./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-98.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-98.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 29660a505d12db16cb6ebaa6d023074ab3483b7ffc3518a7c288ecb4d9bcecec --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-18 23:49:35,297 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-18 23:49:35,352 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-18 23:49:35,356 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-18 23:49:35,356 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-18 23:49:35,385 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-18 23:49:35,386 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-18 23:49:35,386 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-18 23:49:35,387 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-18 23:49:35,388 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-18 23:49:35,390 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-18 23:49:35,390 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-18 23:49:35,391 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-18 23:49:35,391 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-18 23:49:35,391 INFO L153 SettingsManager]: * Use SBE=true [2024-11-18 23:49:35,391 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-18 23:49:35,392 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-18 23:49:35,392 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-18 23:49:35,392 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-18 23:49:35,393 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-18 23:49:35,393 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-18 23:49:35,395 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-18 23:49:35,395 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-18 23:49:35,395 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-18 23:49:35,396 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-18 23:49:35,396 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-18 23:49:35,396 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-18 23:49:35,396 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-18 23:49:35,397 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-18 23:49:35,397 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-18 23:49:35,397 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-18 23:49:35,397 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-18 23:49:35,398 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 23:49:35,398 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-18 23:49:35,398 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-18 23:49:35,399 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-18 23:49:35,399 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-18 23:49:35,399 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-18 23:49:35,399 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-18 23:49:35,399 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-18 23:49:35,400 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-18 23:49:35,400 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-18 23:49:35,400 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 29660a505d12db16cb6ebaa6d023074ab3483b7ffc3518a7c288ecb4d9bcecec [2024-11-18 23:49:35,691 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-18 23:49:35,712 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-18 23:49:35,715 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-18 23:49:35,717 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-18 23:49:35,717 INFO L274 PluginConnector]: CDTParser initialized [2024-11-18 23:49:35,718 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-98.i [2024-11-18 23:49:37,158 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-18 23:49:37,397 INFO L384 CDTParser]: Found 1 translation units. [2024-11-18 23:49:37,398 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-98.i [2024-11-18 23:49:37,409 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fa4481e71/1424e47101d84a6da4bb36afa8444654/FLAG27a44e35f [2024-11-18 23:49:37,721 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fa4481e71/1424e47101d84a6da4bb36afa8444654 [2024-11-18 23:49:37,723 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-18 23:49:37,724 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-18 23:49:37,727 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-18 23:49:37,728 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-18 23:49:37,734 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-18 23:49:37,735 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 11:49:37" (1/1) ... [2024-11-18 23:49:37,738 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1492902f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:49:37, skipping insertion in model container [2024-11-18 23:49:37,738 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 11:49:37" (1/1) ... [2024-11-18 23:49:37,784 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-18 23:49:37,969 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-98.i[916,929] [2024-11-18 23:49:38,168 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 23:49:38,182 INFO L200 MainTranslator]: Completed pre-run [2024-11-18 23:49:38,208 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-98.i[916,929] [2024-11-18 23:49:38,293 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 23:49:38,321 INFO L204 MainTranslator]: Completed translation [2024-11-18 23:49:38,322 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:49:38 WrapperNode [2024-11-18 23:49:38,322 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-18 23:49:38,323 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-18 23:49:38,323 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-18 23:49:38,323 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-18 23:49:38,329 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:49:38" (1/1) ... [2024-11-18 23:49:38,344 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:49:38" (1/1) ... [2024-11-18 23:49:38,398 INFO L138 Inliner]: procedures = 26, calls = 56, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 480 [2024-11-18 23:49:38,399 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-18 23:49:38,399 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-18 23:49:38,399 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-18 23:49:38,400 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-18 23:49:38,416 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:49:38" (1/1) ... [2024-11-18 23:49:38,416 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:49:38" (1/1) ... [2024-11-18 23:49:38,431 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:49:38" (1/1) ... [2024-11-18 23:49:38,472 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 23:49:38,472 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:49:38" (1/1) ... [2024-11-18 23:49:38,473 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:49:38" (1/1) ... [2024-11-18 23:49:38,497 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:49:38" (1/1) ... [2024-11-18 23:49:38,501 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:49:38" (1/1) ... [2024-11-18 23:49:38,509 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:49:38" (1/1) ... [2024-11-18 23:49:38,518 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:49:38" (1/1) ... [2024-11-18 23:49:38,528 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-18 23:49:38,529 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-18 23:49:38,529 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-18 23:49:38,529 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-18 23:49:38,531 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:49:38" (1/1) ... [2024-11-18 23:49:38,536 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 23:49:38,546 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 23:49:38,562 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 23:49:38,565 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 23:49:38,609 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-18 23:49:38,609 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-18 23:49:38,609 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-18 23:49:38,609 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-18 23:49:38,610 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-18 23:49:38,610 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-18 23:49:38,727 INFO L238 CfgBuilder]: Building ICFG [2024-11-18 23:49:38,729 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-18 23:49:39,628 INFO L? ?]: Removed 72 outVars from TransFormulas that were not future-live. [2024-11-18 23:49:39,628 INFO L287 CfgBuilder]: Performing block encoding [2024-11-18 23:49:39,650 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-18 23:49:39,651 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-18 23:49:39,651 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 11:49:39 BoogieIcfgContainer [2024-11-18 23:49:39,651 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-18 23:49:39,654 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-18 23:49:39,654 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-18 23:49:39,657 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-18 23:49:39,657 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 11:49:37" (1/3) ... [2024-11-18 23:49:39,658 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2dcf8c4b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 11:49:39, skipping insertion in model container [2024-11-18 23:49:39,658 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:49:38" (2/3) ... [2024-11-18 23:49:39,658 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2dcf8c4b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 11:49:39, skipping insertion in model container [2024-11-18 23:49:39,658 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 11:49:39" (3/3) ... [2024-11-18 23:49:39,659 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount250_file-98.i [2024-11-18 23:49:39,676 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-18 23:49:39,676 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-18 23:49:39,753 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-18 23:49:39,761 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;@6fac28e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-18 23:49:39,761 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-18 23:49:39,770 INFO L276 IsEmpty]: Start isEmpty. Operand has 200 states, 154 states have (on average 1.525974025974026) internal successors, (235), 155 states have internal predecessors, (235), 43 states have call successors, (43), 1 states have call predecessors, (43), 1 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) [2024-11-18 23:49:39,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2024-11-18 23:49:39,793 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:49:39,795 INFO L215 NwaCegarLoop]: trace histogram [43, 43, 43, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:49:39,796 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:49:39,801 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:49:39,802 INFO L85 PathProgramCache]: Analyzing trace with hash 540164620, now seen corresponding path program 1 times [2024-11-18 23:49:39,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:49:39,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710177166] [2024-11-18 23:49:39,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:49:39,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:49:39,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:49:40,268 INFO L134 CoverageAnalysis]: Checked inductivity of 3612 backedges. 0 proven. 84 refuted. 0 times theorem prover too weak. 3528 trivial. 0 not checked. [2024-11-18 23:49:40,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:49:40,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710177166] [2024-11-18 23:49:40,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [710177166] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 23:49:40,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [834091307] [2024-11-18 23:49:40,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:49:40,271 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 23:49:40,271 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 23:49:40,273 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 23:49:40,274 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 23:49:40,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:49:40,531 INFO L255 TraceCheckSpWp]: Trace formula consists of 714 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-18 23:49:40,548 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 23:49:40,601 INFO L134 CoverageAnalysis]: Checked inductivity of 3612 backedges. 84 proven. 0 refuted. 0 times theorem prover too weak. 3528 trivial. 0 not checked. [2024-11-18 23:49:40,602 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 23:49:40,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [834091307] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:49:40,606 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 23:49:40,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-18 23:49:40,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481480040] [2024-11-18 23:49:40,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:49:40,617 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-18 23:49:40,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:49:40,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-18 23:49:40,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-18 23:49:40,650 INFO L87 Difference]: Start difference. First operand has 200 states, 154 states have (on average 1.525974025974026) internal successors, (235), 155 states have internal predecessors, (235), 43 states have call successors, (43), 1 states have call predecessors, (43), 1 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) Second operand has 2 states, 2 states have (on average 42.0) internal successors, (84), 2 states have internal predecessors, (84), 2 states have call successors, (43), 2 states have call predecessors, (43), 1 states have return successors, (43), 1 states have call predecessors, (43), 2 states have call successors, (43) [2024-11-18 23:49:40,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:49:40,705 INFO L93 Difference]: Finished difference Result 393 states and 679 transitions. [2024-11-18 23:49:40,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-18 23:49:40,709 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 42.0) internal successors, (84), 2 states have internal predecessors, (84), 2 states have call successors, (43), 2 states have call predecessors, (43), 1 states have return successors, (43), 1 states have call predecessors, (43), 2 states have call successors, (43) Word has length 294 [2024-11-18 23:49:40,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:49:40,719 INFO L225 Difference]: With dead ends: 393 [2024-11-18 23:49:40,721 INFO L226 Difference]: Without dead ends: 196 [2024-11-18 23:49:40,729 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 295 GetRequests, 295 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 23:49:40,734 INFO L432 NwaCegarLoop]: 314 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, 314 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 23:49:40,736 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 314 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 23:49:40,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2024-11-18 23:49:40,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 196. [2024-11-18 23:49:40,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 151 states have (on average 1.509933774834437) internal successors, (228), 151 states have internal predecessors, (228), 43 states have call successors, (43), 1 states have call predecessors, (43), 1 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) [2024-11-18 23:49:40,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 314 transitions. [2024-11-18 23:49:40,805 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 314 transitions. Word has length 294 [2024-11-18 23:49:40,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:49:40,805 INFO L471 AbstractCegarLoop]: Abstraction has 196 states and 314 transitions. [2024-11-18 23:49:40,805 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 42.0) internal successors, (84), 2 states have internal predecessors, (84), 2 states have call successors, (43), 2 states have call predecessors, (43), 1 states have return successors, (43), 1 states have call predecessors, (43), 2 states have call successors, (43) [2024-11-18 23:49:40,806 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 314 transitions. [2024-11-18 23:49:40,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2024-11-18 23:49:40,812 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:49:40,813 INFO L215 NwaCegarLoop]: trace histogram [43, 43, 43, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:49:40,834 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 23:49:41,013 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 23:49:41,014 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:49:41,015 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:49:41,015 INFO L85 PathProgramCache]: Analyzing trace with hash -354380150, now seen corresponding path program 1 times [2024-11-18 23:49:41,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:49:41,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311708363] [2024-11-18 23:49:41,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:49:41,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:49:41,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:49:41,937 INFO L134 CoverageAnalysis]: Checked inductivity of 3612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3612 trivial. 0 not checked. [2024-11-18 23:49:41,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:49:41,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311708363] [2024-11-18 23:49:41,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [311708363] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:49:41,940 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 23:49:41,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 23:49:41,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394750906] [2024-11-18 23:49:41,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:49:41,942 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 23:49:41,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:49:41,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 23:49:41,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 23:49:41,944 INFO L87 Difference]: Start difference. First operand 196 states and 314 transitions. Second operand has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 1 states have call successors, (43), 1 states have call predecessors, (43), 1 states have return successors, (43), 1 states have call predecessors, (43), 1 states have call successors, (43) [2024-11-18 23:49:42,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:49:42,368 INFO L93 Difference]: Finished difference Result 662 states and 1060 transitions. [2024-11-18 23:49:42,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 23:49:42,369 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 1 states have call successors, (43), 1 states have call predecessors, (43), 1 states have return successors, (43), 1 states have call predecessors, (43), 1 states have call successors, (43) Word has length 294 [2024-11-18 23:49:42,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:49:42,376 INFO L225 Difference]: With dead ends: 662 [2024-11-18 23:49:42,378 INFO L226 Difference]: Without dead ends: 469 [2024-11-18 23:49:42,379 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 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 23:49:42,381 INFO L432 NwaCegarLoop]: 430 mSDtfsCounter, 540 mSDsluCounter, 675 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 540 SdHoareTripleChecker+Valid, 1105 SdHoareTripleChecker+Invalid, 207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-18 23:49:42,382 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [540 Valid, 1105 Invalid, 207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-18 23:49:42,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 469 states. [2024-11-18 23:49:42,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 469 to 386. [2024-11-18 23:49:42,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 386 states, 317 states have (on average 1.555205047318612) internal successors, (493), 318 states have internal predecessors, (493), 66 states have call successors, (66), 2 states have call predecessors, (66), 2 states have return successors, (66), 65 states have call predecessors, (66), 66 states have call successors, (66) [2024-11-18 23:49:42,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 625 transitions. [2024-11-18 23:49:42,440 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 625 transitions. Word has length 294 [2024-11-18 23:49:42,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:49:42,444 INFO L471 AbstractCegarLoop]: Abstraction has 386 states and 625 transitions. [2024-11-18 23:49:42,445 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 1 states have call successors, (43), 1 states have call predecessors, (43), 1 states have return successors, (43), 1 states have call predecessors, (43), 1 states have call successors, (43) [2024-11-18 23:49:42,445 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 625 transitions. [2024-11-18 23:49:42,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2024-11-18 23:49:42,449 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:49:42,450 INFO L215 NwaCegarLoop]: trace histogram [43, 43, 43, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:49:42,450 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-18 23:49:42,450 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:49:42,451 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:49:42,451 INFO L85 PathProgramCache]: Analyzing trace with hash 69266572, now seen corresponding path program 1 times [2024-11-18 23:49:42,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:49:42,452 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419112552] [2024-11-18 23:49:42,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:49:42,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:49:42,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:49:43,166 INFO L134 CoverageAnalysis]: Checked inductivity of 3612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3612 trivial. 0 not checked. [2024-11-18 23:49:43,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:49:43,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419112552] [2024-11-18 23:49:43,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [419112552] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:49:43,169 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 23:49:43,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 23:49:43,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374178269] [2024-11-18 23:49:43,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:49:43,170 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 23:49:43,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:49:43,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 23:49:43,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-18 23:49:43,173 INFO L87 Difference]: Start difference. First operand 386 states and 625 transitions. Second operand has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 1 states have call successors, (43), 1 states have call predecessors, (43), 1 states have return successors, (43), 1 states have call predecessors, (43), 1 states have call successors, (43) [2024-11-18 23:49:43,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:49:43,603 INFO L93 Difference]: Finished difference Result 1403 states and 2280 transitions. [2024-11-18 23:49:43,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 23:49:43,605 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 1 states have call successors, (43), 1 states have call predecessors, (43), 1 states have return successors, (43), 1 states have call predecessors, (43), 1 states have call successors, (43) Word has length 294 [2024-11-18 23:49:43,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:49:43,618 INFO L225 Difference]: With dead ends: 1403 [2024-11-18 23:49:43,619 INFO L226 Difference]: Without dead ends: 1020 [2024-11-18 23:49:43,621 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 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 23:49:43,622 INFO L432 NwaCegarLoop]: 282 mSDtfsCounter, 369 mSDsluCounter, 472 mSDsCounter, 0 mSdLazyCounter, 183 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 369 SdHoareTripleChecker+Valid, 754 SdHoareTripleChecker+Invalid, 189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-18 23:49:43,623 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [369 Valid, 754 Invalid, 189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 183 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-18 23:49:43,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1020 states. [2024-11-18 23:49:43,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1020 to 972. [2024-11-18 23:49:43,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 972 states, 835 states have (on average 1.5844311377245508) internal successors, (1323), 837 states have internal predecessors, (1323), 132 states have call successors, (132), 4 states have call predecessors, (132), 4 states have return successors, (132), 130 states have call predecessors, (132), 132 states have call successors, (132) [2024-11-18 23:49:43,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 972 states to 972 states and 1587 transitions. [2024-11-18 23:49:43,709 INFO L78 Accepts]: Start accepts. Automaton has 972 states and 1587 transitions. Word has length 294 [2024-11-18 23:49:43,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:49:43,713 INFO L471 AbstractCegarLoop]: Abstraction has 972 states and 1587 transitions. [2024-11-18 23:49:43,714 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 1 states have call successors, (43), 1 states have call predecessors, (43), 1 states have return successors, (43), 1 states have call predecessors, (43), 1 states have call successors, (43) [2024-11-18 23:49:43,714 INFO L276 IsEmpty]: Start isEmpty. Operand 972 states and 1587 transitions. [2024-11-18 23:49:43,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 296 [2024-11-18 23:49:43,719 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:49:43,720 INFO L215 NwaCegarLoop]: trace histogram [43, 43, 43, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:49:43,720 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-18 23:49:43,721 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:49:43,721 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:49:43,721 INFO L85 PathProgramCache]: Analyzing trace with hash -630987692, now seen corresponding path program 1 times [2024-11-18 23:49:43,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:49:43,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217268840] [2024-11-18 23:49:43,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:49:43,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:49:43,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:49:45,346 INFO L134 CoverageAnalysis]: Checked inductivity of 3612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3612 trivial. 0 not checked. [2024-11-18 23:49:45,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:49:45,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1217268840] [2024-11-18 23:49:45,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1217268840] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:49:45,348 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 23:49:45,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 23:49:45,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246804162] [2024-11-18 23:49:45,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:49:45,350 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 23:49:45,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:49:45,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 23:49:45,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-18 23:49:45,351 INFO L87 Difference]: Start difference. First operand 972 states and 1587 transitions. Second operand has 5 states, 5 states have (on average 16.6) internal successors, (83), 5 states have internal predecessors, (83), 1 states have call successors, (43), 1 states have call predecessors, (43), 1 states have return successors, (43), 1 states have call predecessors, (43), 1 states have call successors, (43) [2024-11-18 23:49:46,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:49:46,582 INFO L93 Difference]: Finished difference Result 1941 states and 3171 transitions. [2024-11-18 23:49:46,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 23:49:46,583 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 5 states have internal predecessors, (83), 1 states have call successors, (43), 1 states have call predecessors, (43), 1 states have return successors, (43), 1 states have call predecessors, (43), 1 states have call successors, (43) Word has length 295 [2024-11-18 23:49:46,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:49:46,592 INFO L225 Difference]: With dead ends: 1941 [2024-11-18 23:49:46,593 INFO L226 Difference]: Without dead ends: 972 [2024-11-18 23:49:46,595 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-18 23:49:46,599 INFO L432 NwaCegarLoop]: 239 mSDtfsCounter, 391 mSDsluCounter, 296 mSDsCounter, 0 mSdLazyCounter, 270 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 391 SdHoareTripleChecker+Valid, 535 SdHoareTripleChecker+Invalid, 274 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 270 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-18 23:49:46,600 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [391 Valid, 535 Invalid, 274 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 270 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-18 23:49:46,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 972 states. [2024-11-18 23:49:46,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 972 to 972. [2024-11-18 23:49:46,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 972 states, 835 states have (on average 1.5736526946107785) internal successors, (1314), 837 states have internal predecessors, (1314), 132 states have call successors, (132), 4 states have call predecessors, (132), 4 states have return successors, (132), 130 states have call predecessors, (132), 132 states have call successors, (132) [2024-11-18 23:49:46,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 972 states to 972 states and 1578 transitions. [2024-11-18 23:49:46,669 INFO L78 Accepts]: Start accepts. Automaton has 972 states and 1578 transitions. Word has length 295 [2024-11-18 23:49:46,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:49:46,671 INFO L471 AbstractCegarLoop]: Abstraction has 972 states and 1578 transitions. [2024-11-18 23:49:46,671 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 5 states have internal predecessors, (83), 1 states have call successors, (43), 1 states have call predecessors, (43), 1 states have return successors, (43), 1 states have call predecessors, (43), 1 states have call successors, (43) [2024-11-18 23:49:46,671 INFO L276 IsEmpty]: Start isEmpty. Operand 972 states and 1578 transitions. [2024-11-18 23:49:46,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 298 [2024-11-18 23:49:46,677 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:49:46,678 INFO L215 NwaCegarLoop]: trace histogram [43, 43, 43, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:49:46,678 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-18 23:49:46,678 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:49:46,679 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:49:46,679 INFO L85 PathProgramCache]: Analyzing trace with hash -760171441, now seen corresponding path program 1 times [2024-11-18 23:49:46,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:49:46,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967463736] [2024-11-18 23:49:46,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:49:46,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:49:46,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:49:47,515 INFO L134 CoverageAnalysis]: Checked inductivity of 3612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3612 trivial. 0 not checked. [2024-11-18 23:49:47,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:49:47,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [967463736] [2024-11-18 23:49:47,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [967463736] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:49:47,515 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 23:49:47,515 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 23:49:47,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485868200] [2024-11-18 23:49:47,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:49:47,518 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 23:49:47,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:49:47,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 23:49:47,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-18 23:49:47,520 INFO L87 Difference]: Start difference. First operand 972 states and 1578 transitions. Second operand has 5 states, 5 states have (on average 17.0) internal successors, (85), 5 states have internal predecessors, (85), 2 states have call successors, (43), 1 states have call predecessors, (43), 1 states have return successors, (43), 2 states have call predecessors, (43), 2 states have call successors, (43) [2024-11-18 23:49:47,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:49:47,837 INFO L93 Difference]: Finished difference Result 1950 states and 3167 transitions. [2024-11-18 23:49:47,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 23:49:47,838 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 5 states have internal predecessors, (85), 2 states have call successors, (43), 1 states have call predecessors, (43), 1 states have return successors, (43), 2 states have call predecessors, (43), 2 states have call successors, (43) Word has length 297 [2024-11-18 23:49:47,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:49:47,847 INFO L225 Difference]: With dead ends: 1950 [2024-11-18 23:49:47,847 INFO L226 Difference]: Without dead ends: 981 [2024-11-18 23:49:47,849 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-18 23:49:47,850 INFO L432 NwaCegarLoop]: 289 mSDtfsCounter, 465 mSDsluCounter, 544 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 465 SdHoareTripleChecker+Valid, 833 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-18 23:49:47,850 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [465 Valid, 833 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-18 23:49:47,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 981 states. [2024-11-18 23:49:47,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 981 to 975. [2024-11-18 23:49:47,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 975 states, 838 states have (on average 1.571599045346062) internal successors, (1317), 840 states have internal predecessors, (1317), 132 states have call successors, (132), 4 states have call predecessors, (132), 4 states have return successors, (132), 130 states have call predecessors, (132), 132 states have call successors, (132) [2024-11-18 23:49:47,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 975 states to 975 states and 1581 transitions. [2024-11-18 23:49:47,908 INFO L78 Accepts]: Start accepts. Automaton has 975 states and 1581 transitions. Word has length 297 [2024-11-18 23:49:47,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:49:47,909 INFO L471 AbstractCegarLoop]: Abstraction has 975 states and 1581 transitions. [2024-11-18 23:49:47,909 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 5 states have internal predecessors, (85), 2 states have call successors, (43), 1 states have call predecessors, (43), 1 states have return successors, (43), 2 states have call predecessors, (43), 2 states have call successors, (43) [2024-11-18 23:49:47,909 INFO L276 IsEmpty]: Start isEmpty. Operand 975 states and 1581 transitions. [2024-11-18 23:49:47,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 298 [2024-11-18 23:49:47,914 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:49:47,914 INFO L215 NwaCegarLoop]: trace histogram [43, 43, 43, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:49:47,915 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-18 23:49:47,915 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:49:47,915 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:49:47,916 INFO L85 PathProgramCache]: Analyzing trace with hash -241309382, now seen corresponding path program 1 times [2024-11-18 23:49:47,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:49:47,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615149430] [2024-11-18 23:49:47,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:49:47,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:49:48,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:49:48,934 INFO L134 CoverageAnalysis]: Checked inductivity of 3612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3612 trivial. 0 not checked. [2024-11-18 23:49:48,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:49:48,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615149430] [2024-11-18 23:49:48,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1615149430] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:49:48,935 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 23:49:48,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 23:49:48,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58079379] [2024-11-18 23:49:48,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:49:48,936 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 23:49:48,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:49:48,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 23:49:48,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-18 23:49:48,937 INFO L87 Difference]: Start difference. First operand 975 states and 1581 transitions. Second operand has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 1 states have call successors, (43), 1 states have call predecessors, (43), 1 states have return successors, (43), 1 states have call predecessors, (43), 1 states have call successors, (43) [2024-11-18 23:49:49,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:49:49,229 INFO L93 Difference]: Finished difference Result 2567 states and 4129 transitions. [2024-11-18 23:49:49,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 23:49:49,231 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 1 states have call successors, (43), 1 states have call predecessors, (43), 1 states have return successors, (43), 1 states have call predecessors, (43), 1 states have call successors, (43) Word has length 297 [2024-11-18 23:49:49,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:49:49,240 INFO L225 Difference]: With dead ends: 2567 [2024-11-18 23:49:49,240 INFO L226 Difference]: Without dead ends: 1595 [2024-11-18 23:49:49,244 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-11-18 23:49:49,246 INFO L432 NwaCegarLoop]: 305 mSDtfsCounter, 165 mSDsluCounter, 801 mSDsCounter, 0 mSdLazyCounter, 155 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 1106 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 23:49:49,246 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [165 Valid, 1106 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 155 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 23:49:49,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1595 states. [2024-11-18 23:49:49,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1595 to 1589. [2024-11-18 23:49:49,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1589 states, 1364 states have (on average 1.5454545454545454) internal successors, (2108), 1370 states have internal predecessors, (2108), 216 states have call successors, (216), 8 states have call predecessors, (216), 8 states have return successors, (216), 210 states have call predecessors, (216), 216 states have call successors, (216) [2024-11-18 23:49:49,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1589 states to 1589 states and 2540 transitions. [2024-11-18 23:49:49,340 INFO L78 Accepts]: Start accepts. Automaton has 1589 states and 2540 transitions. Word has length 297 [2024-11-18 23:49:49,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:49:49,341 INFO L471 AbstractCegarLoop]: Abstraction has 1589 states and 2540 transitions. [2024-11-18 23:49:49,341 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 1 states have call successors, (43), 1 states have call predecessors, (43), 1 states have return successors, (43), 1 states have call predecessors, (43), 1 states have call successors, (43) [2024-11-18 23:49:49,342 INFO L276 IsEmpty]: Start isEmpty. Operand 1589 states and 2540 transitions. [2024-11-18 23:49:49,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2024-11-18 23:49:49,348 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:49:49,349 INFO L215 NwaCegarLoop]: trace histogram [43, 43, 43, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:49:49,349 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-18 23:49:49,350 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:49:49,350 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:49:49,350 INFO L85 PathProgramCache]: Analyzing trace with hash 1272383188, now seen corresponding path program 1 times [2024-11-18 23:49:49,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:49:49,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550841059] [2024-11-18 23:49:49,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:49:49,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:49:49,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:49:50,458 INFO L134 CoverageAnalysis]: Checked inductivity of 3612 backedges. 9 proven. 117 refuted. 0 times theorem prover too weak. 3486 trivial. 0 not checked. [2024-11-18 23:49:50,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:49:50,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550841059] [2024-11-18 23:49:50,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1550841059] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 23:49:50,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [211026460] [2024-11-18 23:49:50,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:49:50,460 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 23:49:50,460 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 23:49:50,462 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 23:49:50,463 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 23:49:50,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:49:50,689 INFO L255 TraceCheckSpWp]: Trace formula consists of 721 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-18 23:49:50,700 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 23:49:50,993 INFO L134 CoverageAnalysis]: Checked inductivity of 3612 backedges. 1836 proven. 57 refuted. 0 times theorem prover too weak. 1719 trivial. 0 not checked. [2024-11-18 23:49:50,995 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 23:49:51,304 INFO L134 CoverageAnalysis]: Checked inductivity of 3612 backedges. 69 proven. 57 refuted. 0 times theorem prover too weak. 3486 trivial. 0 not checked. [2024-11-18 23:49:51,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [211026460] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 23:49:51,305 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 23:49:51,305 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5, 5] total 12 [2024-11-18 23:49:51,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172974398] [2024-11-18 23:49:51,306 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 23:49:51,307 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-18 23:49:51,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:49:51,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-18 23:49:51,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-11-18 23:49:51,308 INFO L87 Difference]: Start difference. First operand 1589 states and 2540 transitions. Second operand has 12 states, 11 states have (on average 12.181818181818182) internal successors, (134), 12 states have internal predecessors, (134), 5 states have call successors, (105), 2 states have call predecessors, (105), 4 states have return successors, (106), 4 states have call predecessors, (106), 5 states have call successors, (106) [2024-11-18 23:49:52,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:49:52,112 INFO L93 Difference]: Finished difference Result 2194 states and 3495 transitions. [2024-11-18 23:49:52,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-18 23:49:52,114 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 12.181818181818182) internal successors, (134), 12 states have internal predecessors, (134), 5 states have call successors, (105), 2 states have call predecessors, (105), 4 states have return successors, (106), 4 states have call predecessors, (106), 5 states have call successors, (106) Word has length 298 [2024-11-18 23:49:52,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:49:52,118 INFO L225 Difference]: With dead ends: 2194 [2024-11-18 23:49:52,118 INFO L226 Difference]: Without dead ends: 608 [2024-11-18 23:49:52,121 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 617 GetRequests, 594 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=169, Invalid=383, Unknown=0, NotChecked=0, Total=552 [2024-11-18 23:49:52,123 INFO L432 NwaCegarLoop]: 215 mSDtfsCounter, 787 mSDsluCounter, 513 mSDsCounter, 0 mSdLazyCounter, 474 mSolverCounterSat, 262 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 787 SdHoareTripleChecker+Valid, 728 SdHoareTripleChecker+Invalid, 736 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 262 IncrementalHoareTripleChecker+Valid, 474 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-18 23:49:52,124 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [787 Valid, 728 Invalid, 736 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [262 Valid, 474 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-18 23:49:52,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 608 states. [2024-11-18 23:49:52,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 608 to 602. [2024-11-18 23:49:52,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 602 states, 531 states have (on average 1.5442561205273069) internal successors, (820), 532 states have internal predecessors, (820), 64 states have call successors, (64), 6 states have call predecessors, (64), 6 states have return successors, (64), 63 states have call predecessors, (64), 64 states have call successors, (64) [2024-11-18 23:49:52,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 602 states to 602 states and 948 transitions. [2024-11-18 23:49:52,161 INFO L78 Accepts]: Start accepts. Automaton has 602 states and 948 transitions. Word has length 298 [2024-11-18 23:49:52,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:49:52,162 INFO L471 AbstractCegarLoop]: Abstraction has 602 states and 948 transitions. [2024-11-18 23:49:52,163 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 12.181818181818182) internal successors, (134), 12 states have internal predecessors, (134), 5 states have call successors, (105), 2 states have call predecessors, (105), 4 states have return successors, (106), 4 states have call predecessors, (106), 5 states have call successors, (106) [2024-11-18 23:49:52,164 INFO L276 IsEmpty]: Start isEmpty. Operand 602 states and 948 transitions. [2024-11-18 23:49:52,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2024-11-18 23:49:52,168 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:49:52,168 INFO L215 NwaCegarLoop]: trace histogram [43, 43, 43, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:49:52,187 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-18 23:49:52,368 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 23:49:52,370 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:49:52,370 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:49:52,370 INFO L85 PathProgramCache]: Analyzing trace with hash -747348445, now seen corresponding path program 1 times [2024-11-18 23:49:52,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:49:52,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [496028024] [2024-11-18 23:49:52,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:49:52,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:49:52,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:49:53,141 INFO L134 CoverageAnalysis]: Checked inductivity of 3612 backedges. 63 proven. 63 refuted. 0 times theorem prover too weak. 3486 trivial. 0 not checked. [2024-11-18 23:49:53,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:49:53,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [496028024] [2024-11-18 23:49:53,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [496028024] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 23:49:53,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1411242715] [2024-11-18 23:49:53,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:49:53,143 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 23:49:53,143 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 23:49:53,145 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 23:49:53,146 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 23:49:53,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:49:53,377 INFO L255 TraceCheckSpWp]: Trace formula consists of 724 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-18 23:49:53,387 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 23:49:54,133 INFO L134 CoverageAnalysis]: Checked inductivity of 3612 backedges. 2247 proven. 63 refuted. 0 times theorem prover too weak. 1302 trivial. 0 not checked. [2024-11-18 23:49:54,133 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 23:49:54,549 INFO L134 CoverageAnalysis]: Checked inductivity of 3612 backedges. 63 proven. 63 refuted. 0 times theorem prover too weak. 3486 trivial. 0 not checked. [2024-11-18 23:49:54,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1411242715] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 23:49:54,550 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 23:49:54,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2024-11-18 23:49:54,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995555823] [2024-11-18 23:49:54,550 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 23:49:54,552 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-18 23:49:54,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:49:54,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-18 23:49:54,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2024-11-18 23:49:54,554 INFO L87 Difference]: Start difference. First operand 602 states and 948 transitions. Second operand has 13 states, 13 states have (on average 15.615384615384615) internal successors, (203), 13 states have internal predecessors, (203), 6 states have call successors, (115), 3 states have call predecessors, (115), 6 states have return successors, (115), 6 states have call predecessors, (115), 6 states have call successors, (115) [2024-11-18 23:49:54,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:49:54,932 INFO L93 Difference]: Finished difference Result 1211 states and 1902 transitions. [2024-11-18 23:49:54,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 23:49:54,933 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 15.615384615384615) internal successors, (203), 13 states have internal predecessors, (203), 6 states have call successors, (115), 3 states have call predecessors, (115), 6 states have return successors, (115), 6 states have call predecessors, (115), 6 states have call successors, (115) Word has length 302 [2024-11-18 23:49:54,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:49:54,938 INFO L225 Difference]: With dead ends: 1211 [2024-11-18 23:49:54,938 INFO L226 Difference]: Without dead ends: 612 [2024-11-18 23:49:54,940 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 611 GetRequests, 597 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=85, Invalid=155, Unknown=0, NotChecked=0, Total=240 [2024-11-18 23:49:54,941 INFO L432 NwaCegarLoop]: 222 mSDtfsCounter, 180 mSDsluCounter, 362 mSDsCounter, 0 mSdLazyCounter, 301 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 201 SdHoareTripleChecker+Valid, 584 SdHoareTripleChecker+Invalid, 309 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 301 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-18 23:49:54,941 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [201 Valid, 584 Invalid, 309 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 301 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-18 23:49:54,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 612 states. [2024-11-18 23:49:54,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 612 to 606. [2024-11-18 23:49:54,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 606 states, 534 states have (on average 1.5262172284644195) internal successors, (815), 535 states have internal predecessors, (815), 64 states have call successors, (64), 7 states have call predecessors, (64), 7 states have return successors, (64), 63 states have call predecessors, (64), 64 states have call successors, (64) [2024-11-18 23:49:54,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 606 states to 606 states and 943 transitions. [2024-11-18 23:49:54,992 INFO L78 Accepts]: Start accepts. Automaton has 606 states and 943 transitions. Word has length 302 [2024-11-18 23:49:54,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:49:54,992 INFO L471 AbstractCegarLoop]: Abstraction has 606 states and 943 transitions. [2024-11-18 23:49:54,993 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 15.615384615384615) internal successors, (203), 13 states have internal predecessors, (203), 6 states have call successors, (115), 3 states have call predecessors, (115), 6 states have return successors, (115), 6 states have call predecessors, (115), 6 states have call successors, (115) [2024-11-18 23:49:54,993 INFO L276 IsEmpty]: Start isEmpty. Operand 606 states and 943 transitions. [2024-11-18 23:49:54,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 304 [2024-11-18 23:49:54,997 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:49:54,998 INFO L215 NwaCegarLoop]: trace histogram [43, 43, 43, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:49:55,018 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 23:49:55,201 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 23:49:55,202 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:49:55,203 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:49:55,203 INFO L85 PathProgramCache]: Analyzing trace with hash -1668782551, now seen corresponding path program 1 times [2024-11-18 23:49:55,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:49:55,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935724777] [2024-11-18 23:49:55,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:49:55,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:49:55,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:49:56,304 INFO L134 CoverageAnalysis]: Checked inductivity of 3612 backedges. 63 proven. 63 refuted. 0 times theorem prover too weak. 3486 trivial. 0 not checked. [2024-11-18 23:49:56,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:49:56,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1935724777] [2024-11-18 23:49:56,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1935724777] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 23:49:56,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [265056787] [2024-11-18 23:49:56,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:49:56,305 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 23:49:56,305 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 23:49:56,307 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 23:49:56,308 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 23:49:56,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:49:56,550 INFO L255 TraceCheckSpWp]: Trace formula consists of 724 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-18 23:49:56,555 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 23:49:57,435 INFO L134 CoverageAnalysis]: Checked inductivity of 3612 backedges. 2022 proven. 216 refuted. 0 times theorem prover too weak. 1374 trivial. 0 not checked. [2024-11-18 23:49:57,436 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 23:49:58,587 INFO L134 CoverageAnalysis]: Checked inductivity of 3612 backedges. 144 proven. 225 refuted. 0 times theorem prover too weak. 3243 trivial. 0 not checked. [2024-11-18 23:49:58,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [265056787] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 23:49:58,588 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 23:49:58,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 12, 12] total 25 [2024-11-18 23:49:58,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570716305] [2024-11-18 23:49:58,588 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 23:49:58,589 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-18 23:49:58,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:49:58,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-18 23:49:58,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=471, Unknown=0, NotChecked=0, Total=600 [2024-11-18 23:49:58,592 INFO L87 Difference]: Start difference. First operand 606 states and 943 transitions. Second operand has 25 states, 24 states have (on average 8.75) internal successors, (210), 23 states have internal predecessors, (210), 9 states have call successors, (97), 4 states have call predecessors, (97), 9 states have return successors, (99), 9 states have call predecessors, (99), 9 states have call successors, (99) [2024-11-18 23:50:02,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:50:02,299 INFO L93 Difference]: Finished difference Result 2445 states and 3703 transitions. [2024-11-18 23:50:02,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2024-11-18 23:50:02,300 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 8.75) internal successors, (210), 23 states have internal predecessors, (210), 9 states have call successors, (97), 4 states have call predecessors, (97), 9 states have return successors, (99), 9 states have call predecessors, (99), 9 states have call successors, (99) Word has length 303 [2024-11-18 23:50:02,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:50:02,309 INFO L225 Difference]: With dead ends: 2445 [2024-11-18 23:50:02,310 INFO L226 Difference]: Without dead ends: 1842 [2024-11-18 23:50:02,314 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 688 GetRequests, 594 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2923 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1985, Invalid=7135, Unknown=0, NotChecked=0, Total=9120 [2024-11-18 23:50:02,315 INFO L432 NwaCegarLoop]: 414 mSDtfsCounter, 2907 mSDsluCounter, 2017 mSDsCounter, 0 mSdLazyCounter, 2159 mSolverCounterSat, 1013 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2907 SdHoareTripleChecker+Valid, 2431 SdHoareTripleChecker+Invalid, 3172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1013 IncrementalHoareTripleChecker+Valid, 2159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-11-18 23:50:02,315 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2907 Valid, 2431 Invalid, 3172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1013 Valid, 2159 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-11-18 23:50:02,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1842 states. [2024-11-18 23:50:02,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1842 to 710. [2024-11-18 23:50:02,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 710 states, 656 states have (on average 1.5426829268292683) internal successors, (1012), 656 states have internal predecessors, (1012), 43 states have call successors, (43), 10 states have call predecessors, (43), 10 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) [2024-11-18 23:50:02,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 710 states to 710 states and 1098 transitions. [2024-11-18 23:50:02,400 INFO L78 Accepts]: Start accepts. Automaton has 710 states and 1098 transitions. Word has length 303 [2024-11-18 23:50:02,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:50:02,401 INFO L471 AbstractCegarLoop]: Abstraction has 710 states and 1098 transitions. [2024-11-18 23:50:02,402 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 8.75) internal successors, (210), 23 states have internal predecessors, (210), 9 states have call successors, (97), 4 states have call predecessors, (97), 9 states have return successors, (99), 9 states have call predecessors, (99), 9 states have call successors, (99) [2024-11-18 23:50:02,402 INFO L276 IsEmpty]: Start isEmpty. Operand 710 states and 1098 transitions. [2024-11-18 23:50:02,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 304 [2024-11-18 23:50:02,406 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:50:02,406 INFO L215 NwaCegarLoop]: trace histogram [43, 43, 43, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:50:02,425 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 23:50:02,610 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 23:50:02,611 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:50:02,612 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:50:02,612 INFO L85 PathProgramCache]: Analyzing trace with hash 321529765, now seen corresponding path program 1 times [2024-11-18 23:50:02,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:50:02,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285994637] [2024-11-18 23:50:02,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:50:02,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:50:03,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:50:04,524 INFO L134 CoverageAnalysis]: Checked inductivity of 3612 backedges. 366 proven. 300 refuted. 0 times theorem prover too weak. 2946 trivial. 0 not checked. [2024-11-18 23:50:04,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:50:04,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [285994637] [2024-11-18 23:50:04,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [285994637] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 23:50:04,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [369960196] [2024-11-18 23:50:04,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:50:04,528 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 23:50:04,528 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 23:50:04,530 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 23:50:04,531 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 23:50:04,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:50:04,762 INFO L255 TraceCheckSpWp]: Trace formula consists of 721 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-11-18 23:50:04,767 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 23:50:06,241 INFO L134 CoverageAnalysis]: Checked inductivity of 3612 backedges. 2381 proven. 300 refuted. 0 times theorem prover too weak. 931 trivial. 0 not checked. [2024-11-18 23:50:06,242 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 23:50:06,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [369960196] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 23:50:06,972 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-18 23:50:06,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 21] total 26 [2024-11-18 23:50:06,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322269179] [2024-11-18 23:50:06,972 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-18 23:50:06,973 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-18 23:50:06,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:50:06,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-18 23:50:06,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=322, Invalid=1084, Unknown=0, NotChecked=0, Total=1406 [2024-11-18 23:50:06,975 INFO L87 Difference]: Start difference. First operand 710 states and 1098 transitions. Second operand has 26 states, 24 states have (on average 6.541666666666667) internal successors, (157), 21 states have internal predecessors, (157), 11 states have call successors, (68), 7 states have call predecessors, (68), 9 states have return successors, (68), 11 states have call predecessors, (68), 11 states have call successors, (68) [2024-11-18 23:50:08,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:50:08,823 INFO L93 Difference]: Finished difference Result 1382 states and 2046 transitions. [2024-11-18 23:50:08,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2024-11-18 23:50:08,824 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 24 states have (on average 6.541666666666667) internal successors, (157), 21 states have internal predecessors, (157), 11 states have call successors, (68), 7 states have call predecessors, (68), 9 states have return successors, (68), 11 states have call predecessors, (68), 11 states have call successors, (68) Word has length 303 [2024-11-18 23:50:08,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:50:08,831 INFO L225 Difference]: With dead ends: 1382 [2024-11-18 23:50:08,832 INFO L226 Difference]: Without dead ends: 675 [2024-11-18 23:50:08,837 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 545 GetRequests, 485 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 863 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=961, Invalid=2821, Unknown=0, NotChecked=0, Total=3782 [2024-11-18 23:50:08,838 INFO L432 NwaCegarLoop]: 360 mSDtfsCounter, 1144 mSDsluCounter, 1635 mSDsCounter, 0 mSdLazyCounter, 1843 mSolverCounterSat, 320 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1162 SdHoareTripleChecker+Valid, 1995 SdHoareTripleChecker+Invalid, 2163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 320 IncrementalHoareTripleChecker+Valid, 1843 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-18 23:50:08,838 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1162 Valid, 1995 Invalid, 2163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [320 Valid, 1843 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-18 23:50:08,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 675 states. [2024-11-18 23:50:08,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 675 to 335. [2024-11-18 23:50:08,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 335 states, 276 states have (on average 1.3876811594202898) internal successors, (383), 276 states have internal predecessors, (383), 43 states have call successors, (43), 15 states have call predecessors, (43), 15 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) [2024-11-18 23:50:08,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 469 transitions. [2024-11-18 23:50:08,894 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 469 transitions. Word has length 303 [2024-11-18 23:50:08,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:50:08,894 INFO L471 AbstractCegarLoop]: Abstraction has 335 states and 469 transitions. [2024-11-18 23:50:08,895 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 24 states have (on average 6.541666666666667) internal successors, (157), 21 states have internal predecessors, (157), 11 states have call successors, (68), 7 states have call predecessors, (68), 9 states have return successors, (68), 11 states have call predecessors, (68), 11 states have call successors, (68) [2024-11-18 23:50:08,897 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 469 transitions. [2024-11-18 23:50:08,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2024-11-18 23:50:08,900 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:50:08,900 INFO L215 NwaCegarLoop]: trace histogram [43, 43, 43, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:50:08,918 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-18 23:50:09,100 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,SelfDestructingSolverStorable9 [2024-11-18 23:50:09,101 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:50:09,104 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:50:09,105 INFO L85 PathProgramCache]: Analyzing trace with hash 67142668, now seen corresponding path program 1 times [2024-11-18 23:50:09,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:50:09,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618635657] [2024-11-18 23:50:09,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:50:09,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:50:09,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:50:09,337 INFO L134 CoverageAnalysis]: Checked inductivity of 3612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3612 trivial. 0 not checked. [2024-11-18 23:50:09,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:50:09,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [618635657] [2024-11-18 23:50:09,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [618635657] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:50:09,341 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 23:50:09,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 23:50:09,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026989888] [2024-11-18 23:50:09,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:50:09,342 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 23:50:09,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:50:09,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 23:50:09,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 23:50:09,343 INFO L87 Difference]: Start difference. First operand 335 states and 469 transitions. Second operand has 5 states, 5 states have (on average 18.6) internal successors, (93), 5 states have internal predecessors, (93), 1 states have call successors, (43), 1 states have call predecessors, (43), 1 states have return successors, (43), 1 states have call predecessors, (43), 1 states have call successors, (43) [2024-11-18 23:50:09,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:50:09,640 INFO L93 Difference]: Finished difference Result 838 states and 1157 transitions. [2024-11-18 23:50:09,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 23:50:09,641 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 5 states have internal predecessors, (93), 1 states have call successors, (43), 1 states have call predecessors, (43), 1 states have return successors, (43), 1 states have call predecessors, (43), 1 states have call successors, (43) Word has length 305 [2024-11-18 23:50:09,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:50:09,644 INFO L225 Difference]: With dead ends: 838 [2024-11-18 23:50:09,644 INFO L226 Difference]: Without dead ends: 484 [2024-11-18 23:50:09,646 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-18 23:50:09,646 INFO L432 NwaCegarLoop]: 266 mSDtfsCounter, 396 mSDsluCounter, 505 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 174 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 396 SdHoareTripleChecker+Valid, 771 SdHoareTripleChecker+Invalid, 220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 174 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 23:50:09,646 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [396 Valid, 771 Invalid, 220 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [174 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 23:50:09,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 484 states. [2024-11-18 23:50:09,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 484 to 335. [2024-11-18 23:50:09,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 335 states, 276 states have (on average 1.3804347826086956) internal successors, (381), 276 states have internal predecessors, (381), 43 states have call successors, (43), 15 states have call predecessors, (43), 15 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) [2024-11-18 23:50:09,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 467 transitions. [2024-11-18 23:50:09,712 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 467 transitions. Word has length 305 [2024-11-18 23:50:09,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:50:09,713 INFO L471 AbstractCegarLoop]: Abstraction has 335 states and 467 transitions. [2024-11-18 23:50:09,713 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 5 states have internal predecessors, (93), 1 states have call successors, (43), 1 states have call predecessors, (43), 1 states have return successors, (43), 1 states have call predecessors, (43), 1 states have call successors, (43) [2024-11-18 23:50:09,713 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 467 transitions. [2024-11-18 23:50:09,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2024-11-18 23:50:09,715 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:50:09,715 INFO L215 NwaCegarLoop]: trace histogram [43, 43, 43, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:50:09,716 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-18 23:50:09,716 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:50:09,716 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:50:09,716 INFO L85 PathProgramCache]: Analyzing trace with hash 2031169269, now seen corresponding path program 1 times [2024-11-18 23:50:09,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:50:09,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384375350] [2024-11-18 23:50:09,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:50:09,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:50:10,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:50:10,388 INFO L134 CoverageAnalysis]: Checked inductivity of 3612 backedges. 93 proven. 33 refuted. 0 times theorem prover too weak. 3486 trivial. 0 not checked. [2024-11-18 23:50:10,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:50:10,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384375350] [2024-11-18 23:50:10,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [384375350] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 23:50:10,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1717706381] [2024-11-18 23:50:10,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:50:10,389 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 23:50:10,389 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 23:50:10,391 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 23:50:10,392 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 23:50:10,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:50:10,612 INFO L255 TraceCheckSpWp]: Trace formula consists of 726 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-18 23:50:10,618 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 23:50:11,079 INFO L134 CoverageAnalysis]: Checked inductivity of 3612 backedges. 2269 proven. 33 refuted. 0 times theorem prover too weak. 1310 trivial. 0 not checked. [2024-11-18 23:50:11,080 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 23:50:11,417 INFO L134 CoverageAnalysis]: Checked inductivity of 3612 backedges. 93 proven. 33 refuted. 0 times theorem prover too weak. 3486 trivial. 0 not checked. [2024-11-18 23:50:11,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1717706381] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 23:50:11,417 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 23:50:11,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2024-11-18 23:50:11,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462568911] [2024-11-18 23:50:11,418 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 23:50:11,419 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-18 23:50:11,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:50:11,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-18 23:50:11,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2024-11-18 23:50:11,422 INFO L87 Difference]: Start difference. First operand 335 states and 467 transitions. Second operand has 13 states, 13 states have (on average 15.307692307692308) internal successors, (199), 13 states have internal predecessors, (199), 6 states have call successors, (111), 3 states have call predecessors, (111), 6 states have return successors, (111), 6 states have call predecessors, (111), 6 states have call successors, (111) [2024-11-18 23:50:11,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:50:11,884 INFO L93 Difference]: Finished difference Result 675 states and 938 transitions. [2024-11-18 23:50:11,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 23:50:11,885 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 15.307692307692308) internal successors, (199), 13 states have internal predecessors, (199), 6 states have call successors, (111), 3 states have call predecessors, (111), 6 states have return successors, (111), 6 states have call predecessors, (111), 6 states have call successors, (111) Word has length 306 [2024-11-18 23:50:11,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:50:11,888 INFO L225 Difference]: With dead ends: 675 [2024-11-18 23:50:11,888 INFO L226 Difference]: Without dead ends: 343 [2024-11-18 23:50:11,890 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 619 GetRequests, 605 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=86, Invalid=154, Unknown=0, NotChecked=0, Total=240 [2024-11-18 23:50:11,890 INFO L432 NwaCegarLoop]: 196 mSDtfsCounter, 445 mSDsluCounter, 456 mSDsCounter, 0 mSdLazyCounter, 429 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 476 SdHoareTripleChecker+Valid, 652 SdHoareTripleChecker+Invalid, 516 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 429 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-18 23:50:11,891 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [476 Valid, 652 Invalid, 516 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 429 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-18 23:50:11,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2024-11-18 23:50:11,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 339. [2024-11-18 23:50:11,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 339 states, 279 states have (on average 1.3584229390681004) internal successors, (379), 279 states have internal predecessors, (379), 43 states have call successors, (43), 16 states have call predecessors, (43), 16 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) [2024-11-18 23:50:11,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 339 states to 339 states and 465 transitions. [2024-11-18 23:50:11,944 INFO L78 Accepts]: Start accepts. Automaton has 339 states and 465 transitions. Word has length 306 [2024-11-18 23:50:11,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:50:11,945 INFO L471 AbstractCegarLoop]: Abstraction has 339 states and 465 transitions. [2024-11-18 23:50:11,946 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 15.307692307692308) internal successors, (199), 13 states have internal predecessors, (199), 6 states have call successors, (111), 3 states have call predecessors, (111), 6 states have return successors, (111), 6 states have call predecessors, (111), 6 states have call successors, (111) [2024-11-18 23:50:11,946 INFO L276 IsEmpty]: Start isEmpty. Operand 339 states and 465 transitions. [2024-11-18 23:50:11,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 308 [2024-11-18 23:50:11,948 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:50:11,949 INFO L215 NwaCegarLoop]: trace histogram [43, 43, 43, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:50:11,965 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-18 23:50:12,149 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 23:50:12,150 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:50:12,150 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:50:12,151 INFO L85 PathProgramCache]: Analyzing trace with hash -242606859, now seen corresponding path program 1 times [2024-11-18 23:50:12,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:50:12,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839983931] [2024-11-18 23:50:12,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:50:12,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:50:12,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:50:14,230 INFO L134 CoverageAnalysis]: Checked inductivity of 3612 backedges. 189 proven. 171 refuted. 0 times theorem prover too weak. 3252 trivial. 0 not checked. [2024-11-18 23:50:14,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:50:14,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1839983931] [2024-11-18 23:50:14,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1839983931] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 23:50:14,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [239196695] [2024-11-18 23:50:14,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:50:14,231 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 23:50:14,231 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 23:50:14,233 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 23:50:14,234 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-18 23:50:14,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:50:14,456 INFO L255 TraceCheckSpWp]: Trace formula consists of 727 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-18 23:50:14,462 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 23:50:15,819 INFO L134 CoverageAnalysis]: Checked inductivity of 3612 backedges. 2737 proven. 240 refuted. 0 times theorem prover too weak. 635 trivial. 0 not checked. [2024-11-18 23:50:15,820 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 23:50:17,154 INFO L134 CoverageAnalysis]: Checked inductivity of 3612 backedges. 228 proven. 258 refuted. 0 times theorem prover too weak. 3126 trivial. 0 not checked. [2024-11-18 23:50:17,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [239196695] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 23:50:17,155 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 23:50:17,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 16, 16] total 40 [2024-11-18 23:50:17,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600120092] [2024-11-18 23:50:17,156 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 23:50:17,157 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2024-11-18 23:50:17,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:50:17,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2024-11-18 23:50:17,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=323, Invalid=1237, Unknown=0, NotChecked=0, Total=1560 [2024-11-18 23:50:17,159 INFO L87 Difference]: Start difference. First operand 339 states and 465 transitions. Second operand has 40 states, 38 states have (on average 6.184210526315789) internal successors, (235), 38 states have internal predecessors, (235), 15 states have call successors, (111), 6 states have call predecessors, (111), 14 states have return successors, (111), 14 states have call predecessors, (111), 15 states have call successors, (111) [2024-11-18 23:50:21,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:50:21,445 INFO L93 Difference]: Finished difference Result 1509 states and 2091 transitions. [2024-11-18 23:50:21,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2024-11-18 23:50:21,446 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 38 states have (on average 6.184210526315789) internal successors, (235), 38 states have internal predecessors, (235), 15 states have call successors, (111), 6 states have call predecessors, (111), 14 states have return successors, (111), 14 states have call predecessors, (111), 15 states have call successors, (111) Word has length 307 [2024-11-18 23:50:21,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:50:21,451 INFO L225 Difference]: With dead ends: 1509 [2024-11-18 23:50:21,451 INFO L226 Difference]: Without dead ends: 1173 [2024-11-18 23:50:21,455 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 695 GetRequests, 600 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2468 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=2324, Invalid=6988, Unknown=0, NotChecked=0, Total=9312 [2024-11-18 23:50:21,456 INFO L432 NwaCegarLoop]: 306 mSDtfsCounter, 2680 mSDsluCounter, 2482 mSDsCounter, 0 mSdLazyCounter, 3422 mSolverCounterSat, 755 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2695 SdHoareTripleChecker+Valid, 2788 SdHoareTripleChecker+Invalid, 4177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 755 IncrementalHoareTripleChecker+Valid, 3422 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2024-11-18 23:50:21,457 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2695 Valid, 2788 Invalid, 4177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [755 Valid, 3422 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2024-11-18 23:50:21,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1173 states. [2024-11-18 23:50:21,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1173 to 539. [2024-11-18 23:50:21,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 539 states, 468 states have (on average 1.3995726495726495) internal successors, (655), 469 states have internal predecessors, (655), 52 states have call successors, (52), 18 states have call predecessors, (52), 18 states have return successors, (52), 51 states have call predecessors, (52), 52 states have call successors, (52) [2024-11-18 23:50:21,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 539 states to 539 states and 759 transitions. [2024-11-18 23:50:21,527 INFO L78 Accepts]: Start accepts. Automaton has 539 states and 759 transitions. Word has length 307 [2024-11-18 23:50:21,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:50:21,528 INFO L471 AbstractCegarLoop]: Abstraction has 539 states and 759 transitions. [2024-11-18 23:50:21,528 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 38 states have (on average 6.184210526315789) internal successors, (235), 38 states have internal predecessors, (235), 15 states have call successors, (111), 6 states have call predecessors, (111), 14 states have return successors, (111), 14 states have call predecessors, (111), 15 states have call successors, (111) [2024-11-18 23:50:21,528 INFO L276 IsEmpty]: Start isEmpty. Operand 539 states and 759 transitions. [2024-11-18 23:50:21,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 308 [2024-11-18 23:50:21,530 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:50:21,530 INFO L215 NwaCegarLoop]: trace histogram [43, 43, 43, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:50:21,549 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-18 23:50:21,731 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 23:50:21,731 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:50:21,732 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:50:21,732 INFO L85 PathProgramCache]: Analyzing trace with hash -723687117, now seen corresponding path program 1 times [2024-11-18 23:50:21,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:50:21,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1166574295] [2024-11-18 23:50:21,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:50:21,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:50:22,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-18 23:50:22,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [776501251] [2024-11-18 23:50:22,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:50:22,156 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 23:50:22,157 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 23:50:22,158 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 23:50:22,160 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-18 23:50:22,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:50:22,524 INFO L255 TraceCheckSpWp]: Trace formula consists of 727 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-11-18 23:50:22,530 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 23:50:31,997 INFO L134 CoverageAnalysis]: Checked inductivity of 3612 backedges. 2039 proven. 372 refuted. 0 times theorem prover too weak. 1201 trivial. 0 not checked. [2024-11-18 23:50:31,997 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 23:50:39,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:50:39,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1166574295] [2024-11-18 23:50:39,481 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-18 23:50:39,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [776501251] [2024-11-18 23:50:39,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [776501251] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 23:50:39,481 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-18 23:50:39,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2024-11-18 23:50:39,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094792980] [2024-11-18 23:50:39,481 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-18 23:50:39,482 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-18 23:50:39,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:50:39,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-18 23:50:39,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=222, Invalid=707, Unknown=1, NotChecked=0, Total=930 [2024-11-18 23:50:39,484 INFO L87 Difference]: Start difference. First operand 539 states and 759 transitions. Second operand has 23 states, 23 states have (on average 5.173913043478261) internal successors, (119), 19 states have internal predecessors, (119), 7 states have call successors, (43), 7 states have call predecessors, (43), 9 states have return successors, (43), 7 states have call predecessors, (43), 7 states have call successors, (43) [2024-11-18 23:50:43,747 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-18 23:50:47,768 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0]