./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-cn_file-66.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3061b6dc Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-cn_file-66.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 366cd04e1cccaa3d248693408475f1d8f6198ae7da412e5cc3eb2ead8f221652 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-18 20:58:56,114 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-18 20:58:56,165 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-18 20:58:56,169 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-18 20:58:56,170 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-18 20:58:56,190 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-18 20:58:56,191 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-18 20:58:56,192 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-18 20:58:56,192 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-18 20:58:56,195 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-18 20:58:56,195 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-18 20:58:56,196 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-18 20:58:56,196 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-18 20:58:56,196 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-18 20:58:56,196 INFO L153 SettingsManager]: * Use SBE=true [2024-11-18 20:58:56,197 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-18 20:58:56,198 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-18 20:58:56,198 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-18 20:58:56,198 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-18 20:58:56,198 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-18 20:58:56,198 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-18 20:58:56,199 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-18 20:58:56,199 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-18 20:58:56,199 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-18 20:58:56,200 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-18 20:58:56,200 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-18 20:58:56,200 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-18 20:58:56,201 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-18 20:58:56,201 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-18 20:58:56,201 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-18 20:58:56,201 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-18 20:58:56,201 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-18 20:58:56,201 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 20:58:56,202 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-18 20:58:56,202 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-18 20:58:56,202 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-18 20:58:56,202 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-18 20:58:56,202 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-18 20:58:56,202 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-18 20:58:56,203 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-18 20:58:56,203 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-18 20:58:56,204 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-18 20:58:56,204 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 366cd04e1cccaa3d248693408475f1d8f6198ae7da412e5cc3eb2ead8f221652 [2024-11-18 20:58:56,404 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-18 20:58:56,427 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-18 20:58:56,429 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-18 20:58:56,430 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-18 20:58:56,430 INFO L274 PluginConnector]: CDTParser initialized [2024-11-18 20:58:56,431 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-cn_file-66.i [2024-11-18 20:58:57,600 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-18 20:58:57,778 INFO L384 CDTParser]: Found 1 translation units. [2024-11-18 20:58:57,778 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-cn_file-66.i [2024-11-18 20:58:57,792 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/781eb1670/f52695de77a344a7a87981ea01ef56f5/FLAG19c446f89 [2024-11-18 20:58:57,804 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/781eb1670/f52695de77a344a7a87981ea01ef56f5 [2024-11-18 20:58:57,806 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-18 20:58:57,808 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-18 20:58:57,809 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-18 20:58:57,810 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-18 20:58:57,814 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-18 20:58:57,814 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:58:57" (1/1) ... [2024-11-18 20:58:57,815 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12399d19 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:58:57, skipping insertion in model container [2024-11-18 20:58:57,815 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:58:57" (1/1) ... [2024-11-18 20:58:57,844 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-18 20:58:57,985 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_fillercodestructure_filler-pr-cn_file-66.i[919,932] [2024-11-18 20:58:58,054 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 20:58:58,068 INFO L200 MainTranslator]: Completed pre-run [2024-11-18 20:58:58,079 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_fillercodestructure_filler-pr-cn_file-66.i[919,932] [2024-11-18 20:58:58,106 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 20:58:58,121 INFO L204 MainTranslator]: Completed translation [2024-11-18 20:58:58,122 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:58:58 WrapperNode [2024-11-18 20:58:58,122 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-18 20:58:58,123 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-18 20:58:58,123 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-18 20:58:58,123 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-18 20:58:58,127 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:58:58" (1/1) ... [2024-11-18 20:58:58,137 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:58:58" (1/1) ... [2024-11-18 20:58:58,178 INFO L138 Inliner]: procedures = 26, calls = 57, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 253 [2024-11-18 20:58:58,179 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-18 20:58:58,180 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-18 20:58:58,180 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-18 20:58:58,180 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-18 20:58:58,192 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:58:58" (1/1) ... [2024-11-18 20:58:58,193 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:58:58" (1/1) ... [2024-11-18 20:58:58,195 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:58:58" (1/1) ... [2024-11-18 20:58:58,223 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-18 20:58:58,224 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:58:58" (1/1) ... [2024-11-18 20:58:58,224 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:58:58" (1/1) ... [2024-11-18 20:58:58,233 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:58:58" (1/1) ... [2024-11-18 20:58:58,236 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:58:58" (1/1) ... [2024-11-18 20:58:58,238 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:58:58" (1/1) ... [2024-11-18 20:58:58,240 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:58:58" (1/1) ... [2024-11-18 20:58:58,242 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-18 20:58:58,243 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-18 20:58:58,243 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-18 20:58:58,243 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-18 20:58:58,244 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:58:58" (1/1) ... [2024-11-18 20:58:58,251 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 20:58:58,259 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 20:58:58,272 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-18 20:58:58,277 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-18 20:58:58,310 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-18 20:58:58,310 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-18 20:58:58,310 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-18 20:58:58,310 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-18 20:58:58,310 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-18 20:58:58,310 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-18 20:58:58,383 INFO L238 CfgBuilder]: Building ICFG [2024-11-18 20:58:58,385 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-18 20:58:58,740 INFO L? ?]: Removed 18 outVars from TransFormulas that were not future-live. [2024-11-18 20:58:58,740 INFO L287 CfgBuilder]: Performing block encoding [2024-11-18 20:58:58,752 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-18 20:58:58,752 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-18 20:58:58,752 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:58:58 BoogieIcfgContainer [2024-11-18 20:58:58,752 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-18 20:58:58,754 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-18 20:58:58,754 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-18 20:58:58,756 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-18 20:58:58,757 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 08:58:57" (1/3) ... [2024-11-18 20:58:58,757 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@549885ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:58:58, skipping insertion in model container [2024-11-18 20:58:58,757 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:58:58" (2/3) ... [2024-11-18 20:58:58,757 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@549885ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:58:58, skipping insertion in model container [2024-11-18 20:58:58,757 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:58:58" (3/3) ... [2024-11-18 20:58:58,759 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodestructure_filler-pr-cn_file-66.i [2024-11-18 20:58:58,774 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-18 20:58:58,774 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-18 20:58:58,825 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-18 20:58:58,830 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;@447b1e52, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-18 20:58:58,830 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-18 20:58:58,833 INFO L276 IsEmpty]: Start isEmpty. Operand has 114 states, 67 states have (on average 1.4179104477611941) internal successors, (95), 68 states have internal predecessors, (95), 44 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2024-11-18 20:58:58,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2024-11-18 20:58:58,847 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 20:58:58,847 INFO L215 NwaCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 20:58:58,848 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 20:58:58,854 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 20:58:58,854 INFO L85 PathProgramCache]: Analyzing trace with hash -109430285, now seen corresponding path program 1 times [2024-11-18 20:58:58,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 20:58:58,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [858767323] [2024-11-18 20:58:58,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 20:58:58,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 20:58:58,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 20:58:59,209 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 3698 trivial. 0 not checked. [2024-11-18 20:58:59,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 20:58:59,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [858767323] [2024-11-18 20:58:59,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [858767323] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 20:58:59,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [850332725] [2024-11-18 20:58:59,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 20:58:59,212 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 20:58:59,212 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 20:58:59,213 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 20:58:59,215 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-18 20:58:59,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 20:58:59,378 INFO L255 TraceCheckSpWp]: Trace formula consists of 597 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-18 20:58:59,393 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 20:58:59,432 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 86 proven. 0 refuted. 0 times theorem prover too weak. 3698 trivial. 0 not checked. [2024-11-18 20:58:59,433 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 20:58:59,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [850332725] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 20:58:59,433 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 20:58:59,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-18 20:58:59,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273496304] [2024-11-18 20:58:59,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 20:58:59,440 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-18 20:58:59,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 20:58:59,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-18 20:58:59,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-18 20:58:59,461 INFO L87 Difference]: Start difference. First operand has 114 states, 67 states have (on average 1.4179104477611941) internal successors, (95), 68 states have internal predecessors, (95), 44 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) Second operand has 2 states, 2 states have (on average 27.5) internal successors, (55), 2 states have internal predecessors, (55), 2 states have call successors, (44), 2 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 2 states have call successors, (44) [2024-11-18 20:58:59,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 20:58:59,489 INFO L93 Difference]: Finished difference Result 221 states and 404 transitions. [2024-11-18 20:58:59,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-18 20:58:59,491 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 27.5) internal successors, (55), 2 states have internal predecessors, (55), 2 states have call successors, (44), 2 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 2 states have call successors, (44) Word has length 270 [2024-11-18 20:58:59,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 20:58:59,513 INFO L225 Difference]: With dead ends: 221 [2024-11-18 20:58:59,514 INFO L226 Difference]: Without dead ends: 110 [2024-11-18 20:58:59,518 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 271 GetRequests, 271 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-18 20:58:59,521 INFO L432 NwaCegarLoop]: 176 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, 176 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 20:58:59,523 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 176 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 20:58:59,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2024-11-18 20:58:59,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 110. [2024-11-18 20:58:59,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 64 states have (on average 1.375) internal successors, (88), 64 states have internal predecessors, (88), 44 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2024-11-18 20:58:59,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 176 transitions. [2024-11-18 20:58:59,591 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 176 transitions. Word has length 270 [2024-11-18 20:58:59,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 20:58:59,591 INFO L471 AbstractCegarLoop]: Abstraction has 110 states and 176 transitions. [2024-11-18 20:58:59,591 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 27.5) internal successors, (55), 2 states have internal predecessors, (55), 2 states have call successors, (44), 2 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 2 states have call successors, (44) [2024-11-18 20:58:59,592 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 176 transitions. [2024-11-18 20:58:59,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2024-11-18 20:58:59,596 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 20:58:59,597 INFO L215 NwaCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 20:58:59,611 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-18 20:58:59,797 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-18 20:58:59,797 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 20:58:59,798 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 20:58:59,798 INFO L85 PathProgramCache]: Analyzing trace with hash -1819629905, now seen corresponding path program 1 times [2024-11-18 20:58:59,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 20:58:59,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911329906] [2024-11-18 20:58:59,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 20:58:59,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 20:59:00,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 20:59:05,138 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3784 trivial. 0 not checked. [2024-11-18 20:59:05,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 20:59:05,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911329906] [2024-11-18 20:59:05,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [911329906] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 20:59:05,139 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 20:59:05,139 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2024-11-18 20:59:05,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147217508] [2024-11-18 20:59:05,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 20:59:05,141 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-18 20:59:05,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 20:59:05,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-18 20:59:05,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=171, Unknown=0, NotChecked=0, Total=240 [2024-11-18 20:59:05,142 INFO L87 Difference]: Start difference. First operand 110 states and 176 transitions. Second operand has 16 states, 16 states have (on average 3.3125) internal successors, (53), 16 states have internal predecessors, (53), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2024-11-18 20:59:06,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 20:59:06,138 INFO L93 Difference]: Finished difference Result 378 states and 585 transitions. [2024-11-18 20:59:06,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-18 20:59:06,139 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.3125) internal successors, (53), 16 states have internal predecessors, (53), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) Word has length 270 [2024-11-18 20:59:06,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 20:59:06,142 INFO L225 Difference]: With dead ends: 378 [2024-11-18 20:59:06,142 INFO L226 Difference]: Without dead ends: 271 [2024-11-18 20:59:06,143 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=91, Invalid=215, Unknown=0, NotChecked=0, Total=306 [2024-11-18 20:59:06,144 INFO L432 NwaCegarLoop]: 162 mSDtfsCounter, 344 mSDsluCounter, 877 mSDsCounter, 0 mSdLazyCounter, 434 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 344 SdHoareTripleChecker+Valid, 1039 SdHoareTripleChecker+Invalid, 449 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 434 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-18 20:59:06,144 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [344 Valid, 1039 Invalid, 449 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 434 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-18 20:59:06,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2024-11-18 20:59:06,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 180. [2024-11-18 20:59:06,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 129 states have (on average 1.4883720930232558) internal successors, (192), 130 states have internal predecessors, (192), 48 states have call successors, (48), 2 states have call predecessors, (48), 2 states have return successors, (48), 47 states have call predecessors, (48), 48 states have call successors, (48) [2024-11-18 20:59:06,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 288 transitions. [2024-11-18 20:59:06,171 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 288 transitions. Word has length 270 [2024-11-18 20:59:06,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 20:59:06,173 INFO L471 AbstractCegarLoop]: Abstraction has 180 states and 288 transitions. [2024-11-18 20:59:06,174 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.3125) internal successors, (53), 16 states have internal predecessors, (53), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2024-11-18 20:59:06,174 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 288 transitions. [2024-11-18 20:59:06,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2024-11-18 20:59:06,178 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 20:59:06,179 INFO L215 NwaCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 20:59:06,179 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-18 20:59:06,179 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 20:59:06,180 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 20:59:06,180 INFO L85 PathProgramCache]: Analyzing trace with hash -1821476947, now seen corresponding path program 1 times [2024-11-18 20:59:06,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 20:59:06,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [813134644] [2024-11-18 20:59:06,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 20:59:06,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 20:59:06,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 20:59:25,326 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3784 trivial. 0 not checked. [2024-11-18 20:59:25,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 20:59:25,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [813134644] [2024-11-18 20:59:25,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [813134644] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 20:59:25,327 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 20:59:25,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2024-11-18 20:59:25,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280179831] [2024-11-18 20:59:25,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 20:59:25,328 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-18 20:59:25,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 20:59:25,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-18 20:59:25,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2024-11-18 20:59:25,331 INFO L87 Difference]: Start difference. First operand 180 states and 288 transitions. Second operand has 15 states, 15 states have (on average 3.533333333333333) internal successors, (53), 15 states have internal predecessors, (53), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2024-11-18 20:59:26,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 20:59:26,222 INFO L93 Difference]: Finished difference Result 252 states and 382 transitions. [2024-11-18 20:59:26,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-18 20:59:26,222 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.533333333333333) internal successors, (53), 15 states have internal predecessors, (53), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) Word has length 270 [2024-11-18 20:59:26,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 20:59:26,226 INFO L225 Difference]: With dead ends: 252 [2024-11-18 20:59:26,226 INFO L226 Difference]: Without dead ends: 250 [2024-11-18 20:59:26,227 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2024-11-18 20:59:26,227 INFO L432 NwaCegarLoop]: 153 mSDtfsCounter, 207 mSDsluCounter, 995 mSDsCounter, 0 mSdLazyCounter, 375 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 207 SdHoareTripleChecker+Valid, 1148 SdHoareTripleChecker+Invalid, 376 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 375 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-18 20:59:26,228 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [207 Valid, 1148 Invalid, 376 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 375 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-18 20:59:26,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2024-11-18 20:59:26,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 185. [2024-11-18 20:59:26,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 134 states have (on average 1.4850746268656716) internal successors, (199), 135 states have internal predecessors, (199), 48 states have call successors, (48), 2 states have call predecessors, (48), 2 states have return successors, (48), 47 states have call predecessors, (48), 48 states have call successors, (48) [2024-11-18 20:59:26,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 295 transitions. [2024-11-18 20:59:26,251 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 295 transitions. Word has length 270 [2024-11-18 20:59:26,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 20:59:26,251 INFO L471 AbstractCegarLoop]: Abstraction has 185 states and 295 transitions. [2024-11-18 20:59:26,251 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.533333333333333) internal successors, (53), 15 states have internal predecessors, (53), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2024-11-18 20:59:26,252 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 295 transitions. [2024-11-18 20:59:26,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2024-11-18 20:59:26,254 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 20:59:26,254 INFO L215 NwaCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 20:59:26,254 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-18 20:59:26,254 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 20:59:26,255 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 20:59:26,255 INFO L85 PathProgramCache]: Analyzing trace with hash -1561464467, now seen corresponding path program 1 times [2024-11-18 20:59:26,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 20:59:26,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460911668] [2024-11-18 20:59:26,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 20:59:26,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 20:59:26,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 20:59:31,744 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3784 trivial. 0 not checked. [2024-11-18 20:59:31,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 20:59:31,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1460911668] [2024-11-18 20:59:31,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1460911668] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 20:59:31,745 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 20:59:31,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2024-11-18 20:59:31,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117742084] [2024-11-18 20:59:31,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 20:59:31,746 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-18 20:59:31,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 20:59:31,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-18 20:59:31,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=171, Unknown=0, NotChecked=0, Total=240 [2024-11-18 20:59:31,747 INFO L87 Difference]: Start difference. First operand 185 states and 295 transitions. Second operand has 16 states, 16 states have (on average 3.3125) internal successors, (53), 16 states have internal predecessors, (53), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2024-11-18 20:59:32,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 20:59:32,784 INFO L93 Difference]: Finished difference Result 280 states and 415 transitions. [2024-11-18 20:59:32,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-18 20:59:32,785 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.3125) internal successors, (53), 16 states have internal predecessors, (53), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) Word has length 270 [2024-11-18 20:59:32,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 20:59:32,787 INFO L225 Difference]: With dead ends: 280 [2024-11-18 20:59:32,787 INFO L226 Difference]: Without dead ends: 278 [2024-11-18 20:59:32,787 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=91, Invalid=215, Unknown=0, NotChecked=0, Total=306 [2024-11-18 20:59:32,788 INFO L432 NwaCegarLoop]: 174 mSDtfsCounter, 233 mSDsluCounter, 1191 mSDsCounter, 0 mSdLazyCounter, 469 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 233 SdHoareTripleChecker+Valid, 1365 SdHoareTripleChecker+Invalid, 469 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 469 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-18 20:59:32,788 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [233 Valid, 1365 Invalid, 469 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 469 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-18 20:59:32,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2024-11-18 20:59:32,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 193. [2024-11-18 20:59:32,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 142 states have (on average 1.4929577464788732) internal successors, (212), 143 states have internal predecessors, (212), 48 states have call successors, (48), 2 states have call predecessors, (48), 2 states have return successors, (48), 47 states have call predecessors, (48), 48 states have call successors, (48) [2024-11-18 20:59:32,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 308 transitions. [2024-11-18 20:59:32,801 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 308 transitions. Word has length 270 [2024-11-18 20:59:32,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 20:59:32,801 INFO L471 AbstractCegarLoop]: Abstraction has 193 states and 308 transitions. [2024-11-18 20:59:32,802 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.3125) internal successors, (53), 16 states have internal predecessors, (53), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2024-11-18 20:59:32,802 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 308 transitions. [2024-11-18 20:59:32,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2024-11-18 20:59:32,803 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 20:59:32,803 INFO L215 NwaCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 20:59:32,803 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-18 20:59:32,803 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 20:59:32,804 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 20:59:32,804 INFO L85 PathProgramCache]: Analyzing trace with hash -1563311509, now seen corresponding path program 1 times [2024-11-18 20:59:32,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 20:59:32,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580233754] [2024-11-18 20:59:32,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 20:59:32,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 20:59:32,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 20:59:36,084 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3784 trivial. 0 not checked. [2024-11-18 20:59:36,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 20:59:36,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580233754] [2024-11-18 20:59:36,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [580233754] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 20:59:36,085 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 20:59:36,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2024-11-18 20:59:36,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030099683] [2024-11-18 20:59:36,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 20:59:36,085 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-18 20:59:36,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 20:59:36,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-18 20:59:36,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2024-11-18 20:59:36,087 INFO L87 Difference]: Start difference. First operand 193 states and 308 transitions. Second operand has 15 states, 15 states have (on average 3.533333333333333) internal successors, (53), 15 states have internal predecessors, (53), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2024-11-18 20:59:36,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 20:59:36,784 INFO L93 Difference]: Finished difference Result 278 states and 413 transitions. [2024-11-18 20:59:36,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-18 20:59:36,785 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.533333333333333) internal successors, (53), 15 states have internal predecessors, (53), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) Word has length 270 [2024-11-18 20:59:36,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 20:59:36,787 INFO L225 Difference]: With dead ends: 278 [2024-11-18 20:59:36,787 INFO L226 Difference]: Without dead ends: 276 [2024-11-18 20:59:36,787 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2024-11-18 20:59:36,788 INFO L432 NwaCegarLoop]: 184 mSDtfsCounter, 223 mSDsluCounter, 1137 mSDsCounter, 0 mSdLazyCounter, 473 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 223 SdHoareTripleChecker+Valid, 1321 SdHoareTripleChecker+Invalid, 473 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 473 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-18 20:59:36,788 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [223 Valid, 1321 Invalid, 473 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 473 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-18 20:59:36,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2024-11-18 20:59:36,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 189. [2024-11-18 20:59:36,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 138 states have (on average 1.4927536231884058) internal successors, (206), 139 states have internal predecessors, (206), 48 states have call successors, (48), 2 states have call predecessors, (48), 2 states have return successors, (48), 47 states have call predecessors, (48), 48 states have call successors, (48) [2024-11-18 20:59:36,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 302 transitions. [2024-11-18 20:59:36,802 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 302 transitions. Word has length 270 [2024-11-18 20:59:36,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 20:59:36,803 INFO L471 AbstractCegarLoop]: Abstraction has 189 states and 302 transitions. [2024-11-18 20:59:36,803 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.533333333333333) internal successors, (53), 15 states have internal predecessors, (53), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2024-11-18 20:59:36,803 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 302 transitions. [2024-11-18 20:59:36,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2024-11-18 20:59:36,805 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 20:59:36,806 INFO L215 NwaCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 20:59:36,806 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-18 20:59:36,806 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 20:59:36,807 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 20:59:36,807 INFO L85 PathProgramCache]: Analyzing trace with hash 1454269037, now seen corresponding path program 1 times [2024-11-18 20:59:36,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 20:59:36,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [461458429] [2024-11-18 20:59:36,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 20:59:36,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 20:59:36,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 20:59:36,873 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3784 trivial. 0 not checked. [2024-11-18 20:59:36,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 20:59:36,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [461458429] [2024-11-18 20:59:36,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [461458429] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 20:59:36,875 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 20:59:36,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 20:59:36,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309869195] [2024-11-18 20:59:36,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 20:59:36,876 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 20:59:36,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 20:59:36,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 20:59:36,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 20:59:36,877 INFO L87 Difference]: Start difference. First operand 189 states and 302 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2024-11-18 20:59:36,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 20:59:36,922 INFO L93 Difference]: Finished difference Result 521 states and 836 transitions. [2024-11-18 20:59:36,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 20:59:36,923 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) Word has length 270 [2024-11-18 20:59:36,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 20:59:36,926 INFO L225 Difference]: With dead ends: 521 [2024-11-18 20:59:36,928 INFO L226 Difference]: Without dead ends: 335 [2024-11-18 20:59:36,929 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 20:59:36,929 INFO L432 NwaCegarLoop]: 330 mSDtfsCounter, 162 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 162 SdHoareTripleChecker+Valid, 492 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 20:59:36,931 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [162 Valid, 492 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 20:59:36,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2024-11-18 20:59:36,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 333. [2024-11-18 20:59:36,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 333 states, 232 states have (on average 1.4396551724137931) internal successors, (334), 234 states have internal predecessors, (334), 96 states have call successors, (96), 4 states have call predecessors, (96), 4 states have return successors, (96), 94 states have call predecessors, (96), 96 states have call successors, (96) [2024-11-18 20:59:36,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 333 states to 333 states and 526 transitions. [2024-11-18 20:59:36,963 INFO L78 Accepts]: Start accepts. Automaton has 333 states and 526 transitions. Word has length 270 [2024-11-18 20:59:36,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 20:59:36,967 INFO L471 AbstractCegarLoop]: Abstraction has 333 states and 526 transitions. [2024-11-18 20:59:36,967 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2024-11-18 20:59:36,967 INFO L276 IsEmpty]: Start isEmpty. Operand 333 states and 526 transitions. [2024-11-18 20:59:36,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2024-11-18 20:59:36,969 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 20:59:36,969 INFO L215 NwaCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 20:59:36,969 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-18 20:59:36,969 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 20:59:36,969 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 20:59:36,969 INFO L85 PathProgramCache]: Analyzing trace with hash -2139633681, now seen corresponding path program 1 times [2024-11-18 20:59:36,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 20:59:36,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068942082] [2024-11-18 20:59:36,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 20:59:36,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 20:59:36,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 20:59:37,089 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3784 trivial. 0 not checked. [2024-11-18 20:59:37,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 20:59:37,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068942082] [2024-11-18 20:59:37,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2068942082] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 20:59:37,090 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 20:59:37,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 20:59:37,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090008363] [2024-11-18 20:59:37,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 20:59:37,092 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 20:59:37,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 20:59:37,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 20:59:37,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 20:59:37,093 INFO L87 Difference]: Start difference. First operand 333 states and 526 transitions. Second operand has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2024-11-18 20:59:37,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 20:59:37,339 INFO L93 Difference]: Finished difference Result 965 states and 1510 transitions. [2024-11-18 20:59:37,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 20:59:37,340 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) Word has length 270 [2024-11-18 20:59:37,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 20:59:37,346 INFO L225 Difference]: With dead ends: 965 [2024-11-18 20:59:37,346 INFO L226 Difference]: Without dead ends: 635 [2024-11-18 20:59:37,348 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 [2024-11-18 20:59:37,348 INFO L432 NwaCegarLoop]: 204 mSDtfsCounter, 127 mSDsluCounter, 360 mSDsCounter, 0 mSdLazyCounter, 244 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 564 SdHoareTripleChecker+Invalid, 257 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 20:59:37,349 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [127 Valid, 564 Invalid, 257 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 244 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 20:59:37,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 635 states. [2024-11-18 20:59:37,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 635 to 584. [2024-11-18 20:59:37,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 584 states, 387 states have (on average 1.4108527131782946) internal successors, (546), 390 states have internal predecessors, (546), 188 states have call successors, (188), 8 states have call predecessors, (188), 8 states have return successors, (188), 185 states have call predecessors, (188), 188 states have call successors, (188) [2024-11-18 20:59:37,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 584 states to 584 states and 922 transitions. [2024-11-18 20:59:37,405 INFO L78 Accepts]: Start accepts. Automaton has 584 states and 922 transitions. Word has length 270 [2024-11-18 20:59:37,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 20:59:37,405 INFO L471 AbstractCegarLoop]: Abstraction has 584 states and 922 transitions. [2024-11-18 20:59:37,406 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2024-11-18 20:59:37,406 INFO L276 IsEmpty]: Start isEmpty. Operand 584 states and 922 transitions. [2024-11-18 20:59:37,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2024-11-18 20:59:37,407 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 20:59:37,407 INFO L215 NwaCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 20:59:37,407 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-18 20:59:37,408 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 20:59:37,408 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 20:59:37,408 INFO L85 PathProgramCache]: Analyzing trace with hash -1881468243, now seen corresponding path program 1 times [2024-11-18 20:59:37,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 20:59:37,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514498684] [2024-11-18 20:59:37,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 20:59:37,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 20:59:37,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 20:59:40,414 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3784 trivial. 0 not checked. [2024-11-18 20:59:40,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 20:59:40,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514498684] [2024-11-18 20:59:40,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1514498684] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 20:59:40,414 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 20:59:40,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-11-18 20:59:40,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012440376] [2024-11-18 20:59:40,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 20:59:40,415 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-18 20:59:40,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 20:59:40,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-18 20:59:40,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2024-11-18 20:59:40,416 INFO L87 Difference]: Start difference. First operand 584 states and 922 transitions. Second operand has 14 states, 14 states have (on average 3.7857142857142856) internal successors, (53), 14 states have internal predecessors, (53), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2024-11-18 20:59:41,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 20:59:41,299 INFO L93 Difference]: Finished difference Result 753 states and 1130 transitions. [2024-11-18 20:59:41,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-18 20:59:41,299 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.7857142857142856) internal successors, (53), 14 states have internal predecessors, (53), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) Word has length 270 [2024-11-18 20:59:41,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 20:59:41,305 INFO L225 Difference]: With dead ends: 753 [2024-11-18 20:59:41,305 INFO L226 Difference]: Without dead ends: 751 [2024-11-18 20:59:41,305 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=84, Invalid=156, Unknown=0, NotChecked=0, Total=240 [2024-11-18 20:59:41,306 INFO L432 NwaCegarLoop]: 203 mSDtfsCounter, 481 mSDsluCounter, 849 mSDsCounter, 0 mSdLazyCounter, 423 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 481 SdHoareTripleChecker+Valid, 1052 SdHoareTripleChecker+Invalid, 479 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 423 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-18 20:59:41,307 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [481 Valid, 1052 Invalid, 479 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 423 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-18 20:59:41,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 751 states. [2024-11-18 20:59:41,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 751 to 655. [2024-11-18 20:59:41,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 655 states, 447 states have (on average 1.400447427293065) internal successors, (626), 452 states have internal predecessors, (626), 196 states have call successors, (196), 11 states have call predecessors, (196), 11 states have return successors, (196), 191 states have call predecessors, (196), 196 states have call successors, (196) [2024-11-18 20:59:41,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 655 states to 655 states and 1018 transitions. [2024-11-18 20:59:41,364 INFO L78 Accepts]: Start accepts. Automaton has 655 states and 1018 transitions. Word has length 270 [2024-11-18 20:59:41,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 20:59:41,365 INFO L471 AbstractCegarLoop]: Abstraction has 655 states and 1018 transitions. [2024-11-18 20:59:41,365 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.7857142857142856) internal successors, (53), 14 states have internal predecessors, (53), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2024-11-18 20:59:41,365 INFO L276 IsEmpty]: Start isEmpty. Operand 655 states and 1018 transitions. [2024-11-18 20:59:41,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2024-11-18 20:59:41,366 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 20:59:41,367 INFO L215 NwaCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 20:59:41,367 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-18 20:59:41,367 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 20:59:41,367 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 20:59:41,367 INFO L85 PathProgramCache]: Analyzing trace with hash -1883315285, now seen corresponding path program 1 times [2024-11-18 20:59:41,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 20:59:41,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557495233] [2024-11-18 20:59:41,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 20:59:41,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 20:59:41,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 20:59:43,323 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3784 trivial. 0 not checked. [2024-11-18 20:59:43,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 20:59:43,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557495233] [2024-11-18 20:59:43,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [557495233] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 20:59:43,323 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 20:59:43,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-18 20:59:43,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167574300] [2024-11-18 20:59:43,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 20:59:43,324 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-18 20:59:43,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 20:59:43,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-18 20:59:43,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2024-11-18 20:59:43,325 INFO L87 Difference]: Start difference. First operand 655 states and 1018 transitions. Second operand has 12 states, 12 states have (on average 4.416666666666667) internal successors, (53), 12 states have internal predecessors, (53), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2024-11-18 20:59:44,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 20:59:44,103 INFO L93 Difference]: Finished difference Result 751 states and 1128 transitions. [2024-11-18 20:59:44,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-18 20:59:44,104 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.416666666666667) internal successors, (53), 12 states have internal predecessors, (53), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) Word has length 270 [2024-11-18 20:59:44,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 20:59:44,109 INFO L225 Difference]: With dead ends: 751 [2024-11-18 20:59:44,109 INFO L226 Difference]: Without dead ends: 749 [2024-11-18 20:59:44,110 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2024-11-18 20:59:44,110 INFO L432 NwaCegarLoop]: 223 mSDtfsCounter, 381 mSDsluCounter, 878 mSDsCounter, 0 mSdLazyCounter, 484 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 381 SdHoareTripleChecker+Valid, 1101 SdHoareTripleChecker+Invalid, 508 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 484 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-18 20:59:44,110 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [381 Valid, 1101 Invalid, 508 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 484 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-18 20:59:44,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 749 states. [2024-11-18 20:59:44,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 749 to 655. [2024-11-18 20:59:44,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 655 states, 447 states have (on average 1.400447427293065) internal successors, (626), 452 states have internal predecessors, (626), 196 states have call successors, (196), 11 states have call predecessors, (196), 11 states have return successors, (196), 191 states have call predecessors, (196), 196 states have call successors, (196) [2024-11-18 20:59:44,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 655 states to 655 states and 1018 transitions. [2024-11-18 20:59:44,179 INFO L78 Accepts]: Start accepts. Automaton has 655 states and 1018 transitions. Word has length 270 [2024-11-18 20:59:44,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 20:59:44,179 INFO L471 AbstractCegarLoop]: Abstraction has 655 states and 1018 transitions. [2024-11-18 20:59:44,180 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.416666666666667) internal successors, (53), 12 states have internal predecessors, (53), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2024-11-18 20:59:44,180 INFO L276 IsEmpty]: Start isEmpty. Operand 655 states and 1018 transitions. [2024-11-18 20:59:44,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2024-11-18 20:59:44,181 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 20:59:44,181 INFO L215 NwaCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 20:59:44,181 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-18 20:59:44,181 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 20:59:44,182 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 20:59:44,182 INFO L85 PathProgramCache]: Analyzing trace with hash 786393649, now seen corresponding path program 1 times [2024-11-18 20:59:44,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 20:59:44,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590112875] [2024-11-18 20:59:44,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 20:59:44,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 20:59:44,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 20:59:44,473 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3784 trivial. 0 not checked. [2024-11-18 20:59:44,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 20:59:44,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590112875] [2024-11-18 20:59:44,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1590112875] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 20:59:44,473 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 20:59:44,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 20:59:44,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2522584] [2024-11-18 20:59:44,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 20:59:44,474 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 20:59:44,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 20:59:44,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 20:59:44,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-18 20:59:44,475 INFO L87 Difference]: Start difference. First operand 655 states and 1018 transitions. Second operand has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 2 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 2 states have call predecessors, (44), 2 states have call successors, (44) [2024-11-18 20:59:44,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 20:59:44,722 INFO L93 Difference]: Finished difference Result 1205 states and 1855 transitions. [2024-11-18 20:59:44,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 20:59:44,723 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 2 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 2 states have call predecessors, (44), 2 states have call successors, (44) Word has length 270 [2024-11-18 20:59:44,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 20:59:44,728 INFO L225 Difference]: With dead ends: 1205 [2024-11-18 20:59:44,728 INFO L226 Difference]: Without dead ends: 642 [2024-11-18 20:59:44,731 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-18 20:59:44,732 INFO L432 NwaCegarLoop]: 184 mSDtfsCounter, 220 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 233 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 220 SdHoareTripleChecker+Valid, 336 SdHoareTripleChecker+Invalid, 246 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 20:59:44,733 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [220 Valid, 336 Invalid, 246 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 233 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 20:59:44,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 642 states. [2024-11-18 20:59:44,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 642 to 627. [2024-11-18 20:59:44,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 627 states, 413 states have (on average 1.3486682808716708) internal successors, (557), 418 states have internal predecessors, (557), 200 states have call successors, (200), 13 states have call predecessors, (200), 13 states have return successors, (200), 195 states have call predecessors, (200), 200 states have call successors, (200) [2024-11-18 20:59:44,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 627 states to 627 states and 957 transitions. [2024-11-18 20:59:44,782 INFO L78 Accepts]: Start accepts. Automaton has 627 states and 957 transitions. Word has length 270 [2024-11-18 20:59:44,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 20:59:44,782 INFO L471 AbstractCegarLoop]: Abstraction has 627 states and 957 transitions. [2024-11-18 20:59:44,783 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 2 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 2 states have call predecessors, (44), 2 states have call successors, (44) [2024-11-18 20:59:44,783 INFO L276 IsEmpty]: Start isEmpty. Operand 627 states and 957 transitions. [2024-11-18 20:59:44,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2024-11-18 20:59:44,784 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 20:59:44,784 INFO L215 NwaCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 20:59:44,784 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-18 20:59:44,784 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 20:59:44,785 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 20:59:44,785 INFO L85 PathProgramCache]: Analyzing trace with hash -1626945710, now seen corresponding path program 1 times [2024-11-18 20:59:44,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 20:59:44,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819827782] [2024-11-18 20:59:44,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 20:59:44,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 20:59:44,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 20:59:48,381 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3784 trivial. 0 not checked. [2024-11-18 20:59:48,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 20:59:48,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [819827782] [2024-11-18 20:59:48,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [819827782] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 20:59:48,382 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 20:59:48,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2024-11-18 20:59:48,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398124910] [2024-11-18 20:59:48,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 20:59:48,382 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-18 20:59:48,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 20:59:48,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-18 20:59:48,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=178, Unknown=0, NotChecked=0, Total=272 [2024-11-18 20:59:48,383 INFO L87 Difference]: Start difference. First operand 627 states and 957 transitions. Second operand has 17 states, 17 states have (on average 3.176470588235294) internal successors, (54), 17 states have internal predecessors, (54), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2024-11-18 20:59:49,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 20:59:49,709 INFO L93 Difference]: Finished difference Result 1235 states and 1867 transitions. [2024-11-18 20:59:49,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-18 20:59:49,710 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.176470588235294) internal successors, (54), 17 states have internal predecessors, (54), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) Word has length 271 [2024-11-18 20:59:49,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 20:59:49,714 INFO L225 Difference]: With dead ends: 1235 [2024-11-18 20:59:49,714 INFO L226 Difference]: Without dead ends: 916 [2024-11-18 20:59:49,715 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=120, Invalid=222, Unknown=0, NotChecked=0, Total=342 [2024-11-18 20:59:49,715 INFO L432 NwaCegarLoop]: 211 mSDtfsCounter, 507 mSDsluCounter, 963 mSDsCounter, 0 mSdLazyCounter, 429 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 507 SdHoareTripleChecker+Valid, 1174 SdHoareTripleChecker+Invalid, 463 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 429 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-18 20:59:49,716 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [507 Valid, 1174 Invalid, 463 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 429 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-18 20:59:49,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 916 states. [2024-11-18 20:59:49,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 916 to 671. [2024-11-18 20:59:49,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 671 states, 459 states have (on average 1.3856209150326797) internal successors, (636), 463 states have internal predecessors, (636), 196 states have call successors, (196), 15 states have call predecessors, (196), 15 states have return successors, (196), 192 states have call predecessors, (196), 196 states have call successors, (196) [2024-11-18 20:59:49,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 671 states to 671 states and 1028 transitions. [2024-11-18 20:59:49,767 INFO L78 Accepts]: Start accepts. Automaton has 671 states and 1028 transitions. Word has length 271 [2024-11-18 20:59:49,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 20:59:49,768 INFO L471 AbstractCegarLoop]: Abstraction has 671 states and 1028 transitions. [2024-11-18 20:59:49,768 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.176470588235294) internal successors, (54), 17 states have internal predecessors, (54), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2024-11-18 20:59:49,768 INFO L276 IsEmpty]: Start isEmpty. Operand 671 states and 1028 transitions. [2024-11-18 20:59:49,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2024-11-18 20:59:49,769 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 20:59:49,770 INFO L215 NwaCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 20:59:49,770 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-18 20:59:49,770 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 20:59:49,770 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 20:59:49,770 INFO L85 PathProgramCache]: Analyzing trace with hash -1628792752, now seen corresponding path program 1 times [2024-11-18 20:59:49,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 20:59:49,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560060212] [2024-11-18 20:59:49,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 20:59:49,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 20:59:49,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 21:00:10,069 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3784 trivial. 0 not checked. [2024-11-18 21:00:10,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 21:00:10,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560060212] [2024-11-18 21:00:10,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [560060212] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 21:00:10,069 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 21:00:10,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2024-11-18 21:00:10,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123499481] [2024-11-18 21:00:10,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 21:00:10,070 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-18 21:00:10,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 21:00:10,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-18 21:00:10,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=177, Unknown=0, NotChecked=0, Total=240 [2024-11-18 21:00:10,071 INFO L87 Difference]: Start difference. First operand 671 states and 1028 transitions. Second operand has 16 states, 16 states have (on average 3.375) internal successors, (54), 16 states have internal predecessors, (54), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2024-11-18 21:00:12,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 21:00:12,218 INFO L93 Difference]: Finished difference Result 925 states and 1378 transitions. [2024-11-18 21:00:12,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-18 21:00:12,219 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.375) internal successors, (54), 16 states have internal predecessors, (54), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) Word has length 271 [2024-11-18 21:00:12,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 21:00:12,223 INFO L225 Difference]: With dead ends: 925 [2024-11-18 21:00:12,223 INFO L226 Difference]: Without dead ends: 923 [2024-11-18 21:00:12,223 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=221, Invalid=535, Unknown=0, NotChecked=0, Total=756 [2024-11-18 21:00:12,223 INFO L432 NwaCegarLoop]: 217 mSDtfsCounter, 691 mSDsluCounter, 1104 mSDsCounter, 0 mSdLazyCounter, 409 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 691 SdHoareTripleChecker+Valid, 1321 SdHoareTripleChecker+Invalid, 466 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 409 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-18 21:00:12,224 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [691 Valid, 1321 Invalid, 466 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 409 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-18 21:00:12,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 923 states. [2024-11-18 21:00:12,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 923 to 676. [2024-11-18 21:00:12,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 676 states, 464 states have (on average 1.3857758620689655) internal successors, (643), 468 states have internal predecessors, (643), 196 states have call successors, (196), 15 states have call predecessors, (196), 15 states have return successors, (196), 192 states have call predecessors, (196), 196 states have call successors, (196) [2024-11-18 21:00:12,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 676 states to 676 states and 1035 transitions. [2024-11-18 21:00:12,278 INFO L78 Accepts]: Start accepts. Automaton has 676 states and 1035 transitions. Word has length 271 [2024-11-18 21:00:12,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 21:00:12,278 INFO L471 AbstractCegarLoop]: Abstraction has 676 states and 1035 transitions. [2024-11-18 21:00:12,279 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.375) internal successors, (54), 16 states have internal predecessors, (54), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2024-11-18 21:00:12,279 INFO L276 IsEmpty]: Start isEmpty. Operand 676 states and 1035 transitions. [2024-11-18 21:00:12,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2024-11-18 21:00:12,280 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 21:00:12,280 INFO L215 NwaCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 21:00:12,280 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-18 21:00:12,280 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 21:00:12,281 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 21:00:12,281 INFO L85 PathProgramCache]: Analyzing trace with hash -1368780272, now seen corresponding path program 1 times [2024-11-18 21:00:12,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 21:00:12,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607183994] [2024-11-18 21:00:12,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 21:00:12,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 21:00:12,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 21:00:17,853 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3784 trivial. 0 not checked. [2024-11-18 21:00:17,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 21:00:17,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1607183994] [2024-11-18 21:00:17,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1607183994] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 21:00:17,854 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 21:00:17,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2024-11-18 21:00:17,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283032458] [2024-11-18 21:00:17,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 21:00:17,855 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-18 21:00:17,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 21:00:17,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-18 21:00:17,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=178, Unknown=0, NotChecked=0, Total=272 [2024-11-18 21:00:17,855 INFO L87 Difference]: Start difference. First operand 676 states and 1035 transitions. Second operand has 17 states, 17 states have (on average 3.176470588235294) internal successors, (54), 17 states have internal predecessors, (54), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2024-11-18 21:00:19,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 21:00:19,328 INFO L93 Difference]: Finished difference Result 882 states and 1322 transitions. [2024-11-18 21:00:19,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-18 21:00:19,329 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.176470588235294) internal successors, (54), 17 states have internal predecessors, (54), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) Word has length 271 [2024-11-18 21:00:19,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 21:00:19,332 INFO L225 Difference]: With dead ends: 882 [2024-11-18 21:00:19,332 INFO L226 Difference]: Without dead ends: 880 [2024-11-18 21:00:19,333 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=120, Invalid=222, Unknown=0, NotChecked=0, Total=342 [2024-11-18 21:00:19,333 INFO L432 NwaCegarLoop]: 223 mSDtfsCounter, 451 mSDsluCounter, 1105 mSDsCounter, 0 mSdLazyCounter, 409 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 451 SdHoareTripleChecker+Valid, 1328 SdHoareTripleChecker+Invalid, 430 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 409 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-18 21:00:19,333 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [451 Valid, 1328 Invalid, 430 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 409 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-18 21:00:19,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 880 states. [2024-11-18 21:00:19,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 880 to 684. [2024-11-18 21:00:19,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 684 states, 472 states have (on average 1.3898305084745763) internal successors, (656), 476 states have internal predecessors, (656), 196 states have call successors, (196), 15 states have call predecessors, (196), 15 states have return successors, (196), 192 states have call predecessors, (196), 196 states have call successors, (196) [2024-11-18 21:00:19,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 684 states to 684 states and 1048 transitions. [2024-11-18 21:00:19,386 INFO L78 Accepts]: Start accepts. Automaton has 684 states and 1048 transitions. Word has length 271 [2024-11-18 21:00:19,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 21:00:19,387 INFO L471 AbstractCegarLoop]: Abstraction has 684 states and 1048 transitions. [2024-11-18 21:00:19,387 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.176470588235294) internal successors, (54), 17 states have internal predecessors, (54), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2024-11-18 21:00:19,387 INFO L276 IsEmpty]: Start isEmpty. Operand 684 states and 1048 transitions. [2024-11-18 21:00:19,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2024-11-18 21:00:19,388 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 21:00:19,388 INFO L215 NwaCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 21:00:19,389 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-18 21:00:19,389 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 21:00:19,389 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 21:00:19,389 INFO L85 PathProgramCache]: Analyzing trace with hash -1370627314, now seen corresponding path program 1 times [2024-11-18 21:00:19,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 21:00:19,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977313179] [2024-11-18 21:00:19,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 21:00:19,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 21:00:19,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 21:00:22,480 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3784 trivial. 0 not checked. [2024-11-18 21:00:22,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 21:00:22,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977313179] [2024-11-18 21:00:22,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [977313179] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 21:00:22,480 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 21:00:22,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2024-11-18 21:00:22,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726310254] [2024-11-18 21:00:22,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 21:00:22,481 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-18 21:00:22,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 21:00:22,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-18 21:00:22,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=157, Unknown=0, NotChecked=0, Total=240 [2024-11-18 21:00:22,482 INFO L87 Difference]: Start difference. First operand 684 states and 1048 transitions. Second operand has 16 states, 16 states have (on average 3.375) internal successors, (54), 16 states have internal predecessors, (54), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2024-11-18 21:00:23,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 21:00:23,275 INFO L93 Difference]: Finished difference Result 880 states and 1320 transitions. [2024-11-18 21:00:23,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-18 21:00:23,275 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.375) internal successors, (54), 16 states have internal predecessors, (54), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) Word has length 271 [2024-11-18 21:00:23,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 21:00:23,279 INFO L225 Difference]: With dead ends: 880 [2024-11-18 21:00:23,279 INFO L226 Difference]: Without dead ends: 878 [2024-11-18 21:00:23,280 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=109, Invalid=197, Unknown=0, NotChecked=0, Total=306 [2024-11-18 21:00:23,280 INFO L432 NwaCegarLoop]: 233 mSDtfsCounter, 490 mSDsluCounter, 1039 mSDsCounter, 0 mSdLazyCounter, 483 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 490 SdHoareTripleChecker+Valid, 1272 SdHoareTripleChecker+Invalid, 506 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 483 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-18 21:00:23,296 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [490 Valid, 1272 Invalid, 506 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 483 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-18 21:00:23,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 878 states. [2024-11-18 21:00:23,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 878 to 680. [2024-11-18 21:00:23,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 680 states, 468 states have (on average 1.3888888888888888) internal successors, (650), 472 states have internal predecessors, (650), 196 states have call successors, (196), 15 states have call predecessors, (196), 15 states have return successors, (196), 192 states have call predecessors, (196), 196 states have call successors, (196) [2024-11-18 21:00:23,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 680 states to 680 states and 1042 transitions. [2024-11-18 21:00:23,354 INFO L78 Accepts]: Start accepts. Automaton has 680 states and 1042 transitions. Word has length 271 [2024-11-18 21:00:23,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 21:00:23,355 INFO L471 AbstractCegarLoop]: Abstraction has 680 states and 1042 transitions. [2024-11-18 21:00:23,355 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.375) internal successors, (54), 16 states have internal predecessors, (54), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2024-11-18 21:00:23,355 INFO L276 IsEmpty]: Start isEmpty. Operand 680 states and 1042 transitions. [2024-11-18 21:00:23,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2024-11-18 21:00:23,356 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 21:00:23,356 INFO L215 NwaCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 21:00:23,356 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-18 21:00:23,357 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 21:00:23,357 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 21:00:23,357 INFO L85 PathProgramCache]: Analyzing trace with hash -1688784048, now seen corresponding path program 1 times [2024-11-18 21:00:23,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 21:00:23,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020898252] [2024-11-18 21:00:23,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 21:00:23,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 21:00:23,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 21:00:23,432 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3784 trivial. 0 not checked. [2024-11-18 21:00:23,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 21:00:23,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020898252] [2024-11-18 21:00:23,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1020898252] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 21:00:23,432 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 21:00:23,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 21:00:23,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905533133] [2024-11-18 21:00:23,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 21:00:23,433 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 21:00:23,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 21:00:23,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 21:00:23,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 21:00:23,434 INFO L87 Difference]: Start difference. First operand 680 states and 1042 transitions. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2024-11-18 21:00:23,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 21:00:23,628 INFO L93 Difference]: Finished difference Result 1474 states and 2255 transitions. [2024-11-18 21:00:23,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 21:00:23,628 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) Word has length 271 [2024-11-18 21:00:23,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 21:00:23,632 INFO L225 Difference]: With dead ends: 1474 [2024-11-18 21:00:23,633 INFO L226 Difference]: Without dead ends: 886 [2024-11-18 21:00:23,634 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 [2024-11-18 21:00:23,635 INFO L432 NwaCegarLoop]: 225 mSDtfsCounter, 151 mSDsluCounter, 383 mSDsCounter, 0 mSdLazyCounter, 251 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 608 SdHoareTripleChecker+Invalid, 264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 251 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 21:00:23,635 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [151 Valid, 608 Invalid, 264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 251 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 21:00:23,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 886 states. [2024-11-18 21:00:23,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 886 to 854. [2024-11-18 21:00:23,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 854 states, 588 states have (on average 1.3928571428571428) internal successors, (819), 593 states have internal predecessors, (819), 246 states have call successors, (246), 19 states have call predecessors, (246), 19 states have return successors, (246), 241 states have call predecessors, (246), 246 states have call successors, (246) [2024-11-18 21:00:23,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 854 states to 854 states and 1311 transitions. [2024-11-18 21:00:23,696 INFO L78 Accepts]: Start accepts. Automaton has 854 states and 1311 transitions. Word has length 271 [2024-11-18 21:00:23,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 21:00:23,697 INFO L471 AbstractCegarLoop]: Abstraction has 854 states and 1311 transitions. [2024-11-18 21:00:23,697 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2024-11-18 21:00:23,697 INFO L276 IsEmpty]: Start isEmpty. Operand 854 states and 1311 transitions. [2024-11-18 21:00:23,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2024-11-18 21:00:23,698 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 21:00:23,698 INFO L215 NwaCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 21:00:23,698 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-18 21:00:23,699 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 21:00:23,699 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 21:00:23,699 INFO L85 PathProgramCache]: Analyzing trace with hash 979077844, now seen corresponding path program 1 times [2024-11-18 21:00:23,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 21:00:23,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2053708372] [2024-11-18 21:00:23,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 21:00:23,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 21:00:23,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat