./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-1loop_file-31.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_100-1loop_file-31.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 0facbc53e01d120e629a50b5211a29fd2bc23d2bc5e324a9623e8d1b2c65da11 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-803cd42-m [2024-11-22 10:16:44,711 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-22 10:16:44,792 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-22 10:16:44,796 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-22 10:16:44,796 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-22 10:16:44,820 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-22 10:16:44,821 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-22 10:16:44,821 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-22 10:16:44,821 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-22 10:16:44,822 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-22 10:16:44,822 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-22 10:16:44,822 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-22 10:16:44,822 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-22 10:16:44,823 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-22 10:16:44,823 INFO L153 SettingsManager]: * Use SBE=true [2024-11-22 10:16:44,823 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-22 10:16:44,823 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-22 10:16:44,824 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-22 10:16:44,824 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-22 10:16:44,824 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-22 10:16:44,824 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-22 10:16:44,825 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-22 10:16:44,825 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-22 10:16:44,825 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-22 10:16:44,826 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-22 10:16:44,826 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-22 10:16:44,826 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-22 10:16:44,826 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-22 10:16:44,826 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-22 10:16:44,827 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-22 10:16:44,827 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-22 10:16:44,827 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-22 10:16:44,827 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 10:16:44,827 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-22 10:16:44,828 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-22 10:16:44,828 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-22 10:16:44,828 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-22 10:16:44,828 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-22 10:16:44,828 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-22 10:16:44,829 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-22 10:16:44,829 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-22 10:16:44,831 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-22 10:16:44,831 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0facbc53e01d120e629a50b5211a29fd2bc23d2bc5e324a9623e8d1b2c65da11 [2024-11-22 10:16:45,032 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-22 10:16:45,054 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-22 10:16:45,056 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-22 10:16:45,057 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-22 10:16:45,057 INFO L274 PluginConnector]: CDTParser initialized [2024-11-22 10:16:45,058 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-1loop_file-31.i [2024-11-22 10:16:46,282 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-22 10:16:46,481 INFO L384 CDTParser]: Found 1 translation units. [2024-11-22 10:16:46,482 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-1loop_file-31.i [2024-11-22 10:16:46,493 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/04596b2c5/2ecd8907fabf4cdba9c5df0b3f2b55e8/FLAGa8d7cf894 [2024-11-22 10:16:46,879 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/04596b2c5/2ecd8907fabf4cdba9c5df0b3f2b55e8 [2024-11-22 10:16:46,881 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-22 10:16:46,882 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-22 10:16:46,883 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-22 10:16:46,883 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-22 10:16:46,887 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-22 10:16:46,888 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 10:16:46" (1/1) ... [2024-11-22 10:16:46,888 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@219f5e89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:16:46, skipping insertion in model container [2024-11-22 10:16:46,888 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 10:16:46" (1/1) ... [2024-11-22 10:16:46,911 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-22 10:16:47,077 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_100-1loop_file-31.i[916,929] [2024-11-22 10:16:47,197 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 10:16:47,205 INFO L200 MainTranslator]: Completed pre-run [2024-11-22 10:16:47,214 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_100-1loop_file-31.i[916,929] [2024-11-22 10:16:47,266 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 10:16:47,281 INFO L204 MainTranslator]: Completed translation [2024-11-22 10:16:47,282 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:16:47 WrapperNode [2024-11-22 10:16:47,282 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-22 10:16:47,284 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-22 10:16:47,285 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-22 10:16:47,285 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-22 10:16:47,290 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:16:47" (1/1) ... [2024-11-22 10:16:47,300 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:16:47" (1/1) ... [2024-11-22 10:16:47,341 INFO L138 Inliner]: procedures = 26, calls = 39, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 264 [2024-11-22 10:16:47,342 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-22 10:16:47,343 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-22 10:16:47,343 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-22 10:16:47,343 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-22 10:16:47,352 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:16:47" (1/1) ... [2024-11-22 10:16:47,352 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:16:47" (1/1) ... [2024-11-22 10:16:47,356 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:16:47" (1/1) ... [2024-11-22 10:16:47,379 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 10:16:47,380 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:16:47" (1/1) ... [2024-11-22 10:16:47,380 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:16:47" (1/1) ... [2024-11-22 10:16:47,393 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:16:47" (1/1) ... [2024-11-22 10:16:47,402 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:16:47" (1/1) ... [2024-11-22 10:16:47,408 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:16:47" (1/1) ... [2024-11-22 10:16:47,414 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:16:47" (1/1) ... [2024-11-22 10:16:47,422 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-22 10:16:47,425 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-22 10:16:47,426 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-22 10:16:47,426 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-22 10:16:47,427 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:16:47" (1/1) ... [2024-11-22 10:16:47,431 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 10:16:47,440 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 10:16:47,455 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 10:16:47,459 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 10:16:47,494 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-22 10:16:47,494 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-22 10:16:47,495 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-22 10:16:47,495 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-22 10:16:47,495 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-22 10:16:47,495 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-22 10:16:47,576 INFO L238 CfgBuilder]: Building ICFG [2024-11-22 10:16:47,578 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-22 10:16:47,932 INFO L? ?]: Removed 42 outVars from TransFormulas that were not future-live. [2024-11-22 10:16:47,933 INFO L287 CfgBuilder]: Performing block encoding [2024-11-22 10:16:47,944 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-22 10:16:47,945 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-22 10:16:47,945 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 10:16:47 BoogieIcfgContainer [2024-11-22 10:16:47,945 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-22 10:16:47,947 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-22 10:16:47,947 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-22 10:16:47,950 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-22 10:16:47,950 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 10:16:46" (1/3) ... [2024-11-22 10:16:47,951 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@273f51ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 10:16:47, skipping insertion in model container [2024-11-22 10:16:47,951 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:16:47" (2/3) ... [2024-11-22 10:16:47,951 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@273f51ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 10:16:47, skipping insertion in model container [2024-11-22 10:16:47,952 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 10:16:47" (3/3) ... [2024-11-22 10:16:47,953 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_loopvsstraightlinecode_100-1loop_file-31.i [2024-11-22 10:16:47,965 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-22 10:16:47,966 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-22 10:16:48,013 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-22 10:16:48,018 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;@6ba5e113, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-22 10:16:48,019 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-22 10:16:48,022 INFO L276 IsEmpty]: Start isEmpty. Operand has 107 states, 78 states have (on average 1.4615384615384615) internal successors, (114), 79 states have internal predecessors, (114), 26 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2024-11-22 10:16:48,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2024-11-22 10:16:48,034 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 10:16:48,034 INFO L215 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:16:48,035 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 10:16:48,039 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 10:16:48,039 INFO L85 PathProgramCache]: Analyzing trace with hash -317151865, now seen corresponding path program 1 times [2024-11-22 10:16:48,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 10:16:48,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718805910] [2024-11-22 10:16:48,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 10:16:48,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 10:16:48,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 10:16:48,398 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 1250 trivial. 0 not checked. [2024-11-22 10:16:48,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 10:16:48,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718805910] [2024-11-22 10:16:48,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1718805910] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 10:16:48,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1255635131] [2024-11-22 10:16:48,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 10:16:48,402 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 10:16:48,402 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 10:16:48,404 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 10:16:48,405 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 10:16:48,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 10:16:48,552 INFO L255 TraceCheckSpWp]: Trace formula consists of 427 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-22 10:16:48,562 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 10:16:48,597 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 1250 trivial. 0 not checked. [2024-11-22 10:16:48,600 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 10:16:48,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1255635131] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 10:16:48,600 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 10:16:48,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-22 10:16:48,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80346265] [2024-11-22 10:16:48,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 10:16:48,607 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-22 10:16:48,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 10:16:48,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-22 10:16:48,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-22 10:16:48,627 INFO L87 Difference]: Start difference. First operand has 107 states, 78 states have (on average 1.4615384615384615) internal successors, (114), 79 states have internal predecessors, (114), 26 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) Second operand has 2 states, 2 states have (on average 23.5) internal successors, (47), 2 states have internal predecessors, (47), 2 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 2 states have call successors, (26) [2024-11-22 10:16:48,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 10:16:48,648 INFO L93 Difference]: Finished difference Result 201 states and 340 transitions. [2024-11-22 10:16:48,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-22 10:16:48,650 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 23.5) internal successors, (47), 2 states have internal predecessors, (47), 2 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 2 states have call successors, (26) Word has length 172 [2024-11-22 10:16:48,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 10:16:48,655 INFO L225 Difference]: With dead ends: 201 [2024-11-22 10:16:48,655 INFO L226 Difference]: Without dead ends: 93 [2024-11-22 10:16:48,658 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 173 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 10:16:48,661 INFO L432 NwaCegarLoop]: 147 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, 147 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 10:16:48,662 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 10:16:48,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2024-11-22 10:16:48,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2024-11-22 10:16:48,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 65 states have (on average 1.4) internal successors, (91), 65 states have internal predecessors, (91), 26 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2024-11-22 10:16:48,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 143 transitions. [2024-11-22 10:16:48,697 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 143 transitions. Word has length 172 [2024-11-22 10:16:48,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 10:16:48,698 INFO L471 AbstractCegarLoop]: Abstraction has 93 states and 143 transitions. [2024-11-22 10:16:48,698 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 23.5) internal successors, (47), 2 states have internal predecessors, (47), 2 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 2 states have call successors, (26) [2024-11-22 10:16:48,699 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 143 transitions. [2024-11-22 10:16:48,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2024-11-22 10:16:48,701 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 10:16:48,701 INFO L215 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:16:48,710 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 10:16:48,906 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 10:16:48,907 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 10:16:48,907 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 10:16:48,908 INFO L85 PathProgramCache]: Analyzing trace with hash 1351871951, now seen corresponding path program 1 times [2024-11-22 10:16:48,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 10:16:48,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212437474] [2024-11-22 10:16:48,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 10:16:48,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 10:16:48,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 10:16:49,369 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2024-11-22 10:16:49,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 10:16:49,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212437474] [2024-11-22 10:16:49,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [212437474] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 10:16:49,371 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 10:16:49,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 10:16:49,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590647216] [2024-11-22 10:16:49,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 10:16:49,372 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 10:16:49,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 10:16:49,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 10:16:49,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 10:16:49,375 INFO L87 Difference]: Start difference. First operand 93 states and 143 transitions. Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-11-22 10:16:49,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 10:16:49,560 INFO L93 Difference]: Finished difference Result 274 states and 424 transitions. [2024-11-22 10:16:49,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 10:16:49,561 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) Word has length 172 [2024-11-22 10:16:49,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 10:16:49,563 INFO L225 Difference]: With dead ends: 274 [2024-11-22 10:16:49,563 INFO L226 Difference]: Without dead ends: 184 [2024-11-22 10:16:49,565 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 10:16:49,566 INFO L432 NwaCegarLoop]: 134 mSDtfsCounter, 92 mSDsluCounter, 251 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 385 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 10:16:49,566 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 385 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 10:16:49,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2024-11-22 10:16:49,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 152. [2024-11-22 10:16:49,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 97 states have (on average 1.3608247422680413) internal successors, (132), 97 states have internal predecessors, (132), 52 states have call successors, (52), 2 states have call predecessors, (52), 2 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2024-11-22 10:16:49,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 236 transitions. [2024-11-22 10:16:49,604 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 236 transitions. Word has length 172 [2024-11-22 10:16:49,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 10:16:49,604 INFO L471 AbstractCegarLoop]: Abstraction has 152 states and 236 transitions. [2024-11-22 10:16:49,605 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-11-22 10:16:49,605 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 236 transitions. [2024-11-22 10:16:49,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2024-11-22 10:16:49,606 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 10:16:49,607 INFO L215 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:16:49,607 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-22 10:16:49,607 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 10:16:49,610 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 10:16:49,610 INFO L85 PathProgramCache]: Analyzing trace with hash -1958210082, now seen corresponding path program 1 times [2024-11-22 10:16:49,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 10:16:49,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368620397] [2024-11-22 10:16:49,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 10:16:49,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 10:16:49,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 10:16:49,860 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2024-11-22 10:16:49,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 10:16:49,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368620397] [2024-11-22 10:16:49,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1368620397] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 10:16:49,861 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 10:16:49,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 10:16:49,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328675842] [2024-11-22 10:16:49,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 10:16:49,861 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 10:16:49,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 10:16:49,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 10:16:49,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 10:16:49,864 INFO L87 Difference]: Start difference. First operand 152 states and 236 transitions. Second operand has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-11-22 10:16:50,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 10:16:50,027 INFO L93 Difference]: Finished difference Result 274 states and 423 transitions. [2024-11-22 10:16:50,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 10:16:50,027 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) Word has length 173 [2024-11-22 10:16:50,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 10:16:50,031 INFO L225 Difference]: With dead ends: 274 [2024-11-22 10:16:50,032 INFO L226 Difference]: Without dead ends: 184 [2024-11-22 10:16:50,033 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 10:16:50,034 INFO L432 NwaCegarLoop]: 135 mSDtfsCounter, 90 mSDsluCounter, 252 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 387 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 10:16:50,036 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 387 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 10:16:50,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2024-11-22 10:16:50,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 153. [2024-11-22 10:16:50,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 98 states have (on average 1.3571428571428572) internal successors, (133), 98 states have internal predecessors, (133), 52 states have call successors, (52), 2 states have call predecessors, (52), 2 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2024-11-22 10:16:50,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 237 transitions. [2024-11-22 10:16:50,066 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 237 transitions. Word has length 173 [2024-11-22 10:16:50,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 10:16:50,067 INFO L471 AbstractCegarLoop]: Abstraction has 153 states and 237 transitions. [2024-11-22 10:16:50,068 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-11-22 10:16:50,068 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 237 transitions. [2024-11-22 10:16:50,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2024-11-22 10:16:50,070 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 10:16:50,070 INFO L215 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:16:50,070 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-22 10:16:50,070 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 10:16:50,070 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 10:16:50,071 INFO L85 PathProgramCache]: Analyzing trace with hash 1271826764, now seen corresponding path program 1 times [2024-11-22 10:16:50,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 10:16:50,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19901202] [2024-11-22 10:16:50,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 10:16:50,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 10:16:50,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 10:16:50,448 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2024-11-22 10:16:50,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 10:16:50,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19901202] [2024-11-22 10:16:50,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [19901202] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 10:16:50,449 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 10:16:50,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 10:16:50,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42942767] [2024-11-22 10:16:50,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 10:16:50,450 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 10:16:50,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 10:16:50,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 10:16:50,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 10:16:50,453 INFO L87 Difference]: Start difference. First operand 153 states and 237 transitions. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-11-22 10:16:50,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 10:16:50,599 INFO L93 Difference]: Finished difference Result 293 states and 452 transitions. [2024-11-22 10:16:50,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 10:16:50,600 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) Word has length 174 [2024-11-22 10:16:50,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 10:16:50,603 INFO L225 Difference]: With dead ends: 293 [2024-11-22 10:16:50,603 INFO L226 Difference]: Without dead ends: 192 [2024-11-22 10:16:50,604 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 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 10:16:50,605 INFO L432 NwaCegarLoop]: 140 mSDtfsCounter, 97 mSDsluCounter, 258 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 398 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 10:16:50,607 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 398 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 10:16:50,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2024-11-22 10:16:50,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 155. [2024-11-22 10:16:50,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 100 states have (on average 1.31) internal successors, (131), 100 states have internal predecessors, (131), 52 states have call successors, (52), 2 states have call predecessors, (52), 2 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2024-11-22 10:16:50,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 235 transitions. [2024-11-22 10:16:50,628 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 235 transitions. Word has length 174 [2024-11-22 10:16:50,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 10:16:50,630 INFO L471 AbstractCegarLoop]: Abstraction has 155 states and 235 transitions. [2024-11-22 10:16:50,630 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-11-22 10:16:50,630 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 235 transitions. [2024-11-22 10:16:50,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2024-11-22 10:16:50,633 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 10:16:50,633 INFO L215 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:16:50,633 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-22 10:16:50,634 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 10:16:50,635 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 10:16:50,635 INFO L85 PathProgramCache]: Analyzing trace with hash 1977645201, now seen corresponding path program 1 times [2024-11-22 10:16:50,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 10:16:50,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130744208] [2024-11-22 10:16:50,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 10:16:50,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 10:16:50,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 10:16:50,914 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2024-11-22 10:16:50,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 10:16:50,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130744208] [2024-11-22 10:16:50,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [130744208] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 10:16:50,916 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 10:16:50,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 10:16:50,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064752300] [2024-11-22 10:16:50,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 10:16:50,917 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 10:16:50,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 10:16:50,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 10:16:50,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-22 10:16:50,918 INFO L87 Difference]: Start difference. First operand 155 states and 235 transitions. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-11-22 10:16:51,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 10:16:51,106 INFO L93 Difference]: Finished difference Result 415 states and 630 transitions. [2024-11-22 10:16:51,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-22 10:16:51,106 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) Word has length 175 [2024-11-22 10:16:51,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 10:16:51,109 INFO L225 Difference]: With dead ends: 415 [2024-11-22 10:16:51,109 INFO L226 Difference]: Without dead ends: 316 [2024-11-22 10:16:51,110 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-22 10:16:51,110 INFO L432 NwaCegarLoop]: 211 mSDtfsCounter, 216 mSDsluCounter, 452 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 216 SdHoareTripleChecker+Valid, 663 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 10:16:51,110 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [216 Valid, 663 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 10:16:51,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2024-11-22 10:16:51,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 226. [2024-11-22 10:16:51,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 226 states, 144 states have (on average 1.2777777777777777) internal successors, (184), 144 states have internal predecessors, (184), 78 states have call successors, (78), 3 states have call predecessors, (78), 3 states have return successors, (78), 78 states have call predecessors, (78), 78 states have call successors, (78) [2024-11-22 10:16:51,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 340 transitions. [2024-11-22 10:16:51,141 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 340 transitions. Word has length 175 [2024-11-22 10:16:51,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 10:16:51,142 INFO L471 AbstractCegarLoop]: Abstraction has 226 states and 340 transitions. [2024-11-22 10:16:51,143 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-11-22 10:16:51,143 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 340 transitions. [2024-11-22 10:16:51,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2024-11-22 10:16:51,144 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 10:16:51,144 INFO L215 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:16:51,145 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-22 10:16:51,145 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 10:16:51,145 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 10:16:51,146 INFO L85 PathProgramCache]: Analyzing trace with hash -2098467377, now seen corresponding path program 1 times [2024-11-22 10:16:51,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 10:16:51,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937044985] [2024-11-22 10:16:51,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 10:16:51,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 10:16:51,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 10:16:53,839 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2024-11-22 10:16:53,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 10:16:53,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937044985] [2024-11-22 10:16:53,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1937044985] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 10:16:53,839 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 10:16:53,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-22 10:16:53,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885880340] [2024-11-22 10:16:53,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 10:16:53,840 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-22 10:16:53,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 10:16:53,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-22 10:16:53,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-11-22 10:16:53,845 INFO L87 Difference]: Start difference. First operand 226 states and 340 transitions. Second operand has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 9 states have internal predecessors, (48), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-11-22 10:16:54,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 10:16:54,485 INFO L93 Difference]: Finished difference Result 534 states and 789 transitions. [2024-11-22 10:16:54,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-22 10:16:54,485 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 9 states have internal predecessors, (48), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) Word has length 175 [2024-11-22 10:16:54,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 10:16:54,489 INFO L225 Difference]: With dead ends: 534 [2024-11-22 10:16:54,489 INFO L226 Difference]: Without dead ends: 370 [2024-11-22 10:16:54,491 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2024-11-22 10:16:54,494 INFO L432 NwaCegarLoop]: 130 mSDtfsCounter, 155 mSDsluCounter, 413 mSDsCounter, 0 mSdLazyCounter, 304 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 155 SdHoareTripleChecker+Valid, 543 SdHoareTripleChecker+Invalid, 346 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 304 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-22 10:16:54,494 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [155 Valid, 543 Invalid, 346 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 304 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-22 10:16:54,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 370 states. [2024-11-22 10:16:54,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 370 to 325. [2024-11-22 10:16:54,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 325 states, 222 states have (on average 1.3108108108108107) internal successors, (291), 224 states have internal predecessors, (291), 96 states have call successors, (96), 6 states have call predecessors, (96), 6 states have return successors, (96), 94 states have call predecessors, (96), 96 states have call successors, (96) [2024-11-22 10:16:54,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 325 states to 325 states and 483 transitions. [2024-11-22 10:16:54,530 INFO L78 Accepts]: Start accepts. Automaton has 325 states and 483 transitions. Word has length 175 [2024-11-22 10:16:54,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 10:16:54,530 INFO L471 AbstractCegarLoop]: Abstraction has 325 states and 483 transitions. [2024-11-22 10:16:54,530 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 9 states have internal predecessors, (48), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-11-22 10:16:54,530 INFO L276 IsEmpty]: Start isEmpty. Operand 325 states and 483 transitions. [2024-11-22 10:16:54,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2024-11-22 10:16:54,532 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 10:16:54,532 INFO L215 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:16:54,532 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-22 10:16:54,532 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 10:16:54,533 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 10:16:54,533 INFO L85 PathProgramCache]: Analyzing trace with hash -1418409007, now seen corresponding path program 1 times [2024-11-22 10:16:54,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 10:16:54,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44879661] [2024-11-22 10:16:54,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 10:16:54,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 10:16:54,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 10:16:54,921 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2024-11-22 10:16:54,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 10:16:54,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44879661] [2024-11-22 10:16:54,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [44879661] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 10:16:54,921 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 10:16:54,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-22 10:16:54,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201506862] [2024-11-22 10:16:54,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 10:16:54,922 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-22 10:16:54,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 10:16:54,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-22 10:16:54,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-22 10:16:54,923 INFO L87 Difference]: Start difference. First operand 325 states and 483 transitions. Second operand has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-11-22 10:16:55,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 10:16:55,377 INFO L93 Difference]: Finished difference Result 765 states and 1135 transitions. [2024-11-22 10:16:55,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-22 10:16:55,378 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) Word has length 175 [2024-11-22 10:16:55,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 10:16:55,383 INFO L225 Difference]: With dead ends: 765 [2024-11-22 10:16:55,383 INFO L226 Difference]: Without dead ends: 506 [2024-11-22 10:16:55,384 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2024-11-22 10:16:55,384 INFO L432 NwaCegarLoop]: 140 mSDtfsCounter, 311 mSDsluCounter, 526 mSDsCounter, 0 mSdLazyCounter, 223 mSolverCounterSat, 147 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 311 SdHoareTripleChecker+Valid, 666 SdHoareTripleChecker+Invalid, 370 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 147 IncrementalHoareTripleChecker+Valid, 223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-22 10:16:55,385 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [311 Valid, 666 Invalid, 370 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [147 Valid, 223 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-22 10:16:55,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 506 states. [2024-11-22 10:16:55,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 506 to 484. [2024-11-22 10:16:55,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 484 states, 323 states have (on average 1.2817337461300309) internal successors, (414), 327 states have internal predecessors, (414), 148 states have call successors, (148), 12 states have call predecessors, (148), 12 states have return successors, (148), 144 states have call predecessors, (148), 148 states have call successors, (148) [2024-11-22 10:16:55,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 484 states to 484 states and 710 transitions. [2024-11-22 10:16:55,432 INFO L78 Accepts]: Start accepts. Automaton has 484 states and 710 transitions. Word has length 175 [2024-11-22 10:16:55,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 10:16:55,435 INFO L471 AbstractCegarLoop]: Abstraction has 484 states and 710 transitions. [2024-11-22 10:16:55,435 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-11-22 10:16:55,435 INFO L276 IsEmpty]: Start isEmpty. Operand 484 states and 710 transitions. [2024-11-22 10:16:55,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2024-11-22 10:16:55,437 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 10:16:55,437 INFO L215 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:16:55,437 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-22 10:16:55,437 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 10:16:55,438 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 10:16:55,438 INFO L85 PathProgramCache]: Analyzing trace with hash 1728432849, now seen corresponding path program 1 times [2024-11-22 10:16:55,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 10:16:55,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431659146] [2024-11-22 10:16:55,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 10:16:55,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 10:16:55,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 10:16:58,533 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2024-11-22 10:16:58,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 10:16:58,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431659146] [2024-11-22 10:16:58,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [431659146] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 10:16:58,534 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 10:16:58,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-22 10:16:58,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070975787] [2024-11-22 10:16:58,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 10:16:58,535 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-22 10:16:58,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 10:16:58,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-22 10:16:58,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-22 10:16:58,536 INFO L87 Difference]: Start difference. First operand 484 states and 710 transitions. Second operand has 8 states, 8 states have (on average 6.0) internal successors, (48), 8 states have internal predecessors, (48), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-11-22 10:16:59,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 10:16:59,271 INFO L93 Difference]: Finished difference Result 891 states and 1291 transitions. [2024-11-22 10:16:59,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-22 10:16:59,272 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 8 states have internal predecessors, (48), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) Word has length 175 [2024-11-22 10:16:59,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 10:16:59,276 INFO L225 Difference]: With dead ends: 891 [2024-11-22 10:16:59,276 INFO L226 Difference]: Without dead ends: 574 [2024-11-22 10:16:59,277 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2024-11-22 10:16:59,278 INFO L432 NwaCegarLoop]: 143 mSDtfsCounter, 136 mSDsluCounter, 549 mSDsCounter, 0 mSdLazyCounter, 338 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 692 SdHoareTripleChecker+Invalid, 377 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 338 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-22 10:16:59,279 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 692 Invalid, 377 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 338 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-22 10:16:59,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 574 states. [2024-11-22 10:16:59,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 574 to 482. [2024-11-22 10:16:59,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 482 states, 321 states have (on average 1.280373831775701) internal successors, (411), 325 states have internal predecessors, (411), 148 states have call successors, (148), 12 states have call predecessors, (148), 12 states have return successors, (148), 144 states have call predecessors, (148), 148 states have call successors, (148) [2024-11-22 10:16:59,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 482 states to 482 states and 707 transitions. [2024-11-22 10:16:59,317 INFO L78 Accepts]: Start accepts. Automaton has 482 states and 707 transitions. Word has length 175 [2024-11-22 10:16:59,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 10:16:59,317 INFO L471 AbstractCegarLoop]: Abstraction has 482 states and 707 transitions. [2024-11-22 10:16:59,317 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 8 states have internal predecessors, (48), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-11-22 10:16:59,318 INFO L276 IsEmpty]: Start isEmpty. Operand 482 states and 707 transitions. [2024-11-22 10:16:59,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2024-11-22 10:16:59,320 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 10:16:59,320 INFO L215 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:16:59,320 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-22 10:16:59,320 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 10:16:59,321 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 10:16:59,321 INFO L85 PathProgramCache]: Analyzing trace with hash -1261176580, now seen corresponding path program 1 times [2024-11-22 10:16:59,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 10:16:59,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064512190] [2024-11-22 10:16:59,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 10:16:59,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 10:16:59,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 10:17:01,701 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2024-11-22 10:17:01,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 10:17:01,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064512190] [2024-11-22 10:17:01,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2064512190] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 10:17:01,702 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 10:17:01,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-22 10:17:01,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200298828] [2024-11-22 10:17:01,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 10:17:01,704 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-22 10:17:01,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 10:17:01,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-22 10:17:01,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-11-22 10:17:01,705 INFO L87 Difference]: Start difference. First operand 482 states and 707 transitions. Second operand has 9 states, 9 states have (on average 5.444444444444445) internal successors, (49), 9 states have internal predecessors, (49), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-11-22 10:17:02,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 10:17:02,542 INFO L93 Difference]: Finished difference Result 887 states and 1293 transitions. [2024-11-22 10:17:02,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-22 10:17:02,543 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.444444444444445) internal successors, (49), 9 states have internal predecessors, (49), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) Word has length 176 [2024-11-22 10:17:02,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 10:17:02,546 INFO L225 Difference]: With dead ends: 887 [2024-11-22 10:17:02,546 INFO L226 Difference]: Without dead ends: 570 [2024-11-22 10:17:02,548 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-11-22 10:17:02,549 INFO L432 NwaCegarLoop]: 143 mSDtfsCounter, 67 mSDsluCounter, 453 mSDsCounter, 0 mSdLazyCounter, 319 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 596 SdHoareTripleChecker+Invalid, 320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 319 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-22 10:17:02,550 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 596 Invalid, 320 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 319 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-22 10:17:02,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 570 states. [2024-11-22 10:17:02,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 570 to 496. [2024-11-22 10:17:02,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 496 states, 335 states have (on average 1.3014925373134327) internal successors, (436), 339 states have internal predecessors, (436), 148 states have call successors, (148), 12 states have call predecessors, (148), 12 states have return successors, (148), 144 states have call predecessors, (148), 148 states have call successors, (148) [2024-11-22 10:17:02,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 496 states to 496 states and 732 transitions. [2024-11-22 10:17:02,583 INFO L78 Accepts]: Start accepts. Automaton has 496 states and 732 transitions. Word has length 176 [2024-11-22 10:17:02,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 10:17:02,584 INFO L471 AbstractCegarLoop]: Abstraction has 496 states and 732 transitions. [2024-11-22 10:17:02,584 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.444444444444445) internal successors, (49), 9 states have internal predecessors, (49), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-11-22 10:17:02,584 INFO L276 IsEmpty]: Start isEmpty. Operand 496 states and 732 transitions. [2024-11-22 10:17:02,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2024-11-22 10:17:02,586 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 10:17:02,586 INFO L215 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:17:02,586 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-22 10:17:02,587 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 10:17:02,587 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 10:17:02,587 INFO L85 PathProgramCache]: Analyzing trace with hash 1885665276, now seen corresponding path program 1 times [2024-11-22 10:17:02,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 10:17:02,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695700290] [2024-11-22 10:17:02,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 10:17:02,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 10:17:02,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 10:17:03,342 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2024-11-22 10:17:03,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 10:17:03,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [695700290] [2024-11-22 10:17:03,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [695700290] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 10:17:03,342 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 10:17:03,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-22 10:17:03,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605175179] [2024-11-22 10:17:03,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 10:17:03,343 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-22 10:17:03,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 10:17:03,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-22 10:17:03,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2024-11-22 10:17:03,344 INFO L87 Difference]: Start difference. First operand 496 states and 732 transitions. Second operand has 12 states, 12 states have (on average 4.083333333333333) internal successors, (49), 12 states have internal predecessors, (49), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-11-22 10:17:04,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 10:17:04,334 INFO L93 Difference]: Finished difference Result 907 states and 1331 transitions. [2024-11-22 10:17:04,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-22 10:17:04,336 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.083333333333333) internal successors, (49), 12 states have internal predecessors, (49), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) Word has length 176 [2024-11-22 10:17:04,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 10:17:04,340 INFO L225 Difference]: With dead ends: 907 [2024-11-22 10:17:04,340 INFO L226 Difference]: Without dead ends: 572 [2024-11-22 10:17:04,341 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=165, Invalid=435, Unknown=0, NotChecked=0, Total=600 [2024-11-22 10:17:04,341 INFO L432 NwaCegarLoop]: 118 mSDtfsCounter, 649 mSDsluCounter, 705 mSDsCounter, 0 mSdLazyCounter, 395 mSolverCounterSat, 164 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 649 SdHoareTripleChecker+Valid, 823 SdHoareTripleChecker+Invalid, 559 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 164 IncrementalHoareTripleChecker+Valid, 395 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-22 10:17:04,342 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [649 Valid, 823 Invalid, 559 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [164 Valid, 395 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-22 10:17:04,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 572 states. [2024-11-22 10:17:04,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 572 to 514. [2024-11-22 10:17:04,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 514 states, 353 states have (on average 1.3087818696883853) internal successors, (462), 357 states have internal predecessors, (462), 148 states have call successors, (148), 12 states have call predecessors, (148), 12 states have return successors, (148), 144 states have call predecessors, (148), 148 states have call successors, (148) [2024-11-22 10:17:04,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 514 states to 514 states and 758 transitions. [2024-11-22 10:17:04,370 INFO L78 Accepts]: Start accepts. Automaton has 514 states and 758 transitions. Word has length 176 [2024-11-22 10:17:04,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 10:17:04,370 INFO L471 AbstractCegarLoop]: Abstraction has 514 states and 758 transitions. [2024-11-22 10:17:04,370 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.083333333333333) internal successors, (49), 12 states have internal predecessors, (49), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-11-22 10:17:04,370 INFO L276 IsEmpty]: Start isEmpty. Operand 514 states and 758 transitions. [2024-11-22 10:17:04,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2024-11-22 10:17:04,372 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 10:17:04,372 INFO L215 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:17:04,372 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-22 10:17:04,372 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 10:17:04,373 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 10:17:04,373 INFO L85 PathProgramCache]: Analyzing trace with hash -1729243650, now seen corresponding path program 1 times [2024-11-22 10:17:04,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 10:17:04,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186774359] [2024-11-22 10:17:04,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 10:17:04,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 10:17:04,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 10:17:09,230 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2024-11-22 10:17:09,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 10:17:09,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1186774359] [2024-11-22 10:17:09,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1186774359] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 10:17:09,231 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 10:17:09,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-11-22 10:17:09,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770316230] [2024-11-22 10:17:09,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 10:17:09,231 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-22 10:17:09,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 10:17:09,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-22 10:17:09,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2024-11-22 10:17:09,232 INFO L87 Difference]: Start difference. First operand 514 states and 758 transitions. Second operand has 14 states, 14 states have (on average 3.5) internal successors, (49), 14 states have internal predecessors, (49), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-11-22 10:17:17,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 10:17:17,038 INFO L93 Difference]: Finished difference Result 889 states and 1308 transitions. [2024-11-22 10:17:17,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-22 10:17:17,039 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.5) internal successors, (49), 14 states have internal predecessors, (49), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) Word has length 176 [2024-11-22 10:17:17,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 10:17:17,043 INFO L225 Difference]: With dead ends: 889 [2024-11-22 10:17:17,044 INFO L226 Difference]: Without dead ends: 561 [2024-11-22 10:17:17,045 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=165, Invalid=591, Unknown=0, NotChecked=0, Total=756 [2024-11-22 10:17:17,045 INFO L432 NwaCegarLoop]: 146 mSDtfsCounter, 370 mSDsluCounter, 929 mSDsCounter, 0 mSdLazyCounter, 919 mSolverCounterSat, 132 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 370 SdHoareTripleChecker+Valid, 1075 SdHoareTripleChecker+Invalid, 1051 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 132 IncrementalHoareTripleChecker+Valid, 919 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2024-11-22 10:17:17,046 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [370 Valid, 1075 Invalid, 1051 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [132 Valid, 919 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2024-11-22 10:17:17,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 561 states. [2024-11-22 10:17:17,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 561 to 516. [2024-11-22 10:17:17,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 516 states, 355 states have (on average 1.3126760563380282) internal successors, (466), 359 states have internal predecessors, (466), 148 states have call successors, (148), 12 states have call predecessors, (148), 12 states have return successors, (148), 144 states have call predecessors, (148), 148 states have call successors, (148) [2024-11-22 10:17:17,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 516 states to 516 states and 762 transitions. [2024-11-22 10:17:17,074 INFO L78 Accepts]: Start accepts. Automaton has 516 states and 762 transitions. Word has length 176 [2024-11-22 10:17:17,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 10:17:17,075 INFO L471 AbstractCegarLoop]: Abstraction has 516 states and 762 transitions. [2024-11-22 10:17:17,075 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.5) internal successors, (49), 14 states have internal predecessors, (49), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-11-22 10:17:17,075 INFO L276 IsEmpty]: Start isEmpty. Operand 516 states and 762 transitions. [2024-11-22 10:17:17,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2024-11-22 10:17:17,077 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 10:17:17,077 INFO L215 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:17:17,077 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-22 10:17:17,077 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 10:17:17,078 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 10:17:17,078 INFO L85 PathProgramCache]: Analyzing trace with hash -1003011142, now seen corresponding path program 1 times [2024-11-22 10:17:17,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 10:17:17,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133586440] [2024-11-22 10:17:17,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 10:17:17,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 10:17:17,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 10:17:18,799 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2024-11-22 10:17:18,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 10:17:18,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1133586440] [2024-11-22 10:17:18,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1133586440] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 10:17:18,800 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 10:17:18,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-22 10:17:18,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471686647] [2024-11-22 10:17:18,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 10:17:18,800 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-22 10:17:18,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 10:17:18,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-22 10:17:18,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-11-22 10:17:18,801 INFO L87 Difference]: Start difference. First operand 516 states and 762 transitions. Second operand has 11 states, 11 states have (on average 4.454545454545454) internal successors, (49), 11 states have internal predecessors, (49), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-11-22 10:17:19,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 10:17:19,540 INFO L93 Difference]: Finished difference Result 1077 states and 1581 transitions. [2024-11-22 10:17:19,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-22 10:17:19,541 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.454545454545454) internal successors, (49), 11 states have internal predecessors, (49), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) Word has length 176 [2024-11-22 10:17:19,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 10:17:19,546 INFO L225 Difference]: With dead ends: 1077 [2024-11-22 10:17:19,546 INFO L226 Difference]: Without dead ends: 749 [2024-11-22 10:17:19,548 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=93, Invalid=213, Unknown=0, NotChecked=0, Total=306 [2024-11-22 10:17:19,549 INFO L432 NwaCegarLoop]: 141 mSDtfsCounter, 157 mSDsluCounter, 562 mSDsCounter, 0 mSdLazyCounter, 278 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 157 SdHoareTripleChecker+Valid, 703 SdHoareTripleChecker+Invalid, 283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 278 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-22 10:17:19,550 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [157 Valid, 703 Invalid, 283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 278 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-22 10:17:19,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 749 states. [2024-11-22 10:17:19,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 749 to 567. [2024-11-22 10:17:19,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 567 states, 406 states have (on average 1.3374384236453203) internal successors, (543), 410 states have internal predecessors, (543), 148 states have call successors, (148), 12 states have call predecessors, (148), 12 states have return successors, (148), 144 states have call predecessors, (148), 148 states have call successors, (148) [2024-11-22 10:17:19,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 567 states to 567 states and 839 transitions. [2024-11-22 10:17:19,582 INFO L78 Accepts]: Start accepts. Automaton has 567 states and 839 transitions. Word has length 176 [2024-11-22 10:17:19,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 10:17:19,583 INFO L471 AbstractCegarLoop]: Abstraction has 567 states and 839 transitions. [2024-11-22 10:17:19,583 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.454545454545454) internal successors, (49), 11 states have internal predecessors, (49), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-11-22 10:17:19,583 INFO L276 IsEmpty]: Start isEmpty. Operand 567 states and 839 transitions. [2024-11-22 10:17:19,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2024-11-22 10:17:19,584 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 10:17:19,584 INFO L215 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:17:19,584 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-22 10:17:19,585 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 10:17:19,585 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 10:17:19,585 INFO L85 PathProgramCache]: Analyzing trace with hash 2143830714, now seen corresponding path program 1 times [2024-11-22 10:17:19,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 10:17:19,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450888848] [2024-11-22 10:17:19,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 10:17:19,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 10:17:19,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 10:17:20,392 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2024-11-22 10:17:20,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 10:17:20,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450888848] [2024-11-22 10:17:20,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1450888848] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 10:17:20,393 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 10:17:20,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-22 10:17:20,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51634164] [2024-11-22 10:17:20,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 10:17:20,394 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-22 10:17:20,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 10:17:20,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-22 10:17:20,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-11-22 10:17:20,394 INFO L87 Difference]: Start difference. First operand 567 states and 839 transitions. Second operand has 10 states, 10 states have (on average 4.9) internal successors, (49), 10 states have internal predecessors, (49), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-11-22 10:17:21,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 10:17:21,095 INFO L93 Difference]: Finished difference Result 987 states and 1459 transitions. [2024-11-22 10:17:21,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-22 10:17:21,096 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.9) internal successors, (49), 10 states have internal predecessors, (49), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) Word has length 176 [2024-11-22 10:17:21,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 10:17:21,099 INFO L225 Difference]: With dead ends: 987 [2024-11-22 10:17:21,099 INFO L226 Difference]: Without dead ends: 609 [2024-11-22 10:17:21,102 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=77, Invalid=195, Unknown=0, NotChecked=0, Total=272 [2024-11-22 10:17:21,102 INFO L432 NwaCegarLoop]: 123 mSDtfsCounter, 394 mSDsluCounter, 675 mSDsCounter, 0 mSdLazyCounter, 342 mSolverCounterSat, 133 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 394 SdHoareTripleChecker+Valid, 798 SdHoareTripleChecker+Invalid, 475 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 133 IncrementalHoareTripleChecker+Valid, 342 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-22 10:17:21,103 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [394 Valid, 798 Invalid, 475 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [133 Valid, 342 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-22 10:17:21,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 609 states. [2024-11-22 10:17:21,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 609 to 568. [2024-11-22 10:17:21,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 568 states, 407 states have (on average 1.3366093366093366) internal successors, (544), 411 states have internal predecessors, (544), 148 states have call successors, (148), 12 states have call predecessors, (148), 12 states have return successors, (148), 144 states have call predecessors, (148), 148 states have call successors, (148) [2024-11-22 10:17:21,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 568 states to 568 states and 840 transitions. [2024-11-22 10:17:21,133 INFO L78 Accepts]: Start accepts. Automaton has 568 states and 840 transitions. Word has length 176 [2024-11-22 10:17:21,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 10:17:21,133 INFO L471 AbstractCegarLoop]: Abstraction has 568 states and 840 transitions. [2024-11-22 10:17:21,134 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.9) internal successors, (49), 10 states have internal predecessors, (49), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-11-22 10:17:21,134 INFO L276 IsEmpty]: Start isEmpty. Operand 568 states and 840 transitions. [2024-11-22 10:17:21,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2024-11-22 10:17:21,134 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 10:17:21,135 INFO L215 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:17:21,135 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-22 10:17:21,135 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 10:17:21,135 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 10:17:21,135 INFO L85 PathProgramCache]: Analyzing trace with hash -1471078212, now seen corresponding path program 1 times [2024-11-22 10:17:21,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 10:17:21,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037621750] [2024-11-22 10:17:21,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 10:17:21,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 10:17:21,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 10:17:25,221 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2024-11-22 10:17:25,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 10:17:25,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1037621750] [2024-11-22 10:17:25,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1037621750] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 10:17:25,222 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 10:17:25,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2024-11-22 10:17:25,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513554647] [2024-11-22 10:17:25,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 10:17:25,222 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-22 10:17:25,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 10:17:25,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-22 10:17:25,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2024-11-22 10:17:25,223 INFO L87 Difference]: Start difference. First operand 568 states and 840 transitions. Second operand has 16 states, 16 states have (on average 3.0625) internal successors, (49), 16 states have internal predecessors, (49), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-11-22 10:17:28,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 10:17:28,185 INFO L93 Difference]: Finished difference Result 1032 states and 1511 transitions. [2024-11-22 10:17:28,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-22 10:17:28,186 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.0625) internal successors, (49), 16 states have internal predecessors, (49), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) Word has length 176 [2024-11-22 10:17:28,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 10:17:28,190 INFO L225 Difference]: With dead ends: 1032 [2024-11-22 10:17:28,190 INFO L226 Difference]: Without dead ends: 660 [2024-11-22 10:17:28,191 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 214 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=255, Invalid=867, Unknown=0, NotChecked=0, Total=1122 [2024-11-22 10:17:28,191 INFO L432 NwaCegarLoop]: 218 mSDtfsCounter, 506 mSDsluCounter, 1286 mSDsCounter, 0 mSdLazyCounter, 1327 mSolverCounterSat, 133 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 506 SdHoareTripleChecker+Valid, 1504 SdHoareTripleChecker+Invalid, 1460 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 133 IncrementalHoareTripleChecker+Valid, 1327 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-22 10:17:28,192 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [506 Valid, 1504 Invalid, 1460 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [133 Valid, 1327 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-22 10:17:28,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 660 states. [2024-11-22 10:17:28,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 660 to 568. [2024-11-22 10:17:28,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 568 states, 407 states have (on average 1.3366093366093366) internal successors, (544), 411 states have internal predecessors, (544), 148 states have call successors, (148), 12 states have call predecessors, (148), 12 states have return successors, (148), 144 states have call predecessors, (148), 148 states have call successors, (148) [2024-11-22 10:17:28,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 568 states to 568 states and 840 transitions. [2024-11-22 10:17:28,221 INFO L78 Accepts]: Start accepts. Automaton has 568 states and 840 transitions. Word has length 176 [2024-11-22 10:17:28,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 10:17:28,222 INFO L471 AbstractCegarLoop]: Abstraction has 568 states and 840 transitions. [2024-11-22 10:17:28,222 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.0625) internal successors, (49), 16 states have internal predecessors, (49), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-11-22 10:17:28,222 INFO L276 IsEmpty]: Start isEmpty. Operand 568 states and 840 transitions. [2024-11-22 10:17:28,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2024-11-22 10:17:28,223 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 10:17:28,223 INFO L215 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:17:28,223 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-22 10:17:28,223 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 10:17:28,224 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 10:17:28,224 INFO L85 PathProgramCache]: Analyzing trace with hash -44818092, now seen corresponding path program 1 times [2024-11-22 10:17:28,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 10:17:28,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834919992] [2024-11-22 10:17:28,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 10:17:28,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 10:17:28,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 10:17:31,435 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2024-11-22 10:17:31,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 10:17:31,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [834919992] [2024-11-22 10:17:31,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [834919992] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 10:17:31,436 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 10:17:31,436 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-11-22 10:17:31,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919324862] [2024-11-22 10:17:31,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 10:17:31,436 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-22 10:17:31,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 10:17:31,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-22 10:17:31,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2024-11-22 10:17:31,437 INFO L87 Difference]: Start difference. First operand 568 states and 840 transitions. Second operand has 14 states, 14 states have (on average 3.5714285714285716) internal successors, (50), 14 states have internal predecessors, (50), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-11-22 10:17:33,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 10:17:33,007 INFO L93 Difference]: Finished difference Result 1081 states and 1578 transitions. [2024-11-22 10:17:33,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-11-22 10:17:33,008 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.5714285714285716) internal successors, (50), 14 states have internal predecessors, (50), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) Word has length 177 [2024-11-22 10:17:33,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 10:17:33,011 INFO L225 Difference]: With dead ends: 1081 [2024-11-22 10:17:33,011 INFO L226 Difference]: Without dead ends: 709 [2024-11-22 10:17:33,012 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 363 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=376, Invalid=1184, Unknown=0, NotChecked=0, Total=1560 [2024-11-22 10:17:33,013 INFO L432 NwaCegarLoop]: 249 mSDtfsCounter, 513 mSDsluCounter, 1512 mSDsCounter, 0 mSdLazyCounter, 702 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 513 SdHoareTripleChecker+Valid, 1761 SdHoareTripleChecker+Invalid, 784 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 702 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-22 10:17:33,013 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [513 Valid, 1761 Invalid, 784 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 702 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-22 10:17:33,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 709 states. [2024-11-22 10:17:33,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 709 to 586. [2024-11-22 10:17:33,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 586 states, 425 states have (on average 1.3435294117647059) internal successors, (571), 429 states have internal predecessors, (571), 148 states have call successors, (148), 12 states have call predecessors, (148), 12 states have return successors, (148), 144 states have call predecessors, (148), 148 states have call successors, (148) [2024-11-22 10:17:33,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 586 states to 586 states and 867 transitions. [2024-11-22 10:17:33,042 INFO L78 Accepts]: Start accepts. Automaton has 586 states and 867 transitions. Word has length 177 [2024-11-22 10:17:33,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 10:17:33,042 INFO L471 AbstractCegarLoop]: Abstraction has 586 states and 867 transitions. [2024-11-22 10:17:33,042 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.5714285714285716) internal successors, (50), 14 states have internal predecessors, (50), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-11-22 10:17:33,043 INFO L276 IsEmpty]: Start isEmpty. Operand 586 states and 867 transitions. [2024-11-22 10:17:33,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2024-11-22 10:17:33,043 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 10:17:33,043 INFO L215 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:17:33,044 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-22 10:17:33,044 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 10:17:33,044 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 10:17:33,044 INFO L85 PathProgramCache]: Analyzing trace with hash 1361472786, now seen corresponding path program 1 times [2024-11-22 10:17:33,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 10:17:33,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220553093] [2024-11-22 10:17:33,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 10:17:33,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 10:17:33,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 10:17:34,417 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2024-11-22 10:17:34,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 10:17:34,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220553093] [2024-11-22 10:17:34,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [220553093] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 10:17:34,417 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 10:17:34,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-22 10:17:34,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163442137] [2024-11-22 10:17:34,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 10:17:34,419 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-22 10:17:34,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 10:17:34,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-22 10:17:34,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-11-22 10:17:34,420 INFO L87 Difference]: Start difference. First operand 586 states and 867 transitions. Second operand has 12 states, 12 states have (on average 4.166666666666667) internal successors, (50), 12 states have internal predecessors, (50), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-11-22 10:17:35,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 10:17:35,597 INFO L93 Difference]: Finished difference Result 1304 states and 1907 transitions. [2024-11-22 10:17:35,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-22 10:17:35,598 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.166666666666667) internal successors, (50), 12 states have internal predecessors, (50), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) Word has length 177 [2024-11-22 10:17:35,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 10:17:35,603 INFO L225 Difference]: With dead ends: 1304 [2024-11-22 10:17:35,603 INFO L226 Difference]: Without dead ends: 932 [2024-11-22 10:17:35,604 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 194 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=219, Invalid=711, Unknown=0, NotChecked=0, Total=930 [2024-11-22 10:17:35,605 INFO L432 NwaCegarLoop]: 242 mSDtfsCounter, 604 mSDsluCounter, 1550 mSDsCounter, 0 mSdLazyCounter, 896 mSolverCounterSat, 186 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 604 SdHoareTripleChecker+Valid, 1792 SdHoareTripleChecker+Invalid, 1082 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 186 IncrementalHoareTripleChecker+Valid, 896 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-22 10:17:35,605 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [604 Valid, 1792 Invalid, 1082 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [186 Valid, 896 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-22 10:17:35,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 932 states. [2024-11-22 10:17:35,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 932 to 588. [2024-11-22 10:17:35,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 588 states, 427 states have (on average 1.3442622950819672) internal successors, (574), 431 states have internal predecessors, (574), 148 states have call successors, (148), 12 states have call predecessors, (148), 12 states have return successors, (148), 144 states have call predecessors, (148), 148 states have call successors, (148) [2024-11-22 10:17:35,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 588 states to 588 states and 870 transitions. [2024-11-22 10:17:35,655 INFO L78 Accepts]: Start accepts. Automaton has 588 states and 870 transitions. Word has length 177 [2024-11-22 10:17:35,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 10:17:35,656 INFO L471 AbstractCegarLoop]: Abstraction has 588 states and 870 transitions. [2024-11-22 10:17:35,656 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.166666666666667) internal successors, (50), 12 states have internal predecessors, (50), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-11-22 10:17:35,656 INFO L276 IsEmpty]: Start isEmpty. Operand 588 states and 870 transitions. [2024-11-22 10:17:35,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2024-11-22 10:17:35,657 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 10:17:35,657 INFO L215 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:17:35,657 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-22 10:17:35,657 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 10:17:35,658 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 10:17:35,658 INFO L85 PathProgramCache]: Analyzing trace with hash 213347346, now seen corresponding path program 1 times [2024-11-22 10:17:35,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 10:17:35,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269100703] [2024-11-22 10:17:35,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 10:17:35,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 10:17:35,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 10:17:37,612 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2024-11-22 10:17:37,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 10:17:37,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [269100703] [2024-11-22 10:17:37,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [269100703] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 10:17:37,612 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 10:17:37,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-22 10:17:37,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734960905] [2024-11-22 10:17:37,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 10:17:37,613 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-22 10:17:37,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 10:17:37,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-22 10:17:37,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-11-22 10:17:37,614 INFO L87 Difference]: Start difference. First operand 588 states and 870 transitions. Second operand has 12 states, 12 states have (on average 4.166666666666667) internal successors, (50), 12 states have internal predecessors, (50), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-11-22 10:17:39,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 10:17:39,168 INFO L93 Difference]: Finished difference Result 1127 states and 1649 transitions. [2024-11-22 10:17:39,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-22 10:17:39,169 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.166666666666667) internal successors, (50), 12 states have internal predecessors, (50), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) Word has length 177 [2024-11-22 10:17:39,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 10:17:39,174 INFO L225 Difference]: With dead ends: 1127 [2024-11-22 10:17:39,174 INFO L226 Difference]: Without dead ends: 755 [2024-11-22 10:17:39,176 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 182 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=239, Invalid=631, Unknown=0, NotChecked=0, Total=870 [2024-11-22 10:17:39,178 INFO L432 NwaCegarLoop]: 240 mSDtfsCounter, 522 mSDsluCounter, 846 mSDsCounter, 0 mSdLazyCounter, 966 mSolverCounterSat, 148 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 522 SdHoareTripleChecker+Valid, 1086 SdHoareTripleChecker+Invalid, 1114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 148 IncrementalHoareTripleChecker+Valid, 966 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-22 10:17:39,178 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [522 Valid, 1086 Invalid, 1114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [148 Valid, 966 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-22 10:17:39,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 755 states. [2024-11-22 10:17:39,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 755 to 589. [2024-11-22 10:17:39,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 589 states, 428 states have (on average 1.3457943925233644) internal successors, (576), 432 states have internal predecessors, (576), 148 states have call successors, (148), 12 states have call predecessors, (148), 12 states have return successors, (148), 144 states have call predecessors, (148), 148 states have call successors, (148) [2024-11-22 10:17:39,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 589 states to 589 states and 872 transitions. [2024-11-22 10:17:39,211 INFO L78 Accepts]: Start accepts. Automaton has 589 states and 872 transitions. Word has length 177 [2024-11-22 10:17:39,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 10:17:39,211 INFO L471 AbstractCegarLoop]: Abstraction has 589 states and 872 transitions. [2024-11-22 10:17:39,211 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.166666666666667) internal successors, (50), 12 states have internal predecessors, (50), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-11-22 10:17:39,211 INFO L276 IsEmpty]: Start isEmpty. Operand 589 states and 872 transitions. [2024-11-22 10:17:39,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2024-11-22 10:17:39,212 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 10:17:39,212 INFO L215 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:17:39,212 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-22 10:17:39,212 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 10:17:39,213 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 10:17:39,213 INFO L85 PathProgramCache]: Analyzing trace with hash 893405716, now seen corresponding path program 1 times [2024-11-22 10:17:39,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 10:17:39,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042862621] [2024-11-22 10:17:39,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 10:17:39,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 10:17:39,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 10:17:43,541 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2024-11-22 10:17:43,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 10:17:43,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1042862621] [2024-11-22 10:17:43,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1042862621] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 10:17:43,543 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 10:17:43,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-11-22 10:17:43,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704791899] [2024-11-22 10:17:43,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 10:17:43,544 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-22 10:17:43,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 10:17:43,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-22 10:17:43,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2024-11-22 10:17:43,544 INFO L87 Difference]: Start difference. First operand 589 states and 872 transitions. Second operand has 14 states, 14 states have (on average 3.5714285714285716) internal successors, (50), 14 states have internal predecessors, (50), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-11-22 10:17:48,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 10:17:48,370 INFO L93 Difference]: Finished difference Result 1054 states and 1544 transitions. [2024-11-22 10:17:48,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-22 10:17:48,371 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.5714285714285716) internal successors, (50), 14 states have internal predecessors, (50), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) Word has length 177 [2024-11-22 10:17:48,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 10:17:48,374 INFO L225 Difference]: With dead ends: 1054 [2024-11-22 10:17:48,374 INFO L226 Difference]: Without dead ends: 682 [2024-11-22 10:17:48,375 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 204 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=277, Invalid=845, Unknown=0, NotChecked=0, Total=1122 [2024-11-22 10:17:48,376 INFO L432 NwaCegarLoop]: 254 mSDtfsCounter, 434 mSDsluCounter, 1630 mSDsCounter, 0 mSdLazyCounter, 1125 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 434 SdHoareTripleChecker+Valid, 1884 SdHoareTripleChecker+Invalid, 1207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 1125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2024-11-22 10:17:48,376 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [434 Valid, 1884 Invalid, 1207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 1125 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2024-11-22 10:17:48,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 682 states. [2024-11-22 10:17:48,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 682 to 589. [2024-11-22 10:17:48,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 589 states, 428 states have (on average 1.3457943925233644) internal successors, (576), 432 states have internal predecessors, (576), 148 states have call successors, (148), 12 states have call predecessors, (148), 12 states have return successors, (148), 144 states have call predecessors, (148), 148 states have call successors, (148) [2024-11-22 10:17:48,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 589 states to 589 states and 872 transitions. [2024-11-22 10:17:48,405 INFO L78 Accepts]: Start accepts. Automaton has 589 states and 872 transitions. Word has length 177 [2024-11-22 10:17:48,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 10:17:48,406 INFO L471 AbstractCegarLoop]: Abstraction has 589 states and 872 transitions. [2024-11-22 10:17:48,406 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.5714285714285716) internal successors, (50), 14 states have internal predecessors, (50), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-11-22 10:17:48,406 INFO L276 IsEmpty]: Start isEmpty. Operand 589 states and 872 transitions. [2024-11-22 10:17:48,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2024-11-22 10:17:48,406 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 10:17:48,407 INFO L215 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:17:48,407 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-22 10:17:48,407 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 10:17:48,407 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 10:17:48,407 INFO L85 PathProgramCache]: Analyzing trace with hash 377883734, now seen corresponding path program 1 times [2024-11-22 10:17:48,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 10:17:48,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763319109] [2024-11-22 10:17:48,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 10:17:48,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 10:17:48,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 10:17:48,451 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2024-11-22 10:17:48,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 10:17:48,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763319109] [2024-11-22 10:17:48,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [763319109] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 10:17:48,451 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 10:17:48,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 10:17:48,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138220504] [2024-11-22 10:17:48,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 10:17:48,452 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 10:17:48,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 10:17:48,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 10:17:48,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 10:17:48,452 INFO L87 Difference]: Start difference. First operand 589 states and 872 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-11-22 10:17:48,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 10:17:48,501 INFO L93 Difference]: Finished difference Result 1210 states and 1784 transitions. [2024-11-22 10:17:48,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 10:17:48,501 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) Word has length 177 [2024-11-22 10:17:48,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 10:17:48,505 INFO L225 Difference]: With dead ends: 1210 [2024-11-22 10:17:48,505 INFO L226 Difference]: Without dead ends: 747 [2024-11-22 10:17:48,506 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 10:17:48,506 INFO L432 NwaCegarLoop]: 188 mSDtfsCounter, 123 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 315 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 10:17:48,507 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [123 Valid, 315 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 10:17:48,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 747 states. [2024-11-22 10:17:48,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 747 to 570. [2024-11-22 10:17:48,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 570 states, 409 states have (on average 1.3202933985330074) internal successors, (540), 413 states have internal predecessors, (540), 148 states have call successors, (148), 12 states have call predecessors, (148), 12 states have return successors, (148), 144 states have call predecessors, (148), 148 states have call successors, (148) [2024-11-22 10:17:48,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 570 states to 570 states and 836 transitions. [2024-11-22 10:17:48,542 INFO L78 Accepts]: Start accepts. Automaton has 570 states and 836 transitions. Word has length 177 [2024-11-22 10:17:48,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 10:17:48,543 INFO L471 AbstractCegarLoop]: Abstraction has 570 states and 836 transitions. [2024-11-22 10:17:48,543 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-11-22 10:17:48,543 INFO L276 IsEmpty]: Start isEmpty. Operand 570 states and 836 transitions. [2024-11-22 10:17:48,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2024-11-22 10:17:48,544 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 10:17:48,544 INFO L215 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:17:48,544 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-22 10:17:48,544 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 10:17:48,544 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 10:17:48,544 INFO L85 PathProgramCache]: Analyzing trace with hash -2065967819, now seen corresponding path program 1 times [2024-11-22 10:17:48,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 10:17:48,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705757024] [2024-11-22 10:17:48,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 10:17:48,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 10:17:48,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 10:17:48,671 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2024-11-22 10:17:48,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 10:17:48,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705757024] [2024-11-22 10:17:48,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1705757024] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 10:17:48,672 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 10:17:48,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-22 10:17:48,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796573058] [2024-11-22 10:17:48,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 10:17:48,672 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 10:17:48,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 10:17:48,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 10:17:48,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-22 10:17:48,673 INFO L87 Difference]: Start difference. First operand 570 states and 836 transitions. Second operand has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 2 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2024-11-22 10:17:49,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 10:17:49,071 INFO L93 Difference]: Finished difference Result 2370 states and 3492 transitions. [2024-11-22 10:17:49,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-22 10:17:49,072 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 2 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 177 [2024-11-22 10:17:49,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 10:17:49,079 INFO L225 Difference]: With dead ends: 2370 [2024-11-22 10:17:49,080 INFO L226 Difference]: Without dead ends: 1999 [2024-11-22 10:17:49,081 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2024-11-22 10:17:49,081 INFO L432 NwaCegarLoop]: 140 mSDtfsCounter, 784 mSDsluCounter, 497 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 396 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 784 SdHoareTripleChecker+Valid, 637 SdHoareTripleChecker+Invalid, 573 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 396 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-22 10:17:49,081 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [784 Valid, 637 Invalid, 573 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [396 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-22 10:17:49,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1999 states. [2024-11-22 10:17:49,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1999 to 1462. [2024-11-22 10:17:49,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1462 states, 1037 states have (on average 1.308582449373192) internal successors, (1357), 1049 states have internal predecessors, (1357), 392 states have call successors, (392), 32 states have call predecessors, (392), 32 states have return successors, (392), 380 states have call predecessors, (392), 392 states have call successors, (392) [2024-11-22 10:17:49,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1462 states to 1462 states and 2141 transitions. [2024-11-22 10:17:49,194 INFO L78 Accepts]: Start accepts. Automaton has 1462 states and 2141 transitions. Word has length 177 [2024-11-22 10:17:49,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 10:17:49,195 INFO L471 AbstractCegarLoop]: Abstraction has 1462 states and 2141 transitions. [2024-11-22 10:17:49,195 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 2 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2024-11-22 10:17:49,195 INFO L276 IsEmpty]: Start isEmpty. Operand 1462 states and 2141 transitions. [2024-11-22 10:17:49,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2024-11-22 10:17:49,195 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 10:17:49,196 INFO L215 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:17:49,196 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-22 10:17:49,196 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 10:17:49,196 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 10:17:49,196 INFO L85 PathProgramCache]: Analyzing trace with hash -290960457, now seen corresponding path program 1 times [2024-11-22 10:17:49,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 10:17:49,196 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694608728] [2024-11-22 10:17:49,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 10:17:49,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 10:17:49,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 10:17:51,759 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2024-11-22 10:17:51,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 10:17:51,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694608728] [2024-11-22 10:17:51,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [694608728] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 10:17:51,760 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 10:17:51,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-22 10:17:51,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610026279] [2024-11-22 10:17:51,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 10:17:51,760 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-22 10:17:51,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 10:17:51,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-22 10:17:51,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-11-22 10:17:51,761 INFO L87 Difference]: Start difference. First operand 1462 states and 2141 transitions. Second operand has 10 states, 10 states have (on average 5.0) internal successors, (50), 10 states have internal predecessors, (50), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-11-22 10:17:52,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 10:17:52,841 INFO L93 Difference]: Finished difference Result 2698 states and 3911 transitions. [2024-11-22 10:17:52,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-22 10:17:52,841 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.0) internal successors, (50), 10 states have internal predecessors, (50), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) Word has length 177 [2024-11-22 10:17:52,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 10:17:52,848 INFO L225 Difference]: With dead ends: 2698 [2024-11-22 10:17:52,849 INFO L226 Difference]: Without dead ends: 1710 [2024-11-22 10:17:52,851 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-11-22 10:17:52,852 INFO L432 NwaCegarLoop]: 154 mSDtfsCounter, 70 mSDsluCounter, 685 mSDsCounter, 0 mSdLazyCounter, 452 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 839 SdHoareTripleChecker+Invalid, 455 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 452 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-22 10:17:52,852 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 839 Invalid, 455 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 452 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-22 10:17:52,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1710 states. [2024-11-22 10:17:52,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1710 to 1477. [2024-11-22 10:17:52,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1477 states, 1052 states have (on average 1.3155893536121672) internal successors, (1384), 1064 states have internal predecessors, (1384), 392 states have call successors, (392), 32 states have call predecessors, (392), 32 states have return successors, (392), 380 states have call predecessors, (392), 392 states have call successors, (392) [2024-11-22 10:17:52,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1477 states to 1477 states and 2168 transitions. [2024-11-22 10:17:52,953 INFO L78 Accepts]: Start accepts. Automaton has 1477 states and 2168 transitions. Word has length 177 [2024-11-22 10:17:52,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 10:17:52,954 INFO L471 AbstractCegarLoop]: Abstraction has 1477 states and 2168 transitions. [2024-11-22 10:17:52,954 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.0) internal successors, (50), 10 states have internal predecessors, (50), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-11-22 10:17:52,954 INFO L276 IsEmpty]: Start isEmpty. Operand 1477 states and 2168 transitions. [2024-11-22 10:17:52,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2024-11-22 10:17:52,955 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 10:17:52,955 INFO L215 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:17:52,955 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-22 10:17:52,955 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 10:17:52,956 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 10:17:52,956 INFO L85 PathProgramCache]: Analyzing trace with hash -1972901594, now seen corresponding path program 1 times [2024-11-22 10:17:52,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 10:17:52,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [858004613] [2024-11-22 10:17:52,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 10:17:52,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 10:17:53,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 10:17:53,208 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 27 proven. 48 refuted. 0 times theorem prover too weak. 1225 trivial. 0 not checked. [2024-11-22 10:17:53,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 10:17:53,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [858004613] [2024-11-22 10:17:53,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [858004613] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 10:17:53,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2032254876] [2024-11-22 10:17:53,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 10:17:53,209 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 10:17:53,209 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 10:17:53,211 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 10:17:53,212 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-22 10:17:53,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 10:17:53,312 INFO L255 TraceCheckSpWp]: Trace formula consists of 434 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-22 10:17:53,316 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 10:17:53,528 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 619 proven. 48 refuted. 0 times theorem prover too weak. 633 trivial. 0 not checked. [2024-11-22 10:17:53,528 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 10:17:53,724 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 27 proven. 48 refuted. 0 times theorem prover too weak. 1225 trivial. 0 not checked. [2024-11-22 10:17:53,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2032254876] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 10:17:53,724 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 10:17:53,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2024-11-22 10:17:53,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805584904] [2024-11-22 10:17:53,725 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 10:17:53,725 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-22 10:17:53,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 10:17:53,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-22 10:17:53,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-11-22 10:17:53,726 INFO L87 Difference]: Start difference. First operand 1477 states and 2168 transitions. Second operand has 12 states, 12 states have (on average 6.0) internal successors, (72), 12 states have internal predecessors, (72), 2 states have call successors, (42), 2 states have call predecessors, (42), 4 states have return successors, (43), 2 states have call predecessors, (43), 2 states have call successors, (43) [2024-11-22 10:17:54,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 10:17:54,427 INFO L93 Difference]: Finished difference Result 2877 states and 4168 transitions. [2024-11-22 10:17:54,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-22 10:17:54,429 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 6.0) internal successors, (72), 12 states have internal predecessors, (72), 2 states have call successors, (42), 2 states have call predecessors, (42), 4 states have return successors, (43), 2 states have call predecessors, (43), 2 states have call successors, (43) Word has length 177 [2024-11-22 10:17:54,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 10:17:54,436 INFO L225 Difference]: With dead ends: 2877 [2024-11-22 10:17:54,436 INFO L226 Difference]: Without dead ends: 1759 [2024-11-22 10:17:54,439 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 378 GetRequests, 350 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=194, Invalid=562, Unknown=0, NotChecked=0, Total=756 [2024-11-22 10:17:54,439 INFO L432 NwaCegarLoop]: 156 mSDtfsCounter, 587 mSDsluCounter, 689 mSDsCounter, 0 mSdLazyCounter, 722 mSolverCounterSat, 175 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 597 SdHoareTripleChecker+Valid, 845 SdHoareTripleChecker+Invalid, 897 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 175 IncrementalHoareTripleChecker+Valid, 722 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-22 10:17:54,440 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [597 Valid, 845 Invalid, 897 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [175 Valid, 722 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-22 10:17:54,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1759 states. [2024-11-22 10:17:54,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1759 to 1470. [2024-11-22 10:17:54,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1470 states, 1032 states have (on average 1.2877906976744187) internal successors, (1329), 1044 states have internal predecessors, (1329), 392 states have call successors, (392), 45 states have call predecessors, (392), 45 states have return successors, (392), 380 states have call predecessors, (392), 392 states have call successors, (392) [2024-11-22 10:17:54,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1470 states to 1470 states and 2113 transitions. [2024-11-22 10:17:54,564 INFO L78 Accepts]: Start accepts. Automaton has 1470 states and 2113 transitions. Word has length 177 [2024-11-22 10:17:54,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 10:17:54,564 INFO L471 AbstractCegarLoop]: Abstraction has 1470 states and 2113 transitions. [2024-11-22 10:17:54,564 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.0) internal successors, (72), 12 states have internal predecessors, (72), 2 states have call successors, (42), 2 states have call predecessors, (42), 4 states have return successors, (43), 2 states have call predecessors, (43), 2 states have call successors, (43) [2024-11-22 10:17:54,564 INFO L276 IsEmpty]: Start isEmpty. Operand 1470 states and 2113 transitions. [2024-11-22 10:17:54,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2024-11-22 10:17:54,565 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 10:17:54,565 INFO L215 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:17:54,573 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-22 10:17:54,765 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-11-22 10:17:54,766 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 10:17:54,766 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 10:17:54,766 INFO L85 PathProgramCache]: Analyzing trace with hash -495330029, now seen corresponding path program 1 times [2024-11-22 10:17:54,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 10:17:54,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119518209] [2024-11-22 10:17:54,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 10:17:54,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 10:17:54,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 10:17:55,594 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 21 proven. 123 refuted. 0 times theorem prover too weak. 1156 trivial. 0 not checked. [2024-11-22 10:17:55,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 10:17:55,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119518209] [2024-11-22 10:17:55,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1119518209] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 10:17:55,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [341059650] [2024-11-22 10:17:55,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 10:17:55,595 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 10:17:55,595 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 10:17:55,596 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 10:17:55,599 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-22 10:17:55,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 10:17:55,717 INFO L255 TraceCheckSpWp]: Trace formula consists of 437 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-11-22 10:17:55,724 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 10:17:57,127 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 470 proven. 117 refuted. 0 times theorem prover too weak. 713 trivial. 0 not checked. [2024-11-22 10:17:57,127 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 10:18:04,353 WARN L851 $PredicateComparison]: unable to prove that (or (= (mod c_~var_1_10~0 256) 0) (forall ((v_z_13 Int)) (or (< (mod c_~var_1_15~0 65536) (+ (mod (mod (mod c_~var_1_6~0 256) v_z_13) 4294967296) 1)) (< v_z_13 0) (< (mod |c_ULTIMATE.start_step_~stepLocal_10~0#1| 65536) v_z_13)))) is different from false