./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-multidimensional/min-2-u.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3061b6dc Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/array-multidimensional/min-2-u.c -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 68785685c781649dca8a870a36ccbd5837fb99f65c0418361b1a73f7848e1bda --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-18 09:15:56,776 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-18 09:15:56,846 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-18 09:15:56,850 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-18 09:15:56,851 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-18 09:15:56,875 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-18 09:15:56,876 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-18 09:15:56,876 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-18 09:15:56,877 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-18 09:15:56,878 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-18 09:15:56,879 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-18 09:15:56,879 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-18 09:15:56,880 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-18 09:15:56,884 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-18 09:15:56,885 INFO L153 SettingsManager]: * Use SBE=true [2024-11-18 09:15:56,885 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-18 09:15:56,885 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-18 09:15:56,886 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-18 09:15:56,886 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-18 09:15:56,886 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-18 09:15:56,886 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-18 09:15:56,888 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-18 09:15:56,889 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-18 09:15:56,889 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-18 09:15:56,889 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-18 09:15:56,890 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-18 09:15:56,890 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-18 09:15:56,890 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-18 09:15:56,890 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-18 09:15:56,890 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-18 09:15:56,891 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-18 09:15:56,891 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-18 09:15:56,891 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 09:15:56,891 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-18 09:15:56,892 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-18 09:15:56,892 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-18 09:15:56,892 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-18 09:15:56,892 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-18 09:15:56,893 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-18 09:15:56,893 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-18 09:15:56,894 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-18 09:15:56,894 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-18 09:15:56,895 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 68785685c781649dca8a870a36ccbd5837fb99f65c0418361b1a73f7848e1bda [2024-11-18 09:15:57,154 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-18 09:15:57,182 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-18 09:15:57,186 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-18 09:15:57,187 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-18 09:15:57,188 INFO L274 PluginConnector]: CDTParser initialized [2024-11-18 09:15:57,189 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-multidimensional/min-2-u.c [2024-11-18 09:15:58,631 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-18 09:15:58,802 INFO L384 CDTParser]: Found 1 translation units. [2024-11-18 09:15:58,803 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-multidimensional/min-2-u.c [2024-11-18 09:15:58,812 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ed2d5d38f/ec88e085e6ca4d2bab8939ea0132e6b5/FLAG5cecd850e [2024-11-18 09:15:59,196 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ed2d5d38f/ec88e085e6ca4d2bab8939ea0132e6b5 [2024-11-18 09:15:59,198 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-18 09:15:59,199 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-18 09:15:59,201 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-18 09:15:59,201 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-18 09:15:59,208 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-18 09:15:59,209 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 09:15:59" (1/1) ... [2024-11-18 09:15:59,212 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5690fe11 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:15:59, skipping insertion in model container [2024-11-18 09:15:59,213 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 09:15:59" (1/1) ... [2024-11-18 09:15:59,237 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-18 09:15:59,406 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/array-multidimensional/min-2-u.c[319,332] [2024-11-18 09:15:59,424 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 09:15:59,432 INFO L200 MainTranslator]: Completed pre-run [2024-11-18 09:15:59,444 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/array-multidimensional/min-2-u.c[319,332] [2024-11-18 09:15:59,452 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 09:15:59,467 INFO L204 MainTranslator]: Completed translation [2024-11-18 09:15:59,468 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:15:59 WrapperNode [2024-11-18 09:15:59,468 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-18 09:15:59,469 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-18 09:15:59,469 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-18 09:15:59,470 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-18 09:15:59,477 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:15:59" (1/1) ... [2024-11-18 09:15:59,484 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:15:59" (1/1) ... [2024-11-18 09:15:59,502 INFO L138 Inliner]: procedures = 14, calls = 16, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 83 [2024-11-18 09:15:59,503 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-18 09:15:59,504 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-18 09:15:59,504 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-18 09:15:59,504 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-18 09:15:59,512 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:15:59" (1/1) ... [2024-11-18 09:15:59,512 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:15:59" (1/1) ... [2024-11-18 09:15:59,514 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:15:59" (1/1) ... [2024-11-18 09:15:59,527 INFO L175 MemorySlicer]: Split 7 memory accesses to 2 slices as follows [2, 5]. 71 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2024-11-18 09:15:59,527 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:15:59" (1/1) ... [2024-11-18 09:15:59,527 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:15:59" (1/1) ... [2024-11-18 09:15:59,532 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:15:59" (1/1) ... [2024-11-18 09:15:59,538 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:15:59" (1/1) ... [2024-11-18 09:15:59,540 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:15:59" (1/1) ... [2024-11-18 09:15:59,541 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:15:59" (1/1) ... [2024-11-18 09:15:59,543 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-18 09:15:59,544 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-18 09:15:59,544 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-18 09:15:59,544 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-18 09:15:59,545 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:15:59" (1/1) ... [2024-11-18 09:15:59,550 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 09:15:59,561 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:15:59,588 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-18 09:15:59,592 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-18 09:15:59,641 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-18 09:15:59,641 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-18 09:15:59,642 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-18 09:15:59,642 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-18 09:15:59,642 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-18 09:15:59,642 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-18 09:15:59,642 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-18 09:15:59,644 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-18 09:15:59,644 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-18 09:15:59,644 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-18 09:15:59,644 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-18 09:15:59,747 INFO L238 CfgBuilder]: Building ICFG [2024-11-18 09:15:59,749 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-18 09:15:59,961 INFO L? ?]: Removed 17 outVars from TransFormulas that were not future-live. [2024-11-18 09:15:59,961 INFO L287 CfgBuilder]: Performing block encoding [2024-11-18 09:15:59,972 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-18 09:15:59,972 INFO L316 CfgBuilder]: Removed 6 assume(true) statements. [2024-11-18 09:15:59,973 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 09:15:59 BoogieIcfgContainer [2024-11-18 09:15:59,973 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-18 09:15:59,976 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-18 09:15:59,976 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-18 09:15:59,980 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-18 09:15:59,981 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 09:15:59" (1/3) ... [2024-11-18 09:15:59,981 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@535df89e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 09:15:59, skipping insertion in model container [2024-11-18 09:15:59,982 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:15:59" (2/3) ... [2024-11-18 09:15:59,982 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@535df89e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 09:15:59, skipping insertion in model container [2024-11-18 09:15:59,982 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 09:15:59" (3/3) ... [2024-11-18 09:15:59,983 INFO L112 eAbstractionObserver]: Analyzing ICFG min-2-u.c [2024-11-18 09:16:00,002 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-18 09:16:00,003 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-18 09:16:00,052 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-18 09:16:00,057 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;@36a81c77, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-18 09:16:00,058 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-18 09:16:00,061 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 22 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:16:00,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-18 09:16:00,067 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:16:00,067 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:16:00,068 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:16:00,072 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:16:00,073 INFO L85 PathProgramCache]: Analyzing trace with hash 1824316411, now seen corresponding path program 1 times [2024-11-18 09:16:00,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:16:00,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182845107] [2024-11-18 09:16:00,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:16:00,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:16:00,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:16:00,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 09:16:00,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:16:00,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182845107] [2024-11-18 09:16:00,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [182845107] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 09:16:00,309 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 09:16:00,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 09:16:00,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592634369] [2024-11-18 09:16:00,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 09:16:00,316 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 09:16:00,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:16:00,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 09:16:00,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 09:16:00,344 INFO L87 Difference]: Start difference. First operand has 23 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 22 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:16:00,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:16:00,435 INFO L93 Difference]: Finished difference Result 47 states and 77 transitions. [2024-11-18 09:16:00,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 09:16:00,439 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2024-11-18 09:16:00,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:16:00,447 INFO L225 Difference]: With dead ends: 47 [2024-11-18 09:16:00,448 INFO L226 Difference]: Without dead ends: 22 [2024-11-18 09:16:00,450 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 09:16:00,455 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 3 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 09:16:00,456 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 38 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 09:16:00,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2024-11-18 09:16:00,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 20. [2024-11-18 09:16:00,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.368421052631579) internal successors, (26), 19 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:16:00,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 26 transitions. [2024-11-18 09:16:00,523 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 26 transitions. Word has length 10 [2024-11-18 09:16:00,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:16:00,524 INFO L471 AbstractCegarLoop]: Abstraction has 20 states and 26 transitions. [2024-11-18 09:16:00,524 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:16:00,524 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 26 transitions. [2024-11-18 09:16:00,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-18 09:16:00,525 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:16:00,525 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:16:00,525 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-18 09:16:00,525 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:16:00,526 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:16:00,526 INFO L85 PathProgramCache]: Analyzing trace with hash 435710502, now seen corresponding path program 1 times [2024-11-18 09:16:00,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:16:00,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300626664] [2024-11-18 09:16:00,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:16:00,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:16:00,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:16:00,684 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 09:16:00,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:16:00,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300626664] [2024-11-18 09:16:00,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [300626664] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 09:16:00,685 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 09:16:00,686 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 09:16:00,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712189473] [2024-11-18 09:16:00,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 09:16:00,689 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 09:16:00,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:16:00,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 09:16:00,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-18 09:16:00,690 INFO L87 Difference]: Start difference. First operand 20 states and 26 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:16:00,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:16:00,761 INFO L93 Difference]: Finished difference Result 46 states and 62 transitions. [2024-11-18 09:16:00,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 09:16:00,761 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2024-11-18 09:16:00,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:16:00,762 INFO L225 Difference]: With dead ends: 46 [2024-11-18 09:16:00,762 INFO L226 Difference]: Without dead ends: 29 [2024-11-18 09:16:00,763 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-18 09:16:00,764 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 30 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 09:16:00,765 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 25 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 09:16:00,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2024-11-18 09:16:00,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 23. [2024-11-18 09:16:00,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.3181818181818181) internal successors, (29), 22 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:16:00,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 29 transitions. [2024-11-18 09:16:00,772 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 29 transitions. Word has length 13 [2024-11-18 09:16:00,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:16:00,772 INFO L471 AbstractCegarLoop]: Abstraction has 23 states and 29 transitions. [2024-11-18 09:16:00,772 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:16:00,772 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 29 transitions. [2024-11-18 09:16:00,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-18 09:16:00,773 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:16:00,773 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:16:00,773 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-18 09:16:00,774 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:16:00,774 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:16:00,774 INFO L85 PathProgramCache]: Analyzing trace with hash -263900950, now seen corresponding path program 1 times [2024-11-18 09:16:00,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:16:00,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065438542] [2024-11-18 09:16:00,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:16:00,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:16:00,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:16:00,929 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-18 09:16:00,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:16:00,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065438542] [2024-11-18 09:16:00,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2065438542] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 09:16:00,932 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 09:16:00,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 09:16:00,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467971845] [2024-11-18 09:16:00,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 09:16:00,933 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 09:16:00,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:16:00,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 09:16:00,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-18 09:16:00,935 INFO L87 Difference]: Start difference. First operand 23 states and 29 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:16:01,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:16:01,007 INFO L93 Difference]: Finished difference Result 49 states and 61 transitions. [2024-11-18 09:16:01,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 09:16:01,007 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2024-11-18 09:16:01,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:16:01,009 INFO L225 Difference]: With dead ends: 49 [2024-11-18 09:16:01,010 INFO L226 Difference]: Without dead ends: 40 [2024-11-18 09:16:01,010 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-18 09:16:01,011 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 48 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 09:16:01,011 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 18 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 09:16:01,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2024-11-18 09:16:01,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 24. [2024-11-18 09:16:01,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 23 states have (on average 1.3043478260869565) internal successors, (30), 23 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:16:01,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 30 transitions. [2024-11-18 09:16:01,025 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 30 transitions. Word has length 14 [2024-11-18 09:16:01,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:16:01,025 INFO L471 AbstractCegarLoop]: Abstraction has 24 states and 30 transitions. [2024-11-18 09:16:01,025 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:16:01,025 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 30 transitions. [2024-11-18 09:16:01,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-18 09:16:01,026 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:16:01,026 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:16:01,026 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-18 09:16:01,026 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:16:01,030 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:16:01,030 INFO L85 PathProgramCache]: Analyzing trace with hash -359141244, now seen corresponding path program 1 times [2024-11-18 09:16:01,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:16:01,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554021659] [2024-11-18 09:16:01,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:16:01,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:16:01,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:16:01,149 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-18 09:16:01,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:16:01,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554021659] [2024-11-18 09:16:01,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1554021659] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:16:01,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [734813651] [2024-11-18 09:16:01,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:16:01,151 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:16:01,151 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:16:01,153 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 09:16:01,155 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-18 09:16:01,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:16:01,233 INFO L255 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-18 09:16:01,238 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:16:01,312 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-18 09:16:01,313 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 09:16:01,349 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-18 09:16:01,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [734813651] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 09:16:01,351 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 09:16:01,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-11-18 09:16:01,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425103559] [2024-11-18 09:16:01,352 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 09:16:01,352 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-18 09:16:01,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:16:01,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-18 09:16:01,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2024-11-18 09:16:01,355 INFO L87 Difference]: Start difference. First operand 24 states and 30 transitions. Second operand has 10 states, 10 states have (on average 2.7) internal successors, (27), 10 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:16:01,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:16:01,497 INFO L93 Difference]: Finished difference Result 72 states and 96 transitions. [2024-11-18 09:16:01,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-18 09:16:01,498 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.7) internal successors, (27), 10 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2024-11-18 09:16:01,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:16:01,499 INFO L225 Difference]: With dead ends: 72 [2024-11-18 09:16:01,499 INFO L226 Difference]: Without dead ends: 51 [2024-11-18 09:16:01,499 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2024-11-18 09:16:01,500 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 103 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 09:16:01,501 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 49 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 09:16:01,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2024-11-18 09:16:01,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 45. [2024-11-18 09:16:01,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 44 states have (on average 1.2954545454545454) internal successors, (57), 44 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:16:01,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 57 transitions. [2024-11-18 09:16:01,511 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 57 transitions. Word has length 20 [2024-11-18 09:16:01,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:16:01,511 INFO L471 AbstractCegarLoop]: Abstraction has 45 states and 57 transitions. [2024-11-18 09:16:01,511 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.7) internal successors, (27), 10 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:16:01,512 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 57 transitions. [2024-11-18 09:16:01,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-11-18 09:16:01,512 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:16:01,512 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:16:01,527 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-18 09:16:01,713 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:16:01,714 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:16:01,714 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:16:01,714 INFO L85 PathProgramCache]: Analyzing trace with hash 1223950390, now seen corresponding path program 2 times [2024-11-18 09:16:01,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:16:01,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217301731] [2024-11-18 09:16:01,715 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 09:16:01,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:16:01,758 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 09:16:01,759 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:16:01,868 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2024-11-18 09:16:01,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:16:01,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1217301731] [2024-11-18 09:16:01,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1217301731] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:16:01,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [853925598] [2024-11-18 09:16:01,869 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 09:16:01,869 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:16:01,869 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:16:01,872 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) [2024-11-18 09:16:01,875 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-18 09:16:01,954 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 09:16:01,955 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:16:01,957 INFO L255 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-18 09:16:01,958 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:16:02,059 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-18 09:16:02,061 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 09:16:02,165 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-18 09:16:02,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [853925598] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 09:16:02,167 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 09:16:02,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 8, 8] total 16 [2024-11-18 09:16:02,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435585458] [2024-11-18 09:16:02,168 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 09:16:02,168 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-18 09:16:02,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:16:02,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-18 09:16:02,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=154, Unknown=0, NotChecked=0, Total=240 [2024-11-18 09:16:02,171 INFO L87 Difference]: Start difference. First operand 45 states and 57 transitions. Second operand has 16 states, 16 states have (on average 2.25) internal successors, (36), 16 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:16:02,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:16:02,825 INFO L93 Difference]: Finished difference Result 172 states and 232 transitions. [2024-11-18 09:16:02,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2024-11-18 09:16:02,825 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.25) internal successors, (36), 16 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2024-11-18 09:16:02,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:16:02,826 INFO L225 Difference]: With dead ends: 172 [2024-11-18 09:16:02,827 INFO L226 Difference]: Without dead ends: 130 [2024-11-18 09:16:02,828 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 468 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=643, Invalid=1163, Unknown=0, NotChecked=0, Total=1806 [2024-11-18 09:16:02,828 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 310 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 310 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 09:16:02,829 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [310 Valid, 77 Invalid, 192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 09:16:02,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2024-11-18 09:16:02,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 100. [2024-11-18 09:16:02,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 99 states have (on average 1.2626262626262625) internal successors, (125), 99 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:16:02,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 125 transitions. [2024-11-18 09:16:02,851 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 125 transitions. Word has length 32 [2024-11-18 09:16:02,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:16:02,852 INFO L471 AbstractCegarLoop]: Abstraction has 100 states and 125 transitions. [2024-11-18 09:16:02,852 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.25) internal successors, (36), 16 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:16:02,852 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 125 transitions. [2024-11-18 09:16:02,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-18 09:16:02,855 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:16:02,855 INFO L215 NwaCegarLoop]: trace histogram [20, 10, 10, 10, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:16:02,873 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-18 09:16:03,056 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:16:03,057 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:16:03,057 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:16:03,057 INFO L85 PathProgramCache]: Analyzing trace with hash -1762209951, now seen corresponding path program 3 times [2024-11-18 09:16:03,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:16:03,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877671266] [2024-11-18 09:16:03,057 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-18 09:16:03,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:16:03,092 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-18 09:16:03,092 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:16:03,128 INFO L134 CoverageAnalysis]: Checked inductivity of 381 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2024-11-18 09:16:03,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:16:03,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877671266] [2024-11-18 09:16:03,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [877671266] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:16:03,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1743352586] [2024-11-18 09:16:03,129 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-18 09:16:03,129 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:16:03,129 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:16:03,132 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) [2024-11-18 09:16:03,134 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-18 09:16:03,206 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-18 09:16:03,207 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:16:03,208 INFO L255 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-18 09:16:03,210 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:16:03,365 INFO L134 CoverageAnalysis]: Checked inductivity of 381 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2024-11-18 09:16:03,366 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 09:16:03,466 INFO L134 CoverageAnalysis]: Checked inductivity of 381 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2024-11-18 09:16:03,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1743352586] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 09:16:03,466 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 09:16:03,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-11-18 09:16:03,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88307850] [2024-11-18 09:16:03,467 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 09:16:03,468 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-18 09:16:03,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:16:03,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-18 09:16:03,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2024-11-18 09:16:03,469 INFO L87 Difference]: Start difference. First operand 100 states and 125 transitions. Second operand has 10 states, 10 states have (on average 4.2) internal successors, (42), 10 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:16:03,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:16:03,592 INFO L93 Difference]: Finished difference Result 379 states and 485 transitions. [2024-11-18 09:16:03,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-18 09:16:03,593 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.2) internal successors, (42), 10 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2024-11-18 09:16:03,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:16:03,597 INFO L225 Difference]: With dead ends: 379 [2024-11-18 09:16:03,597 INFO L226 Difference]: Without dead ends: 343 [2024-11-18 09:16:03,598 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2024-11-18 09:16:03,599 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 161 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 09:16:03,599 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [161 Valid, 31 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 09:16:03,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2024-11-18 09:16:03,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 199. [2024-11-18 09:16:03,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 198 states have (on average 1.297979797979798) internal successors, (257), 198 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:16:03,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 257 transitions. [2024-11-18 09:16:03,661 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 257 transitions. Word has length 69 [2024-11-18 09:16:03,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:16:03,662 INFO L471 AbstractCegarLoop]: Abstraction has 199 states and 257 transitions. [2024-11-18 09:16:03,663 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.2) internal successors, (42), 10 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:16:03,663 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 257 transitions. [2024-11-18 09:16:03,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2024-11-18 09:16:03,666 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:16:03,666 INFO L215 NwaCegarLoop]: trace histogram [40, 40, 40, 20, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:16:03,683 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-18 09:16:03,869 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:16:03,870 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:16:03,871 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:16:03,871 INFO L85 PathProgramCache]: Analyzing trace with hash -2027623589, now seen corresponding path program 4 times [2024-11-18 09:16:03,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:16:03,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881731222] [2024-11-18 09:16:03,871 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-18 09:16:03,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:16:03,994 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-18 09:16:03,994 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:16:04,632 INFO L134 CoverageAnalysis]: Checked inductivity of 2757 backedges. 117 proven. 1970 refuted. 0 times theorem prover too weak. 670 trivial. 0 not checked. [2024-11-18 09:16:04,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:16:04,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881731222] [2024-11-18 09:16:04,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [881731222] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:16:04,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2143371793] [2024-11-18 09:16:04,633 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-18 09:16:04,633 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:16:04,633 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:16:04,635 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) [2024-11-18 09:16:04,639 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-18 09:16:04,779 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-18 09:16:04,780 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:16:04,783 INFO L255 TraceCheckSpWp]: Trace formula consists of 383 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-18 09:16:04,791 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:16:05,576 INFO L134 CoverageAnalysis]: Checked inductivity of 2757 backedges. 117 proven. 1970 refuted. 0 times theorem prover too weak. 670 trivial. 0 not checked. [2024-11-18 09:16:05,577 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 09:16:05,993 INFO L134 CoverageAnalysis]: Checked inductivity of 2757 backedges. 117 proven. 1970 refuted. 0 times theorem prover too weak. 670 trivial. 0 not checked. [2024-11-18 09:16:05,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2143371793] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 09:16:05,994 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 09:16:05,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 44 [2024-11-18 09:16:05,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790950741] [2024-11-18 09:16:05,994 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 09:16:05,996 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2024-11-18 09:16:05,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:16:05,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2024-11-18 09:16:05,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=462, Invalid=1430, Unknown=0, NotChecked=0, Total=1892 [2024-11-18 09:16:05,998 INFO L87 Difference]: Start difference. First operand 199 states and 257 transitions. Second operand has 44 states, 44 states have (on average 3.590909090909091) internal successors, (158), 44 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:16:13,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:16:13,391 INFO L93 Difference]: Finished difference Result 2608 states and 3168 transitions. [2024-11-18 09:16:13,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 251 states. [2024-11-18 09:16:13,391 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 3.590909090909091) internal successors, (158), 44 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 168 [2024-11-18 09:16:13,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:16:13,401 INFO L225 Difference]: With dead ends: 2608 [2024-11-18 09:16:13,401 INFO L226 Difference]: Without dead ends: 2572 [2024-11-18 09:16:13,420 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 793 GetRequests, 512 SyntacticMatches, 5 SemanticMatches, 276 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37745 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=19232, Invalid=57774, Unknown=0, NotChecked=0, Total=77006 [2024-11-18 09:16:13,422 INFO L432 NwaCegarLoop]: 45 mSDtfsCounter, 1045 mSDsluCounter, 1008 mSDsCounter, 0 mSdLazyCounter, 2052 mSolverCounterSat, 347 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1045 SdHoareTripleChecker+Valid, 1053 SdHoareTripleChecker+Invalid, 2399 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 347 IncrementalHoareTripleChecker+Valid, 2052 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-18 09:16:13,422 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1045 Valid, 1053 Invalid, 2399 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [347 Valid, 2052 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-18 09:16:13,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2572 states. [2024-11-18 09:16:13,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2572 to 967. [2024-11-18 09:16:13,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 967 states, 966 states have (on average 1.3519668737060042) internal successors, (1306), 966 states have internal predecessors, (1306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:16:13,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 967 states to 967 states and 1306 transitions. [2024-11-18 09:16:13,541 INFO L78 Accepts]: Start accepts. Automaton has 967 states and 1306 transitions. Word has length 168 [2024-11-18 09:16:13,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:16:13,542 INFO L471 AbstractCegarLoop]: Abstraction has 967 states and 1306 transitions. [2024-11-18 09:16:13,542 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 3.590909090909091) internal successors, (158), 44 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:16:13,542 INFO L276 IsEmpty]: Start isEmpty. Operand 967 states and 1306 transitions. [2024-11-18 09:16:13,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 367 [2024-11-18 09:16:13,552 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:16:13,552 INFO L215 NwaCegarLoop]: trace histogram [100, 100, 100, 20, 10, 10, 10, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:16:13,570 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-18 09:16:13,756 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:16:13,757 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:16:13,757 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:16:13,757 INFO L85 PathProgramCache]: Analyzing trace with hash 1186338203, now seen corresponding path program 5 times [2024-11-18 09:16:13,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:16:13,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913184733] [2024-11-18 09:16:13,758 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-18 09:16:13,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:16:16,327 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 88 check-sat command(s) [2024-11-18 09:16:16,328 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:16:17,100 INFO L134 CoverageAnalysis]: Checked inductivity of 16230 backedges. 6781 proven. 787 refuted. 0 times theorem prover too weak. 8662 trivial. 0 not checked. [2024-11-18 09:16:17,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:16:17,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913184733] [2024-11-18 09:16:17,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [913184733] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:16:17,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [685183129] [2024-11-18 09:16:17,102 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-18 09:16:17,102 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:16:17,102 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:16:17,105 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) [2024-11-18 09:16:17,107 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-18 09:17:15,395 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 88 check-sat command(s) [2024-11-18 09:17:15,395 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:17:15,423 INFO L255 TraceCheckSpWp]: Trace formula consists of 1118 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-18 09:17:15,435 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:17:15,700 INFO L134 CoverageAnalysis]: Checked inductivity of 16230 backedges. 7423 proven. 145 refuted. 0 times theorem prover too weak. 8662 trivial. 0 not checked. [2024-11-18 09:17:15,700 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 09:17:16,045 INFO L134 CoverageAnalysis]: Checked inductivity of 16230 backedges. 6781 proven. 787 refuted. 0 times theorem prover too weak. 8662 trivial. 0 not checked. [2024-11-18 09:17:16,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [685183129] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 09:17:16,045 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 09:17:16,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 37 [2024-11-18 09:17:16,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793865750] [2024-11-18 09:17:16,046 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 09:17:16,047 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2024-11-18 09:17:16,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:17:16,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2024-11-18 09:17:16,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=567, Invalid=765, Unknown=0, NotChecked=0, Total=1332 [2024-11-18 09:17:16,048 INFO L87 Difference]: Start difference. First operand 967 states and 1306 transitions. Second operand has 37 states, 37 states have (on average 3.6486486486486487) internal successors, (135), 37 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:17:16,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:17:16,564 INFO L93 Difference]: Finished difference Result 2157 states and 3061 transitions. [2024-11-18 09:17:16,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-18 09:17:16,565 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 3.6486486486486487) internal successors, (135), 37 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 366 [2024-11-18 09:17:16,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:17:16,570 INFO L225 Difference]: With dead ends: 2157 [2024-11-18 09:17:16,570 INFO L226 Difference]: Without dead ends: 1204 [2024-11-18 09:17:16,573 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 755 GetRequests, 709 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 736 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=853, Invalid=1403, Unknown=0, NotChecked=0, Total=2256 [2024-11-18 09:17:16,573 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 538 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 186 mSolverCounterSat, 183 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 538 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 369 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 183 IncrementalHoareTripleChecker+Valid, 186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 09:17:16,574 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [538 Valid, 139 Invalid, 369 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [183 Valid, 186 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 09:17:16,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1204 states. [2024-11-18 09:17:16,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1204 to 1162. [2024-11-18 09:17:16,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1162 states, 1161 states have (on average 1.3204134366925064) internal successors, (1533), 1161 states have internal predecessors, (1533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:17:16,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1162 states to 1162 states and 1533 transitions. [2024-11-18 09:17:16,661 INFO L78 Accepts]: Start accepts. Automaton has 1162 states and 1533 transitions. Word has length 366 [2024-11-18 09:17:16,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:17:16,662 INFO L471 AbstractCegarLoop]: Abstraction has 1162 states and 1533 transitions. [2024-11-18 09:17:16,662 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 3.6486486486486487) internal successors, (135), 37 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:17:16,662 INFO L276 IsEmpty]: Start isEmpty. Operand 1162 states and 1533 transitions. [2024-11-18 09:17:16,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1096 [2024-11-18 09:17:16,692 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:17:16,692 INFO L215 NwaCegarLoop]: trace histogram [330, 330, 330, 44, 15, 15, 15, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:17:16,893 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forcibly destroying the process [2024-11-18 09:17:16,896 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-18 09:17:16,896 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:17:16,896 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:17:16,897 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:17:16,897 INFO L85 PathProgramCache]: Analyzing trace with hash -878710367, now seen corresponding path program 6 times [2024-11-18 09:17:16,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:17:16,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577272913] [2024-11-18 09:17:16,897 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-18 09:17:16,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:17:17,792 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 49 check-sat command(s) [2024-11-18 09:17:17,792 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:17:18,821 INFO L134 CoverageAnalysis]: Checked inductivity of 169174 backedges. 531 proven. 253 refuted. 0 times theorem prover too weak. 168390 trivial. 0 not checked. [2024-11-18 09:17:18,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:17:18,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577272913] [2024-11-18 09:17:18,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [577272913] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:17:18,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1154554962] [2024-11-18 09:17:18,822 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-18 09:17:18,822 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:17:18,822 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:17:18,824 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) [2024-11-18 09:17:18,825 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-18 09:17:19,081 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2024-11-18 09:17:19,082 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:17:19,084 INFO L255 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-18 09:17:19,098 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:17:19,253 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-18 09:17:19,301 INFO L134 CoverageAnalysis]: Checked inductivity of 169174 backedges. 688 proven. 0 refuted. 0 times theorem prover too weak. 168486 trivial. 0 not checked. [2024-11-18 09:17:19,301 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 09:17:19,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1154554962] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 09:17:19,301 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 09:17:19,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [26] total 30 [2024-11-18 09:17:19,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173043648] [2024-11-18 09:17:19,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 09:17:19,303 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 09:17:19,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:17:19,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 09:17:19,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=314, Invalid=556, Unknown=0, NotChecked=0, Total=870 [2024-11-18 09:17:19,305 INFO L87 Difference]: Start difference. First operand 1162 states and 1533 transitions. Second operand has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:17:19,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:17:19,500 INFO L93 Difference]: Finished difference Result 2330 states and 3089 transitions. [2024-11-18 09:17:19,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 09:17:19,501 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1095 [2024-11-18 09:17:19,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:17:19,506 INFO L225 Difference]: With dead ends: 2330 [2024-11-18 09:17:19,506 INFO L226 Difference]: Without dead ends: 1225 [2024-11-18 09:17:19,508 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1121 GetRequests, 1092 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=320, Invalid=610, Unknown=0, NotChecked=0, Total=930 [2024-11-18 09:17:19,510 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 30 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 09:17:19,511 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 47 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 09:17:19,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1225 states. [2024-11-18 09:17:19,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1225 to 1162. [2024-11-18 09:17:19,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1162 states, 1161 states have (on average 1.3195521102497847) internal successors, (1532), 1161 states have internal predecessors, (1532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:17:19,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1162 states to 1162 states and 1532 transitions. [2024-11-18 09:17:19,615 INFO L78 Accepts]: Start accepts. Automaton has 1162 states and 1532 transitions. Word has length 1095 [2024-11-18 09:17:19,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:17:19,615 INFO L471 AbstractCegarLoop]: Abstraction has 1162 states and 1532 transitions. [2024-11-18 09:17:19,616 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:17:19,616 INFO L276 IsEmpty]: Start isEmpty. Operand 1162 states and 1532 transitions. [2024-11-18 09:17:19,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1096 [2024-11-18 09:17:19,624 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:17:19,625 INFO L215 NwaCegarLoop]: trace histogram [330, 330, 329, 44, 15, 15, 15, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:17:19,644 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-18 09:17:19,826 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:17:19,826 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:17:19,827 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:17:19,827 INFO L85 PathProgramCache]: Analyzing trace with hash -452606429, now seen corresponding path program 1 times [2024-11-18 09:17:19,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:17:19,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653663804] [2024-11-18 09:17:19,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:17:19,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:17:20,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:17:23,040 INFO L134 CoverageAnalysis]: Checked inductivity of 169174 backedges. 531 proven. 253 refuted. 0 times theorem prover too weak. 168390 trivial. 0 not checked. [2024-11-18 09:17:23,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:17:23,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653663804] [2024-11-18 09:17:23,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1653663804] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:17:23,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [91951193] [2024-11-18 09:17:23,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:17:23,041 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:17:23,042 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:17:23,043 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) [2024-11-18 09:17:23,045 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-18 09:17:23,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:17:23,653 INFO L255 TraceCheckSpWp]: Trace formula consists of 3202 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-18 09:17:23,667 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:17:24,149 INFO L134 CoverageAnalysis]: Checked inductivity of 169174 backedges. 531 proven. 253 refuted. 0 times theorem prover too weak. 168390 trivial. 0 not checked. [2024-11-18 09:17:24,149 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 09:17:24,860 INFO L134 CoverageAnalysis]: Checked inductivity of 169174 backedges. 531 proven. 253 refuted. 0 times theorem prover too weak. 168390 trivial. 0 not checked. [2024-11-18 09:17:24,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [91951193] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 09:17:24,860 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 09:17:24,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26, 26] total 73 [2024-11-18 09:17:24,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504209132] [2024-11-18 09:17:24,861 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 09:17:24,862 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 73 states [2024-11-18 09:17:24,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:17:24,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2024-11-18 09:17:24,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2307, Invalid=2949, Unknown=0, NotChecked=0, Total=5256 [2024-11-18 09:17:24,865 INFO L87 Difference]: Start difference. First operand 1162 states and 1532 transitions. Second operand has 73 states, 73 states have (on average 1.2876712328767124) internal successors, (94), 73 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:17:26,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:17:26,431 INFO L93 Difference]: Finished difference Result 3588 states and 5098 transitions. [2024-11-18 09:17:26,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2024-11-18 09:17:26,432 INFO L78 Accepts]: Start accepts. Automaton has has 73 states, 73 states have (on average 1.2876712328767124) internal successors, (94), 73 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1095 [2024-11-18 09:17:26,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:17:26,441 INFO L225 Difference]: With dead ends: 3588 [2024-11-18 09:17:26,442 INFO L226 Difference]: Without dead ends: 2452 [2024-11-18 09:17:26,444 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2237 GetRequests, 2143 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3217 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=3480, Invalid=5640, Unknown=0, NotChecked=0, Total=9120 [2024-11-18 09:17:26,445 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 1588 mSDsluCounter, 268 mSDsCounter, 0 mSdLazyCounter, 389 mSolverCounterSat, 365 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1588 SdHoareTripleChecker+Valid, 281 SdHoareTripleChecker+Invalid, 754 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 365 IncrementalHoareTripleChecker+Valid, 389 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-18 09:17:26,445 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1588 Valid, 281 Invalid, 754 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [365 Valid, 389 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-18 09:17:26,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2452 states. [2024-11-18 09:17:26,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2452 to 2362. [2024-11-18 09:17:26,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2362 states, 2361 states have (on average 1.3197797543413807) internal successors, (3116), 2361 states have internal predecessors, (3116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:17:26,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2362 states to 2362 states and 3116 transitions. [2024-11-18 09:17:26,723 INFO L78 Accepts]: Start accepts. Automaton has 2362 states and 3116 transitions. Word has length 1095 [2024-11-18 09:17:26,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:17:26,724 INFO L471 AbstractCegarLoop]: Abstraction has 2362 states and 3116 transitions. [2024-11-18 09:17:26,724 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 73 states, 73 states have (on average 1.2876712328767124) internal successors, (94), 73 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:17:26,725 INFO L276 IsEmpty]: Start isEmpty. Operand 2362 states and 3116 transitions. [2024-11-18 09:17:26,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2224 [2024-11-18 09:17:26,777 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:17:26,778 INFO L215 NwaCegarLoop]: trace histogram [690, 690, 689, 92, 15, 15, 15, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:17:26,797 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-18 09:17:26,978 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:17:26,979 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:17:26,979 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:17:26,980 INFO L85 PathProgramCache]: Analyzing trace with hash 443819811, now seen corresponding path program 2 times [2024-11-18 09:17:26,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:17:26,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682534233] [2024-11-18 09:17:26,980 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 09:17:26,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:17:27,532 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 09:17:27,532 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat