./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-5.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 803cd42f Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-5.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 4639c6b0fb22706997cf521ef330c95d8a0fb320eefb7d80395f3064e0e7914f --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-803cd42-m [2024-11-22 11:41:40,117 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-22 11:41:40,196 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-22 11:41:40,201 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-22 11:41:40,203 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-22 11:41:40,230 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-22 11:41:40,231 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-22 11:41:40,231 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-22 11:41:40,232 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-22 11:41:40,232 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-22 11:41:40,233 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-22 11:41:40,234 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-22 11:41:40,234 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-22 11:41:40,234 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-22 11:41:40,236 INFO L153 SettingsManager]: * Use SBE=true [2024-11-22 11:41:40,236 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-22 11:41:40,236 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-22 11:41:40,236 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-22 11:41:40,236 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-22 11:41:40,237 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-22 11:41:40,237 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-22 11:41:40,237 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-22 11:41:40,237 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-22 11:41:40,238 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-22 11:41:40,240 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-22 11:41:40,240 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-22 11:41:40,241 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-22 11:41:40,241 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-22 11:41:40,241 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-22 11:41:40,241 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-22 11:41:40,241 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-22 11:41:40,241 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-22 11:41:40,242 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 11:41:40,242 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-22 11:41:40,242 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-22 11:41:40,242 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-22 11:41:40,242 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-22 11:41:40,242 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-22 11:41:40,242 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-22 11:41:40,242 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-22 11:41:40,243 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-22 11:41:40,243 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-22 11:41:40,243 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4639c6b0fb22706997cf521ef330c95d8a0fb320eefb7d80395f3064e0e7914f [2024-11-22 11:41:40,437 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-22 11:41:40,477 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-22 11:41:40,482 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-22 11:41:40,487 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-22 11:41:40,488 INFO L274 PluginConnector]: CDTParser initialized [2024-11-22 11:41:40,489 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-5.i [2024-11-22 11:41:41,900 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-22 11:41:42,093 INFO L384 CDTParser]: Found 1 translation units. [2024-11-22 11:41:42,093 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-5.i [2024-11-22 11:41:42,105 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9be080ce3/62d449334dab4a75a28fb796cad377ba/FLAG593e3965a [2024-11-22 11:41:42,454 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9be080ce3/62d449334dab4a75a28fb796cad377ba [2024-11-22 11:41:42,456 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-22 11:41:42,457 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-22 11:41:42,458 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-22 11:41:42,458 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-22 11:41:42,464 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-22 11:41:42,465 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 11:41:42" (1/1) ... [2024-11-22 11:41:42,466 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@46257276 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:41:42, skipping insertion in model container [2024-11-22 11:41:42,466 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 11:41:42" (1/1) ... [2024-11-22 11:41:42,497 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-22 11:41:42,672 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-5.i[915,928] [2024-11-22 11:41:42,851 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 11:41:42,871 INFO L200 MainTranslator]: Completed pre-run [2024-11-22 11:41:42,880 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-5.i[915,928] [2024-11-22 11:41:42,919 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 11:41:42,940 INFO L204 MainTranslator]: Completed translation [2024-11-22 11:41:42,940 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:41:42 WrapperNode [2024-11-22 11:41:42,940 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-22 11:41:42,941 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-22 11:41:42,945 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-22 11:41:42,945 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-22 11:41:42,955 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:41:42" (1/1) ... [2024-11-22 11:41:42,976 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:41:42" (1/1) ... [2024-11-22 11:41:43,038 INFO L138 Inliner]: procedures = 26, calls = 48, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 415 [2024-11-22 11:41:43,038 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-22 11:41:43,039 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-22 11:41:43,039 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-22 11:41:43,039 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-22 11:41:43,047 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:41:42" (1/1) ... [2024-11-22 11:41:43,048 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:41:42" (1/1) ... [2024-11-22 11:41:43,056 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:41:42" (1/1) ... [2024-11-22 11:41:43,093 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]. [2024-11-22 11:41:43,093 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:41:42" (1/1) ... [2024-11-22 11:41:43,093 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:41:42" (1/1) ... [2024-11-22 11:41:43,119 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:41:42" (1/1) ... [2024-11-22 11:41:43,127 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:41:42" (1/1) ... [2024-11-22 11:41:43,136 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:41:42" (1/1) ... [2024-11-22 11:41:43,148 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:41:42" (1/1) ... [2024-11-22 11:41:43,159 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-22 11:41:43,160 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-22 11:41:43,160 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-22 11:41:43,160 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-22 11:41:43,161 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:41:42" (1/1) ... [2024-11-22 11:41:43,165 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 11:41:43,173 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 11:41:43,191 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) [2024-11-22 11:41:43,200 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 [2024-11-22 11:41:43,234 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-22 11:41:43,234 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-22 11:41:43,235 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-22 11:41:43,235 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-22 11:41:43,235 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-22 11:41:43,235 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-22 11:41:43,316 INFO L238 CfgBuilder]: Building ICFG [2024-11-22 11:41:43,318 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-22 11:41:44,054 INFO L? ?]: Removed 49 outVars from TransFormulas that were not future-live. [2024-11-22 11:41:44,054 INFO L287 CfgBuilder]: Performing block encoding [2024-11-22 11:41:44,070 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-22 11:41:44,070 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-22 11:41:44,071 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 11:41:44 BoogieIcfgContainer [2024-11-22 11:41:44,071 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-22 11:41:44,074 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-22 11:41:44,074 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-22 11:41:44,077 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-22 11:41:44,077 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 11:41:42" (1/3) ... [2024-11-22 11:41:44,077 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c67aebe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 11:41:44, skipping insertion in model container [2024-11-22 11:41:44,077 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:41:42" (2/3) ... [2024-11-22 11:41:44,078 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c67aebe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 11:41:44, skipping insertion in model container [2024-11-22 11:41:44,078 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 11:41:44" (3/3) ... [2024-11-22 11:41:44,080 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount250_file-5.i [2024-11-22 11:41:44,093 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-22 11:41:44,093 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-22 11:41:44,153 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-22 11:41:44,162 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;@40cc572b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-22 11:41:44,162 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-22 11:41:44,167 INFO L276 IsEmpty]: Start isEmpty. Operand has 169 states, 131 states have (on average 1.5419847328244274) internal successors, (202), 132 states have internal predecessors, (202), 35 states have call successors, (35), 1 states have call predecessors, (35), 1 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2024-11-22 11:41:44,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2024-11-22 11:41:44,182 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 11:41:44,183 INFO L215 NwaCegarLoop]: trace histogram [35, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 11:41:44,184 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 11:41:44,188 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 11:41:44,189 INFO L85 PathProgramCache]: Analyzing trace with hash 1525575319, now seen corresponding path program 1 times [2024-11-22 11:41:44,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 11:41:44,196 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716163316] [2024-11-22 11:41:44,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:41:44,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 11:41:44,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:41:44,607 INFO L134 CoverageAnalysis]: Checked inductivity of 2380 backedges. 0 proven. 68 refuted. 0 times theorem prover too weak. 2312 trivial. 0 not checked. [2024-11-22 11:41:44,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 11:41:44,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716163316] [2024-11-22 11:41:44,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1716163316] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 11:41:44,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [198321264] [2024-11-22 11:41:44,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:41:44,610 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 11:41:44,610 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 11:41:44,613 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) [2024-11-22 11:41:44,614 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-22 11:41:44,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:41:44,863 INFO L255 TraceCheckSpWp]: Trace formula consists of 610 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-22 11:41:44,871 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 11:41:44,896 INFO L134 CoverageAnalysis]: Checked inductivity of 2380 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 2312 trivial. 0 not checked. [2024-11-22 11:41:44,897 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 11:41:44,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [198321264] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 11:41:44,897 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 11:41:44,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-22 11:41:44,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972800117] [2024-11-22 11:41:44,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 11:41:44,903 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-22 11:41:44,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 11:41:44,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-22 11:41:44,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-22 11:41:44,923 INFO L87 Difference]: Start difference. First operand has 169 states, 131 states have (on average 1.5419847328244274) internal successors, (202), 132 states have internal predecessors, (202), 35 states have call successors, (35), 1 states have call predecessors, (35), 1 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) Second operand has 2 states, 2 states have (on average 39.5) internal successors, (79), 2 states have internal predecessors, (79), 2 states have call successors, (35), 2 states have call predecessors, (35), 1 states have return successors, (35), 1 states have call predecessors, (35), 2 states have call successors, (35) [2024-11-22 11:41:44,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 11:41:44,955 INFO L93 Difference]: Finished difference Result 331 states and 573 transitions. [2024-11-22 11:41:44,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-22 11:41:44,957 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 39.5) internal successors, (79), 2 states have internal predecessors, (79), 2 states have call successors, (35), 2 states have call predecessors, (35), 1 states have return successors, (35), 1 states have call predecessors, (35), 2 states have call successors, (35) Word has length 249 [2024-11-22 11:41:44,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 11:41:44,963 INFO L225 Difference]: With dead ends: 331 [2024-11-22 11:41:44,963 INFO L226 Difference]: Without dead ends: 165 [2024-11-22 11:41:44,967 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 250 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-22 11:41:44,969 INFO L432 NwaCegarLoop]: 263 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 263 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 11:41:44,970 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 263 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 11:41:44,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2024-11-22 11:41:45,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 165. [2024-11-22 11:41:45,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 128 states have (on average 1.5078125) internal successors, (193), 128 states have internal predecessors, (193), 35 states have call successors, (35), 1 states have call predecessors, (35), 1 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2024-11-22 11:41:45,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 263 transitions. [2024-11-22 11:41:45,035 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 263 transitions. Word has length 249 [2024-11-22 11:41:45,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 11:41:45,035 INFO L471 AbstractCegarLoop]: Abstraction has 165 states and 263 transitions. [2024-11-22 11:41:45,036 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 39.5) internal successors, (79), 2 states have internal predecessors, (79), 2 states have call successors, (35), 2 states have call predecessors, (35), 1 states have return successors, (35), 1 states have call predecessors, (35), 2 states have call successors, (35) [2024-11-22 11:41:45,036 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 263 transitions. [2024-11-22 11:41:45,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2024-11-22 11:41:45,039 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 11:41:45,039 INFO L215 NwaCegarLoop]: trace histogram [35, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 11:41:45,052 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-22 11:41:45,243 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 [2024-11-22 11:41:45,244 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 11:41:45,245 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 11:41:45,245 INFO L85 PathProgramCache]: Analyzing trace with hash -364092613, now seen corresponding path program 1 times [2024-11-22 11:41:45,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 11:41:45,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669581005] [2024-11-22 11:41:45,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:41:45,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 11:41:45,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:41:45,857 INFO L134 CoverageAnalysis]: Checked inductivity of 2380 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2380 trivial. 0 not checked. [2024-11-22 11:41:45,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 11:41:45,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669581005] [2024-11-22 11:41:45,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [669581005] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 11:41:45,858 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 11:41:45,858 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 11:41:45,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988175554] [2024-11-22 11:41:45,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 11:41:45,859 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 11:41:45,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 11:41:45,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 11:41:45,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-22 11:41:45,861 INFO L87 Difference]: Start difference. First operand 165 states and 263 transitions. Second operand has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 1 states have call successors, (35), 1 states have call predecessors, (35), 1 states have return successors, (35), 1 states have call predecessors, (35), 1 states have call successors, (35) [2024-11-22 11:41:46,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 11:41:46,218 INFO L93 Difference]: Finished difference Result 548 states and 885 transitions. [2024-11-22 11:41:46,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-22 11:41:46,219 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 1 states have call successors, (35), 1 states have call predecessors, (35), 1 states have return successors, (35), 1 states have call predecessors, (35), 1 states have call successors, (35) Word has length 249 [2024-11-22 11:41:46,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 11:41:46,224 INFO L225 Difference]: With dead ends: 548 [2024-11-22 11:41:46,224 INFO L226 Difference]: Without dead ends: 386 [2024-11-22 11:41:46,225 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-22 11:41:46,226 INFO L432 NwaCegarLoop]: 347 mSDtfsCounter, 292 mSDsluCounter, 764 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 292 SdHoareTripleChecker+Valid, 1111 SdHoareTripleChecker+Invalid, 251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-22 11:41:46,227 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [292 Valid, 1111 Invalid, 251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-22 11:41:46,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 386 states. [2024-11-22 11:41:46,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 386 to 243. [2024-11-22 11:41:46,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 170 states have (on average 1.4352941176470588) internal successors, (244), 170 states have internal predecessors, (244), 70 states have call successors, (70), 2 states have call predecessors, (70), 2 states have return successors, (70), 70 states have call predecessors, (70), 70 states have call successors, (70) [2024-11-22 11:41:46,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 384 transitions. [2024-11-22 11:41:46,250 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 384 transitions. Word has length 249 [2024-11-22 11:41:46,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 11:41:46,251 INFO L471 AbstractCegarLoop]: Abstraction has 243 states and 384 transitions. [2024-11-22 11:41:46,252 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 1 states have call successors, (35), 1 states have call predecessors, (35), 1 states have return successors, (35), 1 states have call predecessors, (35), 1 states have call successors, (35) [2024-11-22 11:41:46,252 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 384 transitions. [2024-11-22 11:41:46,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2024-11-22 11:41:46,254 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 11:41:46,254 INFO L215 NwaCegarLoop]: trace histogram [35, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 11:41:46,254 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-22 11:41:46,254 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 11:41:46,255 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 11:41:46,255 INFO L85 PathProgramCache]: Analyzing trace with hash 794722371, now seen corresponding path program 1 times [2024-11-22 11:41:46,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 11:41:46,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82176732] [2024-11-22 11:41:46,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:41:46,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 11:41:46,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:41:46,821 INFO L134 CoverageAnalysis]: Checked inductivity of 2380 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2380 trivial. 0 not checked. [2024-11-22 11:41:46,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 11:41:46,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [82176732] [2024-11-22 11:41:46,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [82176732] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 11:41:46,822 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 11:41:46,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-22 11:41:46,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358115796] [2024-11-22 11:41:46,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 11:41:46,823 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-22 11:41:46,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 11:41:46,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-22 11:41:46,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-22 11:41:46,824 INFO L87 Difference]: Start difference. First operand 243 states and 384 transitions. Second operand has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 1 states have call successors, (35), 1 states have call predecessors, (35), 1 states have return successors, (35), 1 states have call predecessors, (35), 1 states have call successors, (35) [2024-11-22 11:41:47,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 11:41:47,585 INFO L93 Difference]: Finished difference Result 568 states and 907 transitions. [2024-11-22 11:41:47,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-22 11:41:47,585 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 1 states have call successors, (35), 1 states have call predecessors, (35), 1 states have return successors, (35), 1 states have call predecessors, (35), 1 states have call successors, (35) Word has length 249 [2024-11-22 11:41:47,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 11:41:47,588 INFO L225 Difference]: With dead ends: 568 [2024-11-22 11:41:47,588 INFO L226 Difference]: Without dead ends: 406 [2024-11-22 11:41:47,589 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2024-11-22 11:41:47,590 INFO L432 NwaCegarLoop]: 290 mSDtfsCounter, 543 mSDsluCounter, 1326 mSDsCounter, 0 mSdLazyCounter, 672 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 543 SdHoareTripleChecker+Valid, 1616 SdHoareTripleChecker+Invalid, 788 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 672 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-22 11:41:47,590 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [543 Valid, 1616 Invalid, 788 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 672 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-22 11:41:47,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 406 states. [2024-11-22 11:41:47,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 406 to 343. [2024-11-22 11:41:47,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 343 states, 270 states have (on average 1.5148148148148148) internal successors, (409), 270 states have internal predecessors, (409), 70 states have call successors, (70), 2 states have call predecessors, (70), 2 states have return successors, (70), 70 states have call predecessors, (70), 70 states have call successors, (70) [2024-11-22 11:41:47,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 549 transitions. [2024-11-22 11:41:47,613 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 549 transitions. Word has length 249 [2024-11-22 11:41:47,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 11:41:47,614 INFO L471 AbstractCegarLoop]: Abstraction has 343 states and 549 transitions. [2024-11-22 11:41:47,614 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 1 states have call successors, (35), 1 states have call predecessors, (35), 1 states have return successors, (35), 1 states have call predecessors, (35), 1 states have call successors, (35) [2024-11-22 11:41:47,615 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 549 transitions. [2024-11-22 11:41:47,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2024-11-22 11:41:47,617 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 11:41:47,617 INFO L215 NwaCegarLoop]: trace histogram [35, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 11:41:47,617 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-22 11:41:47,617 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 11:41:47,618 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 11:41:47,618 INFO L85 PathProgramCache]: Analyzing trace with hash 2135390351, now seen corresponding path program 1 times [2024-11-22 11:41:47,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 11:41:47,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920366566] [2024-11-22 11:41:47,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:41:47,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 11:41:47,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:41:48,023 INFO L134 CoverageAnalysis]: Checked inductivity of 2380 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2380 trivial. 0 not checked. [2024-11-22 11:41:48,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 11:41:48,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920366566] [2024-11-22 11:41:48,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [920366566] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 11:41:48,024 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 11:41:48,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 11:41:48,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098495542] [2024-11-22 11:41:48,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 11:41:48,025 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 11:41:48,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 11:41:48,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 11:41:48,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 11:41:48,026 INFO L87 Difference]: Start difference. First operand 343 states and 549 transitions. Second operand has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 1 states have call successors, (35), 1 states have call predecessors, (35), 1 states have return successors, (35), 1 states have call predecessors, (35), 1 states have call successors, (35) [2024-11-22 11:41:48,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 11:41:48,251 INFO L93 Difference]: Finished difference Result 968 states and 1561 transitions. [2024-11-22 11:41:48,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 11:41:48,252 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 1 states have call successors, (35), 1 states have call predecessors, (35), 1 states have return successors, (35), 1 states have call predecessors, (35), 1 states have call successors, (35) Word has length 250 [2024-11-22 11:41:48,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 11:41:48,256 INFO L225 Difference]: With dead ends: 968 [2024-11-22 11:41:48,256 INFO L226 Difference]: Without dead ends: 704 [2024-11-22 11:41:48,259 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-22 11:41:48,262 INFO L432 NwaCegarLoop]: 379 mSDtfsCounter, 344 mSDsluCounter, 483 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 344 SdHoareTripleChecker+Valid, 862 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-22 11:41:48,262 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [344 Valid, 862 Invalid, 183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-22 11:41:48,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 704 states. [2024-11-22 11:41:48,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 704 to 603. [2024-11-22 11:41:48,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 603 states, 494 states have (on average 1.5303643724696356) internal successors, (756), 494 states have internal predecessors, (756), 105 states have call successors, (105), 3 states have call predecessors, (105), 3 states have return successors, (105), 105 states have call predecessors, (105), 105 states have call successors, (105) [2024-11-22 11:41:48,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 966 transitions. [2024-11-22 11:41:48,309 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 966 transitions. Word has length 250 [2024-11-22 11:41:48,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 11:41:48,310 INFO L471 AbstractCegarLoop]: Abstraction has 603 states and 966 transitions. [2024-11-22 11:41:48,311 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 1 states have call successors, (35), 1 states have call predecessors, (35), 1 states have return successors, (35), 1 states have call predecessors, (35), 1 states have call successors, (35) [2024-11-22 11:41:48,311 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 966 transitions. [2024-11-22 11:41:48,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2024-11-22 11:41:48,313 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 11:41:48,313 INFO L215 NwaCegarLoop]: trace histogram [35, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 11:41:48,313 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-22 11:41:48,314 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 11:41:48,314 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 11:41:48,315 INFO L85 PathProgramCache]: Analyzing trace with hash -243924746, now seen corresponding path program 1 times [2024-11-22 11:41:48,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 11:41:48,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406735074] [2024-11-22 11:41:48,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:41:48,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 11:41:48,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:41:48,929 INFO L134 CoverageAnalysis]: Checked inductivity of 2380 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2380 trivial. 0 not checked. [2024-11-22 11:41:48,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 11:41:48,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406735074] [2024-11-22 11:41:48,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1406735074] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 11:41:48,930 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 11:41:48,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-22 11:41:48,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294812809] [2024-11-22 11:41:48,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 11:41:48,931 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-22 11:41:48,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 11:41:48,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-22 11:41:48,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-11-22 11:41:48,932 INFO L87 Difference]: Start difference. First operand 603 states and 966 transitions. Second operand has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 9 states have internal predecessors, (79), 2 states have call successors, (35), 1 states have call predecessors, (35), 1 states have return successors, (35), 2 states have call predecessors, (35), 2 states have call successors, (35) [2024-11-22 11:41:49,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 11:41:49,589 INFO L93 Difference]: Finished difference Result 1402 states and 2243 transitions. [2024-11-22 11:41:49,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-22 11:41:49,590 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 9 states have internal predecessors, (79), 2 states have call successors, (35), 1 states have call predecessors, (35), 1 states have return successors, (35), 2 states have call predecessors, (35), 2 states have call successors, (35) Word has length 251 [2024-11-22 11:41:49,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 11:41:49,594 INFO L225 Difference]: With dead ends: 1402 [2024-11-22 11:41:49,594 INFO L226 Difference]: Without dead ends: 1019 [2024-11-22 11:41:49,595 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2024-11-22 11:41:49,596 INFO L432 NwaCegarLoop]: 219 mSDtfsCounter, 962 mSDsluCounter, 1071 mSDsCounter, 0 mSdLazyCounter, 550 mSolverCounterSat, 166 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 962 SdHoareTripleChecker+Valid, 1290 SdHoareTripleChecker+Invalid, 716 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 166 IncrementalHoareTripleChecker+Valid, 550 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-22 11:41:49,596 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [962 Valid, 1290 Invalid, 716 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [166 Valid, 550 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-22 11:41:49,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1019 states. [2024-11-22 11:41:49,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1019 to 729. [2024-11-22 11:41:49,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 729 states, 620 states have (on average 1.5548387096774194) internal successors, (964), 620 states have internal predecessors, (964), 105 states have call successors, (105), 3 states have call predecessors, (105), 3 states have return successors, (105), 105 states have call predecessors, (105), 105 states have call successors, (105) [2024-11-22 11:41:49,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 729 states to 729 states and 1174 transitions. [2024-11-22 11:41:49,627 INFO L78 Accepts]: Start accepts. Automaton has 729 states and 1174 transitions. Word has length 251 [2024-11-22 11:41:49,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 11:41:49,627 INFO L471 AbstractCegarLoop]: Abstraction has 729 states and 1174 transitions. [2024-11-22 11:41:49,627 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 9 states have internal predecessors, (79), 2 states have call successors, (35), 1 states have call predecessors, (35), 1 states have return successors, (35), 2 states have call predecessors, (35), 2 states have call successors, (35) [2024-11-22 11:41:49,627 INFO L276 IsEmpty]: Start isEmpty. Operand 729 states and 1174 transitions. [2024-11-22 11:41:49,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2024-11-22 11:41:49,630 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 11:41:49,630 INFO L215 NwaCegarLoop]: trace histogram [35, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 11:41:49,630 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-22 11:41:49,630 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 11:41:49,631 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 11:41:49,631 INFO L85 PathProgramCache]: Analyzing trace with hash -1849732463, now seen corresponding path program 1 times [2024-11-22 11:41:49,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 11:41:49,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156478578] [2024-11-22 11:41:49,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:41:49,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 11:41:49,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:41:49,987 INFO L134 CoverageAnalysis]: Checked inductivity of 2380 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2380 trivial. 0 not checked. [2024-11-22 11:41:49,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 11:41:49,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [156478578] [2024-11-22 11:41:49,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [156478578] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 11:41:49,988 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 11:41:49,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 11:41:49,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065469732] [2024-11-22 11:41:49,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 11:41:49,989 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 11:41:49,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 11:41:49,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 11:41:49,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-22 11:41:49,990 INFO L87 Difference]: Start difference. First operand 729 states and 1174 transitions. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 1 states have call successors, (35), 1 states have call predecessors, (35), 1 states have return successors, (35), 1 states have call predecessors, (35), 1 states have call successors, (35) [2024-11-22 11:41:50,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 11:41:50,240 INFO L93 Difference]: Finished difference Result 2175 states and 3499 transitions. [2024-11-22 11:41:50,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 11:41:50,241 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 1 states have call successors, (35), 1 states have call predecessors, (35), 1 states have return successors, (35), 1 states have call predecessors, (35), 1 states have call successors, (35) Word has length 251 [2024-11-22 11:41:50,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 11:41:50,252 INFO L225 Difference]: With dead ends: 2175 [2024-11-22 11:41:50,252 INFO L226 Difference]: Without dead ends: 1768 [2024-11-22 11:41:50,254 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-22 11:41:50,255 INFO L432 NwaCegarLoop]: 290 mSDtfsCounter, 390 mSDsluCounter, 431 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 390 SdHoareTripleChecker+Valid, 721 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-22 11:41:50,256 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [390 Valid, 721 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-22 11:41:50,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1768 states. [2024-11-22 11:41:50,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1768 to 1477. [2024-11-22 11:41:50,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1477 states, 1330 states have (on average 1.5827067669172932) internal successors, (2105), 1332 states have internal predecessors, (2105), 141 states have call successors, (141), 5 states have call predecessors, (141), 5 states have return successors, (141), 139 states have call predecessors, (141), 141 states have call successors, (141) [2024-11-22 11:41:50,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1477 states to 1477 states and 2387 transitions. [2024-11-22 11:41:50,336 INFO L78 Accepts]: Start accepts. Automaton has 1477 states and 2387 transitions. Word has length 251 [2024-11-22 11:41:50,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 11:41:50,337 INFO L471 AbstractCegarLoop]: Abstraction has 1477 states and 2387 transitions. [2024-11-22 11:41:50,338 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 1 states have call successors, (35), 1 states have call predecessors, (35), 1 states have return successors, (35), 1 states have call predecessors, (35), 1 states have call successors, (35) [2024-11-22 11:41:50,338 INFO L276 IsEmpty]: Start isEmpty. Operand 1477 states and 2387 transitions. [2024-11-22 11:41:50,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2024-11-22 11:41:50,344 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 11:41:50,344 INFO L215 NwaCegarLoop]: trace histogram [35, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 11:41:50,344 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-22 11:41:50,344 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 11:41:50,345 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 11:41:50,345 INFO L85 PathProgramCache]: Analyzing trace with hash 1176911064, now seen corresponding path program 1 times [2024-11-22 11:41:50,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 11:41:50,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203355092] [2024-11-22 11:41:50,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:41:50,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 11:41:50,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:41:51,006 INFO L134 CoverageAnalysis]: Checked inductivity of 2380 backedges. 36 proven. 66 refuted. 0 times theorem prover too weak. 2278 trivial. 0 not checked. [2024-11-22 11:41:51,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 11:41:51,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203355092] [2024-11-22 11:41:51,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1203355092] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 11:41:51,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [614759081] [2024-11-22 11:41:51,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:41:51,008 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 11:41:51,008 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 11:41:51,009 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) [2024-11-22 11:41:51,011 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-22 11:41:51,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:41:51,187 INFO L255 TraceCheckSpWp]: Trace formula consists of 608 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-22 11:41:51,195 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 11:41:51,408 INFO L134 CoverageAnalysis]: Checked inductivity of 2380 backedges. 1212 proven. 45 refuted. 0 times theorem prover too weak. 1123 trivial. 0 not checked. [2024-11-22 11:41:51,408 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 11:41:51,634 INFO L134 CoverageAnalysis]: Checked inductivity of 2380 backedges. 57 proven. 45 refuted. 0 times theorem prover too weak. 2278 trivial. 0 not checked. [2024-11-22 11:41:51,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [614759081] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 11:41:51,635 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 11:41:51,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5, 5] total 11 [2024-11-22 11:41:51,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132723572] [2024-11-22 11:41:51,635 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 11:41:51,636 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-22 11:41:51,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 11:41:51,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-22 11:41:51,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-11-22 11:41:51,637 INFO L87 Difference]: Start difference. First operand 1477 states and 2387 transitions. Second operand has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 4 states have call successors, (85), 2 states have call predecessors, (85), 4 states have return successors, (86), 4 states have call predecessors, (86), 4 states have call successors, (86) [2024-11-22 11:41:52,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 11:41:52,430 INFO L93 Difference]: Finished difference Result 2957 states and 4739 transitions. [2024-11-22 11:41:52,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-22 11:41:52,431 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 4 states have call successors, (85), 2 states have call predecessors, (85), 4 states have return successors, (86), 4 states have call predecessors, (86), 4 states have call successors, (86) Word has length 252 [2024-11-22 11:41:52,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 11:41:52,437 INFO L225 Difference]: With dead ends: 2957 [2024-11-22 11:41:52,438 INFO L226 Difference]: Without dead ends: 1553 [2024-11-22 11:41:52,440 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 528 GetRequests, 501 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 138 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=203, Invalid=553, Unknown=0, NotChecked=0, Total=756 [2024-11-22 11:41:52,441 INFO L432 NwaCegarLoop]: 248 mSDtfsCounter, 1151 mSDsluCounter, 1227 mSDsCounter, 0 mSdLazyCounter, 523 mSolverCounterSat, 295 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1169 SdHoareTripleChecker+Valid, 1475 SdHoareTripleChecker+Invalid, 818 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 295 IncrementalHoareTripleChecker+Valid, 523 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-22 11:41:52,441 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1169 Valid, 1475 Invalid, 818 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [295 Valid, 523 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-22 11:41:52,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1553 states. [2024-11-22 11:41:52,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1553 to 1304. [2024-11-22 11:41:52,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1304 states, 1115 states have (on average 1.5291479820627802) internal successors, (1705), 1115 states have internal predecessors, (1705), 175 states have call successors, (175), 13 states have call predecessors, (175), 13 states have return successors, (175), 175 states have call predecessors, (175), 175 states have call successors, (175) [2024-11-22 11:41:52,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1304 states to 1304 states and 2055 transitions. [2024-11-22 11:41:52,516 INFO L78 Accepts]: Start accepts. Automaton has 1304 states and 2055 transitions. Word has length 252 [2024-11-22 11:41:52,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 11:41:52,516 INFO L471 AbstractCegarLoop]: Abstraction has 1304 states and 2055 transitions. [2024-11-22 11:41:52,516 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 4 states have call successors, (85), 2 states have call predecessors, (85), 4 states have return successors, (86), 4 states have call predecessors, (86), 4 states have call successors, (86) [2024-11-22 11:41:52,517 INFO L276 IsEmpty]: Start isEmpty. Operand 1304 states and 2055 transitions. [2024-11-22 11:41:52,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2024-11-22 11:41:52,519 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 11:41:52,519 INFO L215 NwaCegarLoop]: trace histogram [35, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 11:41:52,527 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-22 11:41:52,720 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 [2024-11-22 11:41:52,720 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 11:41:52,721 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 11:41:52,721 INFO L85 PathProgramCache]: Analyzing trace with hash 1478687444, now seen corresponding path program 1 times [2024-11-22 11:41:52,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 11:41:52,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438665370] [2024-11-22 11:41:52,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:41:52,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 11:41:52,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:41:53,892 INFO L134 CoverageAnalysis]: Checked inductivity of 2380 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2380 trivial. 0 not checked. [2024-11-22 11:41:53,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 11:41:53,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438665370] [2024-11-22 11:41:53,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [438665370] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 11:41:53,892 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 11:41:53,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-22 11:41:53,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659986403] [2024-11-22 11:41:53,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 11:41:53,893 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-22 11:41:53,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 11:41:53,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-22 11:41:53,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2024-11-22 11:41:53,894 INFO L87 Difference]: Start difference. First operand 1304 states and 2055 transitions. Second operand has 8 states, 8 states have (on average 10.25) internal successors, (82), 8 states have internal predecessors, (82), 1 states have call successors, (35), 1 states have call predecessors, (35), 1 states have return successors, (35), 1 states have call predecessors, (35), 1 states have call successors, (35) [2024-11-22 11:41:54,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 11:41:54,985 INFO L93 Difference]: Finished difference Result 5150 states and 7970 transitions. [2024-11-22 11:41:54,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-22 11:41:54,986 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.25) internal successors, (82), 8 states have internal predecessors, (82), 1 states have call successors, (35), 1 states have call predecessors, (35), 1 states have return successors, (35), 1 states have call predecessors, (35), 1 states have call successors, (35) Word has length 254 [2024-11-22 11:41:54,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 11:41:55,004 INFO L225 Difference]: With dead ends: 5150 [2024-11-22 11:41:55,004 INFO L226 Difference]: Without dead ends: 4184 [2024-11-22 11:41:55,008 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2024-11-22 11:41:55,009 INFO L432 NwaCegarLoop]: 353 mSDtfsCounter, 1407 mSDsluCounter, 1052 mSDsCounter, 0 mSdLazyCounter, 537 mSolverCounterSat, 270 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1407 SdHoareTripleChecker+Valid, 1405 SdHoareTripleChecker+Invalid, 807 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 270 IncrementalHoareTripleChecker+Valid, 537 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-22 11:41:55,009 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1407 Valid, 1405 Invalid, 807 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [270 Valid, 537 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-22 11:41:55,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4184 states. [2024-11-22 11:41:55,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4184 to 3402. [2024-11-22 11:41:55,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3402 states, 2906 states have (on average 1.5003441156228492) internal successors, (4360), 2918 states have internal predecessors, (4360), 459 states have call successors, (459), 36 states have call predecessors, (459), 36 states have return successors, (459), 447 states have call predecessors, (459), 459 states have call successors, (459) [2024-11-22 11:41:55,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3402 states to 3402 states and 5278 transitions. [2024-11-22 11:41:55,182 INFO L78 Accepts]: Start accepts. Automaton has 3402 states and 5278 transitions. Word has length 254 [2024-11-22 11:41:55,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 11:41:55,182 INFO L471 AbstractCegarLoop]: Abstraction has 3402 states and 5278 transitions. [2024-11-22 11:41:55,183 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.25) internal successors, (82), 8 states have internal predecessors, (82), 1 states have call successors, (35), 1 states have call predecessors, (35), 1 states have return successors, (35), 1 states have call predecessors, (35), 1 states have call successors, (35) [2024-11-22 11:41:55,183 INFO L276 IsEmpty]: Start isEmpty. Operand 3402 states and 5278 transitions. [2024-11-22 11:41:55,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2024-11-22 11:41:55,186 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 11:41:55,187 INFO L215 NwaCegarLoop]: trace histogram [35, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 11:41:55,187 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-22 11:41:55,187 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 11:41:55,187 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 11:41:55,187 INFO L85 PathProgramCache]: Analyzing trace with hash -353825006, now seen corresponding path program 1 times [2024-11-22 11:41:55,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 11:41:55,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445730535] [2024-11-22 11:41:55,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:41:55,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 11:41:55,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:41:55,977 INFO L134 CoverageAnalysis]: Checked inductivity of 2380 backedges. 66 proven. 36 refuted. 0 times theorem prover too weak. 2278 trivial. 0 not checked. [2024-11-22 11:41:55,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 11:41:55,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445730535] [2024-11-22 11:41:55,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1445730535] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 11:41:55,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [678240402] [2024-11-22 11:41:55,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:41:55,978 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 11:41:55,978 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 11:41:55,980 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) [2024-11-22 11:41:55,988 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-22 11:41:56,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:41:56,172 INFO L255 TraceCheckSpWp]: Trace formula consists of 615 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-22 11:41:56,176 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 11:41:56,395 INFO L134 CoverageAnalysis]: Checked inductivity of 2380 backedges. 1134 proven. 36 refuted. 0 times theorem prover too weak. 1210 trivial. 0 not checked. [2024-11-22 11:41:56,396 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 11:41:56,675 INFO L134 CoverageAnalysis]: Checked inductivity of 2380 backedges. 66 proven. 36 refuted. 0 times theorem prover too weak. 2278 trivial. 0 not checked. [2024-11-22 11:41:56,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [678240402] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 11:41:56,675 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 11:41:56,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 13 [2024-11-22 11:41:56,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182494391] [2024-11-22 11:41:56,676 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 11:41:56,676 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-22 11:41:56,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 11:41:56,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-22 11:41:56,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2024-11-22 11:41:56,677 INFO L87 Difference]: Start difference. First operand 3402 states and 5278 transitions. Second operand has 13 states, 13 states have (on average 8.384615384615385) internal successors, (109), 13 states have internal predecessors, (109), 2 states have call successors, (47), 2 states have call predecessors, (47), 4 states have return successors, (48), 2 states have call predecessors, (48), 2 states have call successors, (48) [2024-11-22 11:41:58,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 11:41:58,396 INFO L93 Difference]: Finished difference Result 11110 states and 16946 transitions. [2024-11-22 11:41:58,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-11-22 11:41:58,396 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 8.384615384615385) internal successors, (109), 13 states have internal predecessors, (109), 2 states have call successors, (47), 2 states have call predecessors, (47), 4 states have return successors, (48), 2 states have call predecessors, (48), 2 states have call successors, (48) Word has length 254 [2024-11-22 11:41:58,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 11:41:58,430 INFO L225 Difference]: With dead ends: 11110 [2024-11-22 11:41:58,431 INFO L226 Difference]: Without dead ends: 8286 [2024-11-22 11:41:58,439 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 541 GetRequests, 506 SyntacticMatches, 2 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 229 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=299, Invalid=891, Unknown=0, NotChecked=0, Total=1190 [2024-11-22 11:41:58,440 INFO L432 NwaCegarLoop]: 286 mSDtfsCounter, 1526 mSDsluCounter, 1727 mSDsCounter, 0 mSdLazyCounter, 1057 mSolverCounterSat, 384 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1580 SdHoareTripleChecker+Valid, 2013 SdHoareTripleChecker+Invalid, 1441 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 384 IncrementalHoareTripleChecker+Valid, 1057 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-22 11:41:58,440 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1580 Valid, 2013 Invalid, 1441 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [384 Valid, 1057 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-22 11:41:58,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8286 states. [2024-11-22 11:41:58,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8286 to 6760. [2024-11-22 11:41:58,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6760 states, 5769 states have (on average 1.470792165019934) internal successors, (8485), 5801 states have internal predecessors, (8485), 903 states have call successors, (903), 87 states have call predecessors, (903), 87 states have return successors, (903), 871 states have call predecessors, (903), 903 states have call successors, (903) [2024-11-22 11:41:58,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6760 states to 6760 states and 10291 transitions. [2024-11-22 11:41:58,824 INFO L78 Accepts]: Start accepts. Automaton has 6760 states and 10291 transitions. Word has length 254 [2024-11-22 11:41:58,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 11:41:58,826 INFO L471 AbstractCegarLoop]: Abstraction has 6760 states and 10291 transitions. [2024-11-22 11:41:58,826 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.384615384615385) internal successors, (109), 13 states have internal predecessors, (109), 2 states have call successors, (47), 2 states have call predecessors, (47), 4 states have return successors, (48), 2 states have call predecessors, (48), 2 states have call successors, (48) [2024-11-22 11:41:58,826 INFO L276 IsEmpty]: Start isEmpty. Operand 6760 states and 10291 transitions. [2024-11-22 11:41:58,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2024-11-22 11:41:58,832 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 11:41:58,832 INFO L215 NwaCegarLoop]: trace histogram [35, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 11:41:58,840 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-22 11:41:59,033 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 11:41:59,033 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 11:41:59,034 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 11:41:59,034 INFO L85 PathProgramCache]: Analyzing trace with hash -385221164, now seen corresponding path program 1 times [2024-11-22 11:41:59,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 11:41:59,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047741222] [2024-11-22 11:41:59,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:41:59,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 11:41:59,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:41:59,619 INFO L134 CoverageAnalysis]: Checked inductivity of 2380 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2380 trivial. 0 not checked. [2024-11-22 11:41:59,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 11:41:59,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047741222] [2024-11-22 11:41:59,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1047741222] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 11:41:59,620 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 11:41:59,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-22 11:41:59,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512447493] [2024-11-22 11:41:59,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 11:41:59,621 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 11:41:59,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 11:41:59,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 11:41:59,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-22 11:41:59,622 INFO L87 Difference]: Start difference. First operand 6760 states and 10291 transitions. Second operand has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 states have internal predecessors, (82), 1 states have call successors, (35), 1 states have call predecessors, (35), 1 states have return successors, (35), 1 states have call predecessors, (35), 1 states have call successors, (35) [2024-11-22 11:42:00,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 11:42:00,471 INFO L93 Difference]: Finished difference Result 19070 states and 28701 transitions. [2024-11-22 11:42:00,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-22 11:42:00,472 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 states have internal predecessors, (82), 1 states have call successors, (35), 1 states have call predecessors, (35), 1 states have return successors, (35), 1 states have call predecessors, (35), 1 states have call successors, (35) Word has length 254 [2024-11-22 11:42:00,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 11:42:00,522 INFO L225 Difference]: With dead ends: 19070 [2024-11-22 11:42:00,522 INFO L226 Difference]: Without dead ends: 13090 [2024-11-22 11:42:00,535 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2024-11-22 11:42:00,535 INFO L432 NwaCegarLoop]: 245 mSDtfsCounter, 607 mSDsluCounter, 942 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 149 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 607 SdHoareTripleChecker+Valid, 1187 SdHoareTripleChecker+Invalid, 276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 149 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-22 11:42:00,536 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [607 Valid, 1187 Invalid, 276 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [149 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-22 11:42:00,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13090 states. [2024-11-22 11:42:00,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13090 to 9760. [2024-11-22 11:42:01,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9760 states, 8691 states have (on average 1.4931538373029571) internal successors, (12977), 8727 states have internal predecessors, (12977), 975 states have call successors, (975), 93 states have call predecessors, (975), 93 states have return successors, (975), 939 states have call predecessors, (975), 975 states have call successors, (975) [2024-11-22 11:42:01,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9760 states to 9760 states and 14927 transitions. [2024-11-22 11:42:01,032 INFO L78 Accepts]: Start accepts. Automaton has 9760 states and 14927 transitions. Word has length 254 [2024-11-22 11:42:01,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 11:42:01,033 INFO L471 AbstractCegarLoop]: Abstraction has 9760 states and 14927 transitions. [2024-11-22 11:42:01,033 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 states have internal predecessors, (82), 1 states have call successors, (35), 1 states have call predecessors, (35), 1 states have return successors, (35), 1 states have call predecessors, (35), 1 states have call successors, (35) [2024-11-22 11:42:01,033 INFO L276 IsEmpty]: Start isEmpty. Operand 9760 states and 14927 transitions. [2024-11-22 11:42:01,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2024-11-22 11:42:01,041 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 11:42:01,041 INFO L215 NwaCegarLoop]: trace histogram [35, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 11:42:01,041 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-22 11:42:01,041 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 11:42:01,042 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 11:42:01,042 INFO L85 PathProgramCache]: Analyzing trace with hash 634681942, now seen corresponding path program 1 times [2024-11-22 11:42:01,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 11:42:01,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228517944] [2024-11-22 11:42:01,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:42:01,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 11:42:01,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:42:01,129 INFO L134 CoverageAnalysis]: Checked inductivity of 2380 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2380 trivial. 0 not checked. [2024-11-22 11:42:01,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 11:42:01,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228517944] [2024-11-22 11:42:01,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [228517944] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 11:42:01,130 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 11:42:01,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 11:42:01,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94927186] [2024-11-22 11:42:01,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 11:42:01,130 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 11:42:01,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 11:42:01,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 11:42:01,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 11:42:01,131 INFO L87 Difference]: Start difference. First operand 9760 states and 14927 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 1 states have call successors, (35), 1 states have call predecessors, (35), 1 states have return successors, (35), 1 states have call predecessors, (35), 1 states have call successors, (35) [2024-11-22 11:42:01,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 11:42:01,620 INFO L93 Difference]: Finished difference Result 17470 states and 26517 transitions. [2024-11-22 11:42:01,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 11:42:01,621 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 1 states have call successors, (35), 1 states have call predecessors, (35), 1 states have return successors, (35), 1 states have call predecessors, (35), 1 states have call successors, (35) Word has length 254 [2024-11-22 11:42:01,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 11:42:01,654 INFO L225 Difference]: With dead ends: 17470 [2024-11-22 11:42:01,654 INFO L226 Difference]: Without dead ends: 10888 [2024-11-22 11:42:01,670 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 11:42:01,671 INFO L432 NwaCegarLoop]: 278 mSDtfsCounter, 219 mSDsluCounter, 234 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 219 SdHoareTripleChecker+Valid, 512 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 11:42:01,671 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [219 Valid, 512 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 11:42:01,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10888 states. [2024-11-22 11:42:02,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10888 to 10474. [2024-11-22 11:42:02,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10474 states, 8909 states have (on average 1.4545964754742395) internal successors, (12959), 8961 states have internal predecessors, (12959), 1415 states have call successors, (1415), 149 states have call predecessors, (1415), 149 states have return successors, (1415), 1363 states have call predecessors, (1415), 1415 states have call successors, (1415) [2024-11-22 11:42:02,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10474 states to 10474 states and 15789 transitions. [2024-11-22 11:42:02,433 INFO L78 Accepts]: Start accepts. Automaton has 10474 states and 15789 transitions. Word has length 254 [2024-11-22 11:42:02,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 11:42:02,436 INFO L471 AbstractCegarLoop]: Abstraction has 10474 states and 15789 transitions. [2024-11-22 11:42:02,436 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 1 states have call successors, (35), 1 states have call predecessors, (35), 1 states have return successors, (35), 1 states have call predecessors, (35), 1 states have call successors, (35) [2024-11-22 11:42:02,436 INFO L276 IsEmpty]: Start isEmpty. Operand 10474 states and 15789 transitions. [2024-11-22 11:42:02,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2024-11-22 11:42:02,446 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 11:42:02,446 INFO L215 NwaCegarLoop]: trace histogram [35, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 11:42:02,446 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-22 11:42:02,446 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 11:42:02,447 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 11:42:02,447 INFO L85 PathProgramCache]: Analyzing trace with hash 1335746520, now seen corresponding path program 1 times [2024-11-22 11:42:02,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 11:42:02,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747368964] [2024-11-22 11:42:02,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:42:02,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 11:42:02,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:42:03,069 INFO L134 CoverageAnalysis]: Checked inductivity of 2380 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2380 trivial. 0 not checked. [2024-11-22 11:42:03,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 11:42:03,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [747368964] [2024-11-22 11:42:03,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [747368964] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 11:42:03,070 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 11:42:03,070 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-22 11:42:03,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797281963] [2024-11-22 11:42:03,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 11:42:03,071 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 11:42:03,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 11:42:03,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 11:42:03,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-22 11:42:03,072 INFO L87 Difference]: Start difference. First operand 10474 states and 15789 transitions. Second operand has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 states have internal predecessors, (82), 1 states have call successors, (35), 1 states have call predecessors, (35), 1 states have return successors, (35), 1 states have call predecessors, (35), 1 states have call successors, (35) [2024-11-22 11:42:04,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 11:42:04,208 INFO L93 Difference]: Finished difference Result 20414 states and 30467 transitions. [2024-11-22 11:42:04,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-22 11:42:04,214 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 states have internal predecessors, (82), 1 states have call successors, (35), 1 states have call predecessors, (35), 1 states have return successors, (35), 1 states have call predecessors, (35), 1 states have call successors, (35) Word has length 254 [2024-11-22 11:42:04,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 11:42:04,253 INFO L225 Difference]: With dead ends: 20414 [2024-11-22 11:42:04,254 INFO L226 Difference]: Without dead ends: 12976 [2024-11-22 11:42:04,272 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2024-11-22 11:42:04,274 INFO L432 NwaCegarLoop]: 276 mSDtfsCounter, 604 mSDsluCounter, 696 mSDsCounter, 0 mSdLazyCounter, 282 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 604 SdHoareTripleChecker+Valid, 972 SdHoareTripleChecker+Invalid, 363 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 282 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-22 11:42:04,274 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [604 Valid, 972 Invalid, 363 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 282 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-22 11:42:04,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12976 states. [2024-11-22 11:42:04,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12976 to 8988. [2024-11-22 11:42:04,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8988 states, 7625 states have (on average 1.4482622950819672) internal successors, (11043), 7665 states have internal predecessors, (11043), 1215 states have call successors, (1215), 147 states have call predecessors, (1215), 147 states have return successors, (1215), 1175 states have call predecessors, (1215), 1215 states have call successors, (1215) [2024-11-22 11:42:04,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8988 states to 8988 states and 13473 transitions. [2024-11-22 11:42:04,745 INFO L78 Accepts]: Start accepts. Automaton has 8988 states and 13473 transitions. Word has length 254 [2024-11-22 11:42:04,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 11:42:04,745 INFO L471 AbstractCegarLoop]: Abstraction has 8988 states and 13473 transitions. [2024-11-22 11:42:04,746 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 states have internal predecessors, (82), 1 states have call successors, (35), 1 states have call predecessors, (35), 1 states have return successors, (35), 1 states have call predecessors, (35), 1 states have call successors, (35) [2024-11-22 11:42:04,746 INFO L276 IsEmpty]: Start isEmpty. Operand 8988 states and 13473 transitions. [2024-11-22 11:42:04,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2024-11-22 11:42:04,753 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 11:42:04,753 INFO L215 NwaCegarLoop]: trace histogram [35, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 11:42:04,753 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-22 11:42:04,753 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 11:42:04,753 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 11:42:04,753 INFO L85 PathProgramCache]: Analyzing trace with hash -496765930, now seen corresponding path program 1 times [2024-11-22 11:42:04,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 11:42:04,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420303836] [2024-11-22 11:42:04,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:42:04,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 11:42:04,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:42:05,486 INFO L134 CoverageAnalysis]: Checked inductivity of 2380 backedges. 42 proven. 60 refuted. 0 times theorem prover too weak. 2278 trivial. 0 not checked. [2024-11-22 11:42:05,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 11:42:05,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420303836] [2024-11-22 11:42:05,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [420303836] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 11:42:05,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [582526014] [2024-11-22 11:42:05,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:42:05,487 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 11:42:05,488 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 11:42:05,489 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) [2024-11-22 11:42:05,490 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-22 11:42:05,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:42:05,691 INFO L255 TraceCheckSpWp]: Trace formula consists of 617 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-22 11:42:05,695 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 11:42:06,993 INFO L134 CoverageAnalysis]: Checked inductivity of 2380 backedges. 1204 proven. 114 refuted. 0 times theorem prover too weak. 1062 trivial. 0 not checked. [2024-11-22 11:42:06,993 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 11:42:08,525 INFO L134 CoverageAnalysis]: Checked inductivity of 2380 backedges. 84 proven. 117 refuted. 0 times theorem prover too weak. 2179 trivial. 0 not checked. [2024-11-22 11:42:08,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [582526014] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 11:42:08,525 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 11:42:08,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 14] total 34 [2024-11-22 11:42:08,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65382832] [2024-11-22 11:42:08,526 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 11:42:08,527 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-22 11:42:08,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 11:42:08,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-22 11:42:08,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=175, Invalid=947, Unknown=0, NotChecked=0, Total=1122 [2024-11-22 11:42:08,528 INFO L87 Difference]: Start difference. First operand 8988 states and 13473 transitions. Second operand has 34 states, 33 states have (on average 6.393939393939394) internal successors, (211), 32 states have internal predecessors, (211), 8 states have call successors, (105), 4 states have call predecessors, (105), 8 states have return successors, (105), 8 states have call predecessors, (105), 8 states have call successors, (105) [2024-11-22 11:42:12,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 11:42:12,236 INFO L93 Difference]: Finished difference Result 27185 states and 40389 transitions. [2024-11-22 11:42:12,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2024-11-22 11:42:12,237 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 33 states have (on average 6.393939393939394) internal successors, (211), 32 states have internal predecessors, (211), 8 states have call successors, (105), 4 states have call predecessors, (105), 8 states have return successors, (105), 8 states have call predecessors, (105), 8 states have call successors, (105) Word has length 254 [2024-11-22 11:42:12,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 11:42:12,292 INFO L225 Difference]: With dead ends: 27185 [2024-11-22 11:42:12,292 INFO L226 Difference]: Without dead ends: 19837 [2024-11-22 11:42:12,310 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 552 GetRequests, 491 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 886 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=823, Invalid=3083, Unknown=0, NotChecked=0, Total=3906 [2024-11-22 11:42:12,311 INFO L432 NwaCegarLoop]: 164 mSDtfsCounter, 3172 mSDsluCounter, 2101 mSDsCounter, 0 mSdLazyCounter, 2101 mSolverCounterSat, 412 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3173 SdHoareTripleChecker+Valid, 2265 SdHoareTripleChecker+Invalid, 2513 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 412 IncrementalHoareTripleChecker+Valid, 2101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-22 11:42:12,311 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3173 Valid, 2265 Invalid, 2513 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [412 Valid, 2101 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-22 11:42:12,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19837 states. [2024-11-22 11:42:13,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19837 to 12511. [2024-11-22 11:42:13,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12511 states, 11145 states have (on average 1.4672050246747421) internal successors, (16352), 11185 states have internal predecessors, (16352), 1215 states have call successors, (1215), 150 states have call predecessors, (1215), 150 states have return successors, (1215), 1175 states have call predecessors, (1215), 1215 states have call successors, (1215) [2024-11-22 11:42:13,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12511 states to 12511 states and 18782 transitions. [2024-11-22 11:42:13,159 INFO L78 Accepts]: Start accepts. Automaton has 12511 states and 18782 transitions. Word has length 254 [2024-11-22 11:42:13,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 11:42:13,159 INFO L471 AbstractCegarLoop]: Abstraction has 12511 states and 18782 transitions. [2024-11-22 11:42:13,160 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 33 states have (on average 6.393939393939394) internal successors, (211), 32 states have internal predecessors, (211), 8 states have call successors, (105), 4 states have call predecessors, (105), 8 states have return successors, (105), 8 states have call predecessors, (105), 8 states have call successors, (105) [2024-11-22 11:42:13,160 INFO L276 IsEmpty]: Start isEmpty. Operand 12511 states and 18782 transitions. [2024-11-22 11:42:13,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2024-11-22 11:42:13,175 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 11:42:13,175 INFO L215 NwaCegarLoop]: trace histogram [35, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 11:42:13,190 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-22 11:42:13,378 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 11:42:13,379 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 11:42:13,380 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 11:42:13,380 INFO L85 PathProgramCache]: Analyzing trace with hash 577497753, now seen corresponding path program 1 times [2024-11-22 11:42:13,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 11:42:13,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769173895] [2024-11-22 11:42:13,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:42:13,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 11:42:13,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:42:14,319 INFO L134 CoverageAnalysis]: Checked inductivity of 2380 backedges. 84 proven. 114 refuted. 0 times theorem prover too weak. 2182 trivial. 0 not checked. [2024-11-22 11:42:14,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 11:42:14,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769173895] [2024-11-22 11:42:14,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [769173895] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 11:42:14,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1745466566] [2024-11-22 11:42:14,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:42:14,319 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 11:42:14,320 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 11:42:14,322 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) [2024-11-22 11:42:14,328 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-22 11:42:14,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:42:14,536 INFO L255 TraceCheckSpWp]: Trace formula consists of 615 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-22 11:42:14,540 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 11:42:15,547 INFO L134 CoverageAnalysis]: Checked inductivity of 2380 backedges. 1204 proven. 114 refuted. 0 times theorem prover too weak. 1062 trivial. 0 not checked. [2024-11-22 11:42:15,547 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 11:42:16,577 INFO L134 CoverageAnalysis]: Checked inductivity of 2380 backedges. 84 proven. 117 refuted. 0 times theorem prover too weak. 2179 trivial. 0 not checked. [2024-11-22 11:42:16,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1745466566] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 11:42:16,580 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 11:42:16,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 12] total 26 [2024-11-22 11:42:16,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322780724] [2024-11-22 11:42:16,580 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 11:42:16,581 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-22 11:42:16,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 11:42:16,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-22 11:42:16,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=504, Unknown=0, NotChecked=0, Total=650 [2024-11-22 11:42:16,583 INFO L87 Difference]: Start difference. First operand 12511 states and 18782 transitions. Second operand has 26 states, 25 states have (on average 7.76) internal successors, (194), 24 states have internal predecessors, (194), 7 states have call successors, (105), 4 states have call predecessors, (105), 8 states have return successors, (105), 7 states have call predecessors, (105), 7 states have call successors, (105) [2024-11-22 11:42:31,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 11:42:31,149 INFO L93 Difference]: Finished difference Result 98970 states and 147092 transitions. [2024-11-22 11:42:31,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 113 states. [2024-11-22 11:42:31,149 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 7.76) internal successors, (194), 24 states have internal predecessors, (194), 7 states have call successors, (105), 4 states have call predecessors, (105), 8 states have return successors, (105), 7 states have call predecessors, (105), 7 states have call successors, (105) Word has length 254 [2024-11-22 11:42:31,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 11:42:31,409 INFO L225 Difference]: With dead ends: 98970 [2024-11-22 11:42:31,410 INFO L226 Difference]: Without dead ends: 90956 [2024-11-22 11:42:31,441 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 643 GetRequests, 516 SyntacticMatches, 0 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6711 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=3752, Invalid=12760, Unknown=0, NotChecked=0, Total=16512 [2024-11-22 11:42:31,442 INFO L432 NwaCegarLoop]: 480 mSDtfsCounter, 4222 mSDsluCounter, 4200 mSDsCounter, 0 mSdLazyCounter, 3885 mSolverCounterSat, 1204 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4251 SdHoareTripleChecker+Valid, 4680 SdHoareTripleChecker+Invalid, 5089 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1204 IncrementalHoareTripleChecker+Valid, 3885 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2024-11-22 11:42:31,442 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4251 Valid, 4680 Invalid, 5089 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1204 Valid, 3885 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2024-11-22 11:42:31,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90956 states. [2024-11-22 11:42:34,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90956 to 59418. [2024-11-22 11:42:34,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59418 states, 55598 states have (on average 1.518939530198928) internal successors, (84450), 55768 states have internal predecessors, (84450), 3345 states have call successors, (3345), 474 states have call predecessors, (3345), 474 states have return successors, (3345), 3175 states have call predecessors, (3345), 3345 states have call successors, (3345) [2024-11-22 11:42:34,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59418 states to 59418 states and 91140 transitions. [2024-11-22 11:42:34,366 INFO L78 Accepts]: Start accepts. Automaton has 59418 states and 91140 transitions. Word has length 254 [2024-11-22 11:42:34,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 11:42:34,366 INFO L471 AbstractCegarLoop]: Abstraction has 59418 states and 91140 transitions. [2024-11-22 11:42:34,367 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 7.76) internal successors, (194), 24 states have internal predecessors, (194), 7 states have call successors, (105), 4 states have call predecessors, (105), 8 states have return successors, (105), 7 states have call predecessors, (105), 7 states have call successors, (105) [2024-11-22 11:42:34,367 INFO L276 IsEmpty]: Start isEmpty. Operand 59418 states and 91140 transitions. [2024-11-22 11:42:34,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2024-11-22 11:42:34,400 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 11:42:34,400 INFO L215 NwaCegarLoop]: trace histogram [35, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 11:42:34,409 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-22 11:42:34,601 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-22 11:42:34,602 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 11:42:34,602 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 11:42:34,602 INFO L85 PathProgramCache]: Analyzing trace with hash 431047897, now seen corresponding path program 1 times [2024-11-22 11:42:34,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 11:42:34,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1229879688] [2024-11-22 11:42:34,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:42:34,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 11:42:34,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:42:35,951 INFO L134 CoverageAnalysis]: Checked inductivity of 2380 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2380 trivial. 0 not checked. [2024-11-22 11:42:35,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 11:42:35,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1229879688] [2024-11-22 11:42:35,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1229879688] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 11:42:35,952 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 11:42:35,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-22 11:42:35,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292946906] [2024-11-22 11:42:35,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 11:42:35,952 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-22 11:42:35,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 11:42:35,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-22 11:42:35,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2024-11-22 11:42:35,954 INFO L87 Difference]: Start difference. First operand 59418 states and 91140 transitions. Second operand has 11 states, 11 states have (on average 7.545454545454546) internal successors, (83), 11 states have internal predecessors, (83), 2 states have call successors, (35), 1 states have call predecessors, (35), 1 states have return successors, (35), 2 states have call predecessors, (35), 2 states have call successors, (35) [2024-11-22 11:42:40,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 11:42:40,645 INFO L93 Difference]: Finished difference Result 127909 states and 193806 transitions. [2024-11-22 11:42:40,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-22 11:42:40,646 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 7.545454545454546) internal successors, (83), 11 states have internal predecessors, (83), 2 states have call successors, (35), 1 states have call predecessors, (35), 1 states have return successors, (35), 2 states have call predecessors, (35), 2 states have call successors, (35) Word has length 255 [2024-11-22 11:42:40,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 11:42:40,841 INFO L225 Difference]: With dead ends: 127909 [2024-11-22 11:42:40,841 INFO L226 Difference]: Without dead ends: 86239 [2024-11-22 11:42:40,891 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=137, Invalid=369, Unknown=0, NotChecked=0, Total=506 [2024-11-22 11:42:40,892 INFO L432 NwaCegarLoop]: 330 mSDtfsCounter, 810 mSDsluCounter, 2012 mSDsCounter, 0 mSdLazyCounter, 1262 mSolverCounterSat, 124 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 810 SdHoareTripleChecker+Valid, 2342 SdHoareTripleChecker+Invalid, 1386 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 124 IncrementalHoareTripleChecker+Valid, 1262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-22 11:42:40,892 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [810 Valid, 2342 Invalid, 1386 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [124 Valid, 1262 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-22 11:42:40,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86239 states. [2024-11-22 11:42:44,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86239 to 60699. [2024-11-22 11:42:44,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60699 states, 56879 states have (on average 1.5175020657887797) internal successors, (86314), 57049 states have internal predecessors, (86314), 3345 states have call successors, (3345), 474 states have call predecessors, (3345), 474 states have return successors, (3345), 3175 states have call predecessors, (3345), 3345 states have call successors, (3345) [2024-11-22 11:42:44,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60699 states to 60699 states and 93004 transitions. [2024-11-22 11:42:44,640 INFO L78 Accepts]: Start accepts. Automaton has 60699 states and 93004 transitions. Word has length 255 [2024-11-22 11:42:44,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 11:42:44,641 INFO L471 AbstractCegarLoop]: Abstraction has 60699 states and 93004 transitions. [2024-11-22 11:42:44,642 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.545454545454546) internal successors, (83), 11 states have internal predecessors, (83), 2 states have call successors, (35), 1 states have call predecessors, (35), 1 states have return successors, (35), 2 states have call predecessors, (35), 2 states have call successors, (35) [2024-11-22 11:42:44,642 INFO L276 IsEmpty]: Start isEmpty. Operand 60699 states and 93004 transitions. [2024-11-22 11:42:44,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2024-11-22 11:42:44,672 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 11:42:44,672 INFO L215 NwaCegarLoop]: trace histogram [35, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 11:42:44,673 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-22 11:42:44,673 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 11:42:44,673 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 11:42:44,673 INFO L85 PathProgramCache]: Analyzing trace with hash 1505311580, now seen corresponding path program 1 times [2024-11-22 11:42:44,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 11:42:44,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416975180] [2024-11-22 11:42:44,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:42:44,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 11:42:44,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:42:45,096 INFO L134 CoverageAnalysis]: Checked inductivity of 2380 backedges. 39 proven. 63 refuted. 0 times theorem prover too weak. 2278 trivial. 0 not checked. [2024-11-22 11:42:45,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 11:42:45,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416975180] [2024-11-22 11:42:45,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1416975180] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 11:42:45,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1420954556] [2024-11-22 11:42:45,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:42:45,097 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 11:42:45,097 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 11:42:45,100 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) [2024-11-22 11:42:45,101 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-22 11:42:45,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:42:45,394 INFO L255 TraceCheckSpWp]: Trace formula consists of 617 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-22 11:42:45,402 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 11:42:46,089 INFO L134 CoverageAnalysis]: Checked inductivity of 2380 backedges. 1152 proven. 63 refuted. 0 times theorem prover too weak. 1165 trivial. 0 not checked. [2024-11-22 11:42:46,089 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 11:42:46,399 INFO L134 CoverageAnalysis]: Checked inductivity of 2380 backedges. 39 proven. 63 refuted. 0 times theorem prover too weak. 2278 trivial. 0 not checked. [2024-11-22 11:42:46,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1420954556] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 11:42:46,399 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 11:42:46,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 8] total 20 [2024-11-22 11:42:46,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079710451] [2024-11-22 11:42:46,400 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 11:42:46,400 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-22 11:42:46,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 11:42:46,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-22 11:42:46,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=301, Unknown=0, NotChecked=0, Total=380 [2024-11-22 11:42:46,401 INFO L87 Difference]: Start difference. First operand 60699 states and 93004 transitions. Second operand has 20 states, 19 states have (on average 8.263157894736842) internal successors, (157), 19 states have internal predecessors, (157), 7 states have call successors, (105), 3 states have call predecessors, (105), 6 states have return successors, (105), 7 states have call predecessors, (105), 7 states have call successors, (105) [2024-11-22 11:42:53,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 11:42:53,921 INFO L93 Difference]: Finished difference Result 182396 states and 279528 transitions. [2024-11-22 11:42:53,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-22 11:42:53,922 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 8.263157894736842) internal successors, (157), 19 states have internal predecessors, (157), 7 states have call successors, (105), 3 states have call predecessors, (105), 6 states have return successors, (105), 7 states have call predecessors, (105), 7 states have call successors, (105) Word has length 255 [2024-11-22 11:42:53,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 11:42:54,222 INFO L225 Difference]: With dead ends: 182396 [2024-11-22 11:42:54,222 INFO L226 Difference]: Without dead ends: 131359 [2024-11-22 11:42:54,286 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 533 GetRequests, 502 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 173 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=268, Invalid=788, Unknown=0, NotChecked=0, Total=1056 [2024-11-22 11:42:54,286 INFO L432 NwaCegarLoop]: 449 mSDtfsCounter, 1160 mSDsluCounter, 2203 mSDsCounter, 0 mSdLazyCounter, 1087 mSolverCounterSat, 184 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1193 SdHoareTripleChecker+Valid, 2652 SdHoareTripleChecker+Invalid, 1271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 184 IncrementalHoareTripleChecker+Valid, 1087 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-22 11:42:54,287 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1193 Valid, 2652 Invalid, 1271 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [184 Valid, 1087 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-22 11:42:54,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131359 states.