./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-5.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3061b6dc Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-5.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 4639c6b0fb22706997cf521ef330c95d8a0fb320eefb7d80395f3064e0e7914f --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-18 23:44:13,373 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-18 23:44:13,452 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-18 23:44:13,457 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-18 23:44:13,458 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-18 23:44:13,483 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-18 23:44:13,484 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-18 23:44:13,484 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-18 23:44:13,484 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-18 23:44:13,484 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-18 23:44:13,485 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-18 23:44:13,485 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-18 23:44:13,485 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-18 23:44:13,485 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-18 23:44:13,486 INFO L153 SettingsManager]: * Use SBE=true [2024-11-18 23:44:13,487 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-18 23:44:13,487 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-18 23:44:13,487 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-18 23:44:13,488 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-18 23:44:13,488 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-18 23:44:13,489 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-18 23:44:13,489 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-18 23:44:13,489 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-18 23:44:13,489 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-18 23:44:13,490 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-18 23:44:13,490 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-18 23:44:13,490 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-18 23:44:13,490 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-18 23:44:13,490 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-18 23:44:13,491 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-18 23:44:13,491 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-18 23:44:13,491 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-18 23:44:13,491 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 23:44:13,492 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-18 23:44:13,492 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-18 23:44:13,492 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-18 23:44:13,492 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-18 23:44:13,492 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-18 23:44:13,492 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-18 23:44:13,493 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-18 23:44:13,493 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-18 23:44:13,493 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-18 23:44:13,493 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4639c6b0fb22706997cf521ef330c95d8a0fb320eefb7d80395f3064e0e7914f [2024-11-18 23:44:13,709 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-18 23:44:13,729 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-18 23:44:13,732 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-18 23:44:13,733 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-18 23:44:13,734 INFO L274 PluginConnector]: CDTParser initialized [2024-11-18 23:44:13,736 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-5.i [2024-11-18 23:44:15,050 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-18 23:44:15,253 INFO L384 CDTParser]: Found 1 translation units. [2024-11-18 23:44:15,253 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-5.i [2024-11-18 23:44:15,263 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c50e7e8a3/55c19dc6c1574fd48b10874373c75145/FLAG340affd5e [2024-11-18 23:44:15,608 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c50e7e8a3/55c19dc6c1574fd48b10874373c75145 [2024-11-18 23:44:15,610 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-18 23:44:15,611 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-18 23:44:15,612 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-18 23:44:15,612 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-18 23:44:15,617 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-18 23:44:15,618 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 11:44:15" (1/1) ... [2024-11-18 23:44:15,618 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12eae583 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:44:15, skipping insertion in model container [2024-11-18 23:44:15,619 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 11:44:15" (1/1) ... [2024-11-18 23:44:15,644 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-18 23:44:15,814 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-5.i[915,928] [2024-11-18 23:44:15,964 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 23:44:15,982 INFO L200 MainTranslator]: Completed pre-run [2024-11-18 23:44:15,994 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-5.i[915,928] [2024-11-18 23:44:16,047 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 23:44:16,063 INFO L204 MainTranslator]: Completed translation [2024-11-18 23:44:16,063 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:44:16 WrapperNode [2024-11-18 23:44:16,064 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-18 23:44:16,064 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-18 23:44:16,065 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-18 23:44:16,065 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-18 23:44:16,070 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:44:16" (1/1) ... [2024-11-18 23:44:16,092 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:44:16" (1/1) ... [2024-11-18 23:44:16,171 INFO L138 Inliner]: procedures = 26, calls = 48, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 415 [2024-11-18 23:44:16,171 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-18 23:44:16,172 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-18 23:44:16,172 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-18 23:44:16,172 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-18 23:44:16,184 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:44:16" (1/1) ... [2024-11-18 23:44:16,184 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:44:16" (1/1) ... [2024-11-18 23:44:16,199 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:44:16" (1/1) ... [2024-11-18 23:44:16,240 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 23:44:16,240 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:44:16" (1/1) ... [2024-11-18 23:44:16,241 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:44:16" (1/1) ... [2024-11-18 23:44:16,262 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:44:16" (1/1) ... [2024-11-18 23:44:16,266 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:44:16" (1/1) ... [2024-11-18 23:44:16,278 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:44:16" (1/1) ... [2024-11-18 23:44:16,283 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:44:16" (1/1) ... [2024-11-18 23:44:16,292 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-18 23:44:16,293 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-18 23:44:16,293 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-18 23:44:16,294 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-18 23:44:16,294 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:44:16" (1/1) ... [2024-11-18 23:44:16,299 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 23:44:16,310 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 23:44:16,325 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 23:44:16,328 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 23:44:16,368 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-18 23:44:16,369 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-18 23:44:16,369 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-18 23:44:16,369 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-18 23:44:16,369 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-18 23:44:16,369 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-18 23:44:16,460 INFO L238 CfgBuilder]: Building ICFG [2024-11-18 23:44:16,462 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-18 23:44:17,243 INFO L? ?]: Removed 49 outVars from TransFormulas that were not future-live. [2024-11-18 23:44:17,244 INFO L287 CfgBuilder]: Performing block encoding [2024-11-18 23:44:17,260 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-18 23:44:17,261 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-18 23:44:17,262 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 11:44:17 BoogieIcfgContainer [2024-11-18 23:44:17,262 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-18 23:44:17,264 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-18 23:44:17,264 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-18 23:44:17,267 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-18 23:44:17,267 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 11:44:15" (1/3) ... [2024-11-18 23:44:17,268 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@439d4b34 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 11:44:17, skipping insertion in model container [2024-11-18 23:44:17,268 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:44:16" (2/3) ... [2024-11-18 23:44:17,269 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@439d4b34 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 11:44:17, skipping insertion in model container [2024-11-18 23:44:17,269 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 11:44:17" (3/3) ... [2024-11-18 23:44:17,270 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount250_file-5.i [2024-11-18 23:44:17,285 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-18 23:44:17,285 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-18 23:44:17,352 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-18 23:44:17,357 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;@2e2af38c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-18 23:44:17,358 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-18 23:44:17,368 INFO L276 IsEmpty]: Start isEmpty. Operand has 169 states, 131 states have (on average 1.5419847328244274) internal successors, (202), 132 states have internal predecessors, (202), 35 states have call successors, (35), 1 states have call predecessors, (35), 1 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2024-11-18 23:44:17,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2024-11-18 23:44:17,383 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:44:17,384 INFO L215 NwaCegarLoop]: trace histogram [35, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:44:17,385 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:44:17,389 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:44:17,390 INFO L85 PathProgramCache]: Analyzing trace with hash 1525575319, now seen corresponding path program 1 times [2024-11-18 23:44:17,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:44:17,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541614011] [2024-11-18 23:44:17,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:44:17,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:44:17,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:44:17,821 INFO L134 CoverageAnalysis]: Checked inductivity of 2380 backedges. 0 proven. 68 refuted. 0 times theorem prover too weak. 2312 trivial. 0 not checked. [2024-11-18 23:44:17,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:44:17,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1541614011] [2024-11-18 23:44:17,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1541614011] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 23:44:17,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1237698062] [2024-11-18 23:44:17,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:44:17,826 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 23:44:17,826 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 23:44:17,828 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 23:44:17,830 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 23:44:18,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:44:18,104 INFO L255 TraceCheckSpWp]: Trace formula consists of 610 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-18 23:44:18,115 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 23:44:18,147 INFO L134 CoverageAnalysis]: Checked inductivity of 2380 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 2312 trivial. 0 not checked. [2024-11-18 23:44:18,148 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 23:44:18,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1237698062] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:44:18,148 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 23:44:18,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-18 23:44:18,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979391630] [2024-11-18 23:44:18,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:44:18,158 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-18 23:44:18,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:44:18,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-18 23:44:18,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-18 23:44:18,180 INFO L87 Difference]: Start difference. First operand has 169 states, 131 states have (on average 1.5419847328244274) internal successors, (202), 132 states have internal predecessors, (202), 35 states have call successors, (35), 1 states have call predecessors, (35), 1 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) Second operand has 2 states, 2 states have (on average 39.5) internal successors, (79), 2 states have internal predecessors, (79), 2 states have call successors, (35), 2 states have call predecessors, (35), 1 states have return successors, (35), 1 states have call predecessors, (35), 2 states have call successors, (35) [2024-11-18 23:44:18,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:44:18,216 INFO L93 Difference]: Finished difference Result 331 states and 573 transitions. [2024-11-18 23:44:18,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-18 23:44:18,219 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 39.5) internal successors, (79), 2 states have internal predecessors, (79), 2 states have call successors, (35), 2 states have call predecessors, (35), 1 states have return successors, (35), 1 states have call predecessors, (35), 2 states have call successors, (35) Word has length 249 [2024-11-18 23:44:18,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:44:18,226 INFO L225 Difference]: With dead ends: 331 [2024-11-18 23:44:18,227 INFO L226 Difference]: Without dead ends: 165 [2024-11-18 23:44:18,231 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 250 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-18 23:44:18,234 INFO L432 NwaCegarLoop]: 263 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 263 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 23:44:18,238 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 263 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 23:44:18,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2024-11-18 23:44:18,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 165. [2024-11-18 23:44:18,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 128 states have (on average 1.5078125) internal successors, (193), 128 states have internal predecessors, (193), 35 states have call successors, (35), 1 states have call predecessors, (35), 1 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2024-11-18 23:44:18,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 263 transitions. [2024-11-18 23:44:18,292 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 263 transitions. Word has length 249 [2024-11-18 23:44:18,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:44:18,292 INFO L471 AbstractCegarLoop]: Abstraction has 165 states and 263 transitions. [2024-11-18 23:44:18,293 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 39.5) internal successors, (79), 2 states have internal predecessors, (79), 2 states have call successors, (35), 2 states have call predecessors, (35), 1 states have return successors, (35), 1 states have call predecessors, (35), 2 states have call successors, (35) [2024-11-18 23:44:18,293 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 263 transitions. [2024-11-18 23:44:18,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2024-11-18 23:44:18,297 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:44:18,301 INFO L215 NwaCegarLoop]: trace histogram [35, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:44:18,316 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-18 23:44:18,502 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-18 23:44:18,503 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:44:18,503 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:44:18,503 INFO L85 PathProgramCache]: Analyzing trace with hash -364092613, now seen corresponding path program 1 times [2024-11-18 23:44:18,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:44:18,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984170081] [2024-11-18 23:44:18,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:44:18,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:44:18,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:44:19,235 INFO L134 CoverageAnalysis]: Checked inductivity of 2380 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2380 trivial. 0 not checked. [2024-11-18 23:44:19,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:44:19,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984170081] [2024-11-18 23:44:19,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1984170081] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:44:19,236 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 23:44:19,236 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 23:44:19,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456557128] [2024-11-18 23:44:19,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:44:19,237 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 23:44:19,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:44:19,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 23:44:19,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 23:44:19,238 INFO L87 Difference]: Start difference. First operand 165 states and 263 transitions. Second operand has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 1 states have call successors, (35), 1 states have call predecessors, (35), 1 states have return successors, (35), 1 states have call predecessors, (35), 1 states have call successors, (35) [2024-11-18 23:44:19,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:44:19,616 INFO L93 Difference]: Finished difference Result 548 states and 885 transitions. [2024-11-18 23:44:19,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 23:44:19,617 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 1 states have call successors, (35), 1 states have call predecessors, (35), 1 states have return successors, (35), 1 states have call predecessors, (35), 1 states have call successors, (35) Word has length 249 [2024-11-18 23:44:19,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:44:19,624 INFO L225 Difference]: With dead ends: 548 [2024-11-18 23:44:19,625 INFO L226 Difference]: Without dead ends: 386 [2024-11-18 23:44:19,627 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-18 23:44:19,629 INFO L432 NwaCegarLoop]: 347 mSDtfsCounter, 292 mSDsluCounter, 764 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 292 SdHoareTripleChecker+Valid, 1111 SdHoareTripleChecker+Invalid, 251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-18 23:44:19,630 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [292 Valid, 1111 Invalid, 251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-18 23:44:19,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 386 states. [2024-11-18 23:44:19,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 386 to 243. [2024-11-18 23:44:19,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 170 states have (on average 1.4352941176470588) internal successors, (244), 170 states have internal predecessors, (244), 70 states have call successors, (70), 2 states have call predecessors, (70), 2 states have return successors, (70), 70 states have call predecessors, (70), 70 states have call successors, (70) [2024-11-18 23:44:19,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 384 transitions. [2024-11-18 23:44:19,688 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 384 transitions. Word has length 249 [2024-11-18 23:44:19,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:44:19,689 INFO L471 AbstractCegarLoop]: Abstraction has 243 states and 384 transitions. [2024-11-18 23:44:19,689 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 1 states have call successors, (35), 1 states have call predecessors, (35), 1 states have return successors, (35), 1 states have call predecessors, (35), 1 states have call successors, (35) [2024-11-18 23:44:19,689 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 384 transitions. [2024-11-18 23:44:19,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2024-11-18 23:44:19,696 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:44:19,697 INFO L215 NwaCegarLoop]: trace histogram [35, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:44:19,697 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-18 23:44:19,697 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:44:19,697 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:44:19,698 INFO L85 PathProgramCache]: Analyzing trace with hash 794722371, now seen corresponding path program 1 times [2024-11-18 23:44:19,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:44:19,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42693564] [2024-11-18 23:44:19,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:44:19,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:44:19,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:44:20,345 INFO L134 CoverageAnalysis]: Checked inductivity of 2380 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2380 trivial. 0 not checked. [2024-11-18 23:44:20,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:44:20,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42693564] [2024-11-18 23:44:20,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [42693564] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:44:20,347 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 23:44:20,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-18 23:44:20,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164540147] [2024-11-18 23:44:20,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:44:20,348 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-18 23:44:20,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:44:20,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-18 23:44:20,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-18 23:44:20,351 INFO L87 Difference]: Start difference. First operand 243 states and 384 transitions. Second operand has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 1 states have call successors, (35), 1 states have call predecessors, (35), 1 states have return successors, (35), 1 states have call predecessors, (35), 1 states have call successors, (35) [2024-11-18 23:44:21,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:44:21,062 INFO L93 Difference]: Finished difference Result 568 states and 907 transitions. [2024-11-18 23:44:21,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 23:44:21,065 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 1 states have call successors, (35), 1 states have call predecessors, (35), 1 states have return successors, (35), 1 states have call predecessors, (35), 1 states have call successors, (35) Word has length 249 [2024-11-18 23:44:21,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:44:21,068 INFO L225 Difference]: With dead ends: 568 [2024-11-18 23:44:21,068 INFO L226 Difference]: Without dead ends: 406 [2024-11-18 23:44:21,069 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2024-11-18 23:44:21,069 INFO L432 NwaCegarLoop]: 290 mSDtfsCounter, 543 mSDsluCounter, 1326 mSDsCounter, 0 mSdLazyCounter, 672 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 543 SdHoareTripleChecker+Valid, 1616 SdHoareTripleChecker+Invalid, 788 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 672 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-18 23:44:21,070 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [543 Valid, 1616 Invalid, 788 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 672 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-18 23:44:21,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 406 states. [2024-11-18 23:44:21,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 406 to 343. [2024-11-18 23:44:21,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 343 states, 270 states have (on average 1.5148148148148148) internal successors, (409), 270 states have internal predecessors, (409), 70 states have call successors, (70), 2 states have call predecessors, (70), 2 states have return successors, (70), 70 states have call predecessors, (70), 70 states have call successors, (70) [2024-11-18 23:44:21,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 549 transitions. [2024-11-18 23:44:21,098 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 549 transitions. Word has length 249 [2024-11-18 23:44:21,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:44:21,099 INFO L471 AbstractCegarLoop]: Abstraction has 343 states and 549 transitions. [2024-11-18 23:44:21,100 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 1 states have call successors, (35), 1 states have call predecessors, (35), 1 states have return successors, (35), 1 states have call predecessors, (35), 1 states have call successors, (35) [2024-11-18 23:44:21,100 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 549 transitions. [2024-11-18 23:44:21,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2024-11-18 23:44:21,104 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:44:21,104 INFO L215 NwaCegarLoop]: trace histogram [35, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:44:21,104 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-18 23:44:21,105 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:44:21,105 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:44:21,106 INFO L85 PathProgramCache]: Analyzing trace with hash 2135390351, now seen corresponding path program 1 times [2024-11-18 23:44:21,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:44:21,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685543326] [2024-11-18 23:44:21,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:44:21,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:44:21,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:44:21,500 INFO L134 CoverageAnalysis]: Checked inductivity of 2380 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2380 trivial. 0 not checked. [2024-11-18 23:44:21,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:44:21,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685543326] [2024-11-18 23:44:21,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1685543326] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:44:21,501 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 23:44:21,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 23:44:21,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718293859] [2024-11-18 23:44:21,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:44:21,501 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 23:44:21,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:44:21,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 23:44:21,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 23:44:21,505 INFO L87 Difference]: Start difference. First operand 343 states and 549 transitions. Second operand has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 1 states have call successors, (35), 1 states have call predecessors, (35), 1 states have return successors, (35), 1 states have call predecessors, (35), 1 states have call successors, (35) [2024-11-18 23:44:21,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:44:21,740 INFO L93 Difference]: Finished difference Result 968 states and 1561 transitions. [2024-11-18 23:44:21,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 23:44:21,741 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 1 states have call successors, (35), 1 states have call predecessors, (35), 1 states have return successors, (35), 1 states have call predecessors, (35), 1 states have call successors, (35) Word has length 250 [2024-11-18 23:44:21,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:44:21,747 INFO L225 Difference]: With dead ends: 968 [2024-11-18 23:44:21,747 INFO L226 Difference]: Without dead ends: 704 [2024-11-18 23:44:21,749 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-18 23:44:21,750 INFO L432 NwaCegarLoop]: 379 mSDtfsCounter, 344 mSDsluCounter, 483 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 344 SdHoareTripleChecker+Valid, 862 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 23:44:21,751 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [344 Valid, 862 Invalid, 183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 23:44:21,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 704 states. [2024-11-18 23:44:21,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 704 to 603. [2024-11-18 23:44:21,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 603 states, 494 states have (on average 1.5303643724696356) internal successors, (756), 494 states have internal predecessors, (756), 105 states have call successors, (105), 3 states have call predecessors, (105), 3 states have return successors, (105), 105 states have call predecessors, (105), 105 states have call successors, (105) [2024-11-18 23:44:21,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 966 transitions. [2024-11-18 23:44:21,795 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 966 transitions. Word has length 250 [2024-11-18 23:44:21,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:44:21,796 INFO L471 AbstractCegarLoop]: Abstraction has 603 states and 966 transitions. [2024-11-18 23:44:21,796 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 1 states have call successors, (35), 1 states have call predecessors, (35), 1 states have return successors, (35), 1 states have call predecessors, (35), 1 states have call successors, (35) [2024-11-18 23:44:21,796 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 966 transitions. [2024-11-18 23:44:21,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2024-11-18 23:44:21,799 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:44:21,799 INFO L215 NwaCegarLoop]: trace histogram [35, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:44:21,799 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-18 23:44:21,800 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:44:21,800 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:44:21,800 INFO L85 PathProgramCache]: Analyzing trace with hash -243924746, now seen corresponding path program 1 times [2024-11-18 23:44:21,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:44:21,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218172077] [2024-11-18 23:44:21,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:44:21,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:44:21,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:44:22,470 INFO L134 CoverageAnalysis]: Checked inductivity of 2380 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2380 trivial. 0 not checked. [2024-11-18 23:44:22,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:44:22,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1218172077] [2024-11-18 23:44:22,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1218172077] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:44:22,471 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 23:44:22,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-18 23:44:22,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290194680] [2024-11-18 23:44:22,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:44:22,472 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-18 23:44:22,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:44:22,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-18 23:44:22,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-11-18 23:44:22,473 INFO L87 Difference]: Start difference. First operand 603 states and 966 transitions. Second operand has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 9 states have internal predecessors, (79), 2 states have call successors, (35), 1 states have call predecessors, (35), 1 states have return successors, (35), 2 states have call predecessors, (35), 2 states have call successors, (35) [2024-11-18 23:44:23,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:44:23,285 INFO L93 Difference]: Finished difference Result 1402 states and 2243 transitions. [2024-11-18 23:44:23,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 23:44:23,286 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 9 states have internal predecessors, (79), 2 states have call successors, (35), 1 states have call predecessors, (35), 1 states have return successors, (35), 2 states have call predecessors, (35), 2 states have call successors, (35) Word has length 251 [2024-11-18 23:44:23,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:44:23,293 INFO L225 Difference]: With dead ends: 1402 [2024-11-18 23:44:23,293 INFO L226 Difference]: Without dead ends: 1019 [2024-11-18 23:44:23,294 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2024-11-18 23:44:23,295 INFO L432 NwaCegarLoop]: 219 mSDtfsCounter, 962 mSDsluCounter, 1071 mSDsCounter, 0 mSdLazyCounter, 550 mSolverCounterSat, 166 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 962 SdHoareTripleChecker+Valid, 1290 SdHoareTripleChecker+Invalid, 716 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 166 IncrementalHoareTripleChecker+Valid, 550 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-18 23:44:23,296 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [962 Valid, 1290 Invalid, 716 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [166 Valid, 550 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-18 23:44:23,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1019 states. [2024-11-18 23:44:23,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1019 to 729. [2024-11-18 23:44:23,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 729 states, 620 states have (on average 1.5548387096774194) internal successors, (964), 620 states have internal predecessors, (964), 105 states have call successors, (105), 3 states have call predecessors, (105), 3 states have return successors, (105), 105 states have call predecessors, (105), 105 states have call successors, (105) [2024-11-18 23:44:23,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 729 states to 729 states and 1174 transitions. [2024-11-18 23:44:23,340 INFO L78 Accepts]: Start accepts. Automaton has 729 states and 1174 transitions. Word has length 251 [2024-11-18 23:44:23,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:44:23,342 INFO L471 AbstractCegarLoop]: Abstraction has 729 states and 1174 transitions. [2024-11-18 23:44:23,342 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 9 states have internal predecessors, (79), 2 states have call successors, (35), 1 states have call predecessors, (35), 1 states have return successors, (35), 2 states have call predecessors, (35), 2 states have call successors, (35) [2024-11-18 23:44:23,342 INFO L276 IsEmpty]: Start isEmpty. Operand 729 states and 1174 transitions. [2024-11-18 23:44:23,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2024-11-18 23:44:23,346 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:44:23,346 INFO L215 NwaCegarLoop]: trace histogram [35, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:44:23,346 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-18 23:44:23,347 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:44:23,347 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:44:23,347 INFO L85 PathProgramCache]: Analyzing trace with hash -1849732463, now seen corresponding path program 1 times [2024-11-18 23:44:23,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:44:23,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971912763] [2024-11-18 23:44:23,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:44:23,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:44:23,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:44:23,756 INFO L134 CoverageAnalysis]: Checked inductivity of 2380 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2380 trivial. 0 not checked. [2024-11-18 23:44:23,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:44:23,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971912763] [2024-11-18 23:44:23,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1971912763] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:44:23,757 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 23:44:23,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 23:44:23,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433951091] [2024-11-18 23:44:23,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:44:23,757 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 23:44:23,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:44:23,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 23:44:23,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-18 23:44:23,760 INFO L87 Difference]: Start difference. First operand 729 states and 1174 transitions. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 1 states have call successors, (35), 1 states have call predecessors, (35), 1 states have return successors, (35), 1 states have call predecessors, (35), 1 states have call successors, (35) [2024-11-18 23:44:23,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:44:23,973 INFO L93 Difference]: Finished difference Result 2175 states and 3499 transitions. [2024-11-18 23:44:23,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 23:44:23,974 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 1 states have call successors, (35), 1 states have call predecessors, (35), 1 states have return successors, (35), 1 states have call predecessors, (35), 1 states have call successors, (35) Word has length 251 [2024-11-18 23:44:23,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:44:23,981 INFO L225 Difference]: With dead ends: 2175 [2024-11-18 23:44:23,982 INFO L226 Difference]: Without dead ends: 1768 [2024-11-18 23:44:23,983 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-18 23:44:23,984 INFO L432 NwaCegarLoop]: 290 mSDtfsCounter, 390 mSDsluCounter, 431 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 390 SdHoareTripleChecker+Valid, 721 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 23:44:23,984 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [390 Valid, 721 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 23:44:23,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1768 states. [2024-11-18 23:44:24,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1768 to 1477. [2024-11-18 23:44:24,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1477 states, 1330 states have (on average 1.5827067669172932) internal successors, (2105), 1332 states have internal predecessors, (2105), 141 states have call successors, (141), 5 states have call predecessors, (141), 5 states have return successors, (141), 139 states have call predecessors, (141), 141 states have call successors, (141) [2024-11-18 23:44:24,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1477 states to 1477 states and 2387 transitions. [2024-11-18 23:44:24,048 INFO L78 Accepts]: Start accepts. Automaton has 1477 states and 2387 transitions. Word has length 251 [2024-11-18 23:44:24,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:44:24,049 INFO L471 AbstractCegarLoop]: Abstraction has 1477 states and 2387 transitions. [2024-11-18 23:44:24,049 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 1 states have call successors, (35), 1 states have call predecessors, (35), 1 states have return successors, (35), 1 states have call predecessors, (35), 1 states have call successors, (35) [2024-11-18 23:44:24,049 INFO L276 IsEmpty]: Start isEmpty. Operand 1477 states and 2387 transitions. [2024-11-18 23:44:24,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2024-11-18 23:44:24,053 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:44:24,053 INFO L215 NwaCegarLoop]: trace histogram [35, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:44:24,053 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-18 23:44:24,054 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:44:24,054 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:44:24,054 INFO L85 PathProgramCache]: Analyzing trace with hash 1176911064, now seen corresponding path program 1 times [2024-11-18 23:44:24,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:44:24,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101674398] [2024-11-18 23:44:24,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:44:24,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:44:24,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:44:24,617 INFO L134 CoverageAnalysis]: Checked inductivity of 2380 backedges. 36 proven. 66 refuted. 0 times theorem prover too weak. 2278 trivial. 0 not checked. [2024-11-18 23:44:24,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:44:24,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101674398] [2024-11-18 23:44:24,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [101674398] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 23:44:24,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [191265363] [2024-11-18 23:44:24,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:44:24,618 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 23:44:24,618 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 23:44:24,620 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 23:44:24,622 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 23:44:24,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:44:24,792 INFO L255 TraceCheckSpWp]: Trace formula consists of 608 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-18 23:44:24,800 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 23:44:25,055 INFO L134 CoverageAnalysis]: Checked inductivity of 2380 backedges. 1212 proven. 45 refuted. 0 times theorem prover too weak. 1123 trivial. 0 not checked. [2024-11-18 23:44:25,055 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 23:44:25,307 INFO L134 CoverageAnalysis]: Checked inductivity of 2380 backedges. 57 proven. 45 refuted. 0 times theorem prover too weak. 2278 trivial. 0 not checked. [2024-11-18 23:44:25,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [191265363] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 23:44:25,307 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 23:44:25,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5, 5] total 11 [2024-11-18 23:44:25,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117527186] [2024-11-18 23:44:25,308 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 23:44:25,309 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-18 23:44:25,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:44:25,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-18 23:44:25,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-11-18 23:44:25,310 INFO L87 Difference]: Start difference. First operand 1477 states and 2387 transitions. Second operand has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 4 states have call successors, (85), 2 states have call predecessors, (85), 4 states have return successors, (86), 4 states have call predecessors, (86), 4 states have call successors, (86) [2024-11-18 23:44:26,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:44:26,127 INFO L93 Difference]: Finished difference Result 2957 states and 4739 transitions. [2024-11-18 23:44:26,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-18 23:44:26,128 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 4 states have call successors, (85), 2 states have call predecessors, (85), 4 states have return successors, (86), 4 states have call predecessors, (86), 4 states have call successors, (86) Word has length 252 [2024-11-18 23:44:26,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:44:26,134 INFO L225 Difference]: With dead ends: 2957 [2024-11-18 23:44:26,134 INFO L226 Difference]: Without dead ends: 1553 [2024-11-18 23:44:26,136 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 528 GetRequests, 501 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 138 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=203, Invalid=553, Unknown=0, NotChecked=0, Total=756 [2024-11-18 23:44:26,137 INFO L432 NwaCegarLoop]: 248 mSDtfsCounter, 1151 mSDsluCounter, 1227 mSDsCounter, 0 mSdLazyCounter, 523 mSolverCounterSat, 295 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1169 SdHoareTripleChecker+Valid, 1475 SdHoareTripleChecker+Invalid, 818 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 295 IncrementalHoareTripleChecker+Valid, 523 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-18 23:44:26,137 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1169 Valid, 1475 Invalid, 818 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [295 Valid, 523 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-18 23:44:26,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1553 states. [2024-11-18 23:44:26,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1553 to 1304. [2024-11-18 23:44:26,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1304 states, 1115 states have (on average 1.5291479820627802) internal successors, (1705), 1115 states have internal predecessors, (1705), 175 states have call successors, (175), 13 states have call predecessors, (175), 13 states have return successors, (175), 175 states have call predecessors, (175), 175 states have call successors, (175) [2024-11-18 23:44:26,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1304 states to 1304 states and 2055 transitions. [2024-11-18 23:44:26,197 INFO L78 Accepts]: Start accepts. Automaton has 1304 states and 2055 transitions. Word has length 252 [2024-11-18 23:44:26,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:44:26,198 INFO L471 AbstractCegarLoop]: Abstraction has 1304 states and 2055 transitions. [2024-11-18 23:44:26,198 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 4 states have call successors, (85), 2 states have call predecessors, (85), 4 states have return successors, (86), 4 states have call predecessors, (86), 4 states have call successors, (86) [2024-11-18 23:44:26,198 INFO L276 IsEmpty]: Start isEmpty. Operand 1304 states and 2055 transitions. [2024-11-18 23:44:26,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2024-11-18 23:44:26,200 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:44:26,201 INFO L215 NwaCegarLoop]: trace histogram [35, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:44:26,215 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-18 23:44:26,401 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,SelfDestructingSolverStorable6 [2024-11-18 23:44:26,402 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:44:26,403 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:44:26,403 INFO L85 PathProgramCache]: Analyzing trace with hash 1478687444, now seen corresponding path program 1 times [2024-11-18 23:44:26,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:44:26,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200774338] [2024-11-18 23:44:26,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:44:26,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:44:26,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:44:27,605 INFO L134 CoverageAnalysis]: Checked inductivity of 2380 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2380 trivial. 0 not checked. [2024-11-18 23:44:27,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:44:27,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200774338] [2024-11-18 23:44:27,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1200774338] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:44:27,606 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 23:44:27,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-18 23:44:27,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797590735] [2024-11-18 23:44:27,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:44:27,607 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-18 23:44:27,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:44:27,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-18 23:44:27,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2024-11-18 23:44:27,607 INFO L87 Difference]: Start difference. First operand 1304 states and 2055 transitions. Second operand has 8 states, 8 states have (on average 10.25) internal successors, (82), 8 states have internal predecessors, (82), 1 states have call successors, (35), 1 states have call predecessors, (35), 1 states have return successors, (35), 1 states have call predecessors, (35), 1 states have call successors, (35) [2024-11-18 23:44:28,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:44:28,886 INFO L93 Difference]: Finished difference Result 5150 states and 7970 transitions. [2024-11-18 23:44:28,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-18 23:44:28,887 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.25) internal successors, (82), 8 states have internal predecessors, (82), 1 states have call successors, (35), 1 states have call predecessors, (35), 1 states have return successors, (35), 1 states have call predecessors, (35), 1 states have call successors, (35) Word has length 254 [2024-11-18 23:44:28,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:44:28,904 INFO L225 Difference]: With dead ends: 5150 [2024-11-18 23:44:28,905 INFO L226 Difference]: Without dead ends: 4184 [2024-11-18 23:44:28,910 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2024-11-18 23:44:28,911 INFO L432 NwaCegarLoop]: 353 mSDtfsCounter, 1407 mSDsluCounter, 1052 mSDsCounter, 0 mSdLazyCounter, 537 mSolverCounterSat, 270 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1407 SdHoareTripleChecker+Valid, 1405 SdHoareTripleChecker+Invalid, 807 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 270 IncrementalHoareTripleChecker+Valid, 537 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-18 23:44:28,912 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1407 Valid, 1405 Invalid, 807 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [270 Valid, 537 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-18 23:44:28,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4184 states. [2024-11-18 23:44:29,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4184 to 3402. [2024-11-18 23:44:29,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3402 states, 2906 states have (on average 1.5003441156228492) internal successors, (4360), 2918 states have internal predecessors, (4360), 459 states have call successors, (459), 36 states have call predecessors, (459), 36 states have return successors, (459), 447 states have call predecessors, (459), 459 states have call successors, (459) [2024-11-18 23:44:29,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3402 states to 3402 states and 5278 transitions. [2024-11-18 23:44:29,113 INFO L78 Accepts]: Start accepts. Automaton has 3402 states and 5278 transitions. Word has length 254 [2024-11-18 23:44:29,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:44:29,114 INFO L471 AbstractCegarLoop]: Abstraction has 3402 states and 5278 transitions. [2024-11-18 23:44:29,115 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.25) internal successors, (82), 8 states have internal predecessors, (82), 1 states have call successors, (35), 1 states have call predecessors, (35), 1 states have return successors, (35), 1 states have call predecessors, (35), 1 states have call successors, (35) [2024-11-18 23:44:29,115 INFO L276 IsEmpty]: Start isEmpty. Operand 3402 states and 5278 transitions. [2024-11-18 23:44:29,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2024-11-18 23:44:29,119 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:44:29,119 INFO L215 NwaCegarLoop]: trace histogram [35, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:44:29,119 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-18 23:44:29,119 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:44:29,120 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:44:29,120 INFO L85 PathProgramCache]: Analyzing trace with hash -353825006, now seen corresponding path program 1 times [2024-11-18 23:44:29,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:44:29,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917124971] [2024-11-18 23:44:29,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:44:29,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:44:29,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:44:29,818 INFO L134 CoverageAnalysis]: Checked inductivity of 2380 backedges. 66 proven. 36 refuted. 0 times theorem prover too weak. 2278 trivial. 0 not checked. [2024-11-18 23:44:29,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:44:29,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917124971] [2024-11-18 23:44:29,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [917124971] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 23:44:29,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1494218686] [2024-11-18 23:44:29,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:44:29,820 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 23:44:29,820 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 23:44:29,821 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 23:44:29,827 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 23:44:30,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:44:30,021 INFO L255 TraceCheckSpWp]: Trace formula consists of 615 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-18 23:44:30,026 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 23:44:30,227 INFO L134 CoverageAnalysis]: Checked inductivity of 2380 backedges. 1134 proven. 36 refuted. 0 times theorem prover too weak. 1210 trivial. 0 not checked. [2024-11-18 23:44:30,228 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 23:44:30,515 INFO L134 CoverageAnalysis]: Checked inductivity of 2380 backedges. 66 proven. 36 refuted. 0 times theorem prover too weak. 2278 trivial. 0 not checked. [2024-11-18 23:44:30,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1494218686] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 23:44:30,516 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 23:44:30,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 13 [2024-11-18 23:44:30,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385793773] [2024-11-18 23:44:30,516 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 23:44:30,517 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-18 23:44:30,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:44:30,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-18 23:44:30,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2024-11-18 23:44:30,518 INFO L87 Difference]: Start difference. First operand 3402 states and 5278 transitions. Second operand has 13 states, 13 states have (on average 8.384615384615385) internal successors, (109), 13 states have internal predecessors, (109), 2 states have call successors, (47), 2 states have call predecessors, (47), 4 states have return successors, (48), 2 states have call predecessors, (48), 2 states have call successors, (48) [2024-11-18 23:44:32,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:44:32,283 INFO L93 Difference]: Finished difference Result 11110 states and 16946 transitions. [2024-11-18 23:44:32,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-11-18 23:44:32,284 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 8.384615384615385) internal successors, (109), 13 states have internal predecessors, (109), 2 states have call successors, (47), 2 states have call predecessors, (47), 4 states have return successors, (48), 2 states have call predecessors, (48), 2 states have call successors, (48) Word has length 254 [2024-11-18 23:44:32,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:44:32,323 INFO L225 Difference]: With dead ends: 11110 [2024-11-18 23:44:32,323 INFO L226 Difference]: Without dead ends: 8286 [2024-11-18 23:44:32,332 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 541 GetRequests, 506 SyntacticMatches, 2 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 229 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=299, Invalid=891, Unknown=0, NotChecked=0, Total=1190 [2024-11-18 23:44:32,333 INFO L432 NwaCegarLoop]: 286 mSDtfsCounter, 1526 mSDsluCounter, 1727 mSDsCounter, 0 mSdLazyCounter, 1057 mSolverCounterSat, 384 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1580 SdHoareTripleChecker+Valid, 2013 SdHoareTripleChecker+Invalid, 1441 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 384 IncrementalHoareTripleChecker+Valid, 1057 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-18 23:44:32,334 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1580 Valid, 2013 Invalid, 1441 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [384 Valid, 1057 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-18 23:44:32,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8286 states. [2024-11-18 23:44:32,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8286 to 6760. [2024-11-18 23:44:32,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6760 states, 5769 states have (on average 1.470792165019934) internal successors, (8485), 5801 states have internal predecessors, (8485), 903 states have call successors, (903), 87 states have call predecessors, (903), 87 states have return successors, (903), 871 states have call predecessors, (903), 903 states have call successors, (903) [2024-11-18 23:44:32,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6760 states to 6760 states and 10291 transitions. [2024-11-18 23:44:32,709 INFO L78 Accepts]: Start accepts. Automaton has 6760 states and 10291 transitions. Word has length 254 [2024-11-18 23:44:32,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:44:32,710 INFO L471 AbstractCegarLoop]: Abstraction has 6760 states and 10291 transitions. [2024-11-18 23:44:32,710 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.384615384615385) internal successors, (109), 13 states have internal predecessors, (109), 2 states have call successors, (47), 2 states have call predecessors, (47), 4 states have return successors, (48), 2 states have call predecessors, (48), 2 states have call successors, (48) [2024-11-18 23:44:32,711 INFO L276 IsEmpty]: Start isEmpty. Operand 6760 states and 10291 transitions. [2024-11-18 23:44:32,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2024-11-18 23:44:32,715 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:44:32,716 INFO L215 NwaCegarLoop]: trace histogram [35, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:44:32,732 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 23:44:32,916 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 23:44:32,917 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:44:32,917 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:44:32,917 INFO L85 PathProgramCache]: Analyzing trace with hash -385221164, now seen corresponding path program 1 times [2024-11-18 23:44:32,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:44:32,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233907676] [2024-11-18 23:44:32,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:44:32,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:44:32,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:44:33,378 INFO L134 CoverageAnalysis]: Checked inductivity of 2380 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2380 trivial. 0 not checked. [2024-11-18 23:44:33,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:44:33,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [233907676] [2024-11-18 23:44:33,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [233907676] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:44:33,380 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 23:44:33,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 23:44:33,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903610841] [2024-11-18 23:44:33,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:44:33,381 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 23:44:33,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:44:33,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 23:44:33,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-18 23:44:33,382 INFO L87 Difference]: Start difference. First operand 6760 states and 10291 transitions. Second operand has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 states have internal predecessors, (82), 1 states have call successors, (35), 1 states have call predecessors, (35), 1 states have return successors, (35), 1 states have call predecessors, (35), 1 states have call successors, (35) [2024-11-18 23:44:34,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:44:34,098 INFO L93 Difference]: Finished difference Result 19070 states and 28701 transitions. [2024-11-18 23:44:34,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-18 23:44:34,099 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 states have internal predecessors, (82), 1 states have call successors, (35), 1 states have call predecessors, (35), 1 states have return successors, (35), 1 states have call predecessors, (35), 1 states have call successors, (35) Word has length 254 [2024-11-18 23:44:34,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:44:34,147 INFO L225 Difference]: With dead ends: 19070 [2024-11-18 23:44:34,148 INFO L226 Difference]: Without dead ends: 13090 [2024-11-18 23:44:34,161 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2024-11-18 23:44:34,162 INFO L432 NwaCegarLoop]: 245 mSDtfsCounter, 607 mSDsluCounter, 942 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 149 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 607 SdHoareTripleChecker+Valid, 1187 SdHoareTripleChecker+Invalid, 276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 149 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 23:44:34,163 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [607 Valid, 1187 Invalid, 276 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [149 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 23:44:34,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13090 states. [2024-11-18 23:44:34,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13090 to 9760. [2024-11-18 23:44:34,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9760 states, 8691 states have (on average 1.4931538373029571) internal successors, (12977), 8727 states have internal predecessors, (12977), 975 states have call successors, (975), 93 states have call predecessors, (975), 93 states have return successors, (975), 939 states have call predecessors, (975), 975 states have call successors, (975) [2024-11-18 23:44:34,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9760 states to 9760 states and 14927 transitions. [2024-11-18 23:44:34,664 INFO L78 Accepts]: Start accepts. Automaton has 9760 states and 14927 transitions. Word has length 254 [2024-11-18 23:44:34,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:44:34,664 INFO L471 AbstractCegarLoop]: Abstraction has 9760 states and 14927 transitions. [2024-11-18 23:44:34,664 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 states have internal predecessors, (82), 1 states have call successors, (35), 1 states have call predecessors, (35), 1 states have return successors, (35), 1 states have call predecessors, (35), 1 states have call successors, (35) [2024-11-18 23:44:34,665 INFO L276 IsEmpty]: Start isEmpty. Operand 9760 states and 14927 transitions. [2024-11-18 23:44:34,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2024-11-18 23:44:34,674 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:44:34,674 INFO L215 NwaCegarLoop]: trace histogram [35, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:44:34,674 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-18 23:44:34,674 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:44:34,675 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:44:34,675 INFO L85 PathProgramCache]: Analyzing trace with hash 634681942, now seen corresponding path program 1 times [2024-11-18 23:44:34,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:44:34,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883297767] [2024-11-18 23:44:34,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:44:34,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:44:34,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:44:34,766 INFO L134 CoverageAnalysis]: Checked inductivity of 2380 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2380 trivial. 0 not checked. [2024-11-18 23:44:34,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:44:34,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883297767] [2024-11-18 23:44:34,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1883297767] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:44:34,766 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 23:44:34,766 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 23:44:34,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098542427] [2024-11-18 23:44:34,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:44:34,767 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 23:44:34,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:44:34,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 23:44:34,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 23:44:34,768 INFO L87 Difference]: Start difference. First operand 9760 states and 14927 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 1 states have call successors, (35), 1 states have call predecessors, (35), 1 states have return successors, (35), 1 states have call predecessors, (35), 1 states have call successors, (35) [2024-11-18 23:44:35,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:44:35,246 INFO L93 Difference]: Finished difference Result 17470 states and 26517 transitions. [2024-11-18 23:44:35,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 23:44:35,247 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 1 states have call successors, (35), 1 states have call predecessors, (35), 1 states have return successors, (35), 1 states have call predecessors, (35), 1 states have call successors, (35) Word has length 254 [2024-11-18 23:44:35,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:44:35,279 INFO L225 Difference]: With dead ends: 17470 [2024-11-18 23:44:35,280 INFO L226 Difference]: Without dead ends: 10888 [2024-11-18 23:44:35,293 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 23:44:35,294 INFO L432 NwaCegarLoop]: 278 mSDtfsCounter, 219 mSDsluCounter, 234 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 219 SdHoareTripleChecker+Valid, 512 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 23:44:35,294 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [219 Valid, 512 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 23:44:35,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10888 states. [2024-11-18 23:44:35,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10888 to 10474. [2024-11-18 23:44:35,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10474 states, 8909 states have (on average 1.4545964754742395) internal successors, (12959), 8961 states have internal predecessors, (12959), 1415 states have call successors, (1415), 149 states have call predecessors, (1415), 149 states have return successors, (1415), 1363 states have call predecessors, (1415), 1415 states have call successors, (1415) [2024-11-18 23:44:35,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10474 states to 10474 states and 15789 transitions. [2024-11-18 23:44:35,819 INFO L78 Accepts]: Start accepts. Automaton has 10474 states and 15789 transitions. Word has length 254 [2024-11-18 23:44:35,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:44:35,822 INFO L471 AbstractCegarLoop]: Abstraction has 10474 states and 15789 transitions. [2024-11-18 23:44:35,822 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 1 states have call successors, (35), 1 states have call predecessors, (35), 1 states have return successors, (35), 1 states have call predecessors, (35), 1 states have call successors, (35) [2024-11-18 23:44:35,822 INFO L276 IsEmpty]: Start isEmpty. Operand 10474 states and 15789 transitions. [2024-11-18 23:44:35,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2024-11-18 23:44:35,830 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:44:35,830 INFO L215 NwaCegarLoop]: trace histogram [35, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:44:35,830 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-18 23:44:35,830 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:44:35,831 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:44:35,831 INFO L85 PathProgramCache]: Analyzing trace with hash 1335746520, now seen corresponding path program 1 times [2024-11-18 23:44:35,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:44:35,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945906131] [2024-11-18 23:44:35,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:44:35,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:44:35,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:44:36,487 INFO L134 CoverageAnalysis]: Checked inductivity of 2380 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2380 trivial. 0 not checked. [2024-11-18 23:44:36,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:44:36,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945906131] [2024-11-18 23:44:36,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [945906131] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:44:36,488 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 23:44:36,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 23:44:36,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500322355] [2024-11-18 23:44:36,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:44:36,489 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 23:44:36,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:44:36,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 23:44:36,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-18 23:44:36,490 INFO L87 Difference]: Start difference. First operand 10474 states and 15789 transitions. Second operand has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 states have internal predecessors, (82), 1 states have call successors, (35), 1 states have call predecessors, (35), 1 states have return successors, (35), 1 states have call predecessors, (35), 1 states have call successors, (35) [2024-11-18 23:44:37,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:44:37,787 INFO L93 Difference]: Finished difference Result 20414 states and 30467 transitions. [2024-11-18 23:44:37,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 23:44:37,791 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 states have internal predecessors, (82), 1 states have call successors, (35), 1 states have call predecessors, (35), 1 states have return successors, (35), 1 states have call predecessors, (35), 1 states have call successors, (35) Word has length 254 [2024-11-18 23:44:37,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:44:37,833 INFO L225 Difference]: With dead ends: 20414 [2024-11-18 23:44:37,833 INFO L226 Difference]: Without dead ends: 12976 [2024-11-18 23:44:37,855 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2024-11-18 23:44:37,856 INFO L432 NwaCegarLoop]: 276 mSDtfsCounter, 604 mSDsluCounter, 696 mSDsCounter, 0 mSdLazyCounter, 282 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 604 SdHoareTripleChecker+Valid, 972 SdHoareTripleChecker+Invalid, 363 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 282 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-18 23:44:37,856 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [604 Valid, 972 Invalid, 363 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 282 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-18 23:44:37,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12976 states. [2024-11-18 23:44:38,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12976 to 8988. [2024-11-18 23:44:38,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8988 states, 7625 states have (on average 1.4482622950819672) internal successors, (11043), 7665 states have internal predecessors, (11043), 1215 states have call successors, (1215), 147 states have call predecessors, (1215), 147 states have return successors, (1215), 1175 states have call predecessors, (1215), 1215 states have call successors, (1215) [2024-11-18 23:44:38,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8988 states to 8988 states and 13473 transitions. [2024-11-18 23:44:38,408 INFO L78 Accepts]: Start accepts. Automaton has 8988 states and 13473 transitions. Word has length 254 [2024-11-18 23:44:38,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:44:38,409 INFO L471 AbstractCegarLoop]: Abstraction has 8988 states and 13473 transitions. [2024-11-18 23:44:38,410 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 states have internal predecessors, (82), 1 states have call successors, (35), 1 states have call predecessors, (35), 1 states have return successors, (35), 1 states have call predecessors, (35), 1 states have call successors, (35) [2024-11-18 23:44:38,410 INFO L276 IsEmpty]: Start isEmpty. Operand 8988 states and 13473 transitions. [2024-11-18 23:44:38,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2024-11-18 23:44:38,416 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:44:38,416 INFO L215 NwaCegarLoop]: trace histogram [35, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:44:38,416 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-18 23:44:38,416 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:44:38,417 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:44:38,417 INFO L85 PathProgramCache]: Analyzing trace with hash -496765930, now seen corresponding path program 1 times [2024-11-18 23:44:38,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:44:38,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918465386] [2024-11-18 23:44:38,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:44:38,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:44:38,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:44:39,127 INFO L134 CoverageAnalysis]: Checked inductivity of 2380 backedges. 42 proven. 60 refuted. 0 times theorem prover too weak. 2278 trivial. 0 not checked. [2024-11-18 23:44:39,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:44:39,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918465386] [2024-11-18 23:44:39,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [918465386] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 23:44:39,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1171639745] [2024-11-18 23:44:39,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:44:39,128 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 23:44:39,128 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 23:44:39,129 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 23:44:39,130 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 23:44:39,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:44:39,341 INFO L255 TraceCheckSpWp]: Trace formula consists of 617 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-11-18 23:44:39,345 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 23:44:40,430 INFO L134 CoverageAnalysis]: Checked inductivity of 2380 backedges. 1159 proven. 195 refuted. 0 times theorem prover too weak. 1026 trivial. 0 not checked. [2024-11-18 23:44:40,430 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 23:44:41,863 INFO L134 CoverageAnalysis]: Checked inductivity of 2380 backedges. 84 proven. 117 refuted. 0 times theorem prover too weak. 2179 trivial. 0 not checked. [2024-11-18 23:44:41,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1171639745] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 23:44:41,863 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 23:44:41,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 14] total 34 [2024-11-18 23:44:41,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263082710] [2024-11-18 23:44:41,863 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 23:44:41,864 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-18 23:44:41,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:44:41,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-18 23:44:41,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=175, Invalid=947, Unknown=0, NotChecked=0, Total=1122 [2024-11-18 23:44:41,865 INFO L87 Difference]: Start difference. First operand 8988 states and 13473 transitions. Second operand has 34 states, 33 states have (on average 6.393939393939394) internal successors, (211), 32 states have internal predecessors, (211), 8 states have call successors, (105), 4 states have call predecessors, (105), 8 states have return successors, (105), 8 states have call predecessors, (105), 8 states have call successors, (105) [2024-11-18 23:44:45,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:44:45,704 INFO L93 Difference]: Finished difference Result 27185 states and 40389 transitions. [2024-11-18 23:44:45,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2024-11-18 23:44:45,704 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 33 states have (on average 6.393939393939394) internal successors, (211), 32 states have internal predecessors, (211), 8 states have call successors, (105), 4 states have call predecessors, (105), 8 states have return successors, (105), 8 states have call predecessors, (105), 8 states have call successors, (105) Word has length 254 [2024-11-18 23:44:45,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:44:45,757 INFO L225 Difference]: With dead ends: 27185 [2024-11-18 23:44:45,757 INFO L226 Difference]: Without dead ends: 19837 [2024-11-18 23:44:45,778 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 552 GetRequests, 491 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 886 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=823, Invalid=3083, Unknown=0, NotChecked=0, Total=3906 [2024-11-18 23:44:45,778 INFO L432 NwaCegarLoop]: 164 mSDtfsCounter, 3172 mSDsluCounter, 2100 mSDsCounter, 0 mSdLazyCounter, 2099 mSolverCounterSat, 412 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3173 SdHoareTripleChecker+Valid, 2264 SdHoareTripleChecker+Invalid, 2511 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 412 IncrementalHoareTripleChecker+Valid, 2099 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-18 23:44:45,779 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3173 Valid, 2264 Invalid, 2511 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [412 Valid, 2099 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-18 23:44:45,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19837 states. [2024-11-18 23:44:46,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19837 to 12511. [2024-11-18 23:44:46,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12511 states, 11145 states have (on average 1.4672050246747421) internal successors, (16352), 11185 states have internal predecessors, (16352), 1215 states have call successors, (1215), 150 states have call predecessors, (1215), 150 states have return successors, (1215), 1175 states have call predecessors, (1215), 1215 states have call successors, (1215) [2024-11-18 23:44:46,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12511 states to 12511 states and 18782 transitions. [2024-11-18 23:44:46,565 INFO L78 Accepts]: Start accepts. Automaton has 12511 states and 18782 transitions. Word has length 254 [2024-11-18 23:44:46,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:44:46,565 INFO L471 AbstractCegarLoop]: Abstraction has 12511 states and 18782 transitions. [2024-11-18 23:44:46,566 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 33 states have (on average 6.393939393939394) internal successors, (211), 32 states have internal predecessors, (211), 8 states have call successors, (105), 4 states have call predecessors, (105), 8 states have return successors, (105), 8 states have call predecessors, (105), 8 states have call successors, (105) [2024-11-18 23:44:46,566 INFO L276 IsEmpty]: Start isEmpty. Operand 12511 states and 18782 transitions. [2024-11-18 23:44:46,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2024-11-18 23:44:46,579 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:44:46,579 INFO L215 NwaCegarLoop]: trace histogram [35, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:44:46,599 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 23:44:46,779 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 23:44:46,780 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:44:46,781 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:44:46,781 INFO L85 PathProgramCache]: Analyzing trace with hash 577497753, now seen corresponding path program 1 times [2024-11-18 23:44:46,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:44:46,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036138920] [2024-11-18 23:44:46,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:44:46,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:44:46,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:44:47,692 INFO L134 CoverageAnalysis]: Checked inductivity of 2380 backedges. 84 proven. 114 refuted. 0 times theorem prover too weak. 2182 trivial. 0 not checked. [2024-11-18 23:44:47,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:44:47,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2036138920] [2024-11-18 23:44:47,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2036138920] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 23:44:47,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [984771706] [2024-11-18 23:44:47,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:44:47,693 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 23:44:47,693 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 23:44:47,694 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 23:44:47,699 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 23:44:47,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:44:47,898 INFO L255 TraceCheckSpWp]: Trace formula consists of 615 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-18 23:44:47,902 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 23:44:48,685 INFO L134 CoverageAnalysis]: Checked inductivity of 2380 backedges. 1204 proven. 114 refuted. 0 times theorem prover too weak. 1062 trivial. 0 not checked. [2024-11-18 23:44:48,685 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 23:44:49,614 INFO L134 CoverageAnalysis]: Checked inductivity of 2380 backedges. 84 proven. 117 refuted. 0 times theorem prover too weak. 2179 trivial. 0 not checked. [2024-11-18 23:44:49,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [984771706] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 23:44:49,615 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 23:44:49,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 12] total 26 [2024-11-18 23:44:49,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541314085] [2024-11-18 23:44:49,615 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 23:44:49,616 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-18 23:44:49,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:44:49,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-18 23:44:49,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=504, Unknown=0, NotChecked=0, Total=650 [2024-11-18 23:44:49,617 INFO L87 Difference]: Start difference. First operand 12511 states and 18782 transitions. Second operand has 26 states, 25 states have (on average 7.76) internal successors, (194), 24 states have internal predecessors, (194), 7 states have call successors, (105), 4 states have call predecessors, (105), 8 states have return successors, (105), 7 states have call predecessors, (105), 7 states have call successors, (105) [2024-11-18 23:45:02,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:45:02,927 INFO L93 Difference]: Finished difference Result 98970 states and 147092 transitions. [2024-11-18 23:45:02,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 113 states. [2024-11-18 23:45:02,927 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 7.76) internal successors, (194), 24 states have internal predecessors, (194), 7 states have call successors, (105), 4 states have call predecessors, (105), 8 states have return successors, (105), 7 states have call predecessors, (105), 7 states have call successors, (105) Word has length 254 [2024-11-18 23:45:02,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:45:03,140 INFO L225 Difference]: With dead ends: 98970 [2024-11-18 23:45:03,140 INFO L226 Difference]: Without dead ends: 90956 [2024-11-18 23:45:03,180 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 643 GetRequests, 516 SyntacticMatches, 0 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6711 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=3752, Invalid=12760, Unknown=0, NotChecked=0, Total=16512 [2024-11-18 23:45:03,181 INFO L432 NwaCegarLoop]: 480 mSDtfsCounter, 4222 mSDsluCounter, 4200 mSDsCounter, 0 mSdLazyCounter, 3885 mSolverCounterSat, 1204 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4251 SdHoareTripleChecker+Valid, 4680 SdHoareTripleChecker+Invalid, 5089 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1204 IncrementalHoareTripleChecker+Valid, 3885 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2024-11-18 23:45:03,181 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4251 Valid, 4680 Invalid, 5089 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1204 Valid, 3885 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2024-11-18 23:45:03,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90956 states. [2024-11-18 23:45:06,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90956 to 59418. [2024-11-18 23:45:06,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59418 states, 55598 states have (on average 1.518939530198928) internal successors, (84450), 55768 states have internal predecessors, (84450), 3345 states have call successors, (3345), 474 states have call predecessors, (3345), 474 states have return successors, (3345), 3175 states have call predecessors, (3345), 3345 states have call successors, (3345) [2024-11-18 23:45:06,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59418 states to 59418 states and 91140 transitions. [2024-11-18 23:45:06,813 INFO L78 Accepts]: Start accepts. Automaton has 59418 states and 91140 transitions. Word has length 254 [2024-11-18 23:45:06,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:45:06,814 INFO L471 AbstractCegarLoop]: Abstraction has 59418 states and 91140 transitions. [2024-11-18 23:45:06,815 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 7.76) internal successors, (194), 24 states have internal predecessors, (194), 7 states have call successors, (105), 4 states have call predecessors, (105), 8 states have return successors, (105), 7 states have call predecessors, (105), 7 states have call successors, (105) [2024-11-18 23:45:06,815 INFO L276 IsEmpty]: Start isEmpty. Operand 59418 states and 91140 transitions. [2024-11-18 23:45:06,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2024-11-18 23:45:06,850 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:45:06,851 INFO L215 NwaCegarLoop]: trace histogram [35, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:45:06,869 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 23:45:07,054 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-18 23:45:07,055 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:45:07,055 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:45:07,056 INFO L85 PathProgramCache]: Analyzing trace with hash 431047897, now seen corresponding path program 1 times [2024-11-18 23:45:07,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:45:07,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584074793] [2024-11-18 23:45:07,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:45:07,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:45:07,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:45:07,769 INFO L134 CoverageAnalysis]: Checked inductivity of 2380 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2380 trivial. 0 not checked. [2024-11-18 23:45:07,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:45:07,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [584074793] [2024-11-18 23:45:07,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [584074793] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:45:07,771 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 23:45:07,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-18 23:45:07,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145807170] [2024-11-18 23:45:07,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:45:07,772 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-18 23:45:07,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:45:07,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-18 23:45:07,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2024-11-18 23:45:07,773 INFO L87 Difference]: Start difference. First operand 59418 states and 91140 transitions. Second operand has 11 states, 11 states have (on average 7.545454545454546) internal successors, (83), 11 states have internal predecessors, (83), 2 states have call successors, (35), 1 states have call predecessors, (35), 1 states have return successors, (35), 2 states have call predecessors, (35), 2 states have call successors, (35) [2024-11-18 23:45:12,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:45:12,145 INFO L93 Difference]: Finished difference Result 127909 states and 193806 transitions. [2024-11-18 23:45:12,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-18 23:45:12,146 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 7.545454545454546) internal successors, (83), 11 states have internal predecessors, (83), 2 states have call successors, (35), 1 states have call predecessors, (35), 1 states have return successors, (35), 2 states have call predecessors, (35), 2 states have call successors, (35) Word has length 255 [2024-11-18 23:45:12,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:45:12,337 INFO L225 Difference]: With dead ends: 127909 [2024-11-18 23:45:12,338 INFO L226 Difference]: Without dead ends: 86239 [2024-11-18 23:45:12,392 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=137, Invalid=369, Unknown=0, NotChecked=0, Total=506 [2024-11-18 23:45:12,393 INFO L432 NwaCegarLoop]: 330 mSDtfsCounter, 810 mSDsluCounter, 2012 mSDsCounter, 0 mSdLazyCounter, 1262 mSolverCounterSat, 124 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 810 SdHoareTripleChecker+Valid, 2342 SdHoareTripleChecker+Invalid, 1386 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 124 IncrementalHoareTripleChecker+Valid, 1262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-18 23:45:12,393 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [810 Valid, 2342 Invalid, 1386 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [124 Valid, 1262 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-18 23:45:12,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86239 states. [2024-11-18 23:45:15,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86239 to 60699. [2024-11-18 23:45:15,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60699 states, 56879 states have (on average 1.5175020657887797) internal successors, (86314), 57049 states have internal predecessors, (86314), 3345 states have call successors, (3345), 474 states have call predecessors, (3345), 474 states have return successors, (3345), 3175 states have call predecessors, (3345), 3345 states have call successors, (3345) [2024-11-18 23:45:15,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60699 states to 60699 states and 93004 transitions. [2024-11-18 23:45:15,814 INFO L78 Accepts]: Start accepts. Automaton has 60699 states and 93004 transitions. Word has length 255 [2024-11-18 23:45:15,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:45:15,815 INFO L471 AbstractCegarLoop]: Abstraction has 60699 states and 93004 transitions. [2024-11-18 23:45:15,815 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.545454545454546) internal successors, (83), 11 states have internal predecessors, (83), 2 states have call successors, (35), 1 states have call predecessors, (35), 1 states have return successors, (35), 2 states have call predecessors, (35), 2 states have call successors, (35) [2024-11-18 23:45:15,815 INFO L276 IsEmpty]: Start isEmpty. Operand 60699 states and 93004 transitions. [2024-11-18 23:45:15,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2024-11-18 23:45:15,849 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:45:15,850 INFO L215 NwaCegarLoop]: trace histogram [35, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:45:15,850 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-18 23:45:15,850 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:45:15,850 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:45:15,850 INFO L85 PathProgramCache]: Analyzing trace with hash 1505311580, now seen corresponding path program 1 times [2024-11-18 23:45:15,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:45:15,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707660160] [2024-11-18 23:45:15,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:45:15,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:45:15,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:45:16,446 INFO L134 CoverageAnalysis]: Checked inductivity of 2380 backedges. 39 proven. 63 refuted. 0 times theorem prover too weak. 2278 trivial. 0 not checked. [2024-11-18 23:45:16,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:45:16,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707660160] [2024-11-18 23:45:16,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1707660160] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 23:45:16,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [21272118] [2024-11-18 23:45:16,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:45:16,447 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 23:45:16,447 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 23:45:16,448 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 23:45:16,450 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 23:45:16,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:45:16,645 INFO L255 TraceCheckSpWp]: Trace formula consists of 617 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-18 23:45:16,653 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 23:45:17,101 INFO L134 CoverageAnalysis]: Checked inductivity of 2380 backedges. 1152 proven. 63 refuted. 0 times theorem prover too weak. 1165 trivial. 0 not checked. [2024-11-18 23:45:17,101 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 23:45:17,370 INFO L134 CoverageAnalysis]: Checked inductivity of 2380 backedges. 39 proven. 63 refuted. 0 times theorem prover too weak. 2278 trivial. 0 not checked. [2024-11-18 23:45:17,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [21272118] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 23:45:17,371 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 23:45:17,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 8] total 21 [2024-11-18 23:45:17,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188280292] [2024-11-18 23:45:17,371 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 23:45:17,372 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-18 23:45:17,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:45:17,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-18 23:45:17,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=337, Unknown=0, NotChecked=0, Total=420 [2024-11-18 23:45:17,373 INFO L87 Difference]: Start difference. First operand 60699 states and 93004 transitions. Second operand has 21 states, 20 states have (on average 8.0) internal successors, (160), 20 states have internal predecessors, (160), 7 states have call successors, (105), 3 states have call predecessors, (105), 6 states have return successors, (105), 7 states have call predecessors, (105), 7 states have call successors, (105) [2024-11-18 23:45:25,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:45:25,376 INFO L93 Difference]: Finished difference Result 182396 states and 279528 transitions. [2024-11-18 23:45:25,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-11-18 23:45:25,377 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 8.0) internal successors, (160), 20 states have internal predecessors, (160), 7 states have call successors, (105), 3 states have call predecessors, (105), 6 states have return successors, (105), 7 states have call predecessors, (105), 7 states have call successors, (105) Word has length 255 [2024-11-18 23:45:25,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:45:25,738 INFO L225 Difference]: With dead ends: 182396 [2024-11-18 23:45:25,738 INFO L226 Difference]: Without dead ends: 131359 [2024-11-18 23:45:25,809 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 545 GetRequests, 503 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 401 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=484, Invalid=1408, Unknown=0, NotChecked=0, Total=1892 [2024-11-18 23:45:25,809 INFO L432 NwaCegarLoop]: 449 mSDtfsCounter, 1556 mSDsluCounter, 2691 mSDsCounter, 0 mSdLazyCounter, 1399 mSolverCounterSat, 380 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1589 SdHoareTripleChecker+Valid, 3140 SdHoareTripleChecker+Invalid, 1779 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 380 IncrementalHoareTripleChecker+Valid, 1399 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-18 23:45:25,810 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1589 Valid, 3140 Invalid, 1779 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [380 Valid, 1399 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-18 23:45:25,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131359 states.