./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-1loop_file-63.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_loopvsstraightlinecode_100-1loop_file-63.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 032103455c965390b2cd90e1021eb4797074287a2ad4fda3336b307fb716d96d --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-18 22:25:04,005 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-18 22:25:04,045 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-18 22:25:04,048 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-18 22:25:04,048 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-18 22:25:04,064 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-18 22:25:04,065 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-18 22:25:04,065 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-18 22:25:04,066 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-18 22:25:04,066 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-18 22:25:04,066 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-18 22:25:04,067 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-18 22:25:04,067 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-18 22:25:04,067 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-18 22:25:04,068 INFO L153 SettingsManager]: * Use SBE=true [2024-11-18 22:25:04,068 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-18 22:25:04,068 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-18 22:25:04,069 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-18 22:25:04,069 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-18 22:25:04,069 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-18 22:25:04,069 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-18 22:25:04,070 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-18 22:25:04,070 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-18 22:25:04,070 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-18 22:25:04,071 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-18 22:25:04,071 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-18 22:25:04,071 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-18 22:25:04,071 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-18 22:25:04,072 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-18 22:25:04,072 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-18 22:25:04,072 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-18 22:25:04,072 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-18 22:25:04,073 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 22:25:04,073 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-18 22:25:04,073 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-18 22:25:04,074 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-18 22:25:04,074 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-18 22:25:04,074 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-18 22:25:04,074 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-18 22:25:04,075 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-18 22:25:04,075 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-18 22:25:04,075 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-18 22:25:04,076 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 032103455c965390b2cd90e1021eb4797074287a2ad4fda3336b307fb716d96d [2024-11-18 22:25:04,302 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-18 22:25:04,335 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-18 22:25:04,338 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-18 22:25:04,340 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-18 22:25:04,341 INFO L274 PluginConnector]: CDTParser initialized [2024-11-18 22:25:04,342 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-1loop_file-63.i [2024-11-18 22:25:05,940 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-18 22:25:06,110 INFO L384 CDTParser]: Found 1 translation units. [2024-11-18 22:25:06,111 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-1loop_file-63.i [2024-11-18 22:25:06,118 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/161b9d96c/e31e7feb301843c082a4ae892a920c39/FLAGa89563b73 [2024-11-18 22:25:06,511 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/161b9d96c/e31e7feb301843c082a4ae892a920c39 [2024-11-18 22:25:06,514 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-18 22:25:06,515 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-18 22:25:06,516 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-18 22:25:06,516 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-18 22:25:06,521 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-18 22:25:06,521 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 10:25:06" (1/1) ... [2024-11-18 22:25:06,522 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ffae3f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:25:06, skipping insertion in model container [2024-11-18 22:25:06,522 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 10:25:06" (1/1) ... [2024-11-18 22:25:06,546 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-18 22:25:06,670 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-1loop_file-63.i[916,929] [2024-11-18 22:25:06,752 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 22:25:06,761 INFO L200 MainTranslator]: Completed pre-run [2024-11-18 22:25:06,770 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-1loop_file-63.i[916,929] [2024-11-18 22:25:06,834 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 22:25:06,874 INFO L204 MainTranslator]: Completed translation [2024-11-18 22:25:06,876 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:25:06 WrapperNode [2024-11-18 22:25:06,879 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-18 22:25:06,881 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-18 22:25:06,881 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-18 22:25:06,881 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-18 22:25:06,887 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:25:06" (1/1) ... [2024-11-18 22:25:06,896 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:25:06" (1/1) ... [2024-11-18 22:25:06,981 INFO L138 Inliner]: procedures = 26, calls = 33, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 217 [2024-11-18 22:25:06,982 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-18 22:25:06,982 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-18 22:25:06,982 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-18 22:25:07,006 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-18 22:25:07,016 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:25:06" (1/1) ... [2024-11-18 22:25:07,017 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:25:06" (1/1) ... [2024-11-18 22:25:07,024 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:25:06" (1/1) ... [2024-11-18 22:25:07,076 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 22:25:07,076 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:25:06" (1/1) ... [2024-11-18 22:25:07,077 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:25:06" (1/1) ... [2024-11-18 22:25:07,106 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:25:06" (1/1) ... [2024-11-18 22:25:07,115 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:25:06" (1/1) ... [2024-11-18 22:25:07,126 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:25:06" (1/1) ... [2024-11-18 22:25:07,134 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:25:06" (1/1) ... [2024-11-18 22:25:07,142 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-18 22:25:07,143 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-18 22:25:07,143 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-18 22:25:07,144 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-18 22:25:07,144 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:25:06" (1/1) ... [2024-11-18 22:25:07,148 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 22:25:07,157 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 22:25:07,172 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 22:25:07,179 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 22:25:07,238 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-18 22:25:07,238 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-18 22:25:07,239 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-18 22:25:07,239 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-18 22:25:07,239 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-18 22:25:07,239 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-18 22:25:07,323 INFO L238 CfgBuilder]: Building ICFG [2024-11-18 22:25:07,325 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-18 22:25:07,776 INFO L? ?]: Removed 28 outVars from TransFormulas that were not future-live. [2024-11-18 22:25:07,777 INFO L287 CfgBuilder]: Performing block encoding [2024-11-18 22:25:07,793 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-18 22:25:07,795 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-18 22:25:07,799 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 10:25:07 BoogieIcfgContainer [2024-11-18 22:25:07,800 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-18 22:25:07,806 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-18 22:25:07,811 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-18 22:25:07,818 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-18 22:25:07,823 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 10:25:06" (1/3) ... [2024-11-18 22:25:07,823 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53aad93a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 10:25:07, skipping insertion in model container [2024-11-18 22:25:07,824 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:25:06" (2/3) ... [2024-11-18 22:25:07,824 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53aad93a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 10:25:07, skipping insertion in model container [2024-11-18 22:25:07,824 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 10:25:07" (3/3) ... [2024-11-18 22:25:07,825 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_loopvsstraightlinecode_100-1loop_file-63.i [2024-11-18 22:25:07,850 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-18 22:25:07,850 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-18 22:25:07,915 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-18 22:25:07,921 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;@43289f4b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-18 22:25:07,922 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-18 22:25:07,926 INFO L276 IsEmpty]: Start isEmpty. Operand has 90 states, 67 states have (on average 1.4776119402985075) internal successors, (99), 68 states have internal predecessors, (99), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2024-11-18 22:25:07,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2024-11-18 22:25:07,938 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 22:25:07,939 INFO L215 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:25:07,939 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 22:25:07,944 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 22:25:07,945 INFO L85 PathProgramCache]: Analyzing trace with hash -1384575058, now seen corresponding path program 1 times [2024-11-18 22:25:07,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 22:25:07,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993647619] [2024-11-18 22:25:07,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 22:25:07,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 22:25:08,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 22:25:08,331 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 722 trivial. 0 not checked. [2024-11-18 22:25:08,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 22:25:08,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993647619] [2024-11-18 22:25:08,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [993647619] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 22:25:08,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1040256621] [2024-11-18 22:25:08,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 22:25:08,333 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 22:25:08,334 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 22:25:08,340 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 22:25:08,341 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 22:25:08,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 22:25:08,472 INFO L255 TraceCheckSpWp]: Trace formula consists of 365 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-18 22:25:08,481 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 22:25:08,514 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 722 trivial. 0 not checked. [2024-11-18 22:25:08,516 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 22:25:08,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1040256621] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 22:25:08,516 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 22:25:08,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-18 22:25:08,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772644467] [2024-11-18 22:25:08,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 22:25:08,524 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-18 22:25:08,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 22:25:08,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-18 22:25:08,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-18 22:25:08,547 INFO L87 Difference]: Start difference. First operand has 90 states, 67 states have (on average 1.4776119402985075) internal successors, (99), 68 states have internal predecessors, (99), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) Second operand has 2 states, 2 states have (on average 24.0) internal successors, (48), 2 states have internal predecessors, (48), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 2 states have call successors, (20) [2024-11-18 22:25:08,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 22:25:08,574 INFO L93 Difference]: Finished difference Result 175 states and 293 transitions. [2024-11-18 22:25:08,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-18 22:25:08,576 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 24.0) internal successors, (48), 2 states have internal predecessors, (48), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 2 states have call successors, (20) Word has length 143 [2024-11-18 22:25:08,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 22:25:08,582 INFO L225 Difference]: With dead ends: 175 [2024-11-18 22:25:08,582 INFO L226 Difference]: Without dead ends: 84 [2024-11-18 22:25:08,585 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 144 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 22:25:08,589 INFO L432 NwaCegarLoop]: 130 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, 130 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 22:25:08,590 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 22:25:08,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2024-11-18 22:25:08,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2024-11-18 22:25:08,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 62 states have (on average 1.3870967741935485) internal successors, (86), 62 states have internal predecessors, (86), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2024-11-18 22:25:08,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 126 transitions. [2024-11-18 22:25:08,628 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 126 transitions. Word has length 143 [2024-11-18 22:25:08,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 22:25:08,628 INFO L471 AbstractCegarLoop]: Abstraction has 84 states and 126 transitions. [2024-11-18 22:25:08,628 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 24.0) internal successors, (48), 2 states have internal predecessors, (48), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 2 states have call successors, (20) [2024-11-18 22:25:08,628 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 126 transitions. [2024-11-18 22:25:08,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2024-11-18 22:25:08,633 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 22:25:08,633 INFO L215 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:25:08,652 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-18 22:25:08,840 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 22:25:08,841 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 22:25:08,841 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 22:25:08,841 INFO L85 PathProgramCache]: Analyzing trace with hash -1680373646, now seen corresponding path program 1 times [2024-11-18 22:25:08,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 22:25:08,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597567678] [2024-11-18 22:25:08,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 22:25:08,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 22:25:08,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 22:25:09,026 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-18 22:25:09,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 22:25:09,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597567678] [2024-11-18 22:25:09,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1597567678] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 22:25:09,027 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 22:25:09,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 22:25:09,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523603742] [2024-11-18 22:25:09,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 22:25:09,028 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 22:25:09,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 22:25:09,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 22:25:09,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 22:25:09,032 INFO L87 Difference]: Start difference. First operand 84 states and 126 transitions. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-18 22:25:09,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 22:25:09,061 INFO L93 Difference]: Finished difference Result 166 states and 251 transitions. [2024-11-18 22:25:09,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 22:25:09,062 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 143 [2024-11-18 22:25:09,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 22:25:09,068 INFO L225 Difference]: With dead ends: 166 [2024-11-18 22:25:09,068 INFO L226 Difference]: Without dead ends: 85 [2024-11-18 22:25:09,069 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 22:25:09,070 INFO L432 NwaCegarLoop]: 125 mSDtfsCounter, 0 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 244 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 22:25:09,070 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 244 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 22:25:09,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2024-11-18 22:25:09,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2024-11-18 22:25:09,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 63 states have (on average 1.380952380952381) internal successors, (87), 63 states have internal predecessors, (87), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2024-11-18 22:25:09,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 127 transitions. [2024-11-18 22:25:09,079 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 127 transitions. Word has length 143 [2024-11-18 22:25:09,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 22:25:09,081 INFO L471 AbstractCegarLoop]: Abstraction has 85 states and 127 transitions. [2024-11-18 22:25:09,081 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-18 22:25:09,081 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 127 transitions. [2024-11-18 22:25:09,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2024-11-18 22:25:09,083 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 22:25:09,083 INFO L215 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:25:09,084 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-18 22:25:09,084 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 22:25:09,084 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 22:25:09,084 INFO L85 PathProgramCache]: Analyzing trace with hash -849713454, now seen corresponding path program 1 times [2024-11-18 22:25:09,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 22:25:09,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026488751] [2024-11-18 22:25:09,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 22:25:09,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 22:25:09,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 22:25:09,527 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-18 22:25:09,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 22:25:09,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026488751] [2024-11-18 22:25:09,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1026488751] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 22:25:09,527 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 22:25:09,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 22:25:09,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795108437] [2024-11-18 22:25:09,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 22:25:09,529 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 22:25:09,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 22:25:09,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 22:25:09,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 22:25:09,532 INFO L87 Difference]: Start difference. First operand 85 states and 127 transitions. Second operand has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-18 22:25:09,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 22:25:09,679 INFO L93 Difference]: Finished difference Result 250 states and 376 transitions. [2024-11-18 22:25:09,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 22:25:09,680 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 143 [2024-11-18 22:25:09,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 22:25:09,681 INFO L225 Difference]: With dead ends: 250 [2024-11-18 22:25:09,681 INFO L226 Difference]: Without dead ends: 168 [2024-11-18 22:25:09,682 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-18 22:25:09,683 INFO L432 NwaCegarLoop]: 123 mSDtfsCounter, 93 mSDsluCounter, 230 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 353 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 22:25:09,686 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 353 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 22:25:09,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2024-11-18 22:25:09,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 132. [2024-11-18 22:25:09,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 89 states have (on average 1.3370786516853932) internal successors, (119), 89 states have internal predecessors, (119), 40 states have call successors, (40), 2 states have call predecessors, (40), 2 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2024-11-18 22:25:09,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 199 transitions. [2024-11-18 22:25:09,706 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 199 transitions. Word has length 143 [2024-11-18 22:25:09,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 22:25:09,706 INFO L471 AbstractCegarLoop]: Abstraction has 132 states and 199 transitions. [2024-11-18 22:25:09,707 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-18 22:25:09,707 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 199 transitions. [2024-11-18 22:25:09,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2024-11-18 22:25:09,710 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 22:25:09,711 INFO L215 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:25:09,711 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-18 22:25:09,711 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 22:25:09,711 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 22:25:09,711 INFO L85 PathProgramCache]: Analyzing trace with hash -983726960, now seen corresponding path program 1 times [2024-11-18 22:25:09,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 22:25:09,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827998865] [2024-11-18 22:25:09,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 22:25:09,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 22:25:09,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 22:25:10,117 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-18 22:25:10,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 22:25:10,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1827998865] [2024-11-18 22:25:10,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1827998865] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 22:25:10,118 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 22:25:10,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 22:25:10,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926733236] [2024-11-18 22:25:10,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 22:25:10,119 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 22:25:10,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 22:25:10,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 22:25:10,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-18 22:25:10,120 INFO L87 Difference]: Start difference. First operand 132 states and 199 transitions. Second operand has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-18 22:25:10,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 22:25:10,253 INFO L93 Difference]: Finished difference Result 317 states and 471 transitions. [2024-11-18 22:25:10,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 22:25:10,254 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 143 [2024-11-18 22:25:10,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 22:25:10,255 INFO L225 Difference]: With dead ends: 317 [2024-11-18 22:25:10,256 INFO L226 Difference]: Without dead ends: 235 [2024-11-18 22:25:10,256 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 22:25:10,257 INFO L432 NwaCegarLoop]: 139 mSDtfsCounter, 191 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 191 SdHoareTripleChecker+Valid, 292 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 22:25:10,261 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [191 Valid, 292 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 22:25:10,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2024-11-18 22:25:10,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 186. [2024-11-18 22:25:10,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 134 states have (on average 1.3582089552238805) internal successors, (182), 135 states have internal predecessors, (182), 48 states have call successors, (48), 3 states have call predecessors, (48), 3 states have return successors, (48), 47 states have call predecessors, (48), 48 states have call successors, (48) [2024-11-18 22:25:10,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 278 transitions. [2024-11-18 22:25:10,283 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 278 transitions. Word has length 143 [2024-11-18 22:25:10,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 22:25:10,284 INFO L471 AbstractCegarLoop]: Abstraction has 186 states and 278 transitions. [2024-11-18 22:25:10,284 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-18 22:25:10,284 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 278 transitions. [2024-11-18 22:25:10,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2024-11-18 22:25:10,285 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 22:25:10,286 INFO L215 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:25:10,286 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-18 22:25:10,286 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 22:25:10,286 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 22:25:10,286 INFO L85 PathProgramCache]: Analyzing trace with hash -1348004724, now seen corresponding path program 1 times [2024-11-18 22:25:10,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 22:25:10,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869271036] [2024-11-18 22:25:10,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 22:25:10,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 22:25:10,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 22:25:18,504 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-18 22:25:18,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 22:25:18,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869271036] [2024-11-18 22:25:18,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1869271036] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 22:25:18,505 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 22:25:18,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-11-18 22:25:18,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461024034] [2024-11-18 22:25:18,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 22:25:18,506 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-18 22:25:18,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 22:25:18,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-18 22:25:18,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2024-11-18 22:25:18,507 INFO L87 Difference]: Start difference. First operand 186 states and 278 transitions. Second operand has 14 states, 14 states have (on average 3.2857142857142856) internal successors, (46), 14 states have internal predecessors, (46), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-18 22:25:20,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 22:25:20,350 INFO L93 Difference]: Finished difference Result 801 states and 1158 transitions. [2024-11-18 22:25:20,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-18 22:25:20,351 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.2857142857142856) internal successors, (46), 14 states have internal predecessors, (46), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 143 [2024-11-18 22:25:20,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 22:25:20,355 INFO L225 Difference]: With dead ends: 801 [2024-11-18 22:25:20,356 INFO L226 Difference]: Without dead ends: 666 [2024-11-18 22:25:20,359 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=199, Invalid=557, Unknown=0, NotChecked=0, Total=756 [2024-11-18 22:25:20,361 INFO L432 NwaCegarLoop]: 110 mSDtfsCounter, 876 mSDsluCounter, 690 mSDsCounter, 0 mSdLazyCounter, 615 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 876 SdHoareTripleChecker+Valid, 800 SdHoareTripleChecker+Invalid, 681 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 615 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-18 22:25:20,361 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [876 Valid, 800 Invalid, 681 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 615 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-18 22:25:20,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 666 states. [2024-11-18 22:25:20,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 666 to 229. [2024-11-18 22:25:20,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229 states, 177 states have (on average 1.384180790960452) internal successors, (245), 178 states have internal predecessors, (245), 48 states have call successors, (48), 3 states have call predecessors, (48), 3 states have return successors, (48), 47 states have call predecessors, (48), 48 states have call successors, (48) [2024-11-18 22:25:20,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 341 transitions. [2024-11-18 22:25:20,383 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 341 transitions. Word has length 143 [2024-11-18 22:25:20,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 22:25:20,383 INFO L471 AbstractCegarLoop]: Abstraction has 229 states and 341 transitions. [2024-11-18 22:25:20,383 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.2857142857142856) internal successors, (46), 14 states have internal predecessors, (46), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-18 22:25:20,384 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 341 transitions. [2024-11-18 22:25:20,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2024-11-18 22:25:20,385 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 22:25:20,385 INFO L215 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:25:20,385 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-18 22:25:20,385 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 22:25:20,385 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 22:25:20,386 INFO L85 PathProgramCache]: Analyzing trace with hash 2137615946, now seen corresponding path program 1 times [2024-11-18 22:25:20,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 22:25:20,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650537283] [2024-11-18 22:25:20,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 22:25:20,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 22:25:20,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 22:25:26,889 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-18 22:25:26,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 22:25:26,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650537283] [2024-11-18 22:25:26,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [650537283] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 22:25:26,890 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 22:25:26,890 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2024-11-18 22:25:26,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180220236] [2024-11-18 22:25:26,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 22:25:26,891 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-18 22:25:26,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 22:25:26,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-18 22:25:26,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2024-11-18 22:25:26,892 INFO L87 Difference]: Start difference. First operand 229 states and 341 transitions. Second operand has 15 states, 15 states have (on average 3.066666666666667) internal successors, (46), 15 states have internal predecessors, (46), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-18 22:25:29,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 22:25:29,368 INFO L93 Difference]: Finished difference Result 886 states and 1293 transitions. [2024-11-18 22:25:29,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-18 22:25:29,369 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.066666666666667) internal successors, (46), 15 states have internal predecessors, (46), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 143 [2024-11-18 22:25:29,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 22:25:29,371 INFO L225 Difference]: With dead ends: 886 [2024-11-18 22:25:29,371 INFO L226 Difference]: Without dead ends: 708 [2024-11-18 22:25:29,372 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=197, Invalid=615, Unknown=0, NotChecked=0, Total=812 [2024-11-18 22:25:29,373 INFO L432 NwaCegarLoop]: 121 mSDtfsCounter, 682 mSDsluCounter, 795 mSDsCounter, 0 mSdLazyCounter, 985 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 682 SdHoareTripleChecker+Valid, 916 SdHoareTripleChecker+Invalid, 1077 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 985 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-18 22:25:29,373 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [682 Valid, 916 Invalid, 1077 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 985 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-18 22:25:29,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 708 states. [2024-11-18 22:25:29,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 708 to 294. [2024-11-18 22:25:29,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 294 states, 242 states have (on average 1.4173553719008265) internal successors, (343), 243 states have internal predecessors, (343), 48 states have call successors, (48), 3 states have call predecessors, (48), 3 states have return successors, (48), 47 states have call predecessors, (48), 48 states have call successors, (48) [2024-11-18 22:25:29,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 439 transitions. [2024-11-18 22:25:29,388 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 439 transitions. Word has length 143 [2024-11-18 22:25:29,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 22:25:29,388 INFO L471 AbstractCegarLoop]: Abstraction has 294 states and 439 transitions. [2024-11-18 22:25:29,388 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.066666666666667) internal successors, (46), 15 states have internal predecessors, (46), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-18 22:25:29,388 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 439 transitions. [2024-11-18 22:25:29,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2024-11-18 22:25:29,389 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 22:25:29,390 INFO L215 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:25:29,390 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-18 22:25:29,390 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 22:25:29,390 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 22:25:29,390 INFO L85 PathProgramCache]: Analyzing trace with hash -561025134, now seen corresponding path program 1 times [2024-11-18 22:25:29,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 22:25:29,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184592329] [2024-11-18 22:25:29,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 22:25:29,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 22:25:29,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 22:25:29,586 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-18 22:25:29,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 22:25:29,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184592329] [2024-11-18 22:25:29,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1184592329] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 22:25:29,587 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 22:25:29,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 22:25:29,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841617702] [2024-11-18 22:25:29,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 22:25:29,587 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 22:25:29,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 22:25:29,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 22:25:29,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-18 22:25:29,588 INFO L87 Difference]: Start difference. First operand 294 states and 439 transitions. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-18 22:25:29,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 22:25:29,710 INFO L93 Difference]: Finished difference Result 556 states and 825 transitions. [2024-11-18 22:25:29,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 22:25:29,710 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 143 [2024-11-18 22:25:29,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 22:25:29,713 INFO L225 Difference]: With dead ends: 556 [2024-11-18 22:25:29,713 INFO L226 Difference]: Without dead ends: 331 [2024-11-18 22:25:29,713 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-18 22:25:29,714 INFO L432 NwaCegarLoop]: 165 mSDtfsCounter, 142 mSDsluCounter, 292 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 457 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 22:25:29,715 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 457 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 22:25:29,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2024-11-18 22:25:29,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 293. [2024-11-18 22:25:29,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 293 states, 241 states have (on average 1.4066390041493777) internal successors, (339), 242 states have internal predecessors, (339), 48 states have call successors, (48), 3 states have call predecessors, (48), 3 states have return successors, (48), 47 states have call predecessors, (48), 48 states have call successors, (48) [2024-11-18 22:25:29,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 435 transitions. [2024-11-18 22:25:29,729 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 435 transitions. Word has length 143 [2024-11-18 22:25:29,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 22:25:29,731 INFO L471 AbstractCegarLoop]: Abstraction has 293 states and 435 transitions. [2024-11-18 22:25:29,731 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-18 22:25:29,731 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 435 transitions. [2024-11-18 22:25:29,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2024-11-18 22:25:29,732 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 22:25:29,733 INFO L215 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:25:29,734 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-18 22:25:29,734 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 22:25:29,735 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 22:25:29,735 INFO L85 PathProgramCache]: Analyzing trace with hash -1370371760, now seen corresponding path program 1 times [2024-11-18 22:25:29,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 22:25:29,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272445665] [2024-11-18 22:25:29,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 22:25:29,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 22:25:29,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 22:25:33,927 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-18 22:25:33,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 22:25:33,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272445665] [2024-11-18 22:25:33,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1272445665] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 22:25:33,929 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 22:25:33,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-11-18 22:25:33,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590142369] [2024-11-18 22:25:33,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 22:25:33,929 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-18 22:25:33,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 22:25:33,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-18 22:25:33,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2024-11-18 22:25:33,931 INFO L87 Difference]: Start difference. First operand 293 states and 435 transitions. Second operand has 13 states, 13 states have (on average 3.5384615384615383) internal successors, (46), 13 states have internal predecessors, (46), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-18 22:25:35,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 22:25:35,225 INFO L93 Difference]: Finished difference Result 942 states and 1375 transitions. [2024-11-18 22:25:35,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-18 22:25:35,226 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.5384615384615383) internal successors, (46), 13 states have internal predecessors, (46), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 143 [2024-11-18 22:25:35,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 22:25:35,229 INFO L225 Difference]: With dead ends: 942 [2024-11-18 22:25:35,229 INFO L226 Difference]: Without dead ends: 717 [2024-11-18 22:25:35,230 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=143, Invalid=277, Unknown=0, NotChecked=0, Total=420 [2024-11-18 22:25:35,230 INFO L432 NwaCegarLoop]: 124 mSDtfsCounter, 588 mSDsluCounter, 584 mSDsCounter, 0 mSdLazyCounter, 632 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 588 SdHoareTripleChecker+Valid, 708 SdHoareTripleChecker+Invalid, 735 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 632 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-18 22:25:35,231 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [588 Valid, 708 Invalid, 735 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 632 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-18 22:25:35,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 717 states. [2024-11-18 22:25:35,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 717 to 354. [2024-11-18 22:25:35,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 354 states, 302 states have (on average 1.413907284768212) internal successors, (427), 303 states have internal predecessors, (427), 48 states have call successors, (48), 3 states have call predecessors, (48), 3 states have return successors, (48), 47 states have call predecessors, (48), 48 states have call successors, (48) [2024-11-18 22:25:35,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 354 states to 354 states and 523 transitions. [2024-11-18 22:25:35,250 INFO L78 Accepts]: Start accepts. Automaton has 354 states and 523 transitions. Word has length 143 [2024-11-18 22:25:35,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 22:25:35,250 INFO L471 AbstractCegarLoop]: Abstraction has 354 states and 523 transitions. [2024-11-18 22:25:35,251 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.5384615384615383) internal successors, (46), 13 states have internal predecessors, (46), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-18 22:25:35,251 INFO L276 IsEmpty]: Start isEmpty. Operand 354 states and 523 transitions. [2024-11-18 22:25:35,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2024-11-18 22:25:35,252 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 22:25:35,252 INFO L215 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:25:35,252 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-18 22:25:35,252 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 22:25:35,253 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 22:25:35,253 INFO L85 PathProgramCache]: Analyzing trace with hash 1763716426, now seen corresponding path program 1 times [2024-11-18 22:25:35,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 22:25:35,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71157397] [2024-11-18 22:25:35,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 22:25:35,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 22:25:35,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 22:25:38,969 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-18 22:25:38,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 22:25:38,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [71157397] [2024-11-18 22:25:38,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [71157397] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 22:25:38,969 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 22:25:38,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-18 22:25:38,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182461157] [2024-11-18 22:25:38,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 22:25:38,970 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-18 22:25:38,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 22:25:38,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-18 22:25:38,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2024-11-18 22:25:38,971 INFO L87 Difference]: Start difference. First operand 354 states and 523 transitions. Second operand has 12 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 12 states have internal predecessors, (47), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-18 22:25:40,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 22:25:40,188 INFO L93 Difference]: Finished difference Result 1066 states and 1560 transitions. [2024-11-18 22:25:40,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-18 22:25:40,188 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 12 states have internal predecessors, (47), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 144 [2024-11-18 22:25:40,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 22:25:40,191 INFO L225 Difference]: With dead ends: 1066 [2024-11-18 22:25:40,191 INFO L226 Difference]: Without dead ends: 804 [2024-11-18 22:25:40,192 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=144, Invalid=362, Unknown=0, NotChecked=0, Total=506 [2024-11-18 22:25:40,193 INFO L432 NwaCegarLoop]: 101 mSDtfsCounter, 633 mSDsluCounter, 570 mSDsCounter, 0 mSdLazyCounter, 449 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 633 SdHoareTripleChecker+Valid, 671 SdHoareTripleChecker+Invalid, 531 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 449 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-18 22:25:40,193 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [633 Valid, 671 Invalid, 531 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 449 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-18 22:25:40,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 804 states. [2024-11-18 22:25:40,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 804 to 334. [2024-11-18 22:25:40,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 334 states, 282 states have (on average 1.4148936170212767) internal successors, (399), 283 states have internal predecessors, (399), 48 states have call successors, (48), 3 states have call predecessors, (48), 3 states have return successors, (48), 47 states have call predecessors, (48), 48 states have call successors, (48) [2024-11-18 22:25:40,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 334 states to 334 states and 495 transitions. [2024-11-18 22:25:40,209 INFO L78 Accepts]: Start accepts. Automaton has 334 states and 495 transitions. Word has length 144 [2024-11-18 22:25:40,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 22:25:40,210 INFO L471 AbstractCegarLoop]: Abstraction has 334 states and 495 transitions. [2024-11-18 22:25:40,210 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 12 states have internal predecessors, (47), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-18 22:25:40,210 INFO L276 IsEmpty]: Start isEmpty. Operand 334 states and 495 transitions. [2024-11-18 22:25:40,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2024-11-18 22:25:40,211 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 22:25:40,211 INFO L215 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:25:40,211 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-18 22:25:40,211 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 22:25:40,212 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 22:25:40,212 INFO L85 PathProgramCache]: Analyzing trace with hash -785454913, now seen corresponding path program 1 times [2024-11-18 22:25:40,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 22:25:40,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460368135] [2024-11-18 22:25:40,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 22:25:40,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 22:25:40,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 22:25:40,312 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-18 22:25:40,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 22:25:40,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1460368135] [2024-11-18 22:25:40,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1460368135] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 22:25:40,312 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 22:25:40,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 22:25:40,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100615226] [2024-11-18 22:25:40,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 22:25:40,313 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 22:25:40,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 22:25:40,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 22:25:40,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-18 22:25:40,314 INFO L87 Difference]: Start difference. First operand 334 states and 495 transitions. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-18 22:25:40,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 22:25:40,350 INFO L93 Difference]: Finished difference Result 747 states and 1100 transitions. [2024-11-18 22:25:40,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 22:25:40,351 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 144 [2024-11-18 22:25:40,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 22:25:40,353 INFO L225 Difference]: With dead ends: 747 [2024-11-18 22:25:40,353 INFO L226 Difference]: Without dead ends: 492 [2024-11-18 22:25:40,353 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 22:25:40,354 INFO L432 NwaCegarLoop]: 120 mSDtfsCounter, 64 mSDsluCounter, 221 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 341 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 22:25:40,354 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 341 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 22:25:40,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 492 states. [2024-11-18 22:25:40,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 492 to 488. [2024-11-18 22:25:40,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 488 states, 421 states have (on average 1.3966745843230404) internal successors, (588), 424 states have internal predecessors, (588), 60 states have call successors, (60), 6 states have call predecessors, (60), 6 states have return successors, (60), 57 states have call predecessors, (60), 60 states have call successors, (60) [2024-11-18 22:25:40,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 488 states to 488 states and 708 transitions. [2024-11-18 22:25:40,378 INFO L78 Accepts]: Start accepts. Automaton has 488 states and 708 transitions. Word has length 144 [2024-11-18 22:25:40,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 22:25:40,378 INFO L471 AbstractCegarLoop]: Abstraction has 488 states and 708 transitions. [2024-11-18 22:25:40,378 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-18 22:25:40,378 INFO L276 IsEmpty]: Start isEmpty. Operand 488 states and 708 transitions. [2024-11-18 22:25:40,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2024-11-18 22:25:40,381 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 22:25:40,381 INFO L215 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:25:40,381 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-18 22:25:40,381 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 22:25:40,382 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 22:25:40,382 INFO L85 PathProgramCache]: Analyzing trace with hash -1449621624, now seen corresponding path program 1 times [2024-11-18 22:25:40,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 22:25:40,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485338681] [2024-11-18 22:25:40,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 22:25:40,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 22:25:40,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 22:25:44,118 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-18 22:25:44,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 22:25:44,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485338681] [2024-11-18 22:25:44,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1485338681] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 22:25:44,119 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 22:25:44,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-18 22:25:44,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105868198] [2024-11-18 22:25:44,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 22:25:44,119 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-18 22:25:44,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 22:25:44,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-18 22:25:44,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-11-18 22:25:44,121 INFO L87 Difference]: Start difference. First operand 488 states and 708 transitions. Second operand has 10 states, 10 states have (on average 4.7) internal successors, (47), 10 states have internal predecessors, (47), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-18 22:25:45,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 22:25:45,312 INFO L93 Difference]: Finished difference Result 1398 states and 2007 transitions. [2024-11-18 22:25:45,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-18 22:25:45,316 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.7) internal successors, (47), 10 states have internal predecessors, (47), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 144 [2024-11-18 22:25:45,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 22:25:45,319 INFO L225 Difference]: With dead ends: 1398 [2024-11-18 22:25:45,320 INFO L226 Difference]: Without dead ends: 1017 [2024-11-18 22:25:45,321 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=101, Invalid=241, Unknown=0, NotChecked=0, Total=342 [2024-11-18 22:25:45,321 INFO L432 NwaCegarLoop]: 128 mSDtfsCounter, 450 mSDsluCounter, 567 mSDsCounter, 0 mSdLazyCounter, 619 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 450 SdHoareTripleChecker+Valid, 695 SdHoareTripleChecker+Invalid, 684 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 619 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-18 22:25:45,322 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [450 Valid, 695 Invalid, 684 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 619 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-18 22:25:45,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1017 states. [2024-11-18 22:25:45,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1017 to 453. [2024-11-18 22:25:45,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 453 states, 386 states have (on average 1.3963730569948187) internal successors, (539), 389 states have internal predecessors, (539), 60 states have call successors, (60), 6 states have call predecessors, (60), 6 states have return successors, (60), 57 states have call predecessors, (60), 60 states have call successors, (60) [2024-11-18 22:25:45,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 453 states to 453 states and 659 transitions. [2024-11-18 22:25:45,347 INFO L78 Accepts]: Start accepts. Automaton has 453 states and 659 transitions. Word has length 144 [2024-11-18 22:25:45,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 22:25:45,347 INFO L471 AbstractCegarLoop]: Abstraction has 453 states and 659 transitions. [2024-11-18 22:25:45,347 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.7) internal successors, (47), 10 states have internal predecessors, (47), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-18 22:25:45,347 INFO L276 IsEmpty]: Start isEmpty. Operand 453 states and 659 transitions. [2024-11-18 22:25:45,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2024-11-18 22:25:45,349 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 22:25:45,349 INFO L215 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:25:45,349 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-18 22:25:45,349 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 22:25:45,349 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 22:25:45,349 INFO L85 PathProgramCache]: Analyzing trace with hash 149079318, now seen corresponding path program 1 times [2024-11-18 22:25:45,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 22:25:45,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138362878] [2024-11-18 22:25:45,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 22:25:45,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 22:25:45,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 22:25:46,268 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-18 22:25:46,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 22:25:46,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138362878] [2024-11-18 22:25:46,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1138362878] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 22:25:46,269 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 22:25:46,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-18 22:25:46,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94170223] [2024-11-18 22:25:46,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 22:25:46,270 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-18 22:25:46,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 22:25:46,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-18 22:25:46,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-11-18 22:25:46,271 INFO L87 Difference]: Start difference. First operand 453 states and 659 transitions. Second operand has 10 states, 10 states have (on average 4.7) internal successors, (47), 10 states have internal predecessors, (47), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-18 22:25:47,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 22:25:47,161 INFO L93 Difference]: Finished difference Result 1414 states and 2021 transitions. [2024-11-18 22:25:47,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-18 22:25:47,161 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.7) internal successors, (47), 10 states have internal predecessors, (47), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 144 [2024-11-18 22:25:47,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 22:25:47,165 INFO L225 Difference]: With dead ends: 1414 [2024-11-18 22:25:47,165 INFO L226 Difference]: Without dead ends: 1013 [2024-11-18 22:25:47,166 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=136, Invalid=370, Unknown=0, NotChecked=0, Total=506 [2024-11-18 22:25:47,166 INFO L432 NwaCegarLoop]: 180 mSDtfsCounter, 390 mSDsluCounter, 949 mSDsCounter, 0 mSdLazyCounter, 519 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 390 SdHoareTripleChecker+Valid, 1129 SdHoareTripleChecker+Invalid, 606 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 519 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-18 22:25:47,167 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [390 Valid, 1129 Invalid, 606 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 519 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-18 22:25:47,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1013 states. [2024-11-18 22:25:47,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1013 to 815. [2024-11-18 22:25:47,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 815 states, 742 states have (on average 1.4258760107816713) internal successors, (1058), 747 states have internal predecessors, (1058), 64 states have call successors, (64), 8 states have call predecessors, (64), 8 states have return successors, (64), 59 states have call predecessors, (64), 64 states have call successors, (64) [2024-11-18 22:25:47,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 815 states to 815 states and 1186 transitions. [2024-11-18 22:25:47,195 INFO L78 Accepts]: Start accepts. Automaton has 815 states and 1186 transitions. Word has length 144 [2024-11-18 22:25:47,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 22:25:47,195 INFO L471 AbstractCegarLoop]: Abstraction has 815 states and 1186 transitions. [2024-11-18 22:25:47,195 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.7) internal successors, (47), 10 states have internal predecessors, (47), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-18 22:25:47,195 INFO L276 IsEmpty]: Start isEmpty. Operand 815 states and 1186 transitions. [2024-11-18 22:25:47,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2024-11-18 22:25:47,197 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 22:25:47,197 INFO L215 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:25:47,197 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-18 22:25:47,197 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 22:25:47,197 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 22:25:47,197 INFO L85 PathProgramCache]: Analyzing trace with hash 1381127770, now seen corresponding path program 1 times [2024-11-18 22:25:47,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 22:25:47,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928030838] [2024-11-18 22:25:47,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 22:25:47,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 22:25:47,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 22:25:47,403 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-18 22:25:47,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 22:25:47,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [928030838] [2024-11-18 22:25:47,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [928030838] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 22:25:47,404 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 22:25:47,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 22:25:47,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029155466] [2024-11-18 22:25:47,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 22:25:47,405 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 22:25:47,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 22:25:47,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 22:25:47,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-18 22:25:47,406 INFO L87 Difference]: Start difference. First operand 815 states and 1186 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-18 22:25:47,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 22:25:47,540 INFO L93 Difference]: Finished difference Result 1653 states and 2395 transitions. [2024-11-18 22:25:47,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 22:25:47,541 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 144 [2024-11-18 22:25:47,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 22:25:47,546 INFO L225 Difference]: With dead ends: 1653 [2024-11-18 22:25:47,546 INFO L226 Difference]: Without dead ends: 1217 [2024-11-18 22:25:47,547 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-18 22:25:47,548 INFO L432 NwaCegarLoop]: 153 mSDtfsCounter, 216 mSDsluCounter, 337 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 216 SdHoareTripleChecker+Valid, 490 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 22:25:47,549 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [216 Valid, 490 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 22:25:47,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1217 states. [2024-11-18 22:25:47,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1217 to 861. [2024-11-18 22:25:47,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 861 states, 788 states have (on average 1.4238578680203047) internal successors, (1122), 793 states have internal predecessors, (1122), 64 states have call successors, (64), 8 states have call predecessors, (64), 8 states have return successors, (64), 59 states have call predecessors, (64), 64 states have call successors, (64) [2024-11-18 22:25:47,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 861 states to 861 states and 1250 transitions. [2024-11-18 22:25:47,583 INFO L78 Accepts]: Start accepts. Automaton has 861 states and 1250 transitions. Word has length 144 [2024-11-18 22:25:47,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 22:25:47,584 INFO L471 AbstractCegarLoop]: Abstraction has 861 states and 1250 transitions. [2024-11-18 22:25:47,584 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-18 22:25:47,584 INFO L276 IsEmpty]: Start isEmpty. Operand 861 states and 1250 transitions. [2024-11-18 22:25:47,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2024-11-18 22:25:47,586 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 22:25:47,586 INFO L215 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:25:47,586 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-18 22:25:47,586 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 22:25:47,587 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 22:25:47,587 INFO L85 PathProgramCache]: Analyzing trace with hash -245867306, now seen corresponding path program 1 times [2024-11-18 22:25:47,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 22:25:47,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767742846] [2024-11-18 22:25:47,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 22:25:47,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 22:25:47,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 22:25:47,626 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-18 22:25:47,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 22:25:47,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767742846] [2024-11-18 22:25:47,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [767742846] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 22:25:47,627 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 22:25:47,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 22:25:47,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494465404] [2024-11-18 22:25:47,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 22:25:47,628 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 22:25:47,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 22:25:47,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 22:25:47,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 22:25:47,629 INFO L87 Difference]: Start difference. First operand 861 states and 1250 transitions. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-18 22:25:47,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 22:25:47,687 INFO L93 Difference]: Finished difference Result 1636 states and 2360 transitions. [2024-11-18 22:25:47,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 22:25:47,688 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 144 [2024-11-18 22:25:47,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 22:25:47,692 INFO L225 Difference]: With dead ends: 1636 [2024-11-18 22:25:47,692 INFO L226 Difference]: Without dead ends: 1068 [2024-11-18 22:25:47,693 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 22:25:47,693 INFO L432 NwaCegarLoop]: 131 mSDtfsCounter, 75 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 237 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 22:25:47,693 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 237 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 22:25:47,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1068 states. [2024-11-18 22:25:47,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1068 to 865. [2024-11-18 22:25:47,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 865 states, 785 states have (on average 1.4063694267515923) internal successors, (1104), 792 states have internal predecessors, (1104), 68 states have call successors, (68), 11 states have call predecessors, (68), 11 states have return successors, (68), 61 states have call predecessors, (68), 68 states have call successors, (68) [2024-11-18 22:25:47,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 865 states to 865 states and 1240 transitions. [2024-11-18 22:25:47,731 INFO L78 Accepts]: Start accepts. Automaton has 865 states and 1240 transitions. Word has length 144 [2024-11-18 22:25:47,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 22:25:47,732 INFO L471 AbstractCegarLoop]: Abstraction has 865 states and 1240 transitions. [2024-11-18 22:25:47,732 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-18 22:25:47,732 INFO L276 IsEmpty]: Start isEmpty. Operand 865 states and 1240 transitions. [2024-11-18 22:25:47,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2024-11-18 22:25:47,734 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 22:25:47,734 INFO L215 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:25:47,734 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-18 22:25:47,734 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 22:25:47,734 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 22:25:47,735 INFO L85 PathProgramCache]: Analyzing trace with hash 207503380, now seen corresponding path program 1 times [2024-11-18 22:25:47,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 22:25:47,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118551523] [2024-11-18 22:25:47,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 22:25:47,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 22:25:47,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 22:25:51,022 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-18 22:25:51,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 22:25:51,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118551523] [2024-11-18 22:25:51,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2118551523] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 22:25:51,023 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 22:25:51,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-11-18 22:25:51,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176661086] [2024-11-18 22:25:51,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 22:25:51,027 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-18 22:25:51,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 22:25:51,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-18 22:25:51,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-11-18 22:25:51,028 INFO L87 Difference]: Start difference. First operand 865 states and 1240 transitions. Second operand has 13 states, 13 states have (on average 3.6153846153846154) internal successors, (47), 13 states have internal predecessors, (47), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-18 22:25:52,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 22:25:52,866 INFO L93 Difference]: Finished difference Result 1430 states and 2005 transitions. [2024-11-18 22:25:52,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-18 22:25:52,870 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.6153846153846154) internal successors, (47), 13 states have internal predecessors, (47), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 144 [2024-11-18 22:25:52,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 22:25:52,875 INFO L225 Difference]: With dead ends: 1430 [2024-11-18 22:25:52,875 INFO L226 Difference]: Without dead ends: 1016 [2024-11-18 22:25:52,877 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=161, Invalid=439, Unknown=0, NotChecked=0, Total=600 [2024-11-18 22:25:52,878 INFO L432 NwaCegarLoop]: 180 mSDtfsCounter, 429 mSDsluCounter, 889 mSDsCounter, 0 mSdLazyCounter, 871 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 429 SdHoareTripleChecker+Valid, 1069 SdHoareTripleChecker+Invalid, 942 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 871 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-18 22:25:52,878 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [429 Valid, 1069 Invalid, 942 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 871 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-18 22:25:52,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1016 states. [2024-11-18 22:25:52,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1016 to 897. [2024-11-18 22:25:52,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 897 states, 804 states have (on average 1.3955223880597014) internal successors, (1122), 811 states have internal predecessors, (1122), 76 states have call successors, (76), 16 states have call predecessors, (76), 16 states have return successors, (76), 69 states have call predecessors, (76), 76 states have call successors, (76) [2024-11-18 22:25:52,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 897 states to 897 states and 1274 transitions. [2024-11-18 22:25:52,915 INFO L78 Accepts]: Start accepts. Automaton has 897 states and 1274 transitions. Word has length 144 [2024-11-18 22:25:52,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 22:25:52,915 INFO L471 AbstractCegarLoop]: Abstraction has 897 states and 1274 transitions. [2024-11-18 22:25:52,915 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.6153846153846154) internal successors, (47), 13 states have internal predecessors, (47), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-18 22:25:52,915 INFO L276 IsEmpty]: Start isEmpty. Operand 897 states and 1274 transitions. [2024-11-18 22:25:52,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2024-11-18 22:25:52,916 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 22:25:52,916 INFO L215 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:25:52,917 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-18 22:25:52,917 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 22:25:52,917 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 22:25:52,917 INFO L85 PathProgramCache]: Analyzing trace with hash -1304528217, now seen corresponding path program 1 times [2024-11-18 22:25:52,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 22:25:52,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767666299] [2024-11-18 22:25:52,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 22:25:52,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 22:25:52,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 22:26:10,386 WARN L286 SmtUtils]: Spent 5.84s on a formula simplification. DAG size of input: 166 DAG size of output: 162 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-18 22:26:22,675 WARN L286 SmtUtils]: Spent 5.76s on a formula simplification. DAG size of input: 167 DAG size of output: 163 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)