./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cambridge.7.prop2-func-interl.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c7c6ca5d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cambridge.7.prop2-func-interl.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 594ba7f2cd795469cb4364f0ae6b5499d8c7bf93ae5cdd1c268db95fc5a86c8c --- Real Ultimate output --- This is Ultimate 0.2.5-?-c7c6ca5-m [2024-11-08 18:09:05,174 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-08 18:09:05,237 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2024-11-08 18:09:05,241 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-08 18:09:05,242 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-08 18:09:05,262 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-08 18:09:05,263 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-08 18:09:05,263 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-08 18:09:05,264 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-08 18:09:05,264 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-08 18:09:05,264 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-08 18:09:05,265 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-08 18:09:05,265 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-08 18:09:05,265 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-08 18:09:05,266 INFO L153 SettingsManager]: * Use SBE=true [2024-11-08 18:09:05,266 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-08 18:09:05,266 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-08 18:09:05,266 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-08 18:09:05,267 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-08 18:09:05,267 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-08 18:09:05,267 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-08 18:09:05,268 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-08 18:09:05,269 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-08 18:09:05,269 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-08 18:09:05,269 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-08 18:09:05,270 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-08 18:09:05,270 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-08 18:09:05,270 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-08 18:09:05,270 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-08 18:09:05,271 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 18:09:05,271 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-08 18:09:05,271 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-08 18:09:05,272 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-08 18:09:05,272 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-08 18:09:05,272 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-08 18:09:05,272 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-08 18:09:05,273 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-08 18:09:05,273 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-08 18:09:05,273 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-08 18:09:05,273 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 594ba7f2cd795469cb4364f0ae6b5499d8c7bf93ae5cdd1c268db95fc5a86c8c [2024-11-08 18:09:05,499 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-08 18:09:05,524 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-08 18:09:05,528 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-08 18:09:05,529 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-08 18:09:05,530 INFO L274 PluginConnector]: CDTParser initialized [2024-11-08 18:09:05,531 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cambridge.7.prop2-func-interl.c [2024-11-08 18:09:07,055 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-08 18:09:07,462 INFO L384 CDTParser]: Found 1 translation units. [2024-11-08 18:09:07,463 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cambridge.7.prop2-func-interl.c [2024-11-08 18:09:07,498 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3d5a00655/ea9f75c1e80948d5a35ef7107d3f7f7a/FLAGe2bc1659e [2024-11-08 18:09:07,514 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3d5a00655/ea9f75c1e80948d5a35ef7107d3f7f7a [2024-11-08 18:09:07,518 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-08 18:09:07,519 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-08 18:09:07,520 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-08 18:09:07,521 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-08 18:09:07,525 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-08 18:09:07,526 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 06:09:07" (1/1) ... [2024-11-08 18:09:07,527 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c519f6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:09:07, skipping insertion in model container [2024-11-08 18:09:07,527 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 06:09:07" (1/1) ... [2024-11-08 18:09:07,686 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-08 18:09:07,936 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cambridge.7.prop2-func-interl.c[1176,1189] [2024-11-08 18:09:08,855 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 18:09:08,866 INFO L200 MainTranslator]: Completed pre-run [2024-11-08 18:09:08,877 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cambridge.7.prop2-func-interl.c[1176,1189] [2024-11-08 18:09:09,392 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 18:09:09,407 INFO L204 MainTranslator]: Completed translation [2024-11-08 18:09:09,408 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:09:09 WrapperNode [2024-11-08 18:09:09,408 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-08 18:09:09,409 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-08 18:09:09,409 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-08 18:09:09,409 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-08 18:09:09,416 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:09:09" (1/1) ... [2024-11-08 18:09:09,633 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:09:09" (1/1) ... [2024-11-08 18:09:12,623 INFO L138 Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 23543 [2024-11-08 18:09:12,624 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-08 18:09:12,625 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-08 18:09:12,625 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-08 18:09:12,625 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-08 18:09:12,638 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:09:09" (1/1) ... [2024-11-08 18:09:12,639 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:09:09" (1/1) ... [2024-11-08 18:09:13,487 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:09:09" (1/1) ... [2024-11-08 18:09:13,931 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]. [2024-11-08 18:09:13,932 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:09:09" (1/1) ... [2024-11-08 18:09:13,932 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:09:09" (1/1) ... [2024-11-08 18:09:14,696 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:09:09" (1/1) ... [2024-11-08 18:09:14,760 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:09:09" (1/1) ... [2024-11-08 18:09:14,874 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:09:09" (1/1) ... [2024-11-08 18:09:14,968 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:09:09" (1/1) ... [2024-11-08 18:09:15,348 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-08 18:09:15,349 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-08 18:09:15,349 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-08 18:09:15,349 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-08 18:09:15,350 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:09:09" (1/1) ... [2024-11-08 18:09:15,354 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 18:09:15,368 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 18:09:15,395 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) [2024-11-08 18:09:15,399 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 [2024-11-08 18:09:15,436 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-08 18:09:15,437 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-08 18:09:15,437 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-08 18:09:15,437 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-08 18:09:16,493 INFO L238 CfgBuilder]: Building ICFG [2024-11-08 18:09:16,495 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-08 18:09:55,208 INFO L? ?]: Removed 14093 outVars from TransFormulas that were not future-live. [2024-11-08 18:09:55,208 INFO L287 CfgBuilder]: Performing block encoding [2024-11-08 18:09:55,294 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-08 18:09:55,295 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-08 18:09:55,295 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 06:09:55 BoogieIcfgContainer [2024-11-08 18:09:55,296 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-08 18:09:55,299 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-08 18:09:55,299 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-08 18:09:55,302 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-08 18:09:55,302 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.11 06:09:07" (1/3) ... [2024-11-08 18:09:55,304 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12f6930d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 06:09:55, skipping insertion in model container [2024-11-08 18:09:55,304 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:09:09" (2/3) ... [2024-11-08 18:09:55,304 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12f6930d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 06:09:55, skipping insertion in model container [2024-11-08 18:09:55,304 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 06:09:55" (3/3) ... [2024-11-08 18:09:55,306 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.cambridge.7.prop2-func-interl.c [2024-11-08 18:09:55,320 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-08 18:09:55,321 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-08 18:09:55,484 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-08 18:09:55,491 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;@7109441e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-08 18:09:55,491 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-08 18:09:55,513 INFO L276 IsEmpty]: Start isEmpty. Operand has 7406 states, 7404 states have (on average 1.5012155591572123) internal successors, (11115), 7405 states have internal predecessors, (11115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:09:55,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2024-11-08 18:09:55,535 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:09:55,536 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:09:55,536 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:09:55,541 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:09:55,542 INFO L85 PathProgramCache]: Analyzing trace with hash -1491099935, now seen corresponding path program 1 times [2024-11-08 18:09:55,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:09:55,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877366606] [2024-11-08 18:09:55,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:09:55,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:09:55,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:09:57,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:09:57,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:09:57,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877366606] [2024-11-08 18:09:57,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1877366606] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:09:57,189 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:09:57,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 18:09:57,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670982868] [2024-11-08 18:09:57,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:09:57,196 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 18:09:57,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:09:57,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 18:09:57,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 18:09:57,235 INFO L87 Difference]: Start difference. First operand has 7406 states, 7404 states have (on average 1.5012155591572123) internal successors, (11115), 7405 states have internal predecessors, (11115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 63.75) internal successors, (255), 4 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:09:57,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:09:57,505 INFO L93 Difference]: Finished difference Result 14513 states and 21785 transitions. [2024-11-08 18:09:57,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 18:09:57,508 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 63.75) internal successors, (255), 4 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 255 [2024-11-08 18:09:57,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:09:57,551 INFO L225 Difference]: With dead ends: 14513 [2024-11-08 18:09:57,552 INFO L226 Difference]: Without dead ends: 7405 [2024-11-08 18:09:57,571 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 18:09:57,576 INFO L432 NwaCegarLoop]: 11109 mSDtfsCounter, 0 mSDsluCounter, 22212 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 33321 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 18:09:57,577 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 33321 Invalid, 11 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 18:09:57,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7405 states. [2024-11-08 18:09:57,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7405 to 7405. [2024-11-08 18:09:57,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7405 states, 7404 states have (on average 1.500945434900054) internal successors, (11113), 7404 states have internal predecessors, (11113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:09:57,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7405 states to 7405 states and 11113 transitions. [2024-11-08 18:09:57,794 INFO L78 Accepts]: Start accepts. Automaton has 7405 states and 11113 transitions. Word has length 255 [2024-11-08 18:09:57,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:09:57,796 INFO L471 AbstractCegarLoop]: Abstraction has 7405 states and 11113 transitions. [2024-11-08 18:09:57,796 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 63.75) internal successors, (255), 4 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:09:57,796 INFO L276 IsEmpty]: Start isEmpty. Operand 7405 states and 11113 transitions. [2024-11-08 18:09:57,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2024-11-08 18:09:57,805 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:09:57,805 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:09:57,805 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-08 18:09:57,805 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:09:57,806 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:09:57,806 INFO L85 PathProgramCache]: Analyzing trace with hash 1022239049, now seen corresponding path program 1 times [2024-11-08 18:09:57,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:09:57,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971909817] [2024-11-08 18:09:57,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:09:57,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:09:57,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:09:58,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:09:58,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:09:58,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971909817] [2024-11-08 18:09:58,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1971909817] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:09:58,303 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:09:58,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 18:09:58,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331944358] [2024-11-08 18:09:58,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:09:58,305 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 18:09:58,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:09:58,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 18:09:58,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 18:09:58,307 INFO L87 Difference]: Start difference. First operand 7405 states and 11113 transitions. Second operand has 4 states, 4 states have (on average 64.0) internal successors, (256), 4 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:09:58,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:09:58,499 INFO L93 Difference]: Finished difference Result 14514 states and 21783 transitions. [2024-11-08 18:09:58,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 18:09:58,500 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 64.0) internal successors, (256), 4 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 256 [2024-11-08 18:09:58,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:09:58,522 INFO L225 Difference]: With dead ends: 14514 [2024-11-08 18:09:58,522 INFO L226 Difference]: Without dead ends: 7407 [2024-11-08 18:09:58,534 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 18:09:58,536 INFO L432 NwaCegarLoop]: 11109 mSDtfsCounter, 0 mSDsluCounter, 22208 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 33317 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 18:09:58,536 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 33317 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 18:09:58,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7407 states. [2024-11-08 18:09:58,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7407 to 7407. [2024-11-08 18:09:58,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7407 states, 7406 states have (on average 1.5008101539292467) internal successors, (11115), 7406 states have internal predecessors, (11115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:09:58,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7407 states to 7407 states and 11115 transitions. [2024-11-08 18:09:58,683 INFO L78 Accepts]: Start accepts. Automaton has 7407 states and 11115 transitions. Word has length 256 [2024-11-08 18:09:58,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:09:58,684 INFO L471 AbstractCegarLoop]: Abstraction has 7407 states and 11115 transitions. [2024-11-08 18:09:58,684 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 64.0) internal successors, (256), 4 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:09:58,684 INFO L276 IsEmpty]: Start isEmpty. Operand 7407 states and 11115 transitions. [2024-11-08 18:09:58,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2024-11-08 18:09:58,689 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:09:58,689 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:09:58,689 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-08 18:09:58,690 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:09:58,690 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:09:58,691 INFO L85 PathProgramCache]: Analyzing trace with hash 526675130, now seen corresponding path program 1 times [2024-11-08 18:09:58,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:09:58,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378322466] [2024-11-08 18:09:58,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:09:58,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:09:58,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:09:59,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:09:59,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:09:59,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378322466] [2024-11-08 18:09:59,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [378322466] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:09:59,112 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:09:59,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 18:09:59,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929521103] [2024-11-08 18:09:59,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:09:59,113 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 18:09:59,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:09:59,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 18:09:59,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 18:09:59,115 INFO L87 Difference]: Start difference. First operand 7407 states and 11115 transitions. Second operand has 4 states, 4 states have (on average 64.25) internal successors, (257), 4 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:09:59,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:09:59,287 INFO L93 Difference]: Finished difference Result 14518 states and 21787 transitions. [2024-11-08 18:09:59,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 18:09:59,288 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 64.25) internal successors, (257), 4 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 257 [2024-11-08 18:09:59,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:09:59,308 INFO L225 Difference]: With dead ends: 14518 [2024-11-08 18:09:59,308 INFO L226 Difference]: Without dead ends: 7409 [2024-11-08 18:09:59,320 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 18:09:59,321 INFO L432 NwaCegarLoop]: 11109 mSDtfsCounter, 0 mSDsluCounter, 22202 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 33311 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 18:09:59,323 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 33311 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 18:09:59,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7409 states. [2024-11-08 18:09:59,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7409 to 7409. [2024-11-08 18:09:59,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7409 states, 7408 states have (on average 1.5006749460043196) internal successors, (11117), 7408 states have internal predecessors, (11117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:09:59,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7409 states to 7409 states and 11117 transitions. [2024-11-08 18:09:59,469 INFO L78 Accepts]: Start accepts. Automaton has 7409 states and 11117 transitions. Word has length 257 [2024-11-08 18:09:59,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:09:59,470 INFO L471 AbstractCegarLoop]: Abstraction has 7409 states and 11117 transitions. [2024-11-08 18:09:59,470 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 64.25) internal successors, (257), 4 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:09:59,470 INFO L276 IsEmpty]: Start isEmpty. Operand 7409 states and 11117 transitions. [2024-11-08 18:09:59,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2024-11-08 18:09:59,472 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:09:59,472 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:09:59,472 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-08 18:09:59,472 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:09:59,473 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:09:59,473 INFO L85 PathProgramCache]: Analyzing trace with hash 55948272, now seen corresponding path program 1 times [2024-11-08 18:09:59,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:09:59,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286165626] [2024-11-08 18:09:59,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:09:59,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:09:59,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:10:00,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:10:00,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:10:00,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1286165626] [2024-11-08 18:10:00,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1286165626] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:10:00,002 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:10:00,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-08 18:10:00,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797378900] [2024-11-08 18:10:00,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:10:00,003 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 18:10:00,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:10:00,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 18:10:00,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-08 18:10:00,005 INFO L87 Difference]: Start difference. First operand 7409 states and 11117 transitions. Second operand has 5 states, 5 states have (on average 51.6) internal successors, (258), 5 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:10:00,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:10:00,371 INFO L93 Difference]: Finished difference Result 21293 states and 31954 transitions. [2024-11-08 18:10:00,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 18:10:00,372 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 51.6) internal successors, (258), 5 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 258 [2024-11-08 18:10:00,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:10:00,419 INFO L225 Difference]: With dead ends: 21293 [2024-11-08 18:10:00,420 INFO L226 Difference]: Without dead ends: 14182 [2024-11-08 18:10:00,435 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-08 18:10:00,436 INFO L432 NwaCegarLoop]: 11105 mSDtfsCounter, 10365 mSDsluCounter, 32864 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10365 SdHoareTripleChecker+Valid, 43969 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 18:10:00,437 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10365 Valid, 43969 Invalid, 30 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 18:10:00,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14182 states. [2024-11-08 18:10:00,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14182 to 7605. [2024-11-08 18:10:00,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7605 states, 7604 states have (on average 1.5006575486586007) internal successors, (11411), 7604 states have internal predecessors, (11411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:10:00,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7605 states to 7605 states and 11411 transitions. [2024-11-08 18:10:00,672 INFO L78 Accepts]: Start accepts. Automaton has 7605 states and 11411 transitions. Word has length 258 [2024-11-08 18:10:00,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:10:00,673 INFO L471 AbstractCegarLoop]: Abstraction has 7605 states and 11411 transitions. [2024-11-08 18:10:00,673 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 51.6) internal successors, (258), 5 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:10:00,673 INFO L276 IsEmpty]: Start isEmpty. Operand 7605 states and 11411 transitions. [2024-11-08 18:10:00,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3776 [2024-11-08 18:10:00,951 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:10:00,953 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:10:00,954 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-08 18:10:00,954 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:10:00,955 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:10:00,956 INFO L85 PathProgramCache]: Analyzing trace with hash -76427822, now seen corresponding path program 1 times [2024-11-08 18:10:00,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:10:00,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444061952] [2024-11-08 18:10:00,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:10:00,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:10:12,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat