./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount500_file-81.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3061b6dc Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount500_file-81.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 8e61ad20a36349f4673d22f97854260433b62fc5e4079b00e6a93a15c6138c2d --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-19 00:07:34,014 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-19 00:07:34,094 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-19 00:07:34,101 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-19 00:07:34,102 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-19 00:07:34,130 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-19 00:07:34,131 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-19 00:07:34,131 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-19 00:07:34,132 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-19 00:07:34,132 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-19 00:07:34,133 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-19 00:07:34,133 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-19 00:07:34,134 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-19 00:07:34,134 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-19 00:07:34,134 INFO L153 SettingsManager]: * Use SBE=true [2024-11-19 00:07:34,135 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-19 00:07:34,135 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-19 00:07:34,136 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-19 00:07:34,136 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-19 00:07:34,136 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-19 00:07:34,137 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-19 00:07:34,141 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-19 00:07:34,142 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-19 00:07:34,142 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-19 00:07:34,142 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-19 00:07:34,142 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-19 00:07:34,143 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-19 00:07:34,143 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-19 00:07:34,143 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-19 00:07:34,144 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-19 00:07:34,144 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-19 00:07:34,144 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-19 00:07:34,148 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 00:07:34,149 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-19 00:07:34,149 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-19 00:07:34,149 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-19 00:07:34,150 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-19 00:07:34,150 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-19 00:07:34,151 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-19 00:07:34,151 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-19 00:07:34,151 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-19 00:07:34,152 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-19 00:07:34,152 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8e61ad20a36349f4673d22f97854260433b62fc5e4079b00e6a93a15c6138c2d [2024-11-19 00:07:34,439 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-19 00:07:34,463 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-19 00:07:34,465 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-19 00:07:34,468 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-19 00:07:34,468 INFO L274 PluginConnector]: CDTParser initialized [2024-11-19 00:07:34,469 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount500_file-81.i [2024-11-19 00:07:35,991 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-19 00:07:36,291 INFO L384 CDTParser]: Found 1 translation units. [2024-11-19 00:07:36,292 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount500_file-81.i [2024-11-19 00:07:36,316 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/36b4fdd26/99a2923d1ebc497ea55f369a07b8ae5f/FLAG648d7c56b [2024-11-19 00:07:36,341 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/36b4fdd26/99a2923d1ebc497ea55f369a07b8ae5f [2024-11-19 00:07:36,344 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-19 00:07:36,347 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-19 00:07:36,348 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-19 00:07:36,349 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-19 00:07:36,354 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-19 00:07:36,355 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 12:07:36" (1/1) ... [2024-11-19 00:07:36,357 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4df433d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 12:07:36, skipping insertion in model container [2024-11-19 00:07:36,357 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 12:07:36" (1/1) ... [2024-11-19 00:07:36,424 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-19 00:07:36,601 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_amount500_file-81.i[916,929] [2024-11-19 00:07:36,888 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 00:07:36,914 INFO L200 MainTranslator]: Completed pre-run [2024-11-19 00:07:36,929 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_amount500_file-81.i[916,929] [2024-11-19 00:07:37,084 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 00:07:37,112 INFO L204 MainTranslator]: Completed translation [2024-11-19 00:07:37,113 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 12:07:37 WrapperNode [2024-11-19 00:07:37,113 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-19 00:07:37,114 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-19 00:07:37,115 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-19 00:07:37,115 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-19 00:07:37,123 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 12:07:37" (1/1) ... [2024-11-19 00:07:37,158 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 12:07:37" (1/1) ... [2024-11-19 00:07:37,289 INFO L138 Inliner]: procedures = 26, calls = 89, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 814 [2024-11-19 00:07:37,289 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-19 00:07:37,291 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-19 00:07:37,291 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-19 00:07:37,291 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-19 00:07:37,302 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 12:07:37" (1/1) ... [2024-11-19 00:07:37,303 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 12:07:37" (1/1) ... [2024-11-19 00:07:37,323 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 12:07:37" (1/1) ... [2024-11-19 00:07:37,392 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]. [2024-11-19 00:07:37,392 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 12:07:37" (1/1) ... [2024-11-19 00:07:37,392 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 12:07:37" (1/1) ... [2024-11-19 00:07:37,441 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 12:07:37" (1/1) ... [2024-11-19 00:07:37,451 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 12:07:37" (1/1) ... [2024-11-19 00:07:37,479 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 12:07:37" (1/1) ... [2024-11-19 00:07:37,490 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 12:07:37" (1/1) ... [2024-11-19 00:07:37,526 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-19 00:07:37,528 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-19 00:07:37,528 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-19 00:07:37,528 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-19 00:07:37,529 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 12:07:37" (1/1) ... [2024-11-19 00:07:37,535 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 00:07:37,548 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 00:07:37,566 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) [2024-11-19 00:07:37,573 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 [2024-11-19 00:07:37,624 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-19 00:07:37,625 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-19 00:07:37,626 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-19 00:07:37,626 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-19 00:07:37,626 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-19 00:07:37,627 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-19 00:07:37,805 INFO L238 CfgBuilder]: Building ICFG [2024-11-19 00:07:37,808 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-19 00:07:39,476 INFO L? ?]: Removed 111 outVars from TransFormulas that were not future-live. [2024-11-19 00:07:39,476 INFO L287 CfgBuilder]: Performing block encoding [2024-11-19 00:07:39,502 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-19 00:07:39,502 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-19 00:07:39,503 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 12:07:39 BoogieIcfgContainer [2024-11-19 00:07:39,503 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-19 00:07:39,506 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-19 00:07:39,506 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-19 00:07:39,509 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-19 00:07:39,510 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 12:07:36" (1/3) ... [2024-11-19 00:07:39,511 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b9eb012 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 12:07:39, skipping insertion in model container [2024-11-19 00:07:39,511 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 12:07:37" (2/3) ... [2024-11-19 00:07:39,512 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b9eb012 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 12:07:39, skipping insertion in model container [2024-11-19 00:07:39,512 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 12:07:39" (3/3) ... [2024-11-19 00:07:39,513 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount500_file-81.i [2024-11-19 00:07:39,531 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-19 00:07:39,531 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-19 00:07:39,622 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 00:07:39,630 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;@7f5e8e2e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 00:07:39,631 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-19 00:07:39,638 INFO L276 IsEmpty]: Start isEmpty. Operand has 331 states, 252 states have (on average 1.5476190476190477) internal successors, (390), 253 states have internal predecessors, (390), 76 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 76 states have call predecessors, (76), 76 states have call successors, (76) [2024-11-19 00:07:39,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 529 [2024-11-19 00:07:39,676 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 00:07:39,677 INFO L215 NwaCegarLoop]: trace histogram [76, 76, 76, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 00:07:39,677 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 00:07:39,682 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 00:07:39,683 INFO L85 PathProgramCache]: Analyzing trace with hash -4373028, now seen corresponding path program 1 times [2024-11-19 00:07:39,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 00:07:39,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34567014] [2024-11-19 00:07:39,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 00:07:39,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 00:07:39,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 00:07:40,488 INFO L134 CoverageAnalysis]: Checked inductivity of 11400 backedges. 0 proven. 150 refuted. 0 times theorem prover too weak. 11250 trivial. 0 not checked. [2024-11-19 00:07:40,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 00:07:40,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34567014] [2024-11-19 00:07:40,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [34567014] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 00:07:40,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [717647625] [2024-11-19 00:07:40,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 00:07:40,493 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 00:07:40,493 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 00:07:40,496 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) [2024-11-19 00:07:40,498 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-19 00:07:40,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 00:07:40,948 INFO L255 TraceCheckSpWp]: Trace formula consists of 1304 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-19 00:07:40,969 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 00:07:41,039 INFO L134 CoverageAnalysis]: Checked inductivity of 11400 backedges. 150 proven. 0 refuted. 0 times theorem prover too weak. 11250 trivial. 0 not checked. [2024-11-19 00:07:41,040 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 00:07:41,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [717647625] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 00:07:41,041 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 00:07:41,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-19 00:07:41,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728379487] [2024-11-19 00:07:41,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 00:07:41,052 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-19 00:07:41,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 00:07:41,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-19 00:07:41,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-19 00:07:41,084 INFO L87 Difference]: Start difference. First operand has 331 states, 252 states have (on average 1.5476190476190477) internal successors, (390), 253 states have internal predecessors, (390), 76 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 76 states have call predecessors, (76), 76 states have call successors, (76) Second operand has 2 states, 2 states have (on average 76.5) internal successors, (153), 2 states have internal predecessors, (153), 2 states have call successors, (76), 2 states have call predecessors, (76), 1 states have return successors, (76), 1 states have call predecessors, (76), 2 states have call successors, (76) [2024-11-19 00:07:41,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 00:07:41,170 INFO L93 Difference]: Finished difference Result 653 states and 1150 transitions. [2024-11-19 00:07:41,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-19 00:07:41,174 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 76.5) internal successors, (153), 2 states have internal predecessors, (153), 2 states have call successors, (76), 2 states have call predecessors, (76), 1 states have return successors, (76), 1 states have call predecessors, (76), 2 states have call successors, (76) Word has length 528 [2024-11-19 00:07:41,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 00:07:41,188 INFO L225 Difference]: With dead ends: 653 [2024-11-19 00:07:41,189 INFO L226 Difference]: Without dead ends: 325 [2024-11-19 00:07:41,199 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 529 GetRequests, 529 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-19 00:07:41,204 INFO L432 NwaCegarLoop]: 529 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, 529 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 [2024-11-19 00:07:41,205 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 529 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 00:07:41,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325 states. [2024-11-19 00:07:41,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325 to 325. [2024-11-19 00:07:41,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 325 states, 247 states have (on average 1.5263157894736843) internal successors, (377), 247 states have internal predecessors, (377), 76 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 76 states have call predecessors, (76), 76 states have call successors, (76) [2024-11-19 00:07:41,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 325 states to 325 states and 529 transitions. [2024-11-19 00:07:41,323 INFO L78 Accepts]: Start accepts. Automaton has 325 states and 529 transitions. Word has length 528 [2024-11-19 00:07:41,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 00:07:41,323 INFO L471 AbstractCegarLoop]: Abstraction has 325 states and 529 transitions. [2024-11-19 00:07:41,324 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 76.5) internal successors, (153), 2 states have internal predecessors, (153), 2 states have call successors, (76), 2 states have call predecessors, (76), 1 states have return successors, (76), 1 states have call predecessors, (76), 2 states have call successors, (76) [2024-11-19 00:07:41,324 INFO L276 IsEmpty]: Start isEmpty. Operand 325 states and 529 transitions. [2024-11-19 00:07:41,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 529 [2024-11-19 00:07:41,337 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 00:07:41,338 INFO L215 NwaCegarLoop]: trace histogram [76, 76, 76, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 00:07:41,360 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-19 00:07:41,541 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 [2024-11-19 00:07:41,542 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 00:07:41,543 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 00:07:41,543 INFO L85 PathProgramCache]: Analyzing trace with hash 1272163240, now seen corresponding path program 1 times [2024-11-19 00:07:41,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 00:07:41,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826373008] [2024-11-19 00:07:41,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 00:07:41,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 00:07:41,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 00:07:42,289 INFO L134 CoverageAnalysis]: Checked inductivity of 11400 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11400 trivial. 0 not checked. [2024-11-19 00:07:42,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 00:07:42,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826373008] [2024-11-19 00:07:42,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1826373008] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 00:07:42,290 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 00:07:42,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 00:07:42,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776152093] [2024-11-19 00:07:42,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 00:07:42,292 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 00:07:42,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 00:07:42,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 00:07:42,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 00:07:42,296 INFO L87 Difference]: Start difference. First operand 325 states and 529 transitions. Second operand has 4 states, 4 states have (on average 37.75) internal successors, (151), 4 states have internal predecessors, (151), 1 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 1 states have call predecessors, (76), 1 states have call successors, (76) [2024-11-19 00:07:42,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 00:07:42,763 INFO L93 Difference]: Finished difference Result 1040 states and 1689 transitions. [2024-11-19 00:07:42,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 00:07:42,764 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.75) internal successors, (151), 4 states have internal predecessors, (151), 1 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 1 states have call predecessors, (76), 1 states have call successors, (76) Word has length 528 [2024-11-19 00:07:42,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 00:07:42,771 INFO L225 Difference]: With dead ends: 1040 [2024-11-19 00:07:42,771 INFO L226 Difference]: Without dead ends: 718 [2024-11-19 00:07:42,773 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-19 00:07:42,774 INFO L432 NwaCegarLoop]: 614 mSDtfsCounter, 695 mSDsluCounter, 1027 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 230 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 695 SdHoareTripleChecker+Valid, 1641 SdHoareTripleChecker+Invalid, 276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 230 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-19 00:07:42,774 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [695 Valid, 1641 Invalid, 276 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [230 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-19 00:07:42,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 718 states. [2024-11-19 00:07:42,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 718 to 663. [2024-11-19 00:07:42,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 663 states, 508 states have (on average 1.531496062992126) internal successors, (778), 508 states have internal predecessors, (778), 152 states have call successors, (152), 2 states have call predecessors, (152), 2 states have return successors, (152), 152 states have call predecessors, (152), 152 states have call successors, (152) [2024-11-19 00:07:42,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 663 states to 663 states and 1082 transitions. [2024-11-19 00:07:42,858 INFO L78 Accepts]: Start accepts. Automaton has 663 states and 1082 transitions. Word has length 528 [2024-11-19 00:07:42,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 00:07:42,861 INFO L471 AbstractCegarLoop]: Abstraction has 663 states and 1082 transitions. [2024-11-19 00:07:42,862 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.75) internal successors, (151), 4 states have internal predecessors, (151), 1 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 1 states have call predecessors, (76), 1 states have call successors, (76) [2024-11-19 00:07:42,862 INFO L276 IsEmpty]: Start isEmpty. Operand 663 states and 1082 transitions. [2024-11-19 00:07:42,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 530 [2024-11-19 00:07:42,871 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 00:07:42,872 INFO L215 NwaCegarLoop]: trace histogram [76, 76, 76, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 00:07:42,872 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-19 00:07:42,872 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 00:07:42,873 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 00:07:42,874 INFO L85 PathProgramCache]: Analyzing trace with hash -595285902, now seen corresponding path program 1 times [2024-11-19 00:07:42,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 00:07:42,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767953743] [2024-11-19 00:07:42,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 00:07:42,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 00:07:43,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 00:07:43,320 INFO L134 CoverageAnalysis]: Checked inductivity of 11400 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11400 trivial. 0 not checked. [2024-11-19 00:07:43,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 00:07:43,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767953743] [2024-11-19 00:07:43,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [767953743] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 00:07:43,322 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 00:07:43,322 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 00:07:43,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907628997] [2024-11-19 00:07:43,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 00:07:43,323 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 00:07:43,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 00:07:43,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 00:07:43,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 00:07:43,325 INFO L87 Difference]: Start difference. First operand 663 states and 1082 transitions. Second operand has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 1 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 1 states have call predecessors, (76), 1 states have call successors, (76) [2024-11-19 00:07:43,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 00:07:43,389 INFO L93 Difference]: Finished difference Result 1727 states and 2828 transitions. [2024-11-19 00:07:43,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 00:07:43,390 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 1 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 1 states have call predecessors, (76), 1 states have call successors, (76) Word has length 529 [2024-11-19 00:07:43,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 00:07:43,398 INFO L225 Difference]: With dead ends: 1727 [2024-11-19 00:07:43,400 INFO L226 Difference]: Without dead ends: 1067 [2024-11-19 00:07:43,403 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 [2024-11-19 00:07:43,406 INFO L432 NwaCegarLoop]: 525 mSDtfsCounter, 304 mSDsluCounter, 519 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 304 SdHoareTripleChecker+Valid, 1044 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 00:07:43,406 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [304 Valid, 1044 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 00:07:43,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1067 states. [2024-11-19 00:07:43,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1067 to 715. [2024-11-19 00:07:43,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 715 states, 560 states have (on average 1.5446428571428572) internal successors, (865), 560 states have internal predecessors, (865), 152 states have call successors, (152), 2 states have call predecessors, (152), 2 states have return successors, (152), 152 states have call predecessors, (152), 152 states have call successors, (152) [2024-11-19 00:07:43,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 715 states to 715 states and 1169 transitions. [2024-11-19 00:07:43,515 INFO L78 Accepts]: Start accepts. Automaton has 715 states and 1169 transitions. Word has length 529 [2024-11-19 00:07:43,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 00:07:43,518 INFO L471 AbstractCegarLoop]: Abstraction has 715 states and 1169 transitions. [2024-11-19 00:07:43,519 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 1 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 1 states have call predecessors, (76), 1 states have call successors, (76) [2024-11-19 00:07:43,519 INFO L276 IsEmpty]: Start isEmpty. Operand 715 states and 1169 transitions. [2024-11-19 00:07:43,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 530 [2024-11-19 00:07:43,531 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 00:07:43,531 INFO L215 NwaCegarLoop]: trace histogram [76, 76, 76, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 00:07:43,532 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-19 00:07:43,532 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 00:07:43,533 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 00:07:43,533 INFO L85 PathProgramCache]: Analyzing trace with hash 1281196916, now seen corresponding path program 1 times [2024-11-19 00:07:43,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 00:07:43,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115051024] [2024-11-19 00:07:43,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 00:07:43,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 00:07:43,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 00:07:43,937 INFO L134 CoverageAnalysis]: Checked inductivity of 11400 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11400 trivial. 0 not checked. [2024-11-19 00:07:43,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 00:07:43,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2115051024] [2024-11-19 00:07:43,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2115051024] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 00:07:43,938 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 00:07:43,938 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 00:07:43,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374723145] [2024-11-19 00:07:43,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 00:07:43,939 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 00:07:43,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 00:07:43,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 00:07:43,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 00:07:43,941 INFO L87 Difference]: Start difference. First operand 715 states and 1169 transitions. Second operand has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 1 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 1 states have call predecessors, (76), 1 states have call successors, (76) [2024-11-19 00:07:44,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 00:07:44,052 INFO L93 Difference]: Finished difference Result 1939 states and 3165 transitions. [2024-11-19 00:07:44,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 00:07:44,053 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 1 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 1 states have call predecessors, (76), 1 states have call successors, (76) Word has length 529 [2024-11-19 00:07:44,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 00:07:44,062 INFO L225 Difference]: With dead ends: 1939 [2024-11-19 00:07:44,062 INFO L226 Difference]: Without dead ends: 1227 [2024-11-19 00:07:44,065 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 [2024-11-19 00:07:44,066 INFO L432 NwaCegarLoop]: 764 mSDtfsCounter, 398 mSDsluCounter, 505 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 398 SdHoareTripleChecker+Valid, 1269 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 00:07:44,066 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [398 Valid, 1269 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 00:07:44,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1227 states. [2024-11-19 00:07:44,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1227 to 1223. [2024-11-19 00:07:44,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1223 states, 950 states have (on average 1.5326315789473683) internal successors, (1456), 952 states have internal predecessors, (1456), 268 states have call successors, (268), 4 states have call predecessors, (268), 4 states have return successors, (268), 266 states have call predecessors, (268), 268 states have call successors, (268) [2024-11-19 00:07:44,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1223 states to 1223 states and 1992 transitions. [2024-11-19 00:07:44,192 INFO L78 Accepts]: Start accepts. Automaton has 1223 states and 1992 transitions. Word has length 529 [2024-11-19 00:07:44,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 00:07:44,193 INFO L471 AbstractCegarLoop]: Abstraction has 1223 states and 1992 transitions. [2024-11-19 00:07:44,194 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 1 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 1 states have call predecessors, (76), 1 states have call successors, (76) [2024-11-19 00:07:44,194 INFO L276 IsEmpty]: Start isEmpty. Operand 1223 states and 1992 transitions. [2024-11-19 00:07:44,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 530 [2024-11-19 00:07:44,205 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 00:07:44,205 INFO L215 NwaCegarLoop]: trace histogram [76, 76, 76, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 00:07:44,206 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-19 00:07:44,206 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 00:07:44,206 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 00:07:44,209 INFO L85 PathProgramCache]: Analyzing trace with hash 1358097714, now seen corresponding path program 1 times [2024-11-19 00:07:44,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 00:07:44,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733374455] [2024-11-19 00:07:44,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 00:07:44,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 00:07:44,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 00:07:44,563 INFO L134 CoverageAnalysis]: Checked inductivity of 11400 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11400 trivial. 0 not checked. [2024-11-19 00:07:44,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 00:07:44,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1733374455] [2024-11-19 00:07:44,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1733374455] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 00:07:44,564 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 00:07:44,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 00:07:44,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921963352] [2024-11-19 00:07:44,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 00:07:44,565 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 00:07:44,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 00:07:44,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 00:07:44,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 00:07:44,567 INFO L87 Difference]: Start difference. First operand 1223 states and 1992 transitions. Second operand has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 1 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 1 states have call predecessors, (76), 1 states have call successors, (76) [2024-11-19 00:07:44,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 00:07:44,686 INFO L93 Difference]: Finished difference Result 2455 states and 3990 transitions. [2024-11-19 00:07:44,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 00:07:44,687 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 1 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 1 states have call predecessors, (76), 1 states have call successors, (76) Word has length 529 [2024-11-19 00:07:44,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 00:07:44,697 INFO L225 Difference]: With dead ends: 2455 [2024-11-19 00:07:44,697 INFO L226 Difference]: Without dead ends: 1235 [2024-11-19 00:07:44,701 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 [2024-11-19 00:07:44,702 INFO L432 NwaCegarLoop]: 638 mSDtfsCounter, 367 mSDsluCounter, 505 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 367 SdHoareTripleChecker+Valid, 1143 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 00:07:44,702 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [367 Valid, 1143 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 00:07:44,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1235 states. [2024-11-19 00:07:44,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1235 to 857. [2024-11-19 00:07:44,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 857 states, 700 states have (on average 1.5585714285714285) internal successors, (1091), 700 states have internal predecessors, (1091), 152 states have call successors, (152), 4 states have call predecessors, (152), 4 states have return successors, (152), 152 states have call predecessors, (152), 152 states have call successors, (152) [2024-11-19 00:07:44,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 857 states to 857 states and 1395 transitions. [2024-11-19 00:07:44,763 INFO L78 Accepts]: Start accepts. Automaton has 857 states and 1395 transitions. Word has length 529 [2024-11-19 00:07:44,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 00:07:44,764 INFO L471 AbstractCegarLoop]: Abstraction has 857 states and 1395 transitions. [2024-11-19 00:07:44,764 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 1 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 1 states have call predecessors, (76), 1 states have call successors, (76) [2024-11-19 00:07:44,765 INFO L276 IsEmpty]: Start isEmpty. Operand 857 states and 1395 transitions. [2024-11-19 00:07:44,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 531 [2024-11-19 00:07:44,785 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 00:07:44,785 INFO L215 NwaCegarLoop]: trace histogram [76, 76, 76, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 00:07:44,785 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-19 00:07:44,785 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 00:07:44,786 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 00:07:44,786 INFO L85 PathProgramCache]: Analyzing trace with hash 579547727, now seen corresponding path program 1 times [2024-11-19 00:07:44,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 00:07:44,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444090214] [2024-11-19 00:07:44,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 00:07:44,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 00:07:44,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 00:07:45,744 INFO L134 CoverageAnalysis]: Checked inductivity of 11400 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11400 trivial. 0 not checked. [2024-11-19 00:07:45,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 00:07:45,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [444090214] [2024-11-19 00:07:45,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [444090214] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 00:07:45,745 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 00:07:45,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 00:07:45,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674632284] [2024-11-19 00:07:45,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 00:07:45,746 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 00:07:45,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 00:07:45,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 00:07:45,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 00:07:45,748 INFO L87 Difference]: Start difference. First operand 857 states and 1395 transitions. Second operand has 4 states, 4 states have (on average 38.25) internal successors, (153), 4 states have internal predecessors, (153), 1 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 1 states have call predecessors, (76), 1 states have call successors, (76) [2024-11-19 00:07:46,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 00:07:46,187 INFO L93 Difference]: Finished difference Result 2715 states and 4416 transitions. [2024-11-19 00:07:46,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 00:07:46,188 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.25) internal successors, (153), 4 states have internal predecessors, (153), 1 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 1 states have call predecessors, (76), 1 states have call successors, (76) Word has length 530 [2024-11-19 00:07:46,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 00:07:46,199 INFO L225 Difference]: With dead ends: 2715 [2024-11-19 00:07:46,199 INFO L226 Difference]: Without dead ends: 1861 [2024-11-19 00:07:46,202 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-19 00:07:46,205 INFO L432 NwaCegarLoop]: 639 mSDtfsCounter, 720 mSDsluCounter, 1033 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 231 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 720 SdHoareTripleChecker+Valid, 1672 SdHoareTripleChecker+Invalid, 264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 231 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-19 00:07:46,206 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [720 Valid, 1672 Invalid, 264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [231 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-19 00:07:46,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1861 states. [2024-11-19 00:07:46,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1861 to 1519. [2024-11-19 00:07:46,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1519 states, 1206 states have (on average 1.5348258706467661) internal successors, (1851), 1206 states have internal predecessors, (1851), 304 states have call successors, (304), 8 states have call predecessors, (304), 8 states have return successors, (304), 304 states have call predecessors, (304), 304 states have call successors, (304) [2024-11-19 00:07:46,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1519 states to 1519 states and 2459 transitions. [2024-11-19 00:07:46,380 INFO L78 Accepts]: Start accepts. Automaton has 1519 states and 2459 transitions. Word has length 530 [2024-11-19 00:07:46,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 00:07:46,381 INFO L471 AbstractCegarLoop]: Abstraction has 1519 states and 2459 transitions. [2024-11-19 00:07:46,382 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.25) internal successors, (153), 4 states have internal predecessors, (153), 1 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 1 states have call predecessors, (76), 1 states have call successors, (76) [2024-11-19 00:07:46,382 INFO L276 IsEmpty]: Start isEmpty. Operand 1519 states and 2459 transitions. [2024-11-19 00:07:46,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 532 [2024-11-19 00:07:46,389 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 00:07:46,389 INFO L215 NwaCegarLoop]: trace histogram [76, 76, 76, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 00:07:46,389 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-19 00:07:46,390 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 00:07:46,390 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 00:07:46,391 INFO L85 PathProgramCache]: Analyzing trace with hash 654589622, now seen corresponding path program 1 times [2024-11-19 00:07:46,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 00:07:46,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287461457] [2024-11-19 00:07:46,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 00:07:46,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 00:07:46,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 00:07:47,179 INFO L134 CoverageAnalysis]: Checked inductivity of 11400 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11400 trivial. 0 not checked. [2024-11-19 00:07:47,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 00:07:47,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287461457] [2024-11-19 00:07:47,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1287461457] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 00:07:47,183 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 00:07:47,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 00:07:47,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375296397] [2024-11-19 00:07:47,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 00:07:47,184 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 00:07:47,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 00:07:47,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 00:07:47,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 00:07:47,186 INFO L87 Difference]: Start difference. First operand 1519 states and 2459 transitions. Second operand has 4 states, 4 states have (on average 38.5) internal successors, (154), 4 states have internal predecessors, (154), 1 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 1 states have call predecessors, (76), 1 states have call successors, (76) [2024-11-19 00:07:47,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 00:07:47,688 INFO L93 Difference]: Finished difference Result 3658 states and 5908 transitions. [2024-11-19 00:07:47,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 00:07:47,689 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.5) internal successors, (154), 4 states have internal predecessors, (154), 1 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 1 states have call predecessors, (76), 1 states have call successors, (76) Word has length 531 [2024-11-19 00:07:47,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 00:07:47,702 INFO L225 Difference]: With dead ends: 3658 [2024-11-19 00:07:47,702 INFO L226 Difference]: Without dead ends: 2142 [2024-11-19 00:07:47,709 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-19 00:07:47,710 INFO L432 NwaCegarLoop]: 518 mSDtfsCounter, 429 mSDsluCounter, 1012 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 230 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 429 SdHoareTripleChecker+Valid, 1530 SdHoareTripleChecker+Invalid, 281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 230 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-19 00:07:47,711 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [429 Valid, 1530 Invalid, 281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [230 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-19 00:07:47,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2142 states. [2024-11-19 00:07:47,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2142 to 2028. [2024-11-19 00:07:47,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2028 states, 1637 states have (on average 1.5430665852168601) internal successors, (2526), 1637 states have internal predecessors, (2526), 380 states have call successors, (380), 10 states have call predecessors, (380), 10 states have return successors, (380), 380 states have call predecessors, (380), 380 states have call successors, (380) [2024-11-19 00:07:47,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2028 states to 2028 states and 3286 transitions. [2024-11-19 00:07:47,873 INFO L78 Accepts]: Start accepts. Automaton has 2028 states and 3286 transitions. Word has length 531 [2024-11-19 00:07:47,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 00:07:47,874 INFO L471 AbstractCegarLoop]: Abstraction has 2028 states and 3286 transitions. [2024-11-19 00:07:47,875 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.5) internal successors, (154), 4 states have internal predecessors, (154), 1 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 1 states have call predecessors, (76), 1 states have call successors, (76) [2024-11-19 00:07:47,875 INFO L276 IsEmpty]: Start isEmpty. Operand 2028 states and 3286 transitions. [2024-11-19 00:07:47,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 533 [2024-11-19 00:07:47,879 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 00:07:47,880 INFO L215 NwaCegarLoop]: trace histogram [76, 76, 76, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 00:07:47,880 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-19 00:07:47,880 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 00:07:47,881 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 00:07:47,881 INFO L85 PathProgramCache]: Analyzing trace with hash -1105242953, now seen corresponding path program 1 times [2024-11-19 00:07:47,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 00:07:47,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258420653] [2024-11-19 00:07:47,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 00:07:47,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 00:07:48,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 00:07:48,571 INFO L134 CoverageAnalysis]: Checked inductivity of 11400 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11400 trivial. 0 not checked. [2024-11-19 00:07:48,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 00:07:48,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258420653] [2024-11-19 00:07:48,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [258420653] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 00:07:48,571 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 00:07:48,572 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 00:07:48,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996380953] [2024-11-19 00:07:48,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 00:07:48,572 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 00:07:48,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 00:07:48,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 00:07:48,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 00:07:48,574 INFO L87 Difference]: Start difference. First operand 2028 states and 3286 transitions. Second operand has 4 states, 4 states have (on average 38.75) internal successors, (155), 4 states have internal predecessors, (155), 1 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 1 states have call predecessors, (76), 1 states have call successors, (76) [2024-11-19 00:07:49,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 00:07:49,062 INFO L93 Difference]: Finished difference Result 4014 states and 6489 transitions. [2024-11-19 00:07:49,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 00:07:49,063 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.75) internal successors, (155), 4 states have internal predecessors, (155), 1 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 1 states have call predecessors, (76), 1 states have call successors, (76) Word has length 532 [2024-11-19 00:07:49,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 00:07:49,076 INFO L225 Difference]: With dead ends: 4014 [2024-11-19 00:07:49,077 INFO L226 Difference]: Without dead ends: 2142 [2024-11-19 00:07:49,082 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-19 00:07:49,084 INFO L432 NwaCegarLoop]: 520 mSDtfsCounter, 425 mSDsluCounter, 1013 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 230 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 425 SdHoareTripleChecker+Valid, 1533 SdHoareTripleChecker+Invalid, 278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 230 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-19 00:07:49,084 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [425 Valid, 1533 Invalid, 278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [230 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-19 00:07:49,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2142 states. [2024-11-19 00:07:49,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2142 to 2032. [2024-11-19 00:07:49,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2032 states, 1641 states have (on average 1.5411334552102376) internal successors, (2529), 1641 states have internal predecessors, (2529), 380 states have call successors, (380), 10 states have call predecessors, (380), 10 states have return successors, (380), 380 states have call predecessors, (380), 380 states have call successors, (380) [2024-11-19 00:07:49,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2032 states to 2032 states and 3289 transitions. [2024-11-19 00:07:49,250 INFO L78 Accepts]: Start accepts. Automaton has 2032 states and 3289 transitions. Word has length 532 [2024-11-19 00:07:49,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 00:07:49,251 INFO L471 AbstractCegarLoop]: Abstraction has 2032 states and 3289 transitions. [2024-11-19 00:07:49,252 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.75) internal successors, (155), 4 states have internal predecessors, (155), 1 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 1 states have call predecessors, (76), 1 states have call successors, (76) [2024-11-19 00:07:49,252 INFO L276 IsEmpty]: Start isEmpty. Operand 2032 states and 3289 transitions. [2024-11-19 00:07:49,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 534 [2024-11-19 00:07:49,256 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 00:07:49,257 INFO L215 NwaCegarLoop]: trace histogram [76, 76, 76, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 00:07:49,257 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-19 00:07:49,257 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 00:07:49,257 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 00:07:49,258 INFO L85 PathProgramCache]: Analyzing trace with hash 1558616345, now seen corresponding path program 1 times [2024-11-19 00:07:49,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 00:07:49,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753392926] [2024-11-19 00:07:49,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 00:07:49,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 00:07:49,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 00:07:50,197 INFO L134 CoverageAnalysis]: Checked inductivity of 11400 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11400 trivial. 0 not checked. [2024-11-19 00:07:50,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 00:07:50,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753392926] [2024-11-19 00:07:50,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1753392926] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 00:07:50,198 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 00:07:50,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 00:07:50,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483162154] [2024-11-19 00:07:50,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 00:07:50,202 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 00:07:50,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 00:07:50,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 00:07:50,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 00:07:50,204 INFO L87 Difference]: Start difference. First operand 2032 states and 3289 transitions. Second operand has 4 states, 4 states have (on average 39.0) internal successors, (156), 4 states have internal predecessors, (156), 1 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 1 states have call predecessors, (76), 1 states have call successors, (76) [2024-11-19 00:07:50,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 00:07:50,791 INFO L93 Difference]: Finished difference Result 5963 states and 9639 transitions. [2024-11-19 00:07:50,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 00:07:50,792 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 39.0) internal successors, (156), 4 states have internal predecessors, (156), 1 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 1 states have call predecessors, (76), 1 states have call successors, (76) Word has length 533 [2024-11-19 00:07:50,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 00:07:50,812 INFO L225 Difference]: With dead ends: 5963 [2024-11-19 00:07:50,813 INFO L226 Difference]: Without dead ends: 4078 [2024-11-19 00:07:50,818 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-19 00:07:50,819 INFO L432 NwaCegarLoop]: 632 mSDtfsCounter, 687 mSDsluCounter, 1020 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 230 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 687 SdHoareTripleChecker+Valid, 1652 SdHoareTripleChecker+Invalid, 290 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 230 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-19 00:07:50,819 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [687 Valid, 1652 Invalid, 290 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [230 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-19 00:07:50,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4078 states. [2024-11-19 00:07:51,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4078 to 3874. [2024-11-19 00:07:51,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3874 states, 3171 states have (on average 1.54241564175339) internal successors, (4891), 3171 states have internal predecessors, (4891), 684 states have call successors, (684), 18 states have call predecessors, (684), 18 states have return successors, (684), 684 states have call predecessors, (684), 684 states have call successors, (684) [2024-11-19 00:07:51,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3874 states to 3874 states and 6259 transitions. [2024-11-19 00:07:51,102 INFO L78 Accepts]: Start accepts. Automaton has 3874 states and 6259 transitions. Word has length 533 [2024-11-19 00:07:51,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 00:07:51,104 INFO L471 AbstractCegarLoop]: Abstraction has 3874 states and 6259 transitions. [2024-11-19 00:07:51,104 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.0) internal successors, (156), 4 states have internal predecessors, (156), 1 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 1 states have call predecessors, (76), 1 states have call successors, (76) [2024-11-19 00:07:51,104 INFO L276 IsEmpty]: Start isEmpty. Operand 3874 states and 6259 transitions. [2024-11-19 00:07:51,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 535 [2024-11-19 00:07:51,109 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 00:07:51,110 INFO L215 NwaCegarLoop]: trace histogram [76, 76, 76, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 00:07:51,110 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-19 00:07:51,110 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 00:07:51,110 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 00:07:51,111 INFO L85 PathProgramCache]: Analyzing trace with hash -1455378092, now seen corresponding path program 1 times [2024-11-19 00:07:51,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 00:07:51,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589887172] [2024-11-19 00:07:51,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 00:07:51,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 00:07:51,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 00:07:52,101 INFO L134 CoverageAnalysis]: Checked inductivity of 11400 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11400 trivial. 0 not checked. [2024-11-19 00:07:52,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 00:07:52,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589887172] [2024-11-19 00:07:52,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [589887172] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 00:07:52,103 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 00:07:52,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-19 00:07:52,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801015791] [2024-11-19 00:07:52,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 00:07:52,104 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 00:07:52,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 00:07:52,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 00:07:52,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-19 00:07:52,106 INFO L87 Difference]: Start difference. First operand 3874 states and 6259 transitions. Second operand has 5 states, 5 states have (on average 31.4) internal successors, (157), 5 states have internal predecessors, (157), 1 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 1 states have call predecessors, (76), 1 states have call successors, (76) [2024-11-19 00:07:52,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 00:07:52,837 INFO L93 Difference]: Finished difference Result 7909 states and 12739 transitions. [2024-11-19 00:07:52,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 00:07:52,838 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 5 states have internal predecessors, (157), 1 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 1 states have call predecessors, (76), 1 states have call successors, (76) Word has length 534 [2024-11-19 00:07:52,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 00:07:52,863 INFO L225 Difference]: With dead ends: 7909 [2024-11-19 00:07:52,864 INFO L226 Difference]: Without dead ends: 4182 [2024-11-19 00:07:52,875 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-19 00:07:52,876 INFO L432 NwaCegarLoop]: 628 mSDtfsCounter, 678 mSDsluCounter, 1519 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 230 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 678 SdHoareTripleChecker+Valid, 2147 SdHoareTripleChecker+Invalid, 317 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 230 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-19 00:07:52,877 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [678 Valid, 2147 Invalid, 317 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [230 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-19 00:07:52,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4182 states. [2024-11-19 00:07:53,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4182 to 3884. [2024-11-19 00:07:53,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3884 states, 3181 states have (on average 1.5363093366865765) internal successors, (4887), 3181 states have internal predecessors, (4887), 684 states have call successors, (684), 18 states have call predecessors, (684), 18 states have return successors, (684), 684 states have call predecessors, (684), 684 states have call successors, (684) [2024-11-19 00:07:53,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3884 states to 3884 states and 6255 transitions. [2024-11-19 00:07:53,169 INFO L78 Accepts]: Start accepts. Automaton has 3884 states and 6255 transitions. Word has length 534 [2024-11-19 00:07:53,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 00:07:53,171 INFO L471 AbstractCegarLoop]: Abstraction has 3884 states and 6255 transitions. [2024-11-19 00:07:53,171 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 5 states have internal predecessors, (157), 1 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 1 states have call predecessors, (76), 1 states have call successors, (76) [2024-11-19 00:07:53,171 INFO L276 IsEmpty]: Start isEmpty. Operand 3884 states and 6255 transitions. [2024-11-19 00:07:53,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 536 [2024-11-19 00:07:53,176 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 00:07:53,176 INFO L215 NwaCegarLoop]: trace histogram [76, 76, 76, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 00:07:53,176 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-19 00:07:53,176 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 00:07:53,177 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 00:07:53,177 INFO L85 PathProgramCache]: Analyzing trace with hash 1035437270, now seen corresponding path program 1 times [2024-11-19 00:07:53,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 00:07:53,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819265506] [2024-11-19 00:07:53,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 00:07:53,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 00:07:54,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 00:07:56,280 INFO L134 CoverageAnalysis]: Checked inductivity of 11400 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11400 trivial. 0 not checked. [2024-11-19 00:07:56,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 00:07:56,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [819265506] [2024-11-19 00:07:56,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [819265506] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 00:07:56,281 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 00:07:56,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2024-11-19 00:07:56,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512885983] [2024-11-19 00:07:56,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 00:07:56,282 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-19 00:07:56,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 00:07:56,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-19 00:07:56,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=208, Unknown=0, NotChecked=0, Total=240 [2024-11-19 00:07:56,285 INFO L87 Difference]: Start difference. First operand 3884 states and 6255 transitions. Second operand has 16 states, 16 states have (on average 9.875) internal successors, (158), 16 states have internal predecessors, (158), 1 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 1 states have call predecessors, (76), 1 states have call successors, (76) [2024-11-19 00:08:03,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 00:08:03,613 INFO L93 Difference]: Finished difference Result 21910 states and 35146 transitions. [2024-11-19 00:08:03,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2024-11-19 00:08:03,614 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 9.875) internal successors, (158), 16 states have internal predecessors, (158), 1 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 1 states have call predecessors, (76), 1 states have call successors, (76) Word has length 535 [2024-11-19 00:08:03,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 00:08:03,728 INFO L225 Difference]: With dead ends: 21910 [2024-11-19 00:08:03,729 INFO L226 Difference]: Without dead ends: 18531 [2024-11-19 00:08:03,754 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 403 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=317, Invalid=1575, Unknown=0, NotChecked=0, Total=1892 [2024-11-19 00:08:03,755 INFO L432 NwaCegarLoop]: 960 mSDtfsCounter, 4609 mSDsluCounter, 8153 mSDsCounter, 0 mSdLazyCounter, 4861 mSolverCounterSat, 932 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4609 SdHoareTripleChecker+Valid, 9113 SdHoareTripleChecker+Invalid, 5793 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 932 IncrementalHoareTripleChecker+Valid, 4861 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2024-11-19 00:08:03,756 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4609 Valid, 9113 Invalid, 5793 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [932 Valid, 4861 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time] [2024-11-19 00:08:03,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18531 states. [2024-11-19 00:08:04,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18531 to 16335. [2024-11-19 00:08:05,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16335 states, 14180 states have (on average 1.5579689703808182) internal successors, (22092), 14208 states have internal predecessors, (22092), 2064 states have call successors, (2064), 90 states have call predecessors, (2064), 90 states have return successors, (2064), 2036 states have call predecessors, (2064), 2064 states have call successors, (2064) [2024-11-19 00:08:05,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16335 states to 16335 states and 26220 transitions. [2024-11-19 00:08:05,109 INFO L78 Accepts]: Start accepts. Automaton has 16335 states and 26220 transitions. Word has length 535 [2024-11-19 00:08:05,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 00:08:05,110 INFO L471 AbstractCegarLoop]: Abstraction has 16335 states and 26220 transitions. [2024-11-19 00:08:05,112 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 9.875) internal successors, (158), 16 states have internal predecessors, (158), 1 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 1 states have call predecessors, (76), 1 states have call successors, (76) [2024-11-19 00:08:05,112 INFO L276 IsEmpty]: Start isEmpty. Operand 16335 states and 26220 transitions. [2024-11-19 00:08:05,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 536 [2024-11-19 00:08:05,125 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 00:08:05,125 INFO L215 NwaCegarLoop]: trace histogram [76, 76, 76, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 00:08:05,126 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-19 00:08:05,126 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 00:08:05,128 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 00:08:05,128 INFO L85 PathProgramCache]: Analyzing trace with hash 375599613, now seen corresponding path program 1 times [2024-11-19 00:08:05,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 00:08:05,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066119808] [2024-11-19 00:08:05,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 00:08:05,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 00:08:05,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 00:08:06,356 INFO L134 CoverageAnalysis]: Checked inductivity of 11400 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11400 trivial. 0 not checked. [2024-11-19 00:08:06,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 00:08:06,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1066119808] [2024-11-19 00:08:06,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1066119808] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 00:08:06,357 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 00:08:06,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-19 00:08:06,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695774318] [2024-11-19 00:08:06,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 00:08:06,358 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 00:08:06,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 00:08:06,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 00:08:06,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-19 00:08:06,359 INFO L87 Difference]: Start difference. First operand 16335 states and 26220 transitions. Second operand has 5 states, 5 states have (on average 31.6) internal successors, (158), 5 states have internal predecessors, (158), 1 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 1 states have call predecessors, (76), 1 states have call successors, (76) [2024-11-19 00:08:09,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 00:08:09,043 INFO L93 Difference]: Finished difference Result 41422 states and 66436 transitions. [2024-11-19 00:08:09,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 00:08:09,044 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.6) internal successors, (158), 5 states have internal predecessors, (158), 1 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 1 states have call predecessors, (76), 1 states have call successors, (76) Word has length 535 [2024-11-19 00:08:09,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 00:08:09,162 INFO L225 Difference]: With dead ends: 41422 [2024-11-19 00:08:09,163 INFO L226 Difference]: Without dead ends: 26257 [2024-11-19 00:08:09,208 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-19 00:08:09,210 INFO L432 NwaCegarLoop]: 851 mSDtfsCounter, 1290 mSDsluCounter, 1631 mSDsCounter, 0 mSdLazyCounter, 699 mSolverCounterSat, 230 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1290 SdHoareTripleChecker+Valid, 2482 SdHoareTripleChecker+Invalid, 929 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 230 IncrementalHoareTripleChecker+Valid, 699 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-19 00:08:09,210 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1290 Valid, 2482 Invalid, 929 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [230 Valid, 699 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-19 00:08:09,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26257 states. [2024-11-19 00:08:10,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26257 to 25361. [2024-11-19 00:08:10,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25361 states, 21830 states have (on average 1.5514887769125056) internal successors, (33869), 21878 states have internal predecessors, (33869), 3384 states have call successors, (3384), 146 states have call predecessors, (3384), 146 states have return successors, (3384), 3336 states have call predecessors, (3384), 3384 states have call successors, (3384) [2024-11-19 00:08:10,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25361 states to 25361 states and 40637 transitions. [2024-11-19 00:08:10,988 INFO L78 Accepts]: Start accepts. Automaton has 25361 states and 40637 transitions. Word has length 535 [2024-11-19 00:08:10,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 00:08:10,989 INFO L471 AbstractCegarLoop]: Abstraction has 25361 states and 40637 transitions. [2024-11-19 00:08:10,989 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.6) internal successors, (158), 5 states have internal predecessors, (158), 1 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 1 states have call predecessors, (76), 1 states have call successors, (76) [2024-11-19 00:08:10,990 INFO L276 IsEmpty]: Start isEmpty. Operand 25361 states and 40637 transitions. [2024-11-19 00:08:11,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 536 [2024-11-19 00:08:11,001 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 00:08:11,001 INFO L215 NwaCegarLoop]: trace histogram [76, 76, 76, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 00:08:11,001 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-19 00:08:11,001 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 00:08:11,002 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 00:08:11,002 INFO L85 PathProgramCache]: Analyzing trace with hash -1382466796, now seen corresponding path program 1 times [2024-11-19 00:08:11,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 00:08:11,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1204488660] [2024-11-19 00:08:11,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 00:08:11,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 00:08:11,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 00:08:12,939 INFO L134 CoverageAnalysis]: Checked inductivity of 11400 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11400 trivial. 0 not checked. [2024-11-19 00:08:12,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 00:08:12,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1204488660] [2024-11-19 00:08:12,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1204488660] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 00:08:12,940 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 00:08:12,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-19 00:08:12,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72839585] [2024-11-19 00:08:12,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 00:08:12,941 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-19 00:08:12,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 00:08:12,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-19 00:08:12,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-19 00:08:12,942 INFO L87 Difference]: Start difference. First operand 25361 states and 40637 transitions. Second operand has 8 states, 8 states have (on average 19.75) internal successors, (158), 8 states have internal predecessors, (158), 2 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 2 states have call predecessors, (76), 2 states have call successors, (76) [2024-11-19 00:08:17,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 00:08:17,210 INFO L93 Difference]: Finished difference Result 44486 states and 71212 transitions. [2024-11-19 00:08:17,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-19 00:08:17,211 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 19.75) internal successors, (158), 8 states have internal predecessors, (158), 2 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 2 states have call predecessors, (76), 2 states have call successors, (76) Word has length 535 [2024-11-19 00:08:17,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 00:08:17,320 INFO L225 Difference]: With dead ends: 44486 [2024-11-19 00:08:17,321 INFO L226 Difference]: Without dead ends: 34520 [2024-11-19 00:08:17,350 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2024-11-19 00:08:17,350 INFO L432 NwaCegarLoop]: 785 mSDtfsCounter, 2874 mSDsluCounter, 2097 mSDsCounter, 0 mSdLazyCounter, 1907 mSolverCounterSat, 550 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2874 SdHoareTripleChecker+Valid, 2882 SdHoareTripleChecker+Invalid, 2457 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 550 IncrementalHoareTripleChecker+Valid, 1907 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-11-19 00:08:17,351 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2874 Valid, 2882 Invalid, 2457 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [550 Valid, 1907 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-11-19 00:08:17,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34520 states. [2024-11-19 00:08:19,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34520 to 29501. [2024-11-19 00:08:19,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29501 states, 25505 states have (on average 1.5547931778082729) internal successors, (39655), 25565 states have internal predecessors, (39655), 3812 states have call successors, (3812), 183 states have call predecessors, (3812), 183 states have return successors, (3812), 3752 states have call predecessors, (3812), 3812 states have call successors, (3812) [2024-11-19 00:08:19,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29501 states to 29501 states and 47279 transitions. [2024-11-19 00:08:19,627 INFO L78 Accepts]: Start accepts. Automaton has 29501 states and 47279 transitions. Word has length 535 [2024-11-19 00:08:19,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 00:08:19,629 INFO L471 AbstractCegarLoop]: Abstraction has 29501 states and 47279 transitions. [2024-11-19 00:08:19,629 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.75) internal successors, (158), 8 states have internal predecessors, (158), 2 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 2 states have call predecessors, (76), 2 states have call successors, (76) [2024-11-19 00:08:19,629 INFO L276 IsEmpty]: Start isEmpty. Operand 29501 states and 47279 transitions. [2024-11-19 00:08:19,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 537 [2024-11-19 00:08:19,645 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 00:08:19,645 INFO L215 NwaCegarLoop]: trace histogram [76, 76, 76, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 00:08:19,645 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-19 00:08:19,646 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 00:08:19,646 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 00:08:19,646 INFO L85 PathProgramCache]: Analyzing trace with hash -844340419, now seen corresponding path program 1 times [2024-11-19 00:08:19,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 00:08:19,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769249401] [2024-11-19 00:08:19,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 00:08:19,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 00:08:21,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 00:08:21,939 INFO L134 CoverageAnalysis]: Checked inductivity of 11400 backedges. 33 proven. 192 refuted. 0 times theorem prover too weak. 11175 trivial. 0 not checked. [2024-11-19 00:08:21,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 00:08:21,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769249401] [2024-11-19 00:08:21,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1769249401] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 00:08:21,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [264471175] [2024-11-19 00:08:21,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 00:08:21,941 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 00:08:21,941 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 00:08:21,943 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) [2024-11-19 00:08:21,944 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-19 00:08:22,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 00:08:22,380 INFO L255 TraceCheckSpWp]: Trace formula consists of 1318 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-11-19 00:08:22,398 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 00:08:24,889 INFO L134 CoverageAnalysis]: Checked inductivity of 11400 backedges. 7511 proven. 399 refuted. 0 times theorem prover too weak. 3490 trivial. 0 not checked. [2024-11-19 00:08:24,890 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 00:08:26,712 INFO L134 CoverageAnalysis]: Checked inductivity of 11400 backedges. 162 proven. 285 refuted. 0 times theorem prover too weak. 10953 trivial. 0 not checked. [2024-11-19 00:08:26,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [264471175] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 00:08:26,713 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 00:08:26,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 18, 17] total 34 [2024-11-19 00:08:26,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215299604] [2024-11-19 00:08:26,713 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 00:08:26,715 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-19 00:08:26,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 00:08:26,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-19 00:08:26,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=262, Invalid=860, Unknown=0, NotChecked=0, Total=1122 [2024-11-19 00:08:26,717 INFO L87 Difference]: Start difference. First operand 29501 states and 47279 transitions. Second operand has 34 states, 34 states have (on average 11.058823529411764) internal successors, (376), 34 states have internal predecessors, (376), 8 states have call successors, (200), 4 states have call predecessors, (200), 9 states have return successors, (202), 8 states have call predecessors, (202), 8 states have call successors, (202)