./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../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 c7c6ca5d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.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-?-c7c6ca5-m [2024-11-08 19:12:32,867 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-08 19:12:32,940 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2024-11-08 19:12:32,944 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-08 19:12:32,946 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-08 19:12:32,971 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-08 19:12:32,971 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-08 19:12:32,971 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-08 19:12:32,972 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-08 19:12:32,972 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-08 19:12:32,972 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-08 19:12:32,972 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-08 19:12:32,973 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-08 19:12:32,973 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-08 19:12:32,973 INFO L153 SettingsManager]: * Use SBE=true [2024-11-08 19:12:32,973 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-08 19:12:32,974 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-08 19:12:32,974 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-08 19:12:32,974 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-08 19:12:32,975 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-08 19:12:32,975 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-08 19:12:32,975 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-08 19:12:32,976 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-08 19:12:32,976 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-08 19:12:32,976 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-08 19:12:32,976 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-08 19:12:32,977 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-08 19:12:32,977 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-08 19:12:32,977 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-08 19:12:32,977 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 19:12:32,978 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-08 19:12:32,978 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-08 19:12:32,978 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-08 19:12:32,978 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-08 19:12:32,979 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-08 19:12:32,979 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-08 19:12:32,979 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-08 19:12:32,979 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-08 19:12:32,979 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-08 19:12:32,980 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7fcc6d521e585376faa967e3fb44ecb88c57fe5091f07017ec46bf0d857d1eb6 [2024-11-08 19:12:33,171 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-08 19:12:33,204 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-08 19:12:33,208 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-08 19:12:33,210 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-08 19:12:33,213 INFO L274 PluginConnector]: CDTParser initialized [2024-11-08 19:12:33,214 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p04.c [2024-11-08 19:12:34,629 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-08 19:12:34,811 INFO L384 CDTParser]: Found 1 translation units. [2024-11-08 19:12:34,812 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p04.c [2024-11-08 19:12:34,828 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6839f877f/40d575496ad64ac0be4259434cb8076f/FLAG855300800 [2024-11-08 19:12:34,843 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6839f877f/40d575496ad64ac0be4259434cb8076f [2024-11-08 19:12:34,846 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-08 19:12:34,853 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-08 19:12:34,854 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-08 19:12:34,854 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-08 19:12:34,862 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-08 19:12:34,863 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 07:12:34" (1/1) ... [2024-11-08 19:12:34,864 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@319ef1cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:12:34, skipping insertion in model container [2024-11-08 19:12:34,865 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 07:12:34" (1/1) ... [2024-11-08 19:12:34,891 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-08 19:12:35,091 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] [2024-11-08 19:12:35,145 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 19:12:35,158 INFO L200 MainTranslator]: Completed pre-run [2024-11-08 19:12:35,168 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] [2024-11-08 19:12:35,202 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 19:12:35,216 INFO L204 MainTranslator]: Completed translation [2024-11-08 19:12:35,216 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:12:35 WrapperNode [2024-11-08 19:12:35,216 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-08 19:12:35,217 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-08 19:12:35,217 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-08 19:12:35,217 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-08 19:12:35,222 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:12:35" (1/1) ... [2024-11-08 19:12:35,242 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:12:35" (1/1) ... [2024-11-08 19:12:35,310 INFO L138 Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 341 [2024-11-08 19:12:35,310 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-08 19:12:35,310 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-08 19:12:35,310 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-08 19:12:35,314 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-08 19:12:35,327 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:12:35" (1/1) ... [2024-11-08 19:12:35,327 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:12:35" (1/1) ... [2024-11-08 19:12:35,332 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:12:35" (1/1) ... [2024-11-08 19:12:35,347 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-08 19:12:35,347 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:12:35" (1/1) ... [2024-11-08 19:12:35,347 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:12:35" (1/1) ... [2024-11-08 19:12:35,358 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:12:35" (1/1) ... [2024-11-08 19:12:35,361 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:12:35" (1/1) ... [2024-11-08 19:12:35,364 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:12:35" (1/1) ... [2024-11-08 19:12:35,367 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:12:35" (1/1) ... [2024-11-08 19:12:35,372 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-08 19:12:35,372 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-08 19:12:35,373 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-08 19:12:35,373 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-08 19:12:35,373 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:12:35" (1/1) ... [2024-11-08 19:12:35,378 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 19:12:35,391 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 19:12:35,410 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-08 19:12:35,420 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-08 19:12:35,460 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-08 19:12:35,461 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-08 19:12:35,461 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-08 19:12:35,461 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-08 19:12:35,554 INFO L238 CfgBuilder]: Building ICFG [2024-11-08 19:12:35,556 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-08 19:12:35,878 INFO L? ?]: Removed 136 outVars from TransFormulas that were not future-live. [2024-11-08 19:12:35,878 INFO L287 CfgBuilder]: Performing block encoding [2024-11-08 19:12:35,891 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-08 19:12:35,892 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-08 19:12:35,892 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 07:12:35 BoogieIcfgContainer [2024-11-08 19:12:35,893 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-08 19:12:35,896 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-08 19:12:35,897 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-08 19:12:35,900 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-08 19:12:35,900 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.11 07:12:34" (1/3) ... [2024-11-08 19:12:35,900 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1407a1cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 07:12:35, skipping insertion in model container [2024-11-08 19:12:35,901 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:12:35" (2/3) ... [2024-11-08 19:12:35,901 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1407a1cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 07:12:35, skipping insertion in model container [2024-11-08 19:12:35,901 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 07:12:35" (3/3) ... [2024-11-08 19:12:35,902 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p04.c [2024-11-08 19:12:35,948 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-08 19:12:35,948 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-08 19:12:35,999 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-08 19:12:36,007 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;@2a006da1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-08 19:12:36,008 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-08 19:12:36,017 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) [2024-11-08 19:12:36,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-08 19:12:36,022 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 19:12:36,023 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] [2024-11-08 19:12:36,023 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 19:12:36,026 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:12:36,027 INFO L85 PathProgramCache]: Analyzing trace with hash -11435034, now seen corresponding path program 1 times [2024-11-08 19:12:36,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 19:12:36,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961804295] [2024-11-08 19:12:36,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:12:36,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 19:12:36,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:12:36,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:12:36,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 19:12:36,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961804295] [2024-11-08 19:12:36,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [961804295] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 19:12:36,417 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 19:12:36,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 19:12:36,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134543775] [2024-11-08 19:12:36,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 19:12:36,430 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 19:12:36,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 19:12:36,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 19:12:36,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 19:12:36,452 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) [2024-11-08 19:12:36,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 19:12:36,486 INFO L93 Difference]: Finished difference Result 101 states and 147 transitions. [2024-11-08 19:12:36,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 19:12:36,489 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 [2024-11-08 19:12:36,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 19:12:36,496 INFO L225 Difference]: With dead ends: 101 [2024-11-08 19:12:36,496 INFO L226 Difference]: Without dead ends: 61 [2024-11-08 19:12:36,498 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 19:12:36,502 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 [2024-11-08 19:12:36,503 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] [2024-11-08 19:12:36,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2024-11-08 19:12:36,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2024-11-08 19:12:36,529 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) [2024-11-08 19:12:36,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 87 transitions. [2024-11-08 19:12:36,533 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 87 transitions. Word has length 25 [2024-11-08 19:12:36,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 19:12:36,534 INFO L471 AbstractCegarLoop]: Abstraction has 61 states and 87 transitions. [2024-11-08 19:12:36,535 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) [2024-11-08 19:12:36,535 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 87 transitions. [2024-11-08 19:12:36,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-08 19:12:36,536 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 19:12:36,536 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 19:12:36,537 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-08 19:12:36,537 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 19:12:36,537 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:12:36,537 INFO L85 PathProgramCache]: Analyzing trace with hash -352790771, now seen corresponding path program 1 times [2024-11-08 19:12:36,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 19:12:36,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468327450] [2024-11-08 19:12:36,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:12:36,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 19:12:36,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:12:36,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:12:36,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 19:12:36,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468327450] [2024-11-08 19:12:36,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [468327450] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 19:12:36,718 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 19:12:36,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 19:12:36,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292314801] [2024-11-08 19:12:36,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 19:12:36,719 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 19:12:36,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 19:12:36,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 19:12:36,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 19:12:36,720 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) [2024-11-08 19:12:36,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 19:12:36,745 INFO L93 Difference]: Finished difference Result 102 states and 145 transitions. [2024-11-08 19:12:36,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 19:12:36,747 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 [2024-11-08 19:12:36,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 19:12:36,748 INFO L225 Difference]: With dead ends: 102 [2024-11-08 19:12:36,748 INFO L226 Difference]: Without dead ends: 63 [2024-11-08 19:12:36,748 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 19:12:36,750 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 [2024-11-08 19:12:36,750 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] [2024-11-08 19:12:36,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2024-11-08 19:12:36,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2024-11-08 19:12:36,757 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) [2024-11-08 19:12:36,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 89 transitions. [2024-11-08 19:12:36,758 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 89 transitions. Word has length 26 [2024-11-08 19:12:36,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 19:12:36,759 INFO L471 AbstractCegarLoop]: Abstraction has 63 states and 89 transitions. [2024-11-08 19:12:36,759 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) [2024-11-08 19:12:36,759 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 89 transitions. [2024-11-08 19:12:36,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-08 19:12:36,760 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 19:12:36,760 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] [2024-11-08 19:12:36,760 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-08 19:12:36,760 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 19:12:36,760 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:12:36,761 INFO L85 PathProgramCache]: Analyzing trace with hash 850422175, now seen corresponding path program 1 times [2024-11-08 19:12:36,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 19:12:36,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566251536] [2024-11-08 19:12:36,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:12:36,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 19:12:36,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:12:36,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:12:36,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 19:12:36,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566251536] [2024-11-08 19:12:36,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1566251536] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 19:12:36,999 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 19:12:36,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 19:12:37,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501839250] [2024-11-08 19:12:37,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 19:12:37,000 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 19:12:37,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 19:12:37,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 19:12:37,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 19:12:37,001 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) [2024-11-08 19:12:37,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 19:12:37,022 INFO L93 Difference]: Finished difference Result 104 states and 146 transitions. [2024-11-08 19:12:37,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 19:12:37,023 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 [2024-11-08 19:12:37,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 19:12:37,023 INFO L225 Difference]: With dead ends: 104 [2024-11-08 19:12:37,023 INFO L226 Difference]: Without dead ends: 63 [2024-11-08 19:12:37,024 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 19:12:37,024 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 [2024-11-08 19:12:37,025 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] [2024-11-08 19:12:37,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2024-11-08 19:12:37,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2024-11-08 19:12:37,028 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) [2024-11-08 19:12:37,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 88 transitions. [2024-11-08 19:12:37,029 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 88 transitions. Word has length 27 [2024-11-08 19:12:37,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 19:12:37,029 INFO L471 AbstractCegarLoop]: Abstraction has 63 states and 88 transitions. [2024-11-08 19:12:37,029 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) [2024-11-08 19:12:37,029 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 88 transitions. [2024-11-08 19:12:37,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-08 19:12:37,030 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 19:12:37,030 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] [2024-11-08 19:12:37,030 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-08 19:12:37,030 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 19:12:37,031 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:12:37,031 INFO L85 PathProgramCache]: Analyzing trace with hash 1502170580, now seen corresponding path program 1 times [2024-11-08 19:12:37,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 19:12:37,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123180388] [2024-11-08 19:12:37,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:12:37,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 19:12:37,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:12:37,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:12:37,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 19:12:37,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123180388] [2024-11-08 19:12:37,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1123180388] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 19:12:37,486 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 19:12:37,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-08 19:12:37,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833236794] [2024-11-08 19:12:37,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 19:12:37,486 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-08 19:12:37,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 19:12:37,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-08 19:12:37,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-08 19:12:37,487 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) [2024-11-08 19:12:37,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 19:12:37,621 INFO L93 Difference]: Finished difference Result 114 states and 158 transitions. [2024-11-08 19:12:37,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-08 19:12:37,621 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 [2024-11-08 19:12:37,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 19:12:37,622 INFO L225 Difference]: With dead ends: 114 [2024-11-08 19:12:37,622 INFO L226 Difference]: Without dead ends: 73 [2024-11-08 19:12:37,622 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 [2024-11-08 19:12:37,623 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 [2024-11-08 19:12:37,624 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] [2024-11-08 19:12:37,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2024-11-08 19:12:37,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 72. [2024-11-08 19:12:37,631 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) [2024-11-08 19:12:37,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 100 transitions. [2024-11-08 19:12:37,635 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 100 transitions. Word has length 28 [2024-11-08 19:12:37,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 19:12:37,635 INFO L471 AbstractCegarLoop]: Abstraction has 72 states and 100 transitions. [2024-11-08 19:12:37,636 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) [2024-11-08 19:12:37,636 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 100 transitions. [2024-11-08 19:12:37,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-08 19:12:37,636 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 19:12:37,637 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] [2024-11-08 19:12:37,637 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-08 19:12:37,637 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 19:12:37,637 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:12:37,638 INFO L85 PathProgramCache]: Analyzing trace with hash -358005860, now seen corresponding path program 1 times [2024-11-08 19:12:37,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 19:12:37,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481105060] [2024-11-08 19:12:37,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:12:37,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 19:12:37,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:12:37,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:12:37,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 19:12:37,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481105060] [2024-11-08 19:12:37,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [481105060] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 19:12:37,920 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 19:12:37,920 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-08 19:12:37,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055567770] [2024-11-08 19:12:37,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 19:12:37,921 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 19:12:37,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 19:12:37,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 19:12:37,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-08 19:12:37,922 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) [2024-11-08 19:12:37,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 19:12:37,966 INFO L93 Difference]: Finished difference Result 128 states and 176 transitions. [2024-11-08 19:12:37,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 19:12:37,968 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 [2024-11-08 19:12:37,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 19:12:37,969 INFO L225 Difference]: With dead ends: 128 [2024-11-08 19:12:37,969 INFO L226 Difference]: Without dead ends: 78 [2024-11-08 19:12:37,969 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 [2024-11-08 19:12:37,970 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 [2024-11-08 19:12:37,971 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] [2024-11-08 19:12:37,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2024-11-08 19:12:37,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2024-11-08 19:12:37,978 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) [2024-11-08 19:12:37,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 106 transitions. [2024-11-08 19:12:37,982 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 106 transitions. Word has length 29 [2024-11-08 19:12:37,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 19:12:37,983 INFO L471 AbstractCegarLoop]: Abstraction has 78 states and 106 transitions. [2024-11-08 19:12:37,983 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) [2024-11-08 19:12:37,983 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 106 transitions. [2024-11-08 19:12:37,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-08 19:12:37,984 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 19:12:37,984 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] [2024-11-08 19:12:37,984 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-08 19:12:37,984 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 19:12:37,984 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:12:37,984 INFO L85 PathProgramCache]: Analyzing trace with hash 167789105, now seen corresponding path program 1 times [2024-11-08 19:12:37,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 19:12:37,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509893315] [2024-11-08 19:12:37,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:12:37,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 19:12:38,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:12:38,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:12:38,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 19:12:38,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1509893315] [2024-11-08 19:12:38,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1509893315] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 19:12:38,109 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 19:12:38,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-08 19:12:38,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604499224] [2024-11-08 19:12:38,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 19:12:38,110 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-08 19:12:38,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 19:12:38,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-08 19:12:38,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-08 19:12:38,111 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) [2024-11-08 19:12:38,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 19:12:38,147 INFO L93 Difference]: Finished difference Result 166 states and 220 transitions. [2024-11-08 19:12:38,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 19:12:38,148 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 [2024-11-08 19:12:38,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 19:12:38,148 INFO L225 Difference]: With dead ends: 166 [2024-11-08 19:12:38,149 INFO L226 Difference]: Without dead ends: 110 [2024-11-08 19:12:38,149 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 [2024-11-08 19:12:38,150 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 [2024-11-08 19:12:38,151 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] [2024-11-08 19:12:38,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2024-11-08 19:12:38,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 80. [2024-11-08 19:12:38,155 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) [2024-11-08 19:12:38,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 108 transitions. [2024-11-08 19:12:38,156 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 108 transitions. Word has length 29 [2024-11-08 19:12:38,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 19:12:38,156 INFO L471 AbstractCegarLoop]: Abstraction has 80 states and 108 transitions. [2024-11-08 19:12:38,157 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) [2024-11-08 19:12:38,157 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 108 transitions. [2024-11-08 19:12:38,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-11-08 19:12:38,157 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 19:12:38,158 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] [2024-11-08 19:12:38,158 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-08 19:12:38,158 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 19:12:38,158 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:12:38,158 INFO L85 PathProgramCache]: Analyzing trace with hash 976517016, now seen corresponding path program 1 times [2024-11-08 19:12:38,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 19:12:38,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [915561067] [2024-11-08 19:12:38,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:12:38,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 19:12:38,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:12:38,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:12:38,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 19:12:38,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [915561067] [2024-11-08 19:12:38,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [915561067] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 19:12:38,304 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 19:12:38,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-08 19:12:38,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862342244] [2024-11-08 19:12:38,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 19:12:38,305 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-08 19:12:38,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 19:12:38,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-08 19:12:38,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-08 19:12:38,306 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) [2024-11-08 19:12:38,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 19:12:38,425 INFO L93 Difference]: Finished difference Result 148 states and 195 transitions. [2024-11-08 19:12:38,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 19:12:38,426 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 [2024-11-08 19:12:38,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 19:12:38,426 INFO L225 Difference]: With dead ends: 148 [2024-11-08 19:12:38,426 INFO L226 Difference]: Without dead ends: 92 [2024-11-08 19:12:38,427 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 [2024-11-08 19:12:38,428 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 [2024-11-08 19:12:38,428 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] [2024-11-08 19:12:38,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2024-11-08 19:12:38,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 82. [2024-11-08 19:12:38,436 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) [2024-11-08 19:12:38,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 110 transitions. [2024-11-08 19:12:38,436 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 110 transitions. Word has length 30 [2024-11-08 19:12:38,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 19:12:38,436 INFO L471 AbstractCegarLoop]: Abstraction has 82 states and 110 transitions. [2024-11-08 19:12:38,437 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) [2024-11-08 19:12:38,437 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 110 transitions. [2024-11-08 19:12:38,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-08 19:12:38,438 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 19:12:38,438 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] [2024-11-08 19:12:38,438 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-08 19:12:38,442 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 19:12:38,442 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:12:38,442 INFO L85 PathProgramCache]: Analyzing trace with hash 1363753517, now seen corresponding path program 1 times [2024-11-08 19:12:38,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 19:12:38,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [795487263] [2024-11-08 19:12:38,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:12:38,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 19:12:38,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:12:38,945 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:12:38,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 19:12:38,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [795487263] [2024-11-08 19:12:38,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [795487263] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 19:12:38,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [795535127] [2024-11-08 19:12:38,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:12:38,945 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 19:12:38,946 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 19:12:38,951 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) [2024-11-08 19:12:38,953 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-08 19:12:39,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:12:39,114 INFO L255 TraceCheckSpWp]: Trace formula consists of 358 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-11-08 19:12:39,126 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 19:12:39,353 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:12:39,353 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 19:12:39,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [795535127] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 19:12:39,353 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 19:12:39,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 9 [2024-11-08 19:12:39,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749831044] [2024-11-08 19:12:39,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 19:12:39,356 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 19:12:39,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 19:12:39,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 19:12:39,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-11-08 19:12:39,357 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) [2024-11-08 19:12:39,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 19:12:39,508 INFO L93 Difference]: Finished difference Result 155 states and 205 transitions. [2024-11-08 19:12:39,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 19:12:39,509 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 [2024-11-08 19:12:39,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 19:12:39,510 INFO L225 Difference]: With dead ends: 155 [2024-11-08 19:12:39,510 INFO L226 Difference]: Without dead ends: 99 [2024-11-08 19:12:39,510 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 [2024-11-08 19:12:39,511 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, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 19:12:39,511 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 69 Invalid, 184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 183 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 19:12:39,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2024-11-08 19:12:39,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 94. [2024-11-08 19:12:39,518 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) [2024-11-08 19:12:39,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 122 transitions. [2024-11-08 19:12:39,518 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 122 transitions. Word has length 49 [2024-11-08 19:12:39,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 19:12:39,518 INFO L471 AbstractCegarLoop]: Abstraction has 94 states and 122 transitions. [2024-11-08 19:12:39,519 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) [2024-11-08 19:12:39,519 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 122 transitions. [2024-11-08 19:12:39,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-11-08 19:12:39,523 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 19:12:39,523 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] [2024-11-08 19:12:39,541 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-08 19:12:39,728 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 [2024-11-08 19:12:39,729 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 19:12:39,729 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:12:39,729 INFO L85 PathProgramCache]: Analyzing trace with hash 1274866513, now seen corresponding path program 1 times [2024-11-08 19:12:39,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 19:12:39,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142621173] [2024-11-08 19:12:39,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:12:39,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 19:12:39,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:12:40,155 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:12:40,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 19:12:40,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142621173] [2024-11-08 19:12:40,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [142621173] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 19:12:40,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1090230911] [2024-11-08 19:12:40,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:12:40,156 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 19:12:40,156 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 19:12:40,160 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) [2024-11-08 19:12:40,163 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-08 19:12:40,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:12:40,311 INFO L255 TraceCheckSpWp]: Trace formula consists of 361 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-11-08 19:12:40,315 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 19:12:40,572 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:12:40,573 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 19:12:40,721 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 19:12:40,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1090230911] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 19:12:40,721 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 19:12:40,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 6] total 16 [2024-11-08 19:12:40,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31052384] [2024-11-08 19:12:40,722 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 19:12:40,722 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-08 19:12:40,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 19:12:40,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-08 19:12:40,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2024-11-08 19:12:40,723 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) [2024-11-08 19:12:40,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 19:12:40,961 INFO L93 Difference]: Finished difference Result 139 states and 181 transitions. [2024-11-08 19:12:40,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-08 19:12:40,962 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 [2024-11-08 19:12:40,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 19:12:40,962 INFO L225 Difference]: With dead ends: 139 [2024-11-08 19:12:40,963 INFO L226 Difference]: Without dead ends: 83 [2024-11-08 19:12:40,963 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 [2024-11-08 19:12:40,964 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 [2024-11-08 19:12:40,964 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] [2024-11-08 19:12:40,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2024-11-08 19:12:40,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 82. [2024-11-08 19:12:40,967 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) [2024-11-08 19:12:40,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 105 transitions. [2024-11-08 19:12:40,967 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 105 transitions. Word has length 50 [2024-11-08 19:12:40,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 19:12:40,968 INFO L471 AbstractCegarLoop]: Abstraction has 82 states and 105 transitions. [2024-11-08 19:12:40,968 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) [2024-11-08 19:12:40,968 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 105 transitions. [2024-11-08 19:12:40,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-08 19:12:40,969 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 19:12:40,969 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] [2024-11-08 19:12:40,984 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-08 19:12:41,173 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 [2024-11-08 19:12:41,174 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 19:12:41,174 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:12:41,174 INFO L85 PathProgramCache]: Analyzing trace with hash 936178296, now seen corresponding path program 1 times [2024-11-08 19:12:41,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 19:12:41,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673243925] [2024-11-08 19:12:41,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:12:41,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 19:12:41,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:12:41,807 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-08 19:12:41,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 19:12:41,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1673243925] [2024-11-08 19:12:41,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1673243925] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 19:12:41,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1147867328] [2024-11-08 19:12:41,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:12:41,808 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 19:12:41,808 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 19:12:41,809 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) [2024-11-08 19:12:41,812 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-08 19:12:41,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:12:41,972 INFO L255 TraceCheckSpWp]: Trace formula consists of 362 conjuncts, 55 conjuncts are in the unsatisfiable core [2024-11-08 19:12:41,976 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 19:12:42,340 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:12:42,344 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 19:12:43,284 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:12:43,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1147867328] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 19:12:43,285 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 19:12:43,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 11] total 26 [2024-11-08 19:12:43,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359325148] [2024-11-08 19:12:43,285 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 19:12:43,286 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-08 19:12:43,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 19:12:43,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-08 19:12:43,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=555, Unknown=0, NotChecked=0, Total=650 [2024-11-08 19:12:43,290 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) [2024-11-08 19:12:43,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 19:12:43,865 INFO L93 Difference]: Finished difference Result 126 states and 162 transitions. [2024-11-08 19:12:43,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-08 19:12:43,866 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 [2024-11-08 19:12:43,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 19:12:43,870 INFO L225 Difference]: With dead ends: 126 [2024-11-08 19:12:43,870 INFO L226 Difference]: Without dead ends: 82 [2024-11-08 19:12:43,871 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=174, Invalid=882, Unknown=0, NotChecked=0, Total=1056 [2024-11-08 19:12:43,871 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 [2024-11-08 19:12:43,872 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] [2024-11-08 19:12:43,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2024-11-08 19:12:43,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2024-11-08 19:12:43,883 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) [2024-11-08 19:12:43,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 104 transitions. [2024-11-08 19:12:43,887 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 104 transitions. Word has length 51 [2024-11-08 19:12:43,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 19:12:43,887 INFO L471 AbstractCegarLoop]: Abstraction has 82 states and 104 transitions. [2024-11-08 19:12:43,888 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) [2024-11-08 19:12:43,888 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 104 transitions. [2024-11-08 19:12:43,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-11-08 19:12:43,891 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 19:12:43,892 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] [2024-11-08 19:12:43,919 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-08 19:12:44,092 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 [2024-11-08 19:12:44,092 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 19:12:44,093 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:12:44,093 INFO L85 PathProgramCache]: Analyzing trace with hash 521301335, now seen corresponding path program 1 times [2024-11-08 19:12:44,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 19:12:44,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1150513097] [2024-11-08 19:12:44,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:12:44,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 19:12:44,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:12:44,860 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:12:44,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 19:12:44,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1150513097] [2024-11-08 19:12:44,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1150513097] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 19:12:44,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [656558377] [2024-11-08 19:12:44,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:12:44,861 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 19:12:44,861 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 19:12:44,866 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) [2024-11-08 19:12:44,870 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-08 19:12:45,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:12:45,043 INFO L255 TraceCheckSpWp]: Trace formula consists of 363 conjuncts, 60 conjuncts are in the unsatisfiable core [2024-11-08 19:12:45,050 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 19:12:45,363 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:12:45,363 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 19:12:46,039 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:12:46,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [656558377] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 19:12:46,041 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 19:12:46,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9, 9] total 21 [2024-11-08 19:12:46,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335480622] [2024-11-08 19:12:46,042 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 19:12:46,042 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-08 19:12:46,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 19:12:46,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-08 19:12:46,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=335, Unknown=0, NotChecked=0, Total=420 [2024-11-08 19:12:46,045 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) [2024-11-08 19:12:46,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 19:12:46,364 INFO L93 Difference]: Finished difference Result 149 states and 188 transitions. [2024-11-08 19:12:46,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-08 19:12:46,365 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 [2024-11-08 19:12:46,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 19:12:46,366 INFO L225 Difference]: With dead ends: 149 [2024-11-08 19:12:46,366 INFO L226 Difference]: Without dead ends: 105 [2024-11-08 19:12:46,366 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 184 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=151, Invalid=551, Unknown=0, NotChecked=0, Total=702 [2024-11-08 19:12:46,367 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 136 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 426 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s 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, 0.2s IncrementalHoareTripleChecker+Time [2024-11-08 19:12:46,367 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 137 Invalid, 429 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 426 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-08 19:12:46,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2024-11-08 19:12:46,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 95. [2024-11-08 19:12:46,369 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) [2024-11-08 19:12:46,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 121 transitions. [2024-11-08 19:12:46,370 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 121 transitions. Word has length 52 [2024-11-08 19:12:46,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 19:12:46,370 INFO L471 AbstractCegarLoop]: Abstraction has 95 states and 121 transitions. [2024-11-08 19:12:46,370 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) [2024-11-08 19:12:46,370 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 121 transitions. [2024-11-08 19:12:46,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-11-08 19:12:46,371 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 19:12:46,371 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] [2024-11-08 19:12:46,386 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-08 19:12:46,575 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 [2024-11-08 19:12:46,576 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 19:12:46,576 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:12:46,577 INFO L85 PathProgramCache]: Analyzing trace with hash 1675724371, now seen corresponding path program 1 times [2024-11-08 19:12:46,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 19:12:46,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912753395] [2024-11-08 19:12:46,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:12:46,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 19:12:46,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:12:47,762 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 32 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:12:47,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 19:12:47,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912753395] [2024-11-08 19:12:47,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1912753395] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 19:12:47,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1459657420] [2024-11-08 19:12:47,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:12:47,763 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 19:12:47,763 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 19:12:47,765 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) [2024-11-08 19:12:47,772 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-08 19:12:47,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:12:47,996 INFO L255 TraceCheckSpWp]: Trace formula consists of 549 conjuncts, 77 conjuncts are in the unsatisfiable core [2024-11-08 19:12:48,001 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 19:12:48,511 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 32 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:12:48,511 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 19:12:49,223 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 18 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:12:49,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1459657420] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 19:12:49,224 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 19:12:49,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 15, 15] total 38 [2024-11-08 19:12:49,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255921406] [2024-11-08 19:12:49,225 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 19:12:49,225 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-11-08 19:12:49,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 19:12:49,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-11-08 19:12:49,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=214, Invalid=1192, Unknown=0, NotChecked=0, Total=1406 [2024-11-08 19:12:49,226 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) [2024-11-08 19:12:50,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 19:12:50,958 INFO L93 Difference]: Finished difference Result 398 states and 493 transitions. [2024-11-08 19:12:50,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2024-11-08 19:12:50,959 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 [2024-11-08 19:12:50,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 19:12:50,963 INFO L225 Difference]: With dead ends: 398 [2024-11-08 19:12:50,963 INFO L226 Difference]: Without dead ends: 354 [2024-11-08 19:12:50,967 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1942 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=939, Invalid=5541, Unknown=0, NotChecked=0, Total=6480 [2024-11-08 19:12:50,968 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 587 mSDsluCounter, 543 mSDsCounter, 0 mSdLazyCounter, 1425 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s 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, 0.8s IncrementalHoareTripleChecker+Time [2024-11-08 19:12:50,968 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [587 Valid, 568 Invalid, 1448 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 1425 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-08 19:12:50,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2024-11-08 19:12:50,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 170. [2024-11-08 19:12:50,973 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) [2024-11-08 19:12:50,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 216 transitions. [2024-11-08 19:12:50,973 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 216 transitions. Word has length 72 [2024-11-08 19:12:50,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 19:12:50,973 INFO L471 AbstractCegarLoop]: Abstraction has 170 states and 216 transitions. [2024-11-08 19:12:50,973 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) [2024-11-08 19:12:50,973 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 216 transitions. [2024-11-08 19:12:50,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-11-08 19:12:50,974 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 19:12:50,974 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] [2024-11-08 19:12:50,992 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-08 19:12:51,178 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 [2024-11-08 19:12:51,179 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 19:12:51,179 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:12:51,179 INFO L85 PathProgramCache]: Analyzing trace with hash 1198648893, now seen corresponding path program 1 times [2024-11-08 19:12:51,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 19:12:51,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542618697] [2024-11-08 19:12:51,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:12:51,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 19:12:51,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:12:51,735 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 42 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:12:51,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 19:12:51,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542618697] [2024-11-08 19:12:51,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1542618697] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 19:12:51,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [700057961] [2024-11-08 19:12:51,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:12:51,736 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 19:12:51,737 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 19:12:51,739 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) [2024-11-08 19:12:51,750 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-08 19:12:51,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:12:51,953 INFO L255 TraceCheckSpWp]: Trace formula consists of 552 conjuncts, 51 conjuncts are in the unsatisfiable core [2024-11-08 19:12:51,958 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 19:12:52,310 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 42 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:12:52,310 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 19:12:52,625 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 40 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:12:52,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [700057961] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 19:12:52,625 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 19:12:52,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10, 11] total 25 [2024-11-08 19:12:52,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356336757] [2024-11-08 19:12:52,625 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 19:12:52,626 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-08 19:12:52,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 19:12:52,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-08 19:12:52,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=496, Unknown=0, NotChecked=0, Total=600 [2024-11-08 19:12:52,627 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) [2024-11-08 19:12:53,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 19:12:53,311 INFO L93 Difference]: Finished difference Result 403 states and 519 transitions. [2024-11-08 19:12:53,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-08 19:12:53,316 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 [2024-11-08 19:12:53,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 19:12:53,317 INFO L225 Difference]: With dead ends: 403 [2024-11-08 19:12:53,318 INFO L226 Difference]: Without dead ends: 271 [2024-11-08 19:12:53,319 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 [2024-11-08 19:12:53,320 INFO L432 NwaCegarLoop]: 31 mSDtfsCounter, 126 mSDsluCounter, 329 mSDsCounter, 0 mSdLazyCounter, 1246 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s 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, 0.5s IncrementalHoareTripleChecker+Time [2024-11-08 19:12:53,320 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [126 Valid, 360 Invalid, 1253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 1246 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-08 19:12:53,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2024-11-08 19:12:53,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 256. [2024-11-08 19:12:53,331 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) [2024-11-08 19:12:53,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 331 transitions. [2024-11-08 19:12:53,332 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 331 transitions. Word has length 73 [2024-11-08 19:12:53,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 19:12:53,333 INFO L471 AbstractCegarLoop]: Abstraction has 256 states and 331 transitions. [2024-11-08 19:12:53,333 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) [2024-11-08 19:12:53,333 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 331 transitions. [2024-11-08 19:12:53,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-11-08 19:12:53,333 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 19:12:53,333 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] [2024-11-08 19:12:53,351 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-08 19:12:53,534 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 [2024-11-08 19:12:53,535 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 19:12:53,535 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:12:53,535 INFO L85 PathProgramCache]: Analyzing trace with hash 1860744854, now seen corresponding path program 1 times [2024-11-08 19:12:53,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 19:12:53,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593894293] [2024-11-08 19:12:53,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:12:53,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 19:12:53,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:12:54,169 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 39 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:12:54,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 19:12:54,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593894293] [2024-11-08 19:12:54,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [593894293] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 19:12:54,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1357493374] [2024-11-08 19:12:54,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:12:54,170 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 19:12:54,170 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 19:12:54,171 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) [2024-11-08 19:12:54,172 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-08 19:12:54,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:12:54,424 INFO L255 TraceCheckSpWp]: Trace formula consists of 552 conjuncts, 44 conjuncts are in the unsatisfiable core [2024-11-08 19:12:54,427 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 19:12:54,693 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 39 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:12:54,694 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 19:12:54,969 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 35 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:12:54,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1357493374] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 19:12:54,969 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 19:12:54,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 13, 13] total 32 [2024-11-08 19:12:54,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469336914] [2024-11-08 19:12:54,969 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 19:12:54,970 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-08 19:12:54,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 19:12:54,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-08 19:12:54,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=162, Invalid=830, Unknown=0, NotChecked=0, Total=992 [2024-11-08 19:12:54,971 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) [2024-11-08 19:12:56,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 19:12:56,310 INFO L93 Difference]: Finished difference Result 948 states and 1201 transitions. [2024-11-08 19:12:56,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-11-08 19:12:56,311 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 [2024-11-08 19:12:56,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 19:12:56,313 INFO L225 Difference]: With dead ends: 948 [2024-11-08 19:12:56,313 INFO L226 Difference]: Without dead ends: 730 [2024-11-08 19:12:56,315 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 778 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=426, Invalid=2226, Unknown=0, NotChecked=0, Total=2652 [2024-11-08 19:12:56,315 INFO L432 NwaCegarLoop]: 65 mSDtfsCounter, 313 mSDsluCounter, 964 mSDsCounter, 0 mSdLazyCounter, 2171 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s 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 [2024-11-08 19:12:56,315 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] [2024-11-08 19:12:56,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 730 states. [2024-11-08 19:12:56,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 730 to 378. [2024-11-08 19:12:56,326 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) [2024-11-08 19:12:56,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 378 states to 378 states and 485 transitions. [2024-11-08 19:12:56,328 INFO L78 Accepts]: Start accepts. Automaton has 378 states and 485 transitions. Word has length 73 [2024-11-08 19:12:56,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 19:12:56,328 INFO L471 AbstractCegarLoop]: Abstraction has 378 states and 485 transitions. [2024-11-08 19:12:56,328 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) [2024-11-08 19:12:56,328 INFO L276 IsEmpty]: Start isEmpty. Operand 378 states and 485 transitions. [2024-11-08 19:12:56,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-11-08 19:12:56,329 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 19:12:56,333 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] [2024-11-08 19:12:56,347 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-08 19:12:56,533 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 [2024-11-08 19:12:56,534 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 19:12:56,534 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:12:56,535 INFO L85 PathProgramCache]: Analyzing trace with hash -1033696741, now seen corresponding path program 1 times [2024-11-08 19:12:56,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 19:12:56,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587285136] [2024-11-08 19:12:56,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:12:56,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 19:12:56,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:12:57,004 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-08 19:12:57,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 19:12:57,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587285136] [2024-11-08 19:12:57,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1587285136] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 19:12:57,004 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 19:12:57,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-08 19:12:57,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148926415] [2024-11-08 19:12:57,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 19:12:57,005 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 19:12:57,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 19:12:57,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 19:12:57,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-08 19:12:57,006 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) [2024-11-08 19:12:57,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 19:12:57,154 INFO L93 Difference]: Finished difference Result 728 states and 937 transitions. [2024-11-08 19:12:57,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 19:12:57,155 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 [2024-11-08 19:12:57,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 19:12:57,156 INFO L225 Difference]: With dead ends: 728 [2024-11-08 19:12:57,157 INFO L226 Difference]: Without dead ends: 388 [2024-11-08 19:12:57,157 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 [2024-11-08 19:12:57,157 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 [2024-11-08 19:12:57,158 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] [2024-11-08 19:12:57,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 388 states. [2024-11-08 19:12:57,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 388 to 386. [2024-11-08 19:12:57,168 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) [2024-11-08 19:12:57,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 495 transitions. [2024-11-08 19:12:57,169 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 495 transitions. Word has length 74 [2024-11-08 19:12:57,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 19:12:57,170 INFO L471 AbstractCegarLoop]: Abstraction has 386 states and 495 transitions. [2024-11-08 19:12:57,170 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) [2024-11-08 19:12:57,170 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 495 transitions. [2024-11-08 19:12:57,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-11-08 19:12:57,171 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 19:12:57,171 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] [2024-11-08 19:12:57,171 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-08 19:12:57,171 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 19:12:57,172 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:12:57,172 INFO L85 PathProgramCache]: Analyzing trace with hash 1955322614, now seen corresponding path program 1 times [2024-11-08 19:12:57,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 19:12:57,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641513270] [2024-11-08 19:12:57,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:12:57,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 19:12:57,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:12:58,186 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-08 19:12:58,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 19:12:58,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641513270] [2024-11-08 19:12:58,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1641513270] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 19:12:58,187 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 19:12:58,187 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-08 19:12:58,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919301792] [2024-11-08 19:12:58,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 19:12:58,188 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 19:12:58,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 19:12:58,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 19:12:58,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-08 19:12:58,189 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) [2024-11-08 19:12:58,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 19:12:58,227 INFO L93 Difference]: Finished difference Result 728 states and 934 transitions. [2024-11-08 19:12:58,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 19:12:58,228 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 [2024-11-08 19:12:58,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 19:12:58,230 INFO L225 Difference]: With dead ends: 728 [2024-11-08 19:12:58,230 INFO L226 Difference]: Without dead ends: 382 [2024-11-08 19:12:58,231 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 [2024-11-08 19:12:58,231 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 [2024-11-08 19:12:58,231 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] [2024-11-08 19:12:58,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states. [2024-11-08 19:12:58,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 382. [2024-11-08 19:12:58,242 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) [2024-11-08 19:12:58,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 489 transitions. [2024-11-08 19:12:58,245 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 489 transitions. Word has length 74 [2024-11-08 19:12:58,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 19:12:58,245 INFO L471 AbstractCegarLoop]: Abstraction has 382 states and 489 transitions. [2024-11-08 19:12:58,246 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) [2024-11-08 19:12:58,246 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 489 transitions. [2024-11-08 19:12:58,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2024-11-08 19:12:58,247 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 19:12:58,247 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] [2024-11-08 19:12:58,247 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-08 19:12:58,248 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 19:12:58,248 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:12:58,248 INFO L85 PathProgramCache]: Analyzing trace with hash 1596295873, now seen corresponding path program 2 times [2024-11-08 19:12:58,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 19:12:58,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789888889] [2024-11-08 19:12:58,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:12:58,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 19:12:58,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:12:58,782 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 97 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:12:58,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 19:12:58,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789888889] [2024-11-08 19:12:58,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1789888889] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 19:12:58,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [416979259] [2024-11-08 19:12:58,783 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 19:12:58,784 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 19:12:58,784 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 19:12:58,786 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) [2024-11-08 19:12:58,787 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-08 19:12:59,460 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-08 19:12:59,460 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 19:12:59,467 INFO L255 TraceCheckSpWp]: Trace formula consists of 738 conjuncts, 49 conjuncts are in the unsatisfiable core [2024-11-08 19:12:59,471 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 19:12:59,695 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 80 proven. 4 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-08 19:12:59,696 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 19:13:00,061 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 78 proven. 6 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-08 19:13:00,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [416979259] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 19:13:00,061 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 19:13:00,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 11] total 24 [2024-11-08 19:13:00,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905474557] [2024-11-08 19:13:00,062 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 19:13:00,063 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-08 19:13:00,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 19:13:00,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-08 19:13:00,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=473, Unknown=0, NotChecked=0, Total=552 [2024-11-08 19:13:00,068 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) [2024-11-08 19:13:01,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 19:13:01,130 INFO L93 Difference]: Finished difference Result 1112 states and 1439 transitions. [2024-11-08 19:13:01,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-08 19:13:01,131 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 [2024-11-08 19:13:01,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 19:13:01,134 INFO L225 Difference]: With dead ends: 1112 [2024-11-08 19:13:01,134 INFO L226 Difference]: Without dead ends: 772 [2024-11-08 19:13:01,135 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 348 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=296, Invalid=1684, Unknown=0, NotChecked=0, Total=1980 [2024-11-08 19:13:01,135 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 264 mSDsluCounter, 347 mSDsCounter, 0 mSdLazyCounter, 1205 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s 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, 0.7s IncrementalHoareTripleChecker+Time [2024-11-08 19:13:01,135 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [264 Valid, 387 Invalid, 1212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 1205 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-08 19:13:01,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 772 states. [2024-11-08 19:13:01,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 772 to 642. [2024-11-08 19:13:01,145 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) [2024-11-08 19:13:01,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 642 states to 642 states and 808 transitions. [2024-11-08 19:13:01,146 INFO L78 Accepts]: Start accepts. Automaton has 642 states and 808 transitions. Word has length 93 [2024-11-08 19:13:01,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 19:13:01,147 INFO L471 AbstractCegarLoop]: Abstraction has 642 states and 808 transitions. [2024-11-08 19:13:01,147 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) [2024-11-08 19:13:01,147 INFO L276 IsEmpty]: Start isEmpty. Operand 642 states and 808 transitions. [2024-11-08 19:13:01,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2024-11-08 19:13:01,148 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 19:13:01,148 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] [2024-11-08 19:13:01,163 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-08 19:13:01,348 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 [2024-11-08 19:13:01,349 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 19:13:01,349 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:13:01,349 INFO L85 PathProgramCache]: Analyzing trace with hash -1878894513, now seen corresponding path program 3 times [2024-11-08 19:13:01,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 19:13:01,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631801537] [2024-11-08 19:13:01,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:13:01,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 19:13:01,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:13:01,837 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 83 proven. 4 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-08 19:13:01,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 19:13:01,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631801537] [2024-11-08 19:13:01,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1631801537] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 19:13:01,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2030304533] [2024-11-08 19:13:01,838 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-08 19:13:01,838 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 19:13:01,838 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 19:13:01,840 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) [2024-11-08 19:13:01,853 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-08 19:13:02,419 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-08 19:13:02,419 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 19:13:02,426 INFO L255 TraceCheckSpWp]: Trace formula consists of 366 conjuncts, 125 conjuncts are in the unsatisfiable core [2024-11-08 19:13:02,431 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 19:13:03,402 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 54 proven. 21 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-08 19:13:03,402 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 19:13:05,008 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 31 proven. 44 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-08 19:13:05,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2030304533] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 19:13:05,009 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 19:13:05,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 19, 21] total 44 [2024-11-08 19:13:05,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746176832] [2024-11-08 19:13:05,009 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 19:13:05,011 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2024-11-08 19:13:05,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 19:13:05,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2024-11-08 19:13:05,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=237, Invalid=1655, Unknown=0, NotChecked=0, Total=1892 [2024-11-08 19:13:05,013 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) [2024-11-08 19:13:10,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 19:13:10,163 INFO L93 Difference]: Finished difference Result 1917 states and 2411 transitions. [2024-11-08 19:13:10,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 118 states. [2024-11-08 19:13:10,163 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 [2024-11-08 19:13:10,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 19:13:10,166 INFO L225 Difference]: With dead ends: 1917 [2024-11-08 19:13:10,166 INFO L226 Difference]: Without dead ends: 1317 [2024-11-08 19:13:10,171 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 305 GetRequests, 156 SyntacticMatches, 1 SemanticMatches, 148 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6870 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=2755, Invalid=19595, Unknown=0, NotChecked=0, Total=22350 [2024-11-08 19:13:10,173 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 603 mSDsluCounter, 472 mSDsCounter, 0 mSdLazyCounter, 2631 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s 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, 1.4s IncrementalHoareTripleChecker+Time [2024-11-08 19:13:10,173 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [603 Valid, 496 Invalid, 2700 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 2631 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-08 19:13:10,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1317 states. [2024-11-08 19:13:10,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1317 to 913. [2024-11-08 19:13:10,196 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) [2024-11-08 19:13:10,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 913 states to 913 states and 1148 transitions. [2024-11-08 19:13:10,199 INFO L78 Accepts]: Start accepts. Automaton has 913 states and 1148 transitions. Word has length 95 [2024-11-08 19:13:10,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 19:13:10,199 INFO L471 AbstractCegarLoop]: Abstraction has 913 states and 1148 transitions. [2024-11-08 19:13:10,199 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) [2024-11-08 19:13:10,199 INFO L276 IsEmpty]: Start isEmpty. Operand 913 states and 1148 transitions. [2024-11-08 19:13:10,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2024-11-08 19:13:10,201 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 19:13:10,202 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] [2024-11-08 19:13:10,216 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-08 19:13:10,405 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 [2024-11-08 19:13:10,406 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 19:13:10,406 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:13:10,406 INFO L85 PathProgramCache]: Analyzing trace with hash -419935368, now seen corresponding path program 2 times [2024-11-08 19:13:10,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 19:13:10,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882006476] [2024-11-08 19:13:10,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:13:10,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 19:13:10,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:13:11,491 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 83 proven. 1 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-08 19:13:11,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 19:13:11,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882006476] [2024-11-08 19:13:11,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [882006476] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 19:13:11,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [600078583] [2024-11-08 19:13:11,492 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 19:13:11,492 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 19:13:11,493 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 19:13:11,495 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) [2024-11-08 19:13:11,500 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-08 19:13:12,101 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-08 19:13:12,102 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 19:13:12,111 INFO L255 TraceCheckSpWp]: Trace formula consists of 742 conjuncts, 71 conjuncts are in the unsatisfiable core [2024-11-08 19:13:12,118 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 19:13:12,732 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 46 proven. 37 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-08 19:13:12,732 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 19:13:13,538 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 27 proven. 59 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-08 19:13:13,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [600078583] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 19:13:13,539 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 19:13:13,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 15, 15] total 34 [2024-11-08 19:13:13,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279580854] [2024-11-08 19:13:13,539 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 19:13:13,539 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-08 19:13:13,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 19:13:13,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-08 19:13:13,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=187, Invalid=935, Unknown=0, NotChecked=0, Total=1122 [2024-11-08 19:13:13,544 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) [2024-11-08 19:13:15,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 19:13:15,020 INFO L93 Difference]: Finished difference Result 2677 states and 3305 transitions. [2024-11-08 19:13:15,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2024-11-08 19:13:15,021 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 [2024-11-08 19:13:15,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 19:13:15,026 INFO L225 Difference]: With dead ends: 2677 [2024-11-08 19:13:15,026 INFO L226 Difference]: Without dead ends: 1804 [2024-11-08 19:13:15,029 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 [2024-11-08 19:13:15,030 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 [2024-11-08 19:13:15,030 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] [2024-11-08 19:13:15,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1804 states. [2024-11-08 19:13:15,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1804 to 1034. [2024-11-08 19:13:15,051 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) [2024-11-08 19:13:15,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1034 states to 1034 states and 1278 transitions. [2024-11-08 19:13:15,052 INFO L78 Accepts]: Start accepts. Automaton has 1034 states and 1278 transitions. Word has length 95 [2024-11-08 19:13:15,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 19:13:15,052 INFO L471 AbstractCegarLoop]: Abstraction has 1034 states and 1278 transitions. [2024-11-08 19:13:15,053 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) [2024-11-08 19:13:15,053 INFO L276 IsEmpty]: Start isEmpty. Operand 1034 states and 1278 transitions. [2024-11-08 19:13:15,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2024-11-08 19:13:15,054 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 19:13:15,054 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] [2024-11-08 19:13:15,069 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-08 19:13:15,255 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 [2024-11-08 19:13:15,255 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 19:13:15,256 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:13:15,256 INFO L85 PathProgramCache]: Analyzing trace with hash -651407110, now seen corresponding path program 1 times [2024-11-08 19:13:15,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 19:13:15,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [107557139] [2024-11-08 19:13:15,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:13:15,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 19:13:15,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:13:15,840 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 140 proven. 4 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-11-08 19:13:15,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 19:13:15,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [107557139] [2024-11-08 19:13:15,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [107557139] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 19:13:15,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [861036833] [2024-11-08 19:13:15,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:13:15,841 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 19:13:15,841 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 19:13:15,843 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) [2024-11-08 19:13:15,844 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-08 19:13:16,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:13:16,296 INFO L255 TraceCheckSpWp]: Trace formula consists of 928 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-08 19:13:16,300 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 19:13:16,372 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 138 proven. 4 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-11-08 19:13:16,372 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 19:13:16,438 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 140 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2024-11-08 19:13:16,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [861036833] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-08 19:13:16,439 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-08 19:13:16,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7, 8] total 15 [2024-11-08 19:13:16,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127571775] [2024-11-08 19:13:16,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 19:13:16,439 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 19:13:16,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 19:13:16,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 19:13:16,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2024-11-08 19:13:16,440 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) [2024-11-08 19:13:16,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 19:13:16,462 INFO L93 Difference]: Finished difference Result 1085 states and 1331 transitions. [2024-11-08 19:13:16,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 19:13:16,462 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 [2024-11-08 19:13:16,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 19:13:16,463 INFO L225 Difference]: With dead ends: 1085 [2024-11-08 19:13:16,463 INFO L226 Difference]: Without dead ends: 0 [2024-11-08 19:13:16,463 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 [2024-11-08 19:13:16,464 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 [2024-11-08 19:13:16,464 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] [2024-11-08 19:13:16,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-08 19:13:16,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-08 19:13:16,464 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) [2024-11-08 19:13:16,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-08 19:13:16,465 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 115 [2024-11-08 19:13:16,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 19:13:16,465 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-08 19:13:16,465 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) [2024-11-08 19:13:16,465 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-08 19:13:16,465 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-08 19:13:16,467 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-08 19:13:16,483 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-08 19:13:16,671 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 [2024-11-08 19:13:16,675 INFO L407 BasicCegarLoop]: Path program histogram: [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 19:13:16,676 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-11-08 19:13:16,895 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-08 19:13:16,905 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.11 07:13:16 BoogieIcfgContainer [2024-11-08 19:13:16,906 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-08 19:13:16,906 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-08 19:13:16,906 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-08 19:13:16,906 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-08 19:13:16,907 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 07:12:35" (3/4) ... [2024-11-08 19:13:16,908 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-08 19:13:16,921 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2024-11-08 19:13:16,921 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2024-11-08 19:13:16,921 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-11-08 19:13:16,922 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-08 19:13:17,014 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-08 19:13:17,014 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-11-08 19:13:17,014 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-08 19:13:17,016 INFO L158 Benchmark]: Toolchain (without parser) took 42168.98ms. Allocated memory was 159.4MB in the beginning and 973.1MB in the end (delta: 813.7MB). Free memory was 91.4MB in the beginning and 630.9MB in the end (delta: -539.5MB). Peak memory consumption was 275.7MB. Max. memory is 16.1GB. [2024-11-08 19:13:17,016 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 102.8MB. Free memory is still 67.2MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-08 19:13:17,016 INFO L158 Benchmark]: CACSL2BoogieTranslator took 362.33ms. Allocated memory is still 159.4MB. Free memory was 91.2MB in the beginning and 120.4MB in the end (delta: -29.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-08 19:13:17,017 INFO L158 Benchmark]: Boogie Procedure Inliner took 93.03ms. Allocated memory is still 159.4MB. Free memory was 120.4MB in the beginning and 113.8MB in the end (delta: 6.6MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2024-11-08 19:13:17,017 INFO L158 Benchmark]: Boogie Preprocessor took 61.46ms. Allocated memory is still 159.4MB. Free memory was 113.8MB in the beginning and 109.6MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-08 19:13:17,017 INFO L158 Benchmark]: RCFGBuilder took 521.17ms. Allocated memory is still 159.4MB. Free memory was 109.6MB in the beginning and 74.4MB in the end (delta: 35.2MB). Peak memory consumption was 35.7MB. Max. memory is 16.1GB. [2024-11-08 19:13:17,017 INFO L158 Benchmark]: TraceAbstraction took 41009.90ms. Allocated memory was 159.4MB in the beginning and 973.1MB in the end (delta: 813.7MB). Free memory was 73.6MB in the beginning and 639.3MB in the end (delta: -565.7MB). Peak memory consumption was 250.3MB. Max. memory is 16.1GB. [2024-11-08 19:13:17,017 INFO L158 Benchmark]: Witness Printer took 109.41ms. Allocated memory is still 973.1MB. Free memory was 639.3MB in the beginning and 630.9MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-08 19:13:17,019 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 102.8MB. Free memory is still 67.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 362.33ms. Allocated memory is still 159.4MB. Free memory was 91.2MB in the beginning and 120.4MB in the end (delta: -29.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 93.03ms. Allocated memory is still 159.4MB. Free memory was 120.4MB in the beginning and 113.8MB in the end (delta: 6.6MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Preprocessor took 61.46ms. Allocated memory is still 159.4MB. Free memory was 113.8MB in the beginning and 109.6MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 521.17ms. Allocated memory is still 159.4MB. Free memory was 109.6MB in the beginning and 74.4MB in the end (delta: 35.2MB). Peak memory consumption was 35.7MB. Max. memory is 16.1GB. * TraceAbstraction took 41009.90ms. Allocated memory was 159.4MB in the beginning and 973.1MB in the end (delta: 813.7MB). Free memory was 73.6MB in the beginning and 639.3MB in the end (delta: -565.7MB). Peak memory consumption was 250.3MB. Max. memory is 16.1GB. * Witness Printer took 109.41ms. Allocated memory is still 973.1MB. Free memory was 639.3MB in the beginning and 630.9MB 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: 40.7s, OverallIterations: 20, TraceHistogramMax: 5, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 13.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 3387 SdHoareTripleChecker+Valid, 6.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3387 mSDsluCounter, 6250 SdHoareTripleChecker+Invalid, 5.5s 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, 10.5s 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: 0.2s AutomataMinimizationTime, 20 MinimizatonAttempts, 1914 StatesRemovedByMinimization, 13 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.5s SsaConstructionTime, 3.4s SatisfiabilityAnalysisTime, 18.9s 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! [2024-11-08 19:13:17,050 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE