:00:23,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-10-24 05:00:23,958 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 05:00:23,958 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] [2024-10-24 05:00:23,959 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-24 05:00:23,959 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 05:00:23,959 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 05:00:23,959 INFO L85 PathProgramCache]: Analyzing trace with hash -467698782, now seen corresponding path program 1 times [2024-10-24 05:00:23,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 05:00:23,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117054818] [2024-10-24 05:00:23,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 05:00:23,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 05:00:24,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 05:00:24,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 05:00:24,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 05:00:24,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2117054818] [2024-10-24 05:00:24,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2117054818] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 05:00:24,741 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 05:00:24,741 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-24 05:00:24,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007959180] [2024-10-24 05:00:24,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 05:00:24,748 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-24 05:00:24,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 05:00:24,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-24 05:00:24,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-10-24 05:00:24,749 INFO L87 Difference]: Start difference. First operand 110 states and 160 transitions. Second operand has 9 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 8 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 05:00:25,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 05:00:25,001 INFO L93 Difference]: Finished difference Result 218 states and 318 transitions. [2024-10-24 05:00:25,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-24 05:00:25,002 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 8 states have internal predecessors, (24), 0 states have call successors, (0), 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 24 [2024-10-24 05:00:25,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 05:00:25,004 INFO L225 Difference]: With dead ends: 218 [2024-10-24 05:00:25,004 INFO L226 Difference]: Without dead ends: 125 [2024-10-24 05:00:25,005 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-10-24 05:00:25,006 INFO L432 NwaCegarLoop]: 141 mSDtfsCounter, 36 mSDsluCounter, 945 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 1086 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 05:00:25,006 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 1086 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 05:00:25,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2024-10-24 05:00:25,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 119. [2024-10-24 05:00:25,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 118 states have (on average 1.4576271186440677) internal successors, (172), 118 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 05:00:25,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 172 transitions. [2024-10-24 05:00:25,015 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 172 transitions. Word has length 24 [2024-10-24 05:00:25,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 05:00:25,015 INFO L471 AbstractCegarLoop]: Abstraction has 119 states and 172 transitions. [2024-10-24 05:00:25,016 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 8 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 05:00:25,016 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 172 transitions. [2024-10-24 05:00:25,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-10-24 05:00:25,016 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 05:00:25,017 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] [2024-10-24 05:00:25,017 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-24 05:00:25,017 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 05:00:25,018 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 05:00:25,018 INFO L85 PathProgramCache]: Analyzing trace with hash -704873436, now seen corresponding path program 1 times [2024-10-24 05:00:25,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 05:00:25,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010228770] [2024-10-24 05:00:25,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 05:00:25,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 05:00:25,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 05:00:25,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 05:00:25,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 05:00:25,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010228770] [2024-10-24 05:00:25,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1010228770] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 05:00:25,400 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 05:00:25,400 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-24 05:00:25,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275196030] [2024-10-24 05:00:25,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 05:00:25,402 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-24 05:00:25,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 05:00:25,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-24 05:00:25,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-10-24 05:00:25,404 INFO L87 Difference]: Start difference. First operand 119 states and 172 transitions. Second operand has 9 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 05:00:25,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 05:00:25,590 INFO L93 Difference]: Finished difference Result 303 states and 439 transitions. [2024-10-24 05:00:25,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-24 05:00:25,590 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 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 25 [2024-10-24 05:00:25,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 05:00:25,592 INFO L225 Difference]: With dead ends: 303 [2024-10-24 05:00:25,592 INFO L226 Difference]: Without dead ends: 210 [2024-10-24 05:00:25,593 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2024-10-24 05:00:25,594 INFO L432 NwaCegarLoop]: 142 mSDtfsCounter, 143 mSDsluCounter, 962 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 1104 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 05:00:25,594 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [143 Valid, 1104 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 05:00:25,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2024-10-24 05:00:25,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 127. [2024-10-24 05:00:25,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 126 states have (on average 1.4523809523809523) internal successors, (183), 126 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 05:00:25,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 183 transitions. [2024-10-24 05:00:25,603 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 183 transitions. Word has length 25 [2024-10-24 05:00:25,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 05:00:25,603 INFO L471 AbstractCegarLoop]: Abstraction has 127 states and 183 transitions. [2024-10-24 05:00:25,603 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 05:00:25,604 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 183 transitions. [2024-10-24 05:00:25,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-10-24 05:00:25,608 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 05:00:25,608 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] [2024-10-24 05:00:25,608 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-24 05:00:25,608 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 05:00:25,609 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 05:00:25,609 INFO L85 PathProgramCache]: Analyzing trace with hash -559703317, now seen corresponding path program 1 times [2024-10-24 05:00:25,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 05:00:25,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112683392] [2024-10-24 05:00:25,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 05:00:25,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 05:00:25,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 05:00:25,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 05:00:25,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 05:00:25,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112683392] [2024-10-24 05:00:25,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1112683392] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 05:00:25,921 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 05:00:25,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-24 05:00:25,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325418261] [2024-10-24 05:00:25,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 05:00:25,922 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-24 05:00:25,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 05:00:25,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-24 05:00:25,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-24 05:00:25,923 INFO L87 Difference]: Start difference. First operand 127 states and 183 transitions. Second operand has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 6 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 05:00:26,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 05:00:26,051 INFO L93 Difference]: Finished difference Result 284 states and 409 transitions. [2024-10-24 05:00:26,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-24 05:00:26,053 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 6 states have internal predecessors, (25), 0 states have call successors, (0), 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 25 [2024-10-24 05:00:26,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 05:00:26,054 INFO L225 Difference]: With dead ends: 284 [2024-10-24 05:00:26,054 INFO L226 Difference]: Without dead ends: 176 [2024-10-24 05:00:26,054 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-10-24 05:00:26,057 INFO L432 NwaCegarLoop]: 144 mSDtfsCounter, 107 mSDsluCounter, 687 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 831 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 05:00:26,057 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 831 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 05:00:26,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2024-10-24 05:00:26,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 119. [2024-10-24 05:00:26,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 118 states have (on average 1.4322033898305084) internal successors, (169), 118 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 05:00:26,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 169 transitions. [2024-10-24 05:00:26,072 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 169 transitions. Word has length 25 [2024-10-24 05:00:26,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 05:00:26,072 INFO L471 AbstractCegarLoop]: Abstraction has 119 states and 169 transitions. [2024-10-24 05:00:26,072 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 6 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 05:00:26,072 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 169 transitions. [2024-10-24 05:00:26,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-10-24 05:00:26,074 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 05:00:26,074 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 05:00:26,074 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-24 05:00:26,078 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 05:00:26,079 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 05:00:26,079 INFO L85 PathProgramCache]: Analyzing trace with hash -1604865220, now seen corresponding path program 1 times [2024-10-24 05:00:26,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 05:00:26,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295955347] [2024-10-24 05:00:26,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 05:00:26,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 05:00:26,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 05:00:26,626 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 05:00:26,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 05:00:26,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295955347] [2024-10-24 05:00:26,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [295955347] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 05:00:26,627 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 05:00:26,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-24 05:00:26,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047803481] [2024-10-24 05:00:26,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 05:00:26,628 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-24 05:00:26,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 05:00:26,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-24 05:00:26,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-10-24 05:00:26,629 INFO L87 Difference]: Start difference. First operand 119 states and 169 transitions. Second operand has 8 states, 8 states have (on average 8.75) internal successors, (70), 7 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 05:00:26,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 05:00:26,755 INFO L93 Difference]: Finished difference Result 276 states and 398 transitions. [2024-10-24 05:00:26,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-24 05:00:26,755 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.75) internal successors, (70), 7 states have internal predecessors, (70), 0 states have call successors, (0), 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 70 [2024-10-24 05:00:26,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 05:00:26,757 INFO L225 Difference]: With dead ends: 276 [2024-10-24 05:00:26,757 INFO L226 Difference]: Without dead ends: 183 [2024-10-24 05:00:26,757 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2024-10-24 05:00:26,758 INFO L432 NwaCegarLoop]: 142 mSDtfsCounter, 116 mSDsluCounter, 702 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 844 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 05:00:26,759 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [116 Valid, 844 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 05:00:26,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2024-10-24 05:00:26,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 136. [2024-10-24 05:00:26,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 135 states have (on average 1.4148148148148147) internal successors, (191), 135 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 05:00:26,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 191 transitions. [2024-10-24 05:00:26,765 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 191 transitions. Word has length 70 [2024-10-24 05:00:26,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 05:00:26,765 INFO L471 AbstractCegarLoop]: Abstraction has 136 states and 191 transitions. [2024-10-24 05:00:26,766 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.75) internal successors, (70), 7 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 05:00:26,766 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 191 transitions. [2024-10-24 05:00:26,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-10-24 05:00:26,768 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 05:00:26,768 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 05:00:26,768 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-24 05:00:26,768 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 05:00:26,769 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 05:00:26,769 INFO L85 PathProgramCache]: Analyzing trace with hash 1944978338, now seen corresponding path program 1 times [2024-10-24 05:00:26,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 05:00:26,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [722591734] [2024-10-24 05:00:26,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 05:00:26,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 05:00:26,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 05:00:27,334 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 05:00:27,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 05:00:27,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [722591734] [2024-10-24 05:00:27,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [722591734] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 05:00:27,335 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 05:00:27,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-10-24 05:00:27,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944324133] [2024-10-24 05:00:27,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 05:00:27,336 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-24 05:00:27,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 05:00:27,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-24 05:00:27,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-10-24 05:00:27,339 INFO L87 Difference]: Start difference. First operand 136 states and 191 transitions. Second operand has 10 states, 10 states have (on average 7.1) internal successors, (71), 10 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 05:00:27,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 05:00:27,580 INFO L93 Difference]: Finished difference Result 381 states and 548 transitions. [2024-10-24 05:00:27,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-10-24 05:00:27,581 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.1) internal successors, (71), 10 states have internal predecessors, (71), 0 states have call successors, (0), 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 71 [2024-10-24 05:00:27,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 05:00:27,583 INFO L225 Difference]: With dead ends: 381 [2024-10-24 05:00:27,583 INFO L226 Difference]: Without dead ends: 288 [2024-10-24 05:00:27,583 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2024-10-24 05:00:27,584 INFO L432 NwaCegarLoop]: 231 mSDtfsCounter, 209 mSDsluCounter, 1411 mSDsCounter, 0 mSdLazyCounter, 168 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 209 SdHoareTripleChecker+Valid, 1642 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 05:00:27,584 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [209 Valid, 1642 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 168 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 05:00:27,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2024-10-24 05:00:27,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 173. [2024-10-24 05:00:27,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 172 states have (on average 1.4186046511627908) internal successors, (244), 172 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 05:00:27,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 244 transitions. [2024-10-24 05:00:27,601 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 244 transitions. Word has length 71 [2024-10-24 05:00:27,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 05:00:27,601 INFO L471 AbstractCegarLoop]: Abstraction has 173 states and 244 transitions. [2024-10-24 05:00:27,601 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.1) internal successors, (71), 10 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 05:00:27,601 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 244 transitions. [2024-10-24 05:00:27,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-10-24 05:00:27,603 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 05:00:27,607 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-24 05:00:27,607 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-24 05:00:27,607 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 05:00:27,608 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 05:00:27,608 INFO L85 PathProgramCache]: Analyzing trace with hash 1218843371, now seen corresponding path program 1 times [2024-10-24 05:00:27,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 05:00:27,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381874932] [2024-10-24 05:00:27,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 05:00:27,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 05:00:27,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 05:00:28,143 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 05:00:28,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 05:00:28,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381874932] [2024-10-24 05:00:28,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1381874932] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 05:00:28,144 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 05:00:28,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-24 05:00:28,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115316563] [2024-10-24 05:00:28,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 05:00:28,146 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-24 05:00:28,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 05:00:28,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-24 05:00:28,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-10-24 05:00:28,147 INFO L87 Difference]: Start difference. First operand 173 states and 244 transitions. Second operand has 9 states, 9 states have (on average 8.0) internal successors, (72), 8 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 05:00:28,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 05:00:28,288 INFO L93 Difference]: Finished difference Result 389 states and 560 transitions. [2024-10-24 05:00:28,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-24 05:00:28,289 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.0) internal successors, (72), 8 states have internal predecessors, (72), 0 states have call successors, (0), 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 72 [2024-10-24 05:00:28,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 05:00:28,291 INFO L225 Difference]: With dead ends: 389 [2024-10-24 05:00:28,291 INFO L226 Difference]: Without dead ends: 259 [2024-10-24 05:00:28,291 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2024-10-24 05:00:28,293 INFO L432 NwaCegarLoop]: 141 mSDtfsCounter, 111 mSDsluCounter, 823 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 964 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 05:00:28,293 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [111 Valid, 964 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 05:00:28,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2024-10-24 05:00:28,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 191. [2024-10-24 05:00:28,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 190 states have (on average 1.4157894736842105) internal successors, (269), 190 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 05:00:28,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 269 transitions. [2024-10-24 05:00:28,305 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 269 transitions. Word has length 72 [2024-10-24 05:00:28,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 05:00:28,306 INFO L471 AbstractCegarLoop]: Abstraction has 191 states and 269 transitions. [2024-10-24 05:00:28,306 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.0) internal successors, (72), 8 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 05:00:28,306 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 269 transitions. [2024-10-24 05:00:28,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-10-24 05:00:28,308 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 05:00:28,308 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 05:00:28,308 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-24 05:00:28,308 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 05:00:28,309 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 05:00:28,309 INFO L85 PathProgramCache]: Analyzing trace with hash -1821612008, now seen corresponding path program 1 times [2024-10-24 05:00:28,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 05:00:28,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373037897] [2024-10-24 05:00:28,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 05:00:28,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 05:00:28,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 05:00:28,818 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 05:00:28,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 05:00:28,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373037897] [2024-10-24 05:00:28,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [373037897] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 05:00:28,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1901536773] [2024-10-24 05:00:28,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 05:00:28,821 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 05:00:28,821 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 05:00:28,823 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) [2024-10-24 05:00:28,825 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-24 05:00:29,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 05:00:29,051 INFO L255 TraceCheckSpWp]: Trace formula consists of 398 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-10-24 05:00:29,067 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 05:00:29,430 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 05:00:29,430 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 05:00:29,931 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 05:00:29,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1901536773] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 05:00:29,932 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 05:00:29,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11, 11] total 29 [2024-10-24 05:00:29,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124108806] [2024-10-24 05:00:29,933 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 05:00:29,933 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-10-24 05:00:29,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 05:00:29,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-10-24 05:00:29,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=792, Unknown=0, NotChecked=0, Total=870 [2024-10-24 05:00:29,935 INFO L87 Difference]: Start difference. First operand 191 states and 269 transitions. Second operand has 30 states, 30 states have (on average 6.7) internal successors, (201), 29 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 05:00:30,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 05:00:30,742 INFO L93 Difference]: Finished difference Result 481 states and 693 transitions. [2024-10-24 05:00:30,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-10-24 05:00:30,743 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 6.7) internal successors, (201), 29 states have internal predecessors, (201), 0 states have call successors, (0), 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 72 [2024-10-24 05:00:30,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 05:00:30,745 INFO L225 Difference]: With dead ends: 481 [2024-10-24 05:00:30,746 INFO L226 Difference]: Without dead ends: 351 [2024-10-24 05:00:30,747 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 207 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=174, Invalid=1632, Unknown=0, NotChecked=0, Total=1806 [2024-10-24 05:00:30,747 INFO L432 NwaCegarLoop]: 136 mSDtfsCounter, 140 mSDsluCounter, 3403 mSDsCounter, 0 mSdLazyCounter, 684 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 3539 SdHoareTripleChecker+Invalid, 697 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 684 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-24 05:00:30,748 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [140 Valid, 3539 Invalid, 697 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 684 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-24 05:00:30,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 351 states. [2024-10-24 05:00:30,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 351 to 344. [2024-10-24 05:00:30,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 344 states, 343 states have (on average 1.4198250728862973) internal successors, (487), 343 states have internal predecessors, (487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 05:00:30,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344 states to 344 states and 487 transitions. [2024-10-24 05:00:30,757 INFO L78 Accepts]: Start accepts. Automaton has 344 states and 487 transitions. Word has length 72 [2024-10-24 05:00:30,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 05:00:30,758 INFO L471 AbstractCegarLoop]: Abstraction has 344 states and 487 transitions. [2024-10-24 05:00:30,758 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 6.7) internal successors, (201), 29 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 05:00:30,758 INFO L276 IsEmpty]: Start isEmpty. Operand 344 states and 487 transitions. [2024-10-24 05:00:30,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-10-24 05:00:30,759 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 05:00:30,760 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-24 05:00:30,778 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-24 05:00:30,960 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 05:00:30,961 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 05:00:30,961 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 05:00:30,961 INFO L85 PathProgramCache]: Analyzing trace with hash 273489518, now seen corresponding path program 1 times [2024-10-24 05:00:30,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 05:00:30,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879371601] [2024-10-24 05:00:30,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 05:00:30,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 05:00:31,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 05:00:31,985 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 05:00:31,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 05:00:31,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879371601] [2024-10-24 05:00:31,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1879371601] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 05:00:31,986 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 05:00:31,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-10-24 05:00:31,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223738741] [2024-10-24 05:00:31,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 05:00:31,987 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-24 05:00:31,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 05:00:31,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-24 05:00:31,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-10-24 05:00:31,988 INFO L87 Difference]: Start difference. First operand 344 states and 487 transitions. Second operand has 13 states, 13 states have (on average 5.615384615384615) internal successors, (73), 12 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 05:00:32,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 05:00:32,394 INFO L93 Difference]: Finished difference Result 833 states and 1195 transitions. [2024-10-24 05:00:32,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-10-24 05:00:32,395 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.615384615384615) internal successors, (73), 12 states have internal predecessors, (73), 0 states have call successors, (0), 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 73 [2024-10-24 05:00:32,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 05:00:32,397 INFO L225 Difference]: With dead ends: 833 [2024-10-24 05:00:32,398 INFO L226 Difference]: Without dead ends: 550 [2024-10-24 05:00:32,398 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=95, Invalid=457, Unknown=0, NotChecked=0, Total=552 [2024-10-24 05:00:32,399 INFO L432 NwaCegarLoop]: 126 mSDtfsCounter, 214 mSDsluCounter, 956 mSDsCounter, 0 mSdLazyCounter, 301 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 214 SdHoareTripleChecker+Valid, 1082 SdHoareTripleChecker+Invalid, 304 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 301 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-24 05:00:32,399 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [214 Valid, 1082 Invalid, 304 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 301 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-24 05:00:32,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 550 states. [2024-10-24 05:00:32,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 550 to 384. [2024-10-24 05:00:32,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 384 states, 383 states have (on average 1.4281984334203655) internal successors, (547), 383 states have internal predecessors, (547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 05:00:32,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 547 transitions. [2024-10-24 05:00:32,408 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 547 transitions. Word has length 73 [2024-10-24 05:00:32,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 05:00:32,408 INFO L471 AbstractCegarLoop]: Abstraction has 384 states and 547 transitions. [2024-10-24 05:00:32,408 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.615384615384615) internal successors, (73), 12 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 05:00:32,408 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 547 transitions. [2024-10-24 05:00:32,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-10-24 05:00:32,409 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 05:00:32,409 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-24 05:00:32,409 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-24 05:00:32,410 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 05:00:32,410 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 05:00:32,410 INFO L85 PathProgramCache]: Analyzing trace with hash 153916285, now seen corresponding path program 1 times [2024-10-24 05:00:32,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 05:00:32,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319850736] [2024-10-24 05:00:32,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 05:00:32,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 05:00:32,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 05:00:32,902 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 05:00:32,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 05:00:32,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1319850736] [2024-10-24 05:00:32,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1319850736] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 05:00:32,903 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 05:00:32,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 05:00:32,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262527957] [2024-10-24 05:00:32,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 05:00:32,904 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 05:00:32,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 05:00:32,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 05:00:32,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 05:00:32,905 INFO L87 Difference]: Start difference. First operand 384 states and 547 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 05:00:32,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 05:00:32,921 INFO L93 Difference]: Finished difference Result 667 states and 953 transitions. [2024-10-24 05:00:32,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 05:00:32,922 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 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 74 [2024-10-24 05:00:32,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 05:00:32,924 INFO L225 Difference]: With dead ends: 667 [2024-10-24 05:00:32,924 INFO L226 Difference]: Without dead ends: 344 [2024-10-24 05:00:32,924 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 [2024-10-24 05:00:32,926 INFO L432 NwaCegarLoop]: 150 mSDtfsCounter, 2 mSDsluCounter, 148 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 298 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 05:00:32,926 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 298 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 05:00:32,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344 states. [2024-10-24 05:00:32,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344 to 344. [2024-10-24 05:00:32,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 344 states, 343 states have (on average 1.4081632653061225) internal successors, (483), 343 states have internal predecessors, (483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 05:00:32,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344 states to 344 states and 483 transitions. [2024-10-24 05:00:32,933 INFO L78 Accepts]: Start accepts. Automaton has 344 states and 483 transitions. Word has length 74 [2024-10-24 05:00:32,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 05:00:32,934 INFO L471 AbstractCegarLoop]: Abstraction has 344 states and 483 transitions. [2024-10-24 05:00:32,934 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 05:00:32,934 INFO L276 IsEmpty]: Start isEmpty. Operand 344 states and 483 transitions. [2024-10-24 05:00:32,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-10-24 05:00:32,935 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 05:00:32,935 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 05:00:32,935 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-24 05:00:32,935 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 05:00:32,936 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 05:00:32,936 INFO L85 PathProgramCache]: Analyzing trace with hash -874938915, now seen corresponding path program 1 times [2024-10-24 05:00:32,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 05:00:32,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210006111] [2024-10-24 05:00:32,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 05:00:32,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 05:00:33,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 05:00:33,589 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 05:00:33,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 05:00:33,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1210006111] [2024-10-24 05:00:33,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1210006111] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 05:00:33,590 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 05:00:33,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-10-24 05:00:33,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455105100] [2024-10-24 05:00:33,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 05:00:33,591 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-24 05:00:33,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 05:00:33,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-24 05:00:33,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2024-10-24 05:00:33,592 INFO L87 Difference]: Start difference. First operand 344 states and 483 transitions. Second operand has 11 states, 11 states have (on average 6.7272727272727275) internal successors, (74), 11 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 05:00:33,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 05:00:33,824 INFO L93 Difference]: Finished difference Result 848 states and 1204 transitions. [2024-10-24 05:00:33,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-24 05:00:33,825 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.7272727272727275) internal successors, (74), 11 states have internal predecessors, (74), 0 states have call successors, (0), 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 74 [2024-10-24 05:00:33,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 05:00:33,828 INFO L225 Difference]: With dead ends: 848 [2024-10-24 05:00:33,828 INFO L226 Difference]: Without dead ends: 565 [2024-10-24 05:00:33,829 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2024-10-24 05:00:33,830 INFO L432 NwaCegarLoop]: 239 mSDtfsCounter, 152 mSDsluCounter, 2026 mSDsCounter, 0 mSdLazyCounter, 208 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 2265 SdHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 05:00:33,830 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [152 Valid, 2265 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 208 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 05:00:33,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 565 states. [2024-10-24 05:00:33,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 565 to 372. [2024-10-24 05:00:33,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 372 states, 371 states have (on average 1.4070080862533694) internal successors, (522), 371 states have internal predecessors, (522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 05:00:33,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 372 states to 372 states and 522 transitions. [2024-10-24 05:00:33,839 INFO L78 Accepts]: Start accepts. Automaton has 372 states and 522 transitions. Word has length 74 [2024-10-24 05:00:33,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 05:00:33,839 INFO L471 AbstractCegarLoop]: Abstraction has 372 states and 522 transitions. [2024-10-24 05:00:33,839 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.7272727272727275) internal successors, (74), 11 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 05:00:33,840 INFO L276 IsEmpty]: Start isEmpty. Operand 372 states and 522 transitions. [2024-10-24 05:00:33,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-10-24 05:00:33,840 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 05:00:33,841 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 05:00:33,841 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-24 05:00:33,841 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 05:00:33,841 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 05:00:33,841 INFO L85 PathProgramCache]: Analyzing trace with hash 416549022, now seen corresponding path program 1 times [2024-10-24 05:00:33,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 05:00:33,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981798879] [2024-10-24 05:00:33,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 05:00:33,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 05:00:33,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 05:00:34,331 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 05:00:34,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 05:00:34,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981798879] [2024-10-24 05:00:34,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [981798879] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 05:00:34,331 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 05:00:34,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-10-24 05:00:34,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659053589] [2024-10-24 05:00:34,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 05:00:34,332 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-24 05:00:34,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 05:00:34,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-24 05:00:34,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-10-24 05:00:34,333 INFO L87 Difference]: Start difference. First operand 372 states and 522 transitions. Second operand has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 05:00:34,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 05:00:34,614 INFO L93 Difference]: Finished difference Result 1069 states and 1514 transitions. [2024-10-24 05:00:34,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-24 05:00:34,614 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 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 75 [2024-10-24 05:00:34,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 05:00:34,617 INFO L225 Difference]: With dead ends: 1069 [2024-10-24 05:00:34,617 INFO L226 Difference]: Without dead ends: 758 [2024-10-24 05:00:34,618 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2024-10-24 05:00:34,619 INFO L432 NwaCegarLoop]: 254 mSDtfsCounter, 149 mSDsluCounter, 1864 mSDsCounter, 0 mSdLazyCounter, 279 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 2118 SdHoareTripleChecker+Invalid, 280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 279 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-24 05:00:34,619 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [149 Valid, 2118 Invalid, 280 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 279 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-24 05:00:34,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 758 states. [2024-10-24 05:00:34,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 758 to 488. [2024-10-24 05:00:34,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 488 states, 487 states have (on average 1.408624229979466) internal successors, (686), 487 states have internal predecessors, (686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 05:00:34,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 488 states to 488 states and 686 transitions. [2024-10-24 05:00:34,633 INFO L78 Accepts]: Start accepts. Automaton has 488 states and 686 transitions. Word has length 75 [2024-10-24 05:00:34,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 05:00:34,633 INFO L471 AbstractCegarLoop]: Abstraction has 488 states and 686 transitions. [2024-10-24 05:00:34,633 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 05:00:34,633 INFO L276 IsEmpty]: Start isEmpty. Operand 488 states and 686 transitions. [2024-10-24 05:00:34,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-10-24 05:00:34,634 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 05:00:34,634 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-24 05:00:34,635 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-10-24 05:00:34,635 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 05:00:34,635 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 05:00:34,635 INFO L85 PathProgramCache]: Analyzing trace with hash -1087626770, now seen corresponding path program 1 times [2024-10-24 05:00:34,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 05:00:34,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117655925] [2024-10-24 05:00:34,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 05:00:34,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 05:00:34,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 05:00:35,615 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 05:00:35,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 05:00:35,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2117655925] [2024-10-24 05:00:35,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2117655925] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 05:00:35,616 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 05:00:35,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2024-10-24 05:00:35,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581084833] [2024-10-24 05:00:35,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 05:00:35,617 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-10-24 05:00:35,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 05:00:35,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-10-24 05:00:35,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=236, Unknown=0, NotChecked=0, Total=272 [2024-10-24 05:00:35,619 INFO L87 Difference]: Start difference. First operand 488 states and 686 transitions. Second operand has 17 states, 17 states have (on average 4.411764705882353) internal successors, (75), 16 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 05:00:36,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 05:00:36,067 INFO L93 Difference]: Finished difference Result 1014 states and 1433 transitions. [2024-10-24 05:00:36,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-24 05:00:36,068 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 4.411764705882353) internal successors, (75), 16 states have internal predecessors, (75), 0 states have call successors, (0), 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 75 [2024-10-24 05:00:36,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 05:00:36,070 INFO L225 Difference]: With dead ends: 1014 [2024-10-24 05:00:36,070 INFO L226 Difference]: Without dead ends: 587 [2024-10-24 05:00:36,071 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=80, Invalid=570, Unknown=0, NotChecked=0, Total=650 [2024-10-24 05:00:36,072 INFO L432 NwaCegarLoop]: 132 mSDtfsCounter, 132 mSDsluCounter, 1492 mSDsCounter, 0 mSdLazyCounter, 332 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 1624 SdHoareTripleChecker+Invalid, 335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 332 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-24 05:00:36,073 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [132 Valid, 1624 Invalid, 335 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 332 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-24 05:00:36,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 587 states. [2024-10-24 05:00:36,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 587 to 504. [2024-10-24 05:00:36,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 504 states, 503 states have (on average 1.4055666003976144) internal successors, (707), 503 states have internal predecessors, (707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 05:00:36,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 504 states to 504 states and 707 transitions. [2024-10-24 05:00:36,085 INFO L78 Accepts]: Start accepts. Automaton has 504 states and 707 transitions. Word has length 75 [2024-10-24 05:00:36,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 05:00:36,085 INFO L471 AbstractCegarLoop]: Abstraction has 504 states and 707 transitions. [2024-10-24 05:00:36,086 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 4.411764705882353) internal successors, (75), 16 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 05:00:36,086 INFO L276 IsEmpty]: Start isEmpty. Operand 504 states and 707 transitions. [2024-10-24 05:00:36,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-10-24 05:00:36,087 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 05:00:36,087 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 05:00:36,087 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-10-24 05:00:36,087 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 05:00:36,088 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 05:00:36,088 INFO L85 PathProgramCache]: Analyzing trace with hash 481668261, now seen corresponding path program 1 times [2024-10-24 05:00:36,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 05:00:36,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719399590] [2024-10-24 05:00:36,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 05:00:36,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 05:00:36,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 05:00:36,332 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 05:00:36,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 05:00:36,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [719399590] [2024-10-24 05:00:36,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [719399590] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 05:00:36,333 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 05:00:36,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 05:00:36,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145254847] [2024-10-24 05:00:36,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 05:00:36,336 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 05:00:36,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 05:00:36,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 05:00:36,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-24 05:00:36,337 INFO L87 Difference]: Start difference. First operand 504 states and 707 transitions. Second operand has 5 states, 5 states have (on average 15.0) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 05:00:36,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 05:00:36,393 INFO L93 Difference]: Finished difference Result 1001 states and 1411 transitions. [2024-10-24 05:00:36,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 05:00:36,396 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 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 75 [2024-10-24 05:00:36,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 05:00:36,398 INFO L225 Difference]: With dead ends: 1001 [2024-10-24 05:00:36,398 INFO L226 Difference]: Without dead ends: 574 [2024-10-24 05:00:36,400 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-24 05:00:36,401 INFO L432 NwaCegarLoop]: 145 mSDtfsCounter, 75 mSDsluCounter, 407 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 552 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 05:00:36,402 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 552 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 05:00:36,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 574 states. [2024-10-24 05:00:36,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 574 to 507. [2024-10-24 05:00:36,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 507 states, 506 states have (on average 1.401185770750988) internal successors, (709), 506 states have internal predecessors, (709), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 05:00:36,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 507 states to 507 states and 709 transitions. [2024-10-24 05:00:36,417 INFO L78 Accepts]: Start accepts. Automaton has 507 states and 709 transitions. Word has length 75 [2024-10-24 05:00:36,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 05:00:36,418 INFO L471 AbstractCegarLoop]: Abstraction has 507 states and 709 transitions. [2024-10-24 05:00:36,418 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 05:00:36,418 INFO L276 IsEmpty]: Start isEmpty. Operand 507 states and 709 transitions. [2024-10-24 05:00:36,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-10-24 05:00:36,419 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 05:00:36,420 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-24 05:00:36,420 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-10-24 05:00:36,420 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 05:00:36,421 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 05:00:36,421 INFO L85 PathProgramCache]: Analyzing trace with hash -1098244352, now seen corresponding path program 1 times [2024-10-24 05:00:36,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 05:00:36,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468972495] [2024-10-24 05:00:36,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 05:00:36,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 05:00:36,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 05:00:37,060 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 05:00:37,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 05:00:37,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468972495] [2024-10-24 05:00:37,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [468972495] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 05:00:37,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [882218864] [2024-10-24 05:00:37,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 05:00:37,061 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 05:00:37,062 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 05:00:37,064 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) [2024-10-24 05:00:37,066 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-24 05:00:37,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 05:00:37,286 INFO L255 TraceCheckSpWp]: Trace formula consists of 408 conjuncts, 61 conjuncts are in the unsatisfiable core [2024-10-24 05:00:37,293 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 05:00:37,713 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 05:00:37,713 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 05:00:38,586 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 05:00:38,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [882218864] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 05:00:38,587 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 05:00:38,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 14, 15] total 34 [2024-10-24 05:00:38,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547372899] [2024-10-24 05:00:38,587 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 05:00:38,588 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-10-24 05:00:38,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 05:00:38,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-10-24 05:00:38,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=998, Unknown=0, NotChecked=0, Total=1122 [2024-10-24 05:00:38,590 INFO L87 Difference]: Start difference. First operand 507 states and 709 transitions. Second operand has 34 states, 34 states have (on average 5.294117647058823) internal successors, (180), 34 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) [2024-10-24 05:00:39,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 05:00:39,355 INFO L93 Difference]: Finished difference Result 1680 states and 2372 transitions. [2024-10-24 05:00:39,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-10-24 05:00:39,356 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 5.294117647058823) internal successors, (180), 34 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 76 [2024-10-24 05:00:39,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 05:00:39,361 INFO L225 Difference]: With dead ends: 1680 [2024-10-24 05:00:39,362 INFO L226 Difference]: Without dead ends: 1225 [2024-10-24 05:00:39,363 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 553 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=319, Invalid=2231, Unknown=0, NotChecked=0, Total=2550 [2024-10-24 05:00:39,364 INFO L432 NwaCegarLoop]: 138 mSDtfsCounter, 918 mSDsluCounter, 2268 mSDsCounter, 0 mSdLazyCounter, 517 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 918 SdHoareTripleChecker+Valid, 2406 SdHoareTripleChecker+Invalid, 533 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 517 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-24 05:00:39,364 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [918 Valid, 2406 Invalid, 533 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 517 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-24 05:00:39,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1225 states. [2024-10-24 05:00:39,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1225 to 940. [2024-10-24 05:00:39,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 940 states, 939 states have (on average 1.3961661341853036) internal successors, (1311), 939 states have internal predecessors, (1311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 05:00:39,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 940 states to 940 states and 1311 transitions. [2024-10-24 05:00:39,388 INFO L78 Accepts]: Start accepts. Automaton has 940 states and 1311 transitions. Word has length 76 [2024-10-24 05:00:39,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 05:00:39,389 INFO L471 AbstractCegarLoop]: Abstraction has 940 states and 1311 transitions. [2024-10-24 05:00:39,389 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 5.294117647058823) internal successors, (180), 34 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) [2024-10-24 05:00:39,389 INFO L276 IsEmpty]: Start isEmpty. Operand 940 states and 1311 transitions. [2024-10-24 05:00:39,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-10-24 05:00:39,392 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 05:00:39,392 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-24 05:00:39,411 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-24 05:00:39,593 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,SelfDestructingSolverStorable15 [2024-10-24 05:00:39,593 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 05:00:39,594 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 05:00:39,594 INFO L85 PathProgramCache]: Analyzing trace with hash -2061550618, now seen corresponding path program 1 times [2024-10-24 05:00:39,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 05:00:39,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725260657] [2024-10-24 05:00:39,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 05:00:39,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 05:00:39,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 05:00:40,080 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 05:00:40,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 05:00:40,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1725260657] [2024-10-24 05:00:40,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1725260657] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 05:00:40,080 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 05:00:40,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-24 05:00:40,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444347083] [2024-10-24 05:00:40,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 05:00:40,081 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-24 05:00:40,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 05:00:40,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-24 05:00:40,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-24 05:00:40,082 INFO L87 Difference]: Start difference. First operand 940 states and 1311 transitions. Second operand has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 6 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 05:00:40,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 05:00:40,150 INFO L93 Difference]: Finished difference Result 1907 states and 2686 transitions. [2024-10-24 05:00:40,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-24 05:00:40,151 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 6 states have internal predecessors, (76), 0 states have call successors, (0), 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 76 [2024-10-24 05:00:40,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 05:00:40,155 INFO L225 Difference]: With dead ends: 1907 [2024-10-24 05:00:40,155 INFO L226 Difference]: Without dead ends: 1073 [2024-10-24 05:00:40,156 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-24 05:00:40,157 INFO L432 NwaCegarLoop]: 144 mSDtfsCounter, 64 mSDsluCounter, 688 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 832 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 05:00:40,157 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 832 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 05:00:40,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1073 states. [2024-10-24 05:00:40,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1073 to 1073. [2024-10-24 05:00:40,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1073 states, 1072 states have (on average 1.396455223880597) internal successors, (1497), 1072 states have internal predecessors, (1497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 05:00:40,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1073 states to 1073 states and 1497 transitions. [2024-10-24 05:00:40,179 INFO L78 Accepts]: Start accepts. Automaton has 1073 states and 1497 transitions. Word has length 76 [2024-10-24 05:00:40,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 05:00:40,179 INFO L471 AbstractCegarLoop]: Abstraction has 1073 states and 1497 transitions. [2024-10-24 05:00:40,180 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 6 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 05:00:40,180 INFO L276 IsEmpty]: Start isEmpty. Operand 1073 states and 1497 transitions. [2024-10-24 05:00:40,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-10-24 05:00:40,181 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 05:00:40,181 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-24 05:00:40,182 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-10-24 05:00:40,182 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 05:00:40,183 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 05:00:40,183 INFO L85 PathProgramCache]: Analyzing trace with hash -1618116590, now seen corresponding path program 1 times [2024-10-24 05:00:40,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 05:00:40,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171861723] [2024-10-24 05:00:40,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 05:00:40,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 05:00:40,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 05:00:40,684 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 05:00:40,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 05:00:40,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171861723] [2024-10-24 05:00:40,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [171861723] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 05:00:40,685 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 05:00:40,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-24 05:00:40,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808562359] [2024-10-24 05:00:40,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 05:00:40,686 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-24 05:00:40,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 05:00:40,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-24 05:00:40,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-10-24 05:00:40,687 INFO L87 Difference]: Start difference. First operand 1073 states and 1497 transitions. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 05:00:40,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 05:00:40,795 INFO L93 Difference]: Finished difference Result 1984 states and 2777 transitions. [2024-10-24 05:00:40,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-24 05:00:40,796 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 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 76 [2024-10-24 05:00:40,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 05:00:40,800 INFO L225 Difference]: With dead ends: 1984 [2024-10-24 05:00:40,800 INFO L226 Difference]: Without dead ends: 1108 [2024-10-24 05:00:40,804 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-10-24 05:00:40,805 INFO L432 NwaCegarLoop]: 143 mSDtfsCounter, 83 mSDsluCounter, 617 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 760 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 05:00:40,805 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 760 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 05:00:40,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1108 states. [2024-10-24 05:00:40,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1108 to 1108. [2024-10-24 05:00:40,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1108 states, 1107 states have (on average 1.3902439024390243) internal successors, (1539), 1107 states have internal predecessors, (1539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 05:00:40,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1108 states to 1108 states and 1539 transitions. [2024-10-24 05:00:40,828 INFO L78 Accepts]: Start accepts. Automaton has 1108 states and 1539 transitions. Word has length 76 [2024-10-24 05:00:40,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 05:00:40,829 INFO L471 AbstractCegarLoop]: Abstraction has 1108 states and 1539 transitions. [2024-10-24 05:00:40,829 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 05:00:40,829 INFO L276 IsEmpty]: Start isEmpty. Operand 1108 states and 1539 transitions. [2024-10-24 05:00:40,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-10-24 05:00:40,830 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 05:00:40,831 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-24 05:00:40,831 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-10-24 05:00:40,831 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 05:00:40,831 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 05:00:40,832 INFO L85 PathProgramCache]: Analyzing trace with hash -5445589, now seen corresponding path program 1 times [2024-10-24 05:00:40,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 05:00:40,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2144546297] [2024-10-24 05:00:40,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 05:00:40,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 05:00:40,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 05:00:41,016 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 05:00:41,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 05:00:41,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2144546297] [2024-10-24 05:00:41,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2144546297] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 05:00:41,017 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 05:00:41,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 05:00:41,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841890589] [2024-10-24 05:00:41,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 05:00:41,019 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 05:00:41,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 05:00:41,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 05:00:41,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-24 05:00:41,020 INFO L87 Difference]: Start difference. First operand 1108 states and 1539 transitions. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 05:00:41,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 05:00:41,066 INFO L93 Difference]: Finished difference Result 2058 states and 2867 transitions. [2024-10-24 05:00:41,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 05:00:41,066 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 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 76 [2024-10-24 05:00:41,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 05:00:41,070 INFO L225 Difference]: With dead ends: 2058 [2024-10-24 05:00:41,070 INFO L226 Difference]: Without dead ends: 1088 [2024-10-24 05:00:41,072 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-24 05:00:41,072 INFO L432 NwaCegarLoop]: 148 mSDtfsCounter, 67 mSDsluCounter, 417 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 565 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 05:00:41,072 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 565 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 05:00:41,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1088 states. [2024-10-24 05:00:41,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1088 to 1088. [2024-10-24 05:00:41,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1088 states, 1087 states have (on average 1.3845446182152714) internal successors, (1505), 1087 states have internal predecessors, (1505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 05:00:41,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1088 states to 1088 states and 1505 transitions. [2024-10-24 05:00:41,093 INFO L78 Accepts]: Start accepts. Automaton has 1088 states and 1505 transitions. Word has length 76 [2024-10-24 05:00:41,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 05:00:41,093 INFO L471 AbstractCegarLoop]: Abstraction has 1088 states and 1505 transitions. [2024-10-24 05:00:41,094 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 05:00:41,094 INFO L276 IsEmpty]: Start isEmpty. Operand 1088 states and 1505 transitions. [2024-10-24 05:00:41,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-10-24 05:00:41,095 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 05:00:41,095 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-24 05:00:41,095 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-10-24 05:00:41,095 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 05:00:41,096 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 05:00:41,096 INFO L85 PathProgramCache]: Analyzing trace with hash 1225035437, now seen corresponding path program 1 times [2024-10-24 05:00:41,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 05:00:41,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769883574] [2024-10-24 05:00:41,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 05:00:41,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 05:00:41,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 05:00:41,400 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 05:00:41,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 05:00:41,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769883574] [2024-10-24 05:00:41,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [769883574] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 05:00:41,401 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 05:00:41,401 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-24 05:00:41,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704077714] [2024-10-24 05:00:41,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 05:00:41,403 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-24 05:00:41,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 05:00:41,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-24 05:00:41,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-24 05:00:41,404 INFO L87 Difference]: Start difference. First operand 1088 states and 1505 transitions. Second operand has 7 states, 7 states have (on average 11.0) internal successors, (77), 6 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 05:00:41,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 05:00:41,481 INFO L93 Difference]: Finished difference Result 1964 states and 2734 transitions. [2024-10-24 05:00:41,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-24 05:00:41,482 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 6 states have internal predecessors, (77), 0 states have call successors, (0), 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 77 [2024-10-24 05:00:41,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 05:00:41,486 INFO L225 Difference]: With dead ends: 1964 [2024-10-24 05:00:41,486 INFO L226 Difference]: Without dead ends: 1094 [2024-10-24 05:00:41,487 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-24 05:00:41,488 INFO L432 NwaCegarLoop]: 141 mSDtfsCounter, 56 mSDsluCounter, 673 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 814 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 05:00:41,489 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 814 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 05:00:41,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1094 states. [2024-10-24 05:00:41,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1094 to 1088. [2024-10-24 05:00:41,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1088 states, 1087 states have (on average 1.3790248390064397) internal successors, (1499), 1087 states have internal predecessors, (1499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 05:00:41,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1088 states to 1088 states and 1499 transitions. [2024-10-24 05:00:41,519 INFO L78 Accepts]: Start accepts. Automaton has 1088 states and 1499 transitions. Word has length 77 [2024-10-24 05:00:41,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 05:00:41,519 INFO L471 AbstractCegarLoop]: Abstraction has 1088 states and 1499 transitions. [2024-10-24 05:00:41,519 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 6 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 05:00:41,520 INFO L276 IsEmpty]: Start isEmpty. Operand 1088 states and 1499 transitions. [2024-10-24 05:00:41,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-10-24 05:00:41,521 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 05:00:41,521 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 05:00:41,521 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-10-24 05:00:41,521 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 05:00:41,522 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 05:00:41,523 INFO L85 PathProgramCache]: Analyzing trace with hash -1648943154, now seen corresponding path program 1 times [2024-10-24 05:00:41,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 05:00:41,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017017417] [2024-10-24 05:00:41,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 05:00:41,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 05:00:41,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 05:00:42,326 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 05:00:42,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 05:00:42,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017017417] [2024-10-24 05:00:42,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1017017417] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 05:00:42,327 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 05:00:42,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-10-24 05:00:42,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260514126] [2024-10-24 05:00:42,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 05:00:42,328 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-24 05:00:42,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 05:00:42,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-24 05:00:42,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2024-10-24 05:00:42,329 INFO L87 Difference]: Start difference. First operand 1088 states and 1499 transitions. Second operand has 15 states, 15 states have (on average 5.133333333333334) internal successors, (77), 14 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 05:00:42,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 05:00:42,673 INFO L93 Difference]: Finished difference Result 1959 states and 2721 transitions. [2024-10-24 05:00:42,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-24 05:00:42,674 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 5.133333333333334) internal successors, (77), 14 states have internal predecessors, (77), 0 states have call successors, (0), 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 77 [2024-10-24 05:00:42,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 05:00:42,677 INFO L225 Difference]: With dead ends: 1959 [2024-10-24 05:00:42,678 INFO L226 Difference]: Without dead ends: 1111 [2024-10-24 05:00:42,679 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=71, Invalid=391, Unknown=0, NotChecked=0, Total=462 [2024-10-24 05:00:42,679 INFO L432 NwaCegarLoop]: 136 mSDtfsCounter, 100 mSDsluCounter, 1403 mSDsCounter, 0 mSdLazyCounter, 275 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 1539 SdHoareTripleChecker+Invalid, 282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 275 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-24 05:00:42,680 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 1539 Invalid, 282 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 275 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-24 05:00:42,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1111 states. [2024-10-24 05:00:42,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1111 to 1086. [2024-10-24 05:00:42,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1086 states, 1085 states have (on average 1.3732718894009217) internal successors, (1490), 1085 states have internal predecessors, (1490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 05:00:42,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1086 states to 1086 states and 1490 transitions. [2024-10-24 05:00:42,701 INFO L78 Accepts]: Start accepts. Automaton has 1086 states and 1490 transitions. Word has length 77 [2024-10-24 05:00:42,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 05:00:42,701 INFO L471 AbstractCegarLoop]: Abstraction has 1086 states and 1490 transitions. [2024-10-24 05:00:42,702 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 5.133333333333334) internal successors, (77), 14 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 05:00:42,702 INFO L276 IsEmpty]: Start isEmpty. Operand 1086 states and 1490 transitions. [2024-10-24 05:00:42,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-10-24 05:00:42,703 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 05:00:42,703 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-24 05:00:42,703 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-10-24 05:00:42,703 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 05:00:42,704 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 05:00:42,704 INFO L85 PathProgramCache]: Analyzing trace with hash -1744609825, now seen corresponding path program 1 times [2024-10-24 05:00:42,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 05:00:42,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167864315] [2024-10-24 05:00:42,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 05:00:42,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 05:00:42,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 05:00:43,041 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 05:00:43,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 05:00:43,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167864315] [2024-10-24 05:00:43,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1167864315] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 05:00:43,042 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 05:00:43,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-24 05:00:43,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398156967] [2024-10-24 05:00:43,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 05:00:43,043 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-24 05:00:43,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 05:00:43,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-24 05:00:43,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-24 05:00:43,044 INFO L87 Difference]: Start difference. First operand 1086 states and 1490 transitions. Second operand has 7 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 05:00:43,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 05:00:43,110 INFO L93 Difference]: Finished difference Result 2207 states and 3039 transitions. [2024-10-24 05:00:43,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-24 05:00:43,111 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 0 states have call successors, (0), 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 77 [2024-10-24 05:00:43,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 05:00:43,116 INFO L225 Difference]: With dead ends: 2207 [2024-10-24 05:00:43,116 INFO L226 Difference]: Without dead ends: 1159 [2024-10-24 05:00:43,119 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-24 05:00:43,120 INFO L432 NwaCegarLoop]: 146 mSDtfsCounter, 9 mSDsluCounter, 719 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 865 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 05:00:43,120 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 865 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 05:00:43,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1159 states. [2024-10-24 05:00:43,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1159 to 1154. [2024-10-24 05:00:43,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1154 states, 1153 states have (on average 1.372940156114484) internal successors, (1583), 1153 states have internal predecessors, (1583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 05:00:43,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1154 states to 1154 states and 1583 transitions. [2024-10-24 05:00:43,142 INFO L78 Accepts]: Start accepts. Automaton has 1154 states and 1583 transitions. Word has length 77 [2024-10-24 05:00:43,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 05:00:43,142 INFO L471 AbstractCegarLoop]: Abstraction has 1154 states and 1583 transitions. [2024-10-24 05:00:43,143 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 05:00:43,143 INFO L276 IsEmpty]: Start isEmpty. Operand 1154 states and 1583 transitions. [2024-10-24 05:00:43,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-10-24 05:00:43,144 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 05:00:43,145 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-24 05:00:43,145 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-10-24 05:00:43,146 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 05:00:43,146 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 05:00:43,146 INFO L85 PathProgramCache]: Analyzing trace with hash 294318431, now seen corresponding path program 1 times [2024-10-24 05:00:43,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 05:00:43,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990626776] [2024-10-24 05:00:43,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 05:00:43,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 05:00:43,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 05:00:43,667 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 05:00:43,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 05:00:43,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [990626776] [2024-10-24 05:00:43,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [990626776] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 05:00:43,668 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 05:00:43,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-24 05:00:43,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559929220] [2024-10-24 05:00:43,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 05:00:43,669 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-24 05:00:43,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 05:00:43,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-24 05:00:43,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-10-24 05:00:43,670 INFO L87 Difference]: Start difference. First operand 1154 states and 1583 transitions. Second operand has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 8 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 05:00:43,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 05:00:43,828 INFO L93 Difference]: Finished difference Result 2062 states and 2852 transitions. [2024-10-24 05:00:43,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-24 05:00:43,829 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 8 states have internal predecessors, (78), 0 states have call successors, (0), 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 78 [2024-10-24 05:00:43,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 05:00:43,833 INFO L225 Difference]: With dead ends: 2062 [2024-10-24 05:00:43,833 INFO L226 Difference]: Without dead ends: 1154 [2024-10-24 05:00:43,835 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-10-24 05:00:43,836 INFO L432 NwaCegarLoop]: 142 mSDtfsCounter, 69 mSDsluCounter, 956 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 1098 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 05:00:43,836 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 1098 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 05:00:43,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1154 states. [2024-10-24 05:00:43,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1154 to 1154. [2024-10-24 05:00:43,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1154 states, 1153 states have (on average 1.3677363399826539) internal successors, (1577), 1153 states have internal predecessors, (1577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 05:00:43,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1154 states to 1154 states and 1577 transitions. [2024-10-24 05:00:43,858 INFO L78 Accepts]: Start accepts. Automaton has 1154 states and 1577 transitions. Word has length 78 [2024-10-24 05:00:43,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 05:00:43,858 INFO L471 AbstractCegarLoop]: Abstraction has 1154 states and 1577 transitions. [2024-10-24 05:00:43,859 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 8 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 05:00:43,859 INFO L276 IsEmpty]: Start isEmpty. Operand 1154 states and 1577 transitions. [2024-10-24 05:00:43,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-10-24 05:00:43,860 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 05:00:43,860 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-24 05:00:43,861 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-10-24 05:00:43,861 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 05:00:43,861 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 05:00:43,861 INFO L85 PathProgramCache]: Analyzing trace with hash 908125579, now seen corresponding path program 1 times [2024-10-24 05:00:43,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 05:00:43,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139491096] [2024-10-24 05:00:43,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 05:00:43,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 05:00:43,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 05:00:44,296 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 05:00:44,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 05:00:44,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2139491096] [2024-10-24 05:00:44,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2139491096] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 05:00:44,297 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 05:00:44,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-24 05:00:44,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753157186] [2024-10-24 05:00:44,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 05:00:44,299 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-24 05:00:44,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 05:00:44,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-24 05:00:44,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-10-24 05:00:44,300 INFO L87 Difference]: Start difference. First operand 1154 states and 1577 transitions. Second operand has 8 states, 8 states have (on average 9.75) internal successors, (78), 7 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 05:00:44,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 05:00:44,394 INFO L93 Difference]: Finished difference Result 2059 states and 2850 transitions. [2024-10-24 05:00:44,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-24 05:00:44,395 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 7 states have internal predecessors, (78), 0 states have call successors, (0), 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 78 [2024-10-24 05:00:44,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 05:00:44,398 INFO L225 Difference]: With dead ends: 2059 [2024-10-24 05:00:44,399 INFO L226 Difference]: Without dead ends: 1175 [2024-10-24 05:00:44,401 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-10-24 05:00:44,402 INFO L432 NwaCegarLoop]: 145 mSDtfsCounter, 59 mSDsluCounter, 830 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 975 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 05:00:44,402 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 975 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 05:00:44,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1175 states. [2024-10-24 05:00:44,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1175 to 1168. [2024-10-24 05:00:44,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1168 states, 1167 states have (on average 1.363324764353042) internal successors, (1591), 1167 states have internal predecessors, (1591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 05:00:44,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1168 states to 1168 states and 1591 transitions. [2024-10-24 05:00:44,453 INFO L78 Accepts]: Start accepts. Automaton has 1168 states and 1591 transitions. Word has length 78 [2024-10-24 05:00:44,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 05:00:44,453 INFO L471 AbstractCegarLoop]: Abstraction has 1168 states and 1591 transitions. [2024-10-24 05:00:44,454 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 7 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 05:00:44,454 INFO L276 IsEmpty]: Start isEmpty. Operand 1168 states and 1591 transitions. [2024-10-24 05:00:44,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-10-24 05:00:44,455 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 05:00:44,455 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-24 05:00:44,455 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-10-24 05:00:44,455 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 05:00:44,456 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 05:00:44,457 INFO L85 PathProgramCache]: Analyzing trace with hash -1165840261, now seen corresponding path program 1 times [2024-10-24 05:00:44,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 05:00:44,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637389487] [2024-10-24 05:00:44,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 05:00:44,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 05:00:44,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 05:00:45,305 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 05:00:45,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 05:00:45,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [637389487] [2024-10-24 05:00:45,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [637389487] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 05:00:45,306 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 05:00:45,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-10-24 05:00:45,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219301779] [2024-10-24 05:00:45,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 05:00:45,307 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-24 05:00:45,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 05:00:45,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-24 05:00:45,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2024-10-24 05:00:45,308 INFO L87 Difference]: Start difference. First operand 1168 states and 1591 transitions. Second operand has 14 states, 14 states have (on average 5.571428571428571) internal successors, (78), 13 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 05:00:45,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 05:00:45,724 INFO L93 Difference]: Finished difference Result 2270 states and 3099 transitions. [2024-10-24 05:00:45,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-10-24 05:00:45,725 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.571428571428571) internal successors, (78), 13 states have internal predecessors, (78), 0 states have call successors, (0), 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 78 [2024-10-24 05:00:45,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 05:00:45,729 INFO L225 Difference]: With dead ends: 2270 [2024-10-24 05:00:45,730 INFO L226 Difference]: Without dead ends: 1238 [2024-10-24 05:00:45,732 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=81, Invalid=425, Unknown=0, NotChecked=0, Total=506 [2024-10-24 05:00:45,732 INFO L432 NwaCegarLoop]: 129 mSDtfsCounter, 149 mSDsluCounter, 1417 mSDsCounter, 0 mSdLazyCounter, 310 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 1546 SdHoareTripleChecker+Invalid, 311 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 310 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-24 05:00:45,733 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [149 Valid, 1546 Invalid, 311 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 310 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-24 05:00:45,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1238 states. [2024-10-24 05:00:45,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1238 to 1219. [2024-10-24 05:00:45,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1219 states, 1218 states have (on average 1.3620689655172413) internal successors, (1659), 1218 states have internal predecessors, (1659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 05:00:45,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1219 states to 1219 states and 1659 transitions. [2024-10-24 05:00:45,761 INFO L78 Accepts]: Start accepts. Automaton has 1219 states and 1659 transitions. Word has length 78 [2024-10-24 05:00:45,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 05:00:45,761 INFO L471 AbstractCegarLoop]: Abstraction has 1219 states and 1659 transitions. [2024-10-24 05:00:45,762 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.571428571428571) internal successors, (78), 13 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 05:00:45,762 INFO L276 IsEmpty]: Start isEmpty. Operand 1219 states and 1659 transitions. [2024-10-24 05:00:45,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-10-24 05:00:45,764 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 05:00:45,764 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-24 05:00:45,764 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-10-24 05:00:45,764 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 05:00:45,765 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 05:00:45,765 INFO L85 PathProgramCache]: Analyzing trace with hash -976284124, now seen corresponding path program 1 times [2024-10-24 05:00:45,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 05:00:45,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290057233] [2024-10-24 05:00:45,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 05:00:45,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 05:00:45,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 05:00:45,951 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 05:00:45,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 05:00:45,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290057233] [2024-10-24 05:00:45,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [290057233] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 05:00:45,951 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 05:00:45,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 05:00:45,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138289189] [2024-10-24 05:00:45,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 05:00:45,952 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 05:00:45,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 05:00:45,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 05:00:45,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-24 05:00:45,954 INFO L87 Difference]: Start difference. First operand 1219 states and 1659 transitions. Second operand has 5 states, 5 states have (on average 15.6) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 05:00:46,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 05:00:46,007 INFO L93 Difference]: Finished difference Result 2369 states and 3226 transitions. [2024-10-24 05:00:46,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 05:00:46,008 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 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 78 [2024-10-24 05:00:46,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 05:00:46,012 INFO L225 Difference]: With dead ends: 2369 [2024-10-24 05:00:46,012 INFO L226 Difference]: Without dead ends: 1201 [2024-10-24 05:00:46,014 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-24 05:00:46,014 INFO L432 NwaCegarLoop]: 145 mSDtfsCounter, 71 mSDsluCounter, 407 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 552 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 05:00:46,015 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 552 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 05:00:46,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1201 states. [2024-10-24 05:00:46,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1201 to 1201. [2024-10-24 05:00:46,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1201 states, 1200 states have (on average 1.3591666666666666) internal successors, (1631), 1200 states have internal predecessors, (1631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 05:00:46,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1201 states to 1201 states and 1631 transitions. [2024-10-24 05:00:46,040 INFO L78 Accepts]: Start accepts. Automaton has 1201 states and 1631 transitions. Word has length 78 [2024-10-24 05:00:46,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 05:00:46,040 INFO L471 AbstractCegarLoop]: Abstraction has 1201 states and 1631 transitions. [2024-10-24 05:00:46,040 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 05:00:46,040 INFO L276 IsEmpty]: Start isEmpty. Operand 1201 states and 1631 transitions. [2024-10-24 05:00:46,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-10-24 05:00:46,041 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 05:00:46,042 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-24 05:00:46,042 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-10-24 05:00:46,042 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 05:00:46,042 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 05:00:46,043 INFO L85 PathProgramCache]: Analyzing trace with hash 1971126798, now seen corresponding path program 1 times [2024-10-24 05:00:46,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 05:00:46,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768104383] [2024-10-24 05:00:46,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 05:00:46,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 05:00:46,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 05:00:46,225 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 05:00:46,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 05:00:46,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [768104383] [2024-10-24 05:00:46,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [768104383] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 05:00:46,225 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 05:00:46,226 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 05:00:46,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597046679] [2024-10-24 05:00:46,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 05:00:46,226 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 05:00:46,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 05:00:46,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 05:00:46,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-24 05:00:46,227 INFO L87 Difference]: Start difference. First operand 1201 states and 1631 transitions. Second operand has 5 states, 5 states have (on average 15.6) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 05:00:46,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 05:00:46,274 INFO L93 Difference]: Finished difference Result 2355 states and 3202 transitions. [2024-10-24 05:00:46,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 05:00:46,275 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 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 78 [2024-10-24 05:00:46,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 05:00:46,279 INFO L225 Difference]: With dead ends: 2355 [2024-10-24 05:00:46,279 INFO L226 Difference]: Without dead ends: 1196 [2024-10-24 05:00:46,280 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-24 05:00:46,281 INFO L432 NwaCegarLoop]: 147 mSDtfsCounter, 78 mSDsluCounter, 413 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 560 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 05:00:46,282 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 560 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 05:00:46,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1196 states. [2024-10-24 05:00:46,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1196 to 1196. [2024-10-24 05:00:46,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1196 states, 1195 states have (on average 1.3573221757322176) internal successors, (1622), 1195 states have internal predecessors, (1622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 05:00:46,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1196 states to 1196 states and 1622 transitions. [2024-10-24 05:00:46,310 INFO L78 Accepts]: Start accepts. Automaton has 1196 states and 1622 transitions. Word has length 78 [2024-10-24 05:00:46,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 05:00:46,311 INFO L471 AbstractCegarLoop]: Abstraction has 1196 states and 1622 transitions. [2024-10-24 05:00:46,311 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 05:00:46,311 INFO L276 IsEmpty]: Start isEmpty. Operand 1196 states and 1622 transitions. [2024-10-24 05:00:46,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-10-24 05:00:46,312 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 05:00:46,312 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 05:00:46,313 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-10-24 05:00:46,313 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 05:00:46,313 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 05:00:46,313 INFO L85 PathProgramCache]: Analyzing trace with hash 1951740091, now seen corresponding path program 1 times [2024-10-24 05:00:46,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 05:00:46,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233852462] [2024-10-24 05:00:46,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 05:00:46,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 05:00:46,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 05:00:46,887 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 05:00:46,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 05:00:46,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233852462] [2024-10-24 05:00:46,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1233852462] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 05:00:46,888 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 05:00:46,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-10-24 05:00:46,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562431391] [2024-10-24 05:00:46,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 05:00:46,889 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-24 05:00:46,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 05:00:46,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-24 05:00:46,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-10-24 05:00:46,890 INFO L87 Difference]: Start difference. First operand 1196 states and 1622 transitions. Second operand has 11 states, 11 states have (on average 7.181818181818182) internal successors, (79), 11 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 05:00:47,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 05:00:47,014 INFO L93 Difference]: Finished difference Result 2215 states and 3057 transitions. [2024-10-24 05:00:47,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-24 05:00:47,015 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 7.181818181818182) internal successors, (79), 11 states have internal predecessors, (79), 0 states have call successors, (0), 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 79 [2024-10-24 05:00:47,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 05:00:47,020 INFO L225 Difference]: With dead ends: 2215 [2024-10-24 05:00:47,020 INFO L226 Difference]: Without dead ends: 1315 [2024-10-24 05:00:47,022 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-10-24 05:00:47,022 INFO L432 NwaCegarLoop]: 144 mSDtfsCounter, 35 mSDsluCounter, 757 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 901 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 05:00:47,023 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 901 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 05:00:47,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1315 states. [2024-10-24 05:00:47,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1315 to 1280. [2024-10-24 05:00:47,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1280 states, 1279 states have (on average 1.3635652853792024) internal successors, (1744), 1279 states have internal predecessors, (1744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 05:00:47,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1280 states to 1280 states and 1744 transitions. [2024-10-24 05:00:47,056 INFO L78 Accepts]: Start accepts. Automaton has 1280 states and 1744 transitions. Word has length 79 [2024-10-24 05:00:47,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 05:00:47,056 INFO L471 AbstractCegarLoop]: Abstraction has 1280 states and 1744 transitions. [2024-10-24 05:00:47,056 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.181818181818182) internal successors, (79), 11 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 05:00:47,057 INFO L276 IsEmpty]: Start isEmpty. Operand 1280 states and 1744 transitions. [2024-10-24 05:00:47,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-10-24 05:00:47,058 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 05:00:47,058 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 05:00:47,058 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-10-24 05:00:47,058 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 05:00:47,059 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 05:00:47,059 INFO L85 PathProgramCache]: Analyzing trace with hash -1028030181, now seen corresponding path program 1 times [2024-10-24 05:00:47,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 05:00:47,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [214138712] [2024-10-24 05:00:47,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 05:00:47,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 05:00:47,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 05:00:47,640 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 05:00:47,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 05:00:47,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [214138712] [2024-10-24 05:00:47,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [214138712] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 05:00:47,641 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 05:00:47,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-24 05:00:47,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088857430] [2024-10-24 05:00:47,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 05:00:47,642 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-24 05:00:47,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 05:00:47,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-24 05:00:47,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-10-24 05:00:47,643 INFO L87 Difference]: Start difference. First operand 1280 states and 1744 transitions. Second operand has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 05:00:47,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 05:00:47,741 INFO L93 Difference]: Finished difference Result 2559 states and 3534 transitions. [2024-10-24 05:00:47,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-24 05:00:47,742 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 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 79 [2024-10-24 05:00:47,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 05:00:47,748 INFO L225 Difference]: With dead ends: 2559 [2024-10-24 05:00:47,748 INFO L226 Difference]: Without dead ends: 1507 [2024-10-24 05:00:47,750 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-10-24 05:00:47,751 INFO L432 NwaCegarLoop]: 145 mSDtfsCounter, 15 mSDsluCounter, 857 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 1002 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 05:00:47,751 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 1002 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 05:00:47,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1507 states. [2024-10-24 05:00:47,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1507 to 1382. [2024-10-24 05:00:47,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1382 states, 1381 states have (on average 1.3577118030412745) internal successors, (1875), 1381 states have internal predecessors, (1875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 05:00:47,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1382 states to 1382 states and 1875 transitions. [2024-10-24 05:00:47,781 INFO L78 Accepts]: Start accepts. Automaton has 1382 states and 1875 transitions. Word has length 79 [2024-10-24 05:00:47,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 05:00:47,781 INFO L471 AbstractCegarLoop]: Abstraction has 1382 states and 1875 transitions. [2024-10-24 05:00:47,781 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 05:00:47,782 INFO L276 IsEmpty]: Start isEmpty. Operand 1382 states and 1875 transitions. [2024-10-24 05:00:47,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-10-24 05:00:47,783 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 05:00:47,783 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 05:00:47,783 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-10-24 05:00:47,784 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 05:00:47,784 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 05:00:47,784 INFO L85 PathProgramCache]: Analyzing trace with hash -1929295991, now seen corresponding path program 1 times [2024-10-24 05:00:47,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 05:00:47,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897436902] [2024-10-24 05:00:47,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 05:00:47,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 05:00:47,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 05:00:48,757 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 05:00:48,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 05:00:48,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897436902] [2024-10-24 05:00:48,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [897436902] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 05:00:48,758 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 05:00:48,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-10-24 05:00:48,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220810332] [2024-10-24 05:00:48,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 05:00:48,759 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-24 05:00:48,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 05:00:48,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-24 05:00:48,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2024-10-24 05:00:48,760 INFO L87 Difference]: Start difference. First operand 1382 states and 1875 transitions. Second operand has 15 states, 15 states have (on average 5.266666666666667) internal successors, (79), 14 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 05:00:49,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 05:00:49,187 INFO L93 Difference]: Finished difference Result 2010 states and 2744 transitions. [2024-10-24 05:00:49,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-24 05:00:49,188 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 5.266666666666667) internal successors, (79), 14 states have internal predecessors, (79), 0 states have call successors, (0), 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 79 [2024-10-24 05:00:49,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 05:00:49,192 INFO L225 Difference]: With dead ends: 2010 [2024-10-24 05:00:49,193 INFO L226 Difference]: Without dead ends: 1439 [2024-10-24 05:00:49,194 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=95, Invalid=505, Unknown=0, NotChecked=0, Total=600 [2024-10-24 05:00:49,194 INFO L432 NwaCegarLoop]: 137 mSDtfsCounter, 114 mSDsluCounter, 1743 mSDsCounter, 0 mSdLazyCounter, 401 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 1880 SdHoareTripleChecker+Invalid, 402 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 401 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-24 05:00:49,195 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 1880 Invalid, 402 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 401 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-24 05:00:49,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1439 states. [2024-10-24 05:00:49,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1439 to 1420. [2024-10-24 05:00:49,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1420 states, 1419 states have (on average 1.3558844256518676) internal successors, (1924), 1419 states have internal predecessors, (1924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 05:00:49,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1420 states to 1420 states and 1924 transitions. [2024-10-24 05:00:49,220 INFO L78 Accepts]: Start accepts. Automaton has 1420 states and 1924 transitions. Word has length 79 [2024-10-24 05:00:49,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 05:00:49,221 INFO L471 AbstractCegarLoop]: Abstraction has 1420 states and 1924 transitions. [2024-10-24 05:00:49,221 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 5.266666666666667) internal successors, (79), 14 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 05:00:49,221 INFO L276 IsEmpty]: Start isEmpty. Operand 1420 states and 1924 transitions. [2024-10-24 05:00:49,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-10-24 05:00:49,223 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 05:00:49,223 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-24 05:00:49,223 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-10-24 05:00:49,223 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 05:00:49,224 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 05:00:49,224 INFO L85 PathProgramCache]: Analyzing trace with hash -1192562180, now seen corresponding path program 1 times [2024-10-24 05:00:49,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 05:00:49,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109005948] [2024-10-24 05:00:49,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 05:00:49,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 05:00:49,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 05:00:49,689 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 05:00:49,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 05:00:49,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109005948] [2024-10-24 05:00:49,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [109005948] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 05:00:49,690 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 05:00:49,690 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-24 05:00:49,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640746061] [2024-10-24 05:00:49,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 05:00:49,692 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-24 05:00:49,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 05:00:49,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-24 05:00:49,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-24 05:00:49,693 INFO L87 Difference]: Start difference. First operand 1420 states and 1924 transitions. Second operand has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 6 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 05:00:49,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 05:00:49,780 INFO L93 Difference]: Finished difference Result 2567 states and 3519 transitions. [2024-10-24 05:00:49,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-24 05:00:49,780 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 6 states have internal predecessors, (79), 0 states have call successors, (0), 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 79 [2024-10-24 05:00:49,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 05:00:49,785 INFO L225 Difference]: With dead ends: 2567 [2024-10-24 05:00:49,785 INFO L226 Difference]: Without dead ends: 1188 [2024-10-24 05:00:49,787 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-10-24 05:00:49,788 INFO L432 NwaCegarLoop]: 144 mSDtfsCounter, 57 mSDsluCounter, 548 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 692 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 05:00:49,788 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 692 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 05:00:49,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1188 states. [2024-10-24 05:00:49,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1188 to 1188. [2024-10-24 05:00:49,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1188 states, 1187 states have (on average 1.3850042122999158) internal successors, (1644), 1187 states have internal predecessors, (1644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 05:00:49,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1188 states to 1188 states and 1644 transitions. [2024-10-24 05:00:49,810 INFO L78 Accepts]: Start accepts. Automaton has 1188 states and 1644 transitions. Word has length 79 [2024-10-24 05:00:49,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 05:00:49,810 INFO L471 AbstractCegarLoop]: Abstraction has 1188 states and 1644 transitions. [2024-10-24 05:00:49,810 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 6 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 05:00:49,810 INFO L276 IsEmpty]: Start isEmpty. Operand 1188 states and 1644 transitions. [2024-10-24 05:00:49,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-10-24 05:00:49,811 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 05:00:49,811 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-24 05:00:49,812 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-10-24 05:00:49,812 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 05:00:49,813 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 05:00:49,813 INFO L85 PathProgramCache]: Analyzing trace with hash 1658880536, now seen corresponding path program 1 times [2024-10-24 05:00:49,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 05:00:49,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698335834] [2024-10-24 05:00:49,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 05:00:49,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 05:00:49,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 05:00:50,575 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 05:00:50,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 05:00:50,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698335834] [2024-10-24 05:00:50,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [698335834] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 05:00:50,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1420719618] [2024-10-24 05:00:50,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 05:00:50,580 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 05:00:50,580 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 05:00:50,582 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) [2024-10-24 05:00:50,586 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-24 05:00:50,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 05:00:50,829 INFO L255 TraceCheckSpWp]: Trace formula consists of 420 conjuncts, 119 conjuncts are in the unsatisfiable core [2024-10-24 05:00:50,835 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 05:00:52,280 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 05:00:52,280 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 05:00:55,505 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 05:00:55,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1420719618] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 05:00:55,506 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 05:00:55,506 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 28, 29] total 73 [2024-10-24 05:00:55,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092102681] [2024-10-24 05:00:55,506 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 05:00:55,507 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 74 states [2024-10-24 05:00:55,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 05:00:55,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2024-10-24 05:00:55,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=485, Invalid=4917, Unknown=0, NotChecked=0, Total=5402 [2024-10-24 05:00:55,512 INFO L87 Difference]: Start difference. First operand 1188 states and 1644 transitions. Second operand has 74 states, 74 states have (on average 3.108108108108108) internal successors, (230), 73 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 05:01:03,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 05:01:03,618 INFO L93 Difference]: Finished difference Result 3088 states and 4331 transitions. [2024-10-24 05:01:03,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2024-10-24 05:01:03,618 INFO L78 Accepts]: Start accepts. Automaton has has 74 states, 74 states have (on average 3.108108108108108) internal successors, (230), 73 states have internal predecessors, (230), 0 states have call successors, (0), 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 80 [2024-10-24 05:01:03,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 05:01:03,629 INFO L225 Difference]: With dead ends: 3088 [2024-10-24 05:01:03,629 INFO L226 Difference]: Without dead ends: 2010 [2024-10-24 05:01:03,635 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 136 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5335 ImplicationChecksByTransitivity, 7.4s TimeCoverageRelationStatistics Valid=2209, Invalid=16697, Unknown=0, NotChecked=0, Total=18906 [2024-10-24 05:01:03,636 INFO L432 NwaCegarLoop]: 265 mSDtfsCounter, 2527 mSDsluCounter, 10711 mSDsCounter, 0 mSdLazyCounter, 5612 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2527 SdHoareTripleChecker+Valid, 10976 SdHoareTripleChecker+Invalid, 5639 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 5612 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2024-10-24 05:01:03,636 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2527 Valid, 10976 Invalid, 5639 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 5612 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2024-10-24 05:01:03,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2010 states. [2024-10-24 05:01:03,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2010 to 1474. [2024-10-24 05:01:03,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1474 states, 1473 states have (on average 1.396469789545146) internal successors, (2057), 1473 states have internal predecessors, (2057), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 05:01:03,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1474 states to 1474 states and 2057 transitions. [2024-10-24 05:01:03,673 INFO L78 Accepts]: Start accepts. Automaton has 1474 states and 2057 transitions. Word has length 80 [2024-10-24 05:01:03,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 05:01:03,673 INFO L471 AbstractCegarLoop]: Abstraction has 1474 states and 2057 transitions. [2024-10-24 05:01:03,673 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 74 states, 74 states have (on average 3.108108108108108) internal successors, (230), 73 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 05:01:03,674 INFO L276 IsEmpty]: Start isEmpty. Operand 1474 states and 2057 transitions. [2024-10-24 05:01:03,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-10-24 05:01:03,674 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 05:01:03,675 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-24 05:01:03,694 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-24 05:01:03,875 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 05:01:03,876 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 05:01:03,876 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 05:01:03,876 INFO L85 PathProgramCache]: Analyzing trace with hash 1074645965, now seen corresponding path program 1 times [2024-10-24 05:01:03,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 05:01:03,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532566686] [2024-10-24 05:01:03,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 05:01:03,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 05:01:03,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 05:01:04,749 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 05:01:04,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 05:01:04,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532566686] [2024-10-24 05:01:04,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [532566686] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 05:01:04,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1644413948] [2024-10-24 05:01:04,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 05:01:04,750 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 05:01:04,750 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 05:01:04,752 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) [2024-10-24 05:01:04,753 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-24 05:01:05,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 05:01:05,018 INFO L255 TraceCheckSpWp]: Trace formula consists of 418 conjuncts, 88 conjuncts are in the unsatisfiable core [2024-10-24 05:01:05,025 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 05:01:06,611 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 05:01:06,611 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 05:01:09,598 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 05:01:09,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1644413948] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 05:01:09,598 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 05:01:09,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 23, 23] total 61 [2024-10-24 05:01:09,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99763911] [2024-10-24 05:01:09,598 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 05:01:09,599 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2024-10-24 05:01:09,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 05:01:09,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2024-10-24 05:01:09,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=314, Invalid=3468, Unknown=0, NotChecked=0, Total=3782 [2024-10-24 05:01:09,601 INFO L87 Difference]: Start difference. First operand 1474 states and 2057 transitions. Second operand has 62 states, 62 states have (on average 3.032258064516129) internal successors, (188), 61 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 05:01:11,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 05:01:11,397 INFO L93 Difference]: Finished difference Result 4410 states and 6215 transitions. [2024-10-24 05:01:11,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2024-10-24 05:01:11,398 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 62 states have (on average 3.032258064516129) internal successors, (188), 61 states have internal predecessors, (188), 0 states have call successors, (0), 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 80 [2024-10-24 05:01:11,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 05:01:11,407 INFO L225 Difference]: With dead ends: 4410 [2024-10-24 05:01:11,407 INFO L226 Difference]: Without dead ends: 3293 [2024-10-24 05:01:11,411 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 116 SyntacticMatches, 1 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1907 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=437, Invalid=5569, Unknown=0, NotChecked=0, Total=6006 [2024-10-24 05:01:11,412 INFO L432 NwaCegarLoop]: 155 mSDtfsCounter, 401 mSDsluCounter, 4945 mSDsCounter, 0 mSdLazyCounter, 2387 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 401 SdHoareTripleChecker+Valid, 5100 SdHoareTripleChecker+Invalid, 2403 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 2387 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-10-24 05:01:11,412 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [401 Valid, 5100 Invalid, 2403 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 2387 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-10-24 05:01:11,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3293 states. [2024-10-24 05:01:11,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3293 to 2647. [2024-10-24 05:01:11,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2647 states, 2646 states have (on average 1.4300831443688586) internal successors, (3784), 2646 states have internal predecessors, (3784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 05:01:11,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2647 states to 2647 states and 3784 transitions. [2024-10-24 05:01:11,484 INFO L78 Accepts]: Start accepts. Automaton has 2647 states and 3784 transitions. Word has length 80 [2024-10-24 05:01:11,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 05:01:11,485 INFO L471 AbstractCegarLoop]: Abstraction has 2647 states and 3784 transitions. [2024-10-24 05:01:11,485 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 62 states have (on average 3.032258064516129) internal successors, (188), 61 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 05:01:11,485 INFO L276 IsEmpty]: Start isEmpty. Operand 2647 states and 3784 transitions. [2024-10-24 05:01:11,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2024-10-24 05:01:11,486 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 05:01:11,486 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-24 05:01:11,504 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-10-24 05:01:11,687 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 05:01:11,687 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 05:01:11,687 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 05:01:11,687 INFO L85 PathProgramCache]: Analyzing trace with hash 638968606, now seen corresponding path program 1 times [2024-10-24 05:01:11,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 05:01:11,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1229599235] [2024-10-24 05:01:11,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 05:01:11,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 05:01:11,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 05:01:12,883 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 05:01:12,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 05:01:12,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1229599235] [2024-10-24 05:01:12,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1229599235] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 05:01:12,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2025166138] [2024-10-24 05:01:12,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 05:01:12,885 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 05:01:12,885 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 05:01:12,887 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) [2024-10-24 05:01:12,888 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-24 05:01:13,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 05:01:13,146 INFO L255 TraceCheckSpWp]: Trace formula consists of 421 conjuncts, 109 conjuncts are in the unsatisfiable core [2024-10-24 05:01:13,151 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 05:01:14,159 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 05:01:14,160 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 05:01:14,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2025166138] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 05:01:14,160 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 05:01:14,160 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [19] total 35 [2024-10-24 05:01:14,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219134440] [2024-10-24 05:01:14,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 05:01:14,161 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-10-24 05:01:14,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 05:01:14,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-10-24 05:01:14,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=1135, Unknown=0, NotChecked=0, Total=1260 [2024-10-24 05:01:14,162 INFO L87 Difference]: Start difference. First operand 2647 states and 3784 transitions. Second operand has 18 states, 18 states have (on average 4.5) internal successors, (81), 17 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 05:01:14,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 05:01:14,860 INFO L93 Difference]: Finished difference Result 3878 states and 5559 transitions. [2024-10-24 05:01:14,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-10-24 05:01:14,861 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.5) internal successors, (81), 17 states have internal predecessors, (81), 0 states have call successors, (0), 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 81 [2024-10-24 05:01:14,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 05:01:14,866 INFO L225 Difference]: With dead ends: 3878 [2024-10-24 05:01:14,866 INFO L226 Difference]: Without dead ends: 2657 [2024-10-24 05:01:14,869 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 366 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=228, Invalid=2124, Unknown=0, NotChecked=0, Total=2352 [2024-10-24 05:01:14,869 INFO L432 NwaCegarLoop]: 111 mSDtfsCounter, 81 mSDsluCounter, 1382 mSDsCounter, 0 mSdLazyCounter, 743 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 1493 SdHoareTripleChecker+Invalid, 745 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 743 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-24 05:01:14,870 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 1493 Invalid, 745 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 743 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-24 05:01:14,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2657 states. [2024-10-24 05:01:14,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2657 to 2656. [2024-10-24 05:01:14,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2656 states, 2655 states have (on average 1.4290018832391713) internal successors, (3794), 2655 states have internal predecessors, (3794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 05:01:14,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2656 states to 2656 states and 3794 transitions. [2024-10-24 05:01:14,922 INFO L78 Accepts]: Start accepts. Automaton has 2656 states and 3794 transitions. Word has length 81 [2024-10-24 05:01:14,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 05:01:14,922 INFO L471 AbstractCegarLoop]: Abstraction has 2656 states and 3794 transitions. [2024-10-24 05:01:14,922 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.5) internal successors, (81), 17 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 05:01:14,922 INFO L276 IsEmpty]: Start isEmpty. Operand 2656 states and 3794 transitions. [2024-10-24 05:01:14,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2024-10-24 05:01:14,923 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 05:01:14,923 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-24 05:01:14,943 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-10-24 05:01:15,124 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2024-10-24 05:01:15,124 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 05:01:15,125 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 05:01:15,125 INFO L85 PathProgramCache]: Analyzing trace with hash 518831765, now seen corresponding path program 1 times [2024-10-24 05:01:15,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 05:01:15,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600757631] [2024-10-24 05:01:15,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 05:01:15,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 05:01:15,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat