./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem11_label48.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3061b6dc Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/eca-rers2012/Problem11_label48.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 7a889f150dc2c455e03355eaf9dfccf3bdcd55e31f50409b2096126a8e217346 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-18 10:23:13,952 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-18 10:23:14,014 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-18 10:23:14,018 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-18 10:23:14,019 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-18 10:23:14,037 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-18 10:23:14,038 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-18 10:23:14,038 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-18 10:23:14,039 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-18 10:23:14,039 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-18 10:23:14,039 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-18 10:23:14,040 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-18 10:23:14,040 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-18 10:23:14,041 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-18 10:23:14,041 INFO L153 SettingsManager]: * Use SBE=true [2024-11-18 10:23:14,041 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-18 10:23:14,042 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-18 10:23:14,042 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-18 10:23:14,042 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-18 10:23:14,043 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-18 10:23:14,043 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-18 10:23:14,044 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-18 10:23:14,044 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-18 10:23:14,044 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-18 10:23:14,045 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-18 10:23:14,045 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-18 10:23:14,045 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-18 10:23:14,046 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-18 10:23:14,046 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-18 10:23:14,046 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-18 10:23:14,047 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-18 10:23:14,047 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-18 10:23:14,047 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 10:23:14,048 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-18 10:23:14,048 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-18 10:23:14,048 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-18 10:23:14,048 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-18 10:23:14,049 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-18 10:23:14,049 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-18 10:23:14,049 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-18 10:23:14,050 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-18 10:23:14,050 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-18 10:23:14,050 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7a889f150dc2c455e03355eaf9dfccf3bdcd55e31f50409b2096126a8e217346 [2024-11-18 10:23:14,283 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-18 10:23:14,313 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-18 10:23:14,316 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-18 10:23:14,317 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-18 10:23:14,318 INFO L274 PluginConnector]: CDTParser initialized [2024-11-18 10:23:14,319 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem11_label48.c [2024-11-18 10:23:15,778 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-18 10:23:16,056 INFO L384 CDTParser]: Found 1 translation units. [2024-11-18 10:23:16,056 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem11_label48.c [2024-11-18 10:23:16,072 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/50642566f/5c99289a7da0486f8f65cbd7f26adffc/FLAG346ae66d2 [2024-11-18 10:23:16,356 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/50642566f/5c99289a7da0486f8f65cbd7f26adffc [2024-11-18 10:23:16,360 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-18 10:23:16,361 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-18 10:23:16,363 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-18 10:23:16,364 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-18 10:23:16,369 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-18 10:23:16,370 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 10:23:16" (1/1) ... [2024-11-18 10:23:16,371 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e08c520 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:23:16, skipping insertion in model container [2024-11-18 10:23:16,371 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 10:23:16" (1/1) ... [2024-11-18 10:23:16,432 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-18 10:23:16,672 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem11_label48.c[7294,7307] [2024-11-18 10:23:16,900 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 10:23:16,911 INFO L200 MainTranslator]: Completed pre-run [2024-11-18 10:23:16,978 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem11_label48.c[7294,7307] [2024-11-18 10:23:17,110 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 10:23:17,130 INFO L204 MainTranslator]: Completed translation [2024-11-18 10:23:17,131 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:23:17 WrapperNode [2024-11-18 10:23:17,131 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-18 10:23:17,132 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-18 10:23:17,133 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-18 10:23:17,133 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-18 10:23:17,140 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:23:17" (1/1) ... [2024-11-18 10:23:17,169 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:23:17" (1/1) ... [2024-11-18 10:23:17,275 INFO L138 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1000 [2024-11-18 10:23:17,275 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-18 10:23:17,276 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-18 10:23:17,276 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-18 10:23:17,276 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-18 10:23:17,288 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:23:17" (1/1) ... [2024-11-18 10:23:17,288 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:23:17" (1/1) ... [2024-11-18 10:23:17,297 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:23:17" (1/1) ... [2024-11-18 10:23:17,360 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-18 10:23:17,360 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:23:17" (1/1) ... [2024-11-18 10:23:17,360 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:23:17" (1/1) ... [2024-11-18 10:23:17,398 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:23:17" (1/1) ... [2024-11-18 10:23:17,411 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:23:17" (1/1) ... [2024-11-18 10:23:17,437 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:23:17" (1/1) ... [2024-11-18 10:23:17,445 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:23:17" (1/1) ... [2024-11-18 10:23:17,468 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-18 10:23:17,471 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-18 10:23:17,471 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-18 10:23:17,472 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-18 10:23:17,473 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:23:17" (1/1) ... [2024-11-18 10:23:17,478 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 10:23:17,490 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 10:23:17,507 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-18 10:23:17,514 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-18 10:23:17,562 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-18 10:23:17,562 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-18 10:23:17,563 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-18 10:23:17,563 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-18 10:23:17,639 INFO L238 CfgBuilder]: Building ICFG [2024-11-18 10:23:17,642 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-18 10:23:19,168 INFO L? ?]: Removed 129 outVars from TransFormulas that were not future-live. [2024-11-18 10:23:19,169 INFO L287 CfgBuilder]: Performing block encoding [2024-11-18 10:23:19,194 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-18 10:23:19,196 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-18 10:23:19,196 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 10:23:19 BoogieIcfgContainer [2024-11-18 10:23:19,197 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-18 10:23:19,199 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-18 10:23:19,200 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-18 10:23:19,203 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-18 10:23:19,203 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 10:23:16" (1/3) ... [2024-11-18 10:23:19,204 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ea7473c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 10:23:19, skipping insertion in model container [2024-11-18 10:23:19,204 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:23:17" (2/3) ... [2024-11-18 10:23:19,205 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ea7473c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 10:23:19, skipping insertion in model container [2024-11-18 10:23:19,205 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 10:23:19" (3/3) ... [2024-11-18 10:23:19,206 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem11_label48.c [2024-11-18 10:23:19,223 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-18 10:23:19,223 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-18 10:23:19,297 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-18 10:23:19,304 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;@25d86125, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-18 10:23:19,304 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-18 10:23:19,311 INFO L276 IsEmpty]: Start isEmpty. Operand has 283 states, 281 states have (on average 1.7153024911032029) internal successors, (482), 282 states have internal predecessors, (482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:23:19,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-11-18 10:23:19,320 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:23:19,322 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 10:23:19,323 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:23:19,327 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:23:19,329 INFO L85 PathProgramCache]: Analyzing trace with hash 761214138, now seen corresponding path program 1 times [2024-11-18 10:23:19,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:23:19,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138985931] [2024-11-18 10:23:19,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:23:19,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:23:19,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:23:19,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 10:23:19,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:23:19,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138985931] [2024-11-18 10:23:19,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2138985931] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:23:19,743 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:23:19,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-18 10:23:19,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777645151] [2024-11-18 10:23:19,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:23:19,750 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 10:23:19,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:23:19,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 10:23:19,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:23:19,780 INFO L87 Difference]: Start difference. First operand has 283 states, 281 states have (on average 1.7153024911032029) internal successors, (482), 282 states have internal predecessors, (482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 2 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) [2024-11-18 10:23:20,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:23:20,865 INFO L93 Difference]: Finished difference Result 769 states and 1360 transitions. [2024-11-18 10:23:20,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 10:23:20,867 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 2 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) Word has length 50 [2024-11-18 10:23:20,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:23:20,881 INFO L225 Difference]: With dead ends: 769 [2024-11-18 10:23:20,882 INFO L226 Difference]: Without dead ends: 422 [2024-11-18 10:23:20,886 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 [2024-11-18 10:23:20,889 INFO L432 NwaCegarLoop]: 141 mSDtfsCounter, 190 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 583 mSolverCounterSat, 208 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 190 SdHoareTripleChecker+Valid, 163 SdHoareTripleChecker+Invalid, 791 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 208 IncrementalHoareTripleChecker+Valid, 583 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-18 10:23:20,890 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [190 Valid, 163 Invalid, 791 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [208 Valid, 583 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-18 10:23:20,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 422 states. [2024-11-18 10:23:20,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 422 to 412. [2024-11-18 10:23:20,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 412 states, 411 states have (on average 1.5231143552311435) internal successors, (626), 411 states have internal predecessors, (626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:23:20,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 412 states to 412 states and 626 transitions. [2024-11-18 10:23:20,951 INFO L78 Accepts]: Start accepts. Automaton has 412 states and 626 transitions. Word has length 50 [2024-11-18 10:23:20,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:23:20,952 INFO L471 AbstractCegarLoop]: Abstraction has 412 states and 626 transitions. [2024-11-18 10:23:20,952 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 2 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) [2024-11-18 10:23:20,952 INFO L276 IsEmpty]: Start isEmpty. Operand 412 states and 626 transitions. [2024-11-18 10:23:20,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2024-11-18 10:23:20,956 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:23:20,956 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 10:23:20,957 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-18 10:23:20,957 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:23:20,958 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:23:20,958 INFO L85 PathProgramCache]: Analyzing trace with hash 1807266807, now seen corresponding path program 1 times [2024-11-18 10:23:20,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:23:20,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497686591] [2024-11-18 10:23:20,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:23:20,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:23:21,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:23:21,166 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 10:23:21,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:23:21,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497686591] [2024-11-18 10:23:21,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1497686591] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:23:21,169 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:23:21,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-18 10:23:21,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777465169] [2024-11-18 10:23:21,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:23:21,172 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 10:23:21,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:23:21,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 10:23:21,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:23:21,174 INFO L87 Difference]: Start difference. First operand 412 states and 626 transitions. Second operand has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 2 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:23:21,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:23:21,906 INFO L93 Difference]: Finished difference Result 1194 states and 1821 transitions. [2024-11-18 10:23:21,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 10:23:21,907 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 2 states have internal predecessors, (116), 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 116 [2024-11-18 10:23:21,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:23:21,911 INFO L225 Difference]: With dead ends: 1194 [2024-11-18 10:23:21,911 INFO L226 Difference]: Without dead ends: 784 [2024-11-18 10:23:21,912 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 [2024-11-18 10:23:21,914 INFO L432 NwaCegarLoop]: 130 mSDtfsCounter, 175 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 448 mSolverCounterSat, 183 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 631 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 183 IncrementalHoareTripleChecker+Valid, 448 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-18 10:23:21,914 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [175 Valid, 154 Invalid, 631 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [183 Valid, 448 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-18 10:23:21,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 784 states. [2024-11-18 10:23:21,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 784 to 784. [2024-11-18 10:23:21,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 784 states, 783 states have (on average 1.3742017879948913) internal successors, (1076), 783 states have internal predecessors, (1076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:23:21,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 784 states to 784 states and 1076 transitions. [2024-11-18 10:23:21,947 INFO L78 Accepts]: Start accepts. Automaton has 784 states and 1076 transitions. Word has length 116 [2024-11-18 10:23:21,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:23:21,948 INFO L471 AbstractCegarLoop]: Abstraction has 784 states and 1076 transitions. [2024-11-18 10:23:21,948 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 2 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:23:21,948 INFO L276 IsEmpty]: Start isEmpty. Operand 784 states and 1076 transitions. [2024-11-18 10:23:21,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2024-11-18 10:23:21,951 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:23:21,952 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 10:23:21,952 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-18 10:23:21,952 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:23:21,953 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:23:21,953 INFO L85 PathProgramCache]: Analyzing trace with hash -66853459, now seen corresponding path program 1 times [2024-11-18 10:23:21,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:23:21,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174659034] [2024-11-18 10:23:21,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:23:21,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:23:21,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:23:22,325 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 10:23:22,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:23:22,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [174659034] [2024-11-18 10:23:22,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [174659034] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:23:22,326 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:23:22,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-18 10:23:22,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723752805] [2024-11-18 10:23:22,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:23:22,326 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 10:23:22,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:23:22,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 10:23:22,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:23:22,332 INFO L87 Difference]: Start difference. First operand 784 states and 1076 transitions. Second operand has 3 states, 3 states have (on average 40.0) internal successors, (120), 2 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:23:23,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:23:23,054 INFO L93 Difference]: Finished difference Result 1936 states and 2599 transitions. [2024-11-18 10:23:23,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 10:23:23,055 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 2 states have internal predecessors, (120), 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 120 [2024-11-18 10:23:23,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:23:23,059 INFO L225 Difference]: With dead ends: 1936 [2024-11-18 10:23:23,060 INFO L226 Difference]: Without dead ends: 1154 [2024-11-18 10:23:23,061 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 [2024-11-18 10:23:23,062 INFO L432 NwaCegarLoop]: 168 mSDtfsCounter, 119 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 529 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 190 SdHoareTripleChecker+Invalid, 567 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 529 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-18 10:23:23,063 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [119 Valid, 190 Invalid, 567 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 529 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-18 10:23:23,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1154 states. [2024-11-18 10:23:23,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1154 to 1153. [2024-11-18 10:23:23,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1153 states, 1152 states have (on average 1.2699652777777777) internal successors, (1463), 1152 states have internal predecessors, (1463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:23:23,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1153 states to 1153 states and 1463 transitions. [2024-11-18 10:23:23,104 INFO L78 Accepts]: Start accepts. Automaton has 1153 states and 1463 transitions. Word has length 120 [2024-11-18 10:23:23,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:23:23,104 INFO L471 AbstractCegarLoop]: Abstraction has 1153 states and 1463 transitions. [2024-11-18 10:23:23,105 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 2 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:23:23,105 INFO L276 IsEmpty]: Start isEmpty. Operand 1153 states and 1463 transitions. [2024-11-18 10:23:23,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2024-11-18 10:23:23,112 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:23:23,112 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 10:23:23,112 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-18 10:23:23,113 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:23:23,113 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:23:23,113 INFO L85 PathProgramCache]: Analyzing trace with hash -2125699946, now seen corresponding path program 1 times [2024-11-18 10:23:23,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:23:23,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241899179] [2024-11-18 10:23:23,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:23:23,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:23:23,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:23:23,406 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 10:23:23,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:23:23,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241899179] [2024-11-18 10:23:23,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [241899179] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:23:23,408 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:23:23,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 10:23:23,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431580267] [2024-11-18 10:23:23,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:23:23,409 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 10:23:23,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:23:23,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 10:23:23,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:23:23,410 INFO L87 Difference]: Start difference. First operand 1153 states and 1463 transitions. Second operand has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 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) [2024-11-18 10:23:24,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:23:24,180 INFO L93 Difference]: Finished difference Result 2679 states and 3481 transitions. [2024-11-18 10:23:24,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 10:23:24,180 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 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) Word has length 162 [2024-11-18 10:23:24,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:23:24,188 INFO L225 Difference]: With dead ends: 2679 [2024-11-18 10:23:24,189 INFO L226 Difference]: Without dead ends: 1712 [2024-11-18 10:23:24,193 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:23:24,194 INFO L432 NwaCegarLoop]: 312 mSDtfsCounter, 156 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 546 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 332 SdHoareTripleChecker+Invalid, 645 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 546 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-18 10:23:24,196 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [156 Valid, 332 Invalid, 645 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 546 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-18 10:23:24,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1712 states. [2024-11-18 10:23:24,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1712 to 1521. [2024-11-18 10:23:24,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1521 states, 1520 states have (on average 1.255921052631579) internal successors, (1909), 1520 states have internal predecessors, (1909), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:23:24,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1521 states to 1521 states and 1909 transitions. [2024-11-18 10:23:24,226 INFO L78 Accepts]: Start accepts. Automaton has 1521 states and 1909 transitions. Word has length 162 [2024-11-18 10:23:24,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:23:24,228 INFO L471 AbstractCegarLoop]: Abstraction has 1521 states and 1909 transitions. [2024-11-18 10:23:24,228 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 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) [2024-11-18 10:23:24,228 INFO L276 IsEmpty]: Start isEmpty. Operand 1521 states and 1909 transitions. [2024-11-18 10:23:24,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2024-11-18 10:23:24,232 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:23:24,232 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 10:23:24,232 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-18 10:23:24,233 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:23:24,234 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:23:24,234 INFO L85 PathProgramCache]: Analyzing trace with hash 1101521033, now seen corresponding path program 1 times [2024-11-18 10:23:24,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:23:24,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975555127] [2024-11-18 10:23:24,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:23:24,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:23:24,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:23:24,498 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 95 proven. 0 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2024-11-18 10:23:24,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:23:24,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [975555127] [2024-11-18 10:23:24,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [975555127] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:23:24,499 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:23:24,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 10:23:24,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567918868] [2024-11-18 10:23:24,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:23:24,513 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 10:23:24,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:23:24,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 10:23:24,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:23:24,514 INFO L87 Difference]: Start difference. First operand 1521 states and 1909 transitions. Second operand has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:23:25,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:23:25,350 INFO L93 Difference]: Finished difference Result 3597 states and 4559 transitions. [2024-11-18 10:23:25,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 10:23:25,350 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 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 232 [2024-11-18 10:23:25,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:23:25,358 INFO L225 Difference]: With dead ends: 3597 [2024-11-18 10:23:25,358 INFO L226 Difference]: Without dead ends: 2078 [2024-11-18 10:23:25,360 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:23:25,363 INFO L432 NwaCegarLoop]: 370 mSDtfsCounter, 147 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 594 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 391 SdHoareTripleChecker+Invalid, 680 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 594 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-18 10:23:25,363 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [147 Valid, 391 Invalid, 680 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 594 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-18 10:23:25,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2078 states. [2024-11-18 10:23:25,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2078 to 1889. [2024-11-18 10:23:25,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1889 states, 1888 states have (on average 1.2473516949152543) internal successors, (2355), 1888 states have internal predecessors, (2355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:23:25,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1889 states to 1889 states and 2355 transitions. [2024-11-18 10:23:25,401 INFO L78 Accepts]: Start accepts. Automaton has 1889 states and 2355 transitions. Word has length 232 [2024-11-18 10:23:25,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:23:25,403 INFO L471 AbstractCegarLoop]: Abstraction has 1889 states and 2355 transitions. [2024-11-18 10:23:25,403 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:23:25,404 INFO L276 IsEmpty]: Start isEmpty. Operand 1889 states and 2355 transitions. [2024-11-18 10:23:25,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2024-11-18 10:23:25,407 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:23:25,408 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 10:23:25,408 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-18 10:23:25,408 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:23:25,409 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:23:25,409 INFO L85 PathProgramCache]: Analyzing trace with hash 697992722, now seen corresponding path program 1 times [2024-11-18 10:23:25,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:23:25,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1790807236] [2024-11-18 10:23:25,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:23:25,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:23:25,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:23:25,846 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 191 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 10:23:25,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:23:25,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1790807236] [2024-11-18 10:23:25,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1790807236] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:23:25,847 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:23:25,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 10:23:25,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818357378] [2024-11-18 10:23:25,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:23:25,849 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 10:23:25,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:23:25,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 10:23:25,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:23:25,850 INFO L87 Difference]: Start difference. First operand 1889 states and 2355 transitions. Second operand has 3 states, 3 states have (on average 86.33333333333333) internal successors, (259), 3 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:23:26,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:23:26,645 INFO L93 Difference]: Finished difference Result 5077 states and 6327 transitions. [2024-11-18 10:23:26,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 10:23:26,646 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 86.33333333333333) internal successors, (259), 3 states have internal predecessors, (259), 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 259 [2024-11-18 10:23:26,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:23:26,661 INFO L225 Difference]: With dead ends: 5077 [2024-11-18 10:23:26,662 INFO L226 Difference]: Without dead ends: 3190 [2024-11-18 10:23:26,665 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:23:26,666 INFO L432 NwaCegarLoop]: 118 mSDtfsCounter, 123 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 592 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 665 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 592 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-18 10:23:26,667 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [123 Valid, 141 Invalid, 665 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 592 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-18 10:23:26,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3190 states. [2024-11-18 10:23:26,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3190 to 3186. [2024-11-18 10:23:26,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3186 states, 3185 states have (on average 1.2160125588697017) internal successors, (3873), 3185 states have internal predecessors, (3873), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:23:26,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3186 states to 3186 states and 3873 transitions. [2024-11-18 10:23:26,721 INFO L78 Accepts]: Start accepts. Automaton has 3186 states and 3873 transitions. Word has length 259 [2024-11-18 10:23:26,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:23:26,722 INFO L471 AbstractCegarLoop]: Abstraction has 3186 states and 3873 transitions. [2024-11-18 10:23:26,722 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 86.33333333333333) internal successors, (259), 3 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:23:26,722 INFO L276 IsEmpty]: Start isEmpty. Operand 3186 states and 3873 transitions. [2024-11-18 10:23:26,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2024-11-18 10:23:26,726 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:23:26,727 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 10:23:26,727 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-18 10:23:26,727 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:23:26,728 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:23:26,728 INFO L85 PathProgramCache]: Analyzing trace with hash 387212821, now seen corresponding path program 1 times [2024-11-18 10:23:26,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:23:26,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401390688] [2024-11-18 10:23:26,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:23:26,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:23:26,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:23:27,183 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 95 proven. 0 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2024-11-18 10:23:27,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:23:27,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401390688] [2024-11-18 10:23:27,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [401390688] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:23:27,184 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:23:27,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 10:23:27,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836959946] [2024-11-18 10:23:27,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:23:27,185 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 10:23:27,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:23:27,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 10:23:27,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:23:27,186 INFO L87 Difference]: Start difference. First operand 3186 states and 3873 transitions. Second operand has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 3 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:23:27,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:23:27,968 INFO L93 Difference]: Finished difference Result 8220 states and 9834 transitions. [2024-11-18 10:23:27,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 10:23:27,969 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 3 states have internal predecessors, (179), 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 265 [2024-11-18 10:23:27,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:23:27,986 INFO L225 Difference]: With dead ends: 8220 [2024-11-18 10:23:27,986 INFO L226 Difference]: Without dead ends: 5036 [2024-11-18 10:23:27,991 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:23:27,993 INFO L432 NwaCegarLoop]: 363 mSDtfsCounter, 171 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 560 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 392 SdHoareTripleChecker+Invalid, 581 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 560 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-18 10:23:27,995 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [171 Valid, 392 Invalid, 581 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 560 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-18 10:23:28,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5036 states. [2024-11-18 10:23:28,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5036 to 5035. [2024-11-18 10:23:28,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5035 states, 5034 states have (on average 1.1835518474374256) internal successors, (5958), 5034 states have internal predecessors, (5958), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:23:28,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5035 states to 5035 states and 5958 transitions. [2024-11-18 10:23:28,088 INFO L78 Accepts]: Start accepts. Automaton has 5035 states and 5958 transitions. Word has length 265 [2024-11-18 10:23:28,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:23:28,089 INFO L471 AbstractCegarLoop]: Abstraction has 5035 states and 5958 transitions. [2024-11-18 10:23:28,089 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 3 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:23:28,089 INFO L276 IsEmpty]: Start isEmpty. Operand 5035 states and 5958 transitions. [2024-11-18 10:23:28,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2024-11-18 10:23:28,094 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:23:28,095 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 10:23:28,095 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-18 10:23:28,095 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:23:28,095 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:23:28,096 INFO L85 PathProgramCache]: Analyzing trace with hash -914056920, now seen corresponding path program 1 times [2024-11-18 10:23:28,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:23:28,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615942952] [2024-11-18 10:23:28,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:23:28,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:23:28,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:23:29,111 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 137 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 10:23:29,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:23:29,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615942952] [2024-11-18 10:23:29,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1615942952] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 10:23:29,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [580958973] [2024-11-18 10:23:29,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:23:29,112 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 10:23:29,112 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 10:23:29,115 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 10:23:29,116 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-18 10:23:29,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:23:29,251 INFO L255 TraceCheckSpWp]: Trace formula consists of 377 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-18 10:23:29,263 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 10:23:29,687 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 95 proven. 0 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2024-11-18 10:23:29,687 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 10:23:29,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [580958973] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:23:29,688 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 10:23:29,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2024-11-18 10:23:29,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286720084] [2024-11-18 10:23:29,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:23:29,689 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 10:23:29,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:23:29,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 10:23:29,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-18 10:23:29,690 INFO L87 Difference]: Start difference. First operand 5035 states and 5958 transitions. Second operand has 4 states, 4 states have (on average 41.0) internal successors, (164), 3 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:23:30,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:23:30,858 INFO L93 Difference]: Finished difference Result 13958 states and 16430 transitions. [2024-11-18 10:23:30,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 10:23:30,859 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 41.0) internal successors, (164), 3 states have internal predecessors, (164), 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 268 [2024-11-18 10:23:30,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:23:30,887 INFO L225 Difference]: With dead ends: 13958 [2024-11-18 10:23:30,888 INFO L226 Difference]: Without dead ends: 9293 [2024-11-18 10:23:30,895 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 266 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-18 10:23:30,897 INFO L432 NwaCegarLoop]: 132 mSDtfsCounter, 274 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 1130 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 274 SdHoareTripleChecker+Valid, 192 SdHoareTripleChecker+Invalid, 1156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 1130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-18 10:23:30,897 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [274 Valid, 192 Invalid, 1156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 1130 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-18 10:23:30,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9293 states. [2024-11-18 10:23:30,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9293 to 4667. [2024-11-18 10:23:30,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4667 states, 4666 states have (on average 1.1941705957994) internal successors, (5572), 4666 states have internal predecessors, (5572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:23:31,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4667 states to 4667 states and 5572 transitions. [2024-11-18 10:23:31,011 INFO L78 Accepts]: Start accepts. Automaton has 4667 states and 5572 transitions. Word has length 268 [2024-11-18 10:23:31,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:23:31,012 INFO L471 AbstractCegarLoop]: Abstraction has 4667 states and 5572 transitions. [2024-11-18 10:23:31,012 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 41.0) internal successors, (164), 3 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:23:31,012 INFO L276 IsEmpty]: Start isEmpty. Operand 4667 states and 5572 transitions. [2024-11-18 10:23:31,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2024-11-18 10:23:31,017 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:23:31,017 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 10:23:31,036 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-18 10:23:31,218 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 10:23:31,219 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:23:31,220 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:23:31,220 INFO L85 PathProgramCache]: Analyzing trace with hash 448170155, now seen corresponding path program 1 times [2024-11-18 10:23:31,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:23:31,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587473963] [2024-11-18 10:23:31,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:23:31,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:23:31,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:23:31,775 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 191 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 10:23:31,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:23:31,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587473963] [2024-11-18 10:23:31,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [587473963] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:23:31,777 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:23:31,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 10:23:31,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933498240] [2024-11-18 10:23:31,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:23:31,778 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 10:23:31,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:23:31,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 10:23:31,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-18 10:23:31,782 INFO L87 Difference]: Start difference. First operand 4667 states and 5572 transitions. Second operand has 5 states, 5 states have (on average 53.8) internal successors, (269), 4 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:23:33,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:23:33,440 INFO L93 Difference]: Finished difference Result 15972 states and 19215 transitions. [2024-11-18 10:23:33,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 10:23:33,442 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 53.8) internal successors, (269), 4 states have internal predecessors, (269), 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 269 [2024-11-18 10:23:33,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:23:33,479 INFO L225 Difference]: With dead ends: 15972 [2024-11-18 10:23:33,480 INFO L226 Difference]: Without dead ends: 11307 [2024-11-18 10:23:33,487 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-18 10:23:33,489 INFO L432 NwaCegarLoop]: 84 mSDtfsCounter, 367 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 1583 mSolverCounterSat, 311 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 367 SdHoareTripleChecker+Valid, 129 SdHoareTripleChecker+Invalid, 1894 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 311 IncrementalHoareTripleChecker+Valid, 1583 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-18 10:23:33,490 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [367 Valid, 129 Invalid, 1894 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [311 Valid, 1583 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-18 10:23:33,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11307 states. [2024-11-18 10:23:33,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11307 to 10930. [2024-11-18 10:23:33,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10930 states, 10929 states have (on average 1.1707384024155916) internal successors, (12795), 10929 states have internal predecessors, (12795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:23:33,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10930 states to 10930 states and 12795 transitions. [2024-11-18 10:23:33,688 INFO L78 Accepts]: Start accepts. Automaton has 10930 states and 12795 transitions. Word has length 269 [2024-11-18 10:23:33,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:23:33,689 INFO L471 AbstractCegarLoop]: Abstraction has 10930 states and 12795 transitions. [2024-11-18 10:23:33,689 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 53.8) internal successors, (269), 4 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:23:33,690 INFO L276 IsEmpty]: Start isEmpty. Operand 10930 states and 12795 transitions. [2024-11-18 10:23:33,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2024-11-18 10:23:33,696 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:23:33,697 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 10:23:33,697 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-18 10:23:33,697 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:23:33,697 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:23:33,697 INFO L85 PathProgramCache]: Analyzing trace with hash 510762410, now seen corresponding path program 1 times [2024-11-18 10:23:33,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:23:33,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51137302] [2024-11-18 10:23:33,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:23:33,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:23:33,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:23:33,962 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 95 proven. 0 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2024-11-18 10:23:33,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:23:33,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51137302] [2024-11-18 10:23:33,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [51137302] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:23:33,963 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:23:33,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 10:23:33,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362583425] [2024-11-18 10:23:33,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:23:33,965 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 10:23:33,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:23:33,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 10:23:33,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:23:33,966 INFO L87 Difference]: Start difference. First operand 10930 states and 12795 transitions. Second operand has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 3 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:23:34,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:23:34,604 INFO L93 Difference]: Finished difference Result 21488 states and 25200 transitions. [2024-11-18 10:23:34,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 10:23:34,604 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 3 states have internal predecessors, (179), 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 280 [2024-11-18 10:23:34,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:23:34,627 INFO L225 Difference]: With dead ends: 21488 [2024-11-18 10:23:34,627 INFO L226 Difference]: Without dead ends: 10928 [2024-11-18 10:23:34,639 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:23:34,640 INFO L432 NwaCegarLoop]: 284 mSDtfsCounter, 185 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 551 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 185 SdHoareTripleChecker+Valid, 304 SdHoareTripleChecker+Invalid, 603 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 551 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-18 10:23:34,641 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [185 Valid, 304 Invalid, 603 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 551 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-18 10:23:34,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10928 states. [2024-11-18 10:23:34,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10928 to 10744. [2024-11-18 10:23:34,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10744 states, 10743 states have (on average 1.141952899562506) internal successors, (12268), 10743 states have internal predecessors, (12268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:23:34,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10744 states to 10744 states and 12268 transitions. [2024-11-18 10:23:34,791 INFO L78 Accepts]: Start accepts. Automaton has 10744 states and 12268 transitions. Word has length 280 [2024-11-18 10:23:34,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:23:34,791 INFO L471 AbstractCegarLoop]: Abstraction has 10744 states and 12268 transitions. [2024-11-18 10:23:34,792 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 3 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:23:34,792 INFO L276 IsEmpty]: Start isEmpty. Operand 10744 states and 12268 transitions. [2024-11-18 10:23:34,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 284 [2024-11-18 10:23:34,798 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:23:34,799 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 10:23:34,800 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-18 10:23:34,800 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:23:34,800 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:23:34,800 INFO L85 PathProgramCache]: Analyzing trace with hash 577294273, now seen corresponding path program 1 times [2024-11-18 10:23:34,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:23:34,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785301336] [2024-11-18 10:23:34,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:23:34,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:23:34,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:23:35,233 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 95 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 10:23:35,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:23:35,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785301336] [2024-11-18 10:23:35,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [785301336] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 10:23:35,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1111223759] [2024-11-18 10:23:35,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:23:35,234 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 10:23:35,234 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 10:23:35,236 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 10:23:35,237 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-18 10:23:35,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:23:35,361 INFO L255 TraceCheckSpWp]: Trace formula consists of 396 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-18 10:23:35,369 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 10:23:35,689 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 200 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 10:23:35,689 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 10:23:35,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1111223759] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:23:35,690 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 10:23:35,690 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2024-11-18 10:23:35,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966847568] [2024-11-18 10:23:35,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:23:35,691 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 10:23:35,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:23:35,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 10:23:35,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-18 10:23:35,693 INFO L87 Difference]: Start difference. First operand 10744 states and 12268 transitions. Second operand has 3 states, 3 states have (on average 94.33333333333333) internal successors, (283), 3 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:23:36,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:23:36,316 INFO L93 Difference]: Finished difference Result 22426 states and 25761 transitions. [2024-11-18 10:23:36,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 10:23:36,317 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 94.33333333333333) internal successors, (283), 3 states have internal predecessors, (283), 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 283 [2024-11-18 10:23:36,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:23:36,338 INFO L225 Difference]: With dead ends: 22426 [2024-11-18 10:23:36,338 INFO L226 Difference]: Without dead ends: 12052 [2024-11-18 10:23:36,349 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 286 GetRequests, 282 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-18 10:23:36,350 INFO L432 NwaCegarLoop]: 321 mSDtfsCounter, 99 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 567 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 342 SdHoareTripleChecker+Invalid, 611 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 567 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-18 10:23:36,351 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 342 Invalid, 611 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 567 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-18 10:23:36,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12052 states. [2024-11-18 10:23:36,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12052 to 12043. [2024-11-18 10:23:36,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12043 states, 12042 states have (on average 1.143996013951171) internal successors, (13776), 12042 states have internal predecessors, (13776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:23:36,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12043 states to 12043 states and 13776 transitions. [2024-11-18 10:23:36,558 INFO L78 Accepts]: Start accepts. Automaton has 12043 states and 13776 transitions. Word has length 283 [2024-11-18 10:23:36,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:23:36,559 INFO L471 AbstractCegarLoop]: Abstraction has 12043 states and 13776 transitions. [2024-11-18 10:23:36,559 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 94.33333333333333) internal successors, (283), 3 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:23:36,559 INFO L276 IsEmpty]: Start isEmpty. Operand 12043 states and 13776 transitions. [2024-11-18 10:23:36,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2024-11-18 10:23:36,566 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:23:36,566 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 10:23:36,584 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-18 10:23:36,767 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-18 10:23:36,768 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:23:36,768 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:23:36,768 INFO L85 PathProgramCache]: Analyzing trace with hash -1277495970, now seen corresponding path program 1 times [2024-11-18 10:23:36,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:23:36,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138727969] [2024-11-18 10:23:36,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:23:36,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:23:36,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:23:37,197 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 201 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 10:23:37,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:23:37,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138727969] [2024-11-18 10:23:37,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2138727969] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:23:37,198 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:23:37,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 10:23:37,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655178675] [2024-11-18 10:23:37,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:23:37,199 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 10:23:37,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:23:37,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 10:23:37,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-18 10:23:37,200 INFO L87 Difference]: Start difference. First operand 12043 states and 13776 transitions. Second operand has 4 states, 4 states have (on average 71.5) internal successors, (286), 4 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:23:38,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:23:38,211 INFO L93 Difference]: Finished difference Result 26298 states and 30094 transitions. [2024-11-18 10:23:38,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 10:23:38,212 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 71.5) internal successors, (286), 4 states have internal predecessors, (286), 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 286 [2024-11-18 10:23:38,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:23:38,239 INFO L225 Difference]: With dead ends: 26298 [2024-11-18 10:23:38,239 INFO L226 Difference]: Without dead ends: 14625 [2024-11-18 10:23:38,253 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-18 10:23:38,253 INFO L432 NwaCegarLoop]: 62 mSDtfsCounter, 267 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 1097 mSolverCounterSat, 176 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 267 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 1273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 176 IncrementalHoareTripleChecker+Valid, 1097 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-18 10:23:38,254 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [267 Valid, 97 Invalid, 1273 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [176 Valid, 1097 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-18 10:23:38,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14625 states. [2024-11-18 10:23:38,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14625 to 14619. [2024-11-18 10:23:38,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14619 states, 14618 states have (on average 1.1313449172253387) internal successors, (16538), 14618 states have internal predecessors, (16538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:23:38,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14619 states to 14619 states and 16538 transitions. [2024-11-18 10:23:38,439 INFO L78 Accepts]: Start accepts. Automaton has 14619 states and 16538 transitions. Word has length 286 [2024-11-18 10:23:38,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:23:38,440 INFO L471 AbstractCegarLoop]: Abstraction has 14619 states and 16538 transitions. [2024-11-18 10:23:38,440 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 71.5) internal successors, (286), 4 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:23:38,440 INFO L276 IsEmpty]: Start isEmpty. Operand 14619 states and 16538 transitions. [2024-11-18 10:23:38,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 289 [2024-11-18 10:23:38,448 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:23:38,448 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 10:23:38,448 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-18 10:23:38,448 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:23:38,449 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:23:38,449 INFO L85 PathProgramCache]: Analyzing trace with hash -1227652913, now seen corresponding path program 1 times [2024-11-18 10:23:38,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:23:38,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081225197] [2024-11-18 10:23:38,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:23:38,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:23:38,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:23:39,126 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 206 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 10:23:39,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:23:39,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081225197] [2024-11-18 10:23:39,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1081225197] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:23:39,127 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:23:39,128 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 10:23:39,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890149950] [2024-11-18 10:23:39,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:23:39,129 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 10:23:39,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:23:39,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 10:23:39,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-18 10:23:39,131 INFO L87 Difference]: Start difference. First operand 14619 states and 16538 transitions. Second operand has 4 states, 4 states have (on average 72.0) internal successors, (288), 4 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:23:40,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:23:40,171 INFO L93 Difference]: Finished difference Result 30912 states and 35030 transitions. [2024-11-18 10:23:40,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 10:23:40,172 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 72.0) internal successors, (288), 4 states have internal predecessors, (288), 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 288 [2024-11-18 10:23:40,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:23:40,196 INFO L225 Difference]: With dead ends: 30912 [2024-11-18 10:23:40,196 INFO L226 Difference]: Without dead ends: 16663 [2024-11-18 10:23:40,211 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-18 10:23:40,212 INFO L432 NwaCegarLoop]: 123 mSDtfsCounter, 252 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 1170 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 252 SdHoareTripleChecker+Valid, 178 SdHoareTripleChecker+Invalid, 1262 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 1170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-18 10:23:40,212 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [252 Valid, 178 Invalid, 1262 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 1170 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-18 10:23:40,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16663 states. [2024-11-18 10:23:40,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16663 to 15550. [2024-11-18 10:23:40,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15550 states, 15549 states have (on average 1.1291401376294294) internal successors, (17557), 15549 states have internal predecessors, (17557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:23:40,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15550 states to 15550 states and 17557 transitions. [2024-11-18 10:23:40,454 INFO L78 Accepts]: Start accepts. Automaton has 15550 states and 17557 transitions. Word has length 288 [2024-11-18 10:23:40,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:23:40,455 INFO L471 AbstractCegarLoop]: Abstraction has 15550 states and 17557 transitions. [2024-11-18 10:23:40,455 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 72.0) internal successors, (288), 4 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:23:40,455 INFO L276 IsEmpty]: Start isEmpty. Operand 15550 states and 17557 transitions. [2024-11-18 10:23:40,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 313 [2024-11-18 10:23:40,464 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:23:40,464 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 10:23:40,464 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-18 10:23:40,465 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:23:40,466 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:23:40,466 INFO L85 PathProgramCache]: Analyzing trace with hash 100748151, now seen corresponding path program 1 times [2024-11-18 10:23:40,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:23:40,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248119181] [2024-11-18 10:23:40,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:23:40,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:23:40,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:23:40,657 INFO L134 CoverageAnalysis]: Checked inductivity of 219 backedges. 95 proven. 0 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2024-11-18 10:23:40,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:23:40,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248119181] [2024-11-18 10:23:40,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1248119181] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:23:40,658 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:23:40,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 10:23:40,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752267476] [2024-11-18 10:23:40,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:23:40,659 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 10:23:40,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:23:40,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 10:23:40,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:23:40,660 INFO L87 Difference]: Start difference. First operand 15550 states and 17557 transitions. Second operand has 3 states, 3 states have (on average 63.0) internal successors, (189), 3 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:23:41,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:23:41,318 INFO L93 Difference]: Finished difference Result 33857 states and 38353 transitions. [2024-11-18 10:23:41,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 10:23:41,318 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 63.0) internal successors, (189), 3 states have internal predecessors, (189), 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 312 [2024-11-18 10:23:41,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:23:41,343 INFO L225 Difference]: With dead ends: 33857 [2024-11-18 10:23:41,344 INFO L226 Difference]: Without dead ends: 18677 [2024-11-18 10:23:41,357 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:23:41,358 INFO L432 NwaCegarLoop]: 334 mSDtfsCounter, 152 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 577 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 357 SdHoareTripleChecker+Invalid, 665 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 577 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-18 10:23:41,358 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [152 Valid, 357 Invalid, 665 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 577 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-18 10:23:41,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18677 states. [2024-11-18 10:23:41,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18677 to 17573. [2024-11-18 10:23:41,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17573 states, 17572 states have (on average 1.1226951969041656) internal successors, (19728), 17572 states have internal predecessors, (19728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:23:41,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17573 states to 17573 states and 19728 transitions. [2024-11-18 10:23:41,561 INFO L78 Accepts]: Start accepts. Automaton has 17573 states and 19728 transitions. Word has length 312 [2024-11-18 10:23:41,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:23:41,561 INFO L471 AbstractCegarLoop]: Abstraction has 17573 states and 19728 transitions. [2024-11-18 10:23:41,562 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 63.0) internal successors, (189), 3 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:23:41,562 INFO L276 IsEmpty]: Start isEmpty. Operand 17573 states and 19728 transitions. [2024-11-18 10:23:41,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 338 [2024-11-18 10:23:41,573 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:23:41,573 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 10:23:41,573 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-18 10:23:41,573 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:23:41,574 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:23:41,574 INFO L85 PathProgramCache]: Analyzing trace with hash 1462001354, now seen corresponding path program 1 times [2024-11-18 10:23:41,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:23:41,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484919887] [2024-11-18 10:23:41,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:23:41,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:23:41,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:23:42,585 INFO L134 CoverageAnalysis]: Checked inductivity of 385 backedges. 221 proven. 72 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2024-11-18 10:23:42,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:23:42,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484919887] [2024-11-18 10:23:42,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [484919887] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 10:23:42,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [805991990] [2024-11-18 10:23:42,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:23:42,587 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 10:23:42,587 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 10:23:42,590 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 10:23:42,591 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-18 10:23:42,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:23:42,732 INFO L255 TraceCheckSpWp]: Trace formula consists of 470 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-18 10:23:42,737 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 10:23:43,041 INFO L134 CoverageAnalysis]: Checked inductivity of 385 backedges. 317 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2024-11-18 10:23:43,042 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 10:23:43,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [805991990] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:23:43,042 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 10:23:43,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2024-11-18 10:23:43,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067702510] [2024-11-18 10:23:43,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:23:43,043 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 10:23:43,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:23:43,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 10:23:43,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-18 10:23:43,044 INFO L87 Difference]: Start difference. First operand 17573 states and 19728 transitions. Second operand has 3 states, 3 states have (on average 90.0) internal successors, (270), 3 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:23:43,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:23:43,711 INFO L93 Difference]: Finished difference Result 37361 states and 41940 transitions. [2024-11-18 10:23:43,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 10:23:43,712 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 90.0) internal successors, (270), 3 states have internal predecessors, (270), 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 337 [2024-11-18 10:23:43,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:23:43,731 INFO L225 Difference]: With dead ends: 37361 [2024-11-18 10:23:43,731 INFO L226 Difference]: Without dead ends: 19974 [2024-11-18 10:23:43,745 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 341 GetRequests, 337 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-18 10:23:43,745 INFO L432 NwaCegarLoop]: 344 mSDtfsCounter, 84 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 500 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 365 SdHoareTripleChecker+Invalid, 544 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 500 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-18 10:23:43,746 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 365 Invalid, 544 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 500 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-18 10:23:43,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19974 states. [2024-11-18 10:23:43,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19974 to 19235. [2024-11-18 10:23:43,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19235 states, 19234 states have (on average 1.116928356036186) internal successors, (21483), 19234 states have internal predecessors, (21483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:23:43,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19235 states to 19235 states and 21483 transitions. [2024-11-18 10:23:43,969 INFO L78 Accepts]: Start accepts. Automaton has 19235 states and 21483 transitions. Word has length 337 [2024-11-18 10:23:43,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:23:43,970 INFO L471 AbstractCegarLoop]: Abstraction has 19235 states and 21483 transitions. [2024-11-18 10:23:43,970 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 90.0) internal successors, (270), 3 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:23:43,970 INFO L276 IsEmpty]: Start isEmpty. Operand 19235 states and 21483 transitions. [2024-11-18 10:23:43,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 359 [2024-11-18 10:23:43,982 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:23:43,982 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 10:23:44,001 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-18 10:23:44,183 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 10:23:44,184 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:23:44,184 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:23:44,184 INFO L85 PathProgramCache]: Analyzing trace with hash -1351852439, now seen corresponding path program 1 times [2024-11-18 10:23:44,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:23:44,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [97822456] [2024-11-18 10:23:44,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:23:44,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:23:44,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:23:45,262 INFO L134 CoverageAnalysis]: Checked inductivity of 427 backedges. 254 proven. 54 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2024-11-18 10:23:45,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:23:45,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [97822456] [2024-11-18 10:23:45,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [97822456] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 10:23:45,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [834965644] [2024-11-18 10:23:45,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:23:45,264 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 10:23:45,264 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 10:23:45,265 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 10:23:45,267 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-18 10:23:45,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:23:45,415 INFO L255 TraceCheckSpWp]: Trace formula consists of 491 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-18 10:23:45,419 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 10:23:45,702 INFO L134 CoverageAnalysis]: Checked inductivity of 427 backedges. 338 proven. 0 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2024-11-18 10:23:45,702 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 10:23:45,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [834965644] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:23:45,703 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 10:23:45,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2024-11-18 10:23:45,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250286642] [2024-11-18 10:23:45,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:23:45,704 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 10:23:45,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:23:45,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 10:23:45,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-18 10:23:45,705 INFO L87 Difference]: Start difference. First operand 19235 states and 21483 transitions. Second operand has 3 states, 3 states have (on average 90.0) internal successors, (270), 3 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:23:46,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:23:46,313 INFO L93 Difference]: Finished difference Result 39389 states and 43927 transitions. [2024-11-18 10:23:46,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 10:23:46,314 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 90.0) internal successors, (270), 3 states have internal predecessors, (270), 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 358 [2024-11-18 10:23:46,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:23:46,332 INFO L225 Difference]: With dead ends: 39389 [2024-11-18 10:23:46,332 INFO L226 Difference]: Without dead ends: 20156 [2024-11-18 10:23:46,339 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 362 GetRequests, 358 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-18 10:23:46,340 INFO L432 NwaCegarLoop]: 150 mSDtfsCounter, 91 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 476 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 170 SdHoareTripleChecker+Invalid, 546 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 476 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-18 10:23:46,340 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 170 Invalid, 546 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 476 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-18 10:23:46,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20156 states. [2024-11-18 10:23:46,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20156 to 17753. [2024-11-18 10:23:46,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17753 states, 17752 states have (on average 1.1128323569175305) internal successors, (19755), 17752 states have internal predecessors, (19755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:23:46,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17753 states to 17753 states and 19755 transitions. [2024-11-18 10:23:46,526 INFO L78 Accepts]: Start accepts. Automaton has 17753 states and 19755 transitions. Word has length 358 [2024-11-18 10:23:46,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:23:46,526 INFO L471 AbstractCegarLoop]: Abstraction has 17753 states and 19755 transitions. [2024-11-18 10:23:46,526 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 90.0) internal successors, (270), 3 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:23:46,527 INFO L276 IsEmpty]: Start isEmpty. Operand 17753 states and 19755 transitions. [2024-11-18 10:23:46,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 376 [2024-11-18 10:23:46,537 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:23:46,537 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 10:23:46,555 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-18 10:23:46,738 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-18 10:23:46,738 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:23:46,739 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:23:46,739 INFO L85 PathProgramCache]: Analyzing trace with hash -93934851, now seen corresponding path program 1 times [2024-11-18 10:23:46,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:23:46,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556051378] [2024-11-18 10:23:46,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:23:46,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:23:46,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:23:47,625 INFO L134 CoverageAnalysis]: Checked inductivity of 441 backedges. 267 proven. 78 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2024-11-18 10:23:47,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:23:47,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556051378] [2024-11-18 10:23:47,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [556051378] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 10:23:47,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [761870143] [2024-11-18 10:23:47,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:23:47,626 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 10:23:47,626 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 10:23:47,628 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 10:23:47,630 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-18 10:23:47,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:23:47,779 INFO L255 TraceCheckSpWp]: Trace formula consists of 511 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-18 10:23:47,783 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 10:23:48,332 INFO L134 CoverageAnalysis]: Checked inductivity of 441 backedges. 202 proven. 143 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2024-11-18 10:23:48,332 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 10:23:48,786 INFO L134 CoverageAnalysis]: Checked inductivity of 441 backedges. 297 proven. 48 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2024-11-18 10:23:48,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [761870143] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 10:23:48,786 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 10:23:48,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 11 [2024-11-18 10:23:48,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309602461] [2024-11-18 10:23:48,787 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 10:23:48,787 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-18 10:23:48,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:23:48,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-18 10:23:48,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2024-11-18 10:23:48,789 INFO L87 Difference]: Start difference. First operand 17753 states and 19755 transitions. Second operand has 11 states, 11 states have (on average 76.18181818181819) internal successors, (838), 11 states have internal predecessors, (838), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:23:53,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:23:53,463 INFO L93 Difference]: Finished difference Result 47513 states and 52862 transitions. [2024-11-18 10:23:53,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-18 10:23:53,464 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 76.18181818181819) internal successors, (838), 11 states have internal predecessors, (838), 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 375 [2024-11-18 10:23:53,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:23:53,504 INFO L225 Difference]: With dead ends: 47513 [2024-11-18 10:23:53,505 INFO L226 Difference]: Without dead ends: 29210 [2024-11-18 10:23:53,521 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 781 GetRequests, 758 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=187, Invalid=413, Unknown=0, NotChecked=0, Total=600 [2024-11-18 10:23:53,522 INFO L432 NwaCegarLoop]: 44 mSDtfsCounter, 2487 mSDsluCounter, 195 mSDsCounter, 0 mSdLazyCounter, 6617 mSolverCounterSat, 723 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2487 SdHoareTripleChecker+Valid, 239 SdHoareTripleChecker+Invalid, 7340 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 723 IncrementalHoareTripleChecker+Valid, 6617 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2024-11-18 10:23:53,522 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2487 Valid, 239 Invalid, 7340 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [723 Valid, 6617 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2024-11-18 10:23:53,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29210 states. [2024-11-18 10:23:53,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29210 to 14431. [2024-11-18 10:23:53,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14431 states, 14430 states have (on average 1.1045738045738045) internal successors, (15939), 14430 states have internal predecessors, (15939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:23:53,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14431 states to 14431 states and 15939 transitions. [2024-11-18 10:23:53,735 INFO L78 Accepts]: Start accepts. Automaton has 14431 states and 15939 transitions. Word has length 375 [2024-11-18 10:23:53,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:23:53,736 INFO L471 AbstractCegarLoop]: Abstraction has 14431 states and 15939 transitions. [2024-11-18 10:23:53,736 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 76.18181818181819) internal successors, (838), 11 states have internal predecessors, (838), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:23:53,736 INFO L276 IsEmpty]: Start isEmpty. Operand 14431 states and 15939 transitions. [2024-11-18 10:23:53,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 382 [2024-11-18 10:23:53,744 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:23:53,744 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 10:23:53,759 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-18 10:23:53,948 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-18 10:23:53,949 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:23:53,949 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:23:53,949 INFO L85 PathProgramCache]: Analyzing trace with hash -1257108569, now seen corresponding path program 1 times [2024-11-18 10:23:53,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:23:53,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094756013] [2024-11-18 10:23:53,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:23:53,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:23:54,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:23:54,364 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 143 proven. 202 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2024-11-18 10:23:54,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:23:54,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094756013] [2024-11-18 10:23:54,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2094756013] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 10:23:54,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1739942476] [2024-11-18 10:23:54,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:23:54,366 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 10:23:54,366 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 10:23:54,368 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 10:23:54,369 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-18 10:23:54,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:23:54,550 INFO L255 TraceCheckSpWp]: Trace formula consists of 519 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-18 10:23:54,557 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 10:23:54,830 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 395 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-11-18 10:23:54,830 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 10:23:54,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1739942476] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:23:54,831 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 10:23:54,831 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2024-11-18 10:23:54,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877747326] [2024-11-18 10:23:54,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:23:54,832 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 10:23:54,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:23:54,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 10:23:54,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-18 10:23:54,834 INFO L87 Difference]: Start difference. First operand 14431 states and 15939 transitions. Second operand has 4 states, 4 states have (on average 83.5) internal successors, (334), 3 states have internal predecessors, (334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:23:55,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:23:55,958 INFO L93 Difference]: Finished difference Result 29972 states and 33114 transitions. [2024-11-18 10:23:55,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 10:23:55,960 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 83.5) internal successors, (334), 3 states have internal predecessors, (334), 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 381 [2024-11-18 10:23:55,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:23:55,978 INFO L225 Difference]: With dead ends: 29972 [2024-11-18 10:23:55,978 INFO L226 Difference]: Without dead ends: 15911 [2024-11-18 10:23:55,989 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 384 GetRequests, 379 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-18 10:23:55,989 INFO L432 NwaCegarLoop]: 77 mSDtfsCounter, 219 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 992 mSolverCounterSat, 258 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 219 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 1250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 258 IncrementalHoareTripleChecker+Valid, 992 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-18 10:23:55,990 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [219 Valid, 111 Invalid, 1250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [258 Valid, 992 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-18 10:23:56,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15911 states. [2024-11-18 10:23:56,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15911 to 14801. [2024-11-18 10:23:56,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14801 states, 14800 states have (on average 1.1028378378378378) internal successors, (16322), 14800 states have internal predecessors, (16322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:23:56,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14801 states to 14801 states and 16322 transitions. [2024-11-18 10:23:56,193 INFO L78 Accepts]: Start accepts. Automaton has 14801 states and 16322 transitions. Word has length 381 [2024-11-18 10:23:56,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:23:56,193 INFO L471 AbstractCegarLoop]: Abstraction has 14801 states and 16322 transitions. [2024-11-18 10:23:56,193 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 83.5) internal successors, (334), 3 states have internal predecessors, (334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:23:56,193 INFO L276 IsEmpty]: Start isEmpty. Operand 14801 states and 16322 transitions. [2024-11-18 10:23:56,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 415 [2024-11-18 10:23:56,202 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:23:56,202 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 10:23:56,215 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-18 10:23:56,403 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-18 10:23:56,403 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:23:56,403 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:23:56,403 INFO L85 PathProgramCache]: Analyzing trace with hash 1465243018, now seen corresponding path program 1 times [2024-11-18 10:23:56,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:23:56,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631650474] [2024-11-18 10:23:56,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:23:56,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:23:56,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:23:56,723 INFO L134 CoverageAnalysis]: Checked inductivity of 488 backedges. 377 proven. 0 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2024-11-18 10:23:56,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:23:56,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631650474] [2024-11-18 10:23:56,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1631650474] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:23:56,724 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:23:56,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 10:23:56,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426311380] [2024-11-18 10:23:56,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:23:56,726 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 10:23:56,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:23:56,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 10:23:56,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-18 10:23:56,727 INFO L87 Difference]: Start difference. First operand 14801 states and 16322 transitions. Second operand has 4 states, 4 states have (on average 76.0) internal successors, (304), 3 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:23:57,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:23:57,657 INFO L93 Difference]: Finished difference Result 35127 states and 38624 transitions. [2024-11-18 10:23:57,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 10:23:57,658 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 76.0) internal successors, (304), 3 states have internal predecessors, (304), 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 414 [2024-11-18 10:23:57,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:23:57,679 INFO L225 Difference]: With dead ends: 35127 [2024-11-18 10:23:57,680 INFO L226 Difference]: Without dead ends: 20696 [2024-11-18 10:23:57,690 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-18 10:23:57,691 INFO L432 NwaCegarLoop]: 32 mSDtfsCounter, 196 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 1076 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 196 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 1149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 1076 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-18 10:23:57,691 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [196 Valid, 71 Invalid, 1149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 1076 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-18 10:23:57,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20696 states. [2024-11-18 10:23:57,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20696 to 19771. [2024-11-18 10:23:57,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19771 states, 19770 states have (on average 1.0975720789074355) internal successors, (21699), 19770 states have internal predecessors, (21699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:23:57,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19771 states to 19771 states and 21699 transitions. [2024-11-18 10:23:57,878 INFO L78 Accepts]: Start accepts. Automaton has 19771 states and 21699 transitions. Word has length 414 [2024-11-18 10:23:57,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:23:57,879 INFO L471 AbstractCegarLoop]: Abstraction has 19771 states and 21699 transitions. [2024-11-18 10:23:57,879 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 76.0) internal successors, (304), 3 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:23:57,879 INFO L276 IsEmpty]: Start isEmpty. Operand 19771 states and 21699 transitions. [2024-11-18 10:23:57,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 418 [2024-11-18 10:23:57,887 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:23:57,887 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 10:23:57,887 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-18 10:23:57,887 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:23:57,888 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:23:57,888 INFO L85 PathProgramCache]: Analyzing trace with hash -1627853402, now seen corresponding path program 1 times [2024-11-18 10:23:57,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:23:57,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574516757] [2024-11-18 10:23:57,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:23:57,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:23:57,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:23:58,287 INFO L134 CoverageAnalysis]: Checked inductivity of 478 backedges. 143 proven. 229 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2024-11-18 10:23:58,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:23:58,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1574516757] [2024-11-18 10:23:58,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1574516757] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 10:23:58,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1996888678] [2024-11-18 10:23:58,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:23:58,288 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 10:23:58,288 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 10:23:58,289 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 10:23:58,290 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-18 10:23:58,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:23:58,434 INFO L255 TraceCheckSpWp]: Trace formula consists of 552 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-18 10:23:58,439 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 10:23:59,696 INFO L134 CoverageAnalysis]: Checked inductivity of 478 backedges. 248 proven. 230 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 10:23:59,696 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 10:24:01,870 INFO L134 CoverageAnalysis]: Checked inductivity of 478 backedges. 248 proven. 230 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 10:24:01,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1996888678] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 10:24:01,870 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 10:24:01,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 5] total 11 [2024-11-18 10:24:01,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126117548] [2024-11-18 10:24:01,871 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 10:24:01,872 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-18 10:24:01,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:24:01,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-18 10:24:01,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2024-11-18 10:24:01,874 INFO L87 Difference]: Start difference. First operand 19771 states and 21699 transitions. Second operand has 12 states, 12 states have (on average 80.83333333333333) internal successors, (970), 11 states have internal predecessors, (970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:24:07,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:24:07,715 INFO L93 Difference]: Finished difference Result 54514 states and 59559 transitions. [2024-11-18 10:24:07,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-11-18 10:24:07,715 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 80.83333333333333) internal successors, (970), 11 states have internal predecessors, (970), 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 417 [2024-11-18 10:24:07,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:24:07,757 INFO L225 Difference]: With dead ends: 54514 [2024-11-18 10:24:07,757 INFO L226 Difference]: Without dead ends: 34745 [2024-11-18 10:24:07,770 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 862 GetRequests, 826 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 378 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=395, Invalid=1011, Unknown=0, NotChecked=0, Total=1406 [2024-11-18 10:24:07,771 INFO L432 NwaCegarLoop]: 34 mSDtfsCounter, 3828 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 7257 mSolverCounterSat, 1088 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3828 SdHoareTripleChecker+Valid, 193 SdHoareTripleChecker+Invalid, 8345 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1088 IncrementalHoareTripleChecker+Valid, 7257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2024-11-18 10:24:07,771 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3828 Valid, 193 Invalid, 8345 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1088 Valid, 7257 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2024-11-18 10:24:07,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34745 states. [2024-11-18 10:24:07,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34745 to 23265. [2024-11-18 10:24:08,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23265 states, 23264 states have (on average 1.075137551581843) internal successors, (25012), 23264 states have internal predecessors, (25012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:24:08,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23265 states to 23265 states and 25012 transitions. [2024-11-18 10:24:08,025 INFO L78 Accepts]: Start accepts. Automaton has 23265 states and 25012 transitions. Word has length 417 [2024-11-18 10:24:08,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:24:08,026 INFO L471 AbstractCegarLoop]: Abstraction has 23265 states and 25012 transitions. [2024-11-18 10:24:08,026 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 80.83333333333333) internal successors, (970), 11 states have internal predecessors, (970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:24:08,026 INFO L276 IsEmpty]: Start isEmpty. Operand 23265 states and 25012 transitions. [2024-11-18 10:24:08,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 512 [2024-11-18 10:24:08,037 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:24:08,038 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 10:24:08,051 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-18 10:24:08,238 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 10:24:08,239 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:24:08,239 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:24:08,239 INFO L85 PathProgramCache]: Analyzing trace with hash -1101386183, now seen corresponding path program 1 times [2024-11-18 10:24:08,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:24:08,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525845765] [2024-11-18 10:24:08,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:24:08,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:24:08,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:24:08,719 INFO L134 CoverageAnalysis]: Checked inductivity of 801 backedges. 517 proven. 0 refuted. 0 times theorem prover too weak. 284 trivial. 0 not checked. [2024-11-18 10:24:08,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:24:08,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525845765] [2024-11-18 10:24:08,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1525845765] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:24:08,719 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:24:08,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 10:24:08,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442982488] [2024-11-18 10:24:08,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:24:08,720 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 10:24:08,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:24:08,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 10:24:08,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:24:08,721 INFO L87 Difference]: Start difference. First operand 23265 states and 25012 transitions. Second operand has 3 states, 3 states have (on average 103.33333333333333) internal successors, (310), 3 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:24:09,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:24:09,340 INFO L93 Difference]: Finished difference Result 45063 states and 48488 transitions. [2024-11-18 10:24:09,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 10:24:09,341 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 103.33333333333333) internal successors, (310), 3 states have internal predecessors, (310), 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 511 [2024-11-18 10:24:09,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:24:09,363 INFO L225 Difference]: With dead ends: 45063 [2024-11-18 10:24:09,364 INFO L226 Difference]: Without dead ends: 23642 [2024-11-18 10:24:09,379 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:24:09,380 INFO L432 NwaCegarLoop]: 138 mSDtfsCounter, 66 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 510 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 158 SdHoareTripleChecker+Invalid, 545 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 510 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-18 10:24:09,380 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 158 Invalid, 545 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 510 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-18 10:24:09,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23642 states. [2024-11-18 10:24:09,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23642 to 22897. [2024-11-18 10:24:09,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22897 states, 22896 states have (on average 1.0722396925227113) internal successors, (24550), 22896 states have internal predecessors, (24550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:24:09,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22897 states to 22897 states and 24550 transitions. [2024-11-18 10:24:09,662 INFO L78 Accepts]: Start accepts. Automaton has 22897 states and 24550 transitions. Word has length 511 [2024-11-18 10:24:09,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:24:09,662 INFO L471 AbstractCegarLoop]: Abstraction has 22897 states and 24550 transitions. [2024-11-18 10:24:09,662 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 103.33333333333333) internal successors, (310), 3 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:24:09,662 INFO L276 IsEmpty]: Start isEmpty. Operand 22897 states and 24550 transitions. [2024-11-18 10:24:09,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 513 [2024-11-18 10:24:09,670 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:24:09,670 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 10:24:09,671 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-18 10:24:09,671 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:24:09,671 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:24:09,671 INFO L85 PathProgramCache]: Analyzing trace with hash 1677270036, now seen corresponding path program 1 times [2024-11-18 10:24:09,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:24:09,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811029796] [2024-11-18 10:24:09,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:24:09,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:24:09,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:24:10,209 INFO L134 CoverageAnalysis]: Checked inductivity of 801 backedges. 514 proven. 3 refuted. 0 times theorem prover too weak. 284 trivial. 0 not checked. [2024-11-18 10:24:10,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:24:10,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811029796] [2024-11-18 10:24:10,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1811029796] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 10:24:10,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1463273743] [2024-11-18 10:24:10,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:24:10,210 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 10:24:10,210 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 10:24:10,212 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 10:24:10,214 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-18 10:24:10,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:24:10,362 INFO L255 TraceCheckSpWp]: Trace formula consists of 675 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-18 10:24:10,365 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 10:24:10,614 INFO L134 CoverageAnalysis]: Checked inductivity of 801 backedges. 517 proven. 0 refuted. 0 times theorem prover too weak. 284 trivial. 0 not checked. [2024-11-18 10:24:10,614 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 10:24:10,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1463273743] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:24:10,614 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 10:24:10,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2024-11-18 10:24:10,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130638788] [2024-11-18 10:24:10,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:24:10,615 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 10:24:10,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:24:10,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 10:24:10,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-11-18 10:24:10,616 INFO L87 Difference]: Start difference. First operand 22897 states and 24550 transitions. Second operand has 4 states, 4 states have (on average 77.75) internal successors, (311), 4 states have internal predecessors, (311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:24:11,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:24:11,502 INFO L93 Difference]: Finished difference Result 46335 states and 49686 transitions. [2024-11-18 10:24:11,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 10:24:11,503 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 77.75) internal successors, (311), 4 states have internal predecessors, (311), 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 512 [2024-11-18 10:24:11,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:24:11,523 INFO L225 Difference]: With dead ends: 46335 [2024-11-18 10:24:11,523 INFO L226 Difference]: Without dead ends: 23624 [2024-11-18 10:24:11,531 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 516 GetRequests, 510 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-11-18 10:24:11,532 INFO L432 NwaCegarLoop]: 114 mSDtfsCounter, 258 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 1001 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 258 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 1057 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 1001 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-18 10:24:11,532 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [258 Valid, 156 Invalid, 1057 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 1001 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-18 10:24:11,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23624 states. [2024-11-18 10:24:11,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23624 to 21411. [2024-11-18 10:24:11,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21411 states, 21410 states have (on average 1.0685660906118637) internal successors, (22878), 21410 states have internal predecessors, (22878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:24:11,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21411 states to 21411 states and 22878 transitions. [2024-11-18 10:24:11,708 INFO L78 Accepts]: Start accepts. Automaton has 21411 states and 22878 transitions. Word has length 512 [2024-11-18 10:24:11,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:24:11,708 INFO L471 AbstractCegarLoop]: Abstraction has 21411 states and 22878 transitions. [2024-11-18 10:24:11,708 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 77.75) internal successors, (311), 4 states have internal predecessors, (311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:24:11,709 INFO L276 IsEmpty]: Start isEmpty. Operand 21411 states and 22878 transitions. [2024-11-18 10:24:11,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 540 [2024-11-18 10:24:11,719 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:24:11,719 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 10:24:11,732 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-18 10:24:11,920 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,SelfDestructingSolverStorable21 [2024-11-18 10:24:11,920 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:24:11,920 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:24:11,921 INFO L85 PathProgramCache]: Analyzing trace with hash -1808437552, now seen corresponding path program 1 times [2024-11-18 10:24:11,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:24:11,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227650076] [2024-11-18 10:24:11,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:24:11,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:24:11,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:24:13,501 INFO L134 CoverageAnalysis]: Checked inductivity of 868 backedges. 609 proven. 259 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 10:24:13,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:24:13,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227650076] [2024-11-18 10:24:13,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [227650076] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 10:24:13,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1299046013] [2024-11-18 10:24:13,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:24:13,503 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 10:24:13,503 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 10:24:13,504 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) [2024-11-18 10:24:13,506 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-18 10:24:13,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:24:13,675 INFO L255 TraceCheckSpWp]: Trace formula consists of 702 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-18 10:24:13,679 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 10:24:13,783 INFO L134 CoverageAnalysis]: Checked inductivity of 868 backedges. 696 proven. 0 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2024-11-18 10:24:13,783 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 10:24:13,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1299046013] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:24:13,783 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 10:24:13,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 10 [2024-11-18 10:24:13,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355966836] [2024-11-18 10:24:13,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:24:13,784 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 10:24:13,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:24:13,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 10:24:13,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-11-18 10:24:13,785 INFO L87 Difference]: Start difference. First operand 21411 states and 22878 transitions. Second operand has 3 states, 3 states have (on average 123.0) internal successors, (369), 3 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:24:14,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:24:14,336 INFO L93 Difference]: Finished difference Result 43197 states and 46139 transitions. [2024-11-18 10:24:14,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 10:24:14,337 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 123.0) internal successors, (369), 3 states have internal predecessors, (369), 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 539 [2024-11-18 10:24:14,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:24:14,361 INFO L225 Difference]: With dead ends: 43197 [2024-11-18 10:24:14,361 INFO L226 Difference]: Without dead ends: 23446 [2024-11-18 10:24:14,373 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 547 GetRequests, 539 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-11-18 10:24:14,373 INFO L432 NwaCegarLoop]: 318 mSDtfsCounter, 91 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 492 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 338 SdHoareTripleChecker+Invalid, 529 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 492 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-18 10:24:14,374 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 338 Invalid, 529 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 492 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-18 10:24:14,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23446 states. [2024-11-18 10:24:14,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23446 to 21043. [2024-11-18 10:24:14,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21043 states, 21042 states have (on average 1.068814751449482) internal successors, (22490), 21042 states have internal predecessors, (22490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:24:14,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21043 states to 21043 states and 22490 transitions. [2024-11-18 10:24:14,587 INFO L78 Accepts]: Start accepts. Automaton has 21043 states and 22490 transitions. Word has length 539 [2024-11-18 10:24:14,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:24:14,588 INFO L471 AbstractCegarLoop]: Abstraction has 21043 states and 22490 transitions. [2024-11-18 10:24:14,588 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 123.0) internal successors, (369), 3 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:24:14,588 INFO L276 IsEmpty]: Start isEmpty. Operand 21043 states and 22490 transitions. [2024-11-18 10:24:14,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 573 [2024-11-18 10:24:14,603 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:24:14,603 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 10:24:14,621 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-18 10:24:14,803 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 10:24:14,804 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:24:14,805 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:24:14,805 INFO L85 PathProgramCache]: Analyzing trace with hash 27903080, now seen corresponding path program 1 times [2024-11-18 10:24:14,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:24:14,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767560834] [2024-11-18 10:24:14,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:24:14,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:24:14,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:24:15,371 INFO L134 CoverageAnalysis]: Checked inductivity of 845 backedges. 191 proven. 406 refuted. 0 times theorem prover too weak. 248 trivial. 0 not checked. [2024-11-18 10:24:15,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:24:15,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767560834] [2024-11-18 10:24:15,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1767560834] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 10:24:15,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [797761084] [2024-11-18 10:24:15,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:24:15,372 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 10:24:15,372 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 10:24:15,374 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 10:24:15,375 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-18 10:24:15,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:24:15,577 INFO L255 TraceCheckSpWp]: Trace formula consists of 733 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-18 10:24:15,583 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 10:24:16,268 INFO L134 CoverageAnalysis]: Checked inductivity of 845 backedges. 241 proven. 454 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2024-11-18 10:24:16,269 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 10:24:17,842 INFO L134 CoverageAnalysis]: Checked inductivity of 845 backedges. 191 proven. 406 refuted. 0 times theorem prover too weak. 248 trivial. 0 not checked. [2024-11-18 10:24:17,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [797761084] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 10:24:17,842 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 10:24:17,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 4] total 9 [2024-11-18 10:24:17,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309099086] [2024-11-18 10:24:17,843 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 10:24:17,844 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-18 10:24:17,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:24:17,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-18 10:24:17,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=49, Unknown=0, NotChecked=0, Total=90 [2024-11-18 10:24:17,845 INFO L87 Difference]: Start difference. First operand 21043 states and 22490 transitions. Second operand has 10 states, 10 states have (on average 80.6) internal successors, (806), 9 states have internal predecessors, (806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:24:20,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:24:20,154 INFO L93 Difference]: Finished difference Result 38746 states and 41220 transitions. [2024-11-18 10:24:20,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-18 10:24:20,155 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 80.6) internal successors, (806), 9 states have internal predecessors, (806), 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 572 [2024-11-18 10:24:20,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:24:20,195 INFO L225 Difference]: With dead ends: 38746 [2024-11-18 10:24:20,195 INFO L226 Difference]: Without dead ends: 38744 [2024-11-18 10:24:20,206 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1146 GetRequests, 1138 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=49, Unknown=0, NotChecked=0, Total=90 [2024-11-18 10:24:20,207 INFO L432 NwaCegarLoop]: 39 mSDtfsCounter, 839 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 3617 mSolverCounterSat, 279 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 839 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 3896 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 279 IncrementalHoareTripleChecker+Valid, 3617 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-11-18 10:24:20,207 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [839 Valid, 151 Invalid, 3896 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [279 Valid, 3617 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-11-18 10:24:20,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38744 states. [2024-11-18 10:24:20,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38744 to 13667. [2024-11-18 10:24:20,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13667 states, 13666 states have (on average 1.0715644665593445) internal successors, (14644), 13666 states have internal predecessors, (14644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:24:20,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13667 states to 13667 states and 14644 transitions. [2024-11-18 10:24:20,471 INFO L78 Accepts]: Start accepts. Automaton has 13667 states and 14644 transitions. Word has length 572 [2024-11-18 10:24:20,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:24:20,471 INFO L471 AbstractCegarLoop]: Abstraction has 13667 states and 14644 transitions. [2024-11-18 10:24:20,471 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 80.6) internal successors, (806), 9 states have internal predecessors, (806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:24:20,471 INFO L276 IsEmpty]: Start isEmpty. Operand 13667 states and 14644 transitions. [2024-11-18 10:24:20,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 587 [2024-11-18 10:24:20,481 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:24:20,481 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 10:24:20,499 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-18 10:24:20,682 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-11-18 10:24:20,682 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:24:20,683 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:24:20,683 INFO L85 PathProgramCache]: Analyzing trace with hash -1930042227, now seen corresponding path program 1 times [2024-11-18 10:24:20,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:24:20,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403374616] [2024-11-18 10:24:20,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:24:20,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:24:20,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:24:21,122 INFO L134 CoverageAnalysis]: Checked inductivity of 1175 backedges. 902 proven. 0 refuted. 0 times theorem prover too weak. 273 trivial. 0 not checked. [2024-11-18 10:24:21,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:24:21,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403374616] [2024-11-18 10:24:21,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1403374616] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:24:21,123 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:24:21,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 10:24:21,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742082645] [2024-11-18 10:24:21,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:24:21,124 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 10:24:21,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:24:21,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 10:24:21,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-18 10:24:21,125 INFO L87 Difference]: Start difference. First operand 13667 states and 14644 transitions. Second operand has 4 states, 4 states have (on average 91.0) internal successors, (364), 3 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:24:21,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:24:21,981 INFO L93 Difference]: Finished difference Result 30474 states and 32582 transitions. [2024-11-18 10:24:21,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 10:24:21,982 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 91.0) internal successors, (364), 3 states have internal predecessors, (364), 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 586 [2024-11-18 10:24:21,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:24:21,996 INFO L225 Difference]: With dead ends: 30474 [2024-11-18 10:24:21,996 INFO L226 Difference]: Without dead ends: 16071 [2024-11-18 10:24:22,005 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-18 10:24:22,005 INFO L432 NwaCegarLoop]: 39 mSDtfsCounter, 185 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 1100 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 185 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 1186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 1100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-18 10:24:22,005 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [185 Valid, 69 Invalid, 1186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 1100 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-18 10:24:22,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16071 states. [2024-11-18 10:24:22,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16071 to 13851. [2024-11-18 10:24:22,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13851 states, 13850 states have (on average 1.0699638989169675) internal successors, (14819), 13850 states have internal predecessors, (14819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:24:22,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13851 states to 13851 states and 14819 transitions. [2024-11-18 10:24:22,136 INFO L78 Accepts]: Start accepts. Automaton has 13851 states and 14819 transitions. Word has length 586 [2024-11-18 10:24:22,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:24:22,137 INFO L471 AbstractCegarLoop]: Abstraction has 13851 states and 14819 transitions. [2024-11-18 10:24:22,137 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 91.0) internal successors, (364), 3 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:24:22,137 INFO L276 IsEmpty]: Start isEmpty. Operand 13851 states and 14819 transitions. [2024-11-18 10:24:22,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 705 [2024-11-18 10:24:22,149 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:24:22,149 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 10:24:22,150 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-11-18 10:24:22,150 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:24:22,150 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:24:22,151 INFO L85 PathProgramCache]: Analyzing trace with hash 1100874474, now seen corresponding path program 1 times [2024-11-18 10:24:22,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:24:22,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [829887678] [2024-11-18 10:24:22,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:24:22,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:24:22,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:24:22,704 INFO L134 CoverageAnalysis]: Checked inductivity of 1252 backedges. 890 proven. 0 refuted. 0 times theorem prover too weak. 362 trivial. 0 not checked. [2024-11-18 10:24:22,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:24:22,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [829887678] [2024-11-18 10:24:22,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [829887678] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:24:22,705 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:24:22,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 10:24:22,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143265199] [2024-11-18 10:24:22,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:24:22,706 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 10:24:22,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:24:22,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 10:24:22,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:24:22,707 INFO L87 Difference]: Start difference. First operand 13851 states and 14819 transitions. Second operand has 3 states, 3 states have (on average 139.0) internal successors, (417), 3 states have internal predecessors, (417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:24:23,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:24:23,290 INFO L93 Difference]: Finished difference Result 28624 states and 30520 transitions. [2024-11-18 10:24:23,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 10:24:23,291 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 139.0) internal successors, (417), 3 states have internal predecessors, (417), 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 704 [2024-11-18 10:24:23,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:24:23,303 INFO L225 Difference]: With dead ends: 28624 [2024-11-18 10:24:23,303 INFO L226 Difference]: Without dead ends: 14775 [2024-11-18 10:24:23,311 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:24:23,311 INFO L432 NwaCegarLoop]: 58 mSDtfsCounter, 123 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 505 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 611 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 505 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-18 10:24:23,312 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [123 Valid, 63 Invalid, 611 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 505 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-18 10:24:23,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14775 states. [2024-11-18 10:24:23,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14775 to 12747. [2024-11-18 10:24:23,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12747 states, 12746 states have (on average 1.0648831005805743) internal successors, (13573), 12746 states have internal predecessors, (13573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:24:23,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12747 states to 12747 states and 13573 transitions. [2024-11-18 10:24:23,432 INFO L78 Accepts]: Start accepts. Automaton has 12747 states and 13573 transitions. Word has length 704 [2024-11-18 10:24:23,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:24:23,433 INFO L471 AbstractCegarLoop]: Abstraction has 12747 states and 13573 transitions. [2024-11-18 10:24:23,433 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 139.0) internal successors, (417), 3 states have internal predecessors, (417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:24:23,433 INFO L276 IsEmpty]: Start isEmpty. Operand 12747 states and 13573 transitions. [2024-11-18 10:24:23,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 836 [2024-11-18 10:24:23,442 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:24:23,442 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 10:24:23,442 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-11-18 10:24:23,443 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:24:23,443 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:24:23,443 INFO L85 PathProgramCache]: Analyzing trace with hash -1565644488, now seen corresponding path program 1 times [2024-11-18 10:24:23,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:24:23,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47769440] [2024-11-18 10:24:23,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:24:23,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:24:23,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:24:24,538 INFO L134 CoverageAnalysis]: Checked inductivity of 1833 backedges. 1314 proven. 73 refuted. 0 times theorem prover too weak. 446 trivial. 0 not checked. [2024-11-18 10:24:24,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:24:24,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47769440] [2024-11-18 10:24:24,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [47769440] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 10:24:24,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2002775020] [2024-11-18 10:24:24,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:24:24,542 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 10:24:24,542 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 10:24:24,543 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 10:24:24,544 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-18 10:24:24,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:24:24,833 INFO L255 TraceCheckSpWp]: Trace formula consists of 1043 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-18 10:24:24,846 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 10:24:26,468 INFO L134 CoverageAnalysis]: Checked inductivity of 1833 backedges. 975 proven. 496 refuted. 0 times theorem prover too weak. 362 trivial. 0 not checked. [2024-11-18 10:24:26,468 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 10:24:28,506 INFO L134 CoverageAnalysis]: Checked inductivity of 1833 backedges. 975 proven. 496 refuted. 0 times theorem prover too weak. 362 trivial. 0 not checked. [2024-11-18 10:24:28,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2002775020] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 10:24:28,506 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 10:24:28,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 6] total 13 [2024-11-18 10:24:28,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707624069] [2024-11-18 10:24:28,507 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 10:24:28,508 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-18 10:24:28,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:24:28,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-18 10:24:28,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2024-11-18 10:24:28,510 INFO L87 Difference]: Start difference. First operand 12747 states and 13573 transitions. Second operand has 13 states, 13 states have (on average 98.53846153846153) internal successors, (1281), 13 states have internal predecessors, (1281), 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)