./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops-crafted-1/mono-crafted_3.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 61a67961 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops-crafted-1/mono-crafted_3.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 4548c451706b7658e6a882e8eef66dc3c360e6aea0e4326d7cc0b87e2b58239c --- Real Ultimate output --- This is Ultimate 0.2.5-wip.fs.cvc5-61a6796-m [2024-10-14 02:06:10,223 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-14 02:06:10,298 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-14 02:06:10,303 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-14 02:06:10,305 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-14 02:06:10,335 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-14 02:06:10,336 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-14 02:06:10,336 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-14 02:06:10,337 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-14 02:06:10,339 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-14 02:06:10,339 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-14 02:06:10,340 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-14 02:06:10,340 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-14 02:06:10,340 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-14 02:06:10,341 INFO L153 SettingsManager]: * Use SBE=true [2024-10-14 02:06:10,341 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-14 02:06:10,341 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-14 02:06:10,342 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-14 02:06:10,342 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-14 02:06:10,343 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-14 02:06:10,343 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-14 02:06:10,343 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-14 02:06:10,344 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-14 02:06:10,344 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-14 02:06:10,344 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-14 02:06:10,344 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-14 02:06:10,345 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-14 02:06:10,345 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-14 02:06:10,345 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-14 02:06:10,346 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-14 02:06:10,346 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-14 02:06:10,346 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-14 02:06:10,346 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 02:06:10,347 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-14 02:06:10,347 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-14 02:06:10,347 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-14 02:06:10,347 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-14 02:06:10,348 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-14 02:06:10,348 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-14 02:06:10,348 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-14 02:06:10,348 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-14 02:06:10,350 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-14 02:06:10,350 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4548c451706b7658e6a882e8eef66dc3c360e6aea0e4326d7cc0b87e2b58239c [2024-10-14 02:06:10,574 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-14 02:06:10,596 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-14 02:06:10,600 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-14 02:06:10,601 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-14 02:06:10,602 INFO L274 PluginConnector]: CDTParser initialized [2024-10-14 02:06:10,603 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops-crafted-1/mono-crafted_3.c [2024-10-14 02:06:12,071 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-14 02:06:12,233 INFO L384 CDTParser]: Found 1 translation units. [2024-10-14 02:06:12,233 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops-crafted-1/mono-crafted_3.c [2024-10-14 02:06:12,239 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0e2d4ac1e/74296bac28054eb0b224c207eec336b4/FLAG7c13b1f74 [2024-10-14 02:06:12,254 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0e2d4ac1e/74296bac28054eb0b224c207eec336b4 [2024-10-14 02:06:12,259 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-14 02:06:12,260 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-14 02:06:12,261 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-14 02:06:12,261 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-14 02:06:12,267 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-14 02:06:12,267 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 02:06:12" (1/1) ... [2024-10-14 02:06:12,268 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@32cdb1d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:06:12, skipping insertion in model container [2024-10-14 02:06:12,268 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 02:06:12" (1/1) ... [2024-10-14 02:06:12,287 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-14 02:06:12,472 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops-crafted-1/mono-crafted_3.c[318,331] [2024-10-14 02:06:12,486 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 02:06:12,494 INFO L200 MainTranslator]: Completed pre-run [2024-10-14 02:06:12,504 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops-crafted-1/mono-crafted_3.c[318,331] [2024-10-14 02:06:12,507 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 02:06:12,523 INFO L204 MainTranslator]: Completed translation [2024-10-14 02:06:12,523 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:06:12 WrapperNode [2024-10-14 02:06:12,523 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-14 02:06:12,524 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-14 02:06:12,524 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-14 02:06:12,524 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-14 02:06:12,531 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:06:12" (1/1) ... [2024-10-14 02:06:12,535 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:06:12" (1/1) ... [2024-10-14 02:06:12,548 INFO L138 Inliner]: procedures = 12, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 45 [2024-10-14 02:06:12,548 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-14 02:06:12,549 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-14 02:06:12,549 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-14 02:06:12,549 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-14 02:06:12,556 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:06:12" (1/1) ... [2024-10-14 02:06:12,556 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:06:12" (1/1) ... [2024-10-14 02:06:12,557 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:06:12" (1/1) ... [2024-10-14 02:06:12,564 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-10-14 02:06:12,564 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:06:12" (1/1) ... [2024-10-14 02:06:12,564 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:06:12" (1/1) ... [2024-10-14 02:06:12,566 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:06:12" (1/1) ... [2024-10-14 02:06:12,569 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:06:12" (1/1) ... [2024-10-14 02:06:12,569 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:06:12" (1/1) ... [2024-10-14 02:06:12,570 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:06:12" (1/1) ... [2024-10-14 02:06:12,571 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-14 02:06:12,572 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-14 02:06:12,572 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-14 02:06:12,572 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-14 02:06:12,573 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:06:12" (1/1) ... [2024-10-14 02:06:12,577 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 02:06:12,586 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 02:06:12,602 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) [2024-10-14 02:06:12,605 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 [2024-10-14 02:06:12,650 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-14 02:06:12,650 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-14 02:06:12,651 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-14 02:06:12,651 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-14 02:06:12,711 INFO L238 CfgBuilder]: Building ICFG [2024-10-14 02:06:12,713 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-14 02:06:12,828 INFO L? ?]: Removed 9 outVars from TransFormulas that were not future-live. [2024-10-14 02:06:12,829 INFO L287 CfgBuilder]: Performing block encoding [2024-10-14 02:06:12,860 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-14 02:06:12,860 INFO L314 CfgBuilder]: Removed 2 assume(true) statements. [2024-10-14 02:06:12,861 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 02:06:12 BoogieIcfgContainer [2024-10-14 02:06:12,861 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-14 02:06:12,864 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-14 02:06:12,864 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-14 02:06:12,867 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-14 02:06:12,867 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 02:06:12" (1/3) ... [2024-10-14 02:06:12,868 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71a873d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 02:06:12, skipping insertion in model container [2024-10-14 02:06:12,869 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:06:12" (2/3) ... [2024-10-14 02:06:12,869 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71a873d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 02:06:12, skipping insertion in model container [2024-10-14 02:06:12,869 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 02:06:12" (3/3) ... [2024-10-14 02:06:12,871 INFO L112 eAbstractionObserver]: Analyzing ICFG mono-crafted_3.c [2024-10-14 02:06:12,886 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-14 02:06:12,887 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-14 02:06:12,953 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-14 02:06:12,961 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;@661d5dea, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-14 02:06:12,961 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-14 02:06:12,966 INFO L276 IsEmpty]: Start isEmpty. Operand has 10 states, 8 states have (on average 1.875) internal successors, (15), 9 states have internal predecessors, (15), 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) [2024-10-14 02:06:12,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-10-14 02:06:12,971 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 02:06:12,972 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-10-14 02:06:12,973 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 02:06:12,978 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 02:06:12,979 INFO L85 PathProgramCache]: Analyzing trace with hash -2043540179, now seen corresponding path program 1 times [2024-10-14 02:06:12,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 02:06:12,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115311719] [2024-10-14 02:06:12,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 02:06:12,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 02:06:13,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:06:13,130 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 02:06:13,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 02:06:13,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2115311719] [2024-10-14 02:06:13,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2115311719] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 02:06:13,131 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 02:06:13,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 02:06:13,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127888297] [2024-10-14 02:06:13,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 02:06:13,138 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-14 02:06:13,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 02:06:13,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-14 02:06:13,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-14 02:06:13,167 INFO L87 Difference]: Start difference. First operand has 10 states, 8 states have (on average 1.875) internal successors, (15), 9 states have internal predecessors, (15), 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 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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) [2024-10-14 02:06:13,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 02:06:13,182 INFO L93 Difference]: Finished difference Result 17 states and 24 transitions. [2024-10-14 02:06:13,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-14 02:06:13,185 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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 6 [2024-10-14 02:06:13,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 02:06:13,191 INFO L225 Difference]: With dead ends: 17 [2024-10-14 02:06:13,192 INFO L226 Difference]: Without dead ends: 8 [2024-10-14 02:06:13,193 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-14 02:06:13,196 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-14 02:06:13,197 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 10 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-14 02:06:13,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2024-10-14 02:06:13,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2024-10-14 02:06:13,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 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) [2024-10-14 02:06:13,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 10 transitions. [2024-10-14 02:06:13,222 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 10 transitions. Word has length 6 [2024-10-14 02:06:13,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 02:06:13,223 INFO L471 AbstractCegarLoop]: Abstraction has 8 states and 10 transitions. [2024-10-14 02:06:13,223 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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) [2024-10-14 02:06:13,223 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 10 transitions. [2024-10-14 02:06:13,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-10-14 02:06:13,224 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 02:06:13,224 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-10-14 02:06:13,224 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-14 02:06:13,225 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 02:06:13,225 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 02:06:13,225 INFO L85 PathProgramCache]: Analyzing trace with hash -2052775389, now seen corresponding path program 1 times [2024-10-14 02:06:13,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 02:06:13,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263431145] [2024-10-14 02:06:13,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 02:06:13,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 02:06:13,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:06:13,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 02:06:13,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 02:06:13,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263431145] [2024-10-14 02:06:13,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [263431145] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 02:06:13,311 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 02:06:13,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 02:06:13,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385223318] [2024-10-14 02:06:13,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 02:06:13,312 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 02:06:13,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 02:06:13,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 02:06:13,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 02:06:13,313 INFO L87 Difference]: Start difference. First operand 8 states and 10 transitions. Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 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) [2024-10-14 02:06:13,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 02:06:13,333 INFO L93 Difference]: Finished difference Result 17 states and 23 transitions. [2024-10-14 02:06:13,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 02:06:13,333 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 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 6 [2024-10-14 02:06:13,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 02:06:13,334 INFO L225 Difference]: With dead ends: 17 [2024-10-14 02:06:13,334 INFO L226 Difference]: Without dead ends: 10 [2024-10-14 02:06:13,334 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 [2024-10-14 02:06:13,336 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 1 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-14 02:06:13,336 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 10 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-14 02:06:13,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2024-10-14 02:06:13,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2024-10-14 02:06:13,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 9 states have internal predecessors, (12), 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) [2024-10-14 02:06:13,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 12 transitions. [2024-10-14 02:06:13,340 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 12 transitions. Word has length 6 [2024-10-14 02:06:13,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 02:06:13,340 INFO L471 AbstractCegarLoop]: Abstraction has 10 states and 12 transitions. [2024-10-14 02:06:13,340 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 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) [2024-10-14 02:06:13,340 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 12 transitions. [2024-10-14 02:06:13,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-10-14 02:06:13,341 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 02:06:13,341 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 02:06:13,341 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-14 02:06:13,341 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 02:06:13,342 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 02:06:13,342 INFO L85 PathProgramCache]: Analyzing trace with hash 82784800, now seen corresponding path program 1 times [2024-10-14 02:06:13,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 02:06:13,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221804610] [2024-10-14 02:06:13,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 02:06:13,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 02:06:13,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:06:13,398 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-14 02:06:13,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 02:06:13,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [221804610] [2024-10-14 02:06:13,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [221804610] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 02:06:13,399 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 02:06:13,400 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 02:06:13,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149378972] [2024-10-14 02:06:13,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 02:06:13,400 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 02:06:13,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 02:06:13,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 02:06:13,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 02:06:13,402 INFO L87 Difference]: Start difference. First operand 10 states and 12 transitions. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 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) [2024-10-14 02:06:13,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 02:06:13,422 INFO L93 Difference]: Finished difference Result 15 states and 17 transitions. [2024-10-14 02:06:13,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 02:06:13,426 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 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 8 [2024-10-14 02:06:13,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 02:06:13,426 INFO L225 Difference]: With dead ends: 15 [2024-10-14 02:06:13,426 INFO L226 Difference]: Without dead ends: 11 [2024-10-14 02:06:13,426 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 02:06:13,428 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 0 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-14 02:06:13,428 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 10 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-14 02:06:13,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2024-10-14 02:06:13,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2024-10-14 02:06:13,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.3) internal successors, (13), 10 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) [2024-10-14 02:06:13,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 13 transitions. [2024-10-14 02:06:13,434 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 13 transitions. Word has length 8 [2024-10-14 02:06:13,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 02:06:13,435 INFO L471 AbstractCegarLoop]: Abstraction has 11 states and 13 transitions. [2024-10-14 02:06:13,435 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 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) [2024-10-14 02:06:13,435 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 13 transitions. [2024-10-14 02:06:13,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-10-14 02:06:13,435 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 02:06:13,435 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 02:06:13,435 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-14 02:06:13,436 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 02:06:13,439 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 02:06:13,439 INFO L85 PathProgramCache]: Analyzing trace with hash -1726973108, now seen corresponding path program 1 times [2024-10-14 02:06:13,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 02:06:13,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556835451] [2024-10-14 02:06:13,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 02:06:13,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 02:06:13,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:06:13,532 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-14 02:06:13,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 02:06:13,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1556835451] [2024-10-14 02:06:13,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1556835451] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 02:06:13,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [396646979] [2024-10-14 02:06:13,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 02:06:13,534 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 02:06:13,534 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 02:06:13,536 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) [2024-10-14 02:06:13,537 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-14 02:06:13,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:06:13,591 INFO L255 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-14 02:06:13,595 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 02:06:13,651 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-14 02:06:13,651 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 02:06:13,687 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-14 02:06:13,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [396646979] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 02:06:13,688 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 02:06:13,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7 [2024-10-14 02:06:13,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718983231] [2024-10-14 02:06:13,688 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 02:06:13,689 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-14 02:06:13,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 02:06:13,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-14 02:06:13,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-10-14 02:06:13,690 INFO L87 Difference]: Start difference. First operand 11 states and 13 transitions. Second operand has 8 states, 8 states have (on average 2.375) internal successors, (19), 7 states have internal predecessors, (19), 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) [2024-10-14 02:06:13,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 02:06:13,786 INFO L93 Difference]: Finished difference Result 25 states and 35 transitions. [2024-10-14 02:06:13,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-14 02:06:13,786 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.375) internal successors, (19), 7 states have internal predecessors, (19), 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 9 [2024-10-14 02:06:13,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 02:06:13,787 INFO L225 Difference]: With dead ends: 25 [2024-10-14 02:06:13,787 INFO L226 Difference]: Without dead ends: 17 [2024-10-14 02:06:13,788 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=80, Unknown=0, NotChecked=0, Total=132 [2024-10-14 02:06:13,792 INFO L432 NwaCegarLoop]: 5 mSDtfsCounter, 2 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-14 02:06:13,793 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 17 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-14 02:06:13,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2024-10-14 02:06:13,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2024-10-14 02:06:13,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.25) internal successors, (20), 16 states have internal predecessors, (20), 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) [2024-10-14 02:06:13,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 20 transitions. [2024-10-14 02:06:13,797 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 20 transitions. Word has length 9 [2024-10-14 02:06:13,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 02:06:13,798 INFO L471 AbstractCegarLoop]: Abstraction has 17 states and 20 transitions. [2024-10-14 02:06:13,798 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.375) internal successors, (19), 7 states have internal predecessors, (19), 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) [2024-10-14 02:06:13,798 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 20 transitions. [2024-10-14 02:06:13,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-10-14 02:06:13,799 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 02:06:13,799 INFO L215 NwaCegarLoop]: trace histogram [4, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-10-14 02:06:13,815 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-14 02:06:14,003 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 [2024-10-14 02:06:14,004 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 02:06:14,004 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 02:06:14,005 INFO L85 PathProgramCache]: Analyzing trace with hash 826113619, now seen corresponding path program 1 times [2024-10-14 02:06:14,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 02:06:14,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666699868] [2024-10-14 02:06:14,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 02:06:14,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 02:06:14,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:06:14,116 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-14 02:06:14,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 02:06:14,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666699868] [2024-10-14 02:06:14,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [666699868] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 02:06:14,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [9361267] [2024-10-14 02:06:14,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 02:06:14,117 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 02:06:14,118 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 02:06:14,122 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) [2024-10-14 02:06:14,123 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-14 02:06:14,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:06:14,177 INFO L255 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-14 02:06:14,179 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 02:06:14,209 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-14 02:06:14,213 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 02:06:14,266 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-14 02:06:14,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [9361267] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 02:06:14,268 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 02:06:14,268 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2024-10-14 02:06:14,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034414748] [2024-10-14 02:06:14,268 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 02:06:14,269 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-14 02:06:14,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 02:06:14,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-14 02:06:14,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-10-14 02:06:14,270 INFO L87 Difference]: Start difference. First operand 17 states and 20 transitions. Second operand has 9 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 8 states have internal predecessors, (25), 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) [2024-10-14 02:06:14,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 02:06:14,314 INFO L93 Difference]: Finished difference Result 37 states and 47 transitions. [2024-10-14 02:06:14,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-14 02:06:14,314 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 8 states have internal predecessors, (25), 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 16 [2024-10-14 02:06:14,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 02:06:14,315 INFO L225 Difference]: With dead ends: 37 [2024-10-14 02:06:14,315 INFO L226 Difference]: Without dead ends: 25 [2024-10-14 02:06:14,315 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-10-14 02:06:14,316 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 0 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-14 02:06:14,317 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 16 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-14 02:06:14,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2024-10-14 02:06:14,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2024-10-14 02:06:14,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 24 states have (on average 1.1666666666666667) internal successors, (28), 24 states have internal predecessors, (28), 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) [2024-10-14 02:06:14,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 28 transitions. [2024-10-14 02:06:14,325 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 28 transitions. Word has length 16 [2024-10-14 02:06:14,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 02:06:14,325 INFO L471 AbstractCegarLoop]: Abstraction has 25 states and 28 transitions. [2024-10-14 02:06:14,325 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 8 states have internal predecessors, (25), 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) [2024-10-14 02:06:14,325 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions. [2024-10-14 02:06:14,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-10-14 02:06:14,326 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 02:06:14,326 INFO L215 NwaCegarLoop]: trace histogram [8, 6, 2, 2, 1, 1, 1, 1, 1, 1] [2024-10-14 02:06:14,339 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-14 02:06:14,528 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 [2024-10-14 02:06:14,529 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 02:06:14,529 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 02:06:14,529 INFO L85 PathProgramCache]: Analyzing trace with hash 1672919495, now seen corresponding path program 2 times [2024-10-14 02:06:14,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 02:06:14,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864166787] [2024-10-14 02:06:14,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 02:06:14,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 02:06:14,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:06:14,774 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 21 proven. 42 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-14 02:06:14,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 02:06:14,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864166787] [2024-10-14 02:06:14,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [864166787] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 02:06:14,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1544785885] [2024-10-14 02:06:14,775 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-14 02:06:14,775 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 02:06:14,775 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 02:06:14,777 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) [2024-10-14 02:06:14,778 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-14 02:06:14,830 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-14 02:06:14,830 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 02:06:14,831 INFO L255 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-10-14 02:06:14,834 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 02:06:14,892 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 21 proven. 42 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-14 02:06:14,892 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 02:06:15,034 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 21 proven. 42 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-14 02:06:15,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1544785885] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 02:06:15,034 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 02:06:15,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 16 [2024-10-14 02:06:15,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668818685] [2024-10-14 02:06:15,035 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 02:06:15,035 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-10-14 02:06:15,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 02:06:15,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-10-14 02:06:15,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2024-10-14 02:06:15,036 INFO L87 Difference]: Start difference. First operand 25 states and 28 transitions. Second operand has 17 states, 17 states have (on average 2.411764705882353) internal successors, (41), 16 states have internal predecessors, (41), 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) [2024-10-14 02:06:15,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 02:06:15,111 INFO L93 Difference]: Finished difference Result 53 states and 67 transitions. [2024-10-14 02:06:15,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-10-14 02:06:15,112 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.411764705882353) internal successors, (41), 16 states have internal predecessors, (41), 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 24 [2024-10-14 02:06:15,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 02:06:15,112 INFO L225 Difference]: With dead ends: 53 [2024-10-14 02:06:15,113 INFO L226 Difference]: Without dead ends: 41 [2024-10-14 02:06:15,113 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2024-10-14 02:06:15,114 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 0 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-14 02:06:15,114 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 28 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-14 02:06:15,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2024-10-14 02:06:15,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2024-10-14 02:06:15,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 40 states have (on average 1.1) internal successors, (44), 40 states have internal predecessors, (44), 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) [2024-10-14 02:06:15,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 44 transitions. [2024-10-14 02:06:15,123 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 44 transitions. Word has length 24 [2024-10-14 02:06:15,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 02:06:15,123 INFO L471 AbstractCegarLoop]: Abstraction has 41 states and 44 transitions. [2024-10-14 02:06:15,124 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.411764705882353) internal successors, (41), 16 states have internal predecessors, (41), 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) [2024-10-14 02:06:15,124 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 44 transitions. [2024-10-14 02:06:15,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-10-14 02:06:15,125 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 02:06:15,125 INFO L215 NwaCegarLoop]: trace histogram [16, 14, 2, 2, 1, 1, 1, 1, 1, 1] [2024-10-14 02:06:15,137 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-14 02:06:15,325 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 [2024-10-14 02:06:15,326 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 02:06:15,326 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 02:06:15,326 INFO L85 PathProgramCache]: Analyzing trace with hash -714926929, now seen corresponding path program 3 times [2024-10-14 02:06:15,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 02:06:15,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17691561] [2024-10-14 02:06:15,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 02:06:15,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 02:06:15,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:06:15,766 INFO L134 CoverageAnalysis]: Checked inductivity of 259 backedges. 45 proven. 210 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-14 02:06:15,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 02:06:15,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17691561] [2024-10-14 02:06:15,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [17691561] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 02:06:15,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [921013646] [2024-10-14 02:06:15,767 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-14 02:06:15,767 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 02:06:15,768 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 02:06:15,769 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) [2024-10-14 02:06:15,770 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-14 02:06:15,814 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-10-14 02:06:15,815 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 02:06:15,816 INFO L255 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-14 02:06:15,817 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 02:06:15,912 INFO L134 CoverageAnalysis]: Checked inductivity of 259 backedges. 46 proven. 3 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2024-10-14 02:06:15,912 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 02:06:16,034 INFO L134 CoverageAnalysis]: Checked inductivity of 259 backedges. 46 proven. 3 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2024-10-14 02:06:16,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [921013646] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 02:06:16,035 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 02:06:16,035 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 5, 5] total 24 [2024-10-14 02:06:16,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858374935] [2024-10-14 02:06:16,036 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 02:06:16,036 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-10-14 02:06:16,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 02:06:16,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-10-14 02:06:16,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=180, Invalid=420, Unknown=0, NotChecked=0, Total=600 [2024-10-14 02:06:16,038 INFO L87 Difference]: Start difference. First operand 41 states and 44 transitions. Second operand has 25 states, 25 states have (on average 2.36) internal successors, (59), 24 states have internal predecessors, (59), 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) [2024-10-14 02:06:16,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 02:06:16,318 INFO L93 Difference]: Finished difference Result 65 states and 79 transitions. [2024-10-14 02:06:16,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-10-14 02:06:16,319 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.36) internal successors, (59), 24 states have internal predecessors, (59), 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 40 [2024-10-14 02:06:16,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 02:06:16,320 INFO L225 Difference]: With dead ends: 65 [2024-10-14 02:06:16,320 INFO L226 Difference]: Without dead ends: 53 [2024-10-14 02:06:16,321 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 252 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=525, Invalid=1035, Unknown=0, NotChecked=0, Total=1560 [2024-10-14 02:06:16,321 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 3 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-14 02:06:16,321 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 26 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-14 02:06:16,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2024-10-14 02:06:16,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 47. [2024-10-14 02:06:16,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 46 states have (on average 1.0869565217391304) internal successors, (50), 46 states have internal predecessors, (50), 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) [2024-10-14 02:06:16,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 50 transitions. [2024-10-14 02:06:16,334 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 50 transitions. Word has length 40 [2024-10-14 02:06:16,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 02:06:16,334 INFO L471 AbstractCegarLoop]: Abstraction has 47 states and 50 transitions. [2024-10-14 02:06:16,334 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.36) internal successors, (59), 24 states have internal predecessors, (59), 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) [2024-10-14 02:06:16,334 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 50 transitions. [2024-10-14 02:06:16,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-10-14 02:06:16,336 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 02:06:16,336 INFO L215 NwaCegarLoop]: trace histogram [17, 15, 6, 2, 1, 1, 1, 1, 1, 1] [2024-10-14 02:06:16,352 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-10-14 02:06:16,536 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 [2024-10-14 02:06:16,537 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 02:06:16,537 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 02:06:16,537 INFO L85 PathProgramCache]: Analyzing trace with hash -346338708, now seen corresponding path program 4 times [2024-10-14 02:06:16,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 02:06:16,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299524904] [2024-10-14 02:06:16,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 02:06:16,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 02:06:16,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:06:16,977 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 48 proven. 240 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-10-14 02:06:16,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 02:06:16,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299524904] [2024-10-14 02:06:16,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1299524904] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 02:06:16,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1665827278] [2024-10-14 02:06:16,978 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-14 02:06:16,978 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 02:06:16,978 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 02:06:16,980 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) [2024-10-14 02:06:16,985 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-14 02:06:17,059 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-14 02:06:17,059 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 02:06:17,061 INFO L255 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-10-14 02:06:17,070 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 02:06:17,153 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 48 proven. 240 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-10-14 02:06:17,153 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 02:06:17,620 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 48 proven. 240 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-10-14 02:06:17,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1665827278] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 02:06:17,621 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 02:06:17,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 34 [2024-10-14 02:06:17,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310475463] [2024-10-14 02:06:17,621 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 02:06:17,622 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-10-14 02:06:17,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 02:06:17,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-10-14 02:06:17,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=595, Invalid=595, Unknown=0, NotChecked=0, Total=1190 [2024-10-14 02:06:17,625 INFO L87 Difference]: Start difference. First operand 47 states and 50 transitions. Second operand has 35 states, 35 states have (on average 2.2) internal successors, (77), 34 states have internal predecessors, (77), 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) [2024-10-14 02:06:17,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 02:06:17,745 INFO L93 Difference]: Finished difference Result 97 states and 120 transitions. [2024-10-14 02:06:17,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-10-14 02:06:17,745 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 2.2) internal successors, (77), 34 states have internal predecessors, (77), 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 46 [2024-10-14 02:06:17,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 02:06:17,746 INFO L225 Difference]: With dead ends: 97 [2024-10-14 02:06:17,748 INFO L226 Difference]: Without dead ends: 81 [2024-10-14 02:06:17,749 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=595, Invalid=595, Unknown=0, NotChecked=0, Total=1190 [2024-10-14 02:06:17,749 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 0 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-14 02:06:17,750 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 19 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-14 02:06:17,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2024-10-14 02:06:17,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2024-10-14 02:06:17,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 80 states have (on average 1.05) internal successors, (84), 80 states have internal predecessors, (84), 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) [2024-10-14 02:06:17,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 84 transitions. [2024-10-14 02:06:17,765 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 84 transitions. Word has length 46 [2024-10-14 02:06:17,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 02:06:17,766 INFO L471 AbstractCegarLoop]: Abstraction has 81 states and 84 transitions. [2024-10-14 02:06:17,766 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 2.2) internal successors, (77), 34 states have internal predecessors, (77), 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) [2024-10-14 02:06:17,766 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 84 transitions. [2024-10-14 02:06:17,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-10-14 02:06:17,770 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 02:06:17,771 INFO L215 NwaCegarLoop]: trace histogram [34, 32, 6, 2, 1, 1, 1, 1, 1, 1] [2024-10-14 02:06:17,788 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-14 02:06:17,971 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 [2024-10-14 02:06:17,972 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 02:06:17,972 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 02:06:17,972 INFO L85 PathProgramCache]: Analyzing trace with hash 1072320313, now seen corresponding path program 5 times [2024-10-14 02:06:17,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 02:06:17,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637551633] [2024-10-14 02:06:17,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 02:06:17,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 02:06:18,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:06:19,407 INFO L134 CoverageAnalysis]: Checked inductivity of 1177 backedges. 99 proven. 1056 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-10-14 02:06:19,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 02:06:19,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637551633] [2024-10-14 02:06:19,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1637551633] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 02:06:19,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [850900245] [2024-10-14 02:06:19,408 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-14 02:06:19,409 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 02:06:19,409 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 02:06:19,410 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) [2024-10-14 02:06:19,411 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-14 02:06:19,501 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 35 check-sat command(s) [2024-10-14 02:06:19,501 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 02:06:19,503 INFO L255 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 66 conjuncts are in the unsatisfiable core [2024-10-14 02:06:19,510 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 02:06:19,658 INFO L134 CoverageAnalysis]: Checked inductivity of 1177 backedges. 99 proven. 1056 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-10-14 02:06:19,658 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 02:06:21,102 INFO L134 CoverageAnalysis]: Checked inductivity of 1177 backedges. 99 proven. 1056 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-10-14 02:06:21,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [850900245] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 02:06:21,103 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 02:06:21,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34, 34] total 68 [2024-10-14 02:06:21,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145498865] [2024-10-14 02:06:21,103 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 02:06:21,104 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 69 states [2024-10-14 02:06:21,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 02:06:21,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2024-10-14 02:06:21,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2346, Invalid=2346, Unknown=0, NotChecked=0, Total=4692 [2024-10-14 02:06:21,108 INFO L87 Difference]: Start difference. First operand 81 states and 84 transitions. Second operand has 69 states, 69 states have (on average 2.101449275362319) internal successors, (145), 68 states have internal predecessors, (145), 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) [2024-10-14 02:06:21,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 02:06:21,306 INFO L93 Difference]: Finished difference Result 165 states and 205 transitions. [2024-10-14 02:06:21,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2024-10-14 02:06:21,307 INFO L78 Accepts]: Start accepts. Automaton has has 69 states, 69 states have (on average 2.101449275362319) internal successors, (145), 68 states have internal predecessors, (145), 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 80 [2024-10-14 02:06:21,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 02:06:21,311 INFO L225 Difference]: With dead ends: 165 [2024-10-14 02:06:21,311 INFO L226 Difference]: Without dead ends: 149 [2024-10-14 02:06:21,313 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=2346, Invalid=2346, Unknown=0, NotChecked=0, Total=4692 [2024-10-14 02:06:21,314 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 0 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-14 02:06:21,315 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 16 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-14 02:06:21,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2024-10-14 02:06:21,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 149. [2024-10-14 02:06:21,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 148 states have (on average 1.027027027027027) internal successors, (152), 148 states have internal predecessors, (152), 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) [2024-10-14 02:06:21,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 152 transitions. [2024-10-14 02:06:21,329 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 152 transitions. Word has length 80 [2024-10-14 02:06:21,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 02:06:21,330 INFO L471 AbstractCegarLoop]: Abstraction has 149 states and 152 transitions. [2024-10-14 02:06:21,330 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 69 states, 69 states have (on average 2.101449275362319) internal successors, (145), 68 states have internal predecessors, (145), 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) [2024-10-14 02:06:21,330 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 152 transitions. [2024-10-14 02:06:21,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2024-10-14 02:06:21,336 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 02:06:21,336 INFO L215 NwaCegarLoop]: trace histogram [68, 66, 6, 2, 1, 1, 1, 1, 1, 1] [2024-10-14 02:06:21,353 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-10-14 02:06:21,536 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 [2024-10-14 02:06:21,537 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 02:06:21,537 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 02:06:21,538 INFO L85 PathProgramCache]: Analyzing trace with hash 1894174483, now seen corresponding path program 6 times [2024-10-14 02:06:21,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 02:06:21,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318513692] [2024-10-14 02:06:21,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 02:06:21,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 02:06:21,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:06:25,197 INFO L134 CoverageAnalysis]: Checked inductivity of 4645 backedges. 201 proven. 4422 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-10-14 02:06:25,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 02:06:25,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [318513692] [2024-10-14 02:06:25,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [318513692] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 02:06:25,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [311538130] [2024-10-14 02:06:25,197 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-10-14 02:06:25,197 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 02:06:25,198 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 02:06:25,199 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) [2024-10-14 02:06:25,201 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-14 02:06:25,272 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2024-10-14 02:06:25,273 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 02:06:25,273 INFO L255 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-14 02:06:25,276 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 02:06:25,661 INFO L134 CoverageAnalysis]: Checked inductivity of 4645 backedges. 202 proven. 21 refuted. 0 times theorem prover too weak. 4422 trivial. 0 not checked. [2024-10-14 02:06:25,661 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 02:06:26,044 INFO L134 CoverageAnalysis]: Checked inductivity of 4645 backedges. 202 proven. 21 refuted. 0 times theorem prover too weak. 4422 trivial. 0 not checked. [2024-10-14 02:06:26,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [311538130] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 02:06:26,044 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 02:06:26,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [68, 9, 9] total 84 [2024-10-14 02:06:26,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121167647] [2024-10-14 02:06:26,045 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 02:06:26,045 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 85 states [2024-10-14 02:06:26,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 02:06:26,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2024-10-14 02:06:26,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2498, Invalid=4642, Unknown=0, NotChecked=0, Total=7140 [2024-10-14 02:06:26,049 INFO L87 Difference]: Start difference. First operand 149 states and 152 transitions. Second operand has 85 states, 85 states have (on average 2.011764705882353) internal successors, (171), 84 states have internal predecessors, (171), 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) [2024-10-14 02:06:28,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 02:06:28,060 INFO L93 Difference]: Finished difference Result 181 states and 199 transitions. [2024-10-14 02:06:28,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2024-10-14 02:06:28,061 INFO L78 Accepts]: Start accepts. Automaton has has 85 states, 85 states have (on average 2.011764705882353) internal successors, (171), 84 states have internal predecessors, (171), 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 148 [2024-10-14 02:06:28,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 02:06:28,062 INFO L225 Difference]: With dead ends: 181 [2024-10-14 02:06:28,062 INFO L226 Difference]: Without dead ends: 165 [2024-10-14 02:06:28,066 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 429 GetRequests, 279 SyntacticMatches, 0 SemanticMatches, 150 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3386 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=8059, Invalid=14893, Unknown=0, NotChecked=0, Total=22952 [2024-10-14 02:06:28,066 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 3 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-14 02:06:28,067 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 32 Invalid, 195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 194 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-14 02:06:28,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2024-10-14 02:06:28,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 159. [2024-10-14 02:06:28,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 158 states have (on average 1.0253164556962024) internal successors, (162), 158 states have internal predecessors, (162), 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) [2024-10-14 02:06:28,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 162 transitions. [2024-10-14 02:06:28,083 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 162 transitions. Word has length 148 [2024-10-14 02:06:28,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 02:06:28,083 INFO L471 AbstractCegarLoop]: Abstraction has 159 states and 162 transitions. [2024-10-14 02:06:28,083 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 85 states, 85 states have (on average 2.011764705882353) internal successors, (171), 84 states have internal predecessors, (171), 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) [2024-10-14 02:06:28,083 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 162 transitions. [2024-10-14 02:06:28,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2024-10-14 02:06:28,085 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 02:06:28,085 INFO L215 NwaCegarLoop]: trace histogram [69, 67, 14, 2, 1, 1, 1, 1, 1, 1] [2024-10-14 02:06:28,101 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-10-14 02:06:28,286 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 [2024-10-14 02:06:28,286 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 02:06:28,287 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 02:06:28,287 INFO L85 PathProgramCache]: Analyzing trace with hash -480709040, now seen corresponding path program 7 times [2024-10-14 02:06:28,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 02:06:28,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525285831] [2024-10-14 02:06:28,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 02:06:28,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 02:06:28,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:06:31,359 INFO L134 CoverageAnalysis]: Checked inductivity of 4866 backedges. 204 proven. 4556 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2024-10-14 02:06:31,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 02:06:31,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525285831] [2024-10-14 02:06:31,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [525285831] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 02:06:31,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1229900010] [2024-10-14 02:06:31,359 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-10-14 02:06:31,360 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 02:06:31,360 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 02:06:31,361 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 02:06:31,361 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-14 02:06:31,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:06:31,488 INFO L255 TraceCheckSpWp]: Trace formula consists of 548 conjuncts, 136 conjuncts are in the unsatisfiable core [2024-10-14 02:06:31,499 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 02:06:31,720 INFO L134 CoverageAnalysis]: Checked inductivity of 4866 backedges. 204 proven. 4556 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2024-10-14 02:06:31,720 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 02:06:36,367 INFO L134 CoverageAnalysis]: Checked inductivity of 4866 backedges. 204 proven. 4556 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2024-10-14 02:06:36,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1229900010] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 02:06:36,367 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 02:06:36,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [69, 69, 69] total 138 [2024-10-14 02:06:36,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349196605] [2024-10-14 02:06:36,367 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 02:06:36,368 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 139 states [2024-10-14 02:06:36,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 02:06:36,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 139 interpolants. [2024-10-14 02:06:36,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9591, Invalid=9591, Unknown=0, NotChecked=0, Total=19182 [2024-10-14 02:06:36,376 INFO L87 Difference]: Start difference. First operand 159 states and 162 transitions. Second operand has 139 states, 139 states have (on average 2.050359712230216) internal successors, (285), 138 states have internal predecessors, (285), 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) [2024-10-14 02:06:36,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 02:06:36,753 INFO L93 Difference]: Finished difference Result 321 states and 396 transitions. [2024-10-14 02:06:36,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 138 states. [2024-10-14 02:06:36,754 INFO L78 Accepts]: Start accepts. Automaton has has 139 states, 139 states have (on average 2.050359712230216) internal successors, (285), 138 states have internal predecessors, (285), 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 158 [2024-10-14 02:06:36,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 02:06:36,755 INFO L225 Difference]: With dead ends: 321 [2024-10-14 02:06:36,755 INFO L226 Difference]: Without dead ends: 297 [2024-10-14 02:06:36,756 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 383 GetRequests, 246 SyntacticMatches, 0 SemanticMatches, 137 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 268 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=9591, Invalid=9591, Unknown=0, NotChecked=0, Total=19182 [2024-10-14 02:06:36,757 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 0 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 299 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 300 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 299 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-14 02:06:36,757 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 25 Invalid, 300 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 299 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-14 02:06:36,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2024-10-14 02:06:36,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 297. [2024-10-14 02:06:36,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 297 states, 296 states have (on average 1.0135135135135136) internal successors, (300), 296 states have internal predecessors, (300), 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) [2024-10-14 02:06:36,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 300 transitions. [2024-10-14 02:06:36,779 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 300 transitions. Word has length 158 [2024-10-14 02:06:36,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 02:06:36,779 INFO L471 AbstractCegarLoop]: Abstraction has 297 states and 300 transitions. [2024-10-14 02:06:36,780 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 139 states, 139 states have (on average 2.050359712230216) internal successors, (285), 138 states have internal predecessors, (285), 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) [2024-10-14 02:06:36,780 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 300 transitions. [2024-10-14 02:06:36,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 297 [2024-10-14 02:06:36,783 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 02:06:36,784 INFO L215 NwaCegarLoop]: trace histogram [138, 136, 14, 2, 1, 1, 1, 1, 1, 1] [2024-10-14 02:06:36,797 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-10-14 02:06:36,984 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-10-14 02:06:36,985 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 02:06:36,985 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 02:06:36,985 INFO L85 PathProgramCache]: Analyzing trace with hash 13597185, now seen corresponding path program 8 times [2024-10-14 02:06:36,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 02:06:36,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16702456] [2024-10-14 02:06:36,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 02:06:36,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 02:06:37,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:06:49,641 INFO L134 CoverageAnalysis]: Checked inductivity of 19149 backedges. 411 proven. 18632 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2024-10-14 02:06:49,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 02:06:49,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16702456] [2024-10-14 02:06:49,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [16702456] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 02:06:49,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1708688294] [2024-10-14 02:06:49,642 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-14 02:06:49,642 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 02:06:49,642 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 02:06:49,644 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 02:06:49,646 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-14 02:06:49,851 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-14 02:06:49,851 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 02:06:49,860 INFO L255 TraceCheckSpWp]: Trace formula consists of 962 conjuncts, 274 conjuncts are in the unsatisfiable core [2024-10-14 02:06:49,879 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 02:06:50,249 INFO L134 CoverageAnalysis]: Checked inductivity of 19149 backedges. 411 proven. 18632 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2024-10-14 02:06:50,249 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 02:07:08,290 INFO L134 CoverageAnalysis]: Checked inductivity of 19149 backedges. 411 proven. 18632 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2024-10-14 02:07:08,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1708688294] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 02:07:08,291 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 02:07:08,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [138, 138, 138] total 276 [2024-10-14 02:07:08,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443315499] [2024-10-14 02:07:08,291 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 02:07:08,292 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 277 states [2024-10-14 02:07:08,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 02:07:08,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 277 interpolants. [2024-10-14 02:07:08,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38226, Invalid=38226, Unknown=0, NotChecked=0, Total=76452 [2024-10-14 02:07:08,308 INFO L87 Difference]: Start difference. First operand 297 states and 300 transitions. Second operand has 277 states, 277 states have (on average 2.0252707581227436) internal successors, (561), 276 states have internal predecessors, (561), 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) [2024-10-14 02:07:09,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 02:07:09,459 INFO L93 Difference]: Finished difference Result 597 states and 741 transitions. [2024-10-14 02:07:09,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 276 states. [2024-10-14 02:07:09,460 INFO L78 Accepts]: Start accepts. Automaton has has 277 states, 277 states have (on average 2.0252707581227436) internal successors, (561), 276 states have internal predecessors, (561), 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 296 [2024-10-14 02:07:09,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 02:07:09,462 INFO L225 Difference]: With dead ends: 597 [2024-10-14 02:07:09,463 INFO L226 Difference]: Without dead ends: 573 [2024-10-14 02:07:09,466 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 728 GetRequests, 453 SyntacticMatches, 0 SemanticMatches, 275 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 544 ImplicationChecksByTransitivity, 23.8s TimeCoverageRelationStatistics Valid=38226, Invalid=38226, Unknown=0, NotChecked=0, Total=76452 [2024-10-14 02:07:09,467 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 0 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 559 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 560 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 559 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-14 02:07:09,467 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 13 Invalid, 560 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 559 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-14 02:07:09,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 573 states. [2024-10-14 02:07:09,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 573 to 573. [2024-10-14 02:07:09,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 573 states, 572 states have (on average 1.006993006993007) internal successors, (576), 572 states have internal predecessors, (576), 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) [2024-10-14 02:07:09,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 573 states to 573 states and 576 transitions. [2024-10-14 02:07:09,498 INFO L78 Accepts]: Start accepts. Automaton has 573 states and 576 transitions. Word has length 296 [2024-10-14 02:07:09,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 02:07:09,499 INFO L471 AbstractCegarLoop]: Abstraction has 573 states and 576 transitions. [2024-10-14 02:07:09,500 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 277 states, 277 states have (on average 2.0252707581227436) internal successors, (561), 276 states have internal predecessors, (561), 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) [2024-10-14 02:07:09,500 INFO L276 IsEmpty]: Start isEmpty. Operand 573 states and 576 transitions. [2024-10-14 02:07:09,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 573 [2024-10-14 02:07:09,508 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 02:07:09,508 INFO L215 NwaCegarLoop]: trace histogram [276, 274, 14, 2, 1, 1, 1, 1, 1, 1] [2024-10-14 02:07:09,525 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-10-14 02:07:09,708 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 02:07:09,709 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 02:07:09,709 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 02:07:09,709 INFO L85 PathProgramCache]: Analyzing trace with hash 735471011, now seen corresponding path program 9 times [2024-10-14 02:07:09,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 02:07:09,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752708331] [2024-10-14 02:07:09,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 02:07:09,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 02:07:10,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat