./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-21.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3061b6dc Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-21.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 6343a1465750afdc947de8e9ff805a9cfece8acd0c6031287a1734d8c4b949b9 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-18 19:29:56,804 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-18 19:29:56,881 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-18 19:29:56,886 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-18 19:29:56,887 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-18 19:29:56,908 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-18 19:29:56,909 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-18 19:29:56,909 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-18 19:29:56,910 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-18 19:29:56,910 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-18 19:29:56,910 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-18 19:29:56,911 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-18 19:29:56,911 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-18 19:29:56,912 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-18 19:29:56,912 INFO L153 SettingsManager]: * Use SBE=true [2024-11-18 19:29:56,912 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-18 19:29:56,913 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-18 19:29:56,913 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-18 19:29:56,913 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-18 19:29:56,914 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-18 19:29:56,918 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-18 19:29:56,919 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-18 19:29:56,919 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-18 19:29:56,919 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-18 19:29:56,919 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-18 19:29:56,920 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-18 19:29:56,920 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-18 19:29:56,921 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-18 19:29:56,921 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-18 19:29:56,921 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-18 19:29:56,922 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-18 19:29:56,922 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-18 19:29:56,922 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 19:29:56,923 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-18 19:29:56,923 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-18 19:29:56,924 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-18 19:29:56,924 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-18 19:29:56,924 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-18 19:29:56,924 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-18 19:29:56,925 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-18 19:29:56,925 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-18 19:29:56,927 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-18 19:29:56,927 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6343a1465750afdc947de8e9ff805a9cfece8acd0c6031287a1734d8c4b949b9 [2024-11-18 19:29:57,209 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-18 19:29:57,241 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-18 19:29:57,245 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-18 19:29:57,247 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-18 19:29:57,247 INFO L274 PluginConnector]: CDTParser initialized [2024-11-18 19:29:57,249 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-21.i [2024-11-18 19:29:58,645 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-18 19:29:58,910 INFO L384 CDTParser]: Found 1 translation units. [2024-11-18 19:29:58,911 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-21.i [2024-11-18 19:29:58,923 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0e13e4fdf/f87c6a9b0bd5414ebfb71dd785298529/FLAG8b1016d6b [2024-11-18 19:29:59,237 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0e13e4fdf/f87c6a9b0bd5414ebfb71dd785298529 [2024-11-18 19:29:59,239 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-18 19:29:59,241 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-18 19:29:59,243 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-18 19:29:59,243 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-18 19:29:59,250 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-18 19:29:59,251 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 07:29:59" (1/1) ... [2024-11-18 19:29:59,254 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@226eb561 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:29:59, skipping insertion in model container [2024-11-18 19:29:59,254 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 07:29:59" (1/1) ... [2024-11-18 19:29:59,303 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-18 19:29:59,503 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_fillercode_fillercodesize_ps-cn-250_file-21.i[916,929] [2024-11-18 19:29:59,717 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 19:29:59,739 INFO L200 MainTranslator]: Completed pre-run [2024-11-18 19:29:59,763 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_fillercode_fillercodesize_ps-cn-250_file-21.i[916,929] [2024-11-18 19:29:59,847 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 19:29:59,877 INFO L204 MainTranslator]: Completed translation [2024-11-18 19:29:59,878 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:29:59 WrapperNode [2024-11-18 19:29:59,878 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-18 19:29:59,879 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-18 19:29:59,879 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-18 19:29:59,879 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-18 19:29:59,886 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:29:59" (1/1) ... [2024-11-18 19:29:59,904 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:29:59" (1/1) ... [2024-11-18 19:29:59,965 INFO L138 Inliner]: procedures = 26, calls = 99, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 660 [2024-11-18 19:29:59,969 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-18 19:29:59,970 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-18 19:29:59,970 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-18 19:29:59,970 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-18 19:29:59,981 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:29:59" (1/1) ... [2024-11-18 19:29:59,982 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:29:59" (1/1) ... [2024-11-18 19:29:59,990 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:29:59" (1/1) ... [2024-11-18 19:30:00,042 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]. [2024-11-18 19:30:00,042 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:29:59" (1/1) ... [2024-11-18 19:30:00,043 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:29:59" (1/1) ... [2024-11-18 19:30:00,069 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:29:59" (1/1) ... [2024-11-18 19:30:00,080 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:29:59" (1/1) ... [2024-11-18 19:30:00,086 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:29:59" (1/1) ... [2024-11-18 19:30:00,092 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:29:59" (1/1) ... [2024-11-18 19:30:00,104 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-18 19:30:00,105 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-18 19:30:00,105 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-18 19:30:00,105 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-18 19:30:00,106 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:29:59" (1/1) ... [2024-11-18 19:30:00,117 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 19:30:00,134 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 19:30:00,153 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) [2024-11-18 19:30:00,157 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 [2024-11-18 19:30:00,208 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-18 19:30:00,208 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-18 19:30:00,209 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-18 19:30:00,209 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-18 19:30:00,209 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-18 19:30:00,210 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-18 19:30:00,353 INFO L238 CfgBuilder]: Building ICFG [2024-11-18 19:30:00,355 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-18 19:30:01,350 INFO L? ?]: Removed 25 outVars from TransFormulas that were not future-live. [2024-11-18 19:30:01,350 INFO L287 CfgBuilder]: Performing block encoding [2024-11-18 19:30:01,376 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-18 19:30:01,378 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-18 19:30:01,378 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 07:30:01 BoogieIcfgContainer [2024-11-18 19:30:01,379 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-18 19:30:01,380 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-18 19:30:01,381 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-18 19:30:01,384 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-18 19:30:01,384 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 07:29:59" (1/3) ... [2024-11-18 19:30:01,385 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69c481a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 07:30:01, skipping insertion in model container [2024-11-18 19:30:01,386 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:29:59" (2/3) ... [2024-11-18 19:30:01,387 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69c481a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 07:30:01, skipping insertion in model container [2024-11-18 19:30:01,387 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 07:30:01" (3/3) ... [2024-11-18 19:30:01,389 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-250_file-21.i [2024-11-18 19:30:01,406 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-18 19:30:01,407 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-18 19:30:01,565 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-18 19:30:01,573 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;@1cf4649f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-18 19:30:01,574 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-18 19:30:01,581 INFO L276 IsEmpty]: Start isEmpty. Operand has 271 states, 182 states have (on average 1.5274725274725274) internal successors, (278), 183 states have internal predecessors, (278), 86 states have call successors, (86), 1 states have call predecessors, (86), 1 states have return successors, (86), 86 states have call predecessors, (86), 86 states have call successors, (86) [2024-11-18 19:30:01,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 536 [2024-11-18 19:30:01,654 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 19:30:01,656 INFO L215 NwaCegarLoop]: trace histogram [86, 86, 86, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 19:30:01,657 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 19:30:01,662 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 19:30:01,664 INFO L85 PathProgramCache]: Analyzing trace with hash 46127560, now seen corresponding path program 1 times [2024-11-18 19:30:01,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 19:30:01,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457439355] [2024-11-18 19:30:01,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 19:30:01,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 19:30:01,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 19:30:02,324 INFO L134 CoverageAnalysis]: Checked inductivity of 14620 backedges. 0 proven. 170 refuted. 0 times theorem prover too weak. 14450 trivial. 0 not checked. [2024-11-18 19:30:02,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 19:30:02,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [457439355] [2024-11-18 19:30:02,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [457439355] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 19:30:02,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2051185515] [2024-11-18 19:30:02,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 19:30:02,328 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 19:30:02,329 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 19:30:02,331 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) [2024-11-18 19:30:02,332 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-18 19:30:02,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 19:30:02,669 INFO L255 TraceCheckSpWp]: Trace formula consists of 1194 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-18 19:30:02,692 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 19:30:02,819 INFO L134 CoverageAnalysis]: Checked inductivity of 14620 backedges. 170 proven. 0 refuted. 0 times theorem prover too weak. 14450 trivial. 0 not checked. [2024-11-18 19:30:02,820 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 19:30:02,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2051185515] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 19:30:02,820 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 19:30:02,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-18 19:30:02,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091769514] [2024-11-18 19:30:02,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 19:30:02,830 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-18 19:30:02,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 19:30:02,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-18 19:30:02,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-18 19:30:02,864 INFO L87 Difference]: Start difference. First operand has 271 states, 182 states have (on average 1.5274725274725274) internal successors, (278), 183 states have internal predecessors, (278), 86 states have call successors, (86), 1 states have call predecessors, (86), 1 states have return successors, (86), 86 states have call predecessors, (86), 86 states have call successors, (86) Second operand has 2 states, 2 states have (on average 55.0) internal successors, (110), 2 states have internal predecessors, (110), 2 states have call successors, (86), 2 states have call predecessors, (86), 1 states have return successors, (86), 1 states have call predecessors, (86), 2 states have call successors, (86) [2024-11-18 19:30:02,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 19:30:02,942 INFO L93 Difference]: Finished difference Result 524 states and 961 transitions. [2024-11-18 19:30:02,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-18 19:30:02,945 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 55.0) internal successors, (110), 2 states have internal predecessors, (110), 2 states have call successors, (86), 2 states have call predecessors, (86), 1 states have return successors, (86), 1 states have call predecessors, (86), 2 states have call successors, (86) Word has length 535 [2024-11-18 19:30:02,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 19:30:02,960 INFO L225 Difference]: With dead ends: 524 [2024-11-18 19:30:02,960 INFO L226 Difference]: Without dead ends: 256 [2024-11-18 19:30:02,970 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 536 GetRequests, 536 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-18 19:30:02,974 INFO L432 NwaCegarLoop]: 423 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, 423 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 [2024-11-18 19:30:02,975 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 423 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 19:30:02,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2024-11-18 19:30:03,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 256. [2024-11-18 19:30:03,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 256 states, 168 states have (on average 1.494047619047619) internal successors, (251), 168 states have internal predecessors, (251), 86 states have call successors, (86), 1 states have call predecessors, (86), 1 states have return successors, (86), 86 states have call predecessors, (86), 86 states have call successors, (86) [2024-11-18 19:30:03,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 423 transitions. [2024-11-18 19:30:03,074 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 423 transitions. Word has length 535 [2024-11-18 19:30:03,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 19:30:03,076 INFO L471 AbstractCegarLoop]: Abstraction has 256 states and 423 transitions. [2024-11-18 19:30:03,076 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 55.0) internal successors, (110), 2 states have internal predecessors, (110), 2 states have call successors, (86), 2 states have call predecessors, (86), 1 states have return successors, (86), 1 states have call predecessors, (86), 2 states have call successors, (86) [2024-11-18 19:30:03,076 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 423 transitions. [2024-11-18 19:30:03,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 536 [2024-11-18 19:30:03,091 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 19:30:03,092 INFO L215 NwaCegarLoop]: trace histogram [86, 86, 86, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 19:30:03,114 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-18 19:30:03,296 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 [2024-11-18 19:30:03,297 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 19:30:03,298 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 19:30:03,298 INFO L85 PathProgramCache]: Analyzing trace with hash 534206840, now seen corresponding path program 1 times [2024-11-18 19:30:03,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 19:30:03,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766335138] [2024-11-18 19:30:03,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 19:30:03,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 19:30:03,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 19:30:04,011 INFO L134 CoverageAnalysis]: Checked inductivity of 14620 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14620 trivial. 0 not checked. [2024-11-18 19:30:04,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 19:30:04,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1766335138] [2024-11-18 19:30:04,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1766335138] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 19:30:04,013 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 19:30:04,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 19:30:04,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186454862] [2024-11-18 19:30:04,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 19:30:04,015 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 19:30:04,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 19:30:04,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 19:30:04,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-18 19:30:04,017 INFO L87 Difference]: Start difference. First operand 256 states and 423 transitions. Second operand has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 2 states have call successors, (86), 1 states have call predecessors, (86), 1 states have return successors, (86), 2 states have call predecessors, (86), 2 states have call successors, (86) [2024-11-18 19:30:04,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 19:30:04,200 INFO L93 Difference]: Finished difference Result 762 states and 1263 transitions. [2024-11-18 19:30:04,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 19:30:04,201 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 2 states have call successors, (86), 1 states have call predecessors, (86), 1 states have return successors, (86), 2 states have call predecessors, (86), 2 states have call successors, (86) Word has length 535 [2024-11-18 19:30:04,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 19:30:04,210 INFO L225 Difference]: With dead ends: 762 [2024-11-18 19:30:04,210 INFO L226 Difference]: Without dead ends: 509 [2024-11-18 19:30:04,214 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-18 19:30:04,215 INFO L432 NwaCegarLoop]: 385 mSDtfsCounter, 333 mSDsluCounter, 780 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 333 SdHoareTripleChecker+Valid, 1165 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 19:30:04,216 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [333 Valid, 1165 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 19:30:04,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 509 states. [2024-11-18 19:30:04,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 509 to 507. [2024-11-18 19:30:04,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 507 states, 332 states have (on average 1.4969879518072289) internal successors, (497), 332 states have internal predecessors, (497), 172 states have call successors, (172), 2 states have call predecessors, (172), 2 states have return successors, (172), 172 states have call predecessors, (172), 172 states have call successors, (172) [2024-11-18 19:30:04,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 507 states to 507 states and 841 transitions. [2024-11-18 19:30:04,365 INFO L78 Accepts]: Start accepts. Automaton has 507 states and 841 transitions. Word has length 535 [2024-11-18 19:30:04,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 19:30:04,368 INFO L471 AbstractCegarLoop]: Abstraction has 507 states and 841 transitions. [2024-11-18 19:30:04,369 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 2 states have call successors, (86), 1 states have call predecessors, (86), 1 states have return successors, (86), 2 states have call predecessors, (86), 2 states have call successors, (86) [2024-11-18 19:30:04,369 INFO L276 IsEmpty]: Start isEmpty. Operand 507 states and 841 transitions. [2024-11-18 19:30:04,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 537 [2024-11-18 19:30:04,382 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 19:30:04,382 INFO L215 NwaCegarLoop]: trace histogram [86, 86, 86, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 19:30:04,382 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-18 19:30:04,383 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 19:30:04,383 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 19:30:04,384 INFO L85 PathProgramCache]: Analyzing trace with hash 1437181161, now seen corresponding path program 1 times [2024-11-18 19:30:04,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 19:30:04,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004936798] [2024-11-18 19:30:04,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 19:30:04,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 19:30:04,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 19:30:04,831 INFO L134 CoverageAnalysis]: Checked inductivity of 14620 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14620 trivial. 0 not checked. [2024-11-18 19:30:04,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 19:30:04,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004936798] [2024-11-18 19:30:04,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1004936798] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 19:30:04,836 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 19:30:04,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 19:30:04,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062746301] [2024-11-18 19:30:04,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 19:30:04,837 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 19:30:04,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 19:30:04,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 19:30:04,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 19:30:04,839 INFO L87 Difference]: Start difference. First operand 507 states and 841 transitions. Second operand has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 1 states have call successors, (86), 1 states have call predecessors, (86), 1 states have return successors, (86), 1 states have call predecessors, (86), 1 states have call successors, (86) [2024-11-18 19:30:05,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 19:30:05,179 INFO L93 Difference]: Finished difference Result 1165 states and 1931 transitions. [2024-11-18 19:30:05,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 19:30:05,182 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 1 states have call successors, (86), 1 states have call predecessors, (86), 1 states have return successors, (86), 1 states have call predecessors, (86), 1 states have call successors, (86) Word has length 536 [2024-11-18 19:30:05,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 19:30:05,192 INFO L225 Difference]: With dead ends: 1165 [2024-11-18 19:30:05,193 INFO L226 Difference]: Without dead ends: 661 [2024-11-18 19:30:05,194 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-18 19:30:05,196 INFO L432 NwaCegarLoop]: 498 mSDtfsCounter, 601 mSDsluCounter, 933 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 601 SdHoareTripleChecker+Valid, 1431 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-18 19:30:05,198 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [601 Valid, 1431 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-18 19:30:05,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 661 states. [2024-11-18 19:30:05,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 661 to 656. [2024-11-18 19:30:05,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 656 states, 444 states have (on average 1.5135135135135136) internal successors, (672), 445 states have internal predecessors, (672), 208 states have call successors, (208), 3 states have call predecessors, (208), 3 states have return successors, (208), 207 states have call predecessors, (208), 208 states have call successors, (208) [2024-11-18 19:30:05,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 656 states to 656 states and 1088 transitions. [2024-11-18 19:30:05,286 INFO L78 Accepts]: Start accepts. Automaton has 656 states and 1088 transitions. Word has length 536 [2024-11-18 19:30:05,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 19:30:05,287 INFO L471 AbstractCegarLoop]: Abstraction has 656 states and 1088 transitions. [2024-11-18 19:30:05,288 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 1 states have call successors, (86), 1 states have call predecessors, (86), 1 states have return successors, (86), 1 states have call predecessors, (86), 1 states have call successors, (86) [2024-11-18 19:30:05,288 INFO L276 IsEmpty]: Start isEmpty. Operand 656 states and 1088 transitions. [2024-11-18 19:30:05,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 537 [2024-11-18 19:30:05,296 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 19:30:05,297 INFO L215 NwaCegarLoop]: trace histogram [86, 86, 86, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 19:30:05,297 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-18 19:30:05,297 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 19:30:05,298 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 19:30:05,298 INFO L85 PathProgramCache]: Analyzing trace with hash 1241387757, now seen corresponding path program 1 times [2024-11-18 19:30:05,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 19:30:05,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624404336] [2024-11-18 19:30:05,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 19:30:05,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 19:30:05,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 19:30:05,564 INFO L134 CoverageAnalysis]: Checked inductivity of 14620 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14620 trivial. 0 not checked. [2024-11-18 19:30:05,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 19:30:05,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [624404336] [2024-11-18 19:30:05,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [624404336] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 19:30:05,565 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 19:30:05,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 19:30:05,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304979653] [2024-11-18 19:30:05,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 19:30:05,566 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 19:30:05,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 19:30:05,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 19:30:05,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-18 19:30:05,568 INFO L87 Difference]: Start difference. First operand 656 states and 1088 transitions. Second operand has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 1 states have call successors, (86), 1 states have call predecessors, (86), 1 states have return successors, (86), 1 states have call predecessors, (86), 1 states have call successors, (86) [2024-11-18 19:30:05,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 19:30:05,819 INFO L93 Difference]: Finished difference Result 2197 states and 3646 transitions. [2024-11-18 19:30:05,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 19:30:05,819 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 1 states have call successors, (86), 1 states have call predecessors, (86), 1 states have return successors, (86), 1 states have call predecessors, (86), 1 states have call successors, (86) Word has length 536 [2024-11-18 19:30:05,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 19:30:05,831 INFO L225 Difference]: With dead ends: 2197 [2024-11-18 19:30:05,831 INFO L226 Difference]: Without dead ends: 1544 [2024-11-18 19:30:05,834 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-18 19:30:05,835 INFO L432 NwaCegarLoop]: 593 mSDtfsCounter, 511 mSDsluCounter, 931 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 511 SdHoareTripleChecker+Valid, 1524 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 19:30:05,837 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [511 Valid, 1524 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 19:30:05,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1544 states. [2024-11-18 19:30:05,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1544 to 1535. [2024-11-18 19:30:05,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1535 states, 1131 states have (on average 1.5473032714412025) internal successors, (1750), 1138 states have internal predecessors, (1750), 394 states have call successors, (394), 9 states have call predecessors, (394), 9 states have return successors, (394), 387 states have call predecessors, (394), 394 states have call successors, (394) [2024-11-18 19:30:05,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1535 states to 1535 states and 2538 transitions. [2024-11-18 19:30:05,968 INFO L78 Accepts]: Start accepts. Automaton has 1535 states and 2538 transitions. Word has length 536 [2024-11-18 19:30:05,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 19:30:05,969 INFO L471 AbstractCegarLoop]: Abstraction has 1535 states and 2538 transitions. [2024-11-18 19:30:05,970 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 1 states have call successors, (86), 1 states have call predecessors, (86), 1 states have return successors, (86), 1 states have call predecessors, (86), 1 states have call successors, (86) [2024-11-18 19:30:05,970 INFO L276 IsEmpty]: Start isEmpty. Operand 1535 states and 2538 transitions. [2024-11-18 19:30:05,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 537 [2024-11-18 19:30:05,980 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 19:30:05,980 INFO L215 NwaCegarLoop]: trace histogram [86, 86, 86, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 19:30:05,980 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-18 19:30:05,981 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 19:30:05,981 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 19:30:05,981 INFO L85 PathProgramCache]: Analyzing trace with hash 1489534251, now seen corresponding path program 1 times [2024-11-18 19:30:05,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 19:30:05,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119063361] [2024-11-18 19:30:05,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 19:30:05,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 19:30:06,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 19:30:06,381 INFO L134 CoverageAnalysis]: Checked inductivity of 14620 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14620 trivial. 0 not checked. [2024-11-18 19:30:06,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 19:30:06,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2119063361] [2024-11-18 19:30:06,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2119063361] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 19:30:06,382 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 19:30:06,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 19:30:06,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548173744] [2024-11-18 19:30:06,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 19:30:06,384 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 19:30:06,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 19:30:06,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 19:30:06,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-18 19:30:06,385 INFO L87 Difference]: Start difference. First operand 1535 states and 2538 transitions. Second operand has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 states have internal predecessors, (109), 2 states have call successors, (86), 1 states have call predecessors, (86), 1 states have return successors, (86), 2 states have call predecessors, (86), 2 states have call successors, (86) [2024-11-18 19:30:06,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 19:30:06,590 INFO L93 Difference]: Finished difference Result 3071 states and 5078 transitions. [2024-11-18 19:30:06,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 19:30:06,591 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 states have internal predecessors, (109), 2 states have call successors, (86), 1 states have call predecessors, (86), 1 states have return successors, (86), 2 states have call predecessors, (86), 2 states have call successors, (86) Word has length 536 [2024-11-18 19:30:06,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 19:30:06,603 INFO L225 Difference]: With dead ends: 3071 [2024-11-18 19:30:06,603 INFO L226 Difference]: Without dead ends: 1539 [2024-11-18 19:30:06,608 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-18 19:30:06,609 INFO L432 NwaCegarLoop]: 408 mSDtfsCounter, 354 mSDsluCounter, 1180 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 354 SdHoareTripleChecker+Valid, 1588 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 19:30:06,610 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [354 Valid, 1588 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 19:30:06,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1539 states. [2024-11-18 19:30:06,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1539 to 1537. [2024-11-18 19:30:06,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1537 states, 1133 states have (on average 1.5463371579876435) internal successors, (1752), 1140 states have internal predecessors, (1752), 394 states have call successors, (394), 9 states have call predecessors, (394), 9 states have return successors, (394), 387 states have call predecessors, (394), 394 states have call successors, (394) [2024-11-18 19:30:06,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1537 states to 1537 states and 2540 transitions. [2024-11-18 19:30:06,716 INFO L78 Accepts]: Start accepts. Automaton has 1537 states and 2540 transitions. Word has length 536 [2024-11-18 19:30:06,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 19:30:06,717 INFO L471 AbstractCegarLoop]: Abstraction has 1537 states and 2540 transitions. [2024-11-18 19:30:06,718 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 states have internal predecessors, (109), 2 states have call successors, (86), 1 states have call predecessors, (86), 1 states have return successors, (86), 2 states have call predecessors, (86), 2 states have call successors, (86) [2024-11-18 19:30:06,718 INFO L276 IsEmpty]: Start isEmpty. Operand 1537 states and 2540 transitions. [2024-11-18 19:30:06,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 537 [2024-11-18 19:30:06,722 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 19:30:06,742 INFO L215 NwaCegarLoop]: trace histogram [86, 86, 86, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 19:30:06,743 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-18 19:30:06,743 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 19:30:06,743 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 19:30:06,744 INFO L85 PathProgramCache]: Analyzing trace with hash -877160343, now seen corresponding path program 1 times [2024-11-18 19:30:06,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 19:30:06,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580392415] [2024-11-18 19:30:06,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 19:30:06,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 19:30:06,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 19:30:07,313 INFO L134 CoverageAnalysis]: Checked inductivity of 14620 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14620 trivial. 0 not checked. [2024-11-18 19:30:07,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 19:30:07,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580392415] [2024-11-18 19:30:07,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1580392415] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 19:30:07,315 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 19:30:07,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 19:30:07,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620885027] [2024-11-18 19:30:07,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 19:30:07,316 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 19:30:07,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 19:30:07,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 19:30:07,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 19:30:07,317 INFO L87 Difference]: Start difference. First operand 1537 states and 2540 transitions. Second operand has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 1 states have call successors, (86), 1 states have call predecessors, (86), 1 states have return successors, (86), 1 states have call predecessors, (86), 1 states have call successors, (86) [2024-11-18 19:30:07,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 19:30:07,414 INFO L93 Difference]: Finished difference Result 3062 states and 5062 transitions. [2024-11-18 19:30:07,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 19:30:07,415 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 1 states have call successors, (86), 1 states have call predecessors, (86), 1 states have return successors, (86), 1 states have call predecessors, (86), 1 states have call successors, (86) Word has length 536 [2024-11-18 19:30:07,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 19:30:07,426 INFO L225 Difference]: With dead ends: 3062 [2024-11-18 19:30:07,426 INFO L226 Difference]: Without dead ends: 1528 [2024-11-18 19:30:07,431 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 [2024-11-18 19:30:07,432 INFO L432 NwaCegarLoop]: 415 mSDtfsCounter, 259 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 259 SdHoareTripleChecker+Valid, 415 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 19:30:07,432 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [259 Valid, 415 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 19:30:07,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1528 states. [2024-11-18 19:30:07,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1528 to 1528. [2024-11-18 19:30:07,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1528 states, 1124 states have (on average 1.5213523131672597) internal successors, (1710), 1131 states have internal predecessors, (1710), 394 states have call successors, (394), 9 states have call predecessors, (394), 9 states have return successors, (394), 387 states have call predecessors, (394), 394 states have call successors, (394) [2024-11-18 19:30:07,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1528 states to 1528 states and 2498 transitions. [2024-11-18 19:30:07,555 INFO L78 Accepts]: Start accepts. Automaton has 1528 states and 2498 transitions. Word has length 536 [2024-11-18 19:30:07,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 19:30:07,556 INFO L471 AbstractCegarLoop]: Abstraction has 1528 states and 2498 transitions. [2024-11-18 19:30:07,556 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 1 states have call successors, (86), 1 states have call predecessors, (86), 1 states have return successors, (86), 1 states have call predecessors, (86), 1 states have call successors, (86) [2024-11-18 19:30:07,556 INFO L276 IsEmpty]: Start isEmpty. Operand 1528 states and 2498 transitions. [2024-11-18 19:30:07,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 537 [2024-11-18 19:30:07,560 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 19:30:07,561 INFO L215 NwaCegarLoop]: trace histogram [86, 86, 86, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 19:30:07,561 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-18 19:30:07,561 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 19:30:07,561 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 19:30:07,562 INFO L85 PathProgramCache]: Analyzing trace with hash 1173823655, now seen corresponding path program 1 times [2024-11-18 19:30:07,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 19:30:07,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445018851] [2024-11-18 19:30:07,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 19:30:07,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 19:30:07,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 19:30:08,239 INFO L134 CoverageAnalysis]: Checked inductivity of 14620 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14620 trivial. 0 not checked. [2024-11-18 19:30:08,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 19:30:08,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [445018851] [2024-11-18 19:30:08,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [445018851] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 19:30:08,240 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 19:30:08,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 19:30:08,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056707262] [2024-11-18 19:30:08,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 19:30:08,241 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 19:30:08,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 19:30:08,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 19:30:08,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 19:30:08,243 INFO L87 Difference]: Start difference. First operand 1528 states and 2498 transitions. Second operand has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 1 states have call successors, (86), 1 states have call predecessors, (86), 1 states have return successors, (86), 1 states have call predecessors, (86), 1 states have call successors, (86) [2024-11-18 19:30:08,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 19:30:08,502 INFO L93 Difference]: Finished difference Result 4578 states and 7488 transitions. [2024-11-18 19:30:08,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 19:30:08,504 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 1 states have call successors, (86), 1 states have call predecessors, (86), 1 states have return successors, (86), 1 states have call predecessors, (86), 1 states have call successors, (86) Word has length 536 [2024-11-18 19:30:08,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 19:30:08,524 INFO L225 Difference]: With dead ends: 4578 [2024-11-18 19:30:08,524 INFO L226 Difference]: Without dead ends: 3053 [2024-11-18 19:30:08,530 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 19:30:08,532 INFO L432 NwaCegarLoop]: 484 mSDtfsCounter, 259 mSDsluCounter, 400 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 259 SdHoareTripleChecker+Valid, 884 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 19:30:08,532 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [259 Valid, 884 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 19:30:08,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3053 states. [2024-11-18 19:30:08,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3053 to 3011. [2024-11-18 19:30:08,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3011 states, 2204 states have (on average 1.5140653357531761) internal successors, (3337), 2218 states have internal predecessors, (3337), 788 states have call successors, (788), 18 states have call predecessors, (788), 18 states have return successors, (788), 774 states have call predecessors, (788), 788 states have call successors, (788) [2024-11-18 19:30:08,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3011 states to 3011 states and 4913 transitions. [2024-11-18 19:30:08,900 INFO L78 Accepts]: Start accepts. Automaton has 3011 states and 4913 transitions. Word has length 536 [2024-11-18 19:30:08,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 19:30:08,901 INFO L471 AbstractCegarLoop]: Abstraction has 3011 states and 4913 transitions. [2024-11-18 19:30:08,901 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 1 states have call successors, (86), 1 states have call predecessors, (86), 1 states have return successors, (86), 1 states have call predecessors, (86), 1 states have call successors, (86) [2024-11-18 19:30:08,902 INFO L276 IsEmpty]: Start isEmpty. Operand 3011 states and 4913 transitions. [2024-11-18 19:30:08,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 538 [2024-11-18 19:30:08,910 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 19:30:08,911 INFO L215 NwaCegarLoop]: trace histogram [86, 86, 86, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 19:30:08,911 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-18 19:30:08,911 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 19:30:08,912 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 19:30:08,912 INFO L85 PathProgramCache]: Analyzing trace with hash -1036054148, now seen corresponding path program 1 times [2024-11-18 19:30:08,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 19:30:08,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357284646] [2024-11-18 19:30:08,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 19:30:08,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 19:30:09,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 19:30:09,729 INFO L134 CoverageAnalysis]: Checked inductivity of 14620 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14620 trivial. 0 not checked. [2024-11-18 19:30:09,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 19:30:09,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [357284646] [2024-11-18 19:30:09,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [357284646] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 19:30:09,730 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 19:30:09,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 19:30:09,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132623668] [2024-11-18 19:30:09,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 19:30:09,732 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 19:30:09,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 19:30:09,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 19:30:09,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-18 19:30:09,733 INFO L87 Difference]: Start difference. First operand 3011 states and 4913 transitions. Second operand has 5 states, 5 states have (on average 22.0) internal successors, (110), 5 states have internal predecessors, (110), 2 states have call successors, (86), 1 states have call predecessors, (86), 1 states have return successors, (86), 2 states have call predecessors, (86), 2 states have call successors, (86) [2024-11-18 19:30:10,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 19:30:10,746 INFO L93 Difference]: Finished difference Result 8435 states and 13749 transitions. [2024-11-18 19:30:10,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 19:30:10,747 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.0) internal successors, (110), 5 states have internal predecessors, (110), 2 states have call successors, (86), 1 states have call predecessors, (86), 1 states have return successors, (86), 2 states have call predecessors, (86), 2 states have call successors, (86) Word has length 537 [2024-11-18 19:30:10,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 19:30:10,783 INFO L225 Difference]: With dead ends: 8435 [2024-11-18 19:30:10,783 INFO L226 Difference]: Without dead ends: 5427 [2024-11-18 19:30:10,794 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-11-18 19:30:10,796 INFO L432 NwaCegarLoop]: 476 mSDtfsCounter, 847 mSDsluCounter, 217 mSDsCounter, 0 mSdLazyCounter, 209 mSolverCounterSat, 225 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 847 SdHoareTripleChecker+Valid, 693 SdHoareTripleChecker+Invalid, 434 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 225 IncrementalHoareTripleChecker+Valid, 209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-18 19:30:10,796 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [847 Valid, 693 Invalid, 434 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [225 Valid, 209 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-18 19:30:10,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5427 states. [2024-11-18 19:30:11,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5427 to 5413. [2024-11-18 19:30:11,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5413 states, 4048 states have (on average 1.5108695652173914) internal successors, (6116), 4080 states have internal predecessors, (6116), 1328 states have call successors, (1328), 36 states have call predecessors, (1328), 36 states have return successors, (1328), 1296 states have call predecessors, (1328), 1328 states have call successors, (1328) [2024-11-18 19:30:11,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5413 states to 5413 states and 8772 transitions. [2024-11-18 19:30:11,394 INFO L78 Accepts]: Start accepts. Automaton has 5413 states and 8772 transitions. Word has length 537 [2024-11-18 19:30:11,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 19:30:11,396 INFO L471 AbstractCegarLoop]: Abstraction has 5413 states and 8772 transitions. [2024-11-18 19:30:11,396 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.0) internal successors, (110), 5 states have internal predecessors, (110), 2 states have call successors, (86), 1 states have call predecessors, (86), 1 states have return successors, (86), 2 states have call predecessors, (86), 2 states have call successors, (86) [2024-11-18 19:30:11,396 INFO L276 IsEmpty]: Start isEmpty. Operand 5413 states and 8772 transitions. [2024-11-18 19:30:11,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 538 [2024-11-18 19:30:11,404 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 19:30:11,404 INFO L215 NwaCegarLoop]: trace histogram [86, 86, 86, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 19:30:11,404 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-18 19:30:11,405 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 19:30:11,405 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 19:30:11,405 INFO L85 PathProgramCache]: Analyzing trace with hash -1545527238, now seen corresponding path program 1 times [2024-11-18 19:30:11,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 19:30:11,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296738451] [2024-11-18 19:30:11,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 19:30:11,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 19:30:11,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 19:30:13,862 INFO L134 CoverageAnalysis]: Checked inductivity of 14620 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14620 trivial. 0 not checked. [2024-11-18 19:30:13,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 19:30:13,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296738451] [2024-11-18 19:30:13,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [296738451] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 19:30:13,863 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 19:30:13,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 19:30:13,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663969215] [2024-11-18 19:30:13,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 19:30:13,864 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 19:30:13,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 19:30:13,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 19:30:13,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-18 19:30:13,865 INFO L87 Difference]: Start difference. First operand 5413 states and 8772 transitions. Second operand has 5 states, 5 states have (on average 22.0) internal successors, (110), 5 states have internal predecessors, (110), 1 states have call successors, (86), 1 states have call predecessors, (86), 1 states have return successors, (86), 1 states have call predecessors, (86), 1 states have call successors, (86) [2024-11-18 19:30:15,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 19:30:15,223 INFO L93 Difference]: Finished difference Result 15489 states and 24986 transitions. [2024-11-18 19:30:15,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 19:30:15,224 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.0) internal successors, (110), 5 states have internal predecessors, (110), 1 states have call successors, (86), 1 states have call predecessors, (86), 1 states have return successors, (86), 1 states have call predecessors, (86), 1 states have call successors, (86) Word has length 537 [2024-11-18 19:30:15,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 19:30:15,309 INFO L225 Difference]: With dead ends: 15489 [2024-11-18 19:30:15,310 INFO L226 Difference]: Without dead ends: 10079 [2024-11-18 19:30:15,328 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-18 19:30:15,330 INFO L432 NwaCegarLoop]: 564 mSDtfsCounter, 827 mSDsluCounter, 915 mSDsCounter, 0 mSdLazyCounter, 229 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 827 SdHoareTripleChecker+Valid, 1479 SdHoareTripleChecker+Invalid, 302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-18 19:30:15,331 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [827 Valid, 1479 Invalid, 302 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 229 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-18 19:30:15,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10079 states. [2024-11-18 19:30:16,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10079 to 5639. [2024-11-18 19:30:16,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5639 states, 4274 states have (on average 1.5212915301824987) internal successors, (6502), 4306 states have internal predecessors, (6502), 1328 states have call successors, (1328), 36 states have call predecessors, (1328), 36 states have return successors, (1328), 1296 states have call predecessors, (1328), 1328 states have call successors, (1328) [2024-11-18 19:30:16,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5639 states to 5639 states and 9158 transitions. [2024-11-18 19:30:16,150 INFO L78 Accepts]: Start accepts. Automaton has 5639 states and 9158 transitions. Word has length 537 [2024-11-18 19:30:16,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 19:30:16,151 INFO L471 AbstractCegarLoop]: Abstraction has 5639 states and 9158 transitions. [2024-11-18 19:30:16,155 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.0) internal successors, (110), 5 states have internal predecessors, (110), 1 states have call successors, (86), 1 states have call predecessors, (86), 1 states have return successors, (86), 1 states have call predecessors, (86), 1 states have call successors, (86) [2024-11-18 19:30:16,156 INFO L276 IsEmpty]: Start isEmpty. Operand 5639 states and 9158 transitions. [2024-11-18 19:30:16,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 538 [2024-11-18 19:30:16,171 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 19:30:16,172 INFO L215 NwaCegarLoop]: trace histogram [86, 86, 86, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 19:30:16,172 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-18 19:30:16,172 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 19:30:16,172 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 19:30:16,173 INFO L85 PathProgramCache]: Analyzing trace with hash 904072892, now seen corresponding path program 1 times [2024-11-18 19:30:16,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 19:30:16,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464725029] [2024-11-18 19:30:16,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 19:30:16,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 19:30:16,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 19:30:18,373 INFO L134 CoverageAnalysis]: Checked inductivity of 14620 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14620 trivial. 0 not checked. [2024-11-18 19:30:18,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 19:30:18,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464725029] [2024-11-18 19:30:18,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1464725029] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 19:30:18,374 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 19:30:18,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 19:30:18,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461352898] [2024-11-18 19:30:18,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 19:30:18,375 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 19:30:18,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 19:30:18,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 19:30:18,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-18 19:30:18,377 INFO L87 Difference]: Start difference. First operand 5639 states and 9158 transitions. Second operand has 6 states, 6 states have (on average 18.333333333333332) internal successors, (110), 6 states have internal predecessors, (110), 1 states have call successors, (86), 1 states have call predecessors, (86), 1 states have return successors, (86), 1 states have call predecessors, (86), 1 states have call successors, (86) [2024-11-18 19:30:19,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 19:30:19,409 INFO L93 Difference]: Finished difference Result 13583 states and 21519 transitions. [2024-11-18 19:30:19,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 19:30:19,410 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.333333333333332) internal successors, (110), 6 states have internal predecessors, (110), 1 states have call successors, (86), 1 states have call predecessors, (86), 1 states have return successors, (86), 1 states have call predecessors, (86), 1 states have call successors, (86) Word has length 537 [2024-11-18 19:30:19,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 19:30:19,457 INFO L225 Difference]: With dead ends: 13583 [2024-11-18 19:30:19,457 INFO L226 Difference]: Without dead ends: 7947 [2024-11-18 19:30:19,477 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-18 19:30:19,478 INFO L432 NwaCegarLoop]: 428 mSDtfsCounter, 98 mSDsluCounter, 1227 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 1655 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-18 19:30:19,480 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 1655 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-18 19:30:19,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7947 states. [2024-11-18 19:30:20,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7947 to 7511. [2024-11-18 19:30:20,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7511 states, 5786 states have (on average 1.4783961285862426) internal successors, (8554), 5854 states have internal predecessors, (8554), 1616 states have call successors, (1616), 108 states have call predecessors, (1616), 108 states have return successors, (1616), 1548 states have call predecessors, (1616), 1616 states have call successors, (1616) [2024-11-18 19:30:20,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7511 states to 7511 states and 11786 transitions. [2024-11-18 19:30:20,277 INFO L78 Accepts]: Start accepts. Automaton has 7511 states and 11786 transitions. Word has length 537 [2024-11-18 19:30:20,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 19:30:20,278 INFO L471 AbstractCegarLoop]: Abstraction has 7511 states and 11786 transitions. [2024-11-18 19:30:20,279 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.333333333333332) internal successors, (110), 6 states have internal predecessors, (110), 1 states have call successors, (86), 1 states have call predecessors, (86), 1 states have return successors, (86), 1 states have call predecessors, (86), 1 states have call successors, (86) [2024-11-18 19:30:20,279 INFO L276 IsEmpty]: Start isEmpty. Operand 7511 states and 11786 transitions. [2024-11-18 19:30:20,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 538 [2024-11-18 19:30:20,291 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 19:30:20,291 INFO L215 NwaCegarLoop]: trace histogram [86, 86, 86, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 19:30:20,292 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-18 19:30:20,292 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 19:30:20,292 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 19:30:20,293 INFO L85 PathProgramCache]: Analyzing trace with hash 1162238330, now seen corresponding path program 1 times [2024-11-18 19:30:20,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 19:30:20,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007538277] [2024-11-18 19:30:20,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 19:30:20,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 19:30:20,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 19:30:20,598 INFO L134 CoverageAnalysis]: Checked inductivity of 14620 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14620 trivial. 0 not checked. [2024-11-18 19:30:20,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 19:30:20,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007538277] [2024-11-18 19:30:20,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2007538277] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 19:30:20,599 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 19:30:20,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 19:30:20,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436724073] [2024-11-18 19:30:20,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 19:30:20,600 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 19:30:20,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 19:30:20,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 19:30:20,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 19:30:20,602 INFO L87 Difference]: Start difference. First operand 7511 states and 11786 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 1 states have call successors, (86), 1 states have call predecessors, (86), 1 states have return successors, (86), 1 states have call predecessors, (86), 1 states have call successors, (86) [2024-11-18 19:30:21,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 19:30:21,215 INFO L93 Difference]: Finished difference Result 14659 states and 22993 transitions. [2024-11-18 19:30:21,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 19:30:21,216 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 1 states have call successors, (86), 1 states have call predecessors, (86), 1 states have return successors, (86), 1 states have call predecessors, (86), 1 states have call successors, (86) Word has length 537 [2024-11-18 19:30:21,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 19:30:21,256 INFO L225 Difference]: With dead ends: 14659 [2024-11-18 19:30:21,256 INFO L226 Difference]: Without dead ends: 7151 [2024-11-18 19:30:21,282 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 [2024-11-18 19:30:21,282 INFO L432 NwaCegarLoop]: 416 mSDtfsCounter, 0 mSDsluCounter, 413 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 829 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 19:30:21,283 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 829 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 19:30:21,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7151 states. [2024-11-18 19:30:22,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7151 to 7151. [2024-11-18 19:30:22,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7151 states, 5426 states have (on average 1.4570586067084408) internal successors, (7906), 5494 states have internal predecessors, (7906), 1616 states have call successors, (1616), 108 states have call predecessors, (1616), 108 states have return successors, (1616), 1548 states have call predecessors, (1616), 1616 states have call successors, (1616) [2024-11-18 19:30:22,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7151 states to 7151 states and 11138 transitions. [2024-11-18 19:30:22,345 INFO L78 Accepts]: Start accepts. Automaton has 7151 states and 11138 transitions. Word has length 537 [2024-11-18 19:30:22,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 19:30:22,346 INFO L471 AbstractCegarLoop]: Abstraction has 7151 states and 11138 transitions. [2024-11-18 19:30:22,347 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 1 states have call successors, (86), 1 states have call predecessors, (86), 1 states have return successors, (86), 1 states have call predecessors, (86), 1 states have call successors, (86) [2024-11-18 19:30:22,347 INFO L276 IsEmpty]: Start isEmpty. Operand 7151 states and 11138 transitions. [2024-11-18 19:30:22,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 538 [2024-11-18 19:30:22,361 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 19:30:22,361 INFO L215 NwaCegarLoop]: trace histogram [86, 86, 86, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 19:30:22,361 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-18 19:30:22,362 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 19:30:22,362 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 19:30:22,362 INFO L85 PathProgramCache]: Analyzing trace with hash -107044358, now seen corresponding path program 1 times [2024-11-18 19:30:22,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 19:30:22,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1967371457] [2024-11-18 19:30:22,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 19:30:22,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 19:30:22,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 19:30:22,597 INFO L134 CoverageAnalysis]: Checked inductivity of 14620 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14620 trivial. 0 not checked. [2024-11-18 19:30:22,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 19:30:22,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1967371457] [2024-11-18 19:30:22,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1967371457] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 19:30:22,598 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 19:30:22,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 19:30:22,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436809411] [2024-11-18 19:30:22,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 19:30:22,600 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 19:30:22,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 19:30:22,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 19:30:22,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 19:30:22,601 INFO L87 Difference]: Start difference. First operand 7151 states and 11138 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 1 states have call successors, (86), 1 states have call predecessors, (86), 1 states have return successors, (86), 1 states have call predecessors, (86), 1 states have call successors, (86) [2024-11-18 19:30:23,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 19:30:23,226 INFO L93 Difference]: Finished difference Result 13088 states and 20458 transitions. [2024-11-18 19:30:23,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 19:30:23,227 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 1 states have call successors, (86), 1 states have call predecessors, (86), 1 states have return successors, (86), 1 states have call predecessors, (86), 1 states have call successors, (86) Word has length 537 [2024-11-18 19:30:23,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 19:30:23,281 INFO L225 Difference]: With dead ends: 13088 [2024-11-18 19:30:23,281 INFO L226 Difference]: Without dead ends: 5940 [2024-11-18 19:30:23,310 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 [2024-11-18 19:30:23,312 INFO L432 NwaCegarLoop]: 414 mSDtfsCounter, 0 mSDsluCounter, 406 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 820 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 19:30:23,312 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 820 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 19:30:23,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5940 states. [2024-11-18 19:30:23,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5940 to 5940. [2024-11-18 19:30:23,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5940 states, 4495 states have (on average 1.471635150166852) internal successors, (6615), 4528 states have internal predecessors, (6615), 1336 states have call successors, (1336), 108 states have call predecessors, (1336), 108 states have return successors, (1336), 1303 states have call predecessors, (1336), 1336 states have call successors, (1336) [2024-11-18 19:30:24,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5940 states to 5940 states and 9287 transitions. [2024-11-18 19:30:24,030 INFO L78 Accepts]: Start accepts. Automaton has 5940 states and 9287 transitions. Word has length 537 [2024-11-18 19:30:24,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 19:30:24,031 INFO L471 AbstractCegarLoop]: Abstraction has 5940 states and 9287 transitions. [2024-11-18 19:30:24,031 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 1 states have call successors, (86), 1 states have call predecessors, (86), 1 states have return successors, (86), 1 states have call predecessors, (86), 1 states have call successors, (86) [2024-11-18 19:30:24,032 INFO L276 IsEmpty]: Start isEmpty. Operand 5940 states and 9287 transitions. [2024-11-18 19:30:24,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 540 [2024-11-18 19:30:24,040 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 19:30:24,040 INFO L215 NwaCegarLoop]: trace histogram [86, 86, 86, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 19:30:24,040 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-18 19:30:24,041 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 19:30:24,041 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 19:30:24,041 INFO L85 PathProgramCache]: Analyzing trace with hash -1149452403, now seen corresponding path program 1 times [2024-11-18 19:30:24,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 19:30:24,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456729896] [2024-11-18 19:30:24,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 19:30:24,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 19:30:24,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 19:30:25,337 INFO L134 CoverageAnalysis]: Checked inductivity of 14620 backedges. 342 proven. 162 refuted. 0 times theorem prover too weak. 14116 trivial. 0 not checked. [2024-11-18 19:30:25,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 19:30:25,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [456729896] [2024-11-18 19:30:25,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [456729896] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 19:30:25,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [661518649] [2024-11-18 19:30:25,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 19:30:25,339 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 19:30:25,340 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 19:30:25,341 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) [2024-11-18 19:30:25,343 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-18 19:30:25,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 19:30:25,712 INFO L255 TraceCheckSpWp]: Trace formula consists of 1193 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-18 19:30:25,728 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 19:30:27,244 INFO L134 CoverageAnalysis]: Checked inductivity of 14620 backedges. 7761 proven. 162 refuted. 0 times theorem prover too weak. 6697 trivial. 0 not checked. [2024-11-18 19:30:27,244 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 19:30:28,733 INFO L134 CoverageAnalysis]: Checked inductivity of 14620 backedges. 342 proven. 165 refuted. 0 times theorem prover too weak. 14113 trivial. 0 not checked. [2024-11-18 19:30:28,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [661518649] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 19:30:28,734 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 19:30:28,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 10] total 26 [2024-11-18 19:30:28,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959384487] [2024-11-18 19:30:28,734 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 19:30:28,736 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-18 19:30:28,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 19:30:28,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-18 19:30:28,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=486, Unknown=0, NotChecked=0, Total=650 [2024-11-18 19:30:28,739 INFO L87 Difference]: Start difference. First operand 5940 states and 9287 transitions. Second operand has 26 states, 24 states have (on average 12.583333333333334) internal successors, (302), 26 states have internal predecessors, (302), 11 states have call successors, (258), 4 states have call predecessors, (258), 9 states have return successors, (258), 10 states have call predecessors, (258), 11 states have call successors, (258) [2024-11-18 19:30:38,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 19:30:38,507 INFO L93 Difference]: Finished difference Result 43952 states and 67694 transitions. [2024-11-18 19:30:38,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2024-11-18 19:30:38,508 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 24 states have (on average 12.583333333333334) internal successors, (302), 26 states have internal predecessors, (302), 11 states have call successors, (258), 4 states have call predecessors, (258), 9 states have return successors, (258), 10 states have call predecessors, (258), 11 states have call successors, (258) Word has length 539 [2024-11-18 19:30:38,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 19:30:38,694 INFO L225 Difference]: With dead ends: 43952 [2024-11-18 19:30:38,695 INFO L226 Difference]: Without dead ends: 38028 [2024-11-18 19:30:38,734 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1134 GetRequests, 1072 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1075 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1057, Invalid=2975, Unknown=0, NotChecked=0, Total=4032 [2024-11-18 19:30:38,735 INFO L432 NwaCegarLoop]: 577 mSDtfsCounter, 2881 mSDsluCounter, 5955 mSDsCounter, 0 mSdLazyCounter, 5369 mSolverCounterSat, 1411 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3051 SdHoareTripleChecker+Valid, 6532 SdHoareTripleChecker+Invalid, 6780 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1411 IncrementalHoareTripleChecker+Valid, 5369 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2024-11-18 19:30:38,735 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3051 Valid, 6532 Invalid, 6780 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1411 Valid, 5369 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2024-11-18 19:30:38,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38028 states. [2024-11-18 19:30:43,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38028 to 28974. [2024-11-18 19:30:43,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28974 states, 20761 states have (on average 1.4024854294109146) internal successors, (29117), 20970 states have internal predecessors, (29117), 7544 states have call successors, (7544), 668 states have call predecessors, (7544), 668 states have return successors, (7544), 7335 states have call predecessors, (7544), 7544 states have call successors, (7544) [2024-11-18 19:30:43,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28974 states to 28974 states and 44205 transitions. [2024-11-18 19:30:43,491 INFO L78 Accepts]: Start accepts. Automaton has 28974 states and 44205 transitions. Word has length 539 [2024-11-18 19:30:43,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 19:30:43,492 INFO L471 AbstractCegarLoop]: Abstraction has 28974 states and 44205 transitions. [2024-11-18 19:30:43,492 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 24 states have (on average 12.583333333333334) internal successors, (302), 26 states have internal predecessors, (302), 11 states have call successors, (258), 4 states have call predecessors, (258), 9 states have return successors, (258), 10 states have call predecessors, (258), 11 states have call successors, (258) [2024-11-18 19:30:43,493 INFO L276 IsEmpty]: Start isEmpty. Operand 28974 states and 44205 transitions. [2024-11-18 19:30:43,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 540 [2024-11-18 19:30:43,513 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 19:30:43,513 INFO L215 NwaCegarLoop]: trace histogram [86, 86, 86, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 19:30:43,534 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-18 19:30:43,717 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-18 19:30:43,719 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 19:30:43,720 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 19:30:43,720 INFO L85 PathProgramCache]: Analyzing trace with hash 773775631, now seen corresponding path program 1 times [2024-11-18 19:30:43,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 19:30:43,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881393668] [2024-11-18 19:30:43,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 19:30:43,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 19:30:44,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-18 19:30:44,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1020080546] [2024-11-18 19:30:44,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 19:30:44,178 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 19:30:44,179 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 19:30:44,181 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) [2024-11-18 19:30:44,182 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-18 19:30:44,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 19:30:44,508 INFO L255 TraceCheckSpWp]: Trace formula consists of 1193 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-18 19:30:44,518 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 19:30:46,232 INFO L134 CoverageAnalysis]: Checked inductivity of 14620 backedges. 1233 proven. 9 refuted. 0 times theorem prover too weak. 13378 trivial. 0 not checked. [2024-11-18 19:30:46,232 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 19:30:46,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 19:30:46,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881393668] [2024-11-18 19:30:46,429 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-18 19:30:46,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1020080546] [2024-11-18 19:30:46,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1020080546] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 19:30:46,429 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-18 19:30:46,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2024-11-18 19:30:46,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328977290] [2024-11-18 19:30:46,430 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-18 19:30:46,431 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 19:30:46,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 19:30:46,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 19:30:46,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=34, Unknown=1, NotChecked=0, Total=56 [2024-11-18 19:30:46,432 INFO L87 Difference]: Start difference. First operand 28974 states and 44205 transitions. Second operand has 6 states, 6 states have (on average 19.666666666666668) internal successors, (118), 5 states have internal predecessors, (118), 2 states have call successors, (86), 2 states have call predecessors, (86), 3 states have return successors, (86), 2 states have call predecessors, (86), 2 states have call successors, (86) [2024-11-18 19:30:52,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 19:30:52,938 INFO L93 Difference]: Finished difference Result 87370 states and 133039 transitions. [2024-11-18 19:30:52,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 19:30:52,939 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 19.666666666666668) internal successors, (118), 5 states have internal predecessors, (118), 2 states have call successors, (86), 2 states have call predecessors, (86), 3 states have return successors, (86), 2 states have call predecessors, (86), 2 states have call successors, (86) Word has length 539 [2024-11-18 19:30:52,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 19:30:53,299 INFO L225 Difference]: With dead ends: 87370 [2024-11-18 19:30:53,300 INFO L226 Difference]: Without dead ends: 58412 [2024-11-18 19:30:53,405 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 613 GetRequests, 604 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=64, Unknown=1, NotChecked=0, Total=110 [2024-11-18 19:30:53,406 INFO L432 NwaCegarLoop]: 319 mSDtfsCounter, 424 mSDsluCounter, 854 mSDsCounter, 0 mSdLazyCounter, 486 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 506 SdHoareTripleChecker+Valid, 1173 SdHoareTripleChecker+Invalid, 498 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 486 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-18 19:30:53,406 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [506 Valid, 1173 Invalid, 498 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 486 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-18 19:30:53,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58412 states. [2024-11-18 19:31:01,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58412 to 57386. [2024-11-18 19:31:01,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57386 states, 40961 states have (on average 1.3921779253436195) internal successors, (57025), 41378 states have internal predecessors, (57025), 15080 states have call successors, (15080), 1344 states have call predecessors, (15080), 1344 states have return successors, (15080), 14663 states have call predecessors, (15080), 15080 states have call successors, (15080) [2024-11-18 19:31:01,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57386 states to 57386 states and 87185 transitions. [2024-11-18 19:31:01,777 INFO L78 Accepts]: Start accepts. Automaton has 57386 states and 87185 transitions. Word has length 539 [2024-11-18 19:31:01,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 19:31:01,778 INFO L471 AbstractCegarLoop]: Abstraction has 57386 states and 87185 transitions. [2024-11-18 19:31:01,778 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.666666666666668) internal successors, (118), 5 states have internal predecessors, (118), 2 states have call successors, (86), 2 states have call predecessors, (86), 3 states have return successors, (86), 2 states have call predecessors, (86), 2 states have call successors, (86) [2024-11-18 19:31:01,779 INFO L276 IsEmpty]: Start isEmpty. Operand 57386 states and 87185 transitions. [2024-11-18 19:31:01,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 541 [2024-11-18 19:31:01,816 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 19:31:01,816 INFO L215 NwaCegarLoop]: trace histogram [86, 86, 86, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 19:31:01,836 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-18 19:31:02,020 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 19:31:02,022 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 19:31:02,022 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 19:31:02,022 INFO L85 PathProgramCache]: Analyzing trace with hash -1649098360, now seen corresponding path program 1 times [2024-11-18 19:31:02,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 19:31:02,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096439539] [2024-11-18 19:31:02,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 19:31:02,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 19:31:02,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-18 19:31:02,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1836858201] [2024-11-18 19:31:02,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 19:31:02,639 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 19:31:02,639 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 19:31:02,641 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 19:31:02,642 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-18 19:31:03,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-18 19:31:03,017 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-18 19:31:03,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-18 19:31:03,574 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-18 19:31:03,574 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-18 19:31:03,576 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-18 19:31:03,591 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0