./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-36.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-250_file-36.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 08d675ba4148739e9e7cf1bbda146cfc1e7cae9e235e349f1daedec05eaa7d10 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-803cd42-m [2024-11-22 07:22:41,830 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-22 07:22:41,881 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-22 07:22:41,886 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-22 07:22:41,886 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-22 07:22:41,904 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-22 07:22:41,905 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-22 07:22:41,905 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-22 07:22:41,906 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-22 07:22:41,907 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-22 07:22:41,907 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-22 07:22:41,907 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-22 07:22:41,908 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-22 07:22:41,909 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-22 07:22:41,910 INFO L153 SettingsManager]: * Use SBE=true [2024-11-22 07:22:41,910 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-22 07:22:41,910 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-22 07:22:41,910 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-22 07:22:41,911 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-22 07:22:41,911 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-22 07:22:41,911 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-22 07:22:41,911 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-22 07:22:41,912 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-22 07:22:41,912 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-22 07:22:41,912 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-22 07:22:41,912 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-22 07:22:41,913 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-22 07:22:41,913 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-22 07:22:41,913 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-22 07:22:41,913 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-22 07:22:41,913 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-22 07:22:41,914 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-22 07:22:41,914 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 07:22:41,914 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-22 07:22:41,914 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-22 07:22:41,915 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-22 07:22:41,915 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-22 07:22:41,915 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-22 07:22:41,915 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-22 07:22:41,916 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-22 07:22:41,916 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-22 07:22:41,917 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-22 07:22:41,917 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 08d675ba4148739e9e7cf1bbda146cfc1e7cae9e235e349f1daedec05eaa7d10 [2024-11-22 07:22:42,107 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-22 07:22:42,126 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-22 07:22:42,128 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-22 07:22:42,128 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-22 07:22:42,129 INFO L274 PluginConnector]: CDTParser initialized [2024-11-22 07:22:42,130 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-36.i [2024-11-22 07:22:43,359 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-22 07:22:43,558 INFO L384 CDTParser]: Found 1 translation units. [2024-11-22 07:22:43,558 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-36.i [2024-11-22 07:22:43,571 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/79425e478/e76c91dee24d4b3695cb2a2e1c20d1de/FLAG0b34e9246 [2024-11-22 07:22:43,582 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/79425e478/e76c91dee24d4b3695cb2a2e1c20d1de [2024-11-22 07:22:43,584 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-22 07:22:43,585 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-22 07:22:43,586 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-22 07:22:43,586 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-22 07:22:43,590 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-22 07:22:43,590 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 07:22:43" (1/1) ... [2024-11-22 07:22:43,591 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@73499876 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 07:22:43, skipping insertion in model container [2024-11-22 07:22:43,591 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 07:22:43" (1/1) ... [2024-11-22 07:22:43,625 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-22 07:22:43,767 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-36.i[916,929] [2024-11-22 07:22:43,890 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 07:22:43,920 INFO L200 MainTranslator]: Completed pre-run [2024-11-22 07:22:43,929 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-36.i[916,929] [2024-11-22 07:22:43,993 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 07:22:44,018 INFO L204 MainTranslator]: Completed translation [2024-11-22 07:22:44,019 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 07:22:44 WrapperNode [2024-11-22 07:22:44,019 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-22 07:22:44,020 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-22 07:22:44,020 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-22 07:22:44,020 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-22 07:22:44,025 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 07:22:44" (1/1) ... [2024-11-22 07:22:44,039 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 07:22:44" (1/1) ... [2024-11-22 07:22:44,079 INFO L138 Inliner]: procedures = 26, calls = 105, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 615 [2024-11-22 07:22:44,079 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-22 07:22:44,080 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-22 07:22:44,080 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-22 07:22:44,080 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-22 07:22:44,089 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 07:22:44" (1/1) ... [2024-11-22 07:22:44,089 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 07:22:44" (1/1) ... [2024-11-22 07:22:44,102 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 07:22:44" (1/1) ... [2024-11-22 07:22:44,135 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 07:22:44,135 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 07:22:44" (1/1) ... [2024-11-22 07:22:44,135 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 07:22:44" (1/1) ... [2024-11-22 07:22:44,155 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 07:22:44" (1/1) ... [2024-11-22 07:22:44,163 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 07:22:44" (1/1) ... [2024-11-22 07:22:44,167 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 07:22:44" (1/1) ... [2024-11-22 07:22:44,174 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 07:22:44" (1/1) ... [2024-11-22 07:22:44,184 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-22 07:22:44,186 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-22 07:22:44,186 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-22 07:22:44,186 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-22 07:22:44,187 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 07:22:44" (1/1) ... [2024-11-22 07:22:44,191 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 07:22:44,199 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 07:22:44,219 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 07:22:44,225 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 07:22:44,260 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-22 07:22:44,260 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-22 07:22:44,261 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-22 07:22:44,261 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-22 07:22:44,261 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-22 07:22:44,261 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-22 07:22:44,374 INFO L238 CfgBuilder]: Building ICFG [2024-11-22 07:22:44,376 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-22 07:22:45,046 INFO L? ?]: Removed 18 outVars from TransFormulas that were not future-live. [2024-11-22 07:22:45,046 INFO L287 CfgBuilder]: Performing block encoding [2024-11-22 07:22:45,064 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-22 07:22:45,066 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-22 07:22:45,066 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 07:22:45 BoogieIcfgContainer [2024-11-22 07:22:45,066 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-22 07:22:45,068 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-22 07:22:45,068 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-22 07:22:45,071 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-22 07:22:45,071 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 07:22:43" (1/3) ... [2024-11-22 07:22:45,072 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c2dfa6c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 07:22:45, skipping insertion in model container [2024-11-22 07:22:45,072 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 07:22:44" (2/3) ... [2024-11-22 07:22:45,072 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c2dfa6c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 07:22:45, skipping insertion in model container [2024-11-22 07:22:45,073 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 07:22:45" (3/3) ... [2024-11-22 07:22:45,074 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-250_file-36.i [2024-11-22 07:22:45,086 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-22 07:22:45,086 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-22 07:22:45,207 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-22 07:22:45,212 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;@726e302d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-22 07:22:45,212 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-22 07:22:45,217 INFO L276 IsEmpty]: Start isEmpty. Operand has 263 states, 168 states have (on average 1.494047619047619) internal successors, (251), 169 states have internal predecessors, (251), 92 states have call successors, (92), 1 states have call predecessors, (92), 1 states have return successors, (92), 92 states have call predecessors, (92), 92 states have call successors, (92) [2024-11-22 07:22:45,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 575 [2024-11-22 07:22:45,243 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 07:22:45,244 INFO L215 NwaCegarLoop]: trace histogram [92, 92, 92, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:22:45,245 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 07:22:45,248 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 07:22:45,249 INFO L85 PathProgramCache]: Analyzing trace with hash 1928267879, now seen corresponding path program 1 times [2024-11-22 07:22:45,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 07:22:45,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618142014] [2024-11-22 07:22:45,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 07:22:45,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 07:22:45,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 07:22:45,705 INFO L134 CoverageAnalysis]: Checked inductivity of 16744 backedges. 0 proven. 182 refuted. 0 times theorem prover too weak. 16562 trivial. 0 not checked. [2024-11-22 07:22:45,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 07:22:45,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [618142014] [2024-11-22 07:22:45,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [618142014] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 07:22:45,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [645374094] [2024-11-22 07:22:45,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 07:22:45,707 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 07:22:45,708 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 07:22:45,710 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 07:22:45,711 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 07:22:45,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 07:22:46,001 INFO L255 TraceCheckSpWp]: Trace formula consists of 1248 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-22 07:22:46,019 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 07:22:46,070 INFO L134 CoverageAnalysis]: Checked inductivity of 16744 backedges. 182 proven. 0 refuted. 0 times theorem prover too weak. 16562 trivial. 0 not checked. [2024-11-22 07:22:46,070 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 07:22:46,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [645374094] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 07:22:46,071 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 07:22:46,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-22 07:22:46,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168419286] [2024-11-22 07:22:46,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 07:22:46,078 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-22 07:22:46,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 07:22:46,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-22 07:22:46,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-22 07:22:46,097 INFO L87 Difference]: Start difference. First operand has 263 states, 168 states have (on average 1.494047619047619) internal successors, (251), 169 states have internal predecessors, (251), 92 states have call successors, (92), 1 states have call predecessors, (92), 1 states have return successors, (92), 92 states have call predecessors, (92), 92 states have call successors, (92) Second operand has 2 states, 2 states have (on average 59.5) internal successors, (119), 2 states have internal predecessors, (119), 2 states have call successors, (92), 2 states have call predecessors, (92), 1 states have return successors, (92), 1 states have call predecessors, (92), 2 states have call successors, (92) [2024-11-22 07:22:46,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 07:22:46,154 INFO L93 Difference]: Finished difference Result 515 states and 950 transitions. [2024-11-22 07:22:46,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-22 07:22:46,159 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 59.5) internal successors, (119), 2 states have internal predecessors, (119), 2 states have call successors, (92), 2 states have call predecessors, (92), 1 states have return successors, (92), 1 states have call predecessors, (92), 2 states have call successors, (92) Word has length 574 [2024-11-22 07:22:46,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 07:22:46,169 INFO L225 Difference]: With dead ends: 515 [2024-11-22 07:22:46,169 INFO L226 Difference]: Without dead ends: 255 [2024-11-22 07:22:46,176 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 575 GetRequests, 575 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 07:22:46,180 INFO L432 NwaCegarLoop]: 418 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, 418 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 07:22:46,181 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 418 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 07:22:46,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2024-11-22 07:22:46,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 255. [2024-11-22 07:22:46,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 161 states have (on average 1.453416149068323) internal successors, (234), 161 states have internal predecessors, (234), 92 states have call successors, (92), 1 states have call predecessors, (92), 1 states have return successors, (92), 92 states have call predecessors, (92), 92 states have call successors, (92) [2024-11-22 07:22:46,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 418 transitions. [2024-11-22 07:22:46,255 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 418 transitions. Word has length 574 [2024-11-22 07:22:46,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 07:22:46,256 INFO L471 AbstractCegarLoop]: Abstraction has 255 states and 418 transitions. [2024-11-22 07:22:46,256 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 59.5) internal successors, (119), 2 states have internal predecessors, (119), 2 states have call successors, (92), 2 states have call predecessors, (92), 1 states have return successors, (92), 1 states have call predecessors, (92), 2 states have call successors, (92) [2024-11-22 07:22:46,256 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 418 transitions. [2024-11-22 07:22:46,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 575 [2024-11-22 07:22:46,265 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 07:22:46,266 INFO L215 NwaCegarLoop]: trace histogram [92, 92, 92, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:22:46,275 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 07:22:46,466 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 07:22:46,467 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 07:22:46,467 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 07:22:46,468 INFO L85 PathProgramCache]: Analyzing trace with hash -1816391901, now seen corresponding path program 1 times [2024-11-22 07:22:46,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 07:22:46,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481174744] [2024-11-22 07:22:46,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 07:22:46,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 07:22:46,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 07:22:46,810 INFO L134 CoverageAnalysis]: Checked inductivity of 16744 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16744 trivial. 0 not checked. [2024-11-22 07:22:46,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 07:22:46,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481174744] [2024-11-22 07:22:46,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1481174744] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 07:22:46,811 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 07:22:46,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 07:22:46,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861419634] [2024-11-22 07:22:46,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 07:22:46,813 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 07:22:46,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 07:22:46,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 07:22:46,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 07:22:46,816 INFO L87 Difference]: Start difference. First operand 255 states and 418 transitions. Second operand has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 1 states have call successors, (92), 1 states have call predecessors, (92), 1 states have return successors, (92), 1 states have call predecessors, (92), 1 states have call successors, (92) [2024-11-22 07:22:46,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 07:22:46,891 INFO L93 Difference]: Finished difference Result 657 states and 1078 transitions. [2024-11-22 07:22:46,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 07:22:46,891 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 1 states have call successors, (92), 1 states have call predecessors, (92), 1 states have return successors, (92), 1 states have call predecessors, (92), 1 states have call successors, (92) Word has length 574 [2024-11-22 07:22:46,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 07:22:46,898 INFO L225 Difference]: With dead ends: 657 [2024-11-22 07:22:46,898 INFO L226 Difference]: Without dead ends: 405 [2024-11-22 07:22:46,900 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 07:22:46,900 INFO L432 NwaCegarLoop]: 516 mSDtfsCounter, 208 mSDsluCounter, 402 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 208 SdHoareTripleChecker+Valid, 918 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 07:22:46,901 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [208 Valid, 918 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 07:22:46,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 405 states. [2024-11-22 07:22:46,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 405 to 402. [2024-11-22 07:22:46,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 402 states, 269 states have (on average 1.479553903345725) internal successors, (398), 270 states have internal predecessors, (398), 130 states have call successors, (130), 2 states have call predecessors, (130), 2 states have return successors, (130), 129 states have call predecessors, (130), 130 states have call successors, (130) [2024-11-22 07:22:46,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 402 states to 402 states and 658 transitions. [2024-11-22 07:22:46,951 INFO L78 Accepts]: Start accepts. Automaton has 402 states and 658 transitions. Word has length 574 [2024-11-22 07:22:46,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 07:22:46,953 INFO L471 AbstractCegarLoop]: Abstraction has 402 states and 658 transitions. [2024-11-22 07:22:46,953 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 1 states have call successors, (92), 1 states have call predecessors, (92), 1 states have return successors, (92), 1 states have call predecessors, (92), 1 states have call successors, (92) [2024-11-22 07:22:46,953 INFO L276 IsEmpty]: Start isEmpty. Operand 402 states and 658 transitions. [2024-11-22 07:22:46,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 575 [2024-11-22 07:22:46,958 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 07:22:46,958 INFO L215 NwaCegarLoop]: trace histogram [92, 92, 92, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:22:46,958 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-22 07:22:46,959 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 07:22:46,959 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 07:22:46,959 INFO L85 PathProgramCache]: Analyzing trace with hash 1457507041, now seen corresponding path program 1 times [2024-11-22 07:22:46,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 07:22:46,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885142796] [2024-11-22 07:22:46,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 07:22:46,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 07:22:47,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 07:22:47,576 INFO L134 CoverageAnalysis]: Checked inductivity of 16744 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16744 trivial. 0 not checked. [2024-11-22 07:22:47,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 07:22:47,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885142796] [2024-11-22 07:22:47,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [885142796] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 07:22:47,578 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 07:22:47,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 07:22:47,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847169076] [2024-11-22 07:22:47,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 07:22:47,579 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 07:22:47,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 07:22:47,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 07:22:47,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-22 07:22:47,581 INFO L87 Difference]: Start difference. First operand 402 states and 658 transitions. Second operand has 5 states, 5 states have (on average 23.4) internal successors, (117), 5 states have internal predecessors, (117), 1 states have call successors, (92), 1 states have call predecessors, (92), 1 states have return successors, (92), 1 states have call predecessors, (92), 1 states have call successors, (92) [2024-11-22 07:22:47,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 07:22:47,932 INFO L93 Difference]: Finished difference Result 1517 states and 2496 transitions. [2024-11-22 07:22:47,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-22 07:22:47,935 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 23.4) internal successors, (117), 5 states have internal predecessors, (117), 1 states have call successors, (92), 1 states have call predecessors, (92), 1 states have return successors, (92), 1 states have call predecessors, (92), 1 states have call successors, (92) Word has length 574 [2024-11-22 07:22:47,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 07:22:47,944 INFO L225 Difference]: With dead ends: 1517 [2024-11-22 07:22:47,944 INFO L226 Difference]: Without dead ends: 1118 [2024-11-22 07:22:47,945 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-22 07:22:47,947 INFO L432 NwaCegarLoop]: 609 mSDtfsCounter, 892 mSDsluCounter, 1013 mSDsCounter, 0 mSdLazyCounter, 180 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 892 SdHoareTripleChecker+Valid, 1622 SdHoareTripleChecker+Invalid, 253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-22 07:22:47,948 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [892 Valid, 1622 Invalid, 253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 180 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-22 07:22:47,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1118 states. [2024-11-22 07:22:48,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1118 to 955. [2024-11-22 07:22:48,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 955 states, 694 states have (on average 1.521613832853026) internal successors, (1056), 699 states have internal predecessors, (1056), 254 states have call successors, (254), 6 states have call predecessors, (254), 6 states have return successors, (254), 249 states have call predecessors, (254), 254 states have call successors, (254) [2024-11-22 07:22:48,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 955 states to 955 states and 1564 transitions. [2024-11-22 07:22:48,015 INFO L78 Accepts]: Start accepts. Automaton has 955 states and 1564 transitions. Word has length 574 [2024-11-22 07:22:48,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 07:22:48,017 INFO L471 AbstractCegarLoop]: Abstraction has 955 states and 1564 transitions. [2024-11-22 07:22:48,017 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.4) internal successors, (117), 5 states have internal predecessors, (117), 1 states have call successors, (92), 1 states have call predecessors, (92), 1 states have return successors, (92), 1 states have call predecessors, (92), 1 states have call successors, (92) [2024-11-22 07:22:48,017 INFO L276 IsEmpty]: Start isEmpty. Operand 955 states and 1564 transitions. [2024-11-22 07:22:48,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 575 [2024-11-22 07:22:48,033 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 07:22:48,033 INFO L215 NwaCegarLoop]: trace histogram [92, 92, 92, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:22:48,033 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-22 07:22:48,033 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 07:22:48,034 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 07:22:48,034 INFO L85 PathProgramCache]: Analyzing trace with hash -518572583, now seen corresponding path program 1 times [2024-11-22 07:22:48,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 07:22:48,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135481593] [2024-11-22 07:22:48,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 07:22:48,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 07:22:48,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 07:22:48,423 INFO L134 CoverageAnalysis]: Checked inductivity of 16744 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16744 trivial. 0 not checked. [2024-11-22 07:22:48,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 07:22:48,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1135481593] [2024-11-22 07:22:48,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1135481593] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 07:22:48,426 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 07:22:48,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 07:22:48,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807251325] [2024-11-22 07:22:48,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 07:22:48,428 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 07:22:48,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 07:22:48,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 07:22:48,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-22 07:22:48,429 INFO L87 Difference]: Start difference. First operand 955 states and 1564 transitions. Second operand has 4 states, 4 states have (on average 29.25) internal successors, (117), 4 states have internal predecessors, (117), 1 states have call successors, (92), 1 states have call predecessors, (92), 1 states have return successors, (92), 1 states have call predecessors, (92), 1 states have call successors, (92) [2024-11-22 07:22:48,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 07:22:48,732 INFO L93 Difference]: Finished difference Result 3492 states and 5709 transitions. [2024-11-22 07:22:48,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 07:22:48,733 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.25) internal successors, (117), 4 states have internal predecessors, (117), 1 states have call successors, (92), 1 states have call predecessors, (92), 1 states have return successors, (92), 1 states have call predecessors, (92), 1 states have call successors, (92) Word has length 574 [2024-11-22 07:22:48,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 07:22:48,744 INFO L225 Difference]: With dead ends: 3492 [2024-11-22 07:22:48,745 INFO L226 Difference]: Without dead ends: 2540 [2024-11-22 07:22:48,748 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-22 07:22:48,749 INFO L432 NwaCegarLoop]: 390 mSDtfsCounter, 466 mSDsluCounter, 691 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 466 SdHoareTripleChecker+Valid, 1081 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-22 07:22:48,749 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [466 Valid, 1081 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-22 07:22:48,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2540 states. [2024-11-22 07:22:48,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2540 to 2524. [2024-11-22 07:22:48,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2524 states, 1951 states have (on average 1.5479241414659148) internal successors, (3020), 1968 states have internal predecessors, (3020), 554 states have call successors, (554), 18 states have call predecessors, (554), 18 states have return successors, (554), 537 states have call predecessors, (554), 554 states have call successors, (554) [2024-11-22 07:22:48,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2524 states to 2524 states and 4128 transitions. [2024-11-22 07:22:48,910 INFO L78 Accepts]: Start accepts. Automaton has 2524 states and 4128 transitions. Word has length 574 [2024-11-22 07:22:48,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 07:22:48,911 INFO L471 AbstractCegarLoop]: Abstraction has 2524 states and 4128 transitions. [2024-11-22 07:22:48,911 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.25) internal successors, (117), 4 states have internal predecessors, (117), 1 states have call successors, (92), 1 states have call predecessors, (92), 1 states have return successors, (92), 1 states have call predecessors, (92), 1 states have call successors, (92) [2024-11-22 07:22:48,911 INFO L276 IsEmpty]: Start isEmpty. Operand 2524 states and 4128 transitions. [2024-11-22 07:22:48,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 575 [2024-11-22 07:22:48,920 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 07:22:48,920 INFO L215 NwaCegarLoop]: trace histogram [92, 92, 92, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:22:48,920 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-22 07:22:48,921 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 07:22:48,922 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 07:22:48,922 INFO L85 PathProgramCache]: Analyzing trace with hash -571079069, now seen corresponding path program 1 times [2024-11-22 07:22:48,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 07:22:48,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1177474905] [2024-11-22 07:22:48,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 07:22:48,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 07:22:48,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 07:22:49,298 INFO L134 CoverageAnalysis]: Checked inductivity of 16744 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16744 trivial. 0 not checked. [2024-11-22 07:22:49,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 07:22:49,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1177474905] [2024-11-22 07:22:49,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1177474905] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 07:22:49,299 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 07:22:49,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 07:22:49,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188869178] [2024-11-22 07:22:49,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 07:22:49,300 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 07:22:49,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 07:22:49,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 07:22:49,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-22 07:22:49,301 INFO L87 Difference]: Start difference. First operand 2524 states and 4128 transitions. Second operand has 4 states, 4 states have (on average 29.25) internal successors, (117), 4 states have internal predecessors, (117), 1 states have call successors, (92), 1 states have call predecessors, (92), 1 states have return successors, (92), 1 states have call predecessors, (92), 1 states have call successors, (92) [2024-11-22 07:22:49,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 07:22:49,604 INFO L93 Difference]: Finished difference Result 6631 states and 10834 transitions. [2024-11-22 07:22:49,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 07:22:49,605 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.25) internal successors, (117), 4 states have internal predecessors, (117), 1 states have call successors, (92), 1 states have call predecessors, (92), 1 states have return successors, (92), 1 states have call predecessors, (92), 1 states have call successors, (92) Word has length 574 [2024-11-22 07:22:49,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 07:22:49,619 INFO L225 Difference]: With dead ends: 6631 [2024-11-22 07:22:49,619 INFO L226 Difference]: Without dead ends: 4110 [2024-11-22 07:22:49,624 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-22 07:22:49,624 INFO L432 NwaCegarLoop]: 621 mSDtfsCounter, 400 mSDsluCounter, 369 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 400 SdHoareTripleChecker+Valid, 990 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 07:22:49,625 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [400 Valid, 990 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 07:22:49,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4110 states. [2024-11-22 07:22:49,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4110 to 3331. [2024-11-22 07:22:49,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3331 states, 2586 states have (on average 1.5452436194895591) internal successors, (3996), 2609 states have internal predecessors, (3996), 718 states have call successors, (718), 26 states have call predecessors, (718), 26 states have return successors, (718), 695 states have call predecessors, (718), 718 states have call successors, (718) [2024-11-22 07:22:49,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3331 states to 3331 states and 5432 transitions. [2024-11-22 07:22:49,785 INFO L78 Accepts]: Start accepts. Automaton has 3331 states and 5432 transitions. Word has length 574 [2024-11-22 07:22:49,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 07:22:49,786 INFO L471 AbstractCegarLoop]: Abstraction has 3331 states and 5432 transitions. [2024-11-22 07:22:49,787 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.25) internal successors, (117), 4 states have internal predecessors, (117), 1 states have call successors, (92), 1 states have call predecessors, (92), 1 states have return successors, (92), 1 states have call predecessors, (92), 1 states have call successors, (92) [2024-11-22 07:22:49,787 INFO L276 IsEmpty]: Start isEmpty. Operand 3331 states and 5432 transitions. [2024-11-22 07:22:49,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 575 [2024-11-22 07:22:49,791 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 07:22:49,792 INFO L215 NwaCegarLoop]: trace histogram [92, 92, 92, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:22:49,792 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-22 07:22:49,792 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 07:22:49,792 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 07:22:49,793 INFO L85 PathProgramCache]: Analyzing trace with hash -127178395, now seen corresponding path program 1 times [2024-11-22 07:22:49,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 07:22:49,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849736177] [2024-11-22 07:22:49,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 07:22:49,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 07:22:49,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 07:22:50,106 INFO L134 CoverageAnalysis]: Checked inductivity of 16744 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16744 trivial. 0 not checked. [2024-11-22 07:22:50,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 07:22:50,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849736177] [2024-11-22 07:22:50,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [849736177] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 07:22:50,107 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 07:22:50,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 07:22:50,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122296104] [2024-11-22 07:22:50,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 07:22:50,108 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 07:22:50,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 07:22:50,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 07:22:50,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-22 07:22:50,109 INFO L87 Difference]: Start difference. First operand 3331 states and 5432 transitions. Second operand has 5 states, 5 states have (on average 23.4) internal successors, (117), 5 states have internal predecessors, (117), 1 states have call successors, (92), 1 states have call predecessors, (92), 1 states have return successors, (92), 1 states have call predecessors, (92), 1 states have call successors, (92) [2024-11-22 07:22:51,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 07:22:51,113 INFO L93 Difference]: Finished difference Result 11303 states and 18409 transitions. [2024-11-22 07:22:51,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 07:22:51,114 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 23.4) internal successors, (117), 5 states have internal predecessors, (117), 1 states have call successors, (92), 1 states have call predecessors, (92), 1 states have return successors, (92), 1 states have call predecessors, (92), 1 states have call successors, (92) Word has length 574 [2024-11-22 07:22:51,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 07:22:51,151 INFO L225 Difference]: With dead ends: 11303 [2024-11-22 07:22:51,151 INFO L226 Difference]: Without dead ends: 7975 [2024-11-22 07:22:51,163 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-22 07:22:51,164 INFO L432 NwaCegarLoop]: 651 mSDtfsCounter, 443 mSDsluCounter, 965 mSDsCounter, 0 mSdLazyCounter, 574 mSolverCounterSat, 119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 443 SdHoareTripleChecker+Valid, 1616 SdHoareTripleChecker+Invalid, 693 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 574 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-22 07:22:51,164 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [443 Valid, 1616 Invalid, 693 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [119 Valid, 574 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-22 07:22:51,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7975 states. [2024-11-22 07:22:51,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7975 to 7952. [2024-11-22 07:22:51,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7952 states, 6096 states have (on average 1.5346128608923884) internal successors, (9355), 6154 states have internal predecessors, (9355), 1793 states have call successors, (1793), 62 states have call predecessors, (1793), 62 states have return successors, (1793), 1735 states have call predecessors, (1793), 1793 states have call successors, (1793) [2024-11-22 07:22:51,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7952 states to 7952 states and 12941 transitions. [2024-11-22 07:22:51,582 INFO L78 Accepts]: Start accepts. Automaton has 7952 states and 12941 transitions. Word has length 574 [2024-11-22 07:22:51,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 07:22:51,582 INFO L471 AbstractCegarLoop]: Abstraction has 7952 states and 12941 transitions. [2024-11-22 07:22:51,583 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.4) internal successors, (117), 5 states have internal predecessors, (117), 1 states have call successors, (92), 1 states have call predecessors, (92), 1 states have return successors, (92), 1 states have call predecessors, (92), 1 states have call successors, (92) [2024-11-22 07:22:51,583 INFO L276 IsEmpty]: Start isEmpty. Operand 7952 states and 12941 transitions. [2024-11-22 07:22:51,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 575 [2024-11-22 07:22:51,635 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 07:22:51,635 INFO L215 NwaCegarLoop]: trace histogram [92, 92, 92, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:22:51,636 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-22 07:22:51,636 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 07:22:51,636 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 07:22:51,636 INFO L85 PathProgramCache]: Analyzing trace with hash -629503387, now seen corresponding path program 1 times [2024-11-22 07:22:51,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 07:22:51,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690865531] [2024-11-22 07:22:51,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 07:22:51,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 07:22:51,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 07:22:52,050 INFO L134 CoverageAnalysis]: Checked inductivity of 16744 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16744 trivial. 0 not checked. [2024-11-22 07:22:52,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 07:22:52,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [690865531] [2024-11-22 07:22:52,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [690865531] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 07:22:52,051 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 07:22:52,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 07:22:52,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377954828] [2024-11-22 07:22:52,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 07:22:52,052 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 07:22:52,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 07:22:52,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 07:22:52,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-22 07:22:52,053 INFO L87 Difference]: Start difference. First operand 7952 states and 12941 transitions. Second operand has 5 states, 5 states have (on average 23.4) internal successors, (117), 5 states have internal predecessors, (117), 1 states have call successors, (92), 1 states have call predecessors, (92), 1 states have return successors, (92), 1 states have call predecessors, (92), 1 states have call successors, (92) [2024-11-22 07:22:52,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 07:22:52,847 INFO L93 Difference]: Finished difference Result 18591 states and 30124 transitions. [2024-11-22 07:22:52,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-22 07:22:52,847 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 23.4) internal successors, (117), 5 states have internal predecessors, (117), 1 states have call successors, (92), 1 states have call predecessors, (92), 1 states have return successors, (92), 1 states have call predecessors, (92), 1 states have call successors, (92) Word has length 574 [2024-11-22 07:22:52,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 07:22:52,919 INFO L225 Difference]: With dead ends: 18591 [2024-11-22 07:22:52,920 INFO L226 Difference]: Without dead ends: 10642 [2024-11-22 07:22:52,945 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-22 07:22:52,946 INFO L432 NwaCegarLoop]: 616 mSDtfsCounter, 817 mSDsluCounter, 962 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 817 SdHoareTripleChecker+Valid, 1578 SdHoareTripleChecker+Invalid, 249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-22 07:22:52,946 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [817 Valid, 1578 Invalid, 249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-22 07:22:52,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10642 states. [2024-11-22 07:22:53,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10642 to 9784. [2024-11-22 07:22:53,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9784 states, 7468 states have (on average 1.5239689341189073) internal successors, (11381), 7540 states have internal predecessors, (11381), 2225 states have call successors, (2225), 90 states have call predecessors, (2225), 90 states have return successors, (2225), 2153 states have call predecessors, (2225), 2225 states have call successors, (2225) [2024-11-22 07:22:53,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9784 states to 9784 states and 15831 transitions. [2024-11-22 07:22:53,656 INFO L78 Accepts]: Start accepts. Automaton has 9784 states and 15831 transitions. Word has length 574 [2024-11-22 07:22:53,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 07:22:53,657 INFO L471 AbstractCegarLoop]: Abstraction has 9784 states and 15831 transitions. [2024-11-22 07:22:53,657 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.4) internal successors, (117), 5 states have internal predecessors, (117), 1 states have call successors, (92), 1 states have call predecessors, (92), 1 states have return successors, (92), 1 states have call predecessors, (92), 1 states have call successors, (92) [2024-11-22 07:22:53,657 INFO L276 IsEmpty]: Start isEmpty. Operand 9784 states and 15831 transitions. [2024-11-22 07:22:53,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 575 [2024-11-22 07:22:53,669 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 07:22:53,669 INFO L215 NwaCegarLoop]: trace histogram [92, 92, 92, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:22:53,669 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-22 07:22:53,670 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 07:22:53,670 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 07:22:53,670 INFO L85 PathProgramCache]: Analyzing trace with hash -982591769, now seen corresponding path program 1 times [2024-11-22 07:22:53,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 07:22:53,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973111315] [2024-11-22 07:22:53,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 07:22:53,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 07:22:53,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 07:22:53,996 INFO L134 CoverageAnalysis]: Checked inductivity of 16744 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16744 trivial. 0 not checked. [2024-11-22 07:22:53,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 07:22:53,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973111315] [2024-11-22 07:22:53,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [973111315] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 07:22:53,997 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 07:22:53,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 07:22:53,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032430511] [2024-11-22 07:22:53,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 07:22:53,998 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 07:22:53,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 07:22:53,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 07:22:53,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 07:22:53,999 INFO L87 Difference]: Start difference. First operand 9784 states and 15831 transitions. Second operand has 4 states, 4 states have (on average 29.25) internal successors, (117), 4 states have internal predecessors, (117), 1 states have call successors, (92), 1 states have call predecessors, (92), 1 states have return successors, (92), 1 states have call predecessors, (92), 1 states have call successors, (92) [2024-11-22 07:22:54,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 07:22:54,390 INFO L93 Difference]: Finished difference Result 19713 states and 31881 transitions. [2024-11-22 07:22:54,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 07:22:54,395 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.25) internal successors, (117), 4 states have internal predecessors, (117), 1 states have call successors, (92), 1 states have call predecessors, (92), 1 states have return successors, (92), 1 states have call predecessors, (92), 1 states have call successors, (92) Word has length 574 [2024-11-22 07:22:54,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 07:22:54,443 INFO L225 Difference]: With dead ends: 19713 [2024-11-22 07:22:54,444 INFO L226 Difference]: Without dead ends: 9932 [2024-11-22 07:22:54,470 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 07:22:54,472 INFO L432 NwaCegarLoop]: 416 mSDtfsCounter, 0 mSDsluCounter, 812 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1228 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 07:22:54,472 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1228 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 07:22:54,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9932 states. [2024-11-22 07:22:54,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9932 to 9932. [2024-11-22 07:22:54,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9932 states, 7616 states have (on average 1.5137867647058822) internal successors, (11529), 7688 states have internal predecessors, (11529), 2225 states have call successors, (2225), 90 states have call predecessors, (2225), 90 states have return successors, (2225), 2153 states have call predecessors, (2225), 2225 states have call successors, (2225) [2024-11-22 07:22:55,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9932 states to 9932 states and 15979 transitions. [2024-11-22 07:22:55,015 INFO L78 Accepts]: Start accepts. Automaton has 9932 states and 15979 transitions. Word has length 574 [2024-11-22 07:22:55,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 07:22:55,016 INFO L471 AbstractCegarLoop]: Abstraction has 9932 states and 15979 transitions. [2024-11-22 07:22:55,016 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.25) internal successors, (117), 4 states have internal predecessors, (117), 1 states have call successors, (92), 1 states have call predecessors, (92), 1 states have return successors, (92), 1 states have call predecessors, (92), 1 states have call successors, (92) [2024-11-22 07:22:55,016 INFO L276 IsEmpty]: Start isEmpty. Operand 9932 states and 15979 transitions. [2024-11-22 07:22:55,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 577 [2024-11-22 07:22:55,028 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 07:22:55,029 INFO L215 NwaCegarLoop]: trace histogram [92, 92, 92, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:22:55,029 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-22 07:22:55,029 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 07:22:55,030 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 07:22:55,030 INFO L85 PathProgramCache]: Analyzing trace with hash -1677198246, now seen corresponding path program 1 times [2024-11-22 07:22:55,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 07:22:55,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1253892029] [2024-11-22 07:22:55,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 07:22:55,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 07:22:55,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 07:22:55,416 INFO L134 CoverageAnalysis]: Checked inductivity of 16744 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16744 trivial. 0 not checked. [2024-11-22 07:22:55,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 07:22:55,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1253892029] [2024-11-22 07:22:55,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1253892029] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 07:22:55,416 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 07:22:55,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-22 07:22:55,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350641270] [2024-11-22 07:22:55,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 07:22:55,417 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 07:22:55,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 07:22:55,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 07:22:55,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-22 07:22:55,418 INFO L87 Difference]: Start difference. First operand 9932 states and 15979 transitions. Second operand has 6 states, 6 states have (on average 19.833333333333332) internal successors, (119), 6 states have internal predecessors, (119), 1 states have call successors, (92), 1 states have call predecessors, (92), 1 states have return successors, (92), 1 states have call predecessors, (92), 1 states have call successors, (92) [2024-11-22 07:22:57,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 07:22:57,320 INFO L93 Difference]: Finished difference Result 37729 states and 60461 transitions. [2024-11-22 07:22:57,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-22 07:22:57,321 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 19.833333333333332) internal successors, (119), 6 states have internal predecessors, (119), 1 states have call successors, (92), 1 states have call predecessors, (92), 1 states have return successors, (92), 1 states have call predecessors, (92), 1 states have call successors, (92) Word has length 576 [2024-11-22 07:22:57,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 07:22:57,429 INFO L225 Difference]: With dead ends: 37729 [2024-11-22 07:22:57,430 INFO L226 Difference]: Without dead ends: 27800 [2024-11-22 07:22:57,461 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-22 07:22:57,462 INFO L432 NwaCegarLoop]: 497 mSDtfsCounter, 394 mSDsluCounter, 1279 mSDsCounter, 0 mSdLazyCounter, 186 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 394 SdHoareTripleChecker+Valid, 1776 SdHoareTripleChecker+Invalid, 249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-22 07:22:57,462 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [394 Valid, 1776 Invalid, 249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 186 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-22 07:22:57,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27800 states. [2024-11-22 07:22:58,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27800 to 11996. [2024-11-22 07:22:58,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11996 states, 9182 states have (on average 1.5221084730995427) internal successors, (13976), 9272 states have internal predecessors, (13976), 2705 states have call successors, (2705), 108 states have call predecessors, (2705), 108 states have return successors, (2705), 2615 states have call predecessors, (2705), 2705 states have call successors, (2705) [2024-11-22 07:22:58,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11996 states to 11996 states and 19386 transitions. [2024-11-22 07:22:58,486 INFO L78 Accepts]: Start accepts. Automaton has 11996 states and 19386 transitions. Word has length 576 [2024-11-22 07:22:58,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 07:22:58,487 INFO L471 AbstractCegarLoop]: Abstraction has 11996 states and 19386 transitions. [2024-11-22 07:22:58,487 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.833333333333332) internal successors, (119), 6 states have internal predecessors, (119), 1 states have call successors, (92), 1 states have call predecessors, (92), 1 states have return successors, (92), 1 states have call predecessors, (92), 1 states have call successors, (92) [2024-11-22 07:22:58,487 INFO L276 IsEmpty]: Start isEmpty. Operand 11996 states and 19386 transitions. [2024-11-22 07:22:58,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 577 [2024-11-22 07:22:58,501 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 07:22:58,501 INFO L215 NwaCegarLoop]: trace histogram [92, 92, 92, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:22:58,501 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-22 07:22:58,501 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 07:22:58,502 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 07:22:58,502 INFO L85 PathProgramCache]: Analyzing trace with hash 1800120600, now seen corresponding path program 1 times [2024-11-22 07:22:58,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 07:22:58,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736118785] [2024-11-22 07:22:58,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 07:22:58,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 07:22:58,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 07:22:59,236 INFO L134 CoverageAnalysis]: Checked inductivity of 16744 backedges. 156 proven. 117 refuted. 0 times theorem prover too weak. 16471 trivial. 0 not checked. [2024-11-22 07:22:59,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 07:22:59,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1736118785] [2024-11-22 07:22:59,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1736118785] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 07:22:59,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [592985964] [2024-11-22 07:22:59,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 07:22:59,237 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 07:22:59,237 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 07:22:59,239 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 07:22:59,240 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-22 07:22:59,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 07:22:59,474 INFO L255 TraceCheckSpWp]: Trace formula consists of 1248 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-22 07:22:59,482 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 07:22:59,796 INFO L134 CoverageAnalysis]: Checked inductivity of 16744 backedges. 8307 proven. 117 refuted. 0 times theorem prover too weak. 8320 trivial. 0 not checked. [2024-11-22 07:22:59,796 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 07:23:00,229 INFO L134 CoverageAnalysis]: Checked inductivity of 16744 backedges. 156 proven. 117 refuted. 0 times theorem prover too weak. 16471 trivial. 0 not checked. [2024-11-22 07:23:00,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [592985964] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 07:23:00,230 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 07:23:00,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 14 [2024-11-22 07:23:00,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408978639] [2024-11-22 07:23:00,230 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 07:23:00,231 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-22 07:23:00,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 07:23:00,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-22 07:23:00,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2024-11-22 07:23:00,233 INFO L87 Difference]: Start difference. First operand 11996 states and 19386 transitions. Second operand has 14 states, 14 states have (on average 10.5) internal successors, (147), 14 states have internal predecessors, (147), 2 states have call successors, (131), 2 states have call predecessors, (131), 4 states have return successors, (132), 2 states have call predecessors, (132), 2 states have call successors, (132) [2024-11-22 07:23:03,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 07:23:03,670 INFO L93 Difference]: Finished difference Result 43555 states and 69758 transitions. [2024-11-22 07:23:03,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-22 07:23:03,671 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 10.5) internal successors, (147), 14 states have internal predecessors, (147), 2 states have call successors, (131), 2 states have call predecessors, (131), 4 states have return successors, (132), 2 states have call predecessors, (132), 2 states have call successors, (132) Word has length 576 [2024-11-22 07:23:03,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 07:23:03,780 INFO L225 Difference]: With dead ends: 43555 [2024-11-22 07:23:03,780 INFO L226 Difference]: Without dead ends: 31562 [2024-11-22 07:23:03,807 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1178 GetRequests, 1147 SyntacticMatches, 2 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=206, Invalid=724, Unknown=0, NotChecked=0, Total=930 [2024-11-22 07:23:03,808 INFO L432 NwaCegarLoop]: 399 mSDtfsCounter, 716 mSDsluCounter, 2301 mSDsCounter, 0 mSdLazyCounter, 1959 mSolverCounterSat, 381 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 770 SdHoareTripleChecker+Valid, 2700 SdHoareTripleChecker+Invalid, 2340 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 381 IncrementalHoareTripleChecker+Valid, 1959 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-22 07:23:03,808 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [770 Valid, 2700 Invalid, 2340 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [381 Valid, 1959 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-22 07:23:03,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31562 states. [2024-11-22 07:23:05,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31562 to 22498. [2024-11-22 07:23:05,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22498 states, 16927 states have (on average 1.4999704613930407) internal successors, (25390), 17109 states have internal predecessors, (25390), 5348 states have call successors, (5348), 222 states have call predecessors, (5348), 222 states have return successors, (5348), 5166 states have call predecessors, (5348), 5348 states have call successors, (5348) [2024-11-22 07:23:05,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22498 states to 22498 states and 36086 transitions. [2024-11-22 07:23:05,380 INFO L78 Accepts]: Start accepts. Automaton has 22498 states and 36086 transitions. Word has length 576 [2024-11-22 07:23:05,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 07:23:05,381 INFO L471 AbstractCegarLoop]: Abstraction has 22498 states and 36086 transitions. [2024-11-22 07:23:05,381 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 10.5) internal successors, (147), 14 states have internal predecessors, (147), 2 states have call successors, (131), 2 states have call predecessors, (131), 4 states have return successors, (132), 2 states have call predecessors, (132), 2 states have call successors, (132) [2024-11-22 07:23:05,381 INFO L276 IsEmpty]: Start isEmpty. Operand 22498 states and 36086 transitions. [2024-11-22 07:23:05,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 577 [2024-11-22 07:23:05,403 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 07:23:05,403 INFO L215 NwaCegarLoop]: trace histogram [92, 92, 92, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:23:05,413 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-22 07:23:05,604 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-22 07:23:05,605 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 07:23:05,605 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 07:23:05,605 INFO L85 PathProgramCache]: Analyzing trace with hash 1862160214, now seen corresponding path program 1 times [2024-11-22 07:23:05,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 07:23:05,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550492886] [2024-11-22 07:23:05,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 07:23:05,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 07:23:05,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 07:23:05,844 INFO L134 CoverageAnalysis]: Checked inductivity of 16744 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16744 trivial. 0 not checked. [2024-11-22 07:23:05,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 07:23:05,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550492886] [2024-11-22 07:23:05,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1550492886] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 07:23:05,845 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 07:23:05,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 07:23:05,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087917373] [2024-11-22 07:23:05,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 07:23:05,846 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 07:23:05,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 07:23:05,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 07:23:05,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-22 07:23:05,847 INFO L87 Difference]: Start difference. First operand 22498 states and 36086 transitions. Second operand has 5 states, 5 states have (on average 23.8) internal successors, (119), 5 states have internal predecessors, (119), 1 states have call successors, (92), 1 states have call predecessors, (92), 1 states have return successors, (92), 1 states have call predecessors, (92), 1 states have call successors, (92) [2024-11-22 07:23:09,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 07:23:09,274 INFO L93 Difference]: Finished difference Result 75079 states and 120260 transitions. [2024-11-22 07:23:09,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 07:23:09,274 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 23.8) internal successors, (119), 5 states have internal predecessors, (119), 1 states have call successors, (92), 1 states have call predecessors, (92), 1 states have return successors, (92), 1 states have call predecessors, (92), 1 states have call successors, (92) Word has length 576 [2024-11-22 07:23:09,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 07:23:09,691 INFO L225 Difference]: With dead ends: 75079 [2024-11-22 07:23:09,691 INFO L226 Difference]: Without dead ends: 52584 [2024-11-22 07:23:09,739 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-11-22 07:23:09,740 INFO L432 NwaCegarLoop]: 509 mSDtfsCounter, 597 mSDsluCounter, 642 mSDsCounter, 0 mSdLazyCounter, 281 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 597 SdHoareTripleChecker+Valid, 1151 SdHoareTripleChecker+Invalid, 374 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 281 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-22 07:23:09,740 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [597 Valid, 1151 Invalid, 374 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 281 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-22 07:23:09,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52584 states. [2024-11-22 07:23:12,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52584 to 47479. [2024-11-22 07:23:12,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47479 states, 36306 states have (on average 1.4996419324629537) internal successors, (54446), 36671 states have internal predecessors, (54446), 10726 states have call successors, (10726), 446 states have call predecessors, (10726), 446 states have return successors, (10726), 10361 states have call predecessors, (10726), 10726 states have call successors, (10726) [2024-11-22 07:23:12,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47479 states to 47479 states and 75898 transitions. [2024-11-22 07:23:12,944 INFO L78 Accepts]: Start accepts. Automaton has 47479 states and 75898 transitions. Word has length 576 [2024-11-22 07:23:12,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 07:23:12,945 INFO L471 AbstractCegarLoop]: Abstraction has 47479 states and 75898 transitions. [2024-11-22 07:23:12,945 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.8) internal successors, (119), 5 states have internal predecessors, (119), 1 states have call successors, (92), 1 states have call predecessors, (92), 1 states have return successors, (92), 1 states have call predecessors, (92), 1 states have call successors, (92) [2024-11-22 07:23:12,945 INFO L276 IsEmpty]: Start isEmpty. Operand 47479 states and 75898 transitions. [2024-11-22 07:23:12,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 577 [2024-11-22 07:23:12,976 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 07:23:12,976 INFO L215 NwaCegarLoop]: trace histogram [92, 92, 92, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:23:12,977 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-22 07:23:12,977 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 07:23:12,977 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 07:23:12,977 INFO L85 PathProgramCache]: Analyzing trace with hash -1749172138, now seen corresponding path program 1 times [2024-11-22 07:23:12,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 07:23:12,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635791596] [2024-11-22 07:23:12,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 07:23:12,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 07:23:13,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 07:23:13,608 INFO L134 CoverageAnalysis]: Checked inductivity of 16744 backedges. 177 proven. 96 refuted. 0 times theorem prover too weak. 16471 trivial. 0 not checked. [2024-11-22 07:23:13,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 07:23:13,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635791596] [2024-11-22 07:23:13,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1635791596] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 07:23:13,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [829682449] [2024-11-22 07:23:13,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 07:23:13,609 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 07:23:13,609 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 07:23:13,612 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 07:23:13,613 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-22 07:23:13,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 07:23:13,861 INFO L255 TraceCheckSpWp]: Trace formula consists of 1246 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-22 07:23:13,873 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 07:23:14,859 INFO L134 CoverageAnalysis]: Checked inductivity of 16744 backedges. 7761 proven. 96 refuted. 0 times theorem prover too weak. 8887 trivial. 0 not checked. [2024-11-22 07:23:14,860 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 07:23:15,406 INFO L134 CoverageAnalysis]: Checked inductivity of 16744 backedges. 177 proven. 96 refuted. 0 times theorem prover too weak. 16471 trivial. 0 not checked. [2024-11-22 07:23:15,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [829682449] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 07:23:15,407 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 07:23:15,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 7] total 16 [2024-11-22 07:23:15,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730894234] [2024-11-22 07:23:15,407 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 07:23:15,408 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-22 07:23:15,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 07:23:15,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-22 07:23:15,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2024-11-22 07:23:15,410 INFO L87 Difference]: Start difference. First operand 47479 states and 75898 transitions. Second operand has 16 states, 16 states have (on average 15.25) internal successors, (244), 16 states have internal predecessors, (244), 5 states have call successors, (276), 3 states have call predecessors, (276), 6 states have return successors, (276), 5 states have call predecessors, (276), 5 states have call successors, (276) [2024-11-22 07:23:20,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 07:23:20,282 INFO L93 Difference]: Finished difference Result 119578 states and 191244 transitions. [2024-11-22 07:23:20,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-22 07:23:20,282 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 15.25) internal successors, (244), 16 states have internal predecessors, (244), 5 states have call successors, (276), 3 states have call predecessors, (276), 6 states have return successors, (276), 5 states have call predecessors, (276), 5 states have call successors, (276) Word has length 576 [2024-11-22 07:23:20,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 07:23:20,528 INFO L225 Difference]: With dead ends: 119578 [2024-11-22 07:23:20,529 INFO L226 Difference]: Without dead ends: 72159 [2024-11-22 07:23:20,809 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1163 GetRequests, 1143 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=123, Invalid=339, Unknown=0, NotChecked=0, Total=462 [2024-11-22 07:23:20,810 INFO L432 NwaCegarLoop]: 313 mSDtfsCounter, 706 mSDsluCounter, 1892 mSDsCounter, 0 mSdLazyCounter, 1746 mSolverCounterSat, 152 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 856 SdHoareTripleChecker+Valid, 2205 SdHoareTripleChecker+Invalid, 1898 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 152 IncrementalHoareTripleChecker+Valid, 1746 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-22 07:23:20,810 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [856 Valid, 2205 Invalid, 1898 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [152 Valid, 1746 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-22 07:23:20,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72159 states. [2024-11-22 07:23:24,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72159 to 38934. [2024-11-22 07:23:24,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38934 states, 30165 states have (on average 1.5062821150339798) internal successors, (45437), 30450 states have internal predecessors, (45437), 8402 states have call successors, (8402), 366 states have call predecessors, (8402), 366 states have return successors, (8402), 8117 states have call predecessors, (8402), 8402 states have call successors, (8402) [2024-11-22 07:23:24,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38934 states to 38934 states and 62241 transitions. [2024-11-22 07:23:24,353 INFO L78 Accepts]: Start accepts. Automaton has 38934 states and 62241 transitions. Word has length 576 [2024-11-22 07:23:24,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 07:23:24,354 INFO L471 AbstractCegarLoop]: Abstraction has 38934 states and 62241 transitions. [2024-11-22 07:23:24,354 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 15.25) internal successors, (244), 16 states have internal predecessors, (244), 5 states have call successors, (276), 3 states have call predecessors, (276), 6 states have return successors, (276), 5 states have call predecessors, (276), 5 states have call successors, (276) [2024-11-22 07:23:24,354 INFO L276 IsEmpty]: Start isEmpty. Operand 38934 states and 62241 transitions. [2024-11-22 07:23:24,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 577 [2024-11-22 07:23:24,375 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 07:23:24,376 INFO L215 NwaCegarLoop]: trace histogram [92, 92, 92, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:23:24,386 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-22 07:23:24,576 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 07:23:24,577 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 07:23:24,578 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 07:23:24,578 INFO L85 PathProgramCache]: Analyzing trace with hash 847814998, now seen corresponding path program 1 times [2024-11-22 07:23:24,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 07:23:24,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015109329] [2024-11-22 07:23:24,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 07:23:24,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 07:23:24,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 07:23:25,531 INFO L134 CoverageAnalysis]: Checked inductivity of 16744 backedges. 156 proven. 117 refuted. 0 times theorem prover too weak. 16471 trivial. 0 not checked. [2024-11-22 07:23:25,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 07:23:25,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015109329] [2024-11-22 07:23:25,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1015109329] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 07:23:25,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [11932122] [2024-11-22 07:23:25,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 07:23:25,532 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 07:23:25,533 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 07:23:25,535 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 07:23:25,535 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-22 07:23:25,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 07:23:25,784 INFO L255 TraceCheckSpWp]: Trace formula consists of 1245 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-22 07:23:25,791 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 07:23:26,596 INFO L134 CoverageAnalysis]: Checked inductivity of 16744 backedges. 8307 proven. 117 refuted. 0 times theorem prover too weak. 8320 trivial. 0 not checked. [2024-11-22 07:23:26,597 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 07:23:27,346 INFO L134 CoverageAnalysis]: Checked inductivity of 16744 backedges. 156 proven. 117 refuted. 0 times theorem prover too weak. 16471 trivial. 0 not checked. [2024-11-22 07:23:27,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [11932122] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 07:23:27,346 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 07:23:27,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 10] total 23 [2024-11-22 07:23:27,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956473886] [2024-11-22 07:23:27,346 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 07:23:27,347 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-22 07:23:27,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 07:23:27,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-22 07:23:27,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=403, Unknown=0, NotChecked=0, Total=506 [2024-11-22 07:23:27,349 INFO L87 Difference]: Start difference. First operand 38934 states and 62241 transitions. Second operand has 23 states, 23 states have (on average 10.521739130434783) internal successors, (242), 23 states have internal predecessors, (242), 4 states have call successors, (276), 3 states have call predecessors, (276), 6 states have return successors, (276), 4 states have call predecessors, (276), 4 states have call successors, (276) [2024-11-22 07:23:35,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 07:23:35,888 INFO L93 Difference]: Finished difference Result 124940 states and 199812 transitions. [2024-11-22 07:23:35,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-11-22 07:23:35,889 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 10.521739130434783) internal successors, (242), 23 states have internal predecessors, (242), 4 states have call successors, (276), 3 states have call predecessors, (276), 6 states have return successors, (276), 4 states have call predecessors, (276), 4 states have call successors, (276) Word has length 576 [2024-11-22 07:23:35,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 07:23:36,189 INFO L225 Difference]: With dead ends: 124940 [2024-11-22 07:23:36,189 INFO L226 Difference]: Without dead ends: 86066 [2024-11-22 07:23:36,273 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1191 GetRequests, 1144 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 551 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=494, Invalid=1858, Unknown=0, NotChecked=0, Total=2352 [2024-11-22 07:23:36,274 INFO L432 NwaCegarLoop]: 703 mSDtfsCounter, 2775 mSDsluCounter, 4597 mSDsCounter, 0 mSdLazyCounter, 4852 mSolverCounterSat, 1536 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2971 SdHoareTripleChecker+Valid, 5300 SdHoareTripleChecker+Invalid, 6388 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1536 IncrementalHoareTripleChecker+Valid, 4852 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2024-11-22 07:23:36,274 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2971 Valid, 5300 Invalid, 6388 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1536 Valid, 4852 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2024-11-22 07:23:36,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86066 states. [2024-11-22 07:23:40,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86066 to 54620. [2024-11-22 07:23:40,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54620 states, 41559 states have (on average 1.494622103515484) internal successors, (62115), 41988 states have internal predecessors, (62115), 12512 states have call successors, (12512), 548 states have call predecessors, (12512), 548 states have return successors, (12512), 12083 states have call predecessors, (12512), 12512 states have call successors, (12512) [2024-11-22 07:23:40,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54620 states to 54620 states and 87139 transitions. [2024-11-22 07:23:41,027 INFO L78 Accepts]: Start accepts. Automaton has 54620 states and 87139 transitions. Word has length 576 [2024-11-22 07:23:41,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 07:23:41,028 INFO L471 AbstractCegarLoop]: Abstraction has 54620 states and 87139 transitions. [2024-11-22 07:23:41,028 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 10.521739130434783) internal successors, (242), 23 states have internal predecessors, (242), 4 states have call successors, (276), 3 states have call predecessors, (276), 6 states have return successors, (276), 4 states have call predecessors, (276), 4 states have call successors, (276) [2024-11-22 07:23:41,028 INFO L276 IsEmpty]: Start isEmpty. Operand 54620 states and 87139 transitions. [2024-11-22 07:23:41,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 578 [2024-11-22 07:23:41,055 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 07:23:41,055 INFO L215 NwaCegarLoop]: trace histogram [92, 92, 92, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:23:41,070 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-22 07:23:41,255 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 07:23:41,256 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 07:23:41,256 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 07:23:41,256 INFO L85 PathProgramCache]: Analyzing trace with hash 1051274377, now seen corresponding path program 1 times [2024-11-22 07:23:41,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 07:23:41,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [449380515] [2024-11-22 07:23:41,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 07:23:41,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 07:23:41,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 07:23:42,236 INFO L134 CoverageAnalysis]: Checked inductivity of 16744 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16744 trivial. 0 not checked. [2024-11-22 07:23:42,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 07:23:42,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [449380515] [2024-11-22 07:23:42,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [449380515] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 07:23:42,237 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 07:23:42,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-22 07:23:42,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372770079] [2024-11-22 07:23:42,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 07:23:42,238 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-22 07:23:42,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 07:23:42,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-22 07:23:42,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-11-22 07:23:42,239 INFO L87 Difference]: Start difference. First operand 54620 states and 87139 transitions. Second operand has 8 states, 8 states have (on average 15.0) internal successors, (120), 8 states have internal predecessors, (120), 1 states have call successors, (92), 1 states have call predecessors, (92), 1 states have return successors, (92), 1 states have call predecessors, (92), 1 states have call successors, (92) [2024-11-22 07:23:48,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 07:23:48,482 INFO L93 Difference]: Finished difference Result 128276 states and 204438 transitions. [2024-11-22 07:23:48,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-22 07:23:48,483 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 15.0) internal successors, (120), 8 states have internal predecessors, (120), 1 states have call successors, (92), 1 states have call predecessors, (92), 1 states have return successors, (92), 1 states have call predecessors, (92), 1 states have call successors, (92) Word has length 577 [2024-11-22 07:23:48,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 07:23:48,878 INFO L225 Difference]: With dead ends: 128276 [2024-11-22 07:23:48,878 INFO L226 Difference]: Without dead ends: 73716 [2024-11-22 07:23:48,970 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2024-11-22 07:23:48,971 INFO L432 NwaCegarLoop]: 525 mSDtfsCounter, 1997 mSDsluCounter, 2215 mSDsCounter, 0 mSdLazyCounter, 652 mSolverCounterSat, 486 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1997 SdHoareTripleChecker+Valid, 2740 SdHoareTripleChecker+Invalid, 1138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 486 IncrementalHoareTripleChecker+Valid, 652 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-22 07:23:48,971 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1997 Valid, 2740 Invalid, 1138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [486 Valid, 652 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-22 07:23:49,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73716 states. [2024-11-22 07:23:53,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73716 to 56353. [2024-11-22 07:23:53,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56353 states, 43324 states have (on average 1.4962145692918474) internal successors, (64822), 43752 states have internal predecessors, (64822), 12482 states have call successors, (12482), 546 states have call predecessors, (12482), 546 states have return successors, (12482), 12054 states have call predecessors, (12482), 12482 states have call successors, (12482) [2024-11-22 07:23:53,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56353 states to 56353 states and 89786 transitions. [2024-11-22 07:23:53,971 INFO L78 Accepts]: Start accepts. Automaton has 56353 states and 89786 transitions. Word has length 577 [2024-11-22 07:23:53,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 07:23:53,971 INFO L471 AbstractCegarLoop]: Abstraction has 56353 states and 89786 transitions. [2024-11-22 07:23:53,972 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.0) internal successors, (120), 8 states have internal predecessors, (120), 1 states have call successors, (92), 1 states have call predecessors, (92), 1 states have return successors, (92), 1 states have call predecessors, (92), 1 states have call successors, (92) [2024-11-22 07:23:53,972 INFO L276 IsEmpty]: Start isEmpty. Operand 56353 states and 89786 transitions. [2024-11-22 07:23:54,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 578 [2024-11-22 07:23:54,001 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 07:23:54,002 INFO L215 NwaCegarLoop]: trace histogram [92, 92, 92, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:23:54,002 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-22 07:23:54,002 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 07:23:54,002 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 07:23:54,002 INFO L85 PathProgramCache]: Analyzing trace with hash 1389845017, now seen corresponding path program 1 times [2024-11-22 07:23:54,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 07:23:54,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532292915] [2024-11-22 07:23:54,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 07:23:54,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 07:23:54,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 07:23:54,198 INFO L134 CoverageAnalysis]: Checked inductivity of 16744 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16744 trivial. 0 not checked. [2024-11-22 07:23:54,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 07:23:54,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532292915] [2024-11-22 07:23:54,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [532292915] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 07:23:54,199 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 07:23:54,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 07:23:54,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613995463] [2024-11-22 07:23:54,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 07:23:54,200 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 07:23:54,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 07:23:54,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 07:23:54,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-22 07:23:54,201 INFO L87 Difference]: Start difference. First operand 56353 states and 89786 transitions. Second operand has 4 states, 4 states have (on average 30.0) internal successors, (120), 4 states have internal predecessors, (120), 1 states have call successors, (92), 1 states have call predecessors, (92), 1 states have return successors, (92), 1 states have call predecessors, (92), 1 states have call successors, (92)