./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-85.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 803cd42f Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-85.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 8a0269ef8e9a97039e55b7063c2b754c2dc0d4d1e8e94f452102270054dac0b8 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-803cd42-m [2024-11-22 07:47:44,029 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-22 07:47:44,082 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-22 07:47:44,086 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-22 07:47:44,089 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-22 07:47:44,109 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-22 07:47:44,110 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-22 07:47:44,110 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-22 07:47:44,111 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-22 07:47:44,111 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-22 07:47:44,111 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-22 07:47:44,111 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-22 07:47:44,112 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-22 07:47:44,112 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-22 07:47:44,112 INFO L153 SettingsManager]: * Use SBE=true [2024-11-22 07:47:44,113 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-22 07:47:44,113 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-22 07:47:44,113 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-22 07:47:44,113 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-22 07:47:44,114 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-22 07:47:44,114 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-22 07:47:44,119 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-22 07:47:44,119 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-22 07:47:44,119 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-22 07:47:44,119 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-22 07:47:44,119 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-22 07:47:44,120 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-22 07:47:44,120 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-22 07:47:44,120 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-22 07:47:44,120 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-22 07:47:44,120 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-22 07:47:44,120 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-22 07:47:44,121 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 07:47:44,121 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-22 07:47:44,121 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-22 07:47:44,121 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-22 07:47:44,121 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-22 07:47:44,121 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-22 07:47:44,122 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-22 07:47:44,122 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-22 07:47:44,122 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-22 07:47:44,122 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-22 07:47:44,122 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8a0269ef8e9a97039e55b7063c2b754c2dc0d4d1e8e94f452102270054dac0b8 [2024-11-22 07:47:44,350 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-22 07:47:44,373 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-22 07:47:44,376 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-22 07:47:44,377 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-22 07:47:44,378 INFO L274 PluginConnector]: CDTParser initialized [2024-11-22 07:47:44,379 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-85.i [2024-11-22 07:47:45,768 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-22 07:47:46,018 INFO L384 CDTParser]: Found 1 translation units. [2024-11-22 07:47:46,019 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-85.i [2024-11-22 07:47:46,037 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f5048598b/ea70829ee3f14a00a70333e480b65b51/FLAG6552c361a [2024-11-22 07:47:46,052 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f5048598b/ea70829ee3f14a00a70333e480b65b51 [2024-11-22 07:47:46,055 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-22 07:47:46,058 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-22 07:47:46,060 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-22 07:47:46,061 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-22 07:47:46,069 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-22 07:47:46,070 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 07:47:46" (1/1) ... [2024-11-22 07:47:46,071 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f2b9a9a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 07:47:46, skipping insertion in model container [2024-11-22 07:47:46,071 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 07:47:46" (1/1) ... [2024-11-22 07:47:46,119 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-22 07:47:46,299 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-85.i[916,929] [2024-11-22 07:47:46,528 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 07:47:46,588 INFO L200 MainTranslator]: Completed pre-run [2024-11-22 07:47:46,605 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-85.i[916,929] [2024-11-22 07:47:46,693 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 07:47:46,723 INFO L204 MainTranslator]: Completed translation [2024-11-22 07:47:46,723 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 07:47:46 WrapperNode [2024-11-22 07:47:46,724 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-22 07:47:46,725 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-22 07:47:46,726 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-22 07:47:46,726 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-22 07:47:46,733 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 07:47:46" (1/1) ... [2024-11-22 07:47:46,755 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 07:47:46" (1/1) ... [2024-11-22 07:47:46,822 INFO L138 Inliner]: procedures = 26, calls = 113, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 858 [2024-11-22 07:47:46,823 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-22 07:47:46,824 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-22 07:47:46,824 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-22 07:47:46,824 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-22 07:47:46,835 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 07:47:46" (1/1) ... [2024-11-22 07:47:46,835 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 07:47:46" (1/1) ... [2024-11-22 07:47:46,845 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 07:47:46" (1/1) ... [2024-11-22 07:47:46,881 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-22 07:47:46,881 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 07:47:46" (1/1) ... [2024-11-22 07:47:46,881 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 07:47:46" (1/1) ... [2024-11-22 07:47:46,908 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 07:47:46" (1/1) ... [2024-11-22 07:47:46,917 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 07:47:46" (1/1) ... [2024-11-22 07:47:46,929 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 07:47:46" (1/1) ... [2024-11-22 07:47:46,939 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 07:47:46" (1/1) ... [2024-11-22 07:47:46,953 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-22 07:47:46,954 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-22 07:47:46,954 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-22 07:47:46,954 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-22 07:47:46,955 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 07:47:46" (1/1) ... [2024-11-22 07:47:46,960 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 07:47:46,968 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 07:47:46,983 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-22 07:47:46,985 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-22 07:47:47,024 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-22 07:47:47,024 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-22 07:47:47,024 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-22 07:47:47,024 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-22 07:47:47,025 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-22 07:47:47,025 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-22 07:47:47,154 INFO L238 CfgBuilder]: Building ICFG [2024-11-22 07:47:47,156 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-22 07:47:48,488 INFO L? ?]: Removed 26 outVars from TransFormulas that were not future-live. [2024-11-22 07:47:48,489 INFO L287 CfgBuilder]: Performing block encoding [2024-11-22 07:47:48,513 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-22 07:47:48,514 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-22 07:47:48,515 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 07:47:48 BoogieIcfgContainer [2024-11-22 07:47:48,517 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-22 07:47:48,519 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-22 07:47:48,519 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-22 07:47:48,523 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-22 07:47:48,523 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 07:47:46" (1/3) ... [2024-11-22 07:47:48,524 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e06caa1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 07:47:48, skipping insertion in model container [2024-11-22 07:47:48,525 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 07:47:46" (2/3) ... [2024-11-22 07:47:48,525 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e06caa1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 07:47:48, skipping insertion in model container [2024-11-22 07:47:48,525 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 07:47:48" (3/3) ... [2024-11-22 07:47:48,529 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-500_file-85.i [2024-11-22 07:47:48,546 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-22 07:47:48,547 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-22 07:47:48,638 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-22 07:47:48,645 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;@7f80e866, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-22 07:47:48,646 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-22 07:47:48,653 INFO L276 IsEmpty]: Start isEmpty. Operand has 352 states, 249 states have (on average 1.6305220883534137) internal successors, (406), 250 states have internal predecessors, (406), 100 states have call successors, (100), 1 states have call predecessors, (100), 1 states have return successors, (100), 100 states have call predecessors, (100), 100 states have call successors, (100) [2024-11-22 07:47:48,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 643 [2024-11-22 07:47:48,705 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 07:47:48,707 INFO L215 NwaCegarLoop]: trace histogram [100, 100, 100, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 07:47:48,708 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 07:47:48,713 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 07:47:48,714 INFO L85 PathProgramCache]: Analyzing trace with hash 2123991638, now seen corresponding path program 1 times [2024-11-22 07:47:48,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 07:47:48,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [797463179] [2024-11-22 07:47:48,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 07:47:48,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 07:47:48,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 07:47:49,506 INFO L134 CoverageAnalysis]: Checked inductivity of 19800 backedges. 0 proven. 198 refuted. 0 times theorem prover too weak. 19602 trivial. 0 not checked. [2024-11-22 07:47:49,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 07:47:49,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [797463179] [2024-11-22 07:47:49,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [797463179] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 07:47:49,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [604878704] [2024-11-22 07:47:49,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 07:47:49,510 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 07:47:49,511 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 07:47:49,514 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 07:47:49,516 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-22 07:47:49,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 07:47:49,950 INFO L255 TraceCheckSpWp]: Trace formula consists of 1475 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-22 07:47:49,982 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 07:47:50,082 INFO L134 CoverageAnalysis]: Checked inductivity of 19800 backedges. 198 proven. 0 refuted. 0 times theorem prover too weak. 19602 trivial. 0 not checked. [2024-11-22 07:47:50,083 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 07:47:50,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [604878704] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 07:47:50,084 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 07:47:50,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-22 07:47:50,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539265632] [2024-11-22 07:47:50,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 07:47:50,096 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-22 07:47:50,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 07:47:50,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-22 07:47:50,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-22 07:47:50,131 INFO L87 Difference]: Start difference. First operand has 352 states, 249 states have (on average 1.6305220883534137) internal successors, (406), 250 states have internal predecessors, (406), 100 states have call successors, (100), 1 states have call predecessors, (100), 1 states have return successors, (100), 100 states have call predecessors, (100), 100 states have call successors, (100) Second operand has 2 states, 2 states have (on average 73.5) internal successors, (147), 2 states have internal predecessors, (147), 2 states have call successors, (100), 2 states have call predecessors, (100), 1 states have return successors, (100), 1 states have call predecessors, (100), 2 states have call successors, (100) [2024-11-22 07:47:50,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 07:47:50,226 INFO L93 Difference]: Finished difference Result 697 states and 1306 transitions. [2024-11-22 07:47:50,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-22 07:47:50,233 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 73.5) internal successors, (147), 2 states have internal predecessors, (147), 2 states have call successors, (100), 2 states have call predecessors, (100), 1 states have return successors, (100), 1 states have call predecessors, (100), 2 states have call successors, (100) Word has length 642 [2024-11-22 07:47:50,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 07:47:50,248 INFO L225 Difference]: With dead ends: 697 [2024-11-22 07:47:50,249 INFO L226 Difference]: Without dead ends: 348 [2024-11-22 07:47:50,259 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 643 GetRequests, 643 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-22 07:47:50,264 INFO L432 NwaCegarLoop]: 597 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, 597 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 07:47:50,266 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 597 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 07:47:50,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 348 states. [2024-11-22 07:47:50,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 348 to 348. [2024-11-22 07:47:50,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 348 states, 246 states have (on average 1.613821138211382) internal successors, (397), 246 states have internal predecessors, (397), 100 states have call successors, (100), 1 states have call predecessors, (100), 1 states have return successors, (100), 100 states have call predecessors, (100), 100 states have call successors, (100) [2024-11-22 07:47:50,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 348 states to 348 states and 597 transitions. [2024-11-22 07:47:50,376 INFO L78 Accepts]: Start accepts. Automaton has 348 states and 597 transitions. Word has length 642 [2024-11-22 07:47:50,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 07:47:50,379 INFO L471 AbstractCegarLoop]: Abstraction has 348 states and 597 transitions. [2024-11-22 07:47:50,380 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 73.5) internal successors, (147), 2 states have internal predecessors, (147), 2 states have call successors, (100), 2 states have call predecessors, (100), 1 states have return successors, (100), 1 states have call predecessors, (100), 2 states have call successors, (100) [2024-11-22 07:47:50,380 INFO L276 IsEmpty]: Start isEmpty. Operand 348 states and 597 transitions. [2024-11-22 07:47:50,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 643 [2024-11-22 07:47:50,396 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 07:47:50,396 INFO L215 NwaCegarLoop]: trace histogram [100, 100, 100, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 07:47:50,411 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-22 07:47:50,600 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-22 07:47:50,601 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 07:47:50,602 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 07:47:50,602 INFO L85 PathProgramCache]: Analyzing trace with hash 571213254, now seen corresponding path program 1 times [2024-11-22 07:47:50,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 07:47:50,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632394650] [2024-11-22 07:47:50,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 07:47:50,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 07:47:50,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 07:47:51,136 INFO L134 CoverageAnalysis]: Checked inductivity of 19800 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19800 trivial. 0 not checked. [2024-11-22 07:47:51,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 07:47:51,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632394650] [2024-11-22 07:47:51,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [632394650] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 07:47:51,140 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 07:47:51,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 07:47:51,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290739949] [2024-11-22 07:47:51,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 07:47:51,142 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 07:47:51,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 07:47:51,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 07:47:51,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 07:47:51,144 INFO L87 Difference]: Start difference. First operand 348 states and 597 transitions. Second operand has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 1 states have call successors, (100), 1 states have call predecessors, (100), 1 states have return successors, (100), 1 states have call predecessors, (100), 1 states have call successors, (100) [2024-11-22 07:47:51,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 07:47:51,245 INFO L93 Difference]: Finished difference Result 902 states and 1559 transitions. [2024-11-22 07:47:51,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 07:47:51,246 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 1 states have call successors, (100), 1 states have call predecessors, (100), 1 states have return successors, (100), 1 states have call predecessors, (100), 1 states have call successors, (100) Word has length 642 [2024-11-22 07:47:51,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 07:47:51,253 INFO L225 Difference]: With dead ends: 902 [2024-11-22 07:47:51,253 INFO L226 Difference]: Without dead ends: 557 [2024-11-22 07:47:51,255 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 07:47:51,256 INFO L432 NwaCegarLoop]: 634 mSDtfsCounter, 356 mSDsluCounter, 580 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 356 SdHoareTripleChecker+Valid, 1214 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 07:47:51,256 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [356 Valid, 1214 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 07:47:51,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 557 states. [2024-11-22 07:47:51,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 557 to 554. [2024-11-22 07:47:51,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 554 states, 436 states have (on average 1.6720183486238531) internal successors, (729), 437 states have internal predecessors, (729), 115 states have call successors, (115), 2 states have call predecessors, (115), 2 states have return successors, (115), 114 states have call predecessors, (115), 115 states have call successors, (115) [2024-11-22 07:47:51,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 554 states to 554 states and 959 transitions. [2024-11-22 07:47:51,334 INFO L78 Accepts]: Start accepts. Automaton has 554 states and 959 transitions. Word has length 642 [2024-11-22 07:47:51,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 07:47:51,335 INFO L471 AbstractCegarLoop]: Abstraction has 554 states and 959 transitions. [2024-11-22 07:47:51,336 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 1 states have call successors, (100), 1 states have call predecessors, (100), 1 states have return successors, (100), 1 states have call predecessors, (100), 1 states have call successors, (100) [2024-11-22 07:47:51,336 INFO L276 IsEmpty]: Start isEmpty. Operand 554 states and 959 transitions. [2024-11-22 07:47:51,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 644 [2024-11-22 07:47:51,347 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 07:47:51,347 INFO L215 NwaCegarLoop]: trace histogram [100, 100, 100, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 07:47:51,347 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-22 07:47:51,348 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 07:47:51,348 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 07:47:51,348 INFO L85 PathProgramCache]: Analyzing trace with hash -1277891667, now seen corresponding path program 1 times [2024-11-22 07:47:51,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 07:47:51,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [815374045] [2024-11-22 07:47:51,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 07:47:51,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 07:47:51,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 07:47:51,676 INFO L134 CoverageAnalysis]: Checked inductivity of 19800 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19800 trivial. 0 not checked. [2024-11-22 07:47:51,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 07:47:51,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [815374045] [2024-11-22 07:47:51,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [815374045] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 07:47:51,677 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 07:47:51,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 07:47:51,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276327713] [2024-11-22 07:47:51,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 07:47:51,679 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 07:47:51,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 07:47:51,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 07:47:51,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 07:47:51,680 INFO L87 Difference]: Start difference. First operand 554 states and 959 transitions. Second operand has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 1 states have call successors, (100), 1 states have call predecessors, (100), 1 states have return successors, (100), 1 states have call predecessors, (100), 1 states have call successors, (100) [2024-11-22 07:47:51,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 07:47:51,762 INFO L93 Difference]: Finished difference Result 1487 states and 2569 transitions. [2024-11-22 07:47:51,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 07:47:51,763 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 1 states have call successors, (100), 1 states have call predecessors, (100), 1 states have return successors, (100), 1 states have call predecessors, (100), 1 states have call successors, (100) Word has length 643 [2024-11-22 07:47:51,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 07:47:51,774 INFO L225 Difference]: With dead ends: 1487 [2024-11-22 07:47:51,775 INFO L226 Difference]: Without dead ends: 936 [2024-11-22 07:47:51,777 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 07:47:51,779 INFO L432 NwaCegarLoop]: 957 mSDtfsCounter, 394 mSDsluCounter, 576 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 394 SdHoareTripleChecker+Valid, 1533 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 07:47:51,780 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [394 Valid, 1533 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 07:47:51,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 936 states. [2024-11-22 07:47:51,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 936 to 933. [2024-11-22 07:47:51,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 933 states, 729 states have (on average 1.6529492455418382) internal successors, (1205), 732 states have internal predecessors, (1205), 199 states have call successors, (199), 4 states have call predecessors, (199), 4 states have return successors, (199), 196 states have call predecessors, (199), 199 states have call successors, (199) [2024-11-22 07:47:51,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 933 states to 933 states and 1603 transitions. [2024-11-22 07:47:51,863 INFO L78 Accepts]: Start accepts. Automaton has 933 states and 1603 transitions. Word has length 643 [2024-11-22 07:47:51,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 07:47:51,866 INFO L471 AbstractCegarLoop]: Abstraction has 933 states and 1603 transitions. [2024-11-22 07:47:51,867 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 1 states have call successors, (100), 1 states have call predecessors, (100), 1 states have return successors, (100), 1 states have call predecessors, (100), 1 states have call successors, (100) [2024-11-22 07:47:51,867 INFO L276 IsEmpty]: Start isEmpty. Operand 933 states and 1603 transitions. [2024-11-22 07:47:51,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 644 [2024-11-22 07:47:51,876 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 07:47:51,877 INFO L215 NwaCegarLoop]: trace histogram [100, 100, 100, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 07:47:51,877 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-22 07:47:51,877 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 07:47:51,878 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 07:47:51,878 INFO L85 PathProgramCache]: Analyzing trace with hash 501858031, now seen corresponding path program 1 times [2024-11-22 07:47:51,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 07:47:51,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045783225] [2024-11-22 07:47:51,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 07:47:51,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 07:47:51,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 07:47:52,312 INFO L134 CoverageAnalysis]: Checked inductivity of 19800 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19800 trivial. 0 not checked. [2024-11-22 07:47:52,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 07:47:52,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2045783225] [2024-11-22 07:47:52,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2045783225] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 07:47:52,314 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 07:47:52,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 07:47:52,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303956782] [2024-11-22 07:47:52,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 07:47:52,315 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 07:47:52,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 07:47:52,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 07:47:52,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 07:47:52,317 INFO L87 Difference]: Start difference. First operand 933 states and 1603 transitions. Second operand has 4 states, 4 states have (on average 36.5) internal successors, (146), 4 states have internal predecessors, (146), 1 states have call successors, (100), 1 states have call predecessors, (100), 1 states have return successors, (100), 1 states have call predecessors, (100), 1 states have call successors, (100) [2024-11-22 07:47:52,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 07:47:52,946 INFO L93 Difference]: Finished difference Result 3498 states and 6018 transitions. [2024-11-22 07:47:52,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 07:47:52,947 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 36.5) internal successors, (146), 4 states have internal predecessors, (146), 1 states have call successors, (100), 1 states have call predecessors, (100), 1 states have return successors, (100), 1 states have call predecessors, (100), 1 states have call successors, (100) Word has length 643 [2024-11-22 07:47:52,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 07:47:52,967 INFO L225 Difference]: With dead ends: 3498 [2024-11-22 07:47:52,968 INFO L226 Difference]: Without dead ends: 2568 [2024-11-22 07:47:52,973 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-22 07:47:52,976 INFO L432 NwaCegarLoop]: 850 mSDtfsCounter, 763 mSDsluCounter, 1062 mSDsCounter, 0 mSdLazyCounter, 245 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 763 SdHoareTripleChecker+Valid, 1912 SdHoareTripleChecker+Invalid, 353 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 245 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-22 07:47:52,976 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [763 Valid, 1912 Invalid, 353 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 245 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-22 07:47:52,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2568 states. [2024-11-22 07:47:53,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2568 to 2562. [2024-11-22 07:47:53,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2562 states, 2051 states have (on average 1.6567528035104826) internal successors, (3398), 2061 states have internal predecessors, (3398), 498 states have call successors, (498), 12 states have call predecessors, (498), 12 states have return successors, (498), 488 states have call predecessors, (498), 498 states have call successors, (498) [2024-11-22 07:47:53,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2562 states to 2562 states and 4394 transitions. [2024-11-22 07:47:53,215 INFO L78 Accepts]: Start accepts. Automaton has 2562 states and 4394 transitions. Word has length 643 [2024-11-22 07:47:53,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 07:47:53,217 INFO L471 AbstractCegarLoop]: Abstraction has 2562 states and 4394 transitions. [2024-11-22 07:47:53,217 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.5) internal successors, (146), 4 states have internal predecessors, (146), 1 states have call successors, (100), 1 states have call predecessors, (100), 1 states have return successors, (100), 1 states have call predecessors, (100), 1 states have call successors, (100) [2024-11-22 07:47:53,217 INFO L276 IsEmpty]: Start isEmpty. Operand 2562 states and 4394 transitions. [2024-11-22 07:47:53,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 645 [2024-11-22 07:47:53,231 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 07:47:53,232 INFO L215 NwaCegarLoop]: trace histogram [100, 100, 100, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 07:47:53,232 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-22 07:47:53,232 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 07:47:53,233 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 07:47:53,233 INFO L85 PathProgramCache]: Analyzing trace with hash 508955656, now seen corresponding path program 1 times [2024-11-22 07:47:53,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 07:47:53,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750796538] [2024-11-22 07:47:53,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 07:47:53,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 07:47:53,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 07:47:53,616 INFO L134 CoverageAnalysis]: Checked inductivity of 19800 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19800 trivial. 0 not checked. [2024-11-22 07:47:53,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 07:47:53,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750796538] [2024-11-22 07:47:53,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [750796538] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 07:47:53,616 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 07:47:53,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 07:47:53,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505763200] [2024-11-22 07:47:53,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 07:47:53,618 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 07:47:53,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 07:47:53,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 07:47:53,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 07:47:53,620 INFO L87 Difference]: Start difference. First operand 2562 states and 4394 transitions. Second operand has 4 states, 4 states have (on average 36.75) internal successors, (147), 4 states have internal predecessors, (147), 1 states have call successors, (100), 1 states have call predecessors, (100), 1 states have return successors, (100), 1 states have call predecessors, (100), 1 states have call successors, (100) [2024-11-22 07:47:53,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 07:47:53,921 INFO L93 Difference]: Finished difference Result 5810 states and 9986 transitions. [2024-11-22 07:47:53,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 07:47:53,922 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 36.75) internal successors, (147), 4 states have internal predecessors, (147), 1 states have call successors, (100), 1 states have call predecessors, (100), 1 states have return successors, (100), 1 states have call predecessors, (100), 1 states have call successors, (100) Word has length 644 [2024-11-22 07:47:53,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 07:47:53,944 INFO L225 Difference]: With dead ends: 5810 [2024-11-22 07:47:53,944 INFO L226 Difference]: Without dead ends: 4880 [2024-11-22 07:47:53,952 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-22 07:47:53,952 INFO L432 NwaCegarLoop]: 1242 mSDtfsCounter, 1297 mSDsluCounter, 1911 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1297 SdHoareTripleChecker+Valid, 3153 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-22 07:47:53,953 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1297 Valid, 3153 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-22 07:47:53,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4880 states. [2024-11-22 07:47:54,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4880 to 4868. [2024-11-22 07:47:54,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4868 states, 3946 states have (on average 1.6662442980233148) internal successors, (6575), 3967 states have internal predecessors, (6575), 897 states have call successors, (897), 24 states have call predecessors, (897), 24 states have return successors, (897), 876 states have call predecessors, (897), 897 states have call successors, (897) [2024-11-22 07:47:54,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4868 states to 4868 states and 8369 transitions. [2024-11-22 07:47:54,241 INFO L78 Accepts]: Start accepts. Automaton has 4868 states and 8369 transitions. Word has length 644 [2024-11-22 07:47:54,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 07:47:54,243 INFO L471 AbstractCegarLoop]: Abstraction has 4868 states and 8369 transitions. [2024-11-22 07:47:54,244 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.75) internal successors, (147), 4 states have internal predecessors, (147), 1 states have call successors, (100), 1 states have call predecessors, (100), 1 states have return successors, (100), 1 states have call predecessors, (100), 1 states have call successors, (100) [2024-11-22 07:47:54,244 INFO L276 IsEmpty]: Start isEmpty. Operand 4868 states and 8369 transitions. [2024-11-22 07:47:54,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 646 [2024-11-22 07:47:54,254 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 07:47:54,254 INFO L215 NwaCegarLoop]: trace histogram [100, 100, 100, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 07:47:54,255 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-22 07:47:54,255 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 07:47:54,256 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 07:47:54,256 INFO L85 PathProgramCache]: Analyzing trace with hash 1024212110, now seen corresponding path program 1 times [2024-11-22 07:47:54,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 07:47:54,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221643385] [2024-11-22 07:47:54,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 07:47:54,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 07:47:54,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 07:47:54,537 INFO L134 CoverageAnalysis]: Checked inductivity of 19800 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19800 trivial. 0 not checked. [2024-11-22 07:47:54,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 07:47:54,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1221643385] [2024-11-22 07:47:54,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1221643385] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 07:47:54,538 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 07:47:54,538 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 07:47:54,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385430069] [2024-11-22 07:47:54,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 07:47:54,541 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 07:47:54,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 07:47:54,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 07:47:54,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 07:47:54,543 INFO L87 Difference]: Start difference. First operand 4868 states and 8369 transitions. Second operand has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 1 states have call successors, (100), 1 states have call predecessors, (100), 1 states have return successors, (100), 1 states have call predecessors, (100), 1 states have call successors, (100) [2024-11-22 07:47:54,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 07:47:54,803 INFO L93 Difference]: Finished difference Result 12225 states and 20804 transitions. [2024-11-22 07:47:54,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 07:47:54,804 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 1 states have call successors, (100), 1 states have call predecessors, (100), 1 states have return successors, (100), 1 states have call predecessors, (100), 1 states have call successors, (100) Word has length 645 [2024-11-22 07:47:54,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 07:47:54,843 INFO L225 Difference]: With dead ends: 12225 [2024-11-22 07:47:54,843 INFO L226 Difference]: Without dead ends: 7360 [2024-11-22 07:47:54,859 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 07:47:54,862 INFO L432 NwaCegarLoop]: 779 mSDtfsCounter, 251 mSDsluCounter, 582 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 251 SdHoareTripleChecker+Valid, 1361 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 07:47:54,863 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [251 Valid, 1361 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 07:47:54,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7360 states. [2024-11-22 07:47:55,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7360 to 7355. [2024-11-22 07:47:55,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7355 states, 5599 states have (on average 1.6024290051794963) internal successors, (8972), 5644 states have internal predecessors, (8972), 1707 states have call successors, (1707), 48 states have call predecessors, (1707), 48 states have return successors, (1707), 1662 states have call predecessors, (1707), 1707 states have call successors, (1707) [2024-11-22 07:47:55,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7355 states to 7355 states and 12386 transitions. [2024-11-22 07:47:55,429 INFO L78 Accepts]: Start accepts. Automaton has 7355 states and 12386 transitions. Word has length 645 [2024-11-22 07:47:55,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 07:47:55,431 INFO L471 AbstractCegarLoop]: Abstraction has 7355 states and 12386 transitions. [2024-11-22 07:47:55,432 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 1 states have call successors, (100), 1 states have call predecessors, (100), 1 states have return successors, (100), 1 states have call predecessors, (100), 1 states have call successors, (100) [2024-11-22 07:47:55,432 INFO L276 IsEmpty]: Start isEmpty. Operand 7355 states and 12386 transitions. [2024-11-22 07:47:55,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 646 [2024-11-22 07:47:55,445 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 07:47:55,446 INFO L215 NwaCegarLoop]: trace histogram [100, 100, 100, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 07:47:55,446 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-22 07:47:55,446 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 07:47:55,447 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 07:47:55,447 INFO L85 PathProgramCache]: Analyzing trace with hash -1581811444, now seen corresponding path program 1 times [2024-11-22 07:47:55,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 07:47:55,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344911996] [2024-11-22 07:47:55,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 07:47:55,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 07:47:55,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 07:47:56,774 INFO L134 CoverageAnalysis]: Checked inductivity of 19800 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19800 trivial. 0 not checked. [2024-11-22 07:47:56,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 07:47:56,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [344911996] [2024-11-22 07:47:56,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [344911996] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 07:47:56,775 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 07:47:56,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-22 07:47:56,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743603666] [2024-11-22 07:47:56,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 07:47:56,777 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 07:47:56,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 07:47:56,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 07:47:56,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-22 07:47:56,779 INFO L87 Difference]: Start difference. First operand 7355 states and 12386 transitions. Second operand has 6 states, 6 states have (on average 24.666666666666668) internal successors, (148), 6 states have internal predecessors, (148), 2 states have call successors, (100), 1 states have call predecessors, (100), 1 states have return successors, (100), 2 states have call predecessors, (100), 2 states have call successors, (100) [2024-11-22 07:47:58,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 07:47:58,632 INFO L93 Difference]: Finished difference Result 29779 states and 49753 transitions. [2024-11-22 07:47:58,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 07:47:58,636 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 24.666666666666668) internal successors, (148), 6 states have internal predecessors, (148), 2 states have call successors, (100), 1 states have call predecessors, (100), 1 states have return successors, (100), 2 states have call predecessors, (100), 2 states have call successors, (100) Word has length 645 [2024-11-22 07:47:58,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 07:47:58,760 INFO L225 Difference]: With dead ends: 29779 [2024-11-22 07:47:58,760 INFO L226 Difference]: Without dead ends: 22427 [2024-11-22 07:47:58,789 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-22 07:47:58,791 INFO L432 NwaCegarLoop]: 654 mSDtfsCounter, 1951 mSDsluCounter, 2250 mSDsCounter, 0 mSdLazyCounter, 677 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1951 SdHoareTripleChecker+Valid, 2904 SdHoareTripleChecker+Invalid, 779 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 677 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-22 07:47:58,791 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1951 Valid, 2904 Invalid, 779 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 677 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-22 07:47:58,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22427 states. [2024-11-22 07:48:00,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22427 to 18185. [2024-11-22 07:48:00,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18185 states, 13858 states have (on average 1.590489248087747) internal successors, (22041), 13996 states have internal predecessors, (22041), 4182 states have call successors, (4182), 144 states have call predecessors, (4182), 144 states have return successors, (4182), 4044 states have call predecessors, (4182), 4182 states have call successors, (4182) [2024-11-22 07:48:00,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18185 states to 18185 states and 30405 transitions. [2024-11-22 07:48:00,947 INFO L78 Accepts]: Start accepts. Automaton has 18185 states and 30405 transitions. Word has length 645 [2024-11-22 07:48:00,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 07:48:00,949 INFO L471 AbstractCegarLoop]: Abstraction has 18185 states and 30405 transitions. [2024-11-22 07:48:00,950 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 24.666666666666668) internal successors, (148), 6 states have internal predecessors, (148), 2 states have call successors, (100), 1 states have call predecessors, (100), 1 states have return successors, (100), 2 states have call predecessors, (100), 2 states have call successors, (100) [2024-11-22 07:48:00,950 INFO L276 IsEmpty]: Start isEmpty. Operand 18185 states and 30405 transitions. [2024-11-22 07:48:00,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 646 [2024-11-22 07:48:00,981 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 07:48:00,982 INFO L215 NwaCegarLoop]: trace histogram [100, 100, 100, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 07:48:00,982 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-22 07:48:00,982 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 07:48:00,982 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 07:48:00,983 INFO L85 PathProgramCache]: Analyzing trace with hash -1999208050, now seen corresponding path program 1 times [2024-11-22 07:48:00,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 07:48:00,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715142700] [2024-11-22 07:48:00,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 07:48:00,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 07:48:01,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 07:48:01,960 INFO L134 CoverageAnalysis]: Checked inductivity of 19800 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19800 trivial. 0 not checked. [2024-11-22 07:48:01,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 07:48:01,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [715142700] [2024-11-22 07:48:01,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [715142700] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 07:48:01,961 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 07:48:01,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 07:48:01,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70705869] [2024-11-22 07:48:01,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 07:48:01,962 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 07:48:01,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 07:48:01,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 07:48:01,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-22 07:48:01,963 INFO L87 Difference]: Start difference. First operand 18185 states and 30405 transitions. Second operand has 5 states, 5 states have (on average 29.6) internal successors, (148), 5 states have internal predecessors, (148), 1 states have call successors, (100), 1 states have call predecessors, (100), 1 states have return successors, (100), 1 states have call predecessors, (100), 1 states have call successors, (100) [2024-11-22 07:48:04,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 07:48:04,788 INFO L93 Difference]: Finished difference Result 69635 states and 116554 transitions. [2024-11-22 07:48:04,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-22 07:48:04,796 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.6) internal successors, (148), 5 states have internal predecessors, (148), 1 states have call successors, (100), 1 states have call predecessors, (100), 1 states have return successors, (100), 1 states have call predecessors, (100), 1 states have call successors, (100) Word has length 645 [2024-11-22 07:48:04,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 07:48:05,096 INFO L225 Difference]: With dead ends: 69635 [2024-11-22 07:48:05,096 INFO L226 Difference]: Without dead ends: 57529 [2024-11-22 07:48:05,168 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2024-11-22 07:48:05,169 INFO L432 NwaCegarLoop]: 1308 mSDtfsCounter, 1166 mSDsluCounter, 3072 mSDsCounter, 0 mSdLazyCounter, 280 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1166 SdHoareTripleChecker+Valid, 4380 SdHoareTripleChecker+Invalid, 358 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 280 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-22 07:48:05,170 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1166 Valid, 4380 Invalid, 358 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 280 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-22 07:48:05,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57529 states. [2024-11-22 07:48:08,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57529 to 45981. [2024-11-22 07:48:08,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45981 states, 35732 states have (on average 1.600022388895108) internal successors, (57172), 36108 states have internal predecessors, (57172), 9864 states have call successors, (9864), 384 states have call predecessors, (9864), 384 states have return successors, (9864), 9488 states have call predecessors, (9864), 9864 states have call successors, (9864) [2024-11-22 07:48:09,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45981 states to 45981 states and 76900 transitions. [2024-11-22 07:48:09,180 INFO L78 Accepts]: Start accepts. Automaton has 45981 states and 76900 transitions. Word has length 645 [2024-11-22 07:48:09,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 07:48:09,182 INFO L471 AbstractCegarLoop]: Abstraction has 45981 states and 76900 transitions. [2024-11-22 07:48:09,182 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.6) internal successors, (148), 5 states have internal predecessors, (148), 1 states have call successors, (100), 1 states have call predecessors, (100), 1 states have return successors, (100), 1 states have call predecessors, (100), 1 states have call successors, (100) [2024-11-22 07:48:09,182 INFO L276 IsEmpty]: Start isEmpty. Operand 45981 states and 76900 transitions. [2024-11-22 07:48:09,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 646 [2024-11-22 07:48:09,229 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 07:48:09,229 INFO L215 NwaCegarLoop]: trace histogram [100, 100, 100, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 07:48:09,230 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-22 07:48:09,230 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 07:48:09,230 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 07:48:09,231 INFO L85 PathProgramCache]: Analyzing trace with hash 100225102, now seen corresponding path program 1 times [2024-11-22 07:48:09,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 07:48:09,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95281772] [2024-11-22 07:48:09,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 07:48:09,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 07:48:09,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 07:48:10,681 INFO L134 CoverageAnalysis]: Checked inductivity of 19800 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19800 trivial. 0 not checked. [2024-11-22 07:48:10,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 07:48:10,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [95281772] [2024-11-22 07:48:10,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [95281772] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 07:48:10,682 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 07:48:10,682 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-22 07:48:10,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726784330] [2024-11-22 07:48:10,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 07:48:10,683 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-22 07:48:10,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 07:48:10,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-22 07:48:10,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-22 07:48:10,685 INFO L87 Difference]: Start difference. First operand 45981 states and 76900 transitions. Second operand has 7 states, 7 states have (on average 21.142857142857142) internal successors, (148), 7 states have internal predecessors, (148), 2 states have call successors, (100), 1 states have call predecessors, (100), 1 states have return successors, (100), 2 states have call predecessors, (100), 2 states have call successors, (100) [2024-11-22 07:48:12,748 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.45s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-22 07:48:22,480 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-22 07:48:24,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 07:48:24,794 INFO L93 Difference]: Finished difference Result 185517 states and 310047 transitions. [2024-11-22 07:48:24,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-22 07:48:24,795 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.142857142857142) internal successors, (148), 7 states have internal predecessors, (148), 2 states have call successors, (100), 1 states have call predecessors, (100), 1 states have return successors, (100), 2 states have call predecessors, (100), 2 states have call successors, (100) Word has length 645 [2024-11-22 07:48:24,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 07:48:25,775 INFO L225 Difference]: With dead ends: 185517 [2024-11-22 07:48:25,775 INFO L226 Difference]: Without dead ends: 139539 [2024-11-22 07:48:25,908 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2024-11-22 07:48:25,909 INFO L432 NwaCegarLoop]: 1627 mSDtfsCounter, 1695 mSDsluCounter, 4804 mSDsCounter, 0 mSdLazyCounter, 1377 mSolverCounterSat, 317 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1695 SdHoareTripleChecker+Valid, 6431 SdHoareTripleChecker+Invalid, 1695 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 317 IncrementalHoareTripleChecker+Valid, 1377 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.6s IncrementalHoareTripleChecker+Time [2024-11-22 07:48:25,909 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1695 Valid, 6431 Invalid, 1695 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [317 Valid, 1377 Invalid, 1 Unknown, 0 Unchecked, 7.6s Time] [2024-11-22 07:48:26,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139539 states. [2024-11-22 07:48:32,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139539 to 103396. [2024-11-22 07:48:32,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103396 states, 80298 states have (on average 1.5944357269172333) internal successors, (128030), 81145 states have internal predecessors, (128030), 22231 states have call successors, (22231), 866 states have call predecessors, (22231), 866 states have return successors, (22231), 21384 states have call predecessors, (22231), 22231 states have call successors, (22231) [2024-11-22 07:48:33,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103396 states to 103396 states and 172492 transitions. [2024-11-22 07:48:33,538 INFO L78 Accepts]: Start accepts. Automaton has 103396 states and 172492 transitions. Word has length 645 [2024-11-22 07:48:33,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 07:48:33,540 INFO L471 AbstractCegarLoop]: Abstraction has 103396 states and 172492 transitions. [2024-11-22 07:48:33,541 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.142857142857142) internal successors, (148), 7 states have internal predecessors, (148), 2 states have call successors, (100), 1 states have call predecessors, (100), 1 states have return successors, (100), 2 states have call predecessors, (100), 2 states have call successors, (100) [2024-11-22 07:48:33,541 INFO L276 IsEmpty]: Start isEmpty. Operand 103396 states and 172492 transitions. [2024-11-22 07:48:33,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 647 [2024-11-22 07:48:33,645 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 07:48:33,645 INFO L215 NwaCegarLoop]: trace histogram [100, 100, 100, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 07:48:33,646 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-22 07:48:33,646 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 07:48:33,646 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 07:48:33,647 INFO L85 PathProgramCache]: Analyzing trace with hash -1319599064, now seen corresponding path program 1 times [2024-11-22 07:48:33,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 07:48:33,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961508756] [2024-11-22 07:48:33,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 07:48:33,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 07:48:33,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 07:48:33,999 INFO L134 CoverageAnalysis]: Checked inductivity of 19800 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19800 trivial. 0 not checked. [2024-11-22 07:48:33,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 07:48:34,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1961508756] [2024-11-22 07:48:34,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1961508756] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 07:48:34,000 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 07:48:34,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 07:48:34,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621919705] [2024-11-22 07:48:34,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 07:48:34,002 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 07:48:34,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 07:48:34,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 07:48:34,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 07:48:34,003 INFO L87 Difference]: Start difference. First operand 103396 states and 172492 transitions. Second operand has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 1 states have call successors, (100), 1 states have call predecessors, (100), 1 states have return successors, (100), 1 states have call predecessors, (100), 1 states have call successors, (100) [2024-11-22 07:48:39,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 07:48:39,476 INFO L93 Difference]: Finished difference Result 221504 states and 371498 transitions. [2024-11-22 07:48:39,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 07:48:39,477 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 1 states have call successors, (100), 1 states have call predecessors, (100), 1 states have return successors, (100), 1 states have call predecessors, (100), 1 states have call successors, (100) Word has length 646 [2024-11-22 07:48:39,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 07:48:39,922 INFO L225 Difference]: With dead ends: 221504 [2024-11-22 07:48:39,922 INFO L226 Difference]: Without dead ends: 118176 [2024-11-22 07:48:40,192 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 07:48:40,193 INFO L432 NwaCegarLoop]: 595 mSDtfsCounter, 375 mSDsluCounter, 580 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 375 SdHoareTripleChecker+Valid, 1175 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 07:48:40,194 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [375 Valid, 1175 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 07:48:40,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118176 states. [2024-11-22 07:48:45,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118176 to 90382. [2024-11-22 07:48:45,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90382 states, 78534 states have (on average 1.673491736063361) internal successors, (131426), 78949 states have internal predecessors, (131426), 11395 states have call successors, (11395), 452 states have call predecessors, (11395), 452 states have return successors, (11395), 10980 states have call predecessors, (11395), 11395 states have call successors, (11395) [2024-11-22 07:48:45,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90382 states to 90382 states and 154216 transitions. [2024-11-22 07:48:45,566 INFO L78 Accepts]: Start accepts. Automaton has 90382 states and 154216 transitions. Word has length 646 [2024-11-22 07:48:45,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 07:48:45,567 INFO L471 AbstractCegarLoop]: Abstraction has 90382 states and 154216 transitions. [2024-11-22 07:48:45,568 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 1 states have call successors, (100), 1 states have call predecessors, (100), 1 states have return successors, (100), 1 states have call predecessors, (100), 1 states have call successors, (100) [2024-11-22 07:48:45,568 INFO L276 IsEmpty]: Start isEmpty. Operand 90382 states and 154216 transitions. [2024-11-22 07:48:45,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 647 [2024-11-22 07:48:45,628 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 07:48:45,628 INFO L215 NwaCegarLoop]: trace histogram [100, 100, 100, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 07:48:45,629 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-22 07:48:45,629 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 07:48:45,629 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 07:48:45,629 INFO L85 PathProgramCache]: Analyzing trace with hash -205395224, now seen corresponding path program 1 times [2024-11-22 07:48:45,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 07:48:45,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663713016] [2024-11-22 07:48:45,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 07:48:45,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 07:48:45,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 07:48:53,877 INFO L134 CoverageAnalysis]: Checked inductivity of 19800 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19800 trivial. 0 not checked. [2024-11-22 07:48:53,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 07:48:53,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [663713016] [2024-11-22 07:48:53,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [663713016] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 07:48:53,878 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 07:48:53,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-11-22 07:48:53,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863382443] [2024-11-22 07:48:53,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 07:48:53,878 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-22 07:48:53,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 07:48:53,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-22 07:48:53,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-11-22 07:48:53,879 INFO L87 Difference]: Start difference. First operand 90382 states and 154216 transitions. Second operand has 13 states, 13 states have (on average 11.461538461538462) internal successors, (149), 13 states have internal predecessors, (149), 3 states have call successors, (100), 1 states have call predecessors, (100), 1 states have return successors, (100), 3 states have call predecessors, (100), 3 states have call successors, (100)