./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_palu.c --full-output --architecture 64bit -------------------------------------------------------------------------------- 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/hardware-verification-bv/btor2c-lazyMod.vis_arrays_palu.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-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 64bit --witnessprinter.graph.data.programhash 7bfb32b49701ea1484553c69a9c6c976094bd0d4ca4d5ea9d4d30cdc2f2571dd --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-18 18:18:15,069 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-18 18:18:15,124 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2024-11-18 18:18:15,129 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-18 18:18:15,131 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-18 18:18:15,157 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-18 18:18:15,158 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-18 18:18:15,158 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-18 18:18:15,159 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-18 18:18:15,162 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-18 18:18:15,162 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-18 18:18:15,162 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-18 18:18:15,163 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-18 18:18:15,163 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-18 18:18:15,163 INFO L153 SettingsManager]: * Use SBE=true [2024-11-18 18:18:15,163 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-18 18:18:15,164 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-18 18:18:15,164 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-18 18:18:15,164 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-18 18:18:15,164 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-18 18:18:15,165 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-18 18:18:15,165 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-18 18:18:15,165 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-18 18:18:15,166 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-18 18:18:15,166 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-18 18:18:15,166 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-18 18:18:15,166 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-18 18:18:15,167 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-18 18:18:15,167 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-18 18:18:15,167 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 18:18:15,168 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-18 18:18:15,168 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-18 18:18:15,168 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-18 18:18:15,168 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-18 18:18:15,169 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-18 18:18:15,169 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-18 18:18:15,169 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-18 18:18:15,169 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-18 18:18:15,170 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-18 18:18:15,170 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7bfb32b49701ea1484553c69a9c6c976094bd0d4ca4d5ea9d4d30cdc2f2571dd [2024-11-18 18:18:15,414 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-18 18:18:15,437 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-18 18:18:15,442 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-18 18:18:15,443 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-18 18:18:15,443 INFO L274 PluginConnector]: CDTParser initialized [2024-11-18 18:18:15,445 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_palu.c [2024-11-18 18:18:16,926 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-18 18:18:17,185 INFO L384 CDTParser]: Found 1 translation units. [2024-11-18 18:18:17,187 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_palu.c [2024-11-18 18:18:17,201 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b07a26b0d/bda6b5d228b942b6a4eee5c758a8b80e/FLAGdadf8a8a7 [2024-11-18 18:18:17,221 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b07a26b0d/bda6b5d228b942b6a4eee5c758a8b80e [2024-11-18 18:18:17,223 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-18 18:18:17,225 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-18 18:18:17,230 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-18 18:18:17,231 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-18 18:18:17,237 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-18 18:18:17,238 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 06:18:17" (1/1) ... [2024-11-18 18:18:17,240 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5018032f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:18:17, skipping insertion in model container [2024-11-18 18:18:17,242 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 06:18:17" (1/1) ... [2024-11-18 18:18:17,279 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-18 18:18:17,416 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/hardware-verification-bv/btor2c-lazyMod.vis_arrays_palu.c[1255,1268] [2024-11-18 18:18:17,586 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 18:18:17,598 INFO L200 MainTranslator]: Completed pre-run [2024-11-18 18:18:17,608 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/hardware-verification-bv/btor2c-lazyMod.vis_arrays_palu.c[1255,1268] [2024-11-18 18:18:17,789 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 18:18:17,819 INFO L204 MainTranslator]: Completed translation [2024-11-18 18:18:17,823 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:18:17 WrapperNode [2024-11-18 18:18:17,823 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-18 18:18:17,824 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-18 18:18:17,824 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-18 18:18:17,824 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-18 18:18:17,833 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:18:17" (1/1) ... [2024-11-18 18:18:17,874 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:18:17" (1/1) ... [2024-11-18 18:18:18,109 INFO L138 Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1244 [2024-11-18 18:18:18,113 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-18 18:18:18,114 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-18 18:18:18,114 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-18 18:18:18,114 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-18 18:18:18,127 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:18:17" (1/1) ... [2024-11-18 18:18:18,127 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:18:17" (1/1) ... [2024-11-18 18:18:18,190 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:18:17" (1/1) ... [2024-11-18 18:18:18,249 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 18:18:18,250 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:18:17" (1/1) ... [2024-11-18 18:18:18,250 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:18:17" (1/1) ... [2024-11-18 18:18:18,274 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:18:17" (1/1) ... [2024-11-18 18:18:18,281 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:18:17" (1/1) ... [2024-11-18 18:18:18,294 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:18:17" (1/1) ... [2024-11-18 18:18:18,304 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:18:17" (1/1) ... [2024-11-18 18:18:18,323 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-18 18:18:18,324 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-18 18:18:18,324 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-18 18:18:18,324 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-18 18:18:18,329 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:18:17" (1/1) ... [2024-11-18 18:18:18,335 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 18:18:18,344 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 18:18:18,359 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 18:18:18,365 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 18:18:18,399 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-18 18:18:18,399 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-18 18:18:18,399 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-18 18:18:18,399 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-18 18:18:18,546 INFO L238 CfgBuilder]: Building ICFG [2024-11-18 18:18:18,548 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-18 18:18:20,028 INFO L? ?]: Removed 682 outVars from TransFormulas that were not future-live. [2024-11-18 18:18:20,028 INFO L287 CfgBuilder]: Performing block encoding [2024-11-18 18:18:20,056 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-18 18:18:20,056 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-18 18:18:20,057 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 06:18:20 BoogieIcfgContainer [2024-11-18 18:18:20,057 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-18 18:18:20,060 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-18 18:18:20,061 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-18 18:18:20,064 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-18 18:18:20,064 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 06:18:17" (1/3) ... [2024-11-18 18:18:20,065 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38af4097 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 06:18:20, skipping insertion in model container [2024-11-18 18:18:20,065 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:18:17" (2/3) ... [2024-11-18 18:18:20,065 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38af4097 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 06:18:20, skipping insertion in model container [2024-11-18 18:18:20,065 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 06:18:20" (3/3) ... [2024-11-18 18:18:20,066 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.vis_arrays_palu.c [2024-11-18 18:18:20,082 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-18 18:18:20,083 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-18 18:18:20,148 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-18 18:18:20,154 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;@3d00f08f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-18 18:18:20,155 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-18 18:18:20,159 INFO L276 IsEmpty]: Start isEmpty. Operand has 362 states, 360 states have (on average 1.4972222222222222) internal successors, (539), 361 states have internal predecessors, (539), 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 18:18:20,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-18 18:18:20,166 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 18:18:20,167 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, 1] [2024-11-18 18:18:20,167 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 18:18:20,171 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 18:18:20,172 INFO L85 PathProgramCache]: Analyzing trace with hash 596137605, now seen corresponding path program 1 times [2024-11-18 18:18:20,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 18:18:20,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209161947] [2024-11-18 18:18:20,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 18:18:20,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 18:18:20,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 18:18:20,962 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 18:18:20,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 18:18:20,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1209161947] [2024-11-18 18:18:20,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1209161947] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 18:18:20,969 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 18:18:20,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 18:18:20,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252683463] [2024-11-18 18:18:20,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 18:18:20,984 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 18:18:20,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 18:18:21,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 18:18:21,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 18:18:21,031 INFO L87 Difference]: Start difference. First operand has 362 states, 360 states have (on average 1.4972222222222222) internal successors, (539), 361 states have internal predecessors, (539), 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 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 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 18:18:21,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 18:18:21,125 INFO L93 Difference]: Finished difference Result 681 states and 1017 transitions. [2024-11-18 18:18:21,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 18:18:21,131 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 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 51 [2024-11-18 18:18:21,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 18:18:21,143 INFO L225 Difference]: With dead ends: 681 [2024-11-18 18:18:21,143 INFO L226 Difference]: Without dead ends: 361 [2024-11-18 18:18:21,147 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 18:18:21,151 INFO L432 NwaCegarLoop]: 533 mSDtfsCounter, 0 mSDsluCounter, 1060 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1593 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 18:18:21,152 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1593 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 18:18:21,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 361 states. [2024-11-18 18:18:21,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 361 to 361. [2024-11-18 18:18:21,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 361 states, 360 states have (on average 1.4916666666666667) internal successors, (537), 360 states have internal predecessors, (537), 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 18:18:21,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 361 states to 361 states and 537 transitions. [2024-11-18 18:18:21,209 INFO L78 Accepts]: Start accepts. Automaton has 361 states and 537 transitions. Word has length 51 [2024-11-18 18:18:21,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 18:18:21,210 INFO L471 AbstractCegarLoop]: Abstraction has 361 states and 537 transitions. [2024-11-18 18:18:21,210 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 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 18:18:21,211 INFO L276 IsEmpty]: Start isEmpty. Operand 361 states and 537 transitions. [2024-11-18 18:18:21,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-11-18 18:18:21,212 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 18:18:21,212 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, 1, 1] [2024-11-18 18:18:21,212 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-18 18:18:21,212 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 18:18:21,213 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 18:18:21,213 INFO L85 PathProgramCache]: Analyzing trace with hash 1302092023, now seen corresponding path program 1 times [2024-11-18 18:18:21,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 18:18:21,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875605813] [2024-11-18 18:18:21,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 18:18:21,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 18:18:21,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 18:18:21,483 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 18:18:21,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 18:18:21,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875605813] [2024-11-18 18:18:21,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [875605813] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 18:18:21,484 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 18:18:21,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 18:18:21,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588951881] [2024-11-18 18:18:21,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 18:18:21,486 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 18:18:21,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 18:18:21,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 18:18:21,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 18:18:21,491 INFO L87 Difference]: Start difference. First operand 361 states and 537 transitions. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 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 18:18:21,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 18:18:21,543 INFO L93 Difference]: Finished difference Result 682 states and 1015 transitions. [2024-11-18 18:18:21,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 18:18:21,544 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 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 52 [2024-11-18 18:18:21,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 18:18:21,547 INFO L225 Difference]: With dead ends: 682 [2024-11-18 18:18:21,547 INFO L226 Difference]: Without dead ends: 363 [2024-11-18 18:18:21,548 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 18:18:21,551 INFO L432 NwaCegarLoop]: 533 mSDtfsCounter, 0 mSDsluCounter, 1056 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1589 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 18:18:21,552 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1589 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 18:18:21,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363 states. [2024-11-18 18:18:21,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363 to 363. [2024-11-18 18:18:21,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 363 states, 362 states have (on average 1.488950276243094) internal successors, (539), 362 states have internal predecessors, (539), 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 18:18:21,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 539 transitions. [2024-11-18 18:18:21,576 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 539 transitions. Word has length 52 [2024-11-18 18:18:21,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 18:18:21,577 INFO L471 AbstractCegarLoop]: Abstraction has 363 states and 539 transitions. [2024-11-18 18:18:21,577 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 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 18:18:21,577 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 539 transitions. [2024-11-18 18:18:21,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-11-18 18:18:21,580 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 18:18:21,580 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, 1, 1, 1] [2024-11-18 18:18:21,581 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-18 18:18:21,581 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 18:18:21,582 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 18:18:21,583 INFO L85 PathProgramCache]: Analyzing trace with hash 612181406, now seen corresponding path program 1 times [2024-11-18 18:18:21,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 18:18:21,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55909614] [2024-11-18 18:18:21,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 18:18:21,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 18:18:21,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 18:18:21,919 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 18:18:21,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 18:18:21,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55909614] [2024-11-18 18:18:21,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [55909614] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 18:18:21,922 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 18:18:21,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 18:18:21,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246223727] [2024-11-18 18:18:21,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 18:18:21,923 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 18:18:21,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 18:18:21,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 18:18:21,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 18:18:21,923 INFO L87 Difference]: Start difference. First operand 363 states and 539 transitions. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 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 18:18:21,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 18:18:21,953 INFO L93 Difference]: Finished difference Result 686 states and 1019 transitions. [2024-11-18 18:18:21,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 18:18:21,953 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 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 53 [2024-11-18 18:18:21,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 18:18:21,955 INFO L225 Difference]: With dead ends: 686 [2024-11-18 18:18:21,955 INFO L226 Difference]: Without dead ends: 365 [2024-11-18 18:18:21,957 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 18:18:21,958 INFO L432 NwaCegarLoop]: 533 mSDtfsCounter, 0 mSDsluCounter, 1056 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1589 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 18:18:21,960 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1589 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 18:18:21,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 365 states. [2024-11-18 18:18:21,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 365 to 365. [2024-11-18 18:18:21,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 365 states, 364 states have (on average 1.4862637362637363) internal successors, (541), 364 states have internal predecessors, (541), 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 18:18:21,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 541 transitions. [2024-11-18 18:18:21,977 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 541 transitions. Word has length 53 [2024-11-18 18:18:21,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 18:18:21,977 INFO L471 AbstractCegarLoop]: Abstraction has 365 states and 541 transitions. [2024-11-18 18:18:21,977 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 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 18:18:21,977 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 541 transitions. [2024-11-18 18:18:21,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-11-18 18:18:21,978 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 18:18:21,978 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, 1, 1, 1, 1] [2024-11-18 18:18:21,978 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-18 18:18:21,979 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 18:18:21,979 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 18:18:21,979 INFO L85 PathProgramCache]: Analyzing trace with hash -1588325794, now seen corresponding path program 1 times [2024-11-18 18:18:21,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 18:18:21,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [383148541] [2024-11-18 18:18:21,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 18:18:21,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 18:18:22,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 18:18:22,260 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 18:18:22,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 18:18:22,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [383148541] [2024-11-18 18:18:22,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [383148541] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 18:18:22,265 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 18:18:22,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 18:18:22,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356551377] [2024-11-18 18:18:22,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 18:18:22,266 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 18:18:22,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 18:18:22,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 18:18:22,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-18 18:18:22,267 INFO L87 Difference]: Start difference. First operand 365 states and 541 transitions. Second operand has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 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 18:18:22,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 18:18:22,318 INFO L93 Difference]: Finished difference Result 718 states and 1065 transitions. [2024-11-18 18:18:22,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 18:18:22,319 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 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 54 [2024-11-18 18:18:22,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 18:18:22,321 INFO L225 Difference]: With dead ends: 718 [2024-11-18 18:18:22,321 INFO L226 Difference]: Without dead ends: 395 [2024-11-18 18:18:22,324 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-18 18:18:22,325 INFO L432 NwaCegarLoop]: 532 mSDtfsCounter, 28 mSDsluCounter, 1584 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 2116 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 18:18:22,327 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 2116 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 18:18:22,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 395 states. [2024-11-18 18:18:22,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 395 to 395. [2024-11-18 18:18:22,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 395 states, 394 states have (on average 1.484771573604061) internal successors, (585), 394 states have internal predecessors, (585), 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 18:18:22,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 585 transitions. [2024-11-18 18:18:22,338 INFO L78 Accepts]: Start accepts. Automaton has 395 states and 585 transitions. Word has length 54 [2024-11-18 18:18:22,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 18:18:22,338 INFO L471 AbstractCegarLoop]: Abstraction has 395 states and 585 transitions. [2024-11-18 18:18:22,338 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 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 18:18:22,338 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 585 transitions. [2024-11-18 18:18:22,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-11-18 18:18:22,339 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 18:18:22,340 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, 1, 1, 1, 1, 1] [2024-11-18 18:18:22,340 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-18 18:18:22,340 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 18:18:22,340 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 18:18:22,340 INFO L85 PathProgramCache]: Analyzing trace with hash 111431526, now seen corresponding path program 1 times [2024-11-18 18:18:22,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 18:18:22,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615785676] [2024-11-18 18:18:22,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 18:18:22,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 18:18:22,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 18:18:22,881 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 18:18:22,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 18:18:22,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615785676] [2024-11-18 18:18:22,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [615785676] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 18:18:22,882 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 18:18:22,882 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-18 18:18:22,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621188570] [2024-11-18 18:18:22,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 18:18:22,882 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-18 18:18:22,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 18:18:22,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-18 18:18:22,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-18 18:18:22,883 INFO L87 Difference]: Start difference. First operand 395 states and 585 transitions. Second operand has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 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 18:18:22,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 18:18:22,993 INFO L93 Difference]: Finished difference Result 758 states and 1123 transitions. [2024-11-18 18:18:22,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-18 18:18:22,994 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 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 55 [2024-11-18 18:18:22,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 18:18:22,998 INFO L225 Difference]: With dead ends: 758 [2024-11-18 18:18:22,998 INFO L226 Difference]: Without dead ends: 405 [2024-11-18 18:18:23,000 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-11-18 18:18:23,000 INFO L432 NwaCegarLoop]: 526 mSDtfsCounter, 501 mSDsluCounter, 2088 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 501 SdHoareTripleChecker+Valid, 2614 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 18:18:23,001 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [501 Valid, 2614 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 18:18:23,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 405 states. [2024-11-18 18:18:23,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 405 to 401. [2024-11-18 18:18:23,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 401 states, 400 states have (on average 1.4825) internal successors, (593), 400 states have internal predecessors, (593), 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 18:18:23,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 401 states to 401 states and 593 transitions. [2024-11-18 18:18:23,011 INFO L78 Accepts]: Start accepts. Automaton has 401 states and 593 transitions. Word has length 55 [2024-11-18 18:18:23,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 18:18:23,011 INFO L471 AbstractCegarLoop]: Abstraction has 401 states and 593 transitions. [2024-11-18 18:18:23,011 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 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 18:18:23,011 INFO L276 IsEmpty]: Start isEmpty. Operand 401 states and 593 transitions. [2024-11-18 18:18:23,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-18 18:18:23,015 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 18:18:23,015 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, 1, 1, 1, 1, 1, 1] [2024-11-18 18:18:23,015 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-18 18:18:23,016 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 18:18:23,016 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 18:18:23,016 INFO L85 PathProgramCache]: Analyzing trace with hash 273603503, now seen corresponding path program 1 times [2024-11-18 18:18:23,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 18:18:23,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213771406] [2024-11-18 18:18:23,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 18:18:23,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 18:18:23,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 18:18:23,457 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 18:18:23,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 18:18:23,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213771406] [2024-11-18 18:18:23,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1213771406] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 18:18:23,459 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 18:18:23,460 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-18 18:18:23,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422260956] [2024-11-18 18:18:23,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 18:18:23,460 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-18 18:18:23,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 18:18:23,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-18 18:18:23,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-18 18:18:23,462 INFO L87 Difference]: Start difference. First operand 401 states and 593 transitions. Second operand has 8 states, 8 states have (on average 7.0) internal successors, (56), 8 states have internal predecessors, (56), 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 18:18:23,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 18:18:23,591 INFO L93 Difference]: Finished difference Result 782 states and 1158 transitions. [2024-11-18 18:18:23,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-18 18:18:23,591 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.0) internal successors, (56), 8 states have internal predecessors, (56), 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 56 [2024-11-18 18:18:23,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 18:18:23,595 INFO L225 Difference]: With dead ends: 782 [2024-11-18 18:18:23,596 INFO L226 Difference]: Without dead ends: 423 [2024-11-18 18:18:23,597 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-11-18 18:18:23,599 INFO L432 NwaCegarLoop]: 526 mSDtfsCounter, 515 mSDsluCounter, 2614 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 515 SdHoareTripleChecker+Valid, 3140 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 18:18:23,599 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [515 Valid, 3140 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 18:18:23,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 423 states. [2024-11-18 18:18:23,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 423 to 419. [2024-11-18 18:18:23,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 419 states, 418 states have (on average 1.4760765550239234) internal successors, (617), 418 states have internal predecessors, (617), 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 18:18:23,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 419 states to 419 states and 617 transitions. [2024-11-18 18:18:23,610 INFO L78 Accepts]: Start accepts. Automaton has 419 states and 617 transitions. Word has length 56 [2024-11-18 18:18:23,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 18:18:23,611 INFO L471 AbstractCegarLoop]: Abstraction has 419 states and 617 transitions. [2024-11-18 18:18:23,613 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.0) internal successors, (56), 8 states have internal predecessors, (56), 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 18:18:23,613 INFO L276 IsEmpty]: Start isEmpty. Operand 419 states and 617 transitions. [2024-11-18 18:18:23,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-18 18:18:23,614 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 18:18:23,614 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, 1, 1, 1, 1, 1, 1] [2024-11-18 18:18:23,614 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-18 18:18:23,615 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 18:18:23,615 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 18:18:23,615 INFO L85 PathProgramCache]: Analyzing trace with hash 4551560, now seen corresponding path program 1 times [2024-11-18 18:18:23,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 18:18:23,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120937108] [2024-11-18 18:18:23,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 18:18:23,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 18:18:23,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 18:18:24,049 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 18:18:24,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 18:18:24,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120937108] [2024-11-18 18:18:24,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [120937108] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 18:18:24,050 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 18:18:24,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-18 18:18:24,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022940663] [2024-11-18 18:18:24,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 18:18:24,051 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-18 18:18:24,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 18:18:24,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-18 18:18:24,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-18 18:18:24,052 INFO L87 Difference]: Start difference. First operand 419 states and 617 transitions. Second operand has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 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 18:18:24,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 18:18:24,343 INFO L93 Difference]: Finished difference Result 810 states and 1191 transitions. [2024-11-18 18:18:24,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-18 18:18:24,344 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 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 56 [2024-11-18 18:18:24,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 18:18:24,345 INFO L225 Difference]: With dead ends: 810 [2024-11-18 18:18:24,345 INFO L226 Difference]: Without dead ends: 433 [2024-11-18 18:18:24,346 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-11-18 18:18:24,346 INFO L432 NwaCegarLoop]: 481 mSDtfsCounter, 495 mSDsluCounter, 1904 mSDsCounter, 0 mSdLazyCounter, 316 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 495 SdHoareTripleChecker+Valid, 2385 SdHoareTripleChecker+Invalid, 317 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 316 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 18:18:24,347 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [495 Valid, 2385 Invalid, 317 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 316 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 18:18:24,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 433 states. [2024-11-18 18:18:24,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 433 to 419. [2024-11-18 18:18:24,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 419 states, 418 states have (on average 1.4760765550239234) internal successors, (617), 418 states have internal predecessors, (617), 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 18:18:24,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 419 states to 419 states and 617 transitions. [2024-11-18 18:18:24,355 INFO L78 Accepts]: Start accepts. Automaton has 419 states and 617 transitions. Word has length 56 [2024-11-18 18:18:24,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 18:18:24,355 INFO L471 AbstractCegarLoop]: Abstraction has 419 states and 617 transitions. [2024-11-18 18:18:24,355 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 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 18:18:24,355 INFO L276 IsEmpty]: Start isEmpty. Operand 419 states and 617 transitions. [2024-11-18 18:18:24,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-11-18 18:18:24,356 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 18:18:24,356 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, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 18:18:24,356 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-18 18:18:24,356 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 18:18:24,356 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 18:18:24,357 INFO L85 PathProgramCache]: Analyzing trace with hash 1213928041, now seen corresponding path program 1 times [2024-11-18 18:18:24,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 18:18:24,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096281903] [2024-11-18 18:18:24,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 18:18:24,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 18:18:24,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 18:18:24,869 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 18:18:24,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 18:18:24,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096281903] [2024-11-18 18:18:24,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2096281903] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 18:18:24,870 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 18:18:24,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-18 18:18:24,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531006356] [2024-11-18 18:18:24,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 18:18:24,870 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-18 18:18:24,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 18:18:24,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-18 18:18:24,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-18 18:18:24,871 INFO L87 Difference]: Start difference. First operand 419 states and 617 transitions. Second operand has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 18:18:24,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 18:18:24,945 INFO L93 Difference]: Finished difference Result 804 states and 1184 transitions. [2024-11-18 18:18:24,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-18 18:18:24,946 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2024-11-18 18:18:24,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 18:18:24,947 INFO L225 Difference]: With dead ends: 804 [2024-11-18 18:18:24,947 INFO L226 Difference]: Without dead ends: 427 [2024-11-18 18:18:24,948 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-11-18 18:18:24,948 INFO L432 NwaCegarLoop]: 529 mSDtfsCounter, 528 mSDsluCounter, 1578 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 528 SdHoareTripleChecker+Valid, 2107 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 18:18:24,948 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [528 Valid, 2107 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 18:18:24,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 427 states. [2024-11-18 18:18:24,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 427 to 426. [2024-11-18 18:18:24,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 426 states, 425 states have (on average 1.4752941176470589) internal successors, (627), 425 states have internal predecessors, (627), 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 18:18:24,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 426 states to 426 states and 627 transitions. [2024-11-18 18:18:24,957 INFO L78 Accepts]: Start accepts. Automaton has 426 states and 627 transitions. Word has length 57 [2024-11-18 18:18:24,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 18:18:24,957 INFO L471 AbstractCegarLoop]: Abstraction has 426 states and 627 transitions. [2024-11-18 18:18:24,958 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 18:18:24,958 INFO L276 IsEmpty]: Start isEmpty. Operand 426 states and 627 transitions. [2024-11-18 18:18:24,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-11-18 18:18:24,959 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 18:18:24,959 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, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 18:18:24,959 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-18 18:18:24,959 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 18:18:24,959 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 18:18:24,959 INFO L85 PathProgramCache]: Analyzing trace with hash -1195833884, now seen corresponding path program 1 times [2024-11-18 18:18:24,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 18:18:24,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301438665] [2024-11-18 18:18:24,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 18:18:24,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 18:18:25,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 18:18:25,519 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 18:18:25,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 18:18:25,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [301438665] [2024-11-18 18:18:25,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [301438665] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 18:18:25,520 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 18:18:25,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 18:18:25,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111530587] [2024-11-18 18:18:25,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 18:18:25,521 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 18:18:25,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 18:18:25,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 18:18:25,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 18:18:25,522 INFO L87 Difference]: Start difference. First operand 426 states and 627 transitions. Second operand has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 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 18:18:25,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 18:18:25,597 INFO L93 Difference]: Finished difference Result 964 states and 1413 transitions. [2024-11-18 18:18:25,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 18:18:25,598 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 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 58 [2024-11-18 18:18:25,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 18:18:25,600 INFO L225 Difference]: With dead ends: 964 [2024-11-18 18:18:25,600 INFO L226 Difference]: Without dead ends: 580 [2024-11-18 18:18:25,600 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-18 18:18:25,601 INFO L432 NwaCegarLoop]: 522 mSDtfsCounter, 793 mSDsluCounter, 1038 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 793 SdHoareTripleChecker+Valid, 1560 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 18:18:25,601 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [793 Valid, 1560 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 18:18:25,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 580 states. [2024-11-18 18:18:25,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 580 to 497. [2024-11-18 18:18:25,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 497 states, 496 states have (on average 1.469758064516129) internal successors, (729), 496 states have internal predecessors, (729), 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 18:18:25,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 497 states to 497 states and 729 transitions. [2024-11-18 18:18:25,609 INFO L78 Accepts]: Start accepts. Automaton has 497 states and 729 transitions. Word has length 58 [2024-11-18 18:18:25,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 18:18:25,609 INFO L471 AbstractCegarLoop]: Abstraction has 497 states and 729 transitions. [2024-11-18 18:18:25,610 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 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 18:18:25,610 INFO L276 IsEmpty]: Start isEmpty. Operand 497 states and 729 transitions. [2024-11-18 18:18:25,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-11-18 18:18:25,610 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 18:18:25,610 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, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 18:18:25,610 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-18 18:18:25,611 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 18:18:25,611 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 18:18:25,611 INFO L85 PathProgramCache]: Analyzing trace with hash -2071929649, now seen corresponding path program 1 times [2024-11-18 18:18:25,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 18:18:25,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [489331382] [2024-11-18 18:18:25,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 18:18:25,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 18:18:25,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 18:18:25,991 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 18:18:25,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 18:18:25,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [489331382] [2024-11-18 18:18:25,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [489331382] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 18:18:25,995 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 18:18:25,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 18:18:25,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125489487] [2024-11-18 18:18:25,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 18:18:25,996 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 18:18:25,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 18:18:25,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 18:18:25,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-18 18:18:25,996 INFO L87 Difference]: Start difference. First operand 497 states and 729 transitions. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 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 18:18:26,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 18:18:26,041 INFO L93 Difference]: Finished difference Result 908 states and 1332 transitions. [2024-11-18 18:18:26,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 18:18:26,042 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 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 58 [2024-11-18 18:18:26,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 18:18:26,044 INFO L225 Difference]: With dead ends: 908 [2024-11-18 18:18:26,044 INFO L226 Difference]: Without dead ends: 495 [2024-11-18 18:18:26,044 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-11-18 18:18:26,045 INFO L432 NwaCegarLoop]: 532 mSDtfsCounter, 523 mSDsluCounter, 1584 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 523 SdHoareTripleChecker+Valid, 2116 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 18:18:26,045 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [523 Valid, 2116 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 18:18:26,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 495 states. [2024-11-18 18:18:26,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 495 to 495. [2024-11-18 18:18:26,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 495 states, 494 states have (on average 1.4676113360323886) internal successors, (725), 494 states have internal predecessors, (725), 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 18:18:26,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 495 states to 495 states and 725 transitions. [2024-11-18 18:18:26,053 INFO L78 Accepts]: Start accepts. Automaton has 495 states and 725 transitions. Word has length 58 [2024-11-18 18:18:26,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 18:18:26,054 INFO L471 AbstractCegarLoop]: Abstraction has 495 states and 725 transitions. [2024-11-18 18:18:26,054 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 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 18:18:26,054 INFO L276 IsEmpty]: Start isEmpty. Operand 495 states and 725 transitions. [2024-11-18 18:18:26,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-11-18 18:18:26,055 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 18:18:26,055 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, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 18:18:26,055 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-18 18:18:26,055 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 18:18:26,056 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 18:18:26,056 INFO L85 PathProgramCache]: Analyzing trace with hash 1833886746, now seen corresponding path program 1 times [2024-11-18 18:18:26,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 18:18:26,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323578617] [2024-11-18 18:18:26,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 18:18:26,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 18:18:26,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 18:18:26,259 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 18:18:26,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 18:18:26,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323578617] [2024-11-18 18:18:26,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1323578617] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 18:18:26,260 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 18:18:26,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 18:18:26,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786815310] [2024-11-18 18:18:26,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 18:18:26,260 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 18:18:26,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 18:18:26,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 18:18:26,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-18 18:18:26,261 INFO L87 Difference]: Start difference. First operand 495 states and 725 transitions. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 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 18:18:26,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 18:18:26,497 INFO L93 Difference]: Finished difference Result 1171 states and 1719 transitions. [2024-11-18 18:18:26,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 18:18:26,498 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 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 58 [2024-11-18 18:18:26,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 18:18:26,500 INFO L225 Difference]: With dead ends: 1171 [2024-11-18 18:18:26,500 INFO L226 Difference]: Without dead ends: 726 [2024-11-18 18:18:26,501 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-11-18 18:18:26,501 INFO L432 NwaCegarLoop]: 525 mSDtfsCounter, 1379 mSDsluCounter, 1418 mSDsCounter, 0 mSdLazyCounter, 197 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1379 SdHoareTripleChecker+Valid, 1943 SdHoareTripleChecker+Invalid, 198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 18:18:26,501 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1379 Valid, 1943 Invalid, 198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 197 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 18:18:26,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 726 states. [2024-11-18 18:18:26,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 726 to 460. [2024-11-18 18:18:26,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 460 states, 459 states have (on average 1.4662309368191722) internal successors, (673), 459 states have internal predecessors, (673), 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 18:18:26,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 460 states to 460 states and 673 transitions. [2024-11-18 18:18:26,511 INFO L78 Accepts]: Start accepts. Automaton has 460 states and 673 transitions. Word has length 58 [2024-11-18 18:18:26,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 18:18:26,512 INFO L471 AbstractCegarLoop]: Abstraction has 460 states and 673 transitions. [2024-11-18 18:18:26,512 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 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 18:18:26,512 INFO L276 IsEmpty]: Start isEmpty. Operand 460 states and 673 transitions. [2024-11-18 18:18:26,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2024-11-18 18:18:26,514 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 18:18:26,514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:18:26,514 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-18 18:18:26,514 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 18:18:26,515 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 18:18:26,515 INFO L85 PathProgramCache]: Analyzing trace with hash 321816023, now seen corresponding path program 1 times [2024-11-18 18:18:26,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 18:18:26,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233206907] [2024-11-18 18:18:26,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 18:18:26,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 18:18:26,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 18:18:27,293 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 26 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 18:18:27,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 18:18:27,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [233206907] [2024-11-18 18:18:27,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [233206907] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 18:18:27,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1805530885] [2024-11-18 18:18:27,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 18:18:27,294 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 18:18:27,294 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 18:18:27,296 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 18:18:27,304 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 18:18:27,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 18:18:27,777 INFO L255 TraceCheckSpWp]: Trace formula consists of 1435 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-18 18:18:27,786 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 18:18:28,096 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 26 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 18:18:28,096 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 18:18:28,449 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 26 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 18:18:28,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1805530885] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 18:18:28,451 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 18:18:28,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 10 [2024-11-18 18:18:28,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664684055] [2024-11-18 18:18:28,452 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 18:18:28,453 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-18 18:18:28,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 18:18:28,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-18 18:18:28,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-11-18 18:18:28,454 INFO L87 Difference]: Start difference. First operand 460 states and 673 transitions. Second operand has 10 states, 10 states have (on average 27.0) internal successors, (270), 10 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 18:18:28,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 18:18:28,758 INFO L93 Difference]: Finished difference Result 1125 states and 1646 transitions. [2024-11-18 18:18:28,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-18 18:18:28,759 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 27.0) internal successors, (270), 10 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 217 [2024-11-18 18:18:28,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 18:18:28,761 INFO L225 Difference]: With dead ends: 1125 [2024-11-18 18:18:28,761 INFO L226 Difference]: Without dead ends: 477 [2024-11-18 18:18:28,762 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 442 GetRequests, 430 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2024-11-18 18:18:28,763 INFO L432 NwaCegarLoop]: 543 mSDtfsCounter, 2116 mSDsluCounter, 1407 mSDsCounter, 0 mSdLazyCounter, 297 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2116 SdHoareTripleChecker+Valid, 1950 SdHoareTripleChecker+Invalid, 324 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 297 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-18 18:18:28,763 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2116 Valid, 1950 Invalid, 324 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 297 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-18 18:18:28,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 477 states. [2024-11-18 18:18:28,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 477 to 475. [2024-11-18 18:18:28,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 475 states, 474 states have (on average 1.4535864978902953) internal successors, (689), 474 states have internal predecessors, (689), 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 18:18:28,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 475 states to 475 states and 689 transitions. [2024-11-18 18:18:28,771 INFO L78 Accepts]: Start accepts. Automaton has 475 states and 689 transitions. Word has length 217 [2024-11-18 18:18:28,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 18:18:28,771 INFO L471 AbstractCegarLoop]: Abstraction has 475 states and 689 transitions. [2024-11-18 18:18:28,772 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 27.0) internal successors, (270), 10 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 18:18:28,772 INFO L276 IsEmpty]: Start isEmpty. Operand 475 states and 689 transitions. [2024-11-18 18:18:28,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2024-11-18 18:18:28,774 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 18:18:28,774 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:18:28,793 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 18:18:28,978 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-18 18:18:28,979 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 18:18:28,980 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 18:18:28,980 INFO L85 PathProgramCache]: Analyzing trace with hash -1759421432, now seen corresponding path program 1 times [2024-11-18 18:18:28,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 18:18:28,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324992965] [2024-11-18 18:18:28,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 18:18:28,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 18:18:29,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 18:18:29,799 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 18:18:29,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 18:18:29,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [324992965] [2024-11-18 18:18:29,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [324992965] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 18:18:29,800 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 18:18:29,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 18:18:29,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579436721] [2024-11-18 18:18:29,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 18:18:29,800 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 18:18:29,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 18:18:29,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 18:18:29,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-18 18:18:29,802 INFO L87 Difference]: Start difference. First operand 475 states and 689 transitions. Second operand has 6 states, 6 states have (on average 36.333333333333336) internal successors, (218), 6 states have internal predecessors, (218), 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 18:18:30,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 18:18:30,060 INFO L93 Difference]: Finished difference Result 1156 states and 1689 transitions. [2024-11-18 18:18:30,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 18:18:30,061 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 36.333333333333336) internal successors, (218), 6 states have internal predecessors, (218), 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 218 [2024-11-18 18:18:30,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 18:18:30,063 INFO L225 Difference]: With dead ends: 1156 [2024-11-18 18:18:30,063 INFO L226 Difference]: Without dead ends: 773 [2024-11-18 18:18:30,064 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-18 18:18:30,065 INFO L432 NwaCegarLoop]: 448 mSDtfsCounter, 1528 mSDsluCounter, 979 mSDsCounter, 0 mSdLazyCounter, 326 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1528 SdHoareTripleChecker+Valid, 1427 SdHoareTripleChecker+Invalid, 327 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 326 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 18:18:30,065 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1528 Valid, 1427 Invalid, 327 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 326 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 18:18:30,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 773 states. [2024-11-18 18:18:30,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 773 to 727. [2024-11-18 18:18:30,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 727 states, 726 states have (on average 1.4683195592286502) internal successors, (1066), 726 states have internal predecessors, (1066), 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 18:18:30,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 727 states to 727 states and 1066 transitions. [2024-11-18 18:18:30,079 INFO L78 Accepts]: Start accepts. Automaton has 727 states and 1066 transitions. Word has length 218 [2024-11-18 18:18:30,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 18:18:30,079 INFO L471 AbstractCegarLoop]: Abstraction has 727 states and 1066 transitions. [2024-11-18 18:18:30,079 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 36.333333333333336) internal successors, (218), 6 states have internal predecessors, (218), 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 18:18:30,079 INFO L276 IsEmpty]: Start isEmpty. Operand 727 states and 1066 transitions. [2024-11-18 18:18:30,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2024-11-18 18:18:30,081 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 18:18:30,081 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:18:30,081 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-18 18:18:30,081 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 18:18:30,082 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 18:18:30,082 INFO L85 PathProgramCache]: Analyzing trace with hash -1060257666, now seen corresponding path program 1 times [2024-11-18 18:18:30,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 18:18:30,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901407493] [2024-11-18 18:18:30,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 18:18:30,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 18:18:30,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 18:18:30,804 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 18:18:30,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 18:18:30,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901407493] [2024-11-18 18:18:30,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1901407493] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 18:18:30,805 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 18:18:30,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 18:18:30,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837348166] [2024-11-18 18:18:30,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 18:18:30,806 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 18:18:30,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 18:18:30,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 18:18:30,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 18:18:30,807 INFO L87 Difference]: Start difference. First operand 727 states and 1066 transitions. Second operand has 5 states, 5 states have (on average 43.8) internal successors, (219), 5 states have internal predecessors, (219), 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 18:18:31,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 18:18:31,135 INFO L93 Difference]: Finished difference Result 1360 states and 2003 transitions. [2024-11-18 18:18:31,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 18:18:31,135 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 43.8) internal successors, (219), 5 states have internal predecessors, (219), 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 219 [2024-11-18 18:18:31,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 18:18:31,138 INFO L225 Difference]: With dead ends: 1360 [2024-11-18 18:18:31,138 INFO L226 Difference]: Without dead ends: 727 [2024-11-18 18:18:31,141 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-18 18:18:31,141 INFO L432 NwaCegarLoop]: 377 mSDtfsCounter, 599 mSDsluCounter, 748 mSDsCounter, 0 mSdLazyCounter, 480 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 599 SdHoareTripleChecker+Valid, 1125 SdHoareTripleChecker+Invalid, 480 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 480 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-18 18:18:31,142 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [599 Valid, 1125 Invalid, 480 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 480 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-18 18:18:31,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 727 states. [2024-11-18 18:18:31,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 727 to 727. [2024-11-18 18:18:31,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 727 states, 726 states have (on average 1.4669421487603307) internal successors, (1065), 726 states have internal predecessors, (1065), 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 18:18:31,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 727 states to 727 states and 1065 transitions. [2024-11-18 18:18:31,156 INFO L78 Accepts]: Start accepts. Automaton has 727 states and 1065 transitions. Word has length 219 [2024-11-18 18:18:31,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 18:18:31,156 INFO L471 AbstractCegarLoop]: Abstraction has 727 states and 1065 transitions. [2024-11-18 18:18:31,157 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 43.8) internal successors, (219), 5 states have internal predecessors, (219), 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 18:18:31,157 INFO L276 IsEmpty]: Start isEmpty. Operand 727 states and 1065 transitions. [2024-11-18 18:18:31,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2024-11-18 18:18:31,159 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 18:18:31,159 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:18:31,159 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-18 18:18:31,159 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 18:18:31,160 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 18:18:31,160 INFO L85 PathProgramCache]: Analyzing trace with hash -1786280910, now seen corresponding path program 1 times [2024-11-18 18:18:31,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 18:18:31,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1370867703] [2024-11-18 18:18:31,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 18:18:31,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 18:18:31,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 18:18:32,019 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 18:18:32,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 18:18:32,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1370867703] [2024-11-18 18:18:32,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1370867703] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 18:18:32,020 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 18:18:32,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 18:18:32,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604108644] [2024-11-18 18:18:32,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 18:18:32,020 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 18:18:32,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 18:18:32,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 18:18:32,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 18:18:32,021 INFO L87 Difference]: Start difference. First operand 727 states and 1065 transitions. Second operand has 5 states, 5 states have (on average 44.0) internal successors, (220), 5 states have internal predecessors, (220), 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 18:18:32,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 18:18:32,381 INFO L93 Difference]: Finished difference Result 1112 states and 1631 transitions. [2024-11-18 18:18:32,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 18:18:32,381 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 44.0) internal successors, (220), 5 states have internal predecessors, (220), 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 220 [2024-11-18 18:18:32,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 18:18:32,384 INFO L225 Difference]: With dead ends: 1112 [2024-11-18 18:18:32,384 INFO L226 Difference]: Without dead ends: 729 [2024-11-18 18:18:32,385 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-18 18:18:32,385 INFO L432 NwaCegarLoop]: 376 mSDtfsCounter, 1223 mSDsluCounter, 748 mSDsCounter, 0 mSdLazyCounter, 481 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1223 SdHoareTripleChecker+Valid, 1124 SdHoareTripleChecker+Invalid, 481 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 481 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-18 18:18:32,385 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1223 Valid, 1124 Invalid, 481 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 481 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-18 18:18:32,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 729 states. [2024-11-18 18:18:32,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 729 to 728. [2024-11-18 18:18:32,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 728 states, 727 states have (on average 1.4662998624484183) internal successors, (1066), 727 states have internal predecessors, (1066), 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 18:18:32,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 728 states to 728 states and 1066 transitions. [2024-11-18 18:18:32,396 INFO L78 Accepts]: Start accepts. Automaton has 728 states and 1066 transitions. Word has length 220 [2024-11-18 18:18:32,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 18:18:32,397 INFO L471 AbstractCegarLoop]: Abstraction has 728 states and 1066 transitions. [2024-11-18 18:18:32,397 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 44.0) internal successors, (220), 5 states have internal predecessors, (220), 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 18:18:32,397 INFO L276 IsEmpty]: Start isEmpty. Operand 728 states and 1066 transitions. [2024-11-18 18:18:32,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2024-11-18 18:18:32,398 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 18:18:32,399 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:18:32,399 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-18 18:18:32,399 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 18:18:32,399 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 18:18:32,399 INFO L85 PathProgramCache]: Analyzing trace with hash -1803128783, now seen corresponding path program 1 times [2024-11-18 18:18:32,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 18:18:32,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94161784] [2024-11-18 18:18:32,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 18:18:32,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 18:18:32,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 18:18:33,425 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 18:18:33,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 18:18:33,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [94161784] [2024-11-18 18:18:33,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [94161784] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 18:18:33,426 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 18:18:33,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-18 18:18:33,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576129259] [2024-11-18 18:18:33,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 18:18:33,426 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-18 18:18:33,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 18:18:33,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-18 18:18:33,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-11-18 18:18:33,427 INFO L87 Difference]: Start difference. First operand 728 states and 1066 transitions. Second operand has 8 states, 8 states have (on average 27.625) internal successors, (221), 8 states have internal predecessors, (221), 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 18:18:34,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 18:18:34,291 INFO L93 Difference]: Finished difference Result 1481 states and 2173 transitions. [2024-11-18 18:18:34,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 18:18:34,292 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 27.625) internal successors, (221), 8 states have internal predecessors, (221), 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 221 [2024-11-18 18:18:34,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 18:18:34,296 INFO L225 Difference]: With dead ends: 1481 [2024-11-18 18:18:34,296 INFO L226 Difference]: Without dead ends: 1098 [2024-11-18 18:18:34,297 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-11-18 18:18:34,297 INFO L432 NwaCegarLoop]: 711 mSDtfsCounter, 814 mSDsluCounter, 2685 mSDsCounter, 0 mSdLazyCounter, 1324 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 814 SdHoareTripleChecker+Valid, 3396 SdHoareTripleChecker+Invalid, 1325 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1324 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-18 18:18:34,298 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [814 Valid, 3396 Invalid, 1325 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1324 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-18 18:18:34,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1098 states. [2024-11-18 18:18:34,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1098 to 732. [2024-11-18 18:18:34,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 732 states, 731 states have (on average 1.4637482900136798) internal successors, (1070), 731 states have internal predecessors, (1070), 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 18:18:34,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 732 states to 732 states and 1070 transitions. [2024-11-18 18:18:34,311 INFO L78 Accepts]: Start accepts. Automaton has 732 states and 1070 transitions. Word has length 221 [2024-11-18 18:18:34,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 18:18:34,311 INFO L471 AbstractCegarLoop]: Abstraction has 732 states and 1070 transitions. [2024-11-18 18:18:34,312 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 27.625) internal successors, (221), 8 states have internal predecessors, (221), 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 18:18:34,312 INFO L276 IsEmpty]: Start isEmpty. Operand 732 states and 1070 transitions. [2024-11-18 18:18:34,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2024-11-18 18:18:34,313 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 18:18:34,313 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:18:34,314 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-18 18:18:34,314 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 18:18:34,314 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 18:18:34,314 INFO L85 PathProgramCache]: Analyzing trace with hash -570264786, now seen corresponding path program 1 times [2024-11-18 18:18:34,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 18:18:34,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226430375] [2024-11-18 18:18:34,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 18:18:34,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 18:18:34,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 18:18:35,291 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 18:18:35,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 18:18:35,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1226430375] [2024-11-18 18:18:35,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1226430375] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 18:18:35,292 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 18:18:35,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-18 18:18:35,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112557300] [2024-11-18 18:18:35,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 18:18:35,292 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-18 18:18:35,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 18:18:35,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-18 18:18:35,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-11-18 18:18:35,293 INFO L87 Difference]: Start difference. First operand 732 states and 1070 transitions. Second operand has 8 states, 8 states have (on average 27.75) internal successors, (222), 8 states have internal predecessors, (222), 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 18:18:35,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 18:18:35,992 INFO L93 Difference]: Finished difference Result 1489 states and 2181 transitions. [2024-11-18 18:18:35,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 18:18:35,992 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 27.75) internal successors, (222), 8 states have internal predecessors, (222), 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 222 [2024-11-18 18:18:35,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 18:18:35,995 INFO L225 Difference]: With dead ends: 1489 [2024-11-18 18:18:35,995 INFO L226 Difference]: Without dead ends: 1102 [2024-11-18 18:18:35,996 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-11-18 18:18:35,997 INFO L432 NwaCegarLoop]: 712 mSDtfsCounter, 809 mSDsluCounter, 2689 mSDsCounter, 0 mSdLazyCounter, 1341 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 809 SdHoareTripleChecker+Valid, 3401 SdHoareTripleChecker+Invalid, 1342 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1341 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-18 18:18:35,997 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [809 Valid, 3401 Invalid, 1342 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1341 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-18 18:18:35,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1102 states. [2024-11-18 18:18:36,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1102 to 732. [2024-11-18 18:18:36,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 732 states, 731 states have (on average 1.4637482900136798) internal successors, (1070), 731 states have internal predecessors, (1070), 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 18:18:36,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 732 states to 732 states and 1070 transitions. [2024-11-18 18:18:36,018 INFO L78 Accepts]: Start accepts. Automaton has 732 states and 1070 transitions. Word has length 222 [2024-11-18 18:18:36,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 18:18:36,018 INFO L471 AbstractCegarLoop]: Abstraction has 732 states and 1070 transitions. [2024-11-18 18:18:36,018 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 27.75) internal successors, (222), 8 states have internal predecessors, (222), 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 18:18:36,018 INFO L276 IsEmpty]: Start isEmpty. Operand 732 states and 1070 transitions. [2024-11-18 18:18:36,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2024-11-18 18:18:36,019 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 18:18:36,019 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:18:36,020 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-18 18:18:36,020 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 18:18:36,020 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 18:18:36,020 INFO L85 PathProgramCache]: Analyzing trace with hash -1842957116, now seen corresponding path program 1 times [2024-11-18 18:18:36,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 18:18:36,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658241149] [2024-11-18 18:18:36,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 18:18:36,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 18:18:36,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 18:18:37,488 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 23 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-18 18:18:37,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 18:18:37,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1658241149] [2024-11-18 18:18:37,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1658241149] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 18:18:37,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1265047493] [2024-11-18 18:18:37,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 18:18:37,490 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 18:18:37,490 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 18:18:37,492 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 18:18:37,493 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 18:18:38,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 18:18:38,157 INFO L255 TraceCheckSpWp]: Trace formula consists of 1444 conjuncts, 53 conjuncts are in the unsatisfiable core [2024-11-18 18:18:38,172 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 18:18:38,817 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 22 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 18:18:38,817 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 18:18:39,388 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 26 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 18:18:39,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1265047493] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 18:18:39,389 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 18:18:39,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 12, 8] total 19 [2024-11-18 18:18:39,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257672441] [2024-11-18 18:18:39,390 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 18:18:39,390 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-18 18:18:39,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 18:18:39,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-18 18:18:39,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=264, Unknown=0, NotChecked=0, Total=342 [2024-11-18 18:18:39,391 INFO L87 Difference]: Start difference. First operand 732 states and 1070 transitions. Second operand has 19 states, 19 states have (on average 29.68421052631579) internal successors, (564), 19 states have internal predecessors, (564), 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 18:18:40,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 18:18:40,495 INFO L93 Difference]: Finished difference Result 1495 states and 2198 transitions. [2024-11-18 18:18:40,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-18 18:18:40,496 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 29.68421052631579) internal successors, (564), 19 states have internal predecessors, (564), 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 222 [2024-11-18 18:18:40,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 18:18:40,502 INFO L225 Difference]: With dead ends: 1495 [2024-11-18 18:18:40,503 INFO L226 Difference]: Without dead ends: 1108 [2024-11-18 18:18:40,504 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 456 GetRequests, 431 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=156, Invalid=546, Unknown=0, NotChecked=0, Total=702 [2024-11-18 18:18:40,507 INFO L432 NwaCegarLoop]: 368 mSDtfsCounter, 1700 mSDsluCounter, 3657 mSDsCounter, 0 mSdLazyCounter, 1859 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1700 SdHoareTripleChecker+Valid, 4025 SdHoareTripleChecker+Invalid, 1861 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1859 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-18 18:18:40,508 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1700 Valid, 4025 Invalid, 1861 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1859 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-18 18:18:40,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1108 states. [2024-11-18 18:18:40,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1108 to 732. [2024-11-18 18:18:40,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 732 states, 731 states have (on average 1.4637482900136798) internal successors, (1070), 731 states have internal predecessors, (1070), 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 18:18:40,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 732 states to 732 states and 1070 transitions. [2024-11-18 18:18:40,520 INFO L78 Accepts]: Start accepts. Automaton has 732 states and 1070 transitions. Word has length 222 [2024-11-18 18:18:40,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 18:18:40,521 INFO L471 AbstractCegarLoop]: Abstraction has 732 states and 1070 transitions. [2024-11-18 18:18:40,521 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 29.68421052631579) internal successors, (564), 19 states have internal predecessors, (564), 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 18:18:40,521 INFO L276 IsEmpty]: Start isEmpty. Operand 732 states and 1070 transitions. [2024-11-18 18:18:40,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2024-11-18 18:18:40,522 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 18:18:40,523 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:18:40,542 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-18 18:18:40,726 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,SelfDestructingSolverStorable17 [2024-11-18 18:18:40,727 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 18:18:40,728 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 18:18:40,728 INFO L85 PathProgramCache]: Analyzing trace with hash 323286701, now seen corresponding path program 1 times [2024-11-18 18:18:40,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 18:18:40,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107723059] [2024-11-18 18:18:40,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 18:18:40,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 18:18:40,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 18:18:41,331 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 24 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 18:18:41,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 18:18:41,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1107723059] [2024-11-18 18:18:41,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1107723059] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 18:18:41,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [710839981] [2024-11-18 18:18:41,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 18:18:41,332 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 18:18:41,332 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 18:18:41,333 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 18:18:41,335 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 18:18:41,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 18:18:41,906 INFO L255 TraceCheckSpWp]: Trace formula consists of 1447 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-18 18:18:41,912 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 18:18:42,428 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 24 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 18:18:42,428 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 18:18:42,923 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 24 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 18:18:42,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [710839981] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 18:18:42,923 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 18:18:42,923 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 18 [2024-11-18 18:18:42,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138123764] [2024-11-18 18:18:42,924 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 18:18:42,924 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-18 18:18:42,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 18:18:42,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-18 18:18:42,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=258, Unknown=0, NotChecked=0, Total=306 [2024-11-18 18:18:42,926 INFO L87 Difference]: Start difference. First operand 732 states and 1070 transitions. Second operand has 18 states, 18 states have (on average 33.611111111111114) internal successors, (605), 18 states have internal predecessors, (605), 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 18:18:43,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 18:18:43,675 INFO L93 Difference]: Finished difference Result 1485 states and 2163 transitions. [2024-11-18 18:18:43,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-18 18:18:43,676 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 33.611111111111114) internal successors, (605), 18 states have internal predecessors, (605), 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 223 [2024-11-18 18:18:43,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 18:18:43,679 INFO L225 Difference]: With dead ends: 1485 [2024-11-18 18:18:43,679 INFO L226 Difference]: Without dead ends: 799 [2024-11-18 18:18:43,680 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 461 GetRequests, 438 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=127, Invalid=473, Unknown=0, NotChecked=0, Total=600 [2024-11-18 18:18:43,680 INFO L432 NwaCegarLoop]: 374 mSDtfsCounter, 4944 mSDsluCounter, 2990 mSDsCounter, 0 mSdLazyCounter, 1448 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4944 SdHoareTripleChecker+Valid, 3364 SdHoareTripleChecker+Invalid, 1453 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 1448 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-18 18:18:43,680 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4944 Valid, 3364 Invalid, 1453 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 1448 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-18 18:18:43,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 799 states. [2024-11-18 18:18:43,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 799 to 746. [2024-11-18 18:18:43,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 746 states, 745 states have (on average 1.457718120805369) internal successors, (1086), 745 states have internal predecessors, (1086), 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 18:18:43,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 746 states to 746 states and 1086 transitions. [2024-11-18 18:18:43,690 INFO L78 Accepts]: Start accepts. Automaton has 746 states and 1086 transitions. Word has length 223 [2024-11-18 18:18:43,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 18:18:43,691 INFO L471 AbstractCegarLoop]: Abstraction has 746 states and 1086 transitions. [2024-11-18 18:18:43,691 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 33.611111111111114) internal successors, (605), 18 states have internal predecessors, (605), 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 18:18:43,691 INFO L276 IsEmpty]: Start isEmpty. Operand 746 states and 1086 transitions. [2024-11-18 18:18:43,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 385 [2024-11-18 18:18:43,694 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 18:18:43,694 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-18 18:18:43,715 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-18 18:18:43,895 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 18:18:43,895 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 18:18:43,896 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 18:18:43,896 INFO L85 PathProgramCache]: Analyzing trace with hash 1493491252, now seen corresponding path program 1 times [2024-11-18 18:18:43,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 18:18:43,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467221630] [2024-11-18 18:18:43,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 18:18:43,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 18:18:44,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 18:18:45,308 INFO L134 CoverageAnalysis]: Checked inductivity of 215 backedges. 185 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 18:18:45,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 18:18:45,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467221630] [2024-11-18 18:18:45,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1467221630] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 18:18:45,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1938866469] [2024-11-18 18:18:45,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 18:18:45,309 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 18:18:45,309 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 18:18:45,311 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 18:18:45,312 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 18:18:46,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 18:18:46,179 INFO L255 TraceCheckSpWp]: Trace formula consists of 2480 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-18 18:18:46,189 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 18:18:46,797 INFO L134 CoverageAnalysis]: Checked inductivity of 215 backedges. 185 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 18:18:46,797 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 18:18:47,539 INFO L134 CoverageAnalysis]: Checked inductivity of 215 backedges. 185 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 18:18:47,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1938866469] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 18:18:47,539 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 18:18:47,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2024-11-18 18:18:47,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040110765] [2024-11-18 18:18:47,540 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 18:18:47,542 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-18 18:18:47,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 18:18:47,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-18 18:18:47,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2024-11-18 18:18:47,543 INFO L87 Difference]: Start difference. First operand 746 states and 1086 transitions. Second operand has 15 states, 15 states have (on average 40.13333333333333) internal successors, (602), 15 states have internal predecessors, (602), 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 18:18:48,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 18:18:48,137 INFO L93 Difference]: Finished difference Result 1187 states and 1727 transitions. [2024-11-18 18:18:48,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-18 18:18:48,138 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 40.13333333333333) internal successors, (602), 15 states have internal predecessors, (602), 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 384 [2024-11-18 18:18:48,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 18:18:48,141 INFO L225 Difference]: With dead ends: 1187 [2024-11-18 18:18:48,141 INFO L226 Difference]: Without dead ends: 800 [2024-11-18 18:18:48,142 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 782 GetRequests, 761 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=109, Invalid=397, Unknown=0, NotChecked=0, Total=506 [2024-11-18 18:18:48,142 INFO L432 NwaCegarLoop]: 443 mSDtfsCounter, 3252 mSDsluCounter, 3334 mSDsCounter, 0 mSdLazyCounter, 762 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3252 SdHoareTripleChecker+Valid, 3777 SdHoareTripleChecker+Invalid, 764 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 762 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-18 18:18:48,142 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3252 Valid, 3777 Invalid, 764 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 762 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-18 18:18:48,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 800 states. [2024-11-18 18:18:48,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 800 to 798. [2024-11-18 18:18:48,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 798 states, 797 states have (on average 1.4504391468005018) internal successors, (1156), 797 states have internal predecessors, (1156), 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 18:18:48,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 798 states to 798 states and 1156 transitions. [2024-11-18 18:18:48,158 INFO L78 Accepts]: Start accepts. Automaton has 798 states and 1156 transitions. Word has length 384 [2024-11-18 18:18:48,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 18:18:48,158 INFO L471 AbstractCegarLoop]: Abstraction has 798 states and 1156 transitions. [2024-11-18 18:18:48,158 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 40.13333333333333) internal successors, (602), 15 states have internal predecessors, (602), 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 18:18:48,159 INFO L276 IsEmpty]: Start isEmpty. Operand 798 states and 1156 transitions. [2024-11-18 18:18:48,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 386 [2024-11-18 18:18:48,163 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 18:18:48,163 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-18 18:18:48,186 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 18:18:48,364 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 18:18:48,365 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 18:18:48,365 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 18:18:48,365 INFO L85 PathProgramCache]: Analyzing trace with hash 585240963, now seen corresponding path program 1 times [2024-11-18 18:18:48,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 18:18:48,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059950840] [2024-11-18 18:18:48,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 18:18:48,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 18:18:49,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 18:18:49,784 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 185 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 18:18:49,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 18:18:49,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059950840] [2024-11-18 18:18:49,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2059950840] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 18:18:49,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1110057031] [2024-11-18 18:18:49,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 18:18:49,785 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 18:18:49,785 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 18:18:49,787 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 18:18:49,788 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 18:18:51,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 18:18:51,048 INFO L255 TraceCheckSpWp]: Trace formula consists of 2483 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-18 18:18:51,056 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 18:18:51,714 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 216 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 18:18:51,714 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 18:18:51,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1110057031] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 18:18:51,714 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 18:18:51,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11 [2024-11-18 18:18:51,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560244414] [2024-11-18 18:18:51,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 18:18:51,715 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 18:18:51,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 18:18:51,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 18:18:51,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-11-18 18:18:51,716 INFO L87 Difference]: Start difference. First operand 798 states and 1156 transitions. Second operand has 6 states, 6 states have (on average 64.16666666666667) internal successors, (385), 6 states have internal predecessors, (385), 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 18:18:52,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 18:18:52,082 INFO L93 Difference]: Finished difference Result 1545 states and 2247 transitions. [2024-11-18 18:18:52,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 18:18:52,083 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 64.16666666666667) internal successors, (385), 6 states have internal predecessors, (385), 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 385 [2024-11-18 18:18:52,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 18:18:52,086 INFO L225 Difference]: With dead ends: 1545 [2024-11-18 18:18:52,086 INFO L226 Difference]: Without dead ends: 1158 [2024-11-18 18:18:52,087 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 392 GetRequests, 383 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-11-18 18:18:52,087 INFO L432 NwaCegarLoop]: 383 mSDtfsCounter, 964 mSDsluCounter, 1136 mSDsCounter, 0 mSdLazyCounter, 615 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 964 SdHoareTripleChecker+Valid, 1519 SdHoareTripleChecker+Invalid, 616 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 615 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-18 18:18:52,088 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [964 Valid, 1519 Invalid, 616 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 615 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-18 18:18:52,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1158 states. [2024-11-18 18:18:52,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1158 to 1156. [2024-11-18 18:18:52,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1156 states, 1155 states have (on average 1.451082251082251) internal successors, (1676), 1155 states have internal predecessors, (1676), 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 18:18:52,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1156 states to 1156 states and 1676 transitions. [2024-11-18 18:18:52,105 INFO L78 Accepts]: Start accepts. Automaton has 1156 states and 1676 transitions. Word has length 385 [2024-11-18 18:18:52,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 18:18:52,106 INFO L471 AbstractCegarLoop]: Abstraction has 1156 states and 1676 transitions. [2024-11-18 18:18:52,106 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 64.16666666666667) internal successors, (385), 6 states have internal predecessors, (385), 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 18:18:52,106 INFO L276 IsEmpty]: Start isEmpty. Operand 1156 states and 1676 transitions. [2024-11-18 18:18:52,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 386 [2024-11-18 18:18:52,108 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 18:18:52,109 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 18:18:52,134 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-18 18:18:52,312 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 18:18:52,313 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 18:18:52,313 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 18:18:52,314 INFO L85 PathProgramCache]: Analyzing trace with hash -1311956855, now seen corresponding path program 1 times [2024-11-18 18:18:52,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 18:18:52,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843126753] [2024-11-18 18:18:52,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 18:18:52,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 18:18:52,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 18:18:53,609 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 187 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 18:18:53,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 18:18:53,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843126753] [2024-11-18 18:18:53,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1843126753] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 18:18:53,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [860940810] [2024-11-18 18:18:53,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 18:18:53,610 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 18:18:53,610 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 18:18:53,612 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 18:18:53,614 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 18:18:54,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 18:18:54,867 INFO L255 TraceCheckSpWp]: Trace formula consists of 2483 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-11-18 18:18:54,874 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 18:18:55,291 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 187 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 18:18:55,292 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 18:18:55,915 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 186 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 18:18:55,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [860940810] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 18:18:55,915 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 18:18:55,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 9] total 15 [2024-11-18 18:18:55,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615566063] [2024-11-18 18:18:55,916 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 18:18:55,916 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-18 18:18:55,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 18:18:55,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-18 18:18:55,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2024-11-18 18:18:55,917 INFO L87 Difference]: Start difference. First operand 1156 states and 1676 transitions. Second operand has 15 states, 15 states have (on average 40.46666666666667) internal successors, (607), 15 states have internal predecessors, (607), 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 18:18:56,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 18:18:56,858 INFO L93 Difference]: Finished difference Result 1851 states and 2697 transitions. [2024-11-18 18:18:56,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-18 18:18:56,859 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 40.46666666666667) internal successors, (607), 15 states have internal predecessors, (607), 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 385 [2024-11-18 18:18:56,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 18:18:56,862 INFO L225 Difference]: With dead ends: 1851 [2024-11-18 18:18:56,862 INFO L226 Difference]: Without dead ends: 1160 [2024-11-18 18:18:56,864 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 785 GetRequests, 763 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=115, Invalid=437, Unknown=0, NotChecked=0, Total=552 [2024-11-18 18:18:56,864 INFO L432 NwaCegarLoop]: 371 mSDtfsCounter, 1724 mSDsluCounter, 3698 mSDsCounter, 0 mSdLazyCounter, 1811 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1724 SdHoareTripleChecker+Valid, 4069 SdHoareTripleChecker+Invalid, 1815 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1811 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-18 18:18:56,864 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1724 Valid, 4069 Invalid, 1815 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1811 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-18 18:18:56,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1160 states. [2024-11-18 18:18:56,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1160 to 1158. [2024-11-18 18:18:56,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1158 states, 1157 states have (on average 1.4503025064822819) internal successors, (1678), 1157 states have internal predecessors, (1678), 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 18:18:56,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1158 states to 1158 states and 1678 transitions. [2024-11-18 18:18:56,876 INFO L78 Accepts]: Start accepts. Automaton has 1158 states and 1678 transitions. Word has length 385 [2024-11-18 18:18:56,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 18:18:56,876 INFO L471 AbstractCegarLoop]: Abstraction has 1158 states and 1678 transitions. [2024-11-18 18:18:56,876 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 40.46666666666667) internal successors, (607), 15 states have internal predecessors, (607), 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 18:18:56,877 INFO L276 IsEmpty]: Start isEmpty. Operand 1158 states and 1678 transitions. [2024-11-18 18:18:56,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 387 [2024-11-18 18:18:56,878 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 18:18:56,879 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-18 18:18:56,900 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-18 18:18:57,079 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 18:18:57,080 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 18:18:57,080 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 18:18:57,081 INFO L85 PathProgramCache]: Analyzing trace with hash -1519051669, now seen corresponding path program 1 times [2024-11-18 18:18:57,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 18:18:57,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78838977] [2024-11-18 18:18:57,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 18:18:57,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 18:18:57,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 18:18:58,874 INFO L134 CoverageAnalysis]: Checked inductivity of 219 backedges. 81 proven. 138 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 18:18:58,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 18:18:58,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78838977] [2024-11-18 18:18:58,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [78838977] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 18:18:58,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1642748150] [2024-11-18 18:18:58,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 18:18:58,875 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 18:18:58,875 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 18:18:58,877 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 18:18:58,881 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 18:19:00,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 18:19:00,790 INFO L255 TraceCheckSpWp]: Trace formula consists of 2484 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-11-18 18:19:00,803 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 18:19:01,309 INFO L134 CoverageAnalysis]: Checked inductivity of 219 backedges. 184 proven. 31 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-18 18:19:01,309 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 18:19:01,847 INFO L134 CoverageAnalysis]: Checked inductivity of 219 backedges. 213 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-18 18:19:01,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1642748150] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 18:19:01,849 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 18:19:01,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 8] total 23 [2024-11-18 18:19:01,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658027551] [2024-11-18 18:19:01,849 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 18:19:01,850 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-18 18:19:01,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 18:19:01,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-18 18:19:01,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=425, Unknown=0, NotChecked=0, Total=506 [2024-11-18 18:19:01,851 INFO L87 Difference]: Start difference. First operand 1158 states and 1678 transitions. Second operand has 23 states, 23 states have (on average 41.65217391304348) internal successors, (958), 23 states have internal predecessors, (958), 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 18:19:04,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 18:19:04,218 INFO L93 Difference]: Finished difference Result 3459 states and 5025 transitions. [2024-11-18 18:19:04,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-18 18:19:04,219 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 41.65217391304348) internal successors, (958), 23 states have internal predecessors, (958), 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 386 [2024-11-18 18:19:04,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 18:19:04,224 INFO L225 Difference]: With dead ends: 3459 [2024-11-18 18:19:04,225 INFO L226 Difference]: Without dead ends: 2404 [2024-11-18 18:19:04,227 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 807 GetRequests, 761 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 430 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=436, Invalid=1820, Unknown=0, NotChecked=0, Total=2256 [2024-11-18 18:19:04,227 INFO L432 NwaCegarLoop]: 776 mSDtfsCounter, 3095 mSDsluCounter, 9095 mSDsCounter, 0 mSdLazyCounter, 4327 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3095 SdHoareTripleChecker+Valid, 9871 SdHoareTripleChecker+Invalid, 4331 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 4327 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-18 18:19:04,228 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3095 Valid, 9871 Invalid, 4331 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 4327 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-18 18:19:04,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2404 states. [2024-11-18 18:19:04,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2404 to 1638. [2024-11-18 18:19:04,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1638 states, 1637 states have (on average 1.4410507025045816) internal successors, (2359), 1637 states have internal predecessors, (2359), 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 18:19:04,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1638 states to 1638 states and 2359 transitions. [2024-11-18 18:19:04,249 INFO L78 Accepts]: Start accepts. Automaton has 1638 states and 2359 transitions. Word has length 386 [2024-11-18 18:19:04,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 18:19:04,249 INFO L471 AbstractCegarLoop]: Abstraction has 1638 states and 2359 transitions. [2024-11-18 18:19:04,250 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 41.65217391304348) internal successors, (958), 23 states have internal predecessors, (958), 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 18:19:04,250 INFO L276 IsEmpty]: Start isEmpty. Operand 1638 states and 2359 transitions. [2024-11-18 18:19:04,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 390 [2024-11-18 18:19:04,253 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 18:19:04,253 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 18:19:04,274 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 18:19:04,457 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 18:19:04,459 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 18:19:04,459 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 18:19:04,459 INFO L85 PathProgramCache]: Analyzing trace with hash 1862927634, now seen corresponding path program 1 times [2024-11-18 18:19:04,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 18:19:04,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183626897] [2024-11-18 18:19:04,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 18:19:04,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 18:19:05,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 18:19:06,288 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 81 proven. 139 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 18:19:06,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 18:19:06,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [183626897] [2024-11-18 18:19:06,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [183626897] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 18:19:06,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [236064820] [2024-11-18 18:19:06,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 18:19:06,288 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 18:19:06,288 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 18:19:06,291 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 18:19:06,299 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 18:19:07,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 18:19:07,861 INFO L255 TraceCheckSpWp]: Trace formula consists of 2493 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-18 18:19:07,867 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 18:19:08,376 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 81 proven. 139 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 18:19:08,376 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 18:19:09,079 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 81 proven. 139 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 18:19:09,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [236064820] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 18:19:09,083 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 18:19:09,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 24 [2024-11-18 18:19:09,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382303342] [2024-11-18 18:19:09,084 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 18:19:09,084 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-18 18:19:09,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 18:19:09,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-18 18:19:09,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=481, Unknown=0, NotChecked=0, Total=552 [2024-11-18 18:19:09,086 INFO L87 Difference]: Start difference. First operand 1638 states and 2359 transitions. Second operand has 24 states, 24 states have (on average 43.916666666666664) internal successors, (1054), 24 states have internal predecessors, (1054), 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 18:19:11,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 18:19:11,844 INFO L93 Difference]: Finished difference Result 3977 states and 5708 transitions. [2024-11-18 18:19:11,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2024-11-18 18:19:11,845 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 43.916666666666664) internal successors, (1054), 24 states have internal predecessors, (1054), 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 389 [2024-11-18 18:19:11,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 18:19:11,853 INFO L225 Difference]: With dead ends: 3977 [2024-11-18 18:19:11,853 INFO L226 Difference]: Without dead ends: 2871 [2024-11-18 18:19:11,855 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 827 GetRequests, 777 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 503 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=362, Invalid=2290, Unknown=0, NotChecked=0, Total=2652 [2024-11-18 18:19:11,856 INFO L432 NwaCegarLoop]: 1387 mSDtfsCounter, 2546 mSDsluCounter, 15126 mSDsCounter, 0 mSdLazyCounter, 5736 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2546 SdHoareTripleChecker+Valid, 16513 SdHoareTripleChecker+Invalid, 5739 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 5736 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-11-18 18:19:11,857 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2546 Valid, 16513 Invalid, 5739 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 5736 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-11-18 18:19:11,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2871 states. [2024-11-18 18:19:11,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2871 to 1626. [2024-11-18 18:19:11,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1626 states, 1625 states have (on average 1.4443076923076923) internal successors, (2347), 1625 states have internal predecessors, (2347), 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 18:19:11,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1626 states to 1626 states and 2347 transitions. [2024-11-18 18:19:11,903 INFO L78 Accepts]: Start accepts. Automaton has 1626 states and 2347 transitions. Word has length 389 [2024-11-18 18:19:11,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 18:19:11,903 INFO L471 AbstractCegarLoop]: Abstraction has 1626 states and 2347 transitions. [2024-11-18 18:19:11,904 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 43.916666666666664) internal successors, (1054), 24 states have internal predecessors, (1054), 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 18:19:11,904 INFO L276 IsEmpty]: Start isEmpty. Operand 1626 states and 2347 transitions. [2024-11-18 18:19:11,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 390 [2024-11-18 18:19:11,907 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 18:19:11,908 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-18 18:19:11,930 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 18:19:12,108 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,SelfDestructingSolverStorable23 [2024-11-18 18:19:12,109 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 18:19:12,109 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 18:19:12,109 INFO L85 PathProgramCache]: Analyzing trace with hash -420484277, now seen corresponding path program 1 times [2024-11-18 18:19:12,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 18:19:12,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056228227] [2024-11-18 18:19:12,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 18:19:12,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 18:19:13,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 18:19:15,444 INFO L134 CoverageAnalysis]: Checked inductivity of 219 backedges. 152 proven. 2 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2024-11-18 18:19:15,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 18:19:15,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056228227] [2024-11-18 18:19:15,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1056228227] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 18:19:15,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [846112497] [2024-11-18 18:19:15,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 18:19:15,445 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 18:19:15,445 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 18:19:15,446 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 18:19:15,447 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 18:19:17,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 18:19:17,478 INFO L255 TraceCheckSpWp]: Trace formula consists of 2493 conjuncts, 64 conjuncts are in the unsatisfiable core [2024-11-18 18:19:17,490 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 18:19:18,433 INFO L134 CoverageAnalysis]: Checked inductivity of 219 backedges. 163 proven. 49 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-18 18:19:18,433 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 18:19:19,659 INFO L134 CoverageAnalysis]: Checked inductivity of 219 backedges. 181 proven. 4 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-11-18 18:19:19,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [846112497] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 18:19:19,659 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 18:19:19,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 18, 16] total 37 [2024-11-18 18:19:19,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678969632] [2024-11-18 18:19:19,659 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 18:19:19,661 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2024-11-18 18:19:19,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 18:19:19,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2024-11-18 18:19:19,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=236, Invalid=1096, Unknown=0, NotChecked=0, Total=1332 [2024-11-18 18:19:19,664 INFO L87 Difference]: Start difference. First operand 1626 states and 2347 transitions. Second operand has 37 states, 37 states have (on average 23.35135135135135) internal successors, (864), 37 states have internal predecessors, (864), 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 18:19:22,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 18:19:22,456 INFO L93 Difference]: Finished difference Result 7637 states and 11058 transitions. [2024-11-18 18:19:22,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2024-11-18 18:19:22,457 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 23.35135135135135) internal successors, (864), 37 states have internal predecessors, (864), 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 389 [2024-11-18 18:19:22,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 18:19:22,473 INFO L225 Difference]: With dead ends: 7637 [2024-11-18 18:19:22,473 INFO L226 Difference]: Without dead ends: 6175 [2024-11-18 18:19:22,477 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 824 GetRequests, 750 SyntacticMatches, 1 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1489 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=746, Invalid=4804, Unknown=0, NotChecked=0, Total=5550 [2024-11-18 18:19:22,478 INFO L432 NwaCegarLoop]: 428 mSDtfsCounter, 6229 mSDsluCounter, 7455 mSDsCounter, 0 mSdLazyCounter, 4293 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6229 SdHoareTripleChecker+Valid, 7883 SdHoareTripleChecker+Invalid, 4305 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 4293 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-18 18:19:22,478 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6229 Valid, 7883 Invalid, 4305 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 4293 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-18 18:19:22,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6175 states. [2024-11-18 18:19:22,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6175 to 2685. [2024-11-18 18:19:22,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2685 states, 2684 states have (on average 1.4485842026825633) internal successors, (3888), 2684 states have internal predecessors, (3888), 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 18:19:22,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2685 states to 2685 states and 3888 transitions. [2024-11-18 18:19:22,535 INFO L78 Accepts]: Start accepts. Automaton has 2685 states and 3888 transitions. Word has length 389 [2024-11-18 18:19:22,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 18:19:22,536 INFO L471 AbstractCegarLoop]: Abstraction has 2685 states and 3888 transitions. [2024-11-18 18:19:22,536 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 23.35135135135135) internal successors, (864), 37 states have internal predecessors, (864), 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 18:19:22,536 INFO L276 IsEmpty]: Start isEmpty. Operand 2685 states and 3888 transitions. [2024-11-18 18:19:22,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 390 [2024-11-18 18:19:22,542 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 18:19:22,542 INFO L215 NwaCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-18 18:19:22,570 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 18:19:22,746 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-11-18 18:19:22,747 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 18:19:22,747 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 18:19:22,748 INFO L85 PathProgramCache]: Analyzing trace with hash -1296580042, now seen corresponding path program 1 times [2024-11-18 18:19:22,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 18:19:22,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023031970] [2024-11-18 18:19:22,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 18:19:22,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 18:19:23,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 18:19:24,843 INFO L134 CoverageAnalysis]: Checked inductivity of 219 backedges. 26 proven. 10 refuted. 0 times theorem prover too weak. 183 trivial. 0 not checked. [2024-11-18 18:19:24,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 18:19:24,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023031970] [2024-11-18 18:19:24,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1023031970] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 18:19:24,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [443158540] [2024-11-18 18:19:24,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 18:19:24,844 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 18:19:24,844 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 18:19:24,845 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 18:19:24,846 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 18:19:26,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 18:19:26,069 INFO L255 TraceCheckSpWp]: Trace formula consists of 2495 conjuncts, 44 conjuncts are in the unsatisfiable core [2024-11-18 18:19:26,077 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 18:19:27,480 INFO L134 CoverageAnalysis]: Checked inductivity of 219 backedges. 182 proven. 36 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-18 18:19:27,480 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 18:19:28,177 INFO L134 CoverageAnalysis]: Checked inductivity of 219 backedges. 81 proven. 138 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 18:19:28,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [443158540] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 18:19:28,178 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 18:19:28,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 12, 12] total 28 [2024-11-18 18:19:28,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534604295] [2024-11-18 18:19:28,178 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 18:19:28,179 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-18 18:19:28,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 18:19:28,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-18 18:19:28,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=641, Unknown=0, NotChecked=0, Total=756 [2024-11-18 18:19:28,180 INFO L87 Difference]: Start difference. First operand 2685 states and 3888 transitions. Second operand has 28 states, 28 states have (on average 34.0) internal successors, (952), 28 states have internal predecessors, (952), 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 18:19:31,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 18:19:31,472 INFO L93 Difference]: Finished difference Result 7838 states and 11349 transitions. [2024-11-18 18:19:31,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2024-11-18 18:19:31,473 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 34.0) internal successors, (952), 28 states have internal predecessors, (952), 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 389 [2024-11-18 18:19:31,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 18:19:31,483 INFO L225 Difference]: With dead ends: 7838 [2024-11-18 18:19:31,483 INFO L226 Difference]: Without dead ends: 5212 [2024-11-18 18:19:31,499 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 914 GetRequests, 794 SyntacticMatches, 0 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4484 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=1816, Invalid=12946, Unknown=0, NotChecked=0, Total=14762 [2024-11-18 18:19:31,500 INFO L432 NwaCegarLoop]: 411 mSDtfsCounter, 6638 mSDsluCounter, 6539 mSDsCounter, 0 mSdLazyCounter, 3310 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6638 SdHoareTripleChecker+Valid, 6950 SdHoareTripleChecker+Invalid, 3339 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 3310 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-18 18:19:31,500 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6638 Valid, 6950 Invalid, 3339 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 3310 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-18 18:19:31,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5212 states. [2024-11-18 18:19:31,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5212 to 3731. [2024-11-18 18:19:31,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3731 states, 3730 states have (on average 1.434048257372654) internal successors, (5349), 3730 states have internal predecessors, (5349), 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 18:19:31,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3731 states to 3731 states and 5349 transitions. [2024-11-18 18:19:31,563 INFO L78 Accepts]: Start accepts. Automaton has 3731 states and 5349 transitions. Word has length 389 [2024-11-18 18:19:31,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 18:19:31,563 INFO L471 AbstractCegarLoop]: Abstraction has 3731 states and 5349 transitions. [2024-11-18 18:19:31,564 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 34.0) internal successors, (952), 28 states have internal predecessors, (952), 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 18:19:31,564 INFO L276 IsEmpty]: Start isEmpty. Operand 3731 states and 5349 transitions. [2024-11-18 18:19:31,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 390 [2024-11-18 18:19:31,570 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 18:19:31,571 INFO L215 NwaCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-18 18:19:31,593 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-18 18:19:31,774 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,SelfDestructingSolverStorable25 [2024-11-18 18:19:31,775 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 18:19:31,775 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 18:19:31,775 INFO L85 PathProgramCache]: Analyzing trace with hash 1997869021, now seen corresponding path program 1 times [2024-11-18 18:19:31,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 18:19:31,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1150590279] [2024-11-18 18:19:31,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 18:19:31,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 18:19:33,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 18:19:35,289 INFO L134 CoverageAnalysis]: Checked inductivity of 219 backedges. 18 proven. 18 refuted. 0 times theorem prover too weak. 183 trivial. 0 not checked. [2024-11-18 18:19:35,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 18:19:35,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1150590279] [2024-11-18 18:19:35,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1150590279] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 18:19:35,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [539529731] [2024-11-18 18:19:35,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 18:19:35,290 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 18:19:35,290 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 18:19:35,291 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 18:19:35,292 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 18:19:36,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 18:19:36,717 INFO L255 TraceCheckSpWp]: Trace formula consists of 2495 conjuncts, 46 conjuncts are in the unsatisfiable core [2024-11-18 18:19:36,725 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 18:19:37,704 INFO L134 CoverageAnalysis]: Checked inductivity of 219 backedges. 79 proven. 45 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2024-11-18 18:19:37,704 INFO L311 TraceCheckSpWp]: Computing backward predicates...