./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-100_file-69.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-100_file-69.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 7f7f9de4935e98a5cc03247cc1638e041ed42f1ff608f0c98afb88091964fc6c --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-18 19:13:43,732 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-18 19:13:43,851 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-18 19:13:43,860 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-18 19:13:43,864 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-18 19:13:43,921 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-18 19:13:43,925 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-18 19:13:43,926 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-18 19:13:43,927 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-18 19:13:43,927 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-18 19:13:43,928 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-18 19:13:43,928 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-18 19:13:43,929 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-18 19:13:43,929 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-18 19:13:43,930 INFO L153 SettingsManager]: * Use SBE=true [2024-11-18 19:13:43,930 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-18 19:13:43,930 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-18 19:13:43,931 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-18 19:13:43,931 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-18 19:13:43,931 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-18 19:13:43,932 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-18 19:13:43,932 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-18 19:13:43,933 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-18 19:13:43,933 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-18 19:13:43,933 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-18 19:13:43,934 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-18 19:13:43,934 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-18 19:13:43,934 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-18 19:13:43,935 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-18 19:13:43,935 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-18 19:13:43,935 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-18 19:13:43,936 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-18 19:13:43,936 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 19:13:43,936 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-18 19:13:43,936 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-18 19:13:43,937 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-18 19:13:43,937 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-18 19:13:43,937 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-18 19:13:43,948 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-18 19:13:43,949 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-18 19:13:43,949 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-18 19:13:43,949 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-18 19:13:43,950 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7f7f9de4935e98a5cc03247cc1638e041ed42f1ff608f0c98afb88091964fc6c [2024-11-18 19:13:44,226 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-18 19:13:44,254 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-18 19:13:44,257 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-18 19:13:44,258 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-18 19:13:44,259 INFO L274 PluginConnector]: CDTParser initialized [2024-11-18 19:13:44,260 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-100_file-69.i [2024-11-18 19:13:46,311 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-18 19:13:46,719 INFO L384 CDTParser]: Found 1 translation units. [2024-11-18 19:13:46,723 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-100_file-69.i [2024-11-18 19:13:46,746 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fe4a19507/31ba3744ac854f45852794d64c59abc9/FLAG0f5b4ac76 [2024-11-18 19:13:46,790 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fe4a19507/31ba3744ac854f45852794d64c59abc9 [2024-11-18 19:13:46,793 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-18 19:13:46,795 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-18 19:13:46,796 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-18 19:13:46,796 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-18 19:13:46,803 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-18 19:13:46,804 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 07:13:46" (1/1) ... [2024-11-18 19:13:46,805 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33b15b07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:13:46, skipping insertion in model container [2024-11-18 19:13:46,805 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 07:13:46" (1/1) ... [2024-11-18 19:13:46,847 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-18 19:13:47,105 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-100_file-69.i[916,929] [2024-11-18 19:13:47,259 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 19:13:47,274 INFO L200 MainTranslator]: Completed pre-run [2024-11-18 19:13:47,288 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-100_file-69.i[916,929] [2024-11-18 19:13:47,363 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 19:13:47,392 INFO L204 MainTranslator]: Completed translation [2024-11-18 19:13:47,393 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:13:47 WrapperNode [2024-11-18 19:13:47,393 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-18 19:13:47,395 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-18 19:13:47,396 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-18 19:13:47,396 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-18 19:13:47,405 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:13:47" (1/1) ... [2024-11-18 19:13:47,463 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:13:47" (1/1) ... [2024-11-18 19:13:47,594 INFO L138 Inliner]: procedures = 26, calls = 85, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 396 [2024-11-18 19:13:47,595 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-18 19:13:47,596 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-18 19:13:47,599 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-18 19:13:47,599 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-18 19:13:47,617 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:13:47" (1/1) ... [2024-11-18 19:13:47,618 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:13:47" (1/1) ... [2024-11-18 19:13:47,631 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:13:47" (1/1) ... [2024-11-18 19:13:47,696 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 19:13:47,700 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:13:47" (1/1) ... [2024-11-18 19:13:47,701 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:13:47" (1/1) ... [2024-11-18 19:13:47,738 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:13:47" (1/1) ... [2024-11-18 19:13:47,761 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:13:47" (1/1) ... [2024-11-18 19:13:47,772 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:13:47" (1/1) ... [2024-11-18 19:13:47,785 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:13:47" (1/1) ... [2024-11-18 19:13:47,809 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-18 19:13:47,813 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-18 19:13:47,814 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-18 19:13:47,814 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-18 19:13:47,815 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:13:47" (1/1) ... [2024-11-18 19:13:47,830 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 19:13:47,843 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 19:13:47,865 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 19:13:47,868 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 19:13:47,920 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-18 19:13:47,921 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-18 19:13:47,921 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-18 19:13:47,922 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-18 19:13:47,922 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-18 19:13:47,923 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-18 19:13:48,034 INFO L238 CfgBuilder]: Building ICFG [2024-11-18 19:13:48,036 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-18 19:13:48,948 INFO L? ?]: Removed 23 outVars from TransFormulas that were not future-live. [2024-11-18 19:13:48,948 INFO L287 CfgBuilder]: Performing block encoding [2024-11-18 19:13:48,971 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-18 19:13:48,971 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-18 19:13:48,972 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 07:13:48 BoogieIcfgContainer [2024-11-18 19:13:48,972 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-18 19:13:48,976 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-18 19:13:48,977 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-18 19:13:48,981 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-18 19:13:48,981 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 07:13:46" (1/3) ... [2024-11-18 19:13:48,983 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c2af38b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 07:13:48, skipping insertion in model container [2024-11-18 19:13:48,984 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:13:47" (2/3) ... [2024-11-18 19:13:48,984 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c2af38b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 07:13:48, skipping insertion in model container [2024-11-18 19:13:48,985 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 07:13:48" (3/3) ... [2024-11-18 19:13:48,986 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-100_file-69.i [2024-11-18 19:13:49,004 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-18 19:13:49,005 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-18 19:13:49,093 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-18 19:13:49,102 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;@27346981, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-18 19:13:49,103 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-18 19:13:49,110 INFO L276 IsEmpty]: Start isEmpty. Operand has 174 states, 99 states have (on average 1.404040404040404) internal successors, (139), 100 states have internal predecessors, (139), 72 states have call successors, (72), 1 states have call predecessors, (72), 1 states have return successors, (72), 72 states have call predecessors, (72), 72 states have call successors, (72) [2024-11-18 19:13:49,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 435 [2024-11-18 19:13:49,143 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 19:13:49,145 INFO L215 NwaCegarLoop]: trace histogram [72, 72, 72, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:13:49,146 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 19:13:49,151 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 19:13:49,152 INFO L85 PathProgramCache]: Analyzing trace with hash -1354451281, now seen corresponding path program 1 times [2024-11-18 19:13:49,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 19:13:49,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [243169547] [2024-11-18 19:13:49,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 19:13:49,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 19:13:49,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 19:13:49,895 INFO L134 CoverageAnalysis]: Checked inductivity of 10224 backedges. 0 proven. 142 refuted. 0 times theorem prover too weak. 10082 trivial. 0 not checked. [2024-11-18 19:13:49,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 19:13:49,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [243169547] [2024-11-18 19:13:49,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [243169547] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 19:13:49,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [702058896] [2024-11-18 19:13:49,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 19:13:49,900 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 19:13:49,900 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 19:13:49,902 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 19:13:49,904 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 19:13:50,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 19:13:50,220 INFO L255 TraceCheckSpWp]: Trace formula consists of 930 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-18 19:13:50,249 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 19:13:50,333 INFO L134 CoverageAnalysis]: Checked inductivity of 10224 backedges. 142 proven. 0 refuted. 0 times theorem prover too weak. 10082 trivial. 0 not checked. [2024-11-18 19:13:50,334 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 19:13:50,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [702058896] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 19:13:50,334 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 19:13:50,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-18 19:13:50,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899216913] [2024-11-18 19:13:50,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 19:13:50,344 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-18 19:13:50,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 19:13:50,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-18 19:13:50,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-18 19:13:50,381 INFO L87 Difference]: Start difference. First operand has 174 states, 99 states have (on average 1.404040404040404) internal successors, (139), 100 states have internal predecessors, (139), 72 states have call successors, (72), 1 states have call predecessors, (72), 1 states have return successors, (72), 72 states have call predecessors, (72), 72 states have call successors, (72) Second operand has 2 states, 2 states have (on average 39.5) internal successors, (79), 2 states have internal predecessors, (79), 2 states have call successors, (72), 2 states have call predecessors, (72), 1 states have return successors, (72), 1 states have call predecessors, (72), 2 states have call successors, (72) [2024-11-18 19:13:50,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 19:13:50,440 INFO L93 Difference]: Finished difference Result 341 states and 632 transitions. [2024-11-18 19:13:50,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-18 19:13:50,443 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 39.5) internal successors, (79), 2 states have internal predecessors, (79), 2 states have call successors, (72), 2 states have call predecessors, (72), 1 states have return successors, (72), 1 states have call predecessors, (72), 2 states have call successors, (72) Word has length 434 [2024-11-18 19:13:50,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 19:13:50,457 INFO L225 Difference]: With dead ends: 341 [2024-11-18 19:13:50,458 INFO L226 Difference]: Without dead ends: 170 [2024-11-18 19:13:50,468 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 435 GetRequests, 435 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 19:13:50,474 INFO L432 NwaCegarLoop]: 276 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, 276 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 19:13:50,476 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 276 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 19:13:50,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2024-11-18 19:13:50,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 170. [2024-11-18 19:13:50,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 96 states have (on average 1.375) internal successors, (132), 96 states have internal predecessors, (132), 72 states have call successors, (72), 1 states have call predecessors, (72), 1 states have return successors, (72), 72 states have call predecessors, (72), 72 states have call successors, (72) [2024-11-18 19:13:50,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 276 transitions. [2024-11-18 19:13:50,573 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 276 transitions. Word has length 434 [2024-11-18 19:13:50,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 19:13:50,574 INFO L471 AbstractCegarLoop]: Abstraction has 170 states and 276 transitions. [2024-11-18 19:13:50,575 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 39.5) internal successors, (79), 2 states have internal predecessors, (79), 2 states have call successors, (72), 2 states have call predecessors, (72), 1 states have return successors, (72), 1 states have call predecessors, (72), 2 states have call successors, (72) [2024-11-18 19:13:50,577 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 276 transitions. [2024-11-18 19:13:50,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 435 [2024-11-18 19:13:50,596 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 19:13:50,596 INFO L215 NwaCegarLoop]: trace histogram [72, 72, 72, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:13:50,624 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-18 19:13:50,797 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 19:13:50,799 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 19:13:50,800 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 19:13:50,800 INFO L85 PathProgramCache]: Analyzing trace with hash -265302225, now seen corresponding path program 1 times [2024-11-18 19:13:50,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 19:13:50,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [956712601] [2024-11-18 19:13:50,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 19:13:50,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 19:13:50,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 19:13:51,343 INFO L134 CoverageAnalysis]: Checked inductivity of 10224 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10224 trivial. 0 not checked. [2024-11-18 19:13:51,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 19:13:51,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [956712601] [2024-11-18 19:13:51,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [956712601] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 19:13:51,345 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 19:13:51,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 19:13:51,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365664026] [2024-11-18 19:13:51,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 19:13:51,350 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 19:13:51,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 19:13:51,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 19:13:51,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 19:13:51,352 INFO L87 Difference]: Start difference. First operand 170 states and 276 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 1 states have call successors, (72), 1 states have call predecessors, (72), 1 states have return successors, (72), 1 states have call predecessors, (72), 1 states have call successors, (72) [2024-11-18 19:13:51,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 19:13:51,468 INFO L93 Difference]: Finished difference Result 437 states and 711 transitions. [2024-11-18 19:13:51,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 19:13:51,469 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 1 states have call successors, (72), 1 states have call predecessors, (72), 1 states have return successors, (72), 1 states have call predecessors, (72), 1 states have call successors, (72) Word has length 434 [2024-11-18 19:13:51,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 19:13:51,483 INFO L225 Difference]: With dead ends: 437 [2024-11-18 19:13:51,483 INFO L226 Difference]: Without dead ends: 270 [2024-11-18 19:13:51,485 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 19:13:51,486 INFO L432 NwaCegarLoop]: 356 mSDtfsCounter, 153 mSDsluCounter, 265 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 621 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 19:13:51,486 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [153 Valid, 621 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 19:13:51,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2024-11-18 19:13:51,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 267. [2024-11-18 19:13:51,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 267 states, 163 states have (on average 1.4171779141104295) internal successors, (231), 164 states have internal predecessors, (231), 101 states have call successors, (101), 2 states have call predecessors, (101), 2 states have return successors, (101), 100 states have call predecessors, (101), 101 states have call successors, (101) [2024-11-18 19:13:51,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 433 transitions. [2024-11-18 19:13:51,543 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 433 transitions. Word has length 434 [2024-11-18 19:13:51,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 19:13:51,545 INFO L471 AbstractCegarLoop]: Abstraction has 267 states and 433 transitions. [2024-11-18 19:13:51,549 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 1 states have call successors, (72), 1 states have call predecessors, (72), 1 states have return successors, (72), 1 states have call predecessors, (72), 1 states have call successors, (72) [2024-11-18 19:13:51,550 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 433 transitions. [2024-11-18 19:13:51,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 435 [2024-11-18 19:13:51,559 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 19:13:51,560 INFO L215 NwaCegarLoop]: trace histogram [72, 72, 72, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:13:51,560 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-18 19:13:51,560 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 19:13:51,561 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 19:13:51,561 INFO L85 PathProgramCache]: Analyzing trace with hash 436297649, now seen corresponding path program 1 times [2024-11-18 19:13:51,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 19:13:51,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707056346] [2024-11-18 19:13:51,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 19:13:51,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 19:13:51,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 19:13:51,931 INFO L134 CoverageAnalysis]: Checked inductivity of 10224 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10224 trivial. 0 not checked. [2024-11-18 19:13:51,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 19:13:51,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707056346] [2024-11-18 19:13:51,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1707056346] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 19:13:51,933 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 19:13:51,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 19:13:51,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152716935] [2024-11-18 19:13:51,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 19:13:51,935 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 19:13:51,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 19:13:51,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 19:13:51,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 19:13:51,937 INFO L87 Difference]: Start difference. First operand 267 states and 433 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 1 states have call successors, (72), 1 states have call predecessors, (72), 1 states have return successors, (72), 1 states have call predecessors, (72), 1 states have call successors, (72) [2024-11-18 19:13:51,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 19:13:51,996 INFO L93 Difference]: Finished difference Result 538 states and 868 transitions. [2024-11-18 19:13:51,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 19:13:51,997 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 1 states have call successors, (72), 1 states have call predecessors, (72), 1 states have return successors, (72), 1 states have call predecessors, (72), 1 states have call successors, (72) Word has length 434 [2024-11-18 19:13:51,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 19:13:52,002 INFO L225 Difference]: With dead ends: 538 [2024-11-18 19:13:52,002 INFO L226 Difference]: Without dead ends: 274 [2024-11-18 19:13:52,004 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 19:13:52,005 INFO L432 NwaCegarLoop]: 287 mSDtfsCounter, 156 mSDsluCounter, 263 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 550 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 19:13:52,006 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [156 Valid, 550 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 19:13:52,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2024-11-18 19:13:52,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 186. [2024-11-18 19:13:52,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 111 states have (on average 1.3783783783783783) internal successors, (153), 111 states have internal predecessors, (153), 72 states have call successors, (72), 2 states have call predecessors, (72), 2 states have return successors, (72), 72 states have call predecessors, (72), 72 states have call successors, (72) [2024-11-18 19:13:52,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 297 transitions. [2024-11-18 19:13:52,042 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 297 transitions. Word has length 434 [2024-11-18 19:13:52,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 19:13:52,045 INFO L471 AbstractCegarLoop]: Abstraction has 186 states and 297 transitions. [2024-11-18 19:13:52,045 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 1 states have call successors, (72), 1 states have call predecessors, (72), 1 states have return successors, (72), 1 states have call predecessors, (72), 1 states have call successors, (72) [2024-11-18 19:13:52,045 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 297 transitions. [2024-11-18 19:13:52,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 435 [2024-11-18 19:13:52,053 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 19:13:52,054 INFO L215 NwaCegarLoop]: trace histogram [72, 72, 72, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:13:52,054 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-18 19:13:52,054 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 19:13:52,055 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 19:13:52,055 INFO L85 PathProgramCache]: Analyzing trace with hash 302284143, now seen corresponding path program 1 times [2024-11-18 19:13:52,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 19:13:52,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740886647] [2024-11-18 19:13:52,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 19:13:52,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 19:13:52,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 19:13:52,484 INFO L134 CoverageAnalysis]: Checked inductivity of 10224 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10224 trivial. 0 not checked. [2024-11-18 19:13:52,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 19:13:52,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740886647] [2024-11-18 19:13:52,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [740886647] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 19:13:52,487 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 19:13:52,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 19:13:52,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393275114] [2024-11-18 19:13:52,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 19:13:52,488 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 19:13:52,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 19:13:52,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 19:13:52,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 19:13:52,492 INFO L87 Difference]: Start difference. First operand 186 states and 297 transitions. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 1 states have call successors, (72), 1 states have call predecessors, (72), 1 states have return successors, (72), 1 states have call predecessors, (72), 1 states have call successors, (72) [2024-11-18 19:13:52,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 19:13:52,758 INFO L93 Difference]: Finished difference Result 485 states and 774 transitions. [2024-11-18 19:13:52,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 19:13:52,760 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 1 states have call successors, (72), 1 states have call predecessors, (72), 1 states have return successors, (72), 1 states have call predecessors, (72), 1 states have call successors, (72) Word has length 434 [2024-11-18 19:13:52,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 19:13:52,766 INFO L225 Difference]: With dead ends: 485 [2024-11-18 19:13:52,767 INFO L226 Difference]: Without dead ends: 302 [2024-11-18 19:13:52,769 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 19:13:52,770 INFO L432 NwaCegarLoop]: 266 mSDtfsCounter, 165 mSDsluCounter, 447 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 713 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 19:13:52,772 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [165 Valid, 713 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 19:13:52,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302 states. [2024-11-18 19:13:52,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302 to 299. [2024-11-18 19:13:52,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 299 states, 189 states have (on average 1.4074074074074074) internal successors, (266), 190 states have internal predecessors, (266), 105 states have call successors, (105), 4 states have call predecessors, (105), 4 states have return successors, (105), 104 states have call predecessors, (105), 105 states have call successors, (105) [2024-11-18 19:13:52,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 476 transitions. [2024-11-18 19:13:52,812 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 476 transitions. Word has length 434 [2024-11-18 19:13:52,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 19:13:52,814 INFO L471 AbstractCegarLoop]: Abstraction has 299 states and 476 transitions. [2024-11-18 19:13:52,814 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 1 states have call successors, (72), 1 states have call predecessors, (72), 1 states have return successors, (72), 1 states have call predecessors, (72), 1 states have call successors, (72) [2024-11-18 19:13:52,814 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 476 transitions. [2024-11-18 19:13:52,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 435 [2024-11-18 19:13:52,826 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 19:13:52,827 INFO L215 NwaCegarLoop]: trace histogram [72, 72, 72, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:13:52,827 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-18 19:13:52,828 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 19:13:52,829 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 19:13:52,831 INFO L85 PathProgramCache]: Analyzing trace with hash -207188947, now seen corresponding path program 1 times [2024-11-18 19:13:52,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 19:13:52,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018621] [2024-11-18 19:13:52,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 19:13:52,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 19:13:52,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 19:13:53,627 INFO L134 CoverageAnalysis]: Checked inductivity of 10224 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10224 trivial. 0 not checked. [2024-11-18 19:13:53,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 19:13:53,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018621] [2024-11-18 19:13:53,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1018621] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 19:13:53,630 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 19:13:53,630 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 19:13:53,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190370689] [2024-11-18 19:13:53,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 19:13:53,631 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 19:13:53,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 19:13:53,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 19:13:53,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-18 19:13:53,633 INFO L87 Difference]: Start difference. First operand 299 states and 476 transitions. Second operand has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 1 states have call successors, (72), 1 states have call predecessors, (72), 1 states have return successors, (72), 1 states have call predecessors, (72), 1 states have call successors, (72) [2024-11-18 19:13:54,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 19:13:54,215 INFO L93 Difference]: Finished difference Result 778 states and 1231 transitions. [2024-11-18 19:13:54,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 19:13:54,216 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 1 states have call successors, (72), 1 states have call predecessors, (72), 1 states have return successors, (72), 1 states have call predecessors, (72), 1 states have call successors, (72) Word has length 434 [2024-11-18 19:13:54,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 19:13:54,223 INFO L225 Difference]: With dead ends: 778 [2024-11-18 19:13:54,224 INFO L226 Difference]: Without dead ends: 482 [2024-11-18 19:13:54,225 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-18 19:13:54,226 INFO L432 NwaCegarLoop]: 356 mSDtfsCounter, 303 mSDsluCounter, 1009 mSDsCounter, 0 mSdLazyCounter, 319 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 303 SdHoareTripleChecker+Valid, 1365 SdHoareTripleChecker+Invalid, 322 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 319 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-18 19:13:54,227 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [303 Valid, 1365 Invalid, 322 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 319 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-18 19:13:54,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 482 states. [2024-11-18 19:13:54,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 482 to 395. [2024-11-18 19:13:54,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 395 states, 252 states have (on average 1.4126984126984128) internal successors, (356), 254 states have internal predecessors, (356), 136 states have call successors, (136), 6 states have call predecessors, (136), 6 states have return successors, (136), 134 states have call predecessors, (136), 136 states have call successors, (136) [2024-11-18 19:13:54,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 628 transitions. [2024-11-18 19:13:54,288 INFO L78 Accepts]: Start accepts. Automaton has 395 states and 628 transitions. Word has length 434 [2024-11-18 19:13:54,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 19:13:54,290 INFO L471 AbstractCegarLoop]: Abstraction has 395 states and 628 transitions. [2024-11-18 19:13:54,290 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 1 states have call successors, (72), 1 states have call predecessors, (72), 1 states have return successors, (72), 1 states have call predecessors, (72), 1 states have call successors, (72) [2024-11-18 19:13:54,291 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 628 transitions. [2024-11-18 19:13:54,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 435 [2024-11-18 19:13:54,297 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 19:13:54,297 INFO L215 NwaCegarLoop]: trace histogram [72, 72, 72, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:13:54,297 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-18 19:13:54,298 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 19:13:54,298 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 19:13:54,298 INFO L85 PathProgramCache]: Analyzing trace with hash 2093633643, now seen corresponding path program 1 times [2024-11-18 19:13:54,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 19:13:54,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094595980] [2024-11-18 19:13:54,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 19:13:54,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 19:13:54,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 19:13:54,816 INFO L134 CoverageAnalysis]: Checked inductivity of 10224 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10224 trivial. 0 not checked. [2024-11-18 19:13:54,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 19:13:54,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094595980] [2024-11-18 19:13:54,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2094595980] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 19:13:54,819 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 19:13:54,819 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 19:13:54,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268092680] [2024-11-18 19:13:54,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 19:13:54,821 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 19:13:54,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 19:13:54,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 19:13:54,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-18 19:13:54,824 INFO L87 Difference]: Start difference. First operand 395 states and 628 transitions. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 1 states have call successors, (72), 1 states have call predecessors, (72), 1 states have return successors, (72), 1 states have call predecessors, (72), 1 states have call successors, (72) [2024-11-18 19:13:55,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 19:13:55,310 INFO L93 Difference]: Finished difference Result 1346 states and 2126 transitions. [2024-11-18 19:13:55,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 19:13:55,311 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 1 states have call successors, (72), 1 states have call predecessors, (72), 1 states have return successors, (72), 1 states have call predecessors, (72), 1 states have call successors, (72) Word has length 434 [2024-11-18 19:13:55,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 19:13:55,319 INFO L225 Difference]: With dead ends: 1346 [2024-11-18 19:13:55,319 INFO L226 Difference]: Without dead ends: 954 [2024-11-18 19:13:55,321 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 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 19:13:55,322 INFO L432 NwaCegarLoop]: 310 mSDtfsCounter, 333 mSDsluCounter, 312 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 333 SdHoareTripleChecker+Valid, 622 SdHoareTripleChecker+Invalid, 196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-18 19:13:55,322 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [333 Valid, 622 Invalid, 196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-18 19:13:55,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 954 states. [2024-11-18 19:13:55,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 954 to 532. [2024-11-18 19:13:55,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 532 states, 356 states have (on average 1.4410112359550562) internal successors, (513), 359 states have internal predecessors, (513), 167 states have call successors, (167), 8 states have call predecessors, (167), 8 states have return successors, (167), 164 states have call predecessors, (167), 167 states have call successors, (167) [2024-11-18 19:13:55,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 532 states to 532 states and 847 transitions. [2024-11-18 19:13:55,399 INFO L78 Accepts]: Start accepts. Automaton has 532 states and 847 transitions. Word has length 434 [2024-11-18 19:13:55,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 19:13:55,400 INFO L471 AbstractCegarLoop]: Abstraction has 532 states and 847 transitions. [2024-11-18 19:13:55,400 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 1 states have call successors, (72), 1 states have call predecessors, (72), 1 states have return successors, (72), 1 states have call predecessors, (72), 1 states have call successors, (72) [2024-11-18 19:13:55,400 INFO L276 IsEmpty]: Start isEmpty. Operand 532 states and 847 transitions. [2024-11-18 19:13:55,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 435 [2024-11-18 19:13:55,407 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 19:13:55,408 INFO L215 NwaCegarLoop]: trace histogram [72, 72, 72, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:13:55,408 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-18 19:13:55,408 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 19:13:55,409 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 19:13:55,409 INFO L85 PathProgramCache]: Analyzing trace with hash -1982478935, now seen corresponding path program 1 times [2024-11-18 19:13:55,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 19:13:55,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954850972] [2024-11-18 19:13:55,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 19:13:55,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 19:13:55,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 19:13:55,746 INFO L134 CoverageAnalysis]: Checked inductivity of 10224 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10224 trivial. 0 not checked. [2024-11-18 19:13:55,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 19:13:55,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954850972] [2024-11-18 19:13:55,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [954850972] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 19:13:55,748 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 19:13:55,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 19:13:55,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532663099] [2024-11-18 19:13:55,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 19:13:55,749 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 19:13:55,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 19:13:55,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 19:13:55,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-18 19:13:55,750 INFO L87 Difference]: Start difference. First operand 532 states and 847 transitions. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (72), 1 states have call predecessors, (72), 1 states have return successors, (72), 2 states have call predecessors, (72), 2 states have call successors, (72) [2024-11-18 19:13:55,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 19:13:55,973 INFO L93 Difference]: Finished difference Result 1589 states and 2534 transitions. [2024-11-18 19:13:55,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 19:13:55,974 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (72), 1 states have call predecessors, (72), 1 states have return successors, (72), 2 states have call predecessors, (72), 2 states have call successors, (72) Word has length 434 [2024-11-18 19:13:55,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 19:13:55,982 INFO L225 Difference]: With dead ends: 1589 [2024-11-18 19:13:55,983 INFO L226 Difference]: Without dead ends: 1060 [2024-11-18 19:13:55,985 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 19:13:55,986 INFO L432 NwaCegarLoop]: 326 mSDtfsCounter, 297 mSDsluCounter, 255 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 297 SdHoareTripleChecker+Valid, 581 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 19:13:55,986 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [297 Valid, 581 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 19:13:55,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1060 states. [2024-11-18 19:13:56,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1060 to 1058. [2024-11-18 19:13:56,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1058 states, 707 states have (on average 1.4384724186704385) internal successors, (1017), 713 states have internal predecessors, (1017), 334 states have call successors, (334), 16 states have call predecessors, (334), 16 states have return successors, (334), 328 states have call predecessors, (334), 334 states have call successors, (334) [2024-11-18 19:13:56,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1058 states to 1058 states and 1685 transitions. [2024-11-18 19:13:56,113 INFO L78 Accepts]: Start accepts. Automaton has 1058 states and 1685 transitions. Word has length 434 [2024-11-18 19:13:56,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 19:13:56,114 INFO L471 AbstractCegarLoop]: Abstraction has 1058 states and 1685 transitions. [2024-11-18 19:13:56,115 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (72), 1 states have call predecessors, (72), 1 states have return successors, (72), 2 states have call predecessors, (72), 2 states have call successors, (72) [2024-11-18 19:13:56,115 INFO L276 IsEmpty]: Start isEmpty. Operand 1058 states and 1685 transitions. [2024-11-18 19:13:56,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 436 [2024-11-18 19:13:56,122 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 19:13:56,123 INFO L215 NwaCegarLoop]: trace histogram [72, 72, 72, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:13:56,123 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-18 19:13:56,123 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 19:13:56,124 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 19:13:56,124 INFO L85 PathProgramCache]: Analyzing trace with hash -852387582, now seen corresponding path program 1 times [2024-11-18 19:13:56,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 19:13:56,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2144045335] [2024-11-18 19:13:56,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 19:13:56,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 19:13:56,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 19:13:56,690 INFO L134 CoverageAnalysis]: Checked inductivity of 10224 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10224 trivial. 0 not checked. [2024-11-18 19:13:56,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 19:13:56,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2144045335] [2024-11-18 19:13:56,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2144045335] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 19:13:56,692 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 19:13:56,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 19:13:56,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678824271] [2024-11-18 19:13:56,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 19:13:56,693 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 19:13:56,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 19:13:56,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 19:13:56,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 19:13:56,695 INFO L87 Difference]: Start difference. First operand 1058 states and 1685 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 1 states have call successors, (72), 1 states have call predecessors, (72), 1 states have return successors, (72), 1 states have call predecessors, (72), 1 states have call successors, (72) [2024-11-18 19:13:57,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 19:13:57,028 INFO L93 Difference]: Finished difference Result 2343 states and 3724 transitions. [2024-11-18 19:13:57,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 19:13:57,030 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 1 states have call successors, (72), 1 states have call predecessors, (72), 1 states have return successors, (72), 1 states have call predecessors, (72), 1 states have call successors, (72) Word has length 435 [2024-11-18 19:13:57,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 19:13:57,043 INFO L225 Difference]: With dead ends: 2343 [2024-11-18 19:13:57,044 INFO L226 Difference]: Without dead ends: 1814 [2024-11-18 19:13:57,047 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 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 19:13:57,048 INFO L432 NwaCegarLoop]: 277 mSDtfsCounter, 168 mSDsluCounter, 248 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 525 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 19:13:57,049 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [168 Valid, 525 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 19:13:57,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1814 states. [2024-11-18 19:13:57,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1814 to 1784. [2024-11-18 19:13:57,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1784 states, 1157 states have (on average 1.4079515989628348) internal successors, (1629), 1171 states have internal predecessors, (1629), 594 states have call successors, (594), 32 states have call predecessors, (594), 32 states have return successors, (594), 580 states have call predecessors, (594), 594 states have call successors, (594) [2024-11-18 19:13:57,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1784 states to 1784 states and 2817 transitions. [2024-11-18 19:13:57,340 INFO L78 Accepts]: Start accepts. Automaton has 1784 states and 2817 transitions. Word has length 435 [2024-11-18 19:13:57,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 19:13:57,341 INFO L471 AbstractCegarLoop]: Abstraction has 1784 states and 2817 transitions. [2024-11-18 19:13:57,341 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 1 states have call successors, (72), 1 states have call predecessors, (72), 1 states have return successors, (72), 1 states have call predecessors, (72), 1 states have call successors, (72) [2024-11-18 19:13:57,341 INFO L276 IsEmpty]: Start isEmpty. Operand 1784 states and 2817 transitions. [2024-11-18 19:13:57,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 436 [2024-11-18 19:13:57,345 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 19:13:57,345 INFO L215 NwaCegarLoop]: trace histogram [72, 72, 72, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:13:57,345 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-18 19:13:57,345 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 19:13:57,346 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 19:13:57,346 INFO L85 PathProgramCache]: Analyzing trace with hash -977902215, now seen corresponding path program 1 times [2024-11-18 19:13:57,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 19:13:57,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710620937] [2024-11-18 19:13:57,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 19:13:57,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 19:13:57,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 19:13:57,868 INFO L134 CoverageAnalysis]: Checked inductivity of 10224 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10224 trivial. 0 not checked. [2024-11-18 19:13:57,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 19:13:57,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710620937] [2024-11-18 19:13:57,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [710620937] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 19:13:57,869 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 19:13:57,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 19:13:57,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910249374] [2024-11-18 19:13:57,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 19:13:57,871 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 19:13:57,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 19:13:57,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 19:13:57,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-18 19:13:57,872 INFO L87 Difference]: Start difference. First operand 1784 states and 2817 transitions. Second operand has 6 states, 6 states have (on average 13.0) internal successors, (78), 6 states have internal predecessors, (78), 1 states have call successors, (72), 1 states have call predecessors, (72), 1 states have return successors, (72), 1 states have call predecessors, (72), 1 states have call successors, (72) [2024-11-18 19:13:58,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 19:13:58,996 INFO L93 Difference]: Finished difference Result 5364 states and 8470 transitions. [2024-11-18 19:13:58,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 19:13:58,997 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.0) internal successors, (78), 6 states have internal predecessors, (78), 1 states have call successors, (72), 1 states have call predecessors, (72), 1 states have return successors, (72), 1 states have call predecessors, (72), 1 states have call successors, (72) Word has length 435 [2024-11-18 19:13:58,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 19:13:59,028 INFO L225 Difference]: With dead ends: 5364 [2024-11-18 19:13:59,029 INFO L226 Difference]: Without dead ends: 3583 [2024-11-18 19:13:59,041 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-18 19:13:59,042 INFO L432 NwaCegarLoop]: 294 mSDtfsCounter, 315 mSDsluCounter, 778 mSDsCounter, 0 mSdLazyCounter, 518 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 315 SdHoareTripleChecker+Valid, 1072 SdHoareTripleChecker+Invalid, 520 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 518 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-18 19:13:59,043 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [315 Valid, 1072 Invalid, 520 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 518 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-18 19:13:59,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3583 states. [2024-11-18 19:13:59,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3583 to 3567. [2024-11-18 19:13:59,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3567 states, 2314 states have (on average 1.4079515989628348) internal successors, (3258), 2342 states have internal predecessors, (3258), 1188 states have call successors, (1188), 64 states have call predecessors, (1188), 64 states have return successors, (1188), 1160 states have call predecessors, (1188), 1188 states have call successors, (1188) [2024-11-18 19:13:59,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3567 states to 3567 states and 5634 transitions. [2024-11-18 19:13:59,702 INFO L78 Accepts]: Start accepts. Automaton has 3567 states and 5634 transitions. Word has length 435 [2024-11-18 19:13:59,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 19:13:59,704 INFO L471 AbstractCegarLoop]: Abstraction has 3567 states and 5634 transitions. [2024-11-18 19:13:59,704 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.0) internal successors, (78), 6 states have internal predecessors, (78), 1 states have call successors, (72), 1 states have call predecessors, (72), 1 states have return successors, (72), 1 states have call predecessors, (72), 1 states have call successors, (72) [2024-11-18 19:13:59,704 INFO L276 IsEmpty]: Start isEmpty. Operand 3567 states and 5634 transitions. [2024-11-18 19:13:59,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 437 [2024-11-18 19:13:59,708 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 19:13:59,708 INFO L215 NwaCegarLoop]: trace histogram [72, 72, 72, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:13:59,708 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-18 19:13:59,709 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 19:13:59,709 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 19:13:59,709 INFO L85 PathProgramCache]: Analyzing trace with hash 1848122822, now seen corresponding path program 1 times [2024-11-18 19:13:59,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 19:13:59,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839576596] [2024-11-18 19:13:59,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 19:13:59,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 19:13:59,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 19:14:01,294 INFO L134 CoverageAnalysis]: Checked inductivity of 10224 backedges. 156 proven. 57 refuted. 0 times theorem prover too weak. 10011 trivial. 0 not checked. [2024-11-18 19:14:01,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 19:14:01,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [839576596] [2024-11-18 19:14:01,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [839576596] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 19:14:01,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1177196611] [2024-11-18 19:14:01,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 19:14:01,296 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 19:14:01,296 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 19:14:01,298 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 19:14:01,300 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 19:14:01,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 19:14:01,665 INFO L255 TraceCheckSpWp]: Trace formula consists of 929 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-18 19:14:01,676 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 19:14:04,721 INFO L134 CoverageAnalysis]: Checked inductivity of 10224 backedges. 5502 proven. 324 refuted. 0 times theorem prover too weak. 4398 trivial. 0 not checked. [2024-11-18 19:14:04,721 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 19:14:08,879 INFO L134 CoverageAnalysis]: Checked inductivity of 10224 backedges. 297 proven. 333 refuted. 0 times theorem prover too weak. 9594 trivial. 0 not checked. [2024-11-18 19:14:08,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1177196611] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 19:14:08,879 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 19:14:08,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 17, 17] total 37 [2024-11-18 19:14:08,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828714733] [2024-11-18 19:14:08,880 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 19:14:08,881 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2024-11-18 19:14:08,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 19:14:08,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2024-11-18 19:14:08,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=252, Invalid=1080, Unknown=0, NotChecked=0, Total=1332 [2024-11-18 19:14:08,884 INFO L87 Difference]: Start difference. First operand 3567 states and 5634 transitions. Second operand has 37 states, 37 states have (on average 5.54054054054054) internal successors, (205), 37 states have internal predecessors, (205), 10 states have call successors, (183), 4 states have call predecessors, (183), 10 states have return successors, (184), 10 states have call predecessors, (184), 10 states have call successors, (184) [2024-11-18 19:14:33,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 19:14:33,734 INFO L93 Difference]: Finished difference Result 22059 states and 33645 transitions. [2024-11-18 19:14:33,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 215 states. [2024-11-18 19:14:33,735 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 5.54054054054054) internal successors, (205), 37 states have internal predecessors, (205), 10 states have call successors, (183), 4 states have call predecessors, (183), 10 states have return successors, (184), 10 states have call predecessors, (184), 10 states have call successors, (184) Word has length 436 [2024-11-18 19:14:33,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 19:14:33,895 INFO L225 Difference]: With dead ends: 22059 [2024-11-18 19:14:33,895 INFO L226 Difference]: Without dead ends: 18495 [2024-11-18 19:14:33,930 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1109 GetRequests, 878 SyntacticMatches, 0 SemanticMatches, 231 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21544 ImplicationChecksByTransitivity, 13.4s TimeCoverageRelationStatistics Valid=9309, Invalid=44747, Unknown=0, NotChecked=0, Total=54056 [2024-11-18 19:14:33,931 INFO L432 NwaCegarLoop]: 293 mSDtfsCounter, 3622 mSDsluCounter, 3112 mSDsCounter, 0 mSdLazyCounter, 5190 mSolverCounterSat, 2944 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3684 SdHoareTripleChecker+Valid, 3405 SdHoareTripleChecker+Invalid, 8134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2944 IncrementalHoareTripleChecker+Valid, 5190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.4s IncrementalHoareTripleChecker+Time [2024-11-18 19:14:33,932 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3684 Valid, 3405 Invalid, 8134 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2944 Valid, 5190 Invalid, 0 Unknown, 0 Unchecked, 8.4s Time] [2024-11-18 19:14:33,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18495 states. [2024-11-18 19:14:35,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18495 to 2464. [2024-11-18 19:14:35,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2464 states, 1835 states have (on average 1.4588555858310626) internal successors, (2677), 1835 states have internal predecessors, (2677), 576 states have call successors, (576), 52 states have call predecessors, (576), 52 states have return successors, (576), 576 states have call predecessors, (576), 576 states have call successors, (576) [2024-11-18 19:14:35,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2464 states to 2464 states and 3829 transitions. [2024-11-18 19:14:35,160 INFO L78 Accepts]: Start accepts. Automaton has 2464 states and 3829 transitions. Word has length 436 [2024-11-18 19:14:35,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 19:14:35,161 INFO L471 AbstractCegarLoop]: Abstraction has 2464 states and 3829 transitions. [2024-11-18 19:14:35,162 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 5.54054054054054) internal successors, (205), 37 states have internal predecessors, (205), 10 states have call successors, (183), 4 states have call predecessors, (183), 10 states have return successors, (184), 10 states have call predecessors, (184), 10 states have call successors, (184) [2024-11-18 19:14:35,162 INFO L276 IsEmpty]: Start isEmpty. Operand 2464 states and 3829 transitions. [2024-11-18 19:14:35,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 437 [2024-11-18 19:14:35,165 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 19:14:35,165 INFO L215 NwaCegarLoop]: trace histogram [72, 72, 72, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:14:35,186 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-18 19:14:35,370 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,SelfDestructingSolverStorable9 [2024-11-18 19:14:35,371 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 19:14:35,372 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 19:14:35,372 INFO L85 PathProgramCache]: Analyzing trace with hash 6927428, now seen corresponding path program 1 times [2024-11-18 19:14:35,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 19:14:35,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71957221] [2024-11-18 19:14:35,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 19:14:35,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 19:14:35,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 19:14:36,154 INFO L134 CoverageAnalysis]: Checked inductivity of 10224 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10224 trivial. 0 not checked. [2024-11-18 19:14:36,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 19:14:36,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [71957221] [2024-11-18 19:14:36,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [71957221] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 19:14:36,155 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 19:14:36,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-18 19:14:36,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506432942] [2024-11-18 19:14:36,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 19:14:36,157 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-18 19:14:36,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 19:14:36,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-18 19:14:36,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-18 19:14:36,159 INFO L87 Difference]: Start difference. First operand 2464 states and 3829 transitions. Second operand has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 9 states have internal predecessors, (79), 1 states have call successors, (72), 1 states have call predecessors, (72), 1 states have return successors, (72), 1 states have call predecessors, (72), 1 states have call successors, (72) [2024-11-18 19:14:39,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 19:14:39,034 INFO L93 Difference]: Finished difference Result 6541 states and 10146 transitions. [2024-11-18 19:14:39,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-18 19:14:39,036 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 9 states have internal predecessors, (79), 1 states have call successors, (72), 1 states have call predecessors, (72), 1 states have return successors, (72), 1 states have call predecessors, (72), 1 states have call successors, (72) Word has length 436 [2024-11-18 19:14:39,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 19:14:39,059 INFO L225 Difference]: With dead ends: 6541 [2024-11-18 19:14:39,059 INFO L226 Difference]: Without dead ends: 5343 [2024-11-18 19:14:39,065 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2024-11-18 19:14:39,066 INFO L432 NwaCegarLoop]: 346 mSDtfsCounter, 565 mSDsluCounter, 1362 mSDsCounter, 0 mSdLazyCounter, 1039 mSolverCounterSat, 201 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 565 SdHoareTripleChecker+Valid, 1708 SdHoareTripleChecker+Invalid, 1240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 201 IncrementalHoareTripleChecker+Valid, 1039 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-18 19:14:39,066 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [565 Valid, 1708 Invalid, 1240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [201 Valid, 1039 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-18 19:14:39,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5343 states. [2024-11-18 19:14:39,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5343 to 3669. [2024-11-18 19:14:39,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3669 states, 2728 states have (on average 1.471041055718475) internal successors, (4013), 2728 states have internal predecessors, (4013), 864 states have call successors, (864), 76 states have call predecessors, (864), 76 states have return successors, (864), 864 states have call predecessors, (864), 864 states have call successors, (864) [2024-11-18 19:14:39,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3669 states to 3669 states and 5741 transitions. [2024-11-18 19:14:39,990 INFO L78 Accepts]: Start accepts. Automaton has 3669 states and 5741 transitions. Word has length 436 [2024-11-18 19:14:39,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 19:14:39,991 INFO L471 AbstractCegarLoop]: Abstraction has 3669 states and 5741 transitions. [2024-11-18 19:14:39,992 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 9 states have internal predecessors, (79), 1 states have call successors, (72), 1 states have call predecessors, (72), 1 states have return successors, (72), 1 states have call predecessors, (72), 1 states have call successors, (72) [2024-11-18 19:14:39,992 INFO L276 IsEmpty]: Start isEmpty. Operand 3669 states and 5741 transitions. [2024-11-18 19:14:39,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 437 [2024-11-18 19:14:39,997 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 19:14:39,998 INFO L215 NwaCegarLoop]: trace histogram [72, 72, 72, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:14:39,998 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-18 19:14:39,998 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 19:14:39,998 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 19:14:39,999 INFO L85 PathProgramCache]: Analyzing trace with hash 584690355, now seen corresponding path program 1 times [2024-11-18 19:14:39,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 19:14:39,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735525327] [2024-11-18 19:14:39,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 19:14:40,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 19:14:40,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 19:14:40,391 INFO L134 CoverageAnalysis]: Checked inductivity of 10224 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10224 trivial. 0 not checked. [2024-11-18 19:14:40,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 19:14:40,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735525327] [2024-11-18 19:14:40,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1735525327] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 19:14:40,392 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 19:14:40,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 19:14:40,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247776215] [2024-11-18 19:14:40,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 19:14:40,393 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 19:14:40,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 19:14:40,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 19:14:40,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 19:14:40,394 INFO L87 Difference]: Start difference. First operand 3669 states and 5741 transitions. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 1 states have call successors, (72), 1 states have call predecessors, (72), 1 states have return successors, (72), 1 states have call predecessors, (72), 1 states have call successors, (72) [2024-11-18 19:14:43,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 19:14:43,109 INFO L93 Difference]: Finished difference Result 10561 states and 16512 transitions. [2024-11-18 19:14:43,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 19:14:43,110 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 1 states have call successors, (72), 1 states have call predecessors, (72), 1 states have return successors, (72), 1 states have call predecessors, (72), 1 states have call successors, (72) Word has length 436 [2024-11-18 19:14:43,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 19:14:43,146 INFO L225 Difference]: With dead ends: 10561 [2024-11-18 19:14:43,147 INFO L226 Difference]: Without dead ends: 6895 [2024-11-18 19:14:43,158 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 1 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 19:14:43,159 INFO L432 NwaCegarLoop]: 307 mSDtfsCounter, 435 mSDsluCounter, 377 mSDsCounter, 0 mSdLazyCounter, 213 mSolverCounterSat, 131 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 435 SdHoareTripleChecker+Valid, 684 SdHoareTripleChecker+Invalid, 344 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 131 IncrementalHoareTripleChecker+Valid, 213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-18 19:14:43,160 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [435 Valid, 684 Invalid, 344 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [131 Valid, 213 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-18 19:14:43,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6895 states. [2024-11-18 19:14:44,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6895 to 3741. [2024-11-18 19:14:44,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3741 states, 2800 states have (on average 1.4696428571428573) internal successors, (4115), 2800 states have internal predecessors, (4115), 864 states have call successors, (864), 76 states have call predecessors, (864), 76 states have return successors, (864), 864 states have call predecessors, (864), 864 states have call successors, (864) [2024-11-18 19:14:44,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3741 states to 3741 states and 5843 transitions. [2024-11-18 19:14:44,101 INFO L78 Accepts]: Start accepts. Automaton has 3741 states and 5843 transitions. Word has length 436 [2024-11-18 19:14:44,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 19:14:44,102 INFO L471 AbstractCegarLoop]: Abstraction has 3741 states and 5843 transitions. [2024-11-18 19:14:44,103 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 1 states have call successors, (72), 1 states have call predecessors, (72), 1 states have return successors, (72), 1 states have call predecessors, (72), 1 states have call successors, (72) [2024-11-18 19:14:44,103 INFO L276 IsEmpty]: Start isEmpty. Operand 3741 states and 5843 transitions. [2024-11-18 19:14:44,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 438 [2024-11-18 19:14:44,111 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 19:14:44,112 INFO L215 NwaCegarLoop]: trace histogram [72, 72, 72, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:14:44,112 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-18 19:14:44,112 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 19:14:44,113 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 19:14:44,113 INFO L85 PathProgramCache]: Analyzing trace with hash -974244125, now seen corresponding path program 1 times [2024-11-18 19:14:44,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 19:14:44,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541913606] [2024-11-18 19:14:44,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 19:14:44,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 19:14:44,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 19:14:46,015 INFO L134 CoverageAnalysis]: Checked inductivity of 10224 backedges. 402 proven. 414 refuted. 0 times theorem prover too weak. 9408 trivial. 0 not checked. [2024-11-18 19:14:46,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 19:14:46,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1541913606] [2024-11-18 19:14:46,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1541913606] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 19:14:46,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1025126437] [2024-11-18 19:14:46,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 19:14:46,017 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 19:14:46,017 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 19:14:46,019 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 19:14:46,020 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 19:14:46,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 19:14:46,250 INFO L255 TraceCheckSpWp]: Trace formula consists of 929 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-18 19:14:46,266 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 19:14:48,838 INFO L134 CoverageAnalysis]: Checked inductivity of 10224 backedges. 5679 proven. 414 refuted. 0 times theorem prover too weak. 4131 trivial. 0 not checked. [2024-11-18 19:14:48,839 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 19:14:52,968 INFO L134 CoverageAnalysis]: Checked inductivity of 10224 backedges. 402 proven. 432 refuted. 0 times theorem prover too weak. 9390 trivial. 0 not checked. [2024-11-18 19:14:52,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1025126437] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 19:14:52,969 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 19:14:52,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 17, 20] total 40 [2024-11-18 19:14:52,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564888107] [2024-11-18 19:14:52,970 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 19:14:52,971 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2024-11-18 19:14:52,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 19:14:52,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2024-11-18 19:14:52,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=317, Invalid=1243, Unknown=0, NotChecked=0, Total=1560 [2024-11-18 19:14:52,973 INFO L87 Difference]: Start difference. First operand 3741 states and 5843 transitions. Second operand has 40 states, 40 states have (on average 4.8) internal successors, (192), 40 states have internal predecessors, (192), 11 states have call successors, (150), 5 states have call predecessors, (150), 13 states have return successors, (151), 11 states have call predecessors, (151), 11 states have call successors, (151)