./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-50.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 803cd42f Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-50.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 6b45ccb3e1d6d85a9c8f7f52288c3291e482bbcbd2ab4e741715d19987b56944 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-803cd42-m [2024-11-22 07:24:06,556 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-22 07:24:06,622 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-22 07:24:06,628 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-22 07:24:06,628 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-22 07:24:06,649 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-22 07:24:06,651 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-22 07:24:06,651 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-22 07:24:06,652 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-22 07:24:06,653 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-22 07:24:06,653 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-22 07:24:06,654 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-22 07:24:06,654 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-22 07:24:06,654 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-22 07:24:06,655 INFO L153 SettingsManager]: * Use SBE=true [2024-11-22 07:24:06,656 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-22 07:24:06,656 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-22 07:24:06,657 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-22 07:24:06,657 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-22 07:24:06,659 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-22 07:24:06,660 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-22 07:24:06,660 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-22 07:24:06,660 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-22 07:24:06,660 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-22 07:24:06,661 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-22 07:24:06,661 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-22 07:24:06,661 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-22 07:24:06,661 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-22 07:24:06,661 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-22 07:24:06,661 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-22 07:24:06,662 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-22 07:24:06,662 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-22 07:24:06,662 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 07:24:06,662 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-22 07:24:06,662 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-22 07:24:06,662 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-22 07:24:06,663 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-22 07:24:06,663 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-22 07:24:06,663 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-22 07:24:06,663 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-22 07:24:06,663 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-22 07:24:06,665 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-22 07:24:06,665 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6b45ccb3e1d6d85a9c8f7f52288c3291e482bbcbd2ab4e741715d19987b56944 [2024-11-22 07:24:06,895 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-22 07:24:06,912 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-22 07:24:06,915 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-22 07:24:06,916 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-22 07:24:06,917 INFO L274 PluginConnector]: CDTParser initialized [2024-11-22 07:24:06,918 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-50.i [2024-11-22 07:24:08,427 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-22 07:24:08,710 INFO L384 CDTParser]: Found 1 translation units. [2024-11-22 07:24:08,711 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-50.i [2024-11-22 07:24:08,726 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0543b3485/d116f1f94e1c46d09a4cce6aba44d999/FLAG063eafdf6 [2024-11-22 07:24:09,006 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0543b3485/d116f1f94e1c46d09a4cce6aba44d999 [2024-11-22 07:24:09,008 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-22 07:24:09,010 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-22 07:24:09,012 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-22 07:24:09,012 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-22 07:24:09,016 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-22 07:24:09,017 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 07:24:09" (1/1) ... [2024-11-22 07:24:09,018 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@697a24cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 07:24:09, skipping insertion in model container [2024-11-22 07:24:09,018 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 07:24:09" (1/1) ... [2024-11-22 07:24:09,061 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-22 07:24:09,257 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-50.i[916,929] [2024-11-22 07:24:09,412 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 07:24:09,433 INFO L200 MainTranslator]: Completed pre-run [2024-11-22 07:24:09,450 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-50.i[916,929] [2024-11-22 07:24:09,528 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 07:24:09,550 INFO L204 MainTranslator]: Completed translation [2024-11-22 07:24:09,551 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 07:24:09 WrapperNode [2024-11-22 07:24:09,551 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-22 07:24:09,552 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-22 07:24:09,552 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-22 07:24:09,552 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-22 07:24:09,558 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 07:24:09" (1/1) ... [2024-11-22 07:24:09,578 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 07:24:09" (1/1) ... [2024-11-22 07:24:09,639 INFO L138 Inliner]: procedures = 26, calls = 90, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 559 [2024-11-22 07:24:09,640 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-22 07:24:09,640 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-22 07:24:09,641 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-22 07:24:09,641 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-22 07:24:09,650 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 07:24:09" (1/1) ... [2024-11-22 07:24:09,650 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 07:24:09" (1/1) ... [2024-11-22 07:24:09,667 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 07:24:09" (1/1) ... [2024-11-22 07:24:09,715 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-22 07:24:09,716 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 07:24:09" (1/1) ... [2024-11-22 07:24:09,716 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 07:24:09" (1/1) ... [2024-11-22 07:24:09,748 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 07:24:09" (1/1) ... [2024-11-22 07:24:09,756 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 07:24:09" (1/1) ... [2024-11-22 07:24:09,771 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 07:24:09" (1/1) ... [2024-11-22 07:24:09,777 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 07:24:09" (1/1) ... [2024-11-22 07:24:09,791 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-22 07:24:09,793 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-22 07:24:09,793 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-22 07:24:09,794 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-22 07:24:09,795 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 07:24:09" (1/1) ... [2024-11-22 07:24:09,799 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 07:24:09,808 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 07:24:09,826 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-22 07:24:09,828 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-22 07:24:09,865 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-22 07:24:09,865 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-22 07:24:09,865 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-22 07:24:09,865 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-22 07:24:09,865 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-22 07:24:09,866 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-22 07:24:09,974 INFO L238 CfgBuilder]: Building ICFG [2024-11-22 07:24:09,977 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-22 07:24:10,763 INFO L? ?]: Removed 24 outVars from TransFormulas that were not future-live. [2024-11-22 07:24:10,763 INFO L287 CfgBuilder]: Performing block encoding [2024-11-22 07:24:10,786 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-22 07:24:10,788 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-22 07:24:10,789 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 07:24:10 BoogieIcfgContainer [2024-11-22 07:24:10,789 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-22 07:24:10,791 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-22 07:24:10,792 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-22 07:24:10,795 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-22 07:24:10,796 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 07:24:09" (1/3) ... [2024-11-22 07:24:10,797 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f584865 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 07:24:10, skipping insertion in model container [2024-11-22 07:24:10,797 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 07:24:09" (2/3) ... [2024-11-22 07:24:10,798 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f584865 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 07:24:10, skipping insertion in model container [2024-11-22 07:24:10,798 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 07:24:10" (3/3) ... [2024-11-22 07:24:10,800 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-250_file-50.i [2024-11-22 07:24:10,816 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-22 07:24:10,816 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-22 07:24:10,898 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-22 07:24:10,905 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;@1af63328, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-22 07:24:10,905 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-22 07:24:10,913 INFO L276 IsEmpty]: Start isEmpty. Operand has 235 states, 155 states have (on average 1.5225806451612902) internal successors, (236), 156 states have internal predecessors, (236), 77 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 77 states have call predecessors, (77), 77 states have call successors, (77) [2024-11-22 07:24:10,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 484 [2024-11-22 07:24:10,937 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 07:24:10,938 INFO L215 NwaCegarLoop]: trace histogram [77, 77, 77, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 07:24:10,939 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 07:24:10,943 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 07:24:10,944 INFO L85 PathProgramCache]: Analyzing trace with hash -1477481199, now seen corresponding path program 1 times [2024-11-22 07:24:10,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 07:24:10,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855817718] [2024-11-22 07:24:10,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 07:24:10,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 07:24:11,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 07:24:11,436 INFO L134 CoverageAnalysis]: Checked inductivity of 11704 backedges. 0 proven. 152 refuted. 0 times theorem prover too weak. 11552 trivial. 0 not checked. [2024-11-22 07:24:11,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 07:24:11,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855817718] [2024-11-22 07:24:11,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1855817718] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 07:24:11,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2058708537] [2024-11-22 07:24:11,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 07:24:11,439 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 07:24:11,439 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 07:24:11,443 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 07:24:11,447 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-22 07:24:11,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 07:24:11,719 INFO L255 TraceCheckSpWp]: Trace formula consists of 1072 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-22 07:24:11,736 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 07:24:11,792 INFO L134 CoverageAnalysis]: Checked inductivity of 11704 backedges. 152 proven. 0 refuted. 0 times theorem prover too weak. 11552 trivial. 0 not checked. [2024-11-22 07:24:11,792 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 07:24:11,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2058708537] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 07:24:11,793 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 07:24:11,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-22 07:24:11,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965358320] [2024-11-22 07:24:11,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 07:24:11,800 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-22 07:24:11,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 07:24:11,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-22 07:24:11,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-22 07:24:11,827 INFO L87 Difference]: Start difference. First operand has 235 states, 155 states have (on average 1.5225806451612902) internal successors, (236), 156 states have internal predecessors, (236), 77 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 77 states have call predecessors, (77), 77 states have call successors, (77) Second operand has 2 states, 2 states have (on average 51.5) internal successors, (103), 2 states have internal predecessors, (103), 2 states have call successors, (77), 2 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 2 states have call successors, (77) [2024-11-22 07:24:11,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 07:24:11,877 INFO L93 Difference]: Finished difference Result 463 states and 851 transitions. [2024-11-22 07:24:11,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-22 07:24:11,880 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 51.5) internal successors, (103), 2 states have internal predecessors, (103), 2 states have call successors, (77), 2 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 2 states have call successors, (77) Word has length 483 [2024-11-22 07:24:11,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 07:24:11,888 INFO L225 Difference]: With dead ends: 463 [2024-11-22 07:24:11,889 INFO L226 Difference]: Without dead ends: 231 [2024-11-22 07:24:11,903 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 484 GetRequests, 484 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-22 07:24:11,911 INFO L432 NwaCegarLoop]: 382 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, 382 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 07:24:11,912 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 382 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 07:24:11,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2024-11-22 07:24:11,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 231. [2024-11-22 07:24:11,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 152 states have (on average 1.5) internal successors, (228), 152 states have internal predecessors, (228), 77 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 77 states have call predecessors, (77), 77 states have call successors, (77) [2024-11-22 07:24:11,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 382 transitions. [2024-11-22 07:24:11,993 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 382 transitions. Word has length 483 [2024-11-22 07:24:11,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 07:24:11,994 INFO L471 AbstractCegarLoop]: Abstraction has 231 states and 382 transitions. [2024-11-22 07:24:11,994 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 51.5) internal successors, (103), 2 states have internal predecessors, (103), 2 states have call successors, (77), 2 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 2 states have call successors, (77) [2024-11-22 07:24:11,995 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 382 transitions. [2024-11-22 07:24:12,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 484 [2024-11-22 07:24:12,004 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 07:24:12,004 INFO L215 NwaCegarLoop]: trace histogram [77, 77, 77, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 07:24:12,013 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-22 07:24:12,205 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-22 07:24:12,206 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 07:24:12,206 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 07:24:12,207 INFO L85 PathProgramCache]: Analyzing trace with hash -935932201, now seen corresponding path program 1 times [2024-11-22 07:24:12,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 07:24:12,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131633131] [2024-11-22 07:24:12,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 07:24:12,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 07:24:12,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 07:24:12,549 INFO L134 CoverageAnalysis]: Checked inductivity of 11704 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11704 trivial. 0 not checked. [2024-11-22 07:24:12,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 07:24:12,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [131633131] [2024-11-22 07:24:12,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [131633131] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 07:24:12,552 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 07:24:12,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 07:24:12,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820392083] [2024-11-22 07:24:12,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 07:24:12,554 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 07:24:12,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 07:24:12,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 07:24:12,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 07:24:12,559 INFO L87 Difference]: Start difference. First operand 231 states and 382 transitions. Second operand has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) [2024-11-22 07:24:12,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 07:24:12,655 INFO L93 Difference]: Finished difference Result 592 states and 983 transitions. [2024-11-22 07:24:12,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 07:24:12,656 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) Word has length 483 [2024-11-22 07:24:12,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 07:24:12,664 INFO L225 Difference]: With dead ends: 592 [2024-11-22 07:24:12,667 INFO L226 Difference]: Without dead ends: 364 [2024-11-22 07:24:12,669 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 07:24:12,670 INFO L432 NwaCegarLoop]: 439 mSDtfsCounter, 227 mSDsluCounter, 358 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 227 SdHoareTripleChecker+Valid, 797 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 07:24:12,671 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [227 Valid, 797 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 07:24:12,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364 states. [2024-11-22 07:24:12,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364 to 361. [2024-11-22 07:24:12,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 361 states, 259 states have (on average 1.5444015444015444) internal successors, (400), 260 states have internal predecessors, (400), 99 states have call successors, (99), 2 states have call predecessors, (99), 2 states have return successors, (99), 98 states have call predecessors, (99), 99 states have call successors, (99) [2024-11-22 07:24:12,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 361 states to 361 states and 598 transitions. [2024-11-22 07:24:12,732 INFO L78 Accepts]: Start accepts. Automaton has 361 states and 598 transitions. Word has length 483 [2024-11-22 07:24:12,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 07:24:12,737 INFO L471 AbstractCegarLoop]: Abstraction has 361 states and 598 transitions. [2024-11-22 07:24:12,738 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) [2024-11-22 07:24:12,738 INFO L276 IsEmpty]: Start isEmpty. Operand 361 states and 598 transitions. [2024-11-22 07:24:12,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 484 [2024-11-22 07:24:12,744 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 07:24:12,745 INFO L215 NwaCegarLoop]: trace histogram [77, 77, 77, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 07:24:12,745 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-22 07:24:12,746 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 07:24:12,747 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 07:24:12,747 INFO L85 PathProgramCache]: Analyzing trace with hash -1289020583, now seen corresponding path program 1 times [2024-11-22 07:24:12,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 07:24:12,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922582002] [2024-11-22 07:24:12,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 07:24:12,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 07:24:12,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 07:24:13,046 INFO L134 CoverageAnalysis]: Checked inductivity of 11704 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11704 trivial. 0 not checked. [2024-11-22 07:24:13,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 07:24:13,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922582002] [2024-11-22 07:24:13,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1922582002] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 07:24:13,049 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 07:24:13,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 07:24:13,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667889268] [2024-11-22 07:24:13,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 07:24:13,050 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 07:24:13,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 07:24:13,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 07:24:13,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 07:24:13,054 INFO L87 Difference]: Start difference. First operand 361 states and 598 transitions. Second operand has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) [2024-11-22 07:24:13,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 07:24:13,136 INFO L93 Difference]: Finished difference Result 966 states and 1594 transitions. [2024-11-22 07:24:13,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 07:24:13,138 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) Word has length 483 [2024-11-22 07:24:13,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 07:24:13,149 INFO L225 Difference]: With dead ends: 966 [2024-11-22 07:24:13,150 INFO L226 Difference]: Without dead ends: 608 [2024-11-22 07:24:13,152 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 07:24:13,153 INFO L432 NwaCegarLoop]: 526 mSDtfsCounter, 224 mSDsluCounter, 369 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 224 SdHoareTripleChecker+Valid, 895 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 07:24:13,155 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [224 Valid, 895 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 07:24:13,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 608 states. [2024-11-22 07:24:13,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 608 to 605. [2024-11-22 07:24:13,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 605 states, 424 states have (on average 1.5117924528301887) internal successors, (641), 427 states have internal predecessors, (641), 176 states have call successors, (176), 4 states have call predecessors, (176), 4 states have return successors, (176), 173 states have call predecessors, (176), 176 states have call successors, (176) [2024-11-22 07:24:13,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 605 states to 605 states and 993 transitions. [2024-11-22 07:24:13,232 INFO L78 Accepts]: Start accepts. Automaton has 605 states and 993 transitions. Word has length 483 [2024-11-22 07:24:13,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 07:24:13,235 INFO L471 AbstractCegarLoop]: Abstraction has 605 states and 993 transitions. [2024-11-22 07:24:13,235 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) [2024-11-22 07:24:13,235 INFO L276 IsEmpty]: Start isEmpty. Operand 605 states and 993 transitions. [2024-11-22 07:24:13,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 484 [2024-11-22 07:24:13,239 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 07:24:13,240 INFO L215 NwaCegarLoop]: trace histogram [77, 77, 77, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 07:24:13,240 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-22 07:24:13,240 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 07:24:13,241 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 07:24:13,241 INFO L85 PathProgramCache]: Analyzing trace with hash 1984878359, now seen corresponding path program 1 times [2024-11-22 07:24:13,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 07:24:13,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059068880] [2024-11-22 07:24:13,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 07:24:13,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 07:24:13,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 07:24:13,750 INFO L134 CoverageAnalysis]: Checked inductivity of 11704 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11704 trivial. 0 not checked. [2024-11-22 07:24:13,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 07:24:13,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059068880] [2024-11-22 07:24:13,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1059068880] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 07:24:13,751 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 07:24:13,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 07:24:13,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2244864] [2024-11-22 07:24:13,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 07:24:13,755 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 07:24:13,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 07:24:13,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 07:24:13,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 07:24:13,756 INFO L87 Difference]: Start difference. First operand 605 states and 993 transitions. Second operand has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) [2024-11-22 07:24:14,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 07:24:14,100 INFO L93 Difference]: Finished difference Result 1207 states and 1983 transitions. [2024-11-22 07:24:14,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 07:24:14,101 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) Word has length 483 [2024-11-22 07:24:14,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 07:24:14,105 INFO L225 Difference]: With dead ends: 1207 [2024-11-22 07:24:14,105 INFO L226 Difference]: Without dead ends: 605 [2024-11-22 07:24:14,107 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-22 07:24:14,108 INFO L432 NwaCegarLoop]: 377 mSDtfsCounter, 375 mSDsluCounter, 218 mSDsCounter, 0 mSdLazyCounter, 167 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 375 SdHoareTripleChecker+Valid, 595 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-22 07:24:14,108 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [375 Valid, 595 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 167 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-22 07:24:14,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 605 states. [2024-11-22 07:24:14,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 605 to 605. [2024-11-22 07:24:14,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 605 states, 424 states have (on average 1.5023584905660377) internal successors, (637), 427 states have internal predecessors, (637), 176 states have call successors, (176), 4 states have call predecessors, (176), 4 states have return successors, (176), 173 states have call predecessors, (176), 176 states have call successors, (176) [2024-11-22 07:24:14,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 605 states to 605 states and 989 transitions. [2024-11-22 07:24:14,148 INFO L78 Accepts]: Start accepts. Automaton has 605 states and 989 transitions. Word has length 483 [2024-11-22 07:24:14,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 07:24:14,149 INFO L471 AbstractCegarLoop]: Abstraction has 605 states and 989 transitions. [2024-11-22 07:24:14,150 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) [2024-11-22 07:24:14,150 INFO L276 IsEmpty]: Start isEmpty. Operand 605 states and 989 transitions. [2024-11-22 07:24:14,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 484 [2024-11-22 07:24:14,152 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 07:24:14,153 INFO L215 NwaCegarLoop]: trace histogram [77, 77, 77, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 07:24:14,153 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-22 07:24:14,153 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 07:24:14,153 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 07:24:14,153 INFO L85 PathProgramCache]: Analyzing trace with hash -535081575, now seen corresponding path program 1 times [2024-11-22 07:24:14,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 07:24:14,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345494729] [2024-11-22 07:24:14,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 07:24:14,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 07:24:14,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 07:24:14,591 INFO L134 CoverageAnalysis]: Checked inductivity of 11704 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11704 trivial. 0 not checked. [2024-11-22 07:24:14,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 07:24:14,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345494729] [2024-11-22 07:24:14,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [345494729] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 07:24:14,592 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 07:24:14,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 07:24:14,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942049256] [2024-11-22 07:24:14,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 07:24:14,593 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 07:24:14,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 07:24:14,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 07:24:14,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 07:24:14,594 INFO L87 Difference]: Start difference. First operand 605 states and 989 transitions. Second operand has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) [2024-11-22 07:24:14,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 07:24:14,647 INFO L93 Difference]: Finished difference Result 1211 states and 1983 transitions. [2024-11-22 07:24:14,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 07:24:14,648 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) Word has length 483 [2024-11-22 07:24:14,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 07:24:14,652 INFO L225 Difference]: With dead ends: 1211 [2024-11-22 07:24:14,652 INFO L226 Difference]: Without dead ends: 609 [2024-11-22 07:24:14,654 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 07:24:14,654 INFO L432 NwaCegarLoop]: 380 mSDtfsCounter, 0 mSDsluCounter, 374 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 754 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 07:24:14,654 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 754 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 07:24:14,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 609 states. [2024-11-22 07:24:14,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 609 to 609. [2024-11-22 07:24:14,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 609 states, 428 states have (on average 1.4976635514018692) internal successors, (641), 431 states have internal predecessors, (641), 176 states have call successors, (176), 4 states have call predecessors, (176), 4 states have return successors, (176), 173 states have call predecessors, (176), 176 states have call successors, (176) [2024-11-22 07:24:14,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 609 states to 609 states and 993 transitions. [2024-11-22 07:24:14,687 INFO L78 Accepts]: Start accepts. Automaton has 609 states and 993 transitions. Word has length 483 [2024-11-22 07:24:14,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 07:24:14,688 INFO L471 AbstractCegarLoop]: Abstraction has 609 states and 993 transitions. [2024-11-22 07:24:14,688 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) [2024-11-22 07:24:14,688 INFO L276 IsEmpty]: Start isEmpty. Operand 609 states and 993 transitions. [2024-11-22 07:24:14,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 484 [2024-11-22 07:24:14,690 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 07:24:14,691 INFO L215 NwaCegarLoop]: trace histogram [77, 77, 77, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 07:24:14,691 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-22 07:24:14,691 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 07:24:14,691 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 07:24:14,692 INFO L85 PathProgramCache]: Analyzing trace with hash -473041961, now seen corresponding path program 1 times [2024-11-22 07:24:14,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 07:24:14,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696351865] [2024-11-22 07:24:14,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 07:24:14,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 07:24:14,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 07:24:15,771 INFO L134 CoverageAnalysis]: Checked inductivity of 11704 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11704 trivial. 0 not checked. [2024-11-22 07:24:15,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 07:24:15,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696351865] [2024-11-22 07:24:15,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [696351865] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 07:24:15,772 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 07:24:15,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 07:24:15,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107376615] [2024-11-22 07:24:15,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 07:24:15,773 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 07:24:15,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 07:24:15,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 07:24:15,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-22 07:24:15,775 INFO L87 Difference]: Start difference. First operand 609 states and 993 transitions. Second operand has 5 states, 5 states have (on average 20.2) internal successors, (101), 5 states have internal predecessors, (101), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) [2024-11-22 07:24:16,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 07:24:16,460 INFO L93 Difference]: Finished difference Result 2583 states and 4204 transitions. [2024-11-22 07:24:16,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 07:24:16,461 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.2) internal successors, (101), 5 states have internal predecessors, (101), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) Word has length 483 [2024-11-22 07:24:16,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 07:24:16,472 INFO L225 Difference]: With dead ends: 2583 [2024-11-22 07:24:16,472 INFO L226 Difference]: Without dead ends: 1977 [2024-11-22 07:24:16,475 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 [2024-11-22 07:24:16,476 INFO L432 NwaCegarLoop]: 460 mSDtfsCounter, 744 mSDsluCounter, 858 mSDsCounter, 0 mSdLazyCounter, 243 mSolverCounterSat, 294 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 744 SdHoareTripleChecker+Valid, 1318 SdHoareTripleChecker+Invalid, 537 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 294 IncrementalHoareTripleChecker+Valid, 243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-22 07:24:16,476 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [744 Valid, 1318 Invalid, 537 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [294 Valid, 243 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-22 07:24:16,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1977 states. [2024-11-22 07:24:16,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1977 to 1213. [2024-11-22 07:24:16,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1213 states, 912 states have (on average 1.5230263157894737) internal successors, (1389), 919 states have internal predecessors, (1389), 292 states have call successors, (292), 8 states have call predecessors, (292), 8 states have return successors, (292), 285 states have call predecessors, (292), 292 states have call successors, (292) [2024-11-22 07:24:16,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1213 states to 1213 states and 1973 transitions. [2024-11-22 07:24:16,576 INFO L78 Accepts]: Start accepts. Automaton has 1213 states and 1973 transitions. Word has length 483 [2024-11-22 07:24:16,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 07:24:16,577 INFO L471 AbstractCegarLoop]: Abstraction has 1213 states and 1973 transitions. [2024-11-22 07:24:16,577 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.2) internal successors, (101), 5 states have internal predecessors, (101), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) [2024-11-22 07:24:16,577 INFO L276 IsEmpty]: Start isEmpty. Operand 1213 states and 1973 transitions. [2024-11-22 07:24:16,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 484 [2024-11-22 07:24:16,580 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 07:24:16,581 INFO L215 NwaCegarLoop]: trace histogram [77, 77, 77, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 07:24:16,581 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-22 07:24:16,581 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 07:24:16,582 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 07:24:16,582 INFO L85 PathProgramCache]: Analyzing trace with hash -332493351, now seen corresponding path program 1 times [2024-11-22 07:24:16,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 07:24:16,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145500738] [2024-11-22 07:24:16,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 07:24:16,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 07:24:16,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 07:24:17,124 INFO L134 CoverageAnalysis]: Checked inductivity of 11704 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11704 trivial. 0 not checked. [2024-11-22 07:24:17,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 07:24:17,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145500738] [2024-11-22 07:24:17,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [145500738] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 07:24:17,127 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 07:24:17,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 07:24:17,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278191422] [2024-11-22 07:24:17,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 07:24:17,128 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 07:24:17,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 07:24:17,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 07:24:17,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-22 07:24:17,129 INFO L87 Difference]: Start difference. First operand 1213 states and 1973 transitions. Second operand has 5 states, 5 states have (on average 20.2) internal successors, (101), 5 states have internal predecessors, (101), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) [2024-11-22 07:24:17,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 07:24:17,716 INFO L93 Difference]: Finished difference Result 3890 states and 6241 transitions. [2024-11-22 07:24:17,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 07:24:17,717 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.2) internal successors, (101), 5 states have internal predecessors, (101), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) Word has length 483 [2024-11-22 07:24:17,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 07:24:17,755 INFO L225 Difference]: With dead ends: 3890 [2024-11-22 07:24:17,755 INFO L226 Difference]: Without dead ends: 2680 [2024-11-22 07:24:17,758 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-11-22 07:24:17,758 INFO L432 NwaCegarLoop]: 348 mSDtfsCounter, 734 mSDsluCounter, 499 mSDsCounter, 0 mSdLazyCounter, 154 mSolverCounterSat, 128 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 734 SdHoareTripleChecker+Valid, 847 SdHoareTripleChecker+Invalid, 282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 128 IncrementalHoareTripleChecker+Valid, 154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-22 07:24:17,759 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [734 Valid, 847 Invalid, 282 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [128 Valid, 154 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-22 07:24:17,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2680 states. [2024-11-22 07:24:17,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2680 to 1716. [2024-11-22 07:24:17,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1716 states, 1407 states have (on average 1.5728500355366026) internal successors, (2213), 1414 states have internal predecessors, (2213), 292 states have call successors, (292), 16 states have call predecessors, (292), 16 states have return successors, (292), 285 states have call predecessors, (292), 292 states have call successors, (292) [2024-11-22 07:24:17,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1716 states to 1716 states and 2797 transitions. [2024-11-22 07:24:17,864 INFO L78 Accepts]: Start accepts. Automaton has 1716 states and 2797 transitions. Word has length 483 [2024-11-22 07:24:17,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 07:24:17,865 INFO L471 AbstractCegarLoop]: Abstraction has 1716 states and 2797 transitions. [2024-11-22 07:24:17,865 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.2) internal successors, (101), 5 states have internal predecessors, (101), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) [2024-11-22 07:24:17,865 INFO L276 IsEmpty]: Start isEmpty. Operand 1716 states and 2797 transitions. [2024-11-22 07:24:17,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 484 [2024-11-22 07:24:17,869 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 07:24:17,870 INFO L215 NwaCegarLoop]: trace histogram [77, 77, 77, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 07:24:17,870 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-22 07:24:17,870 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 07:24:17,871 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 07:24:17,871 INFO L85 PathProgramCache]: Analyzing trace with hash 1968329239, now seen corresponding path program 1 times [2024-11-22 07:24:17,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 07:24:17,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816659606] [2024-11-22 07:24:17,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 07:24:17,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 07:24:18,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 07:24:18,349 INFO L134 CoverageAnalysis]: Checked inductivity of 11704 backedges. 165 proven. 63 refuted. 0 times theorem prover too weak. 11476 trivial. 0 not checked. [2024-11-22 07:24:18,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 07:24:18,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816659606] [2024-11-22 07:24:18,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1816659606] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 07:24:18,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2013743265] [2024-11-22 07:24:18,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 07:24:18,350 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 07:24:18,351 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 07:24:18,353 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 07:24:18,353 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-22 07:24:18,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 07:24:18,594 INFO L255 TraceCheckSpWp]: Trace formula consists of 1070 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-22 07:24:18,603 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 07:24:18,841 INFO L134 CoverageAnalysis]: Checked inductivity of 11704 backedges. 4806 proven. 63 refuted. 0 times theorem prover too weak. 6835 trivial. 0 not checked. [2024-11-22 07:24:18,841 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 07:24:19,161 INFO L134 CoverageAnalysis]: Checked inductivity of 11704 backedges. 165 proven. 63 refuted. 0 times theorem prover too weak. 11476 trivial. 0 not checked. [2024-11-22 07:24:19,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2013743265] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 07:24:19,161 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 07:24:19,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 7 [2024-11-22 07:24:19,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138655535] [2024-11-22 07:24:19,162 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 07:24:19,163 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-22 07:24:19,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 07:24:19,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-22 07:24:19,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-22 07:24:19,164 INFO L87 Difference]: Start difference. First operand 1716 states and 2797 transitions. Second operand has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 7 states have internal predecessors, (110), 2 states have call successors, (98), 2 states have call predecessors, (98), 4 states have return successors, (99), 2 states have call predecessors, (99), 2 states have call successors, (99) [2024-11-22 07:24:19,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 07:24:19,571 INFO L93 Difference]: Finished difference Result 2757 states and 4507 transitions. [2024-11-22 07:24:19,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-22 07:24:19,575 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 7 states have internal predecessors, (110), 2 states have call successors, (98), 2 states have call predecessors, (98), 4 states have return successors, (99), 2 states have call predecessors, (99), 2 states have call successors, (99) Word has length 483 [2024-11-22 07:24:19,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 07:24:19,581 INFO L225 Difference]: With dead ends: 2757 [2024-11-22 07:24:19,581 INFO L226 Difference]: Without dead ends: 1044 [2024-11-22 07:24:19,584 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 972 GetRequests, 963 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2024-11-22 07:24:19,585 INFO L432 NwaCegarLoop]: 294 mSDtfsCounter, 249 mSDsluCounter, 433 mSDsCounter, 0 mSdLazyCounter, 399 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 304 SdHoareTripleChecker+Valid, 727 SdHoareTripleChecker+Invalid, 416 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 399 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-22 07:24:19,585 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [304 Valid, 727 Invalid, 416 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 399 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-22 07:24:19,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1044 states. [2024-11-22 07:24:19,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1044 to 1028. [2024-11-22 07:24:19,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1028 states, 861 states have (on average 1.5691056910569106) internal successors, (1351), 864 states have internal predecessors, (1351), 157 states have call successors, (157), 9 states have call predecessors, (157), 9 states have return successors, (157), 154 states have call predecessors, (157), 157 states have call successors, (157) [2024-11-22 07:24:19,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1028 states to 1028 states and 1665 transitions. [2024-11-22 07:24:19,670 INFO L78 Accepts]: Start accepts. Automaton has 1028 states and 1665 transitions. Word has length 483 [2024-11-22 07:24:19,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 07:24:19,671 INFO L471 AbstractCegarLoop]: Abstraction has 1028 states and 1665 transitions. [2024-11-22 07:24:19,671 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 7 states have internal predecessors, (110), 2 states have call successors, (98), 2 states have call predecessors, (98), 4 states have return successors, (99), 2 states have call predecessors, (99), 2 states have call successors, (99) [2024-11-22 07:24:19,671 INFO L276 IsEmpty]: Start isEmpty. Operand 1028 states and 1665 transitions. [2024-11-22 07:24:19,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 485 [2024-11-22 07:24:19,674 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 07:24:19,674 INFO L215 NwaCegarLoop]: trace histogram [77, 77, 77, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 07:24:19,683 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-22 07:24:19,874 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-11-22 07:24:19,875 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 07:24:19,876 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 07:24:19,877 INFO L85 PathProgramCache]: Analyzing trace with hash -1163595763, now seen corresponding path program 1 times [2024-11-22 07:24:19,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 07:24:19,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596405981] [2024-11-22 07:24:19,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 07:24:19,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 07:24:20,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-22 07:24:20,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [508292365] [2024-11-22 07:24:20,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 07:24:20,262 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 07:24:20,262 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 07:24:20,265 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 07:24:20,267 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-22 07:24:20,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 07:24:20,627 INFO L255 TraceCheckSpWp]: Trace formula consists of 1071 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-22 07:24:20,637 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 07:24:22,544 INFO L134 CoverageAnalysis]: Checked inductivity of 11704 backedges. 4738 proven. 165 refuted. 0 times theorem prover too weak. 6801 trivial. 0 not checked. [2024-11-22 07:24:22,545 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 07:24:23,112 INFO L134 CoverageAnalysis]: Checked inductivity of 11704 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11704 trivial. 0 not checked. [2024-11-22 07:24:23,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 07:24:23,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596405981] [2024-11-22 07:24:23,114 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-22 07:24:23,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [508292365] [2024-11-22 07:24:23,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [508292365] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-22 07:24:23,114 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 07:24:23,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [9] total 14 [2024-11-22 07:24:23,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649950367] [2024-11-22 07:24:23,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 07:24:23,115 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 07:24:23,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 07:24:23,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 07:24:23,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2024-11-22 07:24:23,116 INFO L87 Difference]: Start difference. First operand 1028 states and 1665 transitions. Second operand has 6 states, 6 states have (on average 17.0) internal successors, (102), 6 states have internal predecessors, (102), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) [2024-11-22 07:24:23,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 07:24:23,822 INFO L93 Difference]: Finished difference Result 3227 states and 5172 transitions. [2024-11-22 07:24:23,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 07:24:23,823 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.0) internal successors, (102), 6 states have internal predecessors, (102), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) Word has length 484 [2024-11-22 07:24:23,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 07:24:23,832 INFO L225 Difference]: With dead ends: 3227 [2024-11-22 07:24:23,832 INFO L226 Difference]: Without dead ends: 2202 [2024-11-22 07:24:23,834 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 966 GetRequests, 954 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2024-11-22 07:24:23,835 INFO L432 NwaCegarLoop]: 544 mSDtfsCounter, 867 mSDsluCounter, 728 mSDsCounter, 0 mSdLazyCounter, 201 mSolverCounterSat, 289 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 867 SdHoareTripleChecker+Valid, 1272 SdHoareTripleChecker+Invalid, 490 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 289 IncrementalHoareTripleChecker+Valid, 201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-22 07:24:23,835 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [867 Valid, 1272 Invalid, 490 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [289 Valid, 201 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-22 07:24:23,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2202 states. [2024-11-22 07:24:23,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2202 to 1548. [2024-11-22 07:24:23,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1548 states, 1275 states have (on average 1.5490196078431373) internal successors, (1975), 1282 states have internal predecessors, (1975), 255 states have call successors, (255), 17 states have call predecessors, (255), 17 states have return successors, (255), 248 states have call predecessors, (255), 255 states have call successors, (255) [2024-11-22 07:24:23,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1548 states to 1548 states and 2485 transitions. [2024-11-22 07:24:23,934 INFO L78 Accepts]: Start accepts. Automaton has 1548 states and 2485 transitions. Word has length 484 [2024-11-22 07:24:23,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 07:24:23,935 INFO L471 AbstractCegarLoop]: Abstraction has 1548 states and 2485 transitions. [2024-11-22 07:24:23,935 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.0) internal successors, (102), 6 states have internal predecessors, (102), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) [2024-11-22 07:24:23,935 INFO L276 IsEmpty]: Start isEmpty. Operand 1548 states and 2485 transitions. [2024-11-22 07:24:23,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 485 [2024-11-22 07:24:23,938 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 07:24:23,939 INFO L215 NwaCegarLoop]: trace histogram [77, 77, 77, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 07:24:23,946 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-22 07:24:24,139 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 07:24:24,140 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 07:24:24,141 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 07:24:24,141 INFO L85 PathProgramCache]: Analyzing trace with hash -810507381, now seen corresponding path program 1 times [2024-11-22 07:24:24,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 07:24:24,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625837869] [2024-11-22 07:24:24,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 07:24:24,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 07:24:24,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-22 07:24:24,452 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1012869165] [2024-11-22 07:24:24,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 07:24:24,453 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 07:24:24,453 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 07:24:24,455 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 07:24:24,456 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-22 07:24:24,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 07:24:24,817 INFO L255 TraceCheckSpWp]: Trace formula consists of 1073 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-22 07:24:24,830 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 07:24:25,996 INFO L134 CoverageAnalysis]: Checked inductivity of 11704 backedges. 4738 proven. 165 refuted. 0 times theorem prover too weak. 6801 trivial. 0 not checked. [2024-11-22 07:24:25,997 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 07:24:26,452 INFO L134 CoverageAnalysis]: Checked inductivity of 11704 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11704 trivial. 0 not checked. [2024-11-22 07:24:26,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 07:24:26,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625837869] [2024-11-22 07:24:26,453 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-22 07:24:26,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1012869165] [2024-11-22 07:24:26,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1012869165] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-22 07:24:26,453 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 07:24:26,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [9] total 13 [2024-11-22 07:24:26,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081779803] [2024-11-22 07:24:26,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 07:24:26,454 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 07:24:26,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 07:24:26,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 07:24:26,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2024-11-22 07:24:26,456 INFO L87 Difference]: Start difference. First operand 1548 states and 2485 transitions. Second operand has 6 states, 6 states have (on average 17.0) internal successors, (102), 6 states have internal predecessors, (102), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) [2024-11-22 07:24:26,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 07:24:26,850 INFO L93 Difference]: Finished difference Result 4223 states and 6755 transitions. [2024-11-22 07:24:26,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 07:24:26,851 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.0) internal successors, (102), 6 states have internal predecessors, (102), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) Word has length 484 [2024-11-22 07:24:26,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 07:24:26,862 INFO L225 Difference]: With dead ends: 4223 [2024-11-22 07:24:26,862 INFO L226 Difference]: Without dead ends: 2678 [2024-11-22 07:24:26,866 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 966 GetRequests, 955 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2024-11-22 07:24:26,867 INFO L432 NwaCegarLoop]: 632 mSDtfsCounter, 464 mSDsluCounter, 1120 mSDsCounter, 0 mSdLazyCounter, 211 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 464 SdHoareTripleChecker+Valid, 1752 SdHoareTripleChecker+Invalid, 218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-22 07:24:26,867 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [464 Valid, 1752 Invalid, 218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 211 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-22 07:24:26,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2678 states. [2024-11-22 07:24:26,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2678 to 1548. [2024-11-22 07:24:26,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1548 states, 1275 states have (on average 1.5490196078431373) internal successors, (1975), 1282 states have internal predecessors, (1975), 255 states have call successors, (255), 17 states have call predecessors, (255), 17 states have return successors, (255), 248 states have call predecessors, (255), 255 states have call successors, (255) [2024-11-22 07:24:26,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1548 states to 1548 states and 2485 transitions. [2024-11-22 07:24:26,996 INFO L78 Accepts]: Start accepts. Automaton has 1548 states and 2485 transitions. Word has length 484 [2024-11-22 07:24:26,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 07:24:26,997 INFO L471 AbstractCegarLoop]: Abstraction has 1548 states and 2485 transitions. [2024-11-22 07:24:26,997 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.0) internal successors, (102), 6 states have internal predecessors, (102), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) [2024-11-22 07:24:26,997 INFO L276 IsEmpty]: Start isEmpty. Operand 1548 states and 2485 transitions. [2024-11-22 07:24:27,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 485 [2024-11-22 07:24:27,000 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 07:24:27,001 INFO L215 NwaCegarLoop]: trace histogram [77, 77, 77, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 07:24:27,011 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-22 07:24:27,201 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 07:24:27,202 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 07:24:27,203 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 07:24:27,203 INFO L85 PathProgramCache]: Analyzing trace with hash -1179114481, now seen corresponding path program 1 times [2024-11-22 07:24:27,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 07:24:27,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844240788] [2024-11-22 07:24:27,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 07:24:27,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 07:24:27,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 07:24:27,535 INFO L134 CoverageAnalysis]: Checked inductivity of 11704 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11704 trivial. 0 not checked. [2024-11-22 07:24:27,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 07:24:27,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1844240788] [2024-11-22 07:24:27,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1844240788] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 07:24:27,536 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 07:24:27,536 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 07:24:27,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033434845] [2024-11-22 07:24:27,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 07:24:27,537 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 07:24:27,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 07:24:27,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 07:24:27,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-22 07:24:27,538 INFO L87 Difference]: Start difference. First operand 1548 states and 2485 transitions. Second operand has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) [2024-11-22 07:24:27,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 07:24:27,768 INFO L93 Difference]: Finished difference Result 4092 states and 6573 transitions. [2024-11-22 07:24:27,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 07:24:27,769 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) Word has length 484 [2024-11-22 07:24:27,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 07:24:27,788 INFO L225 Difference]: With dead ends: 4092 [2024-11-22 07:24:27,792 INFO L226 Difference]: Without dead ends: 2547 [2024-11-22 07:24:27,797 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-22 07:24:27,804 INFO L432 NwaCegarLoop]: 542 mSDtfsCounter, 248 mSDsluCounter, 719 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 248 SdHoareTripleChecker+Valid, 1261 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 07:24:27,805 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [248 Valid, 1261 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 07:24:27,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2547 states. [2024-11-22 07:24:28,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2547 to 2545. [2024-11-22 07:24:28,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2545 states, 2104 states have (on average 1.5503802281368821) internal successors, (3262), 2114 states have internal predecessors, (3262), 412 states have call successors, (412), 28 states have call predecessors, (412), 28 states have return successors, (412), 402 states have call predecessors, (412), 412 states have call successors, (412) [2024-11-22 07:24:28,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2545 states to 2545 states and 4086 transitions. [2024-11-22 07:24:28,154 INFO L78 Accepts]: Start accepts. Automaton has 2545 states and 4086 transitions. Word has length 484 [2024-11-22 07:24:28,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 07:24:28,155 INFO L471 AbstractCegarLoop]: Abstraction has 2545 states and 4086 transitions. [2024-11-22 07:24:28,155 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) [2024-11-22 07:24:28,155 INFO L276 IsEmpty]: Start isEmpty. Operand 2545 states and 4086 transitions. [2024-11-22 07:24:28,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 487 [2024-11-22 07:24:28,159 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 07:24:28,159 INFO L215 NwaCegarLoop]: trace histogram [77, 77, 77, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 07:24:28,159 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-22 07:24:28,159 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 07:24:28,160 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 07:24:28,160 INFO L85 PathProgramCache]: Analyzing trace with hash 1852163767, now seen corresponding path program 1 times [2024-11-22 07:24:28,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 07:24:28,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950607978] [2024-11-22 07:24:28,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 07:24:28,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 07:24:28,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 07:24:28,338 INFO L134 CoverageAnalysis]: Checked inductivity of 11704 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11704 trivial. 0 not checked. [2024-11-22 07:24:28,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 07:24:28,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950607978] [2024-11-22 07:24:28,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1950607978] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 07:24:28,338 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 07:24:28,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 07:24:28,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336530779] [2024-11-22 07:24:28,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 07:24:28,341 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 07:24:28,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 07:24:28,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 07:24:28,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 07:24:28,342 INFO L87 Difference]: Start difference. First operand 2545 states and 4086 transitions. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) [2024-11-22 07:24:28,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 07:24:28,483 INFO L93 Difference]: Finished difference Result 5095 states and 8185 transitions. [2024-11-22 07:24:28,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 07:24:28,484 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) Word has length 486 [2024-11-22 07:24:28,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 07:24:28,495 INFO L225 Difference]: With dead ends: 5095 [2024-11-22 07:24:28,495 INFO L226 Difference]: Without dead ends: 2553 [2024-11-22 07:24:28,501 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 07:24:28,502 INFO L432 NwaCegarLoop]: 376 mSDtfsCounter, 0 mSDsluCounter, 371 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 747 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 07:24:28,502 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 747 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 07:24:28,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2553 states. [2024-11-22 07:24:28,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2553 to 2553. [2024-11-22 07:24:28,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2553 states, 2112 states have (on average 1.5482954545454546) internal successors, (3270), 2122 states have internal predecessors, (3270), 412 states have call successors, (412), 28 states have call predecessors, (412), 28 states have return successors, (412), 402 states have call predecessors, (412), 412 states have call successors, (412) [2024-11-22 07:24:28,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2553 states to 2553 states and 4094 transitions. [2024-11-22 07:24:28,661 INFO L78 Accepts]: Start accepts. Automaton has 2553 states and 4094 transitions. Word has length 486 [2024-11-22 07:24:28,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 07:24:28,662 INFO L471 AbstractCegarLoop]: Abstraction has 2553 states and 4094 transitions. [2024-11-22 07:24:28,662 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) [2024-11-22 07:24:28,662 INFO L276 IsEmpty]: Start isEmpty. Operand 2553 states and 4094 transitions. [2024-11-22 07:24:28,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 487 [2024-11-22 07:24:28,708 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 07:24:28,709 INFO L215 NwaCegarLoop]: trace histogram [77, 77, 77, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 07:24:28,709 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-22 07:24:28,709 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 07:24:28,709 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 07:24:28,710 INFO L85 PathProgramCache]: Analyzing trace with hash 2100310261, now seen corresponding path program 1 times [2024-11-22 07:24:28,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 07:24:28,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705623843] [2024-11-22 07:24:28,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 07:24:28,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 07:24:28,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 07:24:28,926 INFO L134 CoverageAnalysis]: Checked inductivity of 11704 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11704 trivial. 0 not checked. [2024-11-22 07:24:28,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 07:24:28,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705623843] [2024-11-22 07:24:28,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1705623843] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 07:24:28,927 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 07:24:28,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 07:24:28,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402685388] [2024-11-22 07:24:28,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 07:24:28,928 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 07:24:28,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 07:24:28,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 07:24:28,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 07:24:28,932 INFO L87 Difference]: Start difference. First operand 2553 states and 4094 transitions. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) [2024-11-22 07:24:29,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 07:24:29,270 INFO L93 Difference]: Finished difference Result 7645 states and 12268 transitions. [2024-11-22 07:24:29,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 07:24:29,272 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) Word has length 486 [2024-11-22 07:24:29,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 07:24:29,308 INFO L225 Difference]: With dead ends: 7645 [2024-11-22 07:24:29,308 INFO L226 Difference]: Without dead ends: 5095 [2024-11-22 07:24:29,319 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 07:24:29,321 INFO L432 NwaCegarLoop]: 473 mSDtfsCounter, 240 mSDsluCounter, 360 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 240 SdHoareTripleChecker+Valid, 833 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 07:24:29,321 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [240 Valid, 833 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 07:24:29,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5095 states. [2024-11-22 07:24:29,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5095 to 5093. [2024-11-22 07:24:29,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5093 states, 4212 states have (on average 1.5479582146248814) internal successors, (6520), 4232 states have internal predecessors, (6520), 824 states have call successors, (824), 56 states have call predecessors, (824), 56 states have return successors, (824), 804 states have call predecessors, (824), 824 states have call successors, (824) [2024-11-22 07:24:29,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5093 states to 5093 states and 8168 transitions. [2024-11-22 07:24:29,880 INFO L78 Accepts]: Start accepts. Automaton has 5093 states and 8168 transitions. Word has length 486 [2024-11-22 07:24:29,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 07:24:29,881 INFO L471 AbstractCegarLoop]: Abstraction has 5093 states and 8168 transitions. [2024-11-22 07:24:29,882 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) [2024-11-22 07:24:29,882 INFO L276 IsEmpty]: Start isEmpty. Operand 5093 states and 8168 transitions. [2024-11-22 07:24:29,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 487 [2024-11-22 07:24:29,888 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 07:24:29,888 INFO L215 NwaCegarLoop]: trace histogram [77, 77, 77, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 07:24:29,889 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-22 07:24:29,889 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 07:24:29,889 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 07:24:29,889 INFO L85 PathProgramCache]: Analyzing trace with hash 2115828979, now seen corresponding path program 1 times [2024-11-22 07:24:29,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 07:24:29,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920146288] [2024-11-22 07:24:29,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 07:24:29,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 07:24:30,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 07:24:30,337 INFO L134 CoverageAnalysis]: Checked inductivity of 11704 backedges. 219 proven. 9 refuted. 0 times theorem prover too weak. 11476 trivial. 0 not checked. [2024-11-22 07:24:30,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 07:24:30,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920146288] [2024-11-22 07:24:30,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [920146288] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 07:24:30,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [947863279] [2024-11-22 07:24:30,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 07:24:30,338 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 07:24:30,339 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 07:24:30,340 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 07:24:30,341 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-22 07:24:30,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 07:24:30,636 INFO L255 TraceCheckSpWp]: Trace formula consists of 1080 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-22 07:24:30,644 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 07:24:30,832 INFO L134 CoverageAnalysis]: Checked inductivity of 11704 backedges. 1098 proven. 9 refuted. 0 times theorem prover too weak. 10597 trivial. 0 not checked. [2024-11-22 07:24:30,832 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 07:24:31,345 INFO L134 CoverageAnalysis]: Checked inductivity of 11704 backedges. 219 proven. 9 refuted. 0 times theorem prover too weak. 11476 trivial. 0 not checked. [2024-11-22 07:24:31,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [947863279] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 07:24:31,346 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 07:24:31,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2024-11-22 07:24:31,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530764187] [2024-11-22 07:24:31,346 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 07:24:31,348 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-22 07:24:31,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 07:24:31,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-22 07:24:31,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-11-22 07:24:31,351 INFO L87 Difference]: Start difference. First operand 5093 states and 8168 transitions. Second operand has 9 states, 9 states have (on average 20.77777777777778) internal successors, (187), 9 states have internal predecessors, (187), 4 states have call successors, (83), 2 states have call predecessors, (83), 4 states have return successors, (85), 4 states have call predecessors, (85), 4 states have call successors, (85) [2024-11-22 07:24:32,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 07:24:32,142 INFO L93 Difference]: Finished difference Result 10299 states and 16445 transitions. [2024-11-22 07:24:32,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-22 07:24:32,143 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 20.77777777777778) internal successors, (187), 9 states have internal predecessors, (187), 4 states have call successors, (83), 2 states have call predecessors, (83), 4 states have return successors, (85), 4 states have call predecessors, (85), 4 states have call successors, (85) Word has length 486 [2024-11-22 07:24:32,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 07:24:32,172 INFO L225 Difference]: With dead ends: 10299 [2024-11-22 07:24:32,172 INFO L226 Difference]: Without dead ends: 5209 [2024-11-22 07:24:32,183 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 979 GetRequests, 969 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=77, Unknown=0, NotChecked=0, Total=132 [2024-11-22 07:24:32,184 INFO L432 NwaCegarLoop]: 295 mSDtfsCounter, 617 mSDsluCounter, 433 mSDsCounter, 0 mSdLazyCounter, 389 mSolverCounterSat, 308 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 690 SdHoareTripleChecker+Valid, 728 SdHoareTripleChecker+Invalid, 697 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 308 IncrementalHoareTripleChecker+Valid, 389 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-22 07:24:32,184 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [690 Valid, 728 Invalid, 697 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [308 Valid, 389 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-22 07:24:32,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5209 states. [2024-11-22 07:24:32,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5209 to 4017. [2024-11-22 07:24:32,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4017 states, 3132 states have (on average 1.5019157088122606) internal successors, (4704), 3152 states have internal predecessors, (4704), 824 states have call successors, (824), 60 states have call predecessors, (824), 60 states have return successors, (824), 804 states have call predecessors, (824), 824 states have call successors, (824) [2024-11-22 07:24:32,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4017 states to 4017 states and 6352 transitions. [2024-11-22 07:24:32,604 INFO L78 Accepts]: Start accepts. Automaton has 4017 states and 6352 transitions. Word has length 486 [2024-11-22 07:24:32,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 07:24:32,605 INFO L471 AbstractCegarLoop]: Abstraction has 4017 states and 6352 transitions. [2024-11-22 07:24:32,605 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 20.77777777777778) internal successors, (187), 9 states have internal predecessors, (187), 4 states have call successors, (83), 2 states have call predecessors, (83), 4 states have return successors, (85), 4 states have call predecessors, (85), 4 states have call successors, (85) [2024-11-22 07:24:32,605 INFO L276 IsEmpty]: Start isEmpty. Operand 4017 states and 6352 transitions. [2024-11-22 07:24:32,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 487 [2024-11-22 07:24:32,610 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 07:24:32,610 INFO L215 NwaCegarLoop]: trace histogram [77, 77, 77, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 07:24:32,622 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-22 07:24:32,810 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-22 07:24:32,811 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 07:24:32,812 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 07:24:32,813 INFO L85 PathProgramCache]: Analyzing trace with hash 121684273, now seen corresponding path program 1 times [2024-11-22 07:24:32,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 07:24:32,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141761876] [2024-11-22 07:24:32,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 07:24:32,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 07:24:33,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 07:24:34,239 INFO L134 CoverageAnalysis]: Checked inductivity of 11704 backedges. 489 proven. 591 refuted. 0 times theorem prover too weak. 10624 trivial. 0 not checked. [2024-11-22 07:24:34,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 07:24:34,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2141761876] [2024-11-22 07:24:34,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2141761876] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 07:24:34,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2077725211] [2024-11-22 07:24:34,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 07:24:34,241 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 07:24:34,241 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 07:24:34,247 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 07:24:34,249 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-22 07:24:34,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 07:24:34,554 INFO L255 TraceCheckSpWp]: Trace formula consists of 1080 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-22 07:24:34,562 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 07:24:36,846 INFO L134 CoverageAnalysis]: Checked inductivity of 11704 backedges. 6534 proven. 474 refuted. 0 times theorem prover too weak. 4696 trivial. 0 not checked. [2024-11-22 07:24:36,846 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 07:24:39,099 INFO L134 CoverageAnalysis]: Checked inductivity of 11704 backedges. 402 proven. 492 refuted. 0 times theorem prover too weak. 10810 trivial. 0 not checked. [2024-11-22 07:24:39,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2077725211] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 07:24:39,099 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 07:24:39,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 16, 16] total 37 [2024-11-22 07:24:39,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136141684] [2024-11-22 07:24:39,100 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 07:24:39,101 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2024-11-22 07:24:39,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 07:24:39,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2024-11-22 07:24:39,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=266, Invalid=1066, Unknown=0, NotChecked=0, Total=1332 [2024-11-22 07:24:39,104 INFO L87 Difference]: Start difference. First operand 4017 states and 6352 transitions. Second operand has 37 states, 35 states have (on average 5.9714285714285715) internal successors, (209), 34 states have internal predecessors, (209), 14 states have call successors, (165), 5 states have call predecessors, (165), 12 states have return successors, (166), 14 states have call predecessors, (166), 14 states have call successors, (166) [2024-11-22 07:24:50,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 07:24:50,047 INFO L93 Difference]: Finished difference Result 14843 states and 22970 transitions. [2024-11-22 07:24:50,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 150 states. [2024-11-22 07:24:50,049 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 35 states have (on average 5.9714285714285715) internal successors, (209), 34 states have internal predecessors, (209), 14 states have call successors, (165), 5 states have call predecessors, (165), 12 states have return successors, (166), 14 states have call predecessors, (166), 14 states have call successors, (166) Word has length 486 [2024-11-22 07:24:50,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 07:24:50,089 INFO L225 Difference]: With dead ends: 14843 [2024-11-22 07:24:50,089 INFO L226 Difference]: Without dead ends: 10829 [2024-11-22 07:24:50,108 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1155 GetRequests, 980 SyntacticMatches, 0 SemanticMatches, 175 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12105 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=5731, Invalid=25421, Unknown=0, NotChecked=0, Total=31152 [2024-11-22 07:24:50,109 INFO L432 NwaCegarLoop]: 434 mSDtfsCounter, 8478 mSDsluCounter, 2076 mSDsCounter, 0 mSdLazyCounter, 3133 mSolverCounterSat, 3855 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8478 SdHoareTripleChecker+Valid, 2510 SdHoareTripleChecker+Invalid, 6988 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3855 IncrementalHoareTripleChecker+Valid, 3133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2024-11-22 07:24:50,109 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8478 Valid, 2510 Invalid, 6988 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3855 Valid, 3133 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2024-11-22 07:24:50,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10829 states. [2024-11-22 07:24:51,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10829 to 6009. [2024-11-22 07:24:51,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6009 states, 4844 states have (on average 1.5105284888521884) internal successors, (7317), 4868 states have internal predecessors, (7317), 1055 states have call successors, (1055), 109 states have call predecessors, (1055), 109 states have return successors, (1055), 1031 states have call predecessors, (1055), 1055 states have call successors, (1055) [2024-11-22 07:24:51,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6009 states to 6009 states and 9427 transitions. [2024-11-22 07:24:51,045 INFO L78 Accepts]: Start accepts. Automaton has 6009 states and 9427 transitions. Word has length 486 [2024-11-22 07:24:51,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 07:24:51,046 INFO L471 AbstractCegarLoop]: Abstraction has 6009 states and 9427 transitions. [2024-11-22 07:24:51,047 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 35 states have (on average 5.9714285714285715) internal successors, (209), 34 states have internal predecessors, (209), 14 states have call successors, (165), 5 states have call predecessors, (165), 12 states have return successors, (166), 14 states have call predecessors, (166), 14 states have call successors, (166) [2024-11-22 07:24:51,047 INFO L276 IsEmpty]: Start isEmpty. Operand 6009 states and 9427 transitions. [2024-11-22 07:24:51,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 488 [2024-11-22 07:24:51,056 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 07:24:51,056 INFO L215 NwaCegarLoop]: trace histogram [77, 77, 77, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 07:24:51,067 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-22 07:24:51,260 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-22 07:24:51,262 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 07:24:51,262 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 07:24:51,262 INFO L85 PathProgramCache]: Analyzing trace with hash 479850412, now seen corresponding path program 1 times [2024-11-22 07:24:51,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 07:24:51,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663238900] [2024-11-22 07:24:51,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 07:24:51,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 07:24:51,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 07:24:52,668 INFO L134 CoverageAnalysis]: Checked inductivity of 11704 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11704 trivial. 0 not checked. [2024-11-22 07:24:52,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 07:24:52,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [663238900] [2024-11-22 07:24:52,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [663238900] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 07:24:52,669 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 07:24:52,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-22 07:24:52,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259365894] [2024-11-22 07:24:52,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 07:24:52,669 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-22 07:24:52,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 07:24:52,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-22 07:24:52,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-22 07:24:52,670 INFO L87 Difference]: Start difference. First operand 6009 states and 9427 transitions. Second operand has 7 states, 7 states have (on average 15.0) internal successors, (105), 7 states have internal predecessors, (105), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) [2024-11-22 07:24:56,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 07:24:56,555 INFO L93 Difference]: Finished difference Result 25951 states and 39861 transitions. [2024-11-22 07:24:56,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-22 07:24:56,556 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.0) internal successors, (105), 7 states have internal predecessors, (105), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) Word has length 487 [2024-11-22 07:24:56,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 07:24:56,613 INFO L225 Difference]: With dead ends: 25951 [2024-11-22 07:24:56,613 INFO L226 Difference]: Without dead ends: 19945 [2024-11-22 07:24:56,628 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-11-22 07:24:56,629 INFO L432 NwaCegarLoop]: 568 mSDtfsCounter, 766 mSDsluCounter, 1457 mSDsCounter, 0 mSdLazyCounter, 527 mSolverCounterSat, 198 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 766 SdHoareTripleChecker+Valid, 2025 SdHoareTripleChecker+Invalid, 725 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 198 IncrementalHoareTripleChecker+Valid, 527 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-22 07:24:56,629 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [766 Valid, 2025 Invalid, 725 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [198 Valid, 527 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-22 07:24:56,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19945 states. [2024-11-22 07:24:57,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19945 to 9183. [2024-11-22 07:24:57,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9183 states, 7188 states have (on average 1.4881747356705621) internal successors, (10697), 7242 states have internal predecessors, (10697), 1820 states have call successors, (1820), 174 states have call predecessors, (1820), 174 states have return successors, (1820), 1766 states have call predecessors, (1820), 1820 states have call successors, (1820) [2024-11-22 07:24:57,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9183 states to 9183 states and 14337 transitions. [2024-11-22 07:24:57,949 INFO L78 Accepts]: Start accepts. Automaton has 9183 states and 14337 transitions. Word has length 487 [2024-11-22 07:24:57,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 07:24:57,950 INFO L471 AbstractCegarLoop]: Abstraction has 9183 states and 14337 transitions. [2024-11-22 07:24:57,950 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.0) internal successors, (105), 7 states have internal predecessors, (105), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) [2024-11-22 07:24:57,950 INFO L276 IsEmpty]: Start isEmpty. Operand 9183 states and 14337 transitions. [2024-11-22 07:24:57,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 488 [2024-11-22 07:24:57,955 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 07:24:57,956 INFO L215 NwaCegarLoop]: trace histogram [77, 77, 77, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 07:24:57,956 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-22 07:24:57,956 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 07:24:57,956 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 07:24:57,956 INFO L85 PathProgramCache]: Analyzing trace with hash 541890026, now seen corresponding path program 1 times [2024-11-22 07:24:57,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 07:24:57,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073028655] [2024-11-22 07:24:57,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 07:24:57,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 07:24:58,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 07:24:59,326 INFO L134 CoverageAnalysis]: Checked inductivity of 11704 backedges. 402 proven. 474 refuted. 0 times theorem prover too weak. 10828 trivial. 0 not checked. [2024-11-22 07:24:59,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 07:24:59,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2073028655] [2024-11-22 07:24:59,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2073028655] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 07:24:59,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1469898535] [2024-11-22 07:24:59,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 07:24:59,327 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 07:24:59,327 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 07:24:59,330 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 07:24:59,331 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-22 07:24:59,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 07:24:59,620 INFO L255 TraceCheckSpWp]: Trace formula consists of 1081 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-22 07:24:59,628 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 07:25:02,872 INFO L134 CoverageAnalysis]: Checked inductivity of 11704 backedges. 6418 proven. 591 refuted. 0 times theorem prover too weak. 4695 trivial. 0 not checked. [2024-11-22 07:25:02,872 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 07:25:04,716 INFO L134 CoverageAnalysis]: Checked inductivity of 11704 backedges. 402 proven. 492 refuted. 0 times theorem prover too weak. 10810 trivial. 0 not checked. [2024-11-22 07:25:04,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1469898535] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 07:25:04,716 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 07:25:04,717 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 20, 17] total 40 [2024-11-22 07:25:04,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804190988] [2024-11-22 07:25:04,717 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 07:25:04,718 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2024-11-22 07:25:04,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 07:25:04,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2024-11-22 07:25:04,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=327, Invalid=1233, Unknown=0, NotChecked=0, Total=1560 [2024-11-22 07:25:04,720 INFO L87 Difference]: Start difference. First operand 9183 states and 14337 transitions. Second operand has 40 states, 38 states have (on average 5.7894736842105265) internal successors, (220), 37 states have internal predecessors, (220), 13 states have call successors, (165), 6 states have call predecessors, (165), 12 states have return successors, (166), 13 states have call predecessors, (166), 13 states have call successors, (166) [2024-11-22 07:25:21,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 07:25:21,641 INFO L93 Difference]: Finished difference Result 37807 states and 57593 transitions. [2024-11-22 07:25:21,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 164 states. [2024-11-22 07:25:21,642 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 38 states have (on average 5.7894736842105265) internal successors, (220), 37 states have internal predecessors, (220), 13 states have call successors, (165), 6 states have call predecessors, (165), 12 states have return successors, (166), 13 states have call predecessors, (166), 13 states have call successors, (166) Word has length 487 [2024-11-22 07:25:21,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 07:25:21,793 INFO L225 Difference]: With dead ends: 37807 [2024-11-22 07:25:21,793 INFO L226 Difference]: Without dead ends: 28627 [2024-11-22 07:25:21,834 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1158 GetRequests, 976 SyntacticMatches, 0 SemanticMatches, 182 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12662 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=6319, Invalid=27353, Unknown=0, NotChecked=0, Total=33672 [2024-11-22 07:25:21,835 INFO L432 NwaCegarLoop]: 634 mSDtfsCounter, 3547 mSDsluCounter, 3658 mSDsCounter, 0 mSdLazyCounter, 3903 mSolverCounterSat, 1766 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3579 SdHoareTripleChecker+Valid, 4292 SdHoareTripleChecker+Invalid, 5669 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1766 IncrementalHoareTripleChecker+Valid, 3903 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2024-11-22 07:25:21,835 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3579 Valid, 4292 Invalid, 5669 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1766 Valid, 3903 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2024-11-22 07:25:21,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28627 states. [2024-11-22 07:25:23,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28627 to 8183. [2024-11-22 07:25:23,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8183 states, 6521 states have (on average 1.5002300260696213) internal successors, (9783), 6563 states have internal predecessors, (9783), 1510 states have call successors, (1510), 151 states have call predecessors, (1510), 151 states have return successors, (1510), 1468 states have call predecessors, (1510), 1510 states have call successors, (1510) [2024-11-22 07:25:23,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8183 states to 8183 states and 12803 transitions. [2024-11-22 07:25:23,408 INFO L78 Accepts]: Start accepts. Automaton has 8183 states and 12803 transitions. Word has length 487 [2024-11-22 07:25:23,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 07:25:23,409 INFO L471 AbstractCegarLoop]: Abstraction has 8183 states and 12803 transitions. [2024-11-22 07:25:23,410 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 38 states have (on average 5.7894736842105265) internal successors, (220), 37 states have internal predecessors, (220), 13 states have call successors, (165), 6 states have call predecessors, (165), 12 states have return successors, (166), 13 states have call predecessors, (166), 13 states have call successors, (166) [2024-11-22 07:25:23,410 INFO L276 IsEmpty]: Start isEmpty. Operand 8183 states and 12803 transitions. [2024-11-22 07:25:23,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 489 [2024-11-22 07:25:23,418 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 07:25:23,418 INFO L215 NwaCegarLoop]: trace histogram [77, 77, 77, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 07:25:23,440 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-22 07:25:23,623 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 07:25:23,624 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 07:25:23,624 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 07:25:23,624 INFO L85 PathProgramCache]: Analyzing trace with hash -2023528253, now seen corresponding path program 1 times [2024-11-22 07:25:23,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 07:25:23,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202545023] [2024-11-22 07:25:23,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 07:25:23,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 07:25:23,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-22 07:25:23,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [838444374] [2024-11-22 07:25:23,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 07:25:23,827 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 07:25:23,827 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 07:25:23,829 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 07:25:23,834 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-22 07:25:24,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 07:25:24,187 INFO L255 TraceCheckSpWp]: Trace formula consists of 1078 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-22 07:25:24,194 INFO L278 TraceCheckSpWp]: Computing forward predicates...