./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_50-while_file-34.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 803cd42f Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_50-while_file-34.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 125f40803e1b985402482e09336346a774ad0c00eff4ec5b89ac9ebb2ee5c085 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-803cd42-m [2024-11-22 11:12:42,388 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-22 11:12:42,440 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-22 11:12:42,446 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-22 11:12:42,447 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-22 11:12:42,461 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-22 11:12:42,462 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-22 11:12:42,463 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-22 11:12:42,464 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-22 11:12:42,464 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-22 11:12:42,464 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-22 11:12:42,464 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-22 11:12:42,465 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-22 11:12:42,465 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-22 11:12:42,465 INFO L153 SettingsManager]: * Use SBE=true [2024-11-22 11:12:42,466 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-22 11:12:42,466 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-22 11:12:42,466 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-22 11:12:42,466 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-22 11:12:42,467 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-22 11:12:42,468 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-22 11:12:42,470 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-22 11:12:42,470 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-22 11:12:42,470 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-22 11:12:42,471 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-22 11:12:42,471 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-22 11:12:42,471 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-22 11:12:42,471 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-22 11:12:42,471 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-22 11:12:42,472 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-22 11:12:42,472 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-22 11:12:42,472 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-22 11:12:42,472 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 11:12:42,472 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-22 11:12:42,473 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-22 11:12:42,473 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-22 11:12:42,473 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-22 11:12:42,474 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-22 11:12:42,474 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-22 11:12:42,475 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-22 11:12:42,475 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-22 11:12:42,476 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-22 11:12:42,476 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 125f40803e1b985402482e09336346a774ad0c00eff4ec5b89ac9ebb2ee5c085 [2024-11-22 11:12:42,675 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-22 11:12:42,698 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-22 11:12:42,701 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-22 11:12:42,702 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-22 11:12:42,702 INFO L274 PluginConnector]: CDTParser initialized [2024-11-22 11:12:42,703 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_50-while_file-34.i [2024-11-22 11:12:43,932 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-22 11:12:44,103 INFO L384 CDTParser]: Found 1 translation units. [2024-11-22 11:12:44,104 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_50-while_file-34.i [2024-11-22 11:12:44,113 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/25c28d35d/cb65f064aeb5448ab979784cfd027cdf/FLAGb938ec6be [2024-11-22 11:12:44,498 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/25c28d35d/cb65f064aeb5448ab979784cfd027cdf [2024-11-22 11:12:44,501 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-22 11:12:44,502 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-22 11:12:44,503 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-22 11:12:44,503 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-22 11:12:44,507 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-22 11:12:44,508 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 11:12:44" (1/1) ... [2024-11-22 11:12:44,509 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@337255b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:12:44, skipping insertion in model container [2024-11-22 11:12:44,509 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 11:12:44" (1/1) ... [2024-11-22 11:12:44,530 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-22 11:12:44,680 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_50-while_file-34.i[915,928] [2024-11-22 11:12:44,729 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 11:12:44,737 INFO L200 MainTranslator]: Completed pre-run [2024-11-22 11:12:44,746 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_50-while_file-34.i[915,928] [2024-11-22 11:12:44,765 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 11:12:44,782 INFO L204 MainTranslator]: Completed translation [2024-11-22 11:12:44,783 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:12:44 WrapperNode [2024-11-22 11:12:44,783 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-22 11:12:44,784 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-22 11:12:44,784 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-22 11:12:44,784 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-22 11:12:44,790 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:12:44" (1/1) ... [2024-11-22 11:12:44,797 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:12:44" (1/1) ... [2024-11-22 11:12:44,827 INFO L138 Inliner]: procedures = 26, calls = 26, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 176 [2024-11-22 11:12:44,827 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-22 11:12:44,828 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-22 11:12:44,828 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-22 11:12:44,828 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-22 11:12:44,840 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:12:44" (1/1) ... [2024-11-22 11:12:44,841 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:12:44" (1/1) ... [2024-11-22 11:12:44,844 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:12:44" (1/1) ... [2024-11-22 11:12:44,868 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-22 11:12:44,868 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:12:44" (1/1) ... [2024-11-22 11:12:44,869 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:12:44" (1/1) ... [2024-11-22 11:12:44,874 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:12:44" (1/1) ... [2024-11-22 11:12:44,878 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:12:44" (1/1) ... [2024-11-22 11:12:44,880 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:12:44" (1/1) ... [2024-11-22 11:12:44,883 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:12:44" (1/1) ... [2024-11-22 11:12:44,885 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-22 11:12:44,886 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-22 11:12:44,886 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-22 11:12:44,886 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-22 11:12:44,887 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:12:44" (1/1) ... [2024-11-22 11:12:44,891 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 11:12:44,900 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 11:12:44,915 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-22 11:12:44,921 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-22 11:12:44,959 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-22 11:12:44,959 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-22 11:12:44,960 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-22 11:12:44,960 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-22 11:12:44,960 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-22 11:12:44,960 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-22 11:12:45,020 INFO L238 CfgBuilder]: Building ICFG [2024-11-22 11:12:45,024 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-22 11:12:45,342 INFO L? ?]: Removed 30 outVars from TransFormulas that were not future-live. [2024-11-22 11:12:45,342 INFO L287 CfgBuilder]: Performing block encoding [2024-11-22 11:12:45,359 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-22 11:12:45,359 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-22 11:12:45,359 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 11:12:45 BoogieIcfgContainer [2024-11-22 11:12:45,360 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-22 11:12:45,361 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-22 11:12:45,361 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-22 11:12:45,364 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-22 11:12:45,365 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 11:12:44" (1/3) ... [2024-11-22 11:12:45,366 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3326c7ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 11:12:45, skipping insertion in model container [2024-11-22 11:12:45,366 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:12:44" (2/3) ... [2024-11-22 11:12:45,367 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3326c7ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 11:12:45, skipping insertion in model container [2024-11-22 11:12:45,367 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 11:12:45" (3/3) ... [2024-11-22 11:12:45,368 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_loopvsstraightlinecode_50-while_file-34.i [2024-11-22 11:12:45,381 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-22 11:12:45,381 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-22 11:12:45,438 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-22 11:12:45,443 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;@4bce7648, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-22 11:12:45,444 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-22 11:12:45,448 INFO L276 IsEmpty]: Start isEmpty. Operand has 71 states, 55 states have (on average 1.490909090909091) internal successors, (82), 56 states have internal predecessors, (82), 13 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2024-11-22 11:12:45,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2024-11-22 11:12:45,458 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 11:12:45,459 INFO L215 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 11:12:45,459 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 11:12:45,464 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 11:12:45,464 INFO L85 PathProgramCache]: Analyzing trace with hash -1167158208, now seen corresponding path program 1 times [2024-11-22 11:12:45,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 11:12:45,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [293843749] [2024-11-22 11:12:45,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:12:45,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 11:12:45,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:12:45,682 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 288 trivial. 0 not checked. [2024-11-22 11:12:45,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 11:12:45,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [293843749] [2024-11-22 11:12:45,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [293843749] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 11:12:45,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1534923002] [2024-11-22 11:12:45,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:12:45,683 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 11:12:45,683 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 11:12:45,686 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 11:12:45,688 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-22 11:12:45,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:12:45,769 INFO L255 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-22 11:12:45,774 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 11:12:45,792 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 288 trivial. 0 not checked. [2024-11-22 11:12:45,795 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 11:12:45,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1534923002] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 11:12:45,796 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 11:12:45,796 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-22 11:12:45,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205342297] [2024-11-22 11:12:45,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 11:12:45,801 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-22 11:12:45,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 11:12:45,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-22 11:12:45,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-22 11:12:45,821 INFO L87 Difference]: Start difference. First operand has 71 states, 55 states have (on average 1.490909090909091) internal successors, (82), 56 states have internal predecessors, (82), 13 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) Second operand has 2 states, 2 states have (on average 17.0) internal successors, (34), 2 states have internal predecessors, (34), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-22 11:12:45,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 11:12:45,847 INFO L93 Difference]: Finished difference Result 135 states and 223 transitions. [2024-11-22 11:12:45,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-22 11:12:45,849 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 17.0) internal successors, (34), 2 states have internal predecessors, (34), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) Word has length 94 [2024-11-22 11:12:45,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 11:12:45,854 INFO L225 Difference]: With dead ends: 135 [2024-11-22 11:12:45,855 INFO L226 Difference]: Without dead ends: 67 [2024-11-22 11:12:45,858 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-22 11:12:45,861 INFO L432 NwaCegarLoop]: 101 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 11:12:45,862 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 11:12:45,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2024-11-22 11:12:45,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2024-11-22 11:12:45,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 52 states have (on average 1.4423076923076923) internal successors, (75), 52 states have internal predecessors, (75), 13 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2024-11-22 11:12:45,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 101 transitions. [2024-11-22 11:12:45,918 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 101 transitions. Word has length 94 [2024-11-22 11:12:45,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 11:12:45,920 INFO L471 AbstractCegarLoop]: Abstraction has 67 states and 101 transitions. [2024-11-22 11:12:45,935 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 17.0) internal successors, (34), 2 states have internal predecessors, (34), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-22 11:12:45,935 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 101 transitions. [2024-11-22 11:12:45,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2024-11-22 11:12:45,937 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 11:12:45,938 INFO L215 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 11:12:45,947 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-22 11:12:46,143 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-22 11:12:46,144 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 11:12:46,145 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 11:12:46,145 INFO L85 PathProgramCache]: Analyzing trace with hash -1294889278, now seen corresponding path program 1 times [2024-11-22 11:12:46,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 11:12:46,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14328781] [2024-11-22 11:12:46,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:12:46,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 11:12:46,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:12:46,475 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-11-22 11:12:46,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 11:12:46,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [14328781] [2024-11-22 11:12:46,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [14328781] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 11:12:46,476 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 11:12:46,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 11:12:46,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609820042] [2024-11-22 11:12:46,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 11:12:46,477 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 11:12:46,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 11:12:46,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 11:12:46,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 11:12:46,477 INFO L87 Difference]: Start difference. First operand 67 states and 101 transitions. Second operand has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2024-11-22 11:12:46,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 11:12:46,575 INFO L93 Difference]: Finished difference Result 225 states and 342 transitions. [2024-11-22 11:12:46,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 11:12:46,576 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 94 [2024-11-22 11:12:46,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 11:12:46,578 INFO L225 Difference]: With dead ends: 225 [2024-11-22 11:12:46,578 INFO L226 Difference]: Without dead ends: 161 [2024-11-22 11:12:46,578 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-22 11:12:46,579 INFO L432 NwaCegarLoop]: 136 mSDtfsCounter, 129 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 321 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 11:12:46,579 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [129 Valid, 321 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 11:12:46,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2024-11-22 11:12:46,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 131. [2024-11-22 11:12:46,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 102 states have (on average 1.4411764705882353) internal successors, (147), 102 states have internal predecessors, (147), 26 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2024-11-22 11:12:46,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 199 transitions. [2024-11-22 11:12:46,606 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 199 transitions. Word has length 94 [2024-11-22 11:12:46,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 11:12:46,607 INFO L471 AbstractCegarLoop]: Abstraction has 131 states and 199 transitions. [2024-11-22 11:12:46,607 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2024-11-22 11:12:46,608 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 199 transitions. [2024-11-22 11:12:46,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2024-11-22 11:12:46,612 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 11:12:46,612 INFO L215 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 11:12:46,612 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-22 11:12:46,612 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 11:12:46,613 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 11:12:46,613 INFO L85 PathProgramCache]: Analyzing trace with hash 1947848368, now seen corresponding path program 1 times [2024-11-22 11:12:46,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 11:12:46,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213007019] [2024-11-22 11:12:46,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:12:46,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 11:12:46,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:12:46,819 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-11-22 11:12:46,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 11:12:46,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213007019] [2024-11-22 11:12:46,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [213007019] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 11:12:46,820 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 11:12:46,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 11:12:46,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118803497] [2024-11-22 11:12:46,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 11:12:46,821 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 11:12:46,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 11:12:46,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 11:12:46,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-22 11:12:46,823 INFO L87 Difference]: Start difference. First operand 131 states and 199 transitions. Second operand has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2024-11-22 11:12:46,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 11:12:46,970 INFO L93 Difference]: Finished difference Result 382 states and 580 transitions. [2024-11-22 11:12:46,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 11:12:46,971 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 95 [2024-11-22 11:12:46,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 11:12:46,973 INFO L225 Difference]: With dead ends: 382 [2024-11-22 11:12:46,973 INFO L226 Difference]: Without dead ends: 254 [2024-11-22 11:12:46,974 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-22 11:12:46,974 INFO L432 NwaCegarLoop]: 149 mSDtfsCounter, 158 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 305 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 11:12:46,975 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [158 Valid, 305 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 11:12:46,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2024-11-22 11:12:46,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 135. [2024-11-22 11:12:46,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 106 states have (on average 1.4245283018867925) internal successors, (151), 106 states have internal predecessors, (151), 26 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2024-11-22 11:12:46,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 203 transitions. [2024-11-22 11:12:46,996 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 203 transitions. Word has length 95 [2024-11-22 11:12:46,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 11:12:46,998 INFO L471 AbstractCegarLoop]: Abstraction has 135 states and 203 transitions. [2024-11-22 11:12:46,999 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2024-11-22 11:12:46,999 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 203 transitions. [2024-11-22 11:12:47,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2024-11-22 11:12:47,000 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 11:12:47,000 INFO L215 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 11:12:47,000 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-22 11:12:47,000 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 11:12:47,001 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 11:12:47,001 INFO L85 PathProgramCache]: Analyzing trace with hash 343445546, now seen corresponding path program 1 times [2024-11-22 11:12:47,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 11:12:47,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749041023] [2024-11-22 11:12:47,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:12:47,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 11:12:47,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:13:05,446 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-11-22 11:13:05,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 11:13:05,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749041023] [2024-11-22 11:13:05,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [749041023] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 11:13:05,450 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 11:13:05,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2024-11-22 11:13:05,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057124974] [2024-11-22 11:13:05,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 11:13:05,451 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-22 11:13:05,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 11:13:05,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-22 11:13:05,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2024-11-22 11:13:05,452 INFO L87 Difference]: Start difference. First operand 135 states and 203 transitions. Second operand has 15 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 15 states have internal predecessors, (34), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2024-11-22 11:13:08,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 11:13:08,007 INFO L93 Difference]: Finished difference Result 535 states and 786 transitions. [2024-11-22 11:13:08,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-22 11:13:08,007 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 15 states have internal predecessors, (34), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 96 [2024-11-22 11:13:08,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 11:13:08,009 INFO L225 Difference]: With dead ends: 535 [2024-11-22 11:13:08,009 INFO L226 Difference]: Without dead ends: 403 [2024-11-22 11:13:08,010 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=142, Invalid=508, Unknown=0, NotChecked=0, Total=650 [2024-11-22 11:13:08,014 INFO L432 NwaCegarLoop]: 78 mSDtfsCounter, 525 mSDsluCounter, 453 mSDsCounter, 0 mSdLazyCounter, 801 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 525 SdHoareTripleChecker+Valid, 531 SdHoareTripleChecker+Invalid, 857 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 801 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-22 11:13:08,014 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [525 Valid, 531 Invalid, 857 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 801 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-22 11:13:08,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 403 states. [2024-11-22 11:13:08,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 403 to 249. [2024-11-22 11:13:08,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 249 states, 206 states have (on average 1.4223300970873787) internal successors, (293), 206 states have internal predecessors, (293), 39 states have call successors, (39), 3 states have call predecessors, (39), 3 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2024-11-22 11:13:08,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 371 transitions. [2024-11-22 11:13:08,042 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 371 transitions. Word has length 96 [2024-11-22 11:13:08,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 11:13:08,043 INFO L471 AbstractCegarLoop]: Abstraction has 249 states and 371 transitions. [2024-11-22 11:13:08,043 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 15 states have internal predecessors, (34), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2024-11-22 11:13:08,043 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 371 transitions. [2024-11-22 11:13:08,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2024-11-22 11:13:08,046 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 11:13:08,046 INFO L215 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 11:13:08,046 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-22 11:13:08,046 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 11:13:08,047 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 11:13:08,047 INFO L85 PathProgramCache]: Analyzing trace with hash 2118452908, now seen corresponding path program 1 times [2024-11-22 11:13:08,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 11:13:08,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466486288] [2024-11-22 11:13:08,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:13:08,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 11:13:08,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:13:09,603 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-11-22 11:13:09,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 11:13:09,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466486288] [2024-11-22 11:13:09,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1466486288] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 11:13:09,604 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 11:13:09,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-22 11:13:09,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895555524] [2024-11-22 11:13:09,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 11:13:09,604 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-22 11:13:09,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 11:13:09,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-22 11:13:09,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-11-22 11:13:09,605 INFO L87 Difference]: Start difference. First operand 249 states and 371 transitions. Second operand has 9 states, 9 states have (on average 3.7777777777777777) internal successors, (34), 9 states have internal predecessors, (34), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2024-11-22 11:13:10,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 11:13:10,302 INFO L93 Difference]: Finished difference Result 608 states and 909 transitions. [2024-11-22 11:13:10,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-22 11:13:10,302 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.7777777777777777) internal successors, (34), 9 states have internal predecessors, (34), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 96 [2024-11-22 11:13:10,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 11:13:10,305 INFO L225 Difference]: With dead ends: 608 [2024-11-22 11:13:10,307 INFO L226 Difference]: Without dead ends: 460 [2024-11-22 11:13:10,308 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2024-11-22 11:13:10,311 INFO L432 NwaCegarLoop]: 62 mSDtfsCounter, 398 mSDsluCounter, 281 mSDsCounter, 0 mSdLazyCounter, 364 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 398 SdHoareTripleChecker+Valid, 343 SdHoareTripleChecker+Invalid, 412 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 364 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-22 11:13:10,311 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [398 Valid, 343 Invalid, 412 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 364 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-22 11:13:10,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 460 states. [2024-11-22 11:13:10,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 460 to 294. [2024-11-22 11:13:10,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 294 states, 251 states have (on average 1.4183266932270917) internal successors, (356), 251 states have internal predecessors, (356), 39 states have call successors, (39), 3 states have call predecessors, (39), 3 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2024-11-22 11:13:10,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 434 transitions. [2024-11-22 11:13:10,334 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 434 transitions. Word has length 96 [2024-11-22 11:13:10,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 11:13:10,334 INFO L471 AbstractCegarLoop]: Abstraction has 294 states and 434 transitions. [2024-11-22 11:13:10,335 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.7777777777777777) internal successors, (34), 9 states have internal predecessors, (34), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2024-11-22 11:13:10,335 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 434 transitions. [2024-11-22 11:13:10,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2024-11-22 11:13:10,336 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 11:13:10,337 INFO L215 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 11:13:10,337 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-22 11:13:10,337 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 11:13:10,338 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 11:13:10,338 INFO L85 PathProgramCache]: Analyzing trace with hash 1023503916, now seen corresponding path program 1 times [2024-11-22 11:13:10,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 11:13:10,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929586693] [2024-11-22 11:13:10,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:13:10,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 11:13:10,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:13:13,892 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-11-22 11:13:13,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 11:13:13,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1929586693] [2024-11-22 11:13:13,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1929586693] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 11:13:13,892 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 11:13:13,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-22 11:13:13,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675049319] [2024-11-22 11:13:13,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 11:13:13,893 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-22 11:13:13,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 11:13:13,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-22 11:13:13,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2024-11-22 11:13:13,894 INFO L87 Difference]: Start difference. First operand 294 states and 434 transitions. Second operand has 11 states, 11 states have (on average 3.090909090909091) internal successors, (34), 11 states have internal predecessors, (34), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2024-11-22 11:13:14,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 11:13:14,996 INFO L93 Difference]: Finished difference Result 602 states and 884 transitions. [2024-11-22 11:13:14,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-22 11:13:14,996 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.090909090909091) internal successors, (34), 11 states have internal predecessors, (34), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 96 [2024-11-22 11:13:14,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 11:13:14,998 INFO L225 Difference]: With dead ends: 602 [2024-11-22 11:13:14,999 INFO L226 Difference]: Without dead ends: 456 [2024-11-22 11:13:14,999 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=107, Invalid=313, Unknown=0, NotChecked=0, Total=420 [2024-11-22 11:13:15,000 INFO L432 NwaCegarLoop]: 70 mSDtfsCounter, 366 mSDsluCounter, 378 mSDsCounter, 0 mSdLazyCounter, 614 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 366 SdHoareTripleChecker+Valid, 448 SdHoareTripleChecker+Invalid, 663 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 614 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-22 11:13:15,000 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [366 Valid, 448 Invalid, 663 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 614 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-22 11:13:15,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 456 states. [2024-11-22 11:13:15,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 456 to 354. [2024-11-22 11:13:15,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 354 states, 311 states have (on average 1.459807073954984) internal successors, (454), 311 states have internal predecessors, (454), 39 states have call successors, (39), 3 states have call predecessors, (39), 3 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2024-11-22 11:13:15,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 354 states to 354 states and 532 transitions. [2024-11-22 11:13:15,023 INFO L78 Accepts]: Start accepts. Automaton has 354 states and 532 transitions. Word has length 96 [2024-11-22 11:13:15,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 11:13:15,024 INFO L471 AbstractCegarLoop]: Abstraction has 354 states and 532 transitions. [2024-11-22 11:13:15,024 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.090909090909091) internal successors, (34), 11 states have internal predecessors, (34), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2024-11-22 11:13:15,025 INFO L276 IsEmpty]: Start isEmpty. Operand 354 states and 532 transitions. [2024-11-22 11:13:15,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2024-11-22 11:13:15,025 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 11:13:15,026 INFO L215 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 11:13:15,026 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-22 11:13:15,026 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 11:13:15,026 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 11:13:15,026 INFO L85 PathProgramCache]: Analyzing trace with hash -926687525, now seen corresponding path program 1 times [2024-11-22 11:13:15,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 11:13:15,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212518401] [2024-11-22 11:13:15,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:13:15,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 11:13:15,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:13:15,985 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-11-22 11:13:15,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 11:13:15,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212518401] [2024-11-22 11:13:15,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1212518401] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 11:13:15,985 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 11:13:15,985 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-22 11:13:15,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630397416] [2024-11-22 11:13:15,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 11:13:15,986 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 11:13:15,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 11:13:15,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 11:13:15,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-22 11:13:15,987 INFO L87 Difference]: Start difference. First operand 354 states and 532 transitions. Second operand has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 6 states have internal predecessors, (34), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2024-11-22 11:13:16,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 11:13:16,276 INFO L93 Difference]: Finished difference Result 656 states and 980 transitions. [2024-11-22 11:13:16,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-22 11:13:16,276 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 6 states have internal predecessors, (34), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 96 [2024-11-22 11:13:16,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 11:13:16,278 INFO L225 Difference]: With dead ends: 656 [2024-11-22 11:13:16,278 INFO L226 Difference]: Without dead ends: 472 [2024-11-22 11:13:16,279 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2024-11-22 11:13:16,279 INFO L432 NwaCegarLoop]: 84 mSDtfsCounter, 156 mSDsluCounter, 261 mSDsCounter, 0 mSdLazyCounter, 212 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 345 SdHoareTripleChecker+Invalid, 252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-22 11:13:16,280 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [156 Valid, 345 Invalid, 252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 212 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-22 11:13:16,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 472 states. [2024-11-22 11:13:16,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 472 to 360. [2024-11-22 11:13:16,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 360 states, 317 states have (on average 1.444794952681388) internal successors, (458), 317 states have internal predecessors, (458), 39 states have call successors, (39), 3 states have call predecessors, (39), 3 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2024-11-22 11:13:16,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 360 states to 360 states and 536 transitions. [2024-11-22 11:13:16,295 INFO L78 Accepts]: Start accepts. Automaton has 360 states and 536 transitions. Word has length 96 [2024-11-22 11:13:16,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 11:13:16,295 INFO L471 AbstractCegarLoop]: Abstraction has 360 states and 536 transitions. [2024-11-22 11:13:16,295 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 6 states have internal predecessors, (34), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2024-11-22 11:13:16,296 INFO L276 IsEmpty]: Start isEmpty. Operand 360 states and 536 transitions. [2024-11-22 11:13:16,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2024-11-22 11:13:16,296 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 11:13:16,296 INFO L215 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 11:13:16,297 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-22 11:13:16,297 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 11:13:16,297 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 11:13:16,297 INFO L85 PathProgramCache]: Analyzing trace with hash -667671704, now seen corresponding path program 1 times [2024-11-22 11:13:16,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 11:13:16,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547744408] [2024-11-22 11:13:16,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:13:16,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 11:13:16,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:13:16,447 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-11-22 11:13:16,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 11:13:16,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547744408] [2024-11-22 11:13:16,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [547744408] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 11:13:16,447 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 11:13:16,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 11:13:16,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010337841] [2024-11-22 11:13:16,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 11:13:16,448 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 11:13:16,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 11:13:16,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 11:13:16,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 11:13:16,449 INFO L87 Difference]: Start difference. First operand 360 states and 536 transitions. Second operand has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2024-11-22 11:13:16,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 11:13:16,579 INFO L93 Difference]: Finished difference Result 576 states and 859 transitions. [2024-11-22 11:13:16,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 11:13:16,580 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 96 [2024-11-22 11:13:16,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 11:13:16,581 INFO L225 Difference]: With dead ends: 576 [2024-11-22 11:13:16,582 INFO L226 Difference]: Without dead ends: 350 [2024-11-22 11:13:16,582 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-22 11:13:16,582 INFO L432 NwaCegarLoop]: 80 mSDtfsCounter, 81 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 230 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 11:13:16,583 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 230 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 11:13:16,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 350 states. [2024-11-22 11:13:16,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 350 to 322. [2024-11-22 11:13:16,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 322 states, 279 states have (on average 1.4050179211469533) internal successors, (392), 279 states have internal predecessors, (392), 39 states have call successors, (39), 3 states have call predecessors, (39), 3 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2024-11-22 11:13:16,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 322 states to 322 states and 470 transitions. [2024-11-22 11:13:16,599 INFO L78 Accepts]: Start accepts. Automaton has 322 states and 470 transitions. Word has length 96 [2024-11-22 11:13:16,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 11:13:16,601 INFO L471 AbstractCegarLoop]: Abstraction has 322 states and 470 transitions. [2024-11-22 11:13:16,601 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2024-11-22 11:13:16,601 INFO L276 IsEmpty]: Start isEmpty. Operand 322 states and 470 transitions. [2024-11-22 11:13:16,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2024-11-22 11:13:16,602 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 11:13:16,602 INFO L215 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 11:13:16,602 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-22 11:13:16,603 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 11:13:16,603 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 11:13:16,603 INFO L85 PathProgramCache]: Analyzing trace with hash 1326331525, now seen corresponding path program 1 times [2024-11-22 11:13:16,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 11:13:16,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849994556] [2024-11-22 11:13:16,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:13:16,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 11:13:16,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:13:18,482 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-11-22 11:13:18,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 11:13:18,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849994556] [2024-11-22 11:13:18,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [849994556] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 11:13:18,482 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 11:13:18,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-22 11:13:18,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624025311] [2024-11-22 11:13:18,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 11:13:18,483 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-22 11:13:18,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 11:13:18,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-22 11:13:18,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-11-22 11:13:18,483 INFO L87 Difference]: Start difference. First operand 322 states and 470 transitions. Second operand has 10 states, 10 states have (on average 3.5) internal successors, (35), 10 states have internal predecessors, (35), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2024-11-22 11:13:19,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 11:13:19,433 INFO L93 Difference]: Finished difference Result 647 states and 936 transitions. [2024-11-22 11:13:19,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-22 11:13:19,434 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.5) internal successors, (35), 10 states have internal predecessors, (35), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 97 [2024-11-22 11:13:19,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 11:13:19,437 INFO L225 Difference]: With dead ends: 647 [2024-11-22 11:13:19,437 INFO L226 Difference]: Without dead ends: 515 [2024-11-22 11:13:19,437 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2024-11-22 11:13:19,437 INFO L432 NwaCegarLoop]: 111 mSDtfsCounter, 254 mSDsluCounter, 465 mSDsCounter, 0 mSdLazyCounter, 375 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 254 SdHoareTripleChecker+Valid, 576 SdHoareTripleChecker+Invalid, 378 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 375 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-22 11:13:19,438 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [254 Valid, 576 Invalid, 378 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 375 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-22 11:13:19,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 515 states. [2024-11-22 11:13:19,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 515 to 358. [2024-11-22 11:13:19,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 358 states, 313 states have (on average 1.3738019169329074) internal successors, (430), 313 states have internal predecessors, (430), 39 states have call successors, (39), 5 states have call predecessors, (39), 5 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2024-11-22 11:13:19,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358 states to 358 states and 508 transitions. [2024-11-22 11:13:19,458 INFO L78 Accepts]: Start accepts. Automaton has 358 states and 508 transitions. Word has length 97 [2024-11-22 11:13:19,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 11:13:19,459 INFO L471 AbstractCegarLoop]: Abstraction has 358 states and 508 transitions. [2024-11-22 11:13:19,459 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.5) internal successors, (35), 10 states have internal predecessors, (35), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2024-11-22 11:13:19,459 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states and 508 transitions. [2024-11-22 11:13:19,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2024-11-22 11:13:19,460 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 11:13:19,460 INFO L215 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 11:13:19,460 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-22 11:13:19,460 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 11:13:19,460 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 11:13:19,461 INFO L85 PathProgramCache]: Analyzing trace with hash 491239673, now seen corresponding path program 1 times [2024-11-22 11:13:19,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 11:13:19,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1894362317] [2024-11-22 11:13:19,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:13:19,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 11:13:19,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:13:21,467 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-11-22 11:13:21,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 11:13:21,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1894362317] [2024-11-22 11:13:21,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1894362317] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 11:13:21,468 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 11:13:21,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-22 11:13:21,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569856949] [2024-11-22 11:13:21,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 11:13:21,468 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-22 11:13:21,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 11:13:21,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-22 11:13:21,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2024-11-22 11:13:21,469 INFO L87 Difference]: Start difference. First operand 358 states and 508 transitions. Second operand has 12 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 12 states have internal predecessors, (35), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2024-11-22 11:13:23,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 11:13:23,580 INFO L93 Difference]: Finished difference Result 841 states and 1200 transitions. [2024-11-22 11:13:23,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-22 11:13:23,581 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 12 states have internal predecessors, (35), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 97 [2024-11-22 11:13:23,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 11:13:23,583 INFO L225 Difference]: With dead ends: 841 [2024-11-22 11:13:23,583 INFO L226 Difference]: Without dead ends: 625 [2024-11-22 11:13:23,583 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=142, Invalid=278, Unknown=0, NotChecked=0, Total=420 [2024-11-22 11:13:23,584 INFO L432 NwaCegarLoop]: 118 mSDtfsCounter, 287 mSDsluCounter, 343 mSDsCounter, 0 mSdLazyCounter, 512 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 287 SdHoareTripleChecker+Valid, 461 SdHoareTripleChecker+Invalid, 532 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 512 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-22 11:13:23,585 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [287 Valid, 461 Invalid, 532 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 512 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-22 11:13:23,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 625 states. [2024-11-22 11:13:23,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 625 to 441. [2024-11-22 11:13:23,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 441 states, 396 states have (on average 1.3914141414141414) internal successors, (551), 396 states have internal predecessors, (551), 39 states have call successors, (39), 5 states have call predecessors, (39), 5 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2024-11-22 11:13:23,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 441 states to 441 states and 629 transitions. [2024-11-22 11:13:23,609 INFO L78 Accepts]: Start accepts. Automaton has 441 states and 629 transitions. Word has length 97 [2024-11-22 11:13:23,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 11:13:23,609 INFO L471 AbstractCegarLoop]: Abstraction has 441 states and 629 transitions. [2024-11-22 11:13:23,609 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 12 states have internal predecessors, (35), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2024-11-22 11:13:23,609 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states and 629 transitions. [2024-11-22 11:13:23,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2024-11-22 11:13:23,610 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 11:13:23,610 INFO L215 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 11:13:23,610 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-22 11:13:23,610 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 11:13:23,611 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 11:13:23,611 INFO L85 PathProgramCache]: Analyzing trace with hash 1171298043, now seen corresponding path program 1 times [2024-11-22 11:13:23,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 11:13:23,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990138038] [2024-11-22 11:13:23,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:13:23,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 11:13:23,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:13:28,508 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-11-22 11:13:28,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 11:13:28,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [990138038] [2024-11-22 11:13:28,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [990138038] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 11:13:28,509 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 11:13:28,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2024-11-22 11:13:28,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329517591] [2024-11-22 11:13:28,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 11:13:28,510 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-22 11:13:28,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 11:13:28,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-22 11:13:28,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2024-11-22 11:13:28,511 INFO L87 Difference]: Start difference. First operand 441 states and 629 transitions. Second operand has 15 states, 15 states have (on average 2.3333333333333335) internal successors, (35), 15 states have internal predecessors, (35), 2 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-22 11:13:30,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 11:13:30,009 INFO L93 Difference]: Finished difference Result 832 states and 1170 transitions. [2024-11-22 11:13:30,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-22 11:13:30,009 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.3333333333333335) internal successors, (35), 15 states have internal predecessors, (35), 2 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 97 [2024-11-22 11:13:30,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 11:13:30,011 INFO L225 Difference]: With dead ends: 832 [2024-11-22 11:13:30,011 INFO L226 Difference]: Without dead ends: 543 [2024-11-22 11:13:30,012 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=168, Invalid=534, Unknown=0, NotChecked=0, Total=702 [2024-11-22 11:13:30,012 INFO L432 NwaCegarLoop]: 115 mSDtfsCounter, 272 mSDsluCounter, 642 mSDsCounter, 0 mSdLazyCounter, 983 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 272 SdHoareTripleChecker+Valid, 757 SdHoareTripleChecker+Invalid, 1040 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 983 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-22 11:13:30,013 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [272 Valid, 757 Invalid, 1040 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 983 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-22 11:13:30,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 543 states. [2024-11-22 11:13:30,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 543 to 441. [2024-11-22 11:13:30,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 441 states, 396 states have (on average 1.3888888888888888) internal successors, (550), 396 states have internal predecessors, (550), 39 states have call successors, (39), 5 states have call predecessors, (39), 5 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2024-11-22 11:13:30,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 441 states to 441 states and 628 transitions. [2024-11-22 11:13:30,034 INFO L78 Accepts]: Start accepts. Automaton has 441 states and 628 transitions. Word has length 97 [2024-11-22 11:13:30,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 11:13:30,034 INFO L471 AbstractCegarLoop]: Abstraction has 441 states and 628 transitions. [2024-11-22 11:13:30,034 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.3333333333333335) internal successors, (35), 15 states have internal predecessors, (35), 2 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-22 11:13:30,034 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states and 628 transitions. [2024-11-22 11:13:30,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2024-11-22 11:13:30,035 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 11:13:30,035 INFO L215 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 11:13:30,035 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-22 11:13:30,035 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 11:13:30,036 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 11:13:30,036 INFO L85 PathProgramCache]: Analyzing trace with hash -1743707403, now seen corresponding path program 1 times [2024-11-22 11:13:30,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 11:13:30,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718339016] [2024-11-22 11:13:30,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:13:30,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 11:13:30,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:13:36,714 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-11-22 11:13:36,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 11:13:36,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718339016] [2024-11-22 11:13:36,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [718339016] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 11:13:36,715 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 11:13:36,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2024-11-22 11:13:36,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928544672] [2024-11-22 11:13:36,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 11:13:36,716 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-22 11:13:36,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 11:13:36,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-22 11:13:36,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2024-11-22 11:13:36,716 INFO L87 Difference]: Start difference. First operand 441 states and 628 transitions. Second operand has 16 states, 16 states have (on average 2.25) internal successors, (36), 16 states have internal predecessors, (36), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2024-11-22 11:13:38,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 11:13:38,353 INFO L93 Difference]: Finished difference Result 785 states and 1112 transitions. [2024-11-22 11:13:38,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-22 11:13:38,354 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.25) internal successors, (36), 16 states have internal predecessors, (36), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 98 [2024-11-22 11:13:38,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 11:13:38,357 INFO L225 Difference]: With dead ends: 785 [2024-11-22 11:13:38,357 INFO L226 Difference]: Without dead ends: 557 [2024-11-22 11:13:38,357 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 175 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=246, Invalid=746, Unknown=0, NotChecked=0, Total=992 [2024-11-22 11:13:38,358 INFO L432 NwaCegarLoop]: 71 mSDtfsCounter, 402 mSDsluCounter, 400 mSDsCounter, 0 mSdLazyCounter, 599 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 402 SdHoareTripleChecker+Valid, 471 SdHoareTripleChecker+Invalid, 647 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 599 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-22 11:13:38,358 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [402 Valid, 471 Invalid, 647 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 599 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-22 11:13:38,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 557 states. [2024-11-22 11:13:38,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 557 to 421. [2024-11-22 11:13:38,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 421 states, 376 states have (on average 1.3936170212765957) internal successors, (524), 376 states have internal predecessors, (524), 39 states have call successors, (39), 5 states have call predecessors, (39), 5 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2024-11-22 11:13:38,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 421 states to 421 states and 602 transitions. [2024-11-22 11:13:38,393 INFO L78 Accepts]: Start accepts. Automaton has 421 states and 602 transitions. Word has length 98 [2024-11-22 11:13:38,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 11:13:38,393 INFO L471 AbstractCegarLoop]: Abstraction has 421 states and 602 transitions. [2024-11-22 11:13:38,394 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.25) internal successors, (36), 16 states have internal predecessors, (36), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2024-11-22 11:13:38,394 INFO L276 IsEmpty]: Start isEmpty. Operand 421 states and 602 transitions. [2024-11-22 11:13:38,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2024-11-22 11:13:38,395 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 11:13:38,395 INFO L215 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 11:13:38,395 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-22 11:13:38,395 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 11:13:38,396 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 11:13:38,396 INFO L85 PathProgramCache]: Analyzing trace with hash -1063649033, now seen corresponding path program 1 times [2024-11-22 11:13:38,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 11:13:38,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725575845] [2024-11-22 11:13:38,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:13:38,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 11:13:38,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:13:39,949 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-11-22 11:13:39,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 11:13:39,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [725575845] [2024-11-22 11:13:39,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [725575845] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 11:13:39,949 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 11:13:39,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-22 11:13:39,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254373179] [2024-11-22 11:13:39,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 11:13:39,950 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-22 11:13:39,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 11:13:39,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-22 11:13:39,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-22 11:13:39,950 INFO L87 Difference]: Start difference. First operand 421 states and 602 transitions. Second operand has 8 states, 8 states have (on average 4.5) internal successors, (36), 8 states have internal predecessors, (36), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2024-11-22 11:13:40,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 11:13:40,618 INFO L93 Difference]: Finished difference Result 717 states and 1016 transitions. [2024-11-22 11:13:40,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-22 11:13:40,619 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 8 states have internal predecessors, (36), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 98 [2024-11-22 11:13:40,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 11:13:40,621 INFO L225 Difference]: With dead ends: 717 [2024-11-22 11:13:40,621 INFO L226 Difference]: Without dead ends: 485 [2024-11-22 11:13:40,622 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2024-11-22 11:13:40,623 INFO L432 NwaCegarLoop]: 73 mSDtfsCounter, 210 mSDsluCounter, 305 mSDsCounter, 0 mSdLazyCounter, 373 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 210 SdHoareTripleChecker+Valid, 378 SdHoareTripleChecker+Invalid, 416 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 373 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-22 11:13:40,623 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [210 Valid, 378 Invalid, 416 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 373 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-22 11:13:40,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 485 states. [2024-11-22 11:13:40,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 485 to 411. [2024-11-22 11:13:40,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 411 states, 366 states have (on average 1.3934426229508197) internal successors, (510), 366 states have internal predecessors, (510), 39 states have call successors, (39), 5 states have call predecessors, (39), 5 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2024-11-22 11:13:40,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 411 states to 411 states and 588 transitions. [2024-11-22 11:13:40,644 INFO L78 Accepts]: Start accepts. Automaton has 411 states and 588 transitions. Word has length 98 [2024-11-22 11:13:40,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 11:13:40,645 INFO L471 AbstractCegarLoop]: Abstraction has 411 states and 588 transitions. [2024-11-22 11:13:40,645 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 8 states have internal predecessors, (36), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2024-11-22 11:13:40,645 INFO L276 IsEmpty]: Start isEmpty. Operand 411 states and 588 transitions. [2024-11-22 11:13:40,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2024-11-22 11:13:40,646 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 11:13:40,646 INFO L215 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 11:13:40,646 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-22 11:13:40,646 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 11:13:40,646 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 11:13:40,647 INFO L85 PathProgramCache]: Analyzing trace with hash -448582361, now seen corresponding path program 1 times [2024-11-22 11:13:40,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 11:13:40,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996112325] [2024-11-22 11:13:40,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:13:40,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 11:13:40,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:13:43,135 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-11-22 11:13:43,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 11:13:43,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996112325] [2024-11-22 11:13:43,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1996112325] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 11:13:43,136 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 11:13:43,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-22 11:13:43,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312094036] [2024-11-22 11:13:43,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 11:13:43,136 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-22 11:13:43,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 11:13:43,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-22 11:13:43,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2024-11-22 11:13:43,137 INFO L87 Difference]: Start difference. First operand 411 states and 588 transitions. Second operand has 12 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2024-11-22 11:13:46,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 11:13:46,899 INFO L93 Difference]: Finished difference Result 922 states and 1314 transitions. [2024-11-22 11:13:46,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-22 11:13:46,900 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 98 [2024-11-22 11:13:46,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 11:13:46,902 INFO L225 Difference]: With dead ends: 922 [2024-11-22 11:13:46,902 INFO L226 Difference]: Without dead ends: 704 [2024-11-22 11:13:46,902 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=151, Invalid=355, Unknown=0, NotChecked=0, Total=506 [2024-11-22 11:13:46,903 INFO L432 NwaCegarLoop]: 100 mSDtfsCounter, 375 mSDsluCounter, 321 mSDsCounter, 0 mSdLazyCounter, 476 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 375 SdHoareTripleChecker+Valid, 421 SdHoareTripleChecker+Invalid, 484 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 476 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-22 11:13:46,903 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [375 Valid, 421 Invalid, 484 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 476 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-22 11:13:46,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 704 states. [2024-11-22 11:13:46,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 704 to 427. [2024-11-22 11:13:46,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 427 states, 382 states have (on average 1.387434554973822) internal successors, (530), 382 states have internal predecessors, (530), 39 states have call successors, (39), 5 states have call predecessors, (39), 5 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2024-11-22 11:13:46,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 427 states to 427 states and 608 transitions. [2024-11-22 11:13:46,923 INFO L78 Accepts]: Start accepts. Automaton has 427 states and 608 transitions. Word has length 98 [2024-11-22 11:13:46,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 11:13:46,924 INFO L471 AbstractCegarLoop]: Abstraction has 427 states and 608 transitions. [2024-11-22 11:13:46,924 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2024-11-22 11:13:46,924 INFO L276 IsEmpty]: Start isEmpty. Operand 427 states and 608 transitions. [2024-11-22 11:13:46,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2024-11-22 11:13:46,925 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 11:13:46,925 INFO L215 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 11:13:46,925 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-22 11:13:46,925 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 11:13:46,925 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 11:13:46,925 INFO L85 PathProgramCache]: Analyzing trace with hash 1326425001, now seen corresponding path program 1 times [2024-11-22 11:13:46,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 11:13:46,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1347138532] [2024-11-22 11:13:46,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:13:46,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 11:13:46,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:13:49,428 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-11-22 11:13:49,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 11:13:49,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1347138532] [2024-11-22 11:13:49,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1347138532] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 11:13:49,428 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 11:13:49,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-22 11:13:49,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467222805] [2024-11-22 11:13:49,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 11:13:49,429 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-22 11:13:49,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 11:13:49,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-22 11:13:49,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-11-22 11:13:49,429 INFO L87 Difference]: Start difference. First operand 427 states and 608 transitions. Second operand has 12 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2024-11-22 11:13:52,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 11:13:52,625 INFO L93 Difference]: Finished difference Result 917 states and 1302 transitions. [2024-11-22 11:13:52,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-22 11:13:52,625 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 98 [2024-11-22 11:13:52,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 11:13:52,628 INFO L225 Difference]: With dead ends: 917 [2024-11-22 11:13:52,628 INFO L226 Difference]: Without dead ends: 687 [2024-11-22 11:13:52,629 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=177, Invalid=473, Unknown=0, NotChecked=0, Total=650 [2024-11-22 11:13:52,631 INFO L432 NwaCegarLoop]: 110 mSDtfsCounter, 406 mSDsluCounter, 298 mSDsCounter, 0 mSdLazyCounter, 464 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 406 SdHoareTripleChecker+Valid, 408 SdHoareTripleChecker+Invalid, 476 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 464 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-22 11:13:52,631 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [406 Valid, 408 Invalid, 476 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 464 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-22 11:13:52,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 687 states. [2024-11-22 11:13:52,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 687 to 449. [2024-11-22 11:13:52,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 449 states, 404 states have (on average 1.386138613861386) internal successors, (560), 404 states have internal predecessors, (560), 39 states have call successors, (39), 5 states have call predecessors, (39), 5 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2024-11-22 11:13:52,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 449 states to 449 states and 638 transitions. [2024-11-22 11:13:52,664 INFO L78 Accepts]: Start accepts. Automaton has 449 states and 638 transitions. Word has length 98 [2024-11-22 11:13:52,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 11:13:52,665 INFO L471 AbstractCegarLoop]: Abstraction has 449 states and 638 transitions. [2024-11-22 11:13:52,665 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2024-11-22 11:13:52,665 INFO L276 IsEmpty]: Start isEmpty. Operand 449 states and 638 transitions. [2024-11-22 11:13:52,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2024-11-22 11:13:52,666 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 11:13:52,666 INFO L215 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 11:13:52,666 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-22 11:13:52,666 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 11:13:52,666 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 11:13:52,667 INFO L85 PathProgramCache]: Analyzing trace with hash 231476009, now seen corresponding path program 1 times [2024-11-22 11:13:52,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 11:13:52,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839128644] [2024-11-22 11:13:52,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:13:52,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 11:13:52,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:13:56,783 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-11-22 11:13:56,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 11:13:56,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [839128644] [2024-11-22 11:13:56,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [839128644] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 11:13:56,783 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 11:13:56,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-22 11:13:56,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718173792] [2024-11-22 11:13:56,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 11:13:56,783 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-22 11:13:56,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 11:13:56,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-22 11:13:56,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-11-22 11:13:56,784 INFO L87 Difference]: Start difference. First operand 449 states and 638 transitions. Second operand has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2024-11-22 11:13:58,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 11:13:58,219 INFO L93 Difference]: Finished difference Result 920 states and 1301 transitions. [2024-11-22 11:13:58,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-22 11:13:58,219 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 98 [2024-11-22 11:13:58,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 11:13:58,221 INFO L225 Difference]: With dead ends: 920 [2024-11-22 11:13:58,221 INFO L226 Difference]: Without dead ends: 603 [2024-11-22 11:13:58,222 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=77, Invalid=229, Unknown=0, NotChecked=0, Total=306 [2024-11-22 11:13:58,222 INFO L432 NwaCegarLoop]: 70 mSDtfsCounter, 298 mSDsluCounter, 327 mSDsCounter, 0 mSdLazyCounter, 541 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 298 SdHoareTripleChecker+Valid, 397 SdHoareTripleChecker+Invalid, 593 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 541 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-22 11:13:58,222 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [298 Valid, 397 Invalid, 593 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 541 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-22 11:13:58,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 603 states. [2024-11-22 11:13:58,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 603 to 457. [2024-11-22 11:13:58,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 457 states, 412 states have (on average 1.3762135922330097) internal successors, (567), 412 states have internal predecessors, (567), 39 states have call successors, (39), 5 states have call predecessors, (39), 5 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2024-11-22 11:13:58,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 457 states to 457 states and 645 transitions. [2024-11-22 11:13:58,249 INFO L78 Accepts]: Start accepts. Automaton has 457 states and 645 transitions. Word has length 98 [2024-11-22 11:13:58,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 11:13:58,249 INFO L471 AbstractCegarLoop]: Abstraction has 457 states and 645 transitions. [2024-11-22 11:13:58,249 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2024-11-22 11:13:58,249 INFO L276 IsEmpty]: Start isEmpty. Operand 457 states and 645 transitions. [2024-11-22 11:13:58,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2024-11-22 11:13:58,250 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 11:13:58,250 INFO L215 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 11:13:58,250 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-22 11:13:58,251 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 11:13:58,252 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 11:13:58,252 INFO L85 PathProgramCache]: Analyzing trace with hash 2006483371, now seen corresponding path program 1 times [2024-11-22 11:13:58,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 11:13:58,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714003701] [2024-11-22 11:13:58,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:13:58,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 11:13:58,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:14:03,918 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-11-22 11:14:03,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 11:14:03,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714003701] [2024-11-22 11:14:03,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [714003701] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 11:14:03,919 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 11:14:03,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-11-22 11:14:03,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136748667] [2024-11-22 11:14:03,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 11:14:03,919 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-22 11:14:03,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 11:14:03,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-22 11:14:03,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-11-22 11:14:03,920 INFO L87 Difference]: Start difference. First operand 457 states and 645 transitions. Second operand has 13 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2024-11-22 11:14:05,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 11:14:05,634 INFO L93 Difference]: Finished difference Result 807 states and 1121 transitions. [2024-11-22 11:14:05,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-22 11:14:05,634 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 98 [2024-11-22 11:14:05,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 11:14:05,636 INFO L225 Difference]: With dead ends: 807 [2024-11-22 11:14:05,636 INFO L226 Difference]: Without dead ends: 565 [2024-11-22 11:14:05,637 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=122, Invalid=384, Unknown=0, NotChecked=0, Total=506 [2024-11-22 11:14:05,637 INFO L432 NwaCegarLoop]: 78 mSDtfsCounter, 268 mSDsluCounter, 381 mSDsCounter, 0 mSdLazyCounter, 661 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 268 SdHoareTripleChecker+Valid, 459 SdHoareTripleChecker+Invalid, 709 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 661 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-22 11:14:05,637 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [268 Valid, 459 Invalid, 709 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 661 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-22 11:14:05,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 565 states. [2024-11-22 11:14:05,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 565 to 465. [2024-11-22 11:14:05,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 465 states, 420 states have (on average 1.369047619047619) internal successors, (575), 420 states have internal predecessors, (575), 39 states have call successors, (39), 5 states have call predecessors, (39), 5 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2024-11-22 11:14:05,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 465 states to 465 states and 653 transitions. [2024-11-22 11:14:05,659 INFO L78 Accepts]: Start accepts. Automaton has 465 states and 653 transitions. Word has length 98 [2024-11-22 11:14:05,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 11:14:05,660 INFO L471 AbstractCegarLoop]: Abstraction has 465 states and 653 transitions. [2024-11-22 11:14:05,660 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2024-11-22 11:14:05,660 INFO L276 IsEmpty]: Start isEmpty. Operand 465 states and 653 transitions. [2024-11-22 11:14:05,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2024-11-22 11:14:05,661 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 11:14:05,661 INFO L215 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 11:14:05,661 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-22 11:14:05,661 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 11:14:05,661 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 11:14:05,661 INFO L85 PathProgramCache]: Analyzing trace with hash 1958487327, now seen corresponding path program 1 times [2024-11-22 11:14:05,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 11:14:05,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825462043] [2024-11-22 11:14:05,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:14:05,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 11:14:05,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat