./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p04.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version fca748b1 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p04.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 7fcc6d521e585376faa967e3fb44ecb88c57fe5091f07017ec46bf0d857d1eb6 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dd.update-z3-fca748b-m [2024-11-20 02:05:14,808 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-20 02:05:14,908 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2024-11-20 02:05:14,914 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-20 02:05:14,915 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-20 02:05:14,949 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-20 02:05:14,951 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-20 02:05:14,951 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-20 02:05:14,952 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-20 02:05:14,956 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-20 02:05:14,956 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-20 02:05:14,957 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-20 02:05:14,957 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-20 02:05:14,959 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-20 02:05:14,959 INFO L153 SettingsManager]: * Use SBE=true [2024-11-20 02:05:14,959 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-20 02:05:14,960 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-20 02:05:14,960 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-20 02:05:14,961 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-20 02:05:14,961 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-20 02:05:14,961 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-20 02:05:14,962 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-20 02:05:14,962 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-20 02:05:14,962 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-20 02:05:14,962 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-20 02:05:14,973 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-20 02:05:14,974 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-20 02:05:14,975 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-20 02:05:14,975 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-20 02:05:14,975 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-20 02:05:14,976 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-20 02:05:14,976 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-20 02:05:14,976 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-20 02:05:14,977 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-20 02:05:14,977 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-20 02:05:14,977 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-20 02:05:14,977 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-20 02:05:14,977 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-20 02:05:14,978 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-20 02:05:14,978 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7fcc6d521e585376faa967e3fb44ecb88c57fe5091f07017ec46bf0d857d1eb6 [2024-11-20 02:05:15,237 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-20 02:05:15,265 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-20 02:05:15,267 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-20 02:05:15,268 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-20 02:05:15,269 INFO L274 PluginConnector]: CDTParser initialized [2024-11-20 02:05:15,271 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p04.c [2024-11-20 02:05:16,722 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-20 02:05:16,950 INFO L384 CDTParser]: Found 1 translation units. [2024-11-20 02:05:16,951 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p04.c [2024-11-20 02:05:16,967 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/07e7f4c23/47c2cba2def4405ca9a16d3d0cd6891b/FLAG2146c83c3 [2024-11-20 02:05:16,983 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/07e7f4c23/47c2cba2def4405ca9a16d3d0cd6891b [2024-11-20 02:05:16,985 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-20 02:05:16,987 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-20 02:05:16,988 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-20 02:05:16,989 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-20 02:05:16,994 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-20 02:05:16,995 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 02:05:16" (1/1) ... [2024-11-20 02:05:16,996 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@18f721b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:05:16, skipping insertion in model container [2024-11-20 02:05:16,998 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 02:05:16" (1/1) ... [2024-11-20 02:05:17,033 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-20 02:05:17,193 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.vcegar_QF_BV_itc99_b13_p04.c[1266,1279] [2024-11-20 02:05:17,252 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-20 02:05:17,262 INFO L200 MainTranslator]: Completed pre-run [2024-11-20 02:05:17,274 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.vcegar_QF_BV_itc99_b13_p04.c[1266,1279] [2024-11-20 02:05:17,317 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-20 02:05:17,351 INFO L204 MainTranslator]: Completed translation [2024-11-20 02:05:17,351 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:05:17 WrapperNode [2024-11-20 02:05:17,352 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-20 02:05:17,353 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-20 02:05:17,354 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-20 02:05:17,357 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-20 02:05:17,363 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:05:17" (1/1) ... [2024-11-20 02:05:17,374 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:05:17" (1/1) ... [2024-11-20 02:05:17,421 INFO L138 Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 341 [2024-11-20 02:05:17,423 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-20 02:05:17,424 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-20 02:05:17,424 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-20 02:05:17,424 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-20 02:05:17,435 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:05:17" (1/1) ... [2024-11-20 02:05:17,435 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:05:17" (1/1) ... [2024-11-20 02:05:17,441 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:05:17" (1/1) ... [2024-11-20 02:05:17,463 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]. [2024-11-20 02:05:17,463 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:05:17" (1/1) ... [2024-11-20 02:05:17,464 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:05:17" (1/1) ... [2024-11-20 02:05:17,476 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:05:17" (1/1) ... [2024-11-20 02:05:17,480 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:05:17" (1/1) ... [2024-11-20 02:05:17,486 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:05:17" (1/1) ... [2024-11-20 02:05:17,489 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:05:17" (1/1) ... [2024-11-20 02:05:17,497 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-20 02:05:17,498 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-20 02:05:17,499 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-20 02:05:17,499 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-20 02:05:17,499 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:05:17" (1/1) ... [2024-11-20 02:05:17,506 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-20 02:05:17,517 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 02:05:17,534 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) [2024-11-20 02:05:17,542 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 [2024-11-20 02:05:17,597 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-20 02:05:17,597 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-20 02:05:17,598 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-20 02:05:17,598 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-20 02:05:17,717 INFO L238 CfgBuilder]: Building ICFG [2024-11-20 02:05:17,721 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-20 02:05:18,201 INFO L? ?]: Removed 136 outVars from TransFormulas that were not future-live. [2024-11-20 02:05:18,201 INFO L287 CfgBuilder]: Performing block encoding [2024-11-20 02:05:18,216 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-20 02:05:18,217 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-20 02:05:18,217 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 02:05:18 BoogieIcfgContainer [2024-11-20 02:05:18,219 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-20 02:05:18,221 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-20 02:05:18,222 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-20 02:05:18,225 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-20 02:05:18,226 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 02:05:16" (1/3) ... [2024-11-20 02:05:18,227 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56d55be6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 02:05:18, skipping insertion in model container [2024-11-20 02:05:18,227 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:05:17" (2/3) ... [2024-11-20 02:05:18,227 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56d55be6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 02:05:18, skipping insertion in model container [2024-11-20 02:05:18,227 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 02:05:18" (3/3) ... [2024-11-20 02:05:18,229 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p04.c [2024-11-20 02:05:18,248 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-20 02:05:18,248 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-20 02:05:18,312 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-20 02:05:18,319 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;@783bb89a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-20 02:05:18,320 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-20 02:05:18,325 INFO L276 IsEmpty]: Start isEmpty. Operand has 62 states, 60 states have (on average 1.4833333333333334) internal successors, (89), 61 states have internal predecessors, (89), 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) [2024-11-20 02:05:18,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-20 02:05:18,333 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 02:05:18,333 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] [2024-11-20 02:05:18,334 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 02:05:18,339 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 02:05:18,340 INFO L85 PathProgramCache]: Analyzing trace with hash -11435034, now seen corresponding path program 1 times [2024-11-20 02:05:18,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 02:05:18,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618175130] [2024-11-20 02:05:18,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 02:05:18,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 02:05:18,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 02:05:19,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 02:05:19,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 02:05:19,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618175130] [2024-11-20 02:05:19,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1618175130] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 02:05:19,019 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 02:05:19,019 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-20 02:05:19,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278471692] [2024-11-20 02:05:19,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 02:05:19,031 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-20 02:05:19,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 02:05:19,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-20 02:05:19,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-20 02:05:19,064 INFO L87 Difference]: Start difference. First operand has 62 states, 60 states have (on average 1.4833333333333334) internal successors, (89), 61 states have internal predecessors, (89), 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 6.25) internal successors, (25), 4 states have internal predecessors, (25), 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) [2024-11-20 02:05:19,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 02:05:19,119 INFO L93 Difference]: Finished difference Result 101 states and 147 transitions. [2024-11-20 02:05:19,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-20 02:05:19,122 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 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 25 [2024-11-20 02:05:19,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 02:05:19,131 INFO L225 Difference]: With dead ends: 101 [2024-11-20 02:05:19,131 INFO L226 Difference]: Without dead ends: 61 [2024-11-20 02:05:19,134 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 [2024-11-20 02:05:19,139 INFO L432 NwaCegarLoop]: 83 mSDtfsCounter, 0 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 243 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-20 02:05:19,141 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 243 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-20 02:05:19,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2024-11-20 02:05:19,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2024-11-20 02:05:19,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 60 states have (on average 1.45) internal successors, (87), 60 states have internal predecessors, (87), 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) [2024-11-20 02:05:19,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 87 transitions. [2024-11-20 02:05:19,180 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 87 transitions. Word has length 25 [2024-11-20 02:05:19,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 02:05:19,182 INFO L471 AbstractCegarLoop]: Abstraction has 61 states and 87 transitions. [2024-11-20 02:05:19,182 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 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) [2024-11-20 02:05:19,182 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 87 transitions. [2024-11-20 02:05:19,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-20 02:05:19,184 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 02:05:19,184 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] [2024-11-20 02:05:19,185 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-20 02:05:19,185 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 02:05:19,186 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 02:05:19,186 INFO L85 PathProgramCache]: Analyzing trace with hash -352790771, now seen corresponding path program 1 times [2024-11-20 02:05:19,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 02:05:19,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210842548] [2024-11-20 02:05:19,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 02:05:19,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 02:05:19,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 02:05:19,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 02:05:19,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 02:05:19,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1210842548] [2024-11-20 02:05:19,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1210842548] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 02:05:19,340 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 02:05:19,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-20 02:05:19,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368259046] [2024-11-20 02:05:19,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 02:05:19,342 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-20 02:05:19,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 02:05:19,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-20 02:05:19,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-20 02:05:19,344 INFO L87 Difference]: Start difference. First operand 61 states and 87 transitions. Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 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) [2024-11-20 02:05:19,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 02:05:19,386 INFO L93 Difference]: Finished difference Result 102 states and 145 transitions. [2024-11-20 02:05:19,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-20 02:05:19,387 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 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 26 [2024-11-20 02:05:19,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 02:05:19,388 INFO L225 Difference]: With dead ends: 102 [2024-11-20 02:05:19,388 INFO L226 Difference]: Without dead ends: 63 [2024-11-20 02:05:19,389 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 [2024-11-20 02:05:19,391 INFO L432 NwaCegarLoop]: 83 mSDtfsCounter, 0 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 239 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 [2024-11-20 02:05:19,392 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 239 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-20 02:05:19,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2024-11-20 02:05:19,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2024-11-20 02:05:19,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 62 states have (on average 1.435483870967742) internal successors, (89), 62 states have internal predecessors, (89), 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) [2024-11-20 02:05:19,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 89 transitions. [2024-11-20 02:05:19,398 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 89 transitions. Word has length 26 [2024-11-20 02:05:19,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 02:05:19,398 INFO L471 AbstractCegarLoop]: Abstraction has 63 states and 89 transitions. [2024-11-20 02:05:19,399 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 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) [2024-11-20 02:05:19,399 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 89 transitions. [2024-11-20 02:05:19,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-20 02:05:19,400 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 02:05:19,400 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] [2024-11-20 02:05:19,400 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-20 02:05:19,400 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 02:05:19,401 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 02:05:19,401 INFO L85 PathProgramCache]: Analyzing trace with hash 850422175, now seen corresponding path program 1 times [2024-11-20 02:05:19,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 02:05:19,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022431425] [2024-11-20 02:05:19,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 02:05:19,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 02:05:19,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 02:05:19,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 02:05:19,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 02:05:19,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022431425] [2024-11-20 02:05:19,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2022431425] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 02:05:19,696 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 02:05:19,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-20 02:05:19,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006338951] [2024-11-20 02:05:19,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 02:05:19,697 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-20 02:05:19,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 02:05:19,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-20 02:05:19,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-20 02:05:19,700 INFO L87 Difference]: Start difference. First operand 63 states and 89 transitions. Second operand has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 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) [2024-11-20 02:05:19,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 02:05:19,734 INFO L93 Difference]: Finished difference Result 104 states and 146 transitions. [2024-11-20 02:05:19,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-20 02:05:19,734 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 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 27 [2024-11-20 02:05:19,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 02:05:19,735 INFO L225 Difference]: With dead ends: 104 [2024-11-20 02:05:19,735 INFO L226 Difference]: Without dead ends: 63 [2024-11-20 02:05:19,736 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 [2024-11-20 02:05:19,737 INFO L432 NwaCegarLoop]: 79 mSDtfsCounter, 6 mSDsluCounter, 148 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 227 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-20 02:05:19,738 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 227 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-20 02:05:19,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2024-11-20 02:05:19,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2024-11-20 02:05:19,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 62 states have (on average 1.4193548387096775) internal successors, (88), 62 states have internal predecessors, (88), 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) [2024-11-20 02:05:19,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 88 transitions. [2024-11-20 02:05:19,744 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 88 transitions. Word has length 27 [2024-11-20 02:05:19,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 02:05:19,745 INFO L471 AbstractCegarLoop]: Abstraction has 63 states and 88 transitions. [2024-11-20 02:05:19,745 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 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) [2024-11-20 02:05:19,745 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 88 transitions. [2024-11-20 02:05:19,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-20 02:05:19,746 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 02:05:19,746 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] [2024-11-20 02:05:19,746 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-20 02:05:19,747 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 02:05:19,747 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 02:05:19,748 INFO L85 PathProgramCache]: Analyzing trace with hash 1502170580, now seen corresponding path program 1 times [2024-11-20 02:05:19,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 02:05:19,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547102688] [2024-11-20 02:05:19,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 02:05:19,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 02:05:19,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 02:05:20,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 02:05:20,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 02:05:20,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547102688] [2024-11-20 02:05:20,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1547102688] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 02:05:20,183 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 02:05:20,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-20 02:05:20,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612075411] [2024-11-20 02:05:20,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 02:05:20,184 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-20 02:05:20,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 02:05:20,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-20 02:05:20,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-20 02:05:20,185 INFO L87 Difference]: Start difference. First operand 63 states and 88 transitions. Second operand has 8 states, 8 states have (on average 3.5) internal successors, (28), 8 states have internal predecessors, (28), 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) [2024-11-20 02:05:20,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 02:05:20,309 INFO L93 Difference]: Finished difference Result 114 states and 158 transitions. [2024-11-20 02:05:20,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-20 02:05:20,310 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.5) internal successors, (28), 8 states have internal predecessors, (28), 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 28 [2024-11-20 02:05:20,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 02:05:20,311 INFO L225 Difference]: With dead ends: 114 [2024-11-20 02:05:20,312 INFO L226 Difference]: Without dead ends: 73 [2024-11-20 02:05:20,313 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-11-20 02:05:20,314 INFO L432 NwaCegarLoop]: 77 mSDtfsCounter, 88 mSDsluCounter, 371 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 448 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-20 02:05:20,317 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 448 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-20 02:05:20,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2024-11-20 02:05:20,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 72. [2024-11-20 02:05:20,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 71 states have (on average 1.408450704225352) internal successors, (100), 71 states have internal predecessors, (100), 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) [2024-11-20 02:05:20,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 100 transitions. [2024-11-20 02:05:20,328 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 100 transitions. Word has length 28 [2024-11-20 02:05:20,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 02:05:20,328 INFO L471 AbstractCegarLoop]: Abstraction has 72 states and 100 transitions. [2024-11-20 02:05:20,333 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.5) internal successors, (28), 8 states have internal predecessors, (28), 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) [2024-11-20 02:05:20,333 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 100 transitions. [2024-11-20 02:05:20,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-20 02:05:20,335 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 02:05:20,335 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] [2024-11-20 02:05:20,336 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-20 02:05:20,336 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 02:05:20,337 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 02:05:20,337 INFO L85 PathProgramCache]: Analyzing trace with hash -358005860, now seen corresponding path program 1 times [2024-11-20 02:05:20,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 02:05:20,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [762745773] [2024-11-20 02:05:20,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 02:05:20,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 02:05:20,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 02:05:20,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 02:05:20,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 02:05:20,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [762745773] [2024-11-20 02:05:20,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [762745773] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 02:05:20,614 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 02:05:20,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-20 02:05:20,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107856547] [2024-11-20 02:05:20,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 02:05:20,615 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-20 02:05:20,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 02:05:20,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-20 02:05:20,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-20 02:05:20,616 INFO L87 Difference]: Start difference. First operand 72 states and 100 transitions. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 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) [2024-11-20 02:05:20,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 02:05:20,663 INFO L93 Difference]: Finished difference Result 128 states and 176 transitions. [2024-11-20 02:05:20,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-20 02:05:20,664 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 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 29 [2024-11-20 02:05:20,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 02:05:20,665 INFO L225 Difference]: With dead ends: 128 [2024-11-20 02:05:20,665 INFO L226 Difference]: Without dead ends: 78 [2024-11-20 02:05:20,665 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-20 02:05:20,670 INFO L432 NwaCegarLoop]: 80 mSDtfsCounter, 71 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 233 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-20 02:05:20,673 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 233 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-20 02:05:20,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2024-11-20 02:05:20,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2024-11-20 02:05:20,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 77 states have (on average 1.3766233766233766) internal successors, (106), 77 states have internal predecessors, (106), 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) [2024-11-20 02:05:20,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 106 transitions. [2024-11-20 02:05:20,685 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 106 transitions. Word has length 29 [2024-11-20 02:05:20,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 02:05:20,685 INFO L471 AbstractCegarLoop]: Abstraction has 78 states and 106 transitions. [2024-11-20 02:05:20,686 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 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) [2024-11-20 02:05:20,686 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 106 transitions. [2024-11-20 02:05:20,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-20 02:05:20,687 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 02:05:20,687 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] [2024-11-20 02:05:20,688 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-20 02:05:20,688 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 02:05:20,688 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 02:05:20,689 INFO L85 PathProgramCache]: Analyzing trace with hash 167789105, now seen corresponding path program 1 times [2024-11-20 02:05:20,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 02:05:20,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670823475] [2024-11-20 02:05:20,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 02:05:20,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 02:05:20,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 02:05:20,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 02:05:20,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 02:05:20,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1670823475] [2024-11-20 02:05:20,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1670823475] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 02:05:20,864 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 02:05:20,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-20 02:05:20,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414746711] [2024-11-20 02:05:20,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 02:05:20,864 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-20 02:05:20,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 02:05:20,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-20 02:05:20,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-20 02:05:20,867 INFO L87 Difference]: Start difference. First operand 78 states and 106 transitions. Second operand has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 states have internal predecessors, (29), 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) [2024-11-20 02:05:20,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 02:05:20,921 INFO L93 Difference]: Finished difference Result 166 states and 220 transitions. [2024-11-20 02:05:20,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-20 02:05:20,921 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 states have internal predecessors, (29), 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 29 [2024-11-20 02:05:20,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 02:05:20,922 INFO L225 Difference]: With dead ends: 166 [2024-11-20 02:05:20,923 INFO L226 Difference]: Without dead ends: 110 [2024-11-20 02:05:20,923 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-11-20 02:05:20,924 INFO L432 NwaCegarLoop]: 79 mSDtfsCounter, 132 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 231 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-20 02:05:20,924 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [132 Valid, 231 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-20 02:05:20,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2024-11-20 02:05:20,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 80. [2024-11-20 02:05:20,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 79 states have (on average 1.3670886075949367) internal successors, (108), 79 states have internal predecessors, (108), 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) [2024-11-20 02:05:20,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 108 transitions. [2024-11-20 02:05:20,938 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 108 transitions. Word has length 29 [2024-11-20 02:05:20,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 02:05:20,938 INFO L471 AbstractCegarLoop]: Abstraction has 80 states and 108 transitions. [2024-11-20 02:05:20,938 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 states have internal predecessors, (29), 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) [2024-11-20 02:05:20,939 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 108 transitions. [2024-11-20 02:05:20,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-11-20 02:05:20,941 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 02:05:20,941 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] [2024-11-20 02:05:20,941 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-20 02:05:20,942 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 02:05:20,945 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 02:05:20,946 INFO L85 PathProgramCache]: Analyzing trace with hash 976517016, now seen corresponding path program 1 times [2024-11-20 02:05:20,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 02:05:20,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285496577] [2024-11-20 02:05:20,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 02:05:20,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 02:05:20,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 02:05:21,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 02:05:21,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 02:05:21,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285496577] [2024-11-20 02:05:21,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1285496577] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 02:05:21,117 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 02:05:21,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-20 02:05:21,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116072537] [2024-11-20 02:05:21,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 02:05:21,118 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-20 02:05:21,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 02:05:21,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-20 02:05:21,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-20 02:05:21,120 INFO L87 Difference]: Start difference. First operand 80 states and 108 transitions. Second operand has 6 states, 6 states have (on average 5.0) internal successors, (30), 6 states have internal predecessors, (30), 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) [2024-11-20 02:05:21,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 02:05:21,246 INFO L93 Difference]: Finished difference Result 148 states and 195 transitions. [2024-11-20 02:05:21,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-20 02:05:21,247 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.0) internal successors, (30), 6 states have internal predecessors, (30), 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 30 [2024-11-20 02:05:21,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 02:05:21,247 INFO L225 Difference]: With dead ends: 148 [2024-11-20 02:05:21,248 INFO L226 Difference]: Without dead ends: 92 [2024-11-20 02:05:21,248 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-11-20 02:05:21,250 INFO L432 NwaCegarLoop]: 79 mSDtfsCounter, 98 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 254 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-20 02:05:21,252 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 254 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-20 02:05:21,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2024-11-20 02:05:21,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 82. [2024-11-20 02:05:21,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 81 states have (on average 1.3580246913580247) internal successors, (110), 81 states have internal predecessors, (110), 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) [2024-11-20 02:05:21,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 110 transitions. [2024-11-20 02:05:21,264 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 110 transitions. Word has length 30 [2024-11-20 02:05:21,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 02:05:21,265 INFO L471 AbstractCegarLoop]: Abstraction has 82 states and 110 transitions. [2024-11-20 02:05:21,265 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.0) internal successors, (30), 6 states have internal predecessors, (30), 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) [2024-11-20 02:05:21,265 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 110 transitions. [2024-11-20 02:05:21,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-20 02:05:21,266 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 02:05:21,266 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-20 02:05:21,266 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-20 02:05:21,267 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 02:05:21,267 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 02:05:21,267 INFO L85 PathProgramCache]: Analyzing trace with hash 1363753517, now seen corresponding path program 1 times [2024-11-20 02:05:21,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 02:05:21,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852691771] [2024-11-20 02:05:21,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 02:05:21,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 02:05:21,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 02:05:21,734 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 02:05:21,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 02:05:21,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852691771] [2024-11-20 02:05:21,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [852691771] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 02:05:21,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [660075344] [2024-11-20 02:05:21,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 02:05:21,735 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 02:05:21,736 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 02:05:21,739 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) [2024-11-20 02:05:21,741 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-20 02:05:21,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 02:05:21,936 INFO L255 TraceCheckSpWp]: Trace formula consists of 358 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-11-20 02:05:21,944 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 02:05:22,193 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 02:05:22,197 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-20 02:05:22,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [660075344] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 02:05:22,197 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-20 02:05:22,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 9 [2024-11-20 02:05:22,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099213676] [2024-11-20 02:05:22,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 02:05:22,198 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-20 02:05:22,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 02:05:22,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-20 02:05:22,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-11-20 02:05:22,199 INFO L87 Difference]: Start difference. First operand 82 states and 110 transitions. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 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) [2024-11-20 02:05:22,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 02:05:22,384 INFO L93 Difference]: Finished difference Result 155 states and 205 transitions. [2024-11-20 02:05:22,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-20 02:05:22,385 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 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 49 [2024-11-20 02:05:22,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 02:05:22,386 INFO L225 Difference]: With dead ends: 155 [2024-11-20 02:05:22,386 INFO L226 Difference]: Without dead ends: 99 [2024-11-20 02:05:22,387 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-11-20 02:05:22,387 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 106 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 183 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-20 02:05:22,387 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 69 Invalid, 184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 183 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-20 02:05:22,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2024-11-20 02:05:22,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 94. [2024-11-20 02:05:22,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 93 states have (on average 1.3118279569892473) internal successors, (122), 93 states have internal predecessors, (122), 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) [2024-11-20 02:05:22,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 122 transitions. [2024-11-20 02:05:22,397 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 122 transitions. Word has length 49 [2024-11-20 02:05:22,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 02:05:22,398 INFO L471 AbstractCegarLoop]: Abstraction has 94 states and 122 transitions. [2024-11-20 02:05:22,398 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 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) [2024-11-20 02:05:22,398 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 122 transitions. [2024-11-20 02:05:22,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-11-20 02:05:22,399 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 02:05:22,399 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-20 02:05:22,414 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-20 02:05:22,599 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 02:05:22,600 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 02:05:22,600 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 02:05:22,600 INFO L85 PathProgramCache]: Analyzing trace with hash 1274866513, now seen corresponding path program 1 times [2024-11-20 02:05:22,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 02:05:22,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359262159] [2024-11-20 02:05:22,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 02:05:22,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 02:05:22,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 02:05:23,120 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 02:05:23,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 02:05:23,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359262159] [2024-11-20 02:05:23,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1359262159] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 02:05:23,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [563641117] [2024-11-20 02:05:23,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 02:05:23,121 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 02:05:23,122 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 02:05:23,124 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) [2024-11-20 02:05:23,125 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-20 02:05:23,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 02:05:23,313 INFO L255 TraceCheckSpWp]: Trace formula consists of 361 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-11-20 02:05:23,317 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 02:05:23,676 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 02:05:23,676 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 02:05:23,899 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-20 02:05:23,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [563641117] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 02:05:23,902 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 02:05:23,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 6] total 16 [2024-11-20 02:05:23,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996868005] [2024-11-20 02:05:23,903 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 02:05:23,903 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-20 02:05:23,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 02:05:23,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-20 02:05:23,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2024-11-20 02:05:23,904 INFO L87 Difference]: Start difference. First operand 94 states and 122 transitions. Second operand has 16 states, 16 states have (on average 6.875) internal successors, (110), 16 states have internal predecessors, (110), 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) [2024-11-20 02:05:24,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 02:05:24,211 INFO L93 Difference]: Finished difference Result 139 states and 181 transitions. [2024-11-20 02:05:24,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-20 02:05:24,211 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 6.875) internal successors, (110), 16 states have internal predecessors, (110), 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 50 [2024-11-20 02:05:24,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 02:05:24,212 INFO L225 Difference]: With dead ends: 139 [2024-11-20 02:05:24,212 INFO L226 Difference]: Without dead ends: 83 [2024-11-20 02:05:24,213 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 91 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=94, Invalid=286, Unknown=0, NotChecked=0, Total=380 [2024-11-20 02:05:24,213 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 168 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 364 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 146 SdHoareTripleChecker+Invalid, 367 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 364 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-20 02:05:24,214 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [168 Valid, 146 Invalid, 367 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 364 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-20 02:05:24,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2024-11-20 02:05:24,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 82. [2024-11-20 02:05:24,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 81 states have (on average 1.2962962962962963) internal successors, (105), 81 states have internal predecessors, (105), 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) [2024-11-20 02:05:24,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 105 transitions. [2024-11-20 02:05:24,218 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 105 transitions. Word has length 50 [2024-11-20 02:05:24,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 02:05:24,219 INFO L471 AbstractCegarLoop]: Abstraction has 82 states and 105 transitions. [2024-11-20 02:05:24,219 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 6.875) internal successors, (110), 16 states have internal predecessors, (110), 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) [2024-11-20 02:05:24,219 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 105 transitions. [2024-11-20 02:05:24,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-20 02:05:24,220 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 02:05:24,220 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-20 02:05:24,231 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-20 02:05:24,423 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2024-11-20 02:05:24,424 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 02:05:24,424 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 02:05:24,424 INFO L85 PathProgramCache]: Analyzing trace with hash 936178296, now seen corresponding path program 1 times [2024-11-20 02:05:24,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 02:05:24,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086282161] [2024-11-20 02:05:24,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 02:05:24,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 02:05:24,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 02:05:25,305 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-20 02:05:25,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 02:05:25,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086282161] [2024-11-20 02:05:25,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1086282161] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 02:05:25,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [932944689] [2024-11-20 02:05:25,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 02:05:25,306 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 02:05:25,306 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 02:05:25,309 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 02:05:25,311 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-20 02:05:25,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 02:05:25,499 INFO L255 TraceCheckSpWp]: Trace formula consists of 362 conjuncts, 55 conjuncts are in the unsatisfiable core [2024-11-20 02:05:25,504 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 02:05:25,924 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 02:05:25,924 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 02:05:27,047 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 02:05:27,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [932944689] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 02:05:27,047 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 02:05:27,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 11] total 26 [2024-11-20 02:05:27,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959854817] [2024-11-20 02:05:27,048 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 02:05:27,049 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-20 02:05:27,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 02:05:27,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-20 02:05:27,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=555, Unknown=0, NotChecked=0, Total=650 [2024-11-20 02:05:27,051 INFO L87 Difference]: Start difference. First operand 82 states and 105 transitions. Second operand has 26 states, 26 states have (on average 5.0) internal successors, (130), 26 states have internal predecessors, (130), 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) [2024-11-20 02:05:27,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 02:05:27,709 INFO L93 Difference]: Finished difference Result 126 states and 162 transitions. [2024-11-20 02:05:27,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-20 02:05:27,709 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 5.0) internal successors, (130), 26 states have internal predecessors, (130), 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 51 [2024-11-20 02:05:27,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 02:05:27,711 INFO L225 Difference]: With dead ends: 126 [2024-11-20 02:05:27,711 INFO L226 Difference]: Without dead ends: 82 [2024-11-20 02:05:27,712 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=174, Invalid=882, Unknown=0, NotChecked=0, Total=1056 [2024-11-20 02:05:27,712 INFO L432 NwaCegarLoop]: 15 mSDtfsCounter, 107 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 756 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 162 SdHoareTripleChecker+Invalid, 758 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 756 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-20 02:05:27,713 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 162 Invalid, 758 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 756 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-20 02:05:27,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2024-11-20 02:05:27,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2024-11-20 02:05:27,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 81 states have (on average 1.2839506172839505) internal successors, (104), 81 states have internal predecessors, (104), 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) [2024-11-20 02:05:27,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 104 transitions. [2024-11-20 02:05:27,719 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 104 transitions. Word has length 51 [2024-11-20 02:05:27,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 02:05:27,719 INFO L471 AbstractCegarLoop]: Abstraction has 82 states and 104 transitions. [2024-11-20 02:05:27,719 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 5.0) internal successors, (130), 26 states have internal predecessors, (130), 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) [2024-11-20 02:05:27,719 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 104 transitions. [2024-11-20 02:05:27,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-11-20 02:05:27,721 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 02:05:27,721 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-20 02:05:27,731 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-20 02:05:27,924 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 02:05:27,925 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 02:05:27,926 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 02:05:27,926 INFO L85 PathProgramCache]: Analyzing trace with hash 521301335, now seen corresponding path program 1 times [2024-11-20 02:05:27,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 02:05:27,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678452370] [2024-11-20 02:05:27,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 02:05:27,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 02:05:28,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 02:05:28,867 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 02:05:28,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 02:05:28,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678452370] [2024-11-20 02:05:28,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [678452370] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 02:05:28,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1974815718] [2024-11-20 02:05:28,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 02:05:28,869 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 02:05:28,869 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 02:05:28,871 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 02:05:28,873 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-20 02:05:29,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 02:05:29,083 INFO L255 TraceCheckSpWp]: Trace formula consists of 363 conjuncts, 60 conjuncts are in the unsatisfiable core [2024-11-20 02:05:29,092 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 02:05:29,484 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 02:05:29,485 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 02:05:30,309 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 02:05:30,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1974815718] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 02:05:30,313 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 02:05:30,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9, 9] total 21 [2024-11-20 02:05:30,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070645104] [2024-11-20 02:05:30,314 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 02:05:30,314 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-20 02:05:30,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 02:05:30,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-20 02:05:30,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=335, Unknown=0, NotChecked=0, Total=420 [2024-11-20 02:05:30,315 INFO L87 Difference]: Start difference. First operand 82 states and 104 transitions. Second operand has 21 states, 21 states have (on average 6.0) internal successors, (126), 21 states have internal predecessors, (126), 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) [2024-11-20 02:05:30,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 02:05:30,755 INFO L93 Difference]: Finished difference Result 149 states and 188 transitions. [2024-11-20 02:05:30,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-20 02:05:30,756 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 6.0) internal successors, (126), 21 states have internal predecessors, (126), 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 52 [2024-11-20 02:05:30,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 02:05:30,756 INFO L225 Difference]: With dead ends: 149 [2024-11-20 02:05:30,756 INFO L226 Difference]: Without dead ends: 105 [2024-11-20 02:05:30,757 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 184 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=151, Invalid=551, Unknown=0, NotChecked=0, Total=702 [2024-11-20 02:05:30,757 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 136 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 426 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 429 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 426 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-20 02:05:30,758 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 137 Invalid, 429 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 426 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-20 02:05:30,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2024-11-20 02:05:30,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 95. [2024-11-20 02:05:30,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 94 states have (on average 1.2872340425531914) internal successors, (121), 94 states have internal predecessors, (121), 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) [2024-11-20 02:05:30,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 121 transitions. [2024-11-20 02:05:30,766 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 121 transitions. Word has length 52 [2024-11-20 02:05:30,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 02:05:30,767 INFO L471 AbstractCegarLoop]: Abstraction has 95 states and 121 transitions. [2024-11-20 02:05:30,767 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 6.0) internal successors, (126), 21 states have internal predecessors, (126), 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) [2024-11-20 02:05:30,767 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 121 transitions. [2024-11-20 02:05:30,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-11-20 02:05:30,768 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 02:05:30,768 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-20 02:05:30,778 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-20 02:05:30,969 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 02:05:30,969 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 02:05:30,969 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 02:05:30,970 INFO L85 PathProgramCache]: Analyzing trace with hash 1675724371, now seen corresponding path program 1 times [2024-11-20 02:05:30,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 02:05:30,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307083284] [2024-11-20 02:05:30,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 02:05:30,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 02:05:31,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 02:05:32,780 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 32 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 02:05:32,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 02:05:32,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307083284] [2024-11-20 02:05:32,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1307083284] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 02:05:32,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1134665734] [2024-11-20 02:05:32,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 02:05:32,781 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 02:05:32,782 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 02:05:32,784 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 02:05:32,787 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-20 02:05:33,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 02:05:33,128 INFO L255 TraceCheckSpWp]: Trace formula consists of 549 conjuncts, 77 conjuncts are in the unsatisfiable core [2024-11-20 02:05:33,137 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 02:05:33,821 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 32 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 02:05:33,821 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 02:05:34,891 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 18 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 02:05:34,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1134665734] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 02:05:34,892 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 02:05:34,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 15, 15] total 38 [2024-11-20 02:05:34,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344475125] [2024-11-20 02:05:34,893 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 02:05:34,893 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-11-20 02:05:34,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 02:05:34,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-11-20 02:05:34,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=214, Invalid=1192, Unknown=0, NotChecked=0, Total=1406 [2024-11-20 02:05:34,897 INFO L87 Difference]: Start difference. First operand 95 states and 121 transitions. Second operand has 38 states, 38 states have (on average 4.894736842105263) internal successors, (186), 38 states have internal predecessors, (186), 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) [2024-11-20 02:05:37,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 02:05:37,084 INFO L93 Difference]: Finished difference Result 398 states and 493 transitions. [2024-11-20 02:05:37,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2024-11-20 02:05:37,085 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 4.894736842105263) internal successors, (186), 38 states have internal predecessors, (186), 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 72 [2024-11-20 02:05:37,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 02:05:37,086 INFO L225 Difference]: With dead ends: 398 [2024-11-20 02:05:37,086 INFO L226 Difference]: Without dead ends: 354 [2024-11-20 02:05:37,089 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1942 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=939, Invalid=5541, Unknown=0, NotChecked=0, Total=6480 [2024-11-20 02:05:37,089 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 587 mSDsluCounter, 543 mSDsCounter, 0 mSdLazyCounter, 1425 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 587 SdHoareTripleChecker+Valid, 568 SdHoareTripleChecker+Invalid, 1448 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 1425 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-20 02:05:37,090 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [587 Valid, 568 Invalid, 1448 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 1425 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-20 02:05:37,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2024-11-20 02:05:37,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 170. [2024-11-20 02:05:37,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 169 states have (on average 1.2781065088757397) internal successors, (216), 169 states have internal predecessors, (216), 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) [2024-11-20 02:05:37,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 216 transitions. [2024-11-20 02:05:37,102 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 216 transitions. Word has length 72 [2024-11-20 02:05:37,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 02:05:37,102 INFO L471 AbstractCegarLoop]: Abstraction has 170 states and 216 transitions. [2024-11-20 02:05:37,102 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 4.894736842105263) internal successors, (186), 38 states have internal predecessors, (186), 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) [2024-11-20 02:05:37,103 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 216 transitions. [2024-11-20 02:05:37,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-11-20 02:05:37,103 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 02:05:37,103 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-20 02:05:37,115 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-20 02:05:37,304 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-20 02:05:37,305 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 02:05:37,305 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 02:05:37,305 INFO L85 PathProgramCache]: Analyzing trace with hash 1198648893, now seen corresponding path program 1 times [2024-11-20 02:05:37,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 02:05:37,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058402214] [2024-11-20 02:05:37,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 02:05:37,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 02:05:37,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 02:05:38,020 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 42 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 02:05:38,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 02:05:38,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058402214] [2024-11-20 02:05:38,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1058402214] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 02:05:38,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1659702771] [2024-11-20 02:05:38,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 02:05:38,022 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 02:05:38,022 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 02:05:38,025 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 02:05:38,026 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-20 02:05:38,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 02:05:38,304 INFO L255 TraceCheckSpWp]: Trace formula consists of 552 conjuncts, 51 conjuncts are in the unsatisfiable core [2024-11-20 02:05:38,309 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 02:05:38,677 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 42 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 02:05:38,678 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 02:05:39,092 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 40 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 02:05:39,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1659702771] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 02:05:39,094 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 02:05:39,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10, 11] total 25 [2024-11-20 02:05:39,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739407109] [2024-11-20 02:05:39,094 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 02:05:39,095 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-20 02:05:39,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 02:05:39,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-20 02:05:39,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=496, Unknown=0, NotChecked=0, Total=600 [2024-11-20 02:05:39,096 INFO L87 Difference]: Start difference. First operand 170 states and 216 transitions. Second operand has 25 states, 25 states have (on average 7.84) internal successors, (196), 25 states have internal predecessors, (196), 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) [2024-11-20 02:05:39,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 02:05:39,886 INFO L93 Difference]: Finished difference Result 403 states and 519 transitions. [2024-11-20 02:05:39,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-20 02:05:39,890 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 7.84) internal successors, (196), 25 states have internal predecessors, (196), 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 73 [2024-11-20 02:05:39,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 02:05:39,891 INFO L225 Difference]: With dead ends: 403 [2024-11-20 02:05:39,891 INFO L226 Difference]: Without dead ends: 271 [2024-11-20 02:05:39,892 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 299 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=208, Invalid=1052, Unknown=0, NotChecked=0, Total=1260 [2024-11-20 02:05:39,892 INFO L432 NwaCegarLoop]: 31 mSDtfsCounter, 126 mSDsluCounter, 329 mSDsCounter, 0 mSdLazyCounter, 1246 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 360 SdHoareTripleChecker+Invalid, 1253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 1246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-20 02:05:39,893 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [126 Valid, 360 Invalid, 1253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 1246 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-20 02:05:39,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2024-11-20 02:05:39,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 256. [2024-11-20 02:05:39,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 256 states, 255 states have (on average 1.2980392156862746) internal successors, (331), 255 states have internal predecessors, (331), 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) [2024-11-20 02:05:39,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 331 transitions. [2024-11-20 02:05:39,905 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 331 transitions. Word has length 73 [2024-11-20 02:05:39,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 02:05:39,906 INFO L471 AbstractCegarLoop]: Abstraction has 256 states and 331 transitions. [2024-11-20 02:05:39,907 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 7.84) internal successors, (196), 25 states have internal predecessors, (196), 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) [2024-11-20 02:05:39,907 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 331 transitions. [2024-11-20 02:05:39,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-11-20 02:05:39,908 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 02:05:39,908 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-20 02:05:39,919 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-20 02:05:40,109 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 02:05:40,110 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 02:05:40,110 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 02:05:40,110 INFO L85 PathProgramCache]: Analyzing trace with hash 1860744854, now seen corresponding path program 1 times [2024-11-20 02:05:40,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 02:05:40,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647756798] [2024-11-20 02:05:40,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 02:05:40,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 02:05:40,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 02:05:41,037 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 39 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 02:05:41,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 02:05:41,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647756798] [2024-11-20 02:05:41,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1647756798] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 02:05:41,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1160734716] [2024-11-20 02:05:41,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 02:05:41,038 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 02:05:41,039 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 02:05:41,041 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 02:05:41,043 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-20 02:05:41,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 02:05:41,320 INFO L255 TraceCheckSpWp]: Trace formula consists of 552 conjuncts, 44 conjuncts are in the unsatisfiable core [2024-11-20 02:05:41,324 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 02:05:41,635 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 39 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 02:05:41,636 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 02:05:41,986 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 35 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 02:05:41,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1160734716] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 02:05:41,987 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 02:05:41,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 13, 13] total 32 [2024-11-20 02:05:41,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309268686] [2024-11-20 02:05:41,987 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 02:05:41,987 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-20 02:05:41,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 02:05:41,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-20 02:05:41,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=162, Invalid=830, Unknown=0, NotChecked=0, Total=992 [2024-11-20 02:05:41,989 INFO L87 Difference]: Start difference. First operand 256 states and 331 transitions. Second operand has 32 states, 32 states have (on average 5.09375) internal successors, (163), 32 states have internal predecessors, (163), 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) [2024-11-20 02:05:43,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 02:05:43,374 INFO L93 Difference]: Finished difference Result 948 states and 1201 transitions. [2024-11-20 02:05:43,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-11-20 02:05:43,374 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 5.09375) internal successors, (163), 32 states have internal predecessors, (163), 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 73 [2024-11-20 02:05:43,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 02:05:43,377 INFO L225 Difference]: With dead ends: 948 [2024-11-20 02:05:43,377 INFO L226 Difference]: Without dead ends: 730 [2024-11-20 02:05:43,378 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 778 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=426, Invalid=2226, Unknown=0, NotChecked=0, Total=2652 [2024-11-20 02:05:43,379 INFO L432 NwaCegarLoop]: 65 mSDtfsCounter, 313 mSDsluCounter, 964 mSDsCounter, 0 mSdLazyCounter, 2171 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 313 SdHoareTripleChecker+Valid, 1029 SdHoareTripleChecker+Invalid, 2184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 2171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-20 02:05:43,379 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [313 Valid, 1029 Invalid, 2184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 2171 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-20 02:05:43,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 730 states. [2024-11-20 02:05:43,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 730 to 378. [2024-11-20 02:05:43,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 378 states, 377 states have (on average 1.2864721485411141) internal successors, (485), 377 states have internal predecessors, (485), 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) [2024-11-20 02:05:43,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 378 states to 378 states and 485 transitions. [2024-11-20 02:05:43,394 INFO L78 Accepts]: Start accepts. Automaton has 378 states and 485 transitions. Word has length 73 [2024-11-20 02:05:43,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 02:05:43,394 INFO L471 AbstractCegarLoop]: Abstraction has 378 states and 485 transitions. [2024-11-20 02:05:43,394 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 5.09375) internal successors, (163), 32 states have internal predecessors, (163), 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) [2024-11-20 02:05:43,394 INFO L276 IsEmpty]: Start isEmpty. Operand 378 states and 485 transitions. [2024-11-20 02:05:43,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-11-20 02:05:43,395 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 02:05:43,395 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-20 02:05:43,406 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-20 02:05:43,596 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 02:05:43,596 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 02:05:43,597 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 02:05:43,597 INFO L85 PathProgramCache]: Analyzing trace with hash -1033696741, now seen corresponding path program 1 times [2024-11-20 02:05:43,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 02:05:43,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [915163969] [2024-11-20 02:05:43,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 02:05:43,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 02:05:43,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 02:05:44,091 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-20 02:05:44,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 02:05:44,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [915163969] [2024-11-20 02:05:44,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [915163969] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 02:05:44,091 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 02:05:44,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-20 02:05:44,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244267724] [2024-11-20 02:05:44,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 02:05:44,092 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-20 02:05:44,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 02:05:44,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-20 02:05:44,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-20 02:05:44,093 INFO L87 Difference]: Start difference. First operand 378 states and 485 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 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) [2024-11-20 02:05:44,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 02:05:44,241 INFO L93 Difference]: Finished difference Result 728 states and 937 transitions. [2024-11-20 02:05:44,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-20 02:05:44,243 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 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 74 [2024-11-20 02:05:44,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 02:05:44,244 INFO L225 Difference]: With dead ends: 728 [2024-11-20 02:05:44,245 INFO L226 Difference]: Without dead ends: 388 [2024-11-20 02:05:44,245 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-20 02:05:44,246 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 96 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 168 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-20 02:05:44,246 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 69 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 168 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-20 02:05:44,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 388 states. [2024-11-20 02:05:44,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 388 to 386. [2024-11-20 02:05:44,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 386 states, 385 states have (on average 1.2857142857142858) internal successors, (495), 385 states have internal predecessors, (495), 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) [2024-11-20 02:05:44,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 495 transitions. [2024-11-20 02:05:44,258 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 495 transitions. Word has length 74 [2024-11-20 02:05:44,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 02:05:44,258 INFO L471 AbstractCegarLoop]: Abstraction has 386 states and 495 transitions. [2024-11-20 02:05:44,259 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 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) [2024-11-20 02:05:44,259 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 495 transitions. [2024-11-20 02:05:44,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-11-20 02:05:44,259 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 02:05:44,260 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-20 02:05:44,260 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-20 02:05:44,260 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 02:05:44,261 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 02:05:44,261 INFO L85 PathProgramCache]: Analyzing trace with hash 1955322614, now seen corresponding path program 1 times [2024-11-20 02:05:44,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 02:05:44,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523093718] [2024-11-20 02:05:44,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 02:05:44,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 02:05:44,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 02:05:45,481 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-20 02:05:45,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 02:05:45,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523093718] [2024-11-20 02:05:45,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1523093718] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 02:05:45,482 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 02:05:45,483 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-20 02:05:45,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463847605] [2024-11-20 02:05:45,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 02:05:45,483 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-20 02:05:45,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 02:05:45,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-20 02:05:45,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-20 02:05:45,484 INFO L87 Difference]: Start difference. First operand 386 states and 495 transitions. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 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) [2024-11-20 02:05:45,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 02:05:45,537 INFO L93 Difference]: Finished difference Result 728 states and 934 transitions. [2024-11-20 02:05:45,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-20 02:05:45,538 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 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 74 [2024-11-20 02:05:45,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 02:05:45,540 INFO L225 Difference]: With dead ends: 728 [2024-11-20 02:05:45,540 INFO L226 Difference]: Without dead ends: 382 [2024-11-20 02:05:45,540 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-20 02:05:45,541 INFO L432 NwaCegarLoop]: 75 mSDtfsCounter, 69 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 216 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-20 02:05:45,541 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 216 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-20 02:05:45,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states. [2024-11-20 02:05:45,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 382. [2024-11-20 02:05:45,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 382 states, 381 states have (on average 1.2834645669291338) internal successors, (489), 381 states have internal predecessors, (489), 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) [2024-11-20 02:05:45,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 489 transitions. [2024-11-20 02:05:45,551 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 489 transitions. Word has length 74 [2024-11-20 02:05:45,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 02:05:45,552 INFO L471 AbstractCegarLoop]: Abstraction has 382 states and 489 transitions. [2024-11-20 02:05:45,552 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 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) [2024-11-20 02:05:45,552 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 489 transitions. [2024-11-20 02:05:45,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2024-11-20 02:05:45,553 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 02:05:45,553 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-20 02:05:45,553 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-20 02:05:45,553 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 02:05:45,554 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 02:05:45,554 INFO L85 PathProgramCache]: Analyzing trace with hash 1596295873, now seen corresponding path program 2 times [2024-11-20 02:05:45,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 02:05:45,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011450422] [2024-11-20 02:05:45,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 02:05:45,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 02:05:45,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 02:05:46,286 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 97 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 02:05:46,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 02:05:46,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011450422] [2024-11-20 02:05:46,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2011450422] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 02:05:46,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1425030819] [2024-11-20 02:05:46,287 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-20 02:05:46,287 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 02:05:46,287 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 02:05:46,290 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 02:05:46,293 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-20 02:05:46,936 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-20 02:05:46,936 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 02:05:46,940 INFO L255 TraceCheckSpWp]: Trace formula consists of 738 conjuncts, 49 conjuncts are in the unsatisfiable core [2024-11-20 02:05:46,946 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 02:05:47,166 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 80 proven. 4 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-20 02:05:47,167 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 02:05:47,509 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 78 proven. 6 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-20 02:05:47,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1425030819] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 02:05:47,510 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 02:05:47,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 11] total 24 [2024-11-20 02:05:47,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352544842] [2024-11-20 02:05:47,510 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 02:05:47,511 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-20 02:05:47,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 02:05:47,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-20 02:05:47,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=473, Unknown=0, NotChecked=0, Total=552 [2024-11-20 02:05:47,512 INFO L87 Difference]: Start difference. First operand 382 states and 489 transitions. Second operand has 24 states, 24 states have (on average 9.5) internal successors, (228), 24 states have internal predecessors, (228), 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) [2024-11-20 02:05:48,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 02:05:48,363 INFO L93 Difference]: Finished difference Result 1112 states and 1439 transitions. [2024-11-20 02:05:48,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-20 02:05:48,366 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 9.5) internal successors, (228), 24 states have internal predecessors, (228), 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 93 [2024-11-20 02:05:48,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 02:05:48,370 INFO L225 Difference]: With dead ends: 1112 [2024-11-20 02:05:48,371 INFO L226 Difference]: Without dead ends: 772 [2024-11-20 02:05:48,372 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 348 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=296, Invalid=1684, Unknown=0, NotChecked=0, Total=1980 [2024-11-20 02:05:48,373 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 264 mSDsluCounter, 347 mSDsCounter, 0 mSdLazyCounter, 1205 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 264 SdHoareTripleChecker+Valid, 387 SdHoareTripleChecker+Invalid, 1212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 1205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-20 02:05:48,374 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [264 Valid, 387 Invalid, 1212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 1205 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-20 02:05:48,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 772 states. [2024-11-20 02:05:48,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 772 to 642. [2024-11-20 02:05:48,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 642 states, 641 states have (on average 1.2605304212168487) internal successors, (808), 641 states have internal predecessors, (808), 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) [2024-11-20 02:05:48,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 642 states to 642 states and 808 transitions. [2024-11-20 02:05:48,391 INFO L78 Accepts]: Start accepts. Automaton has 642 states and 808 transitions. Word has length 93 [2024-11-20 02:05:48,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 02:05:48,391 INFO L471 AbstractCegarLoop]: Abstraction has 642 states and 808 transitions. [2024-11-20 02:05:48,391 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 9.5) internal successors, (228), 24 states have internal predecessors, (228), 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) [2024-11-20 02:05:48,392 INFO L276 IsEmpty]: Start isEmpty. Operand 642 states and 808 transitions. [2024-11-20 02:05:48,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2024-11-20 02:05:48,394 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 02:05:48,394 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-20 02:05:48,404 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-20 02:05:48,594 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-20 02:05:48,595 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 02:05:48,595 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 02:05:48,595 INFO L85 PathProgramCache]: Analyzing trace with hash -1878894513, now seen corresponding path program 3 times [2024-11-20 02:05:48,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 02:05:48,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467571225] [2024-11-20 02:05:48,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 02:05:48,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 02:05:48,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 02:05:49,422 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 83 proven. 4 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-20 02:05:49,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 02:05:49,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467571225] [2024-11-20 02:05:49,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1467571225] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 02:05:49,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1135695597] [2024-11-20 02:05:49,423 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-20 02:05:49,423 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 02:05:49,423 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 02:05:49,426 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 02:05:49,427 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-20 02:05:50,221 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-20 02:05:50,221 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 02:05:50,224 INFO L255 TraceCheckSpWp]: Trace formula consists of 366 conjuncts, 125 conjuncts are in the unsatisfiable core [2024-11-20 02:05:50,230 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 02:05:51,286 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 54 proven. 21 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-20 02:05:51,286 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 02:05:53,301 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 31 proven. 44 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-20 02:05:53,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1135695597] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 02:05:53,301 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 02:05:53,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 19, 21] total 44 [2024-11-20 02:05:53,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391058500] [2024-11-20 02:05:53,302 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 02:05:53,302 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2024-11-20 02:05:53,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 02:05:53,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2024-11-20 02:05:53,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=237, Invalid=1655, Unknown=0, NotChecked=0, Total=1892 [2024-11-20 02:05:53,307 INFO L87 Difference]: Start difference. First operand 642 states and 808 transitions. Second operand has 44 states, 44 states have (on average 4.9772727272727275) internal successors, (219), 44 states have internal predecessors, (219), 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) [2024-11-20 02:05:58,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 02:05:58,735 INFO L93 Difference]: Finished difference Result 1917 states and 2411 transitions. [2024-11-20 02:05:58,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 118 states. [2024-11-20 02:05:58,736 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 4.9772727272727275) internal successors, (219), 44 states have internal predecessors, (219), 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 95 [2024-11-20 02:05:58,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 02:05:58,741 INFO L225 Difference]: With dead ends: 1917 [2024-11-20 02:05:58,741 INFO L226 Difference]: Without dead ends: 1317 [2024-11-20 02:05:58,749 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 305 GetRequests, 156 SyntacticMatches, 1 SemanticMatches, 148 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6870 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=2755, Invalid=19595, Unknown=0, NotChecked=0, Total=22350 [2024-11-20 02:05:58,750 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 603 mSDsluCounter, 472 mSDsCounter, 0 mSdLazyCounter, 2631 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 603 SdHoareTripleChecker+Valid, 496 SdHoareTripleChecker+Invalid, 2700 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 2631 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-20 02:05:58,750 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [603 Valid, 496 Invalid, 2700 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 2631 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-20 02:05:58,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1317 states. [2024-11-20 02:05:58,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1317 to 913. [2024-11-20 02:05:58,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 913 states, 912 states have (on average 1.2587719298245614) internal successors, (1148), 912 states have internal predecessors, (1148), 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) [2024-11-20 02:05:58,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 913 states to 913 states and 1148 transitions. [2024-11-20 02:05:58,807 INFO L78 Accepts]: Start accepts. Automaton has 913 states and 1148 transitions. Word has length 95 [2024-11-20 02:05:58,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 02:05:58,807 INFO L471 AbstractCegarLoop]: Abstraction has 913 states and 1148 transitions. [2024-11-20 02:05:58,807 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 4.9772727272727275) internal successors, (219), 44 states have internal predecessors, (219), 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) [2024-11-20 02:05:58,807 INFO L276 IsEmpty]: Start isEmpty. Operand 913 states and 1148 transitions. [2024-11-20 02:05:58,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2024-11-20 02:05:58,811 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 02:05:58,811 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-20 02:05:58,822 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-20 02:05:59,012 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-20 02:05:59,012 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 02:05:59,013 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 02:05:59,013 INFO L85 PathProgramCache]: Analyzing trace with hash -419935368, now seen corresponding path program 2 times [2024-11-20 02:05:59,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 02:05:59,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749940918] [2024-11-20 02:05:59,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 02:05:59,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 02:05:59,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 02:06:00,554 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 83 proven. 1 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-20 02:06:00,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 02:06:00,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749940918] [2024-11-20 02:06:00,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1749940918] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 02:06:00,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [200340177] [2024-11-20 02:06:00,556 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-20 02:06:00,556 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 02:06:00,556 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 02:06:00,558 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 02:06:00,560 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-20 02:06:01,319 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-20 02:06:01,319 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 02:06:01,326 INFO L255 TraceCheckSpWp]: Trace formula consists of 742 conjuncts, 71 conjuncts are in the unsatisfiable core [2024-11-20 02:06:01,331 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 02:06:01,924 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 46 proven. 37 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-20 02:06:01,924 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 02:06:02,800 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 27 proven. 59 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-20 02:06:02,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [200340177] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 02:06:02,800 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 02:06:02,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 15, 15] total 34 [2024-11-20 02:06:02,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037877369] [2024-11-20 02:06:02,800 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 02:06:02,801 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-20 02:06:02,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 02:06:02,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-20 02:06:02,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=187, Invalid=935, Unknown=0, NotChecked=0, Total=1122 [2024-11-20 02:06:02,802 INFO L87 Difference]: Start difference. First operand 913 states and 1148 transitions. Second operand has 34 states, 34 states have (on average 6.352941176470588) internal successors, (216), 34 states have internal predecessors, (216), 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) [2024-11-20 02:06:04,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 02:06:04,291 INFO L93 Difference]: Finished difference Result 2677 states and 3305 transitions. [2024-11-20 02:06:04,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2024-11-20 02:06:04,291 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 6.352941176470588) internal successors, (216), 34 states have internal predecessors, (216), 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 95 [2024-11-20 02:06:04,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 02:06:04,297 INFO L225 Difference]: With dead ends: 2677 [2024-11-20 02:06:04,297 INFO L226 Difference]: Without dead ends: 1804 [2024-11-20 02:06:04,300 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1450 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=890, Invalid=4660, Unknown=0, NotChecked=0, Total=5550 [2024-11-20 02:06:04,301 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 416 mSDsluCounter, 462 mSDsCounter, 0 mSdLazyCounter, 1281 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 416 SdHoareTripleChecker+Valid, 487 SdHoareTripleChecker+Invalid, 1319 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 1281 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-20 02:06:04,301 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [416 Valid, 487 Invalid, 1319 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 1281 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-20 02:06:04,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1804 states. [2024-11-20 02:06:04,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1804 to 1034. [2024-11-20 02:06:04,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1034 states, 1033 states have (on average 1.2371732817037755) internal successors, (1278), 1033 states have internal predecessors, (1278), 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) [2024-11-20 02:06:04,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1034 states to 1034 states and 1278 transitions. [2024-11-20 02:06:04,333 INFO L78 Accepts]: Start accepts. Automaton has 1034 states and 1278 transitions. Word has length 95 [2024-11-20 02:06:04,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 02:06:04,333 INFO L471 AbstractCegarLoop]: Abstraction has 1034 states and 1278 transitions. [2024-11-20 02:06:04,334 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 6.352941176470588) internal successors, (216), 34 states have internal predecessors, (216), 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) [2024-11-20 02:06:04,334 INFO L276 IsEmpty]: Start isEmpty. Operand 1034 states and 1278 transitions. [2024-11-20 02:06:04,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2024-11-20 02:06:04,335 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 02:06:04,335 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 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] [2024-11-20 02:06:04,350 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-20 02:06:04,539 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 02:06:04,539 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 02:06:04,540 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 02:06:04,540 INFO L85 PathProgramCache]: Analyzing trace with hash -651407110, now seen corresponding path program 1 times [2024-11-20 02:06:04,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 02:06:04,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [118168884] [2024-11-20 02:06:04,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 02:06:04,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 02:06:04,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 02:06:05,337 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 140 proven. 4 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-11-20 02:06:05,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 02:06:05,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [118168884] [2024-11-20 02:06:05,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [118168884] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 02:06:05,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [642477633] [2024-11-20 02:06:05,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 02:06:05,337 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 02:06:05,338 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 02:06:05,340 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 02:06:05,342 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-20 02:06:05,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 02:06:05,819 INFO L255 TraceCheckSpWp]: Trace formula consists of 928 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-20 02:06:05,822 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 02:06:05,886 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 138 proven. 4 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-11-20 02:06:05,887 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 02:06:05,954 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 140 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2024-11-20 02:06:05,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [642477633] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-20 02:06:05,954 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-20 02:06:05,954 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7, 8] total 15 [2024-11-20 02:06:05,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820721712] [2024-11-20 02:06:05,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 02:06:05,955 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-20 02:06:05,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 02:06:05,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-20 02:06:05,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2024-11-20 02:06:05,956 INFO L87 Difference]: Start difference. First operand 1034 states and 1278 transitions. Second operand has 5 states, 5 states have (on average 17.8) internal successors, (89), 5 states have internal predecessors, (89), 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) [2024-11-20 02:06:05,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 02:06:05,978 INFO L93 Difference]: Finished difference Result 1085 states and 1331 transitions. [2024-11-20 02:06:05,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-20 02:06:05,979 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 5 states have internal predecessors, (89), 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 115 [2024-11-20 02:06:05,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 02:06:05,979 INFO L225 Difference]: With dead ends: 1085 [2024-11-20 02:06:05,979 INFO L226 Difference]: Without dead ends: 0 [2024-11-20 02:06:05,980 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 222 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2024-11-20 02:06:05,981 INFO L432 NwaCegarLoop]: 69 mSDtfsCounter, 1 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 249 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-20 02:06:05,981 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 249 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-20 02:06:05,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-20 02:06:05,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-20 02:06:05,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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) [2024-11-20 02:06:05,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-20 02:06:05,982 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 115 [2024-11-20 02:06:05,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 02:06:05,982 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-20 02:06:05,986 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 5 states have internal predecessors, (89), 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) [2024-11-20 02:06:05,987 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-20 02:06:05,987 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-20 02:06:05,991 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-20 02:06:06,006 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-20 02:06:06,192 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 02:06:06,195 INFO L407 BasicCegarLoop]: Path program histogram: [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 02:06:06,197 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-11-20 02:06:06,438 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-20 02:06:06,454 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 02:06:06 BoogieIcfgContainer [2024-11-20 02:06:06,454 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-20 02:06:06,455 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-20 02:06:06,455 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-20 02:06:06,455 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-20 02:06:06,456 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 02:05:18" (3/4) ... [2024-11-20 02:06:06,459 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-20 02:06:06,470 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2024-11-20 02:06:06,471 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2024-11-20 02:06:06,471 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-11-20 02:06:06,472 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-20 02:06:06,602 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-20 02:06:06,602 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-11-20 02:06:06,603 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-20 02:06:06,603 INFO L158 Benchmark]: Toolchain (without parser) took 49616.41ms. Allocated memory was 167.8MB in the beginning and 736.1MB in the end (delta: 568.3MB). Free memory was 117.2MB in the beginning and 321.0MB in the end (delta: -203.8MB). Peak memory consumption was 367.6MB. Max. memory is 16.1GB. [2024-11-20 02:06:06,604 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 167.8MB. Free memory is still 132.5MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-20 02:06:06,604 INFO L158 Benchmark]: CACSL2BoogieTranslator took 364.16ms. Allocated memory is still 167.8MB. Free memory was 117.1MB in the beginning and 100.8MB in the end (delta: 16.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-20 02:06:06,604 INFO L158 Benchmark]: Boogie Procedure Inliner took 69.91ms. Allocated memory is still 167.8MB. Free memory was 100.4MB in the beginning and 94.2MB in the end (delta: 6.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2024-11-20 02:06:06,604 INFO L158 Benchmark]: Boogie Preprocessor took 73.77ms. Allocated memory is still 167.8MB. Free memory was 94.2MB in the beginning and 90.1MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-20 02:06:06,604 INFO L158 Benchmark]: RCFGBuilder took 720.56ms. Allocated memory is still 167.8MB. Free memory was 89.8MB in the beginning and 53.4MB in the end (delta: 36.4MB). Peak memory consumption was 37.7MB. Max. memory is 16.1GB. [2024-11-20 02:06:06,605 INFO L158 Benchmark]: TraceAbstraction took 48233.38ms. Allocated memory was 167.8MB in the beginning and 736.1MB in the end (delta: 568.3MB). Free memory was 52.7MB in the beginning and 329.4MB in the end (delta: -276.7MB). Peak memory consumption was 294.2MB. Max. memory is 16.1GB. [2024-11-20 02:06:06,605 INFO L158 Benchmark]: Witness Printer took 147.96ms. Allocated memory is still 736.1MB. Free memory was 329.4MB in the beginning and 321.0MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-20 02:06:06,609 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 167.8MB. Free memory is still 132.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 364.16ms. Allocated memory is still 167.8MB. Free memory was 117.1MB in the beginning and 100.8MB in the end (delta: 16.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 69.91ms. Allocated memory is still 167.8MB. Free memory was 100.4MB in the beginning and 94.2MB in the end (delta: 6.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Preprocessor took 73.77ms. Allocated memory is still 167.8MB. Free memory was 94.2MB in the beginning and 90.1MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 720.56ms. Allocated memory is still 167.8MB. Free memory was 89.8MB in the beginning and 53.4MB in the end (delta: 36.4MB). Peak memory consumption was 37.7MB. Max. memory is 16.1GB. * TraceAbstraction took 48233.38ms. Allocated memory was 167.8MB in the beginning and 736.1MB in the end (delta: 568.3MB). Free memory was 52.7MB in the beginning and 329.4MB in the end (delta: -276.7MB). Peak memory consumption was 294.2MB. Max. memory is 16.1GB. * Witness Printer took 147.96ms. Allocated memory is still 736.1MB. Free memory was 329.4MB in the beginning and 321.0MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 21]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 62 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 47.9s, OverallIterations: 20, TraceHistogramMax: 5, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 14.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 3387 SdHoareTripleChecker+Valid, 6.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3387 mSDsluCounter, 6250 SdHoareTripleChecker+Invalid, 5.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 5230 mSDsCounter, 169 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 12121 IncrementalHoareTripleChecker+Invalid, 12290 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 169 mSolverCounterUnsat, 1020 mSDtfsCounter, 12121 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2017 GetRequests, 1450 SyntacticMatches, 3 SemanticMatches, 564 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12232 ImplicationChecksByTransitivity, 11.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1034occurred in iteration=19, InterpolantAutomatonStates: 374, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 20 MinimizatonAttempts, 1914 StatesRemovedByMinimization, 13 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.7s SsaConstructionTime, 4.7s SatisfiabilityAnalysisTime, 23.2s InterpolantComputationTime, 1978 NumberOfCodeBlocks, 1936 NumberOfCodeBlocksAsserted, 34 NumberOfCheckSat, 2706 ConstructedInterpolants, 0 QuantifiedInterpolants, 20302 SizeOfPredicates, 43 NumberOfNonLiveVariables, 5871 ConjunctsInSsa, 621 ConjunctsInUnsatCore, 41 InterpolantComputations, 11 PerfectInterpolantSequences, 1747/2069 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 87]: Loop Invariant Derived loop invariant: (((((((((((var_12 == 1) && (state_26 == 0)) && (state_8 == 0)) && (state_58 == 0)) && (state_28 <= 1)) && (state_15 == 0)) && (var_22 == 1)) && (mask_SORT_1 == 1)) && (0 <= state_28)) && (var_7 == 0)) || (((((((((((1 <= state_26) && (var_12 == 1)) && (state_8 == 0)) && (state_58 == 0)) && (state_28 <= 1)) && (state_15 == 0)) && (var_22 == 1)) && (mask_SORT_1 == 1)) && (0 <= state_28)) && (var_7 == 0)) && (state_26 <= 255))) RESULT: Ultimate proved your program to be correct! [2024-11-20 02:06:06,640 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE